Abstract: To enable correction or adjustment of a curtain travel curve in a case of driving an opening and closing blade by a power source in which a motor mechanism and a spring mechanism are combined. Provided are the motor mechanism that generates a traveling torque of the opening and closing blade of a mechanical shutter provided in an incident light path to an imaging element by electric conduction to a coil, and the spring mechanism that generates the traveling torque of the opening and closing blade together with the motor mechanism. In this case, a control unit capable of individually controlling a time length from the start of the electric conduction to the coil to the start of traveling of the opening and closing blade, and a value of a current to be supplied to the coil is provided.

Abstract: Provided are a first magnetic drive unit including a first coil and a first magnet, and a second magnetic drive unit including a second coil and a second magnet. Also provided are a first drive lever and a second drive lever operated by the first magnetic drive unit and the second magnetic drive unit, respectively, a first opening and closing blade and a second opening and closing blade that open and close an opening by an operation of the first drive lever and the second drive lever, respectively. A first lock mechanism locks the first drive lever at a predetermined position, and a second lock mechanism that locks the second drive lever at a predetermined position, and a part of the first lock mechanism and a part of the second lock mechanism are located between the first magnetic drive unit and the second magnetic drive unit.

Abstract: To secure a favorable photographing state without causing an increase of power consumption. A blade opening/closing apparatus includes a magnetic driving portion including a coil to which a driving current is supplied and a magnet that is rotated along with energization to the coil; a driving body that includes a to-be-locked portion and is operated by the magnetic driving portion; an opening/closing blade that opens/closes an aperture by an operation of the driving body; and a lock portion that sets a locked state of the opening/closing blade by engaging with the to-be-locked portion, the setting of the locked state and a release of the locked state being carried out in accordance with a rotation position of the magnet.

Abstract: To decrease the influence of a magnetic flux generated in one magnetic drive unit on the other magnetic drive unit while securing downsizing.

Abstract: To achieve downsizing while securing favorable functionality by a power assist spring. Provided are a blade opening and closing device including a magnetic drive unit including a coil to which a drive current is supplied and a magnet rotated with electric conduction to the coil, a drive lever configured to be operated by the magnetic drive unit, an opening and closing blade configured to open and close an opening by an operation of the drive lever, and a power assist spring configured to provide at least the drive lever with an energizing force in an operation direction of the drive lever, in which the power assist spring is located at an opposite side of the drive lever across the magnet.

Abstract: To enable correction or adjustment of a curtain travel curve in a case of driving an opening and closing blade by a power source in which a motor mechanism and a spring mechanism are combined. Provided are the motor mechanism that generates a traveling torque of the opening and closing blade of a mechanical shutter provided in an incident light path to an imaging element by electric conduction to a coil, and the spring mechanism that generates the traveling torque of the opening and closing blade together with the motor mechanism. In this case, a control unit capable of individually controlling a time length from the start of the electric conduction to the coil to the start of traveling of the opening and closing blade, and a value of a current to be supplied to the coil is provided.

Abstract: To secure a favorable photographing state without causing an increase of power consumption. A blade opening/closing apparatus includes a magnetic driving portion including a coil to which a driving current is supplied and a magnet that is rotated along with energization to the coil; a driving body that includes a to-be-locked portion and is operated by the magnetic driving portion; an opening/closing blade that opens/closes an aperture by an operation of the driving body; and a lock portion that sets a locked state of the opening/closing blade by engaging with the to-be-locked portion, the setting of the locked state and a release of the locked state being carried out in accordance with a rotation position of the magnet.

Abstract: A solenoid valve is supported by a supporting bracket at a position above a control valve. An erected section of the supporting bracket is arranged at a position separated from the control valve in a horizontal direction so as not to overlap with a hydraulic port in the control valve in a side view. A plurality of pilot pipes connected to the solenoid valve are held by a guide section in a bundled state so that the pilot pipes are routed in a vertical direction along the erected section.

Abstract: Provided is a construction machine in which the weight of a top plate of an aftertreatment device mount is reduced without reducing the rigidity of the top plate. In a construction machine where a vehicle body frame for mounting an engine is equipped with an aftertreatment device mount for supporting an exhaust gas aftertreatment device, a mount top plate of the aftertreatment device mount includes a support on which the exhaust gas aftertreatment device is placed, a pair of outer walls extending parallel, a groove portion parallel to the outer walls, a connecting portion provided on the support, and an upper reinforcing member orthogonal to the groove portion at a position of the connecting portion. The upper reinforcing member includes a first reinforcing portion for reinforcing the connecting portion and a second reinforcing portion to be fitted in the groove portion.

Abstract: Provided is a construction machine in which the weight of a top plate of an aftertreatment device mount is reduced without reducing the rigidity of the top plate. In a construction machine where a vehicle body frame for mounting an engine is equipped with an aftertreatment device mount for supporting an exhaust gas aftertreatment device, a mount top plate of the aftertreatment device mount includes a support on which the exhaust gas aftertreatment device is placed, a pair of outer walls extending parallel, a groove portion parallel to the outer walls, a connecting portion provided on the support, and an upper reinforcing member orthogonal to the groove portion at a position of the connecting portion. The upper reinforcing member includes a first reinforcing portion for reinforcing the connecting portion and a second reinforcing portion to be fitted in the groove portion.

Abstract: A solenoid valve is supported by a supporting bracket at a position above a control valve. An erected section of the supporting bracket is arranged at a position separated from the control valve in a horizontal direction so as not to overlap with a hydraulic port in the control valve in a side view. A plurality of pilot pipes connected to the solenoid valve are held by a guide section in a bundled state so that the pilot pipes are routed in a vertical direction along the erected section.

Abstract: A cabin in a construction machine has a door having a vertically extending door frame and a door glass attached to the door frame. The door frame has a pulling handle portion which is attached to the cabin frame pivotally around a vertical pivot axis and projects in a direction having a component extending away from the door glass. The pulling handle portion is aligned with the riding handle in front and rear directions outside the cabin when the door is fully opened. The pulling handle portion satisfies at least one of a first condition that the height position of the second gripped portion is offset upward from the height position of the riding handle, and a second condition that the second gripped portion of the pulling handle portion extends in a second extending direction different from the first extending direction.

Abstract: Provided is a front window formed in a cabin including an upper window formed in a front face of the cabin and having a window frame with an underside portion, and a lower window disposed below the upper window so as to contact the upper window, while being capable of inhibiting condensed water from building up on the underside portion and rusting the underside portion. The upper window is provided with a glass plate having a periphery to be attached to an outer face of the window frame, defining a clearance between the underside portion and the glass plate to let out the condensed water generated on an inner face of the glass plate downwardly from the underside portion.

Abstract: The invention provides a door for a cabin in a construction machine, the door including a pulling handle portion to be pulled in a closing direction of the door from the inside of the cabin and preventing the pulling handle portion from misuse as a riding handle, the riding handle including a first gripped portion extending in a first extending direction to be gripped by an operator when the operator rides in the cabin. The door includes a cabin frame having an entrance and a riding handle projecting from an fringe portion fringing the entrance of the cabin frame in a specific direction. The door has a door frame vertically extending and a door glass to be attached to the door frame.

Abstract: Provided is a front window formed in a cabin including an upper window formed in a front face of the cabin and having a window frame with an underside portion, and a lower window disposed below the upper window so as to contact the upper window, while being capable of inhibiting condensed water from building up on the underside portion and rusting the underside portion. The upper window is provided with a glass plate having a periphery to be attached to an outer face of the window frame, defining a clearance between the underside portion and the glass plate to let out the condensed water generated on an inner face of the glass plate downwardly from the underside portion.

Abstract: Proposed is a method for bonding of a ceramic body and a metallic body at a relatively low temperature not to cause substantial deformation or material degradation of the ceramic and metallic materials. The surface of the ceramic body is first irradiated with laser beams in vacuum so that the inorganic non-volatile constituent of the ceramic material, e.g. silicon when the ceramic is silicon nitride, is isolated on the surface of the ceramic body forming a layer. Thereafter, the metallic body is brought into contact with and pressed in vacuum against the thus laser beam-irradiated area of the ceramic body under an adequate pressing force and at an elevated but relatively low temperature which is, for example, not higher than 0.5Tm .degree.C., Tm .degree.C. being the melting point of the metallic material, so that the ceramic and metallic bodies are firmly bonded together.

Abstract: A spraying material is fed to and melted in a high energy density zone formed by converging a laser beam therein with a converging lens or a mirror, and the molten spraying material is rendered into particles by jetting a carrier gas stream such that the axis thereof crosses the axis of the laser beam in the high energy density zone to blow the particles of the molten spraying material against a base surface disposed to be normal to the carrier gas stream axis beyond the high energy density zone so as to form a film of the spraying material on the surface.