Abstract: The invention relates to a vehicle seat having a lower part and an upper part displaceable in a height direction relative to the lower part, the lower part and the upper part being connected to one another in a manner displaceable relative to one another by means of a connecting unit, and a height adjustment unit being provided which is intended and designed to adjust a spacing of the lower part from the upper part, wherein the vehicle seat has a light display unit comprising a light source and a deflection unit for deflecting light of the light source, the light display unit being provided and adapted to output a first light indication when the spacing of the lower part to the upper part is outside a predetermined target area and to output a second light indication when the spacing is within the target area during a first operating state of the vehicle seat.

Abstract: Provided is a semi-active seat suspension system that minimizes vibration and energy transmission from a vibration/energy source, such as a motor vehicle, to a seated occupant by means of a spring and computer-controlled damper suspension system. Using a variety of sensors to determine an ideal damping rate at a given point in time, the system adjusts the damping rate in real time to provide the best possible ride to the occupant given the constraints of the system.

Abstract: A vehicle seat includes a lower member, a frame member, and a link member connected to the lower member and the frame member. The link member includes a first circular hole portion connected to the lower member so as to pivot about an axis in a width direction of a vehicle, a second circular hole portion connected to the frame member, a main body of plate shape in which the first circular hole portion and the second circular hole portion are formed, a flange projecting from the main body in a direction crossing the main body, a recess formed to bring the flange closer to an imaginary straight line connecting a center of the first circular hole portion with a center of the second circular hole portion, and an offset portion formed to shift the main body in a thickness direction of the main body.

Abstract: A control device controls a vehicle including a seat suspension which is provided between a chassis and a seat of the vehicle and restricts vibration and of which each of a spring constant and a damping coefficient is changeable and controllable. The control device detects, as vehicle information, a vehicle speed, an acceleration, a state of acceleration operation by a driver, a state of deceleration operation by the driver, and a state of steering by the driver. The control device determines, based on the vehicle information, whether the driver has driving preference of emphasizing the steering stability performance of the vehicle or driving preference of emphasizing the ride comfort performance of the vehicle, and, according to the determined driving preference, changes an acceleration of the seat by controlling the seat suspension.

Abstract: A body weight adjustment mechanism for automatic adjustment to a balanced point is provided to improve vibration absorption characteristics and impact absorption characteristics. A torsion angle of a lower frame-side torsion bar when an upper frame is at a balanced point is found in advance, a torsion angle of the lower frame-side torsion bar in a state in which a person is seated is detected, the detected torsion angle is compared with the aforesaid balanced point torsion angle, a control signal is sent to an elastic force adjusting unit, and torsion angles of upper frame-side torsion bars are adjusted so that the torsion angle of the lower frame-side torsion bar becomes equal to the balanced point torsion angle. The upper frame can be set to an appropriate position in an initial state and a static state in which a person is seated and vibration and impact absorption characteristics are improved.

Abstract: Vehicle seat having a suspension unit or cushioning the rolling and vertical suspension movements of the vehicle seat, wherein the vehicle seat has a vehicle seat upper part and a vehicle seat lower part, wherein the vehicle seat upper part and the vehicle seat lower part are connected by means of the suspension unit so that the vehicle seat upper part and the vehicle seat lower part are movable relative to one another, wherein the suspension unit has a scissor arrangement having a first scissor arm and a second scissor arm, wherein the suspension unit is connected rotatably about a first axis of rotation to the vehicle seat lower part and comprises a spring element support and a first fluid spring element and a second fluid spring element, wherein the first fluid spring element and the second fluid spring element are each connected to the vehicle seat lower part and to the spring element support which is rotatably connected about a second axis of rotation to the first scissor arm and rotatably connected abou

Abstract: The present invention relates to a device (1, 100) for supporting a monitor (4), preferably a pivotable monitor carrier, comprising a connection element (21) for connecting to a monitor (4) and a support frame (20) for supporting the device (1) against the environment, wherein the connection element (21) and the support frame (20) are arranged pivotably relative to each other, wherein the support frame (20) and the connection element (21) are pivotably connected to each other by means of a non-uniformly translating transmission for providing the pivotability of the connection element (21) relative to the support frame (20), or the support frame (20) and the connection element (21) are pivotably connected to each other by means of at least one rotary joint (110) for providing the pivotability of the connection element (21) relative to the support frame (20), wherein a motor (120), preferably an electric motor, for supporting the pivot movement of the connection element (21) relative to the support frame (20) i

Abstract: A suspension seat, including: a lower side member that forms a vehicle lower side of a suspension; an upper side member that forms a vehicle upper side of the suspension, and that is configured to support a vehicle seat body from the vehicle lower side; a suspension link mechanism that includes a vehicle lower side portion coupled to the lower side member and a vehicle upper side portion coupled to the upper side member, and that undergoes displacement so as to displace the upper side member along a vehicle vertical direction; a linear displacement section that is provided at the suspension link mechanism and is configured to undergo linear displacement in conjunction with displacement of the suspension link mechanism; and a locking mechanism that immobilizes the linear displacement section so as to immobilize displacement of the suspension link mechanism.

Abstract: A vehicle seat includes a seat cushion provided with a seat cushion frame, a front link configured to adjust a height of the seat cushion with respect to a base that is a slide rail or a vehicle body floor, and a front load detection sensor attached to an upper rail and configured to detect a load applied to the vehicle seat. The seat cushion frame includes a pair of side frames separated from each other in a seat width direction, the front link includes a first rotation shaft configured to be rotatable with respect to the seat cushion frame and a second rotation shaft configured to be rotatable with respect to the base, and the front load detection sensor is arranged at a position different from the second rotation shaft in a front to back direction of the seat.

Abstract: The present disclosure relates to an adjustment device for a vehicle seat comprising adjusters adjustable in relation to one another, where on the first adjuster a toothed rack with an interlocking is hinged, and on the second adjuster a pinion is pivoted, the interlocking engaging with the pinion for adjusting the toothed rack and for moving the two adjusters in relation to one another, where, further, a toothed rack blocking element is affixed to the second adjuster, and the toothed rack, when adjusted, runs between the toothed rack blocking element and the pinion.

Abstract: The invention relates to a device for adjusting a seat position for a vehicle seat, which comprises at least one support element for a seat part and can be connected to a seat substructure, the device comprising at least one first leg and at least one second leg, the legs being rotatably arrangeable on the seat substructure and the at least one support element, the at least one first leg and the at least one second leg being mechanically coupled by a connecting element, the length of which can be modified, wherein a modification of the length of the connecting element causes a change in an angle of inclination ? of the support element.

Abstract: The invention relates to an apparatus for adjusting a seat position for a vehicle seat, which comprises at least one support element for a seat part and can be connected to a seat substructure, wherein the apparatus comprises at least one first limb and at least one second limb, wherein the limbs can be rotatably arranged on the seat substructure and the at least one support element, wherein a first angle ? between the first limb and the support element can be adjusted by an angle adjustment device, wherein the at least one first limb and the at least one second limb each have a lever portion, and these are mechanically coupled, and wherein a change in the angle ? causes a displacement of the at least one support element along a height axis Z, and a change in an angle of inclination ? of the support element.

Abstract: The present disclosure provides a mounting device for a speaker and a speaker. The mounting device includes a central shaft, an abutting piece, an elastic piece and a fixing piece. The abutting piece includes a body part and an abutting part, the body part is nested with and to the central shaft. The elastic piece is provided between the central shaft and the body part. The fixing piece penetrates through the speaker so as to be connected with the central shaft. The fixing piece is configured for driving the abutting piece to rotate, such that the abutting part is capable to be rotated to a chute of the boss so as to be abutted with the top wall, such that the mounting steps of the speaker body can be simpler, the mounting is more convenient, with a higher safety and a lower labor intensity.

Abstract: A projection display device includes a display device, an optical system, and a shielding plate. The optical system includes a first mirror and a second mirror provided on the regular optical path, the second mirrors being to provide an optical path convergence point on the regular optical path, and the first mirrors being provided at a position corresponding to the optical path convergence point. The projection display device is configured such that a position of a mirror surface of the first mirror and the second mirror is adjustable in accordance with a position of an eye point of a user so as to project the light toward the projection position that corresponds to the position of the eye point. The shielding plate is provided such that the shieling plate does not interfere with the regular optical path and such that the shielding plate interferes with the different optical path.

Abstract: A vehicle seat in the present disclosure includes a seat cushion; a seatback; a sliding device configured to slidably support a seat main body that includes the seat cushion and the seatback; a first locking mechanism configured to restrict a sliding movement of the seat main body when the seat cushion and the seatback are placed in an occupiable state; a tip-up mechanism configured to rotationally displace the seat cushion in conjunction with a frontward tilting movement of the seatback; and a second locking mechanism configured to restrict a sliding movement of the seat main body when an elevation angle of the seat cushion exceeds a preset angle by an operation of the tip-up mechanism.

Abstract: A foldable stand assembly is provided. The assembly includes a base adapted to rest on a ground surface, a platform positionable above the base adapted to hold a separate apparatus (e.g., a vehicle jack), and a set of support arms extending between the base and the platform to support the overall assembly. The base includes a U-shaped channel into which the support arms and at least a portion of the platform may be received when the stand is folded for stowage. Accordingly, the stand assembly may be folded into a compact configuration for stowage and unfolded into an upright configuration for use.

Abstract: A lifting and support apparatus having a fully lowered position, a fully extended position and many transitional positions. The lifting and support apparatus includes a base portion with a first leg, a second leg, a third leg and a fourth leg hingedly attached thereto and extending therefrom. The apparatus can also include a first lateral support element that the first and second legs are extending toward and hingedly connected to and a second lateral support element that the third and fourth legs are extending toward and hingedly connected to. The apparatus further includes a lift support portion that has a fifth leg, a sixth leg, a seventh leg and an eighth leg hingedly connected thereto and extending therefrom, the fifth and sixth legs extending to and hingedly connected to the first lateral support element and the seventh and eighth legs extending to and hingedly connected to the second lateral support element.

Abstract: A method for cancelling seat vibration includes receiving, from an accelerometer, a plurality of accelerometer measurements and applying a first filter to the plurality of accelerometer measurements to remove accelerometer measurements of the plurality of accelerometer measurements having a frequency above a first threshold frequency. The method also includes applying a second filter to an output of the first filter to remove accelerometer measurements of the output of the first filter having a frequency above a second threshold frequency and applying a third filter to an output of the second filter to generate an accelerometer measurement output having a center frequency corresponding to a resonant frequency of the vibration of the at least one component of the seat. The method also includes determining an absolute magnitude value of the accelerometer measurement output and selectively controlling a motor based on the absolute magnitude value of the accelerometer measurement output.

Abstract: A mobile frame for at least one seat of a means of transportation is disclosed. The mobile frame includes: a load-bearing structure suitable for supporting the seat, and an anchoring element coupled with the load-bearing structure to selectively constrain the mobile frame to the support surface of the transportation means. The anchoring element has a fixing mechanism that can be moved from a non-anchored configuration, wherein at least one fixing element is retracted inside the load-bearing structure to an anchored configuration, wherein the fixing element protrudes beyond the load-bearing structure in order to constrain the mobile frame to the support surface.

Abstract: A frame for a vehicle seat comprises two side parts and swing arms pivotable in relation thereto for height adjustment of the frame. The swiveling of the swing arms can be caused by operating two actuator arms. Each actuator arm is associated with another swing arm so that the associated swing arm can be swiveled by actuating the respective actuator arm.

Abstract: A vehicle seat is provided with an upper part which is height-adjustably mounted with respect to a lower part by at least one scissor frame, where the scissor frame has a first scissor arm member and a second scissor arm member which are pivotally mounted about a common axis, where the first scissor arm member has a first, a second and a third lever member which are series-connected, where the first lever member is pivotally mounted with respect to the upper part about a third axis, where the third lever member is pivotally mounted with respect to the lower part about a fourth axis, and where the second lever member is pivotally mounted about the common axis and is rotationally connected to the first lever member by a fifth axis and rotationally connected to the third lever member by a sixth axis.

Abstract: A lift mechanism for a vehicle seating assembly comprises a gear assembly that includes a first gear and a second gear. A mounting bracket is fixedly coupled to a vehicle and shares a common axis with the first gear, wherein the first and second gears are positionable in a fixedly coupled arrangement at an initial location relative to the mounting bracket or at a final location relative to the mounting bracket, such that, when the first and second gears are in the fixedly coupled arrangement at the initial location relative to the mounting bracket, the seating assembly is in a sitting position, and when the first and second gears are in the fixedly coupled arrangement at the final location relative to the mounting bracket, the seating assembly is in a standing position.

Abstract: A desktop workspace that adjusts vertically includes a work surface platform, a base configured to sit on an existing platform, such as a desk, a height adjustable mechanism including at least one set of arms that connect at a pivot point(s) creating a scissoring motion to raise and lower the said work surface platform to various heights. A locking and unlocking mechanism may connect to the height adjustable mechanism. In some cases, the apparatus includes an adjustable mechanism to support items such as a keyboard. In some cases, the apparatus includes elements to raise items such as a monitor to an additional height.

Abstract: A desktop workspace that adjusts vertically includes a work surface platform, a base configured to sit on an existing platform, such as a desk, a height adjustable mechanism including at least one set of arms that connect at a pivot point(s) creating a scissoring motion to raise and lower the said work surface platform to various heights. A locking and unlocking mechanism may connect to the height adjustable mechanism. In some cases, the apparatus includes an adjustable mechanism to support items such as a keyboard. In some cases, the apparatus includes elements to raise items such as a monitor to an additional height.

Abstract: A vehicle seat having a base (10) and a squab (11) and an adjustment mechanism (20) whereby the position of an occupant sitting in the seat can be adjusted, the mechanism being configured so as to permit the seat to follow a motion path that provides coordinated adjustment of both height and back inclination of the occupant, the motion path being such that as the height of the occupant is raised the back inclination of the occupant becomes less supine.

Abstract: A lifting device for raising and lowering a cushion frame of a vehicle seat includes: a lifter link configured to be rotationally displaced to thereby raise or lower the cushion frame; a swing link configured to transmit a force for rotating the lifter link to the lifter link; a screw rod rotatably coupled to the swing link; a driving device configured to displace the screw rod along a first axis; and a first restricting portion configured to restrict displacement of a coupling portion between the swing link and the screw rod beyond a predetermined dimension in a second axis.

Abstract: A vehicle seat lifting apparatus includes: a cushion base of a vehicle seat; a link member rotatably provided on the cushion base and raising and lowering at least a part of the vehicle seat; a front limiter provided on a front portion in front of a rotation center of the link member and limiting rotation of the link member; and a rear limiter provided on a rear portion behind the rotation center of the link member and limiting the rotation of the link member.

Abstract: Provided is an inertial platform including an upper support that can be integrally attached to a mobile element and defines an upper plane, a base support that can be fixed to the ground and defines a base plane, at least one intermediate support arranged between the base and upper supports, articulated quadrilaterals each including two lower hinges, connected to one of the base or intermediate supports, two upper hinges, connected to one of the intermediate or upper supports, two rods which connect the lower hinges to the upper hinges in a crossed manner, and motor means configured to move the articulated quadrilateral internally according to its single degree of freedom defining an axis of rotation, and each including sensing means to detect the position of the upper plane with respect to the gravitational gradient functionally connected to means of control of the platform and at least to the motor means.

Abstract: This application describes surgical instruments and implants for building a posterior fixation construct across one or more segments of the spinal column. More specifically, the application describes instruments and methods for building a posterior fixation construct across one or more segments of the spinal column in a minimally invasive fashion.

Abstract: An earthquake protective server rack is provided including an upper server rack frame to house a server and a lower server rack frame. The lower server rack frame combines linear modules that dissipate earthquake energy along the X- and Y-axes and a dampening module that dissipates earthquake energy along a Z-axis. Mechanical movement of the feet on the lower server rack frame permits movement of the protective sever rack on rollers or alternatively to permit full function of the earthquake energy absorbing function while supported by the feet.

Abstract: A hinge includes a frame, an arm, a torque element, and a link. The frame and arm are rotatably connected about a first lateral axis. The torque element is displaced from the first lateral axis in a longitudinal direction perpendicular to the first lateral axis, and the torque element being rotatable about a second lateral axis. The link is connected to the arm and the torque element such that rotation of the arm about the first lateral axis translates the torque element in the longitudinal direction.

Abstract: There is described a vehicle seat suspension mechanism, comprising a vehicle mount, a seat support linked to the vehicle mount by a suspension arrangement which allows the seat support to fall with respect to the vehicle mount under load and a shock strut arranged to resist the seat support falling with respect to the vehicle mount during a compression stroke. A control link is arranged to be driven about a control link pivot by the fall of the seat support. The control link is pivotally coupled to a first end of the shock strut to guide the first end with respect to a second end of the shock strut in a manner which causes a motion ratio of the suspension mechanism to increase during progression of the compression stroke. The ride will feel softer for smaller impacts and better damped later for larger impacts. The mechanism is arranged underneath a seat of a vehicle to provide additional comfort for the rider.

Abstract: An adjustable damper includes a base, a first and second slidable members, a movable seat, a mass unit, and a first and second cantilevers. The first slidable member is slidably disposed on the base in a first direction. The movable seat is slidably disposed on the base in a second direction orthogonal to the first direction. The second slidable member is slidably disposed on the movable seat in the second direction. The mass unit is slidably disposed on the movable seat in the first direction. The first cantilever is fixed to a first connecting member. The first connecting member is connected to the movable seat. The first slidable member movably is disposed on the first cantilever. The second cantilever is fixed to a second connecting member. The second connecting member is connected to the mass unit. The second slidable member is movably disposed on the second cantilever.

Abstract: An electric drive system including: a rotary motor system including a hub assembly, a first rotating assembly, a second rotating assembly, and a third rotating assembly, wherein the hub assembly defines a rotational axis about which the first rotating assembly, the second rotating assembly, and the third rotating assembly are coaxially aligned and are capable of independent rotational movement independent of each other; a multi-bar linkage mechanism connected to each of the first and third rotating assemblies and connected to the hub assembly and constraining movement of the hub assembly so that the rotational axis of the hub assembly moves along a defined path that is in a transverse direction relative to the rotational axis and wherein the multi-bar linkage mechanism causes the rotational axis of the hub assembly to translate along the defined path in response to relative rotation of the first rotating assembly and the third rotating assembly with respect to each other.

Abstract: A lifter mechanism for an edge of a seat cushion includes a bracket pivotable about a transverse bar. The bracket includes a forward lever and a rearward portion. The forward lever is coupled to a channel within a flange of a seat suspension. The rearward portion is coupled to a linkage. The linkage is coupled to a seatback. The forward lever raises an edge of the seat suspension upon the seatback pivoting to a predetermined reclined position.

Abstract: A torsion bar configured to assist height adjustment of a seat cushion frame is housed in a hollow coupling pipe positioned between side frames. The inside of the coupling pipe has first and second engagement portions configured to engage and hold one end portion of the torsion bar in an extension direction thereof. The first engagement portion is engaged with a first engaged portion of the one end portion. The second engagement portion is engaged with a second engaged portion of the one end portion in the same position as a position of engagement between the first engagement portion and the first engaged portion in the seat width direction or in a position on the inner side from the position of engagement in the seat width direction, the second engaged portion being positioned closer to one end of a biasing member in the extension direction than the first engaged portion.

Abstract: A seat assembly for a motor vehicle includes a side member, a front link, a rear link and a rail. The side member, the front link, the rear link and the rail form a four-bar linkage with four way movement. The seat assembly further includes a transformation bracket that is attached to the first side member and connected to the rear link to convert the seat assembly with four way movement to two way movement.

Abstract: Provided is a work vehicle having a rollover protection structure (ROPS) around a driver's seat which is switchable between a front seating posture and a rear seating posture. A locking mechanism locks the driver's seat to the rear seating posture. The locking mechanism includes a hook provided on the driver's seat side, a hook rod disposed between a left strut and a right strut and engageable with the hook when the driver's seat is switched to the rear seating posture, and a rod bracket for supporting the hook rod. The rod bracket is provided separately from the left strut and the right strut.

Abstract: An adjustable height platform is disclosed. The example adjustable height platform provides a first stage of uprights coupled to a lower platform and a second stage of uprights coupled to a lower platform. The first and second stage are coupled by a bracket with three pivot points. A first lower upright and a first upper upright couple to distinct pivot points on the bracket and a second lower upright and second upper upright couple to a common pivot point on the bracket. A first-to-second stage transfer mechanism transfer rotation force from the first stage of uprights to the second stage of uprights. The upper platform includes a height fixing mechanism release to interface with a height fixing mechanism coupled to the first upper upright to fix the height of the adjustable height platform.

Abstract: An adjustable seat has a seat base having a front end and a rear end, a front leg assembly having a top end engaged with the rear end of the seat base and a bottom end opposite the top end for engaging a supporting surface, and a back leg assembly having a top end engaged with the front end of the seat base and a bottom end opposite the top end for engaging the supporting surface. The back leg assembly is pivotally connected to the front leg assembly between the top end and the bottom end of the front leg assembly and the back leg assembly. The adjustable seat has an adjustment assembly for selectively locking the front leg assembly relative to the back leg assembly at one of a plurality of lockable positions between a first position and a second position.

Abstract: Suspension device for a vehicle seat, comprising an upper suspension portion and a lower suspension portion, which are interconnected by a first swivel connector and a second swivel connector, wherein the suspension device comprises a first adjustable toothed wheel element arranged on the upper suspension portion, a second toothed wheel element connected to the first swivel connector for adjusting a position of a first spring unit, by means of which a spring force and a spring rate of the suspension device can be changed, and a third toothed wheel element which is at least operatively connected to the first and the second toothed wheel element and is connected to the first swivel connector.

Abstract: A seat support suspension improving an absorption characteristic of low-cycle vibrations resulting from rolling. A seat support member supporting a seat is provided via a rolling absorption mechanism for absorbing rolling on brackets as a vehicle body side attachment member attached to the vehicle body side. Thus, rolling, low-cycle vibrations, generated by a phase shift or the like of a hydraulic suspension of the vehicle can be absorbed by the rolling absorption mechanism, a lateral displacement of the body of the seated person can be prevented, stability of a seated posture can be increased, and moreover occurrence of motion sickness can be suppressed.

Abstract: In various embodiments, a television wall mount is provided that may be installed at a position in a television wall nook such that when the television monitor is bolted, screwed or hung on the television monitor mounting bracket, the television is located in front of and outside the television wall nook. In this manner, a television monitor that is too wide to fit in the television wall nook may be installed over the television wall nook by mounting the television on the television wall mount installed in the television wall nook.

Abstract: An adjustable seat has a seat base having a front end and a rear end, a front leg assembly having a top end engaged with the rear end of the seat base and a bottom end opposite the top end for engaging a supporting surface, and a back leg assembly having a top end engaged with the front end of the seat base and a bottom end opposite the top end for engaging the supporting surface. The back leg assembly is pivotally connected to the front leg assembly between the top end and the bottom end of the front leg assembly and the back leg assembly. The adjustable seat has an adjustment assembly for selectively locking the front leg assembly relative to the back leg assembly at one of a plurality of lockable positions between a first position and a second position.

Abstract: The present disclosure relates to a lumbar support assembly. The present disclosure provides a lumbar support assembly installed at a seat back frame at the inside of a vehicle seat and configured to support the back region of an occupant, comprising: a suspension mat coupled to the seat back frame; a guide box coupled to the suspension mat; an actuator coupled to the guide box and including a spindle shaft disposed at one side thereof so as to be positioned within the guide box; a pair of spindle nuts screw-coupled to the spindle shaft and slidably moved in opposite directions to each other along with the rotation of the spindle shaft; and a pair of cables coupled at one ends thereof to the seat back frame and coupled at the other ends thereof to the pair of spindle nuts.

Abstract: A seat height adjustment module for a seat, in particular for a vehicle seat, having a manually operable control element which, to provide an adjusting movement for the seat, can be moved out of an initial position into a first actuating position and into a second actuating position and back. A primary spring is provided, which cooperates with a transmission member such that the primary spring is relaxed with movement of the control element into a first actuating position and such that the primary spring is tensioned with movement of a control element into the second actuating position.

Abstract: A seat suspension with a compact structure while being capable of coping with input vibrations not only in a vertical direction but in six-axis directions. Three pantograph links between a vehicle body floor side and a seat side are employed. Thus, control in six-axis directions is possible, allowing simplification compared to conventional structures. In addition to an active control mechanism using the pantograph links, the seat suspension has a compressed coil spring and the magnetic spring as a first elastic member and a second elastic member. Specifically, damping is performed with high efficiency by controlling the seat side in a reverse phase to the vehicle body floor side with respect to the input direction of vibrations by the active control mechanism and meanwhile performing damping passively by these elastic members.

Abstract: Disclosed is a platform on desktop with elevation function, including a primary desktop, a primary desktop, an elevation assembly securely mounted to the primary desktop, and a secondary desktop securely mounted to the elevation assembly. The elevation assembly includes opposite arranged first and elevation frames. A positioning assembly includes a positioning member having spaced positioning holes to selectively receive an end of an upper guide pin mounted to a bar of the elevation assembly. A pull handle assembly is rotatably coupled to the positioning member for selectively disengaging the upper guide pin from the positioning member so as to allow the elevation frame to raise or lower down.

Abstract: A neck injury is improved with a structure having a lifting mechanism part only on one side. While a lifting driving part is provided on a side of one side frame, a coupling driving rod is coupled to a rotation center of a drive gear a driving link is disposed on a side of the other side frame, and the driving link is coupled to the coupling driving rod. A driving force in the lifting driving part operates on the side of one side frame having the drive gear, but on the side of the other side frame, the driving link rotates together with the drive gear via the coupling driving rod, so as to perform a lifting or lowering operation. The shape of a virtual square coupling contact points of the driving link, the side connectors, the coupling driving rod, and the drive gear does not collapse, and thus an external input is dispersed.

Abstract: A vehicle seat includes a seat frame, a bushing having a shape of a hollow cylinder and a pipe. The pipe is fitted to the bushing and attached to the seat frame. The pipe includes a body portion having a fitting diameter different from a fitting diameter of the bushing and a fitting portion formed at an end in an axial direction of the body portion and fitted to an inner periphery or an outer periphery of the bushing. The fitting portion is formed in a diameter-reduced or diameter-increased hollow cylindrical shape that is fitted to the inner periphery or the outer periphery of the bushing.