Abstract: A trimming machine capable of suppressing damage to a gear when blades are locked, with a simple structure without increasing weight and cost. The trimming machine includes: an electric motor; a blade drive gear rotationally driven by the electric motor; an eccentric cam provided in the gear; and a pair of blades relatively slidably facing and contacting each other, in which the eccentric cam is adapted to reciprocate the pair of blades in relatively opposite directions along the longitudinal direction of the blades, thereby grinding cutting edges against each other, the cutting edges provided in a protruding manner with gaps therebetween in the pair of blades, and a shock absorbing portion is provided between a connecting portion connected to the eccentric cam and the cutting edges in each of the blades.

Abstract: A trimming machine capable of releasing cutting edges from branches or the like, by reversing motor rotation without requiring additional operation (with normal operation) by a user, such as operating a forward-reverse switching lever, when blades are locked. The trimming machine includes: an electric motor; a blade drive gear rotationally driven by the electric motor; an eccentric cam provided in the gear; a pair of blades relatively slidably facing and contacting each other, which are reciprocated, by the eccentric cam, in relatively opposite directions along a longitudinal direction of the blades, thereby grinding cutting edges provided in a protruding manner with gaps therebetween in the pair of blades against each other; a trigger lever for driving the blades; and a control circuit (controller) that controls a rotational driving of the electric motor based on input from the trigger lever and switches a rotational direction of the electric motor at each time of the input from the trigger lever.

Abstract: A reciprocating blade apparatus includes a pair of reciprocating blades stacked on one another in a thickness direction. Each of the blades includes a base as a flat plate extending in a longitudinal direction, and a plurality of teeth protruding in a direction intersecting the longitudinal direction. A transmission case of the reciprocating blade apparatus also includes a reciprocating member having a joint detachably coupled to the base, the reciprocating member being reciprocably supported in the longitudinal direction. A blade support member is attached to the transmission case and configured to sandwich bases of the pair of reciprocating blades therebetween to allow the pair of reciprocating blades to move in the longitudinal direction. The blade support member supporting the pair of reciprocating blades is detachably attached to the transmission case.

Abstract: A reciprocating blade apparatus includes a pair of reciprocating blades stacked on one another in a thickness direction. Each of the blades includes a base as a flat plate extending in a longitudinal direction, and a plurality of teeth protruding in a direction intersecting the longitudinal direction. A transmission case of the reciprocating blade apparatus also includes a reciprocating member having a joint detachably coupled to the base, the reciprocating member being reciprocably supported in the longitudinal direction. A blade support member is attached to the transmission case and configured to sandwich bases of the pair of reciprocating blades therebetween to allow the pair of reciprocating blades to move in the longitudinal direction. The blade support member holds a space to accommodate the pair of reciprocating blades and is independently attached to the transmission case. The pair of reciprocating blades is detachably attached to the blade support member.

Abstract: Provided is a hedge trimmer including an electric motor, a blade disposed ahead of the electric motor and a body case housing the electric motor. The electric motor includes a stator equipped with coils and an outer rotor which has a circumferential wall portion surrounding an outer circumference of the stator, the circumferential wall portion being equipped with magnets. The outer rotor is rotatably supported by the stator and connected to the blade via a driving transmission mechanism. The blade reciprocates according to the rotation of the outer rotor.

Abstract: A reciprocating blade apparatus includes a pair of reciprocating blades stacked on one another in a thickness direction, and a transmission case including a power train configured to reciprocate the pair of reciprocating blades. The power train includes a pair of eccentric cams, and a pair of reciprocating members including fitting holes in which the eccentric cams are fitted, respectively. The pair of reciprocating members is guided to be able to move along an axis line which is parallel to a moving direction of the pair of reciprocating blades and runs through a rotation axis of the eccentric cams.

Abstract: A reciprocating blade apparatus includes a pair of reciprocating blades stacked on one another in a thickness direction, and a transmission case including a power train configured to reciprocate the pair of reciprocating blades. The power train includes a pair of eccentric cams, and a pair of reciprocating members including fitting holes in which the eccentric cams are fitted, respectively. The pair of reciprocating members is guided to be able to move along an axis line which is parallel to a moving direction of the pair of reciprocating blades and runs through a rotation axis of the eccentric cams.

Abstract: A reciprocating blade apparatus includes: a pair of reciprocating blades stacked on one another in a thickness direction, each of which includes a base as a flat plate extending in a longitudinal direction, and a plurality of teeth protruding in a direction intersecting the longitudinal direction; a transmission case including a reciprocating member having a joint detachably coupled to the base, the reciprocating member being reciprocally supported in the longitudinal direction; and a blade support member attached to the transmission case and configured to sandwich bases of the pair of reciprocating blades therebetween to allow the pair of reciprocating blades to move in the longitudinal direction. The blade support member holds a space to accommodate the pair of reciprocating blades and is independently attached to the transmission case. The pair of reciprocating blades is detachably attached to the blade support member.

Abstract: A reciprocating blade apparatus includes: a pair of reciprocating blades stacked on one another in a thickness direction, each of which includes a base as a flat plate extending in a longitudinal direction, and a plurality of teeth protruding in a direction intersecting the longitudinal direction; a transmission case including a reciprocating member having a joint detachably coupled to the base, the reciprocating member being reciprocably supported in the longitudinal direction; and a blade support member attached to the transmission case and configured to sandwich bases of the pair of reciprocating blades therebetween to allow the pair of reciprocating blades to move in the longitudinal direction. wherein the blade support member supporting the pair of reciprocating blades is detachably attached to the transmission case.

Abstract: A hedge trimmer capable of effectively increasing the rigidity of a cutter assembly as well as reducing its weight, and easily adjusting the clearance for sliding of cutters, thereby improving the operability and addressing degradation of the cutting performance of the cutters is disclosed. In the cutter assembly, upper and lower cutter supports are provided with a plurality of clamping portions at predetermined intervals for increasing the rigidity, each clamping portion having a square tube-like spacer and a first bolt. In addition, at least one adjusting portion having a second bolt for adjusting the separation distance between the upper and lower cutter supports is provided between adjacent clamping portions.

Abstract: A rotatable rear hand grip (3) is releasably locked at a desired rotational position by operation of a control lever member (4). The power hand tool includes: a tool body (1) including an engine for generating driving power used for performing work; a front hand grip (2) fixed to the tool body; a rear hand grip including: a control lever member coupled to the engine for controlling an output of the engine; a supporting mechanism for supporting the rear hand grip rotationally about an axis (AX) between the tool body and the rear hand grip; a locking mechanism for locking the rear hand grip at one rotational position about the axis in response to the control lever member; and a controlling mechanism (4d) for allowing the control lever member to control the output of the engine after the locking mechanism locks the rear hand grip.

Abstract: A rotatable rear hand grip (3) is releasably locked at a desired rotational position by operation of a control lever member (4). The power hand tool includes: a tool body (1) including an engine for generating driving power used for performing work; a front hand grip (2) fixed to the tool body; a rear hand grip including: a control lever member coupled to the engine for controlling an output of the engine; a supporting mechanism for supporting the rear hand grip rotationally about an axis (AX) between the tool body and the rear hand grip; a locking mechanism for locking the rear hand grip at one rotational position about the axis in response to the control lever member; and a controlling mechanism (4d) for allowing the control lever member to control the output of the engine after the locking mechanism locks the rear hand grip.

Abstract: An objective lens for focusing a laser beam onto an optical information medium is disclosed. The objective lens comprises a lens body and a flange portion arranged on the periphery of the lens body. The surface of the lens body facing the optical information medium is formed with a convex shape having a radius of curvature R as follows: 0.05 m<R<0.5 m. In this way, a dynamic pressure is generated due to the convex-shaped surface and the rotation of the optical disk. This generates a buoyancy which overcomes the maximum acceleration of the objective lens. In this manner, it becomes possible to avoid collision of the objective lens with the optical information medium even in the presence of relative tilts, such as tangential tilts, radial tilts, and shift tilts, between the optical information medium and the objective lens.

Abstract: A tape recorder comprises a tape run stop detection lever and a spring. The lever is provided with a detection pin which is urged in one direction by a rotation of a right side reel rest to be engaged with a cam idler. When the detection pin is engaged with the cam idler at the stop of the right side reel rest, the lever is moved in one direction by the engagement between the cam idler and detection pin. The spring produces at the movement of the lever an urging force acting in the direction opposite to said one direction. The lever is moved in the direction by the engagement between the cam idler and detection pin to detect the stop of the tape run. The cam idler is temporarily prevented from being coupled to an idler section of a flywheel and is rotated by the spring in the direction opposite to said one direction to release the engagement.