JP2549395B2 - Electric razor trimmer device - Google Patents

Description

Detailed Description of the Invention

TECHNICAL FIELD The present invention relates to a trimmer device for an electric shaver, and more particularly to a support structure for a trimmer driver for driving a movable blade of the trimmer.

[Background Art]

There is a type in which the movable blade of the trimmer blade block is driven not through the driver for driving the inner blade of the main blade but through the trimmer driver. An example is shown in FIGS. 8 and 9. The trimmer blade block 3 is rotatably supported by a shaft 41 of a trimmer support plate 40 integrally formed on the upper part of the switch operation plate 4, and a push-up plate that moves upward as the trimmer operation plate 4 moves upward. 6 to the arm 60 protruding from the trimmer blade block 3
Are connected. In the trimmer driver 5 for driving the movable blade 32 of the trimmer blade block 3, a pair of hooks 43, 43 protruding from the trimmer support plate 40 are inserted and locked in the central axial hole 50. By trimmer support plate
It is attached to 40 and is rotatably supported by both hooks 43, 43. In this case, when the switch operation plate 4 is pushed up, the push-up plate 6 which moves in conjunction with this and moves further upward than the switch operation plate 4 rotates the trimmer blade block 3 to move its tip sideways. And guide plate 33 fixed to the movable blade 32
Is engaged with the upper end of the trimmer driver 5, and the lower end of the trimmer driver 5 is engaged with the arm 16 projecting from the driver 15 in the main body 1 for converting the rotation of the motor 14 into reciprocating motion. To meet. When the motor 14 is rotated in this state, the inner blade 21 of the main blade 2 composed of the outer blade 20 and the inner blade 21 arranged at the upper end of the main body 1 is reciprocally driven, and at the same time, the hooks 43, 43 are rotated. The movable blade 32 of the trimmer blade block 3 is also reciprocally driven through the trimmer driver 5 and the guide plate 33 which swing as described above. By the way, in this electric razor, as is clear from the above, the trimmer driver 5 is rotatably supported by the hooks 43, 43 for attaching the trimmer driver 5 to the trimmer support plate 40. Therefore, it had the following problems. That is, the hooks 43, 43 are inserted and locked in the shaft hole 50 of the trimmer driver 5 by utilizing the elasticity of the hooks 43, 43.
The clearance between the outer surface and the outer surface is difficult to control, and the external force when the trimmer is driven may be applied to the hooks 43, 43, which may cause deformation or damage to the hooks 43, 43. Inducing noise, increasing noise, decreasing sharpness due to smaller amplitude of trimmer, trimmer driver 5
It causes a situation such as the slipping off.

[Object of the invention]

The present invention has been made in view of the above circumstances, and an object thereof is to provide an electric shaver that can reliably support a trimmer driver and does not cause a problem due to the poor support. To do.

DISCLOSURE OF THE INVENTION

Therefore, the trimmer device for an electric shaver according to the present invention includes a trimmer blade block supported by a trimmer support plate, and a trimmer driver that is swingably supported and transmits a reciprocating motion to a movable blade of the trimmer blade block. In addition, the trimmer driver is provided with a shaft supporting portion that is pivotally supported by the trimmer supporting plate, and a hook engaging portion that is rotatable about the shaft supporting portion is coaxial with the trimmer supporting plate. The present invention is characterized in that the independent shaft supporting portion is provided coaxially with the hook engaging portion for attaching the trimmer driver to the trimmer supporting plate. BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in detail with reference to the illustrated embodiment. A main body 1 is provided with a main blade 2 on its upper portion and a switch operation plate 4 which is vertically movable on one side as shown in FIG. The trimmer blade block 2 is mounted on the trimmer support plate 40 which is integrally formed on the switch operation plate 4. As shown in FIG. 4, the main body 1 is provided with a charging circuit block 13 in its lower portion, a motor 14 and storage batteries 17, 17 above it, and an output shaft 19 of the motor 14 in its upper portion. A drive element 15 for converting the rotation of the eccentric shaft 18 into a reciprocating motion is disposed, and an outer blade 20 and an inner blade 21 that configure the main blade 2 are disposed at the upper end, and an inner blade is disposed at the upper end of the drive element 15. 21 are connected. The switch operation plate 4 disposed on one surface of the main body 1 is integrally provided with the trimmer support plate 40 on the upper portion as described above, and the trimmer blade block 3 is attached to the trimmer support plate 40.
It is rotatably supported by a pair of shafts 41 provided on the.
In addition, the trimmer support plate 40 of the switch operation plate 4
A push-up plate 6 for rotating the trimmer blade block 3 and a trimmer driver 5 are attached to the. The trimmer blade block 3 is composed of a substrate 30, a fixed blade 31 and a movable blade 32 attached to the substrate 30, a guide plate 33 attached to the movable blade 32, and the like.
The tip of the arm 60 protruding from the pushing-up frame 6 is connected in the vicinity of. The push-up plate 6 includes an engaging portion between the switch operation plate 4 and a cam (not shown) formed on the outer surface of the main body 1, and when the switch operation plate 4 is operated, the stroke of the switch operation plate 4 is Also moves up and down with a large stroke, and when the switch operating plate 4 is operated upward, the trimmer blade block 3 is pushed up and the tip of the trimmer blade block 3 is projected laterally as shown in FIG. The trimmer driver 5 is swingably supported by a trimmer support plate 40 at the center in the vertical direction.
When the switch operating plate 4 is operated upward to project the tip of the trimmer blade block 3 laterally, its upper end is connected to the movable blade 32 via the guide plate 33 and its lower end projects from the driver 15. The movement of the driver element 15 is transmitted to the movable blade 32 by engaging with the arm 16 which has been formed. The attachment of the trimmer driver element 5 to the trimmer support plate 40 and the pivotal support by the trimmer support plate 40 are It is done as follows. That is, as shown in FIGS. 5 to 7, a hook engaging hole 46 is formed in the trimmer supporting plate 40, and two annular ribs 47, 48 surrounding the hook engaging hole 46 are formed on one surface.
Are formed coaxially, and an annular groove 49 is provided between both annular ribs 47 and 48. A pair of hooks 51, 51 are provided on one surface of the trimmer driver 5, and a cylindrical shaft 5 surrounding the hooks 51.
When the hooks 51, 51 are inserted and locked in the hook engaging holes 46, the cylinder shaft 52 enters the groove 59 and the outer peripheral surface of the cylinder shaft 52 is formed by the protrusion. One of the two annular ribs 47, 48 is supported by the inner surface of the annular rib 48 located on the outer peripheral side. It is said that. A shaft supporting portion for swinging the trimmer driver 5 is independent of a hook engaging portion for attaching the trimmer driver 5 to the trimmer support plate 40, and is arranged coaxially with the hook engaging portion. That is why. The hook engaging hole 46 is provided on the trimmer driver 5 and the hook 5
Of course, 1, 51 may be provided on the trimmer support plate 40, the cylinder shaft 52 may be provided on the trimmer support plate 40, and the annular rib 48 may be provided on the trimmer driver 5.

【The invention's effect】

As described above, according to the present invention, the shaft supporting portion for swinging the trimmer driver and the hook engaging portion for attaching the trimmer driver to the trimmer support plate are coaxially arranged and independent from each other. Therefore, the external force exerted during the operation of the trimmer driver hardly acts on the hook engaging portion, and even if it does, it causes rattling to the shaft support portion of the trimmer driver. Since the trimmer driver is surely supported, the rattling of the shaft support portion does not cause noise increase due to rattling of the shaft support portion and poor sharpness due to a decrease in amplitude.

[Brief description of drawings]

1 and 2 are longitudinal cross-sectional views of an embodiment of the present invention, and FIG.
The figure is a perspective view of the same as above, FIG. 4 is a cutaway front view of the above, FIG. 5 is a cutaway front view of the above switch operating plate, and FIG. 6 is a sectional view taken along the line AA in FIG. Is an exploded perspective view of the same, FIG. 8 is a vertical sectional view of a conventional example, FIG. 9 is an exploded perspective view of the same as above, 3 is a trimmer blade block, 4 is a switch operating plate, 5 is a trimmer driver, 40 Is a trimmer support plate, 46 is a hook engaging hole, 48 is an annular rib, 51 is a hook, 52
Indicates a cylinder axis.

Claims (2)

(57) [Claims] 1. A trimmer device for an electric razor, comprising: a trimmer blade block supported by a trimmer support plate; and a trimmer drive element swingably supported to transmit reciprocating motion to a movable blade of the trimmer blade block. The trimmer driver is provided with a shaft supporting portion pivotally supported by the trimmer supporting plate, and a hook engaging portion which is rotatable about the shaft supporting portion and is coaxially provided with the trimmer supporting plate. An electric razor trimmer device characterized in that 2. The electric shaver according to claim 1, wherein the hook engaging portion comprises a hook projecting from the trimmer driver and a hook engaging hole provided in the trimmer supporting plate. Trimmer device.