JPH04322689A - Hair cutter - Google Patents

Abstract

PURPOSE:To make the above cutter compact by making small a space for a drive transfer part in the cutter main body. CONSTITUTION:A drive transfer plate 53 wherewith a first drive level is separated from a driving source and driving force for a first cutting-edge part A is not transmitted, is provided. This drive transfer plate 53 is formed so as to be shifted in the direction perpendicular to the direction in which a trimming handle 4 is slidably shifted when the trimming handle 4 is projected.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hair cutter that cuts hair using a blade section consisting of a comb-shaped fixed blade and a movable blade that are in sliding contact with each other.

0002

[Prior Art] A hair cutter body is provided with two blade parts, a first blade part and a second blade part.When the first blade part A is driven, the second blade part B is stopped, and when the second blade part B is driven, the second blade part B is stopped. For example, there is a hair cutter equipped with a drive separation mechanism in which the first blade part A is stopped, as shown in US Pat. No. 3,690,000. As shown in FIG. 8(a), when the drive changeover switch 122, which has the second blade part B at the tip, is lowered, the drive rod 139 and the drive rod 138 are connected, and the hair cutter main body 1 The drive of a motor 110 provided therein is transmitted to the blade 105 as the first blade part A. Further, as shown in FIG. 8(b), when the drive selector switch 122 is raised to project the second blade part B, the drive rod 139 and the drive rod 138 are disconnected,
The drive rod 145 and a connecting plate 143 formed integrally with the drive changeover switch 122 are connected to each other so that the drive of the motor 110 is transmitted to the blade 108 as the second blade part B.

0003

[Problems to be Solved by the Invention] However, in the conventional example as described above, the drive changeover switch 122 and the connecting plate 1
43 is integrated with the drive selector switch 12.
The stroke of 2 is required as it is as the connection switching stroke of each drive rod in the hair cutter body 1,
For this reason, it is necessary to secure a space for the connection switching stroke within the hair cutter body 1, and the hair cutter body 1 must be made larger, resulting in a problem that the hair cutter becomes larger.

The present invention aims to solve the above-mentioned problems, and aims to provide a hair cutter that can be miniaturized by reducing the space of the drive switching section within the hair cutter body. It is something.

[0005]

[Means for Solving the Problems] In order to achieve the above object, the present invention separates the first drive rod from the drive source by moving in a direction perpendicular to the sliding direction of the trimmer handle when the trimmer handle is protruded. The blade is equipped with a drive switching plate that stops transmission of driving force to the first blade portion.

[0006]

[Operation] When the trimmer handle is protruded, the drive switching plate moves in a direction perpendicular to the sliding direction of the trimmer handle, separating the first drive rod from the drive source and moving the first drive rod away from the drive source.
The transmission of the driving force to the blade part is stopped, and when the trimmer handle is extended, only the second blade part provided at the tip of the trimmer handle is driven. Then, the drive switching plate that separates the first drive rod from the drive source moves in a direction perpendicular to the sliding direction of the trimmer handle.
Since the drive rod connection is separated,
There is no need to secure space within the hair cutter body for the sliding stroke of the trimmer handle as a changeover switch, and the drive switching section within the hair cutter body can be made smaller.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below based on illustrated embodiments. As shown in FIG. 4, the hair cutter has a blade block 2 disposed at the tip of a hair cutter body 1, and a finishing trimmer handle 4 protruded from the top surface so as to be freely stored. 2 has a first blade part A consisting of a comb-shaped fixed blade 22 and a movable blade 23.
Further, a second blade portion B consisting of a comb-shaped fixed blade 28 and a movable blade 29 is placed at the tip of the trimmer handle 4.

As shown in FIG. 5, the hair cutter main body 1 is composed of an upper housing 10 and a lower housing 17, which are engaged with each other and connected by a stopper 21.
A switch handle 5 is disposed in a mounting recess 10a provided on the upper surface of the upper housing 10, and a click plate 14 to be engaged with the switch handle 5 is disposed inside. Further, a motor 19 as a drive source and a circuit module 20 are arranged inside, and an eccentric cam 18 as a second drive rod having a drive shaft 18a press-fitted is press-fitted to the motor shaft 19a of the motor 19. The trimmer driver 11 is coupled to the eccentric cam 18. That is, the eccentric cam 18 is inserted into the connection opening 11a of the trimmer driver 11, so that the eccentric cam 18 and the trimmer driver 11 are connected. The eccentric cam 18 has an eccentric cam 50 as a first drive rod that can be freely connected and separated, and the eccentric cam 50 is connected to the eccentric cam 1.
A spring 51 biasing in eight directions and a spring stopper 52 stopping the spring 51 are press-fitted to the drive shaft 18a.

As shown in FIGS. 1 and 3, the eccentric cam 18
The through hole 50a of the eccentric cam 50 into which the drive shaft 18a is inserted has an opening at the end opposite to the eccentric cam 18 having a larger diameter than the opening at the end opposite to the eccentric cam 18. A stepped portion 55 is formed in the center of the through hole 50a. The end of the spring 51, which is inserted into the drive shaft 18a by a spring stopper 52 fixed to the tip of the drive shaft 18a of the eccentric cam 18, is locked in the stepped portion 55 of the through hole 50a. Cam 50 is eccentric cam 1
It is biased toward 8. Eccentric cam 50 and eccentric cam 1
8 have concave and convex portions 50b and 18b that engage with each other, respectively.
The eccentric cam 50 and the eccentric cam 18 are connected to each other so that they can be connected and separated by the engagement of the concave and convex portions 50b and 18b. In other words, the eccentric cam 50 and the eccentric cam 18 are connected to each other by the spring 51.
0 is biased by the eccentric cam 18 and the concave and convex portions 50b and 18b mesh with each other, so that they are normally connected, and the eccentric cam 50 resists the spring force of the spring 51. By moving in the opposite direction to 18, the eccentric cam 5
The uneven portion 50b of 0 and the uneven portion 18b of the eccentric cam 18 disengage and become separated. A drive switching plate 53 is disposed above the connecting portion between the eccentric cam 18 and the eccentric cam 50 so as to be movable up and down by a push-up spring 54. The drive switching plate 53 is vertically movable by the push-up spring 54, and when raised, the protrusion 53a provided at the top protrudes from the square window 33a provided in the storage groove 10b of the upper housing 10. and
When the trimmer handle 4 slides up, the camera back 7
The protrusion 53a is pushed downward by the protrusion 7c, and the drive switching plate 53 is lowered against the spring force. This drive switching plate 53 is disposed within the hair cutter main body 1 so as to straddle the connecting portion between the eccentric cam 50 and the eccentric cam 18, and has a notch 53 in the center.
b is provided with a contact portion 53c that comes into contact with the uneven portion 50b of the eccentric cam 50 when descending. Here, eccentric cam 5
The uneven portion 50b formed at 0 has an inclined surface on the end surface, and when the drive switching plate 53 descends, the contact portion 53c presses the uneven portion 53b of the eccentric cam 50, and the uneven portion 53b is formed on the end surface. Since the inclined surface is provided at the contact portion 53c, the eccentric cam 18 is pushed to the opposite side and retreated due to the pressure from the contact portion 53c, and the connection between the eccentric cam 18 and the eccentric cam 50 is broken, and the eccentric cam 50 is motor 19
The driving force from the eccentric cam 18 is not transmitted through the eccentric cam 18.

The blade block 2, which is detachably disposed at the tip of the hair cutter body 1, has a base plate 40, a fixed blade 22 fixed to the inner surface of the base plate 40, and a blade block 2 that is slidable with respect to the fixed blade 22. The movable blade 23 is made up of a movable blade 23 , a spring 24 biasing the movable blade 23 toward the fixed blade 22 , and a cam 25 fixed to the movable blade 23 .
2 and the movable blade 23 constitute a first blade part A, which locks one end of the board 40 to the lower housing 17 and a locking spring 16 attached to the lower housing 17.
It is attached to the hair cutter main body 1 by locking it to the base plate 40. When installed in this manner, the eccentric cam 50 connected to the eccentric cam 18 connected to the motor shaft 19a of the motor 19 engages with the vertical groove portion 25a of the cam 25, and the rotation of the motor 19 is controlled. Accordingly, the movable blade 23 is driven back and forth. The click plate 14 slidably disposed within the hair cutter body 1 has a click spring 14a that protrudes rearward, and further has a switch spring 56 fixed to its lower surface, which slides onto the surface of the upper housing 10. It is adapted to be engaged with a freely arranged switch handle 5. A dial 12 rotatably disposed within the hair cutter main body 1 has irregularities on its outer periphery, a round hole 12a on its inner surface, and a gear 27 on its inner surface. A protrusion 15a of a click spring 15 held by a rib protruding from the lower housing 17 is engaged with the round hole 12a of the dial 12, and the gear 27 is partially protruded from the upper housing 10. The rack 13 is engaged with the rack 13 which is slidably arranged with the
is adapted to slide along with the rotational movement of the dial 12. A locking protrusion 13a provided at the tip of the rack 13 projects from an opening 10c provided at the side of the upper housing 10 constituting the hair cutter body 1. Reference numeral 13a denotes an attachment as a cutting height adjuster (see Fig. (not shown). and dial 1
By turning 2 to move the locking protrusion 13a back and forth, the protrusion of the attachment can be adjusted, and the height of the beard trimmed by the first blade part A can be adjusted.

A locking groove 31 that continues in the longitudinal direction is provided on the side surface of the trimmer handle 4.
The trimmer handle 4 is slidably held with respect to the hair cutter main body 1 by engaging the rib 30 in the storage groove 10b provided on the upper surface of the upper housing 10. At this time, the groove depth of the storage groove 10b is approximately the same as the thickness of the trimmer handle 4,
When the trimmer handle 4 is stored in the storage groove 10b, the top surface of the trimmer handle 4 is attached to the hair cutter body 1.
It is designed so that it does not protrude above the top surface. A fixed blade 28 and a movable blade 29 that is slidable with respect to the fixed blade 28 are arranged at the front part of the trimmer handle 4. The fixed blade 28 and the movable blade 29 form a second blade part C. It is configured. The fixed blade 28 and the movable blade 29 have a small blade thickness and a smaller blade width than the first blade part B. By using such thin blades, the cutting position of the beard can be made as close to the skin as possible. It can be positioned close to the beard, and the beard can be cut from the root. In addition, the small width of the blade makes it easy to insert the blade even in narrow areas, and by gradually changing the cutting position of the beard while cutting, the cutting condition at each cutting position can be finely adjusted. It is now possible to adjust. A guide plate 32 fixed to the movable blade 29, a spring 8 biasing the movable blade 29 toward the fixed blade 28, and a spring 8 that engages with the guide plate 32 and protrudes from the back surface of the trimmer handle 4. Drive rod 6 held by ribs, trimmer handle 4
A driving portion for driving the second blade portion B is constituted by the rib protruding from the blade and the back plate 7 having a click spring 7a at the bottom thereof.

In terms of function, when the trimmer handle 4 is slid forward as shown in FIGS. 2 and 6, the click spring 7a provided at the lower part of the back plate 7 clicks into the protrusion 34 protruding from the upper housing 10. It is designed to be engaged and held in the slid-up position. At this time,
Projection portion 7c provided on back plate 7 of trimmer handle 4
The protruding part 53a of the drive switching plate 53 protruding from the square window 33a is pushed down by the tapered part 7b, and the uneven parts 50b, 18b of the eccentric cam 18 and the eccentric cam 50, which are press-fitted into the motor 19, are pressed together. is disengaged, so that the drive of the motor 19 is not transmitted to the eccentric cam 50. Furthermore, in the slid-up state, the upper housing 1
A drive rib 35 provided on the upper part of the trimmer drive element 11 protruding into the storage groove 10b from a square hole 33 provided at 0 engages with a vertical groove 6a provided at the rear of the drive rod 6, As a result, the trimmer driver 1 by the eccentric cam 18
The reciprocating motion of the blade 1 is transmitted to the drive rod 6, and the drive rod 6 transmits the reciprocating motion to the guide plate 32 around a fixed center portion, thereby driving the second blade portion C. .

When the trimmer handle 4 slides up, as shown in FIG. The drive switching plate 53 is pushed down into the hair cutter main body 1, and as the drive switching plate 53 is lowered, the abutting portion 53c of the drive switching plate 53 is connected to the eccentric cam 5.
0, the eccentric cam 50 is moved to the side opposite to the eccentric cam 18 by the drive switching plate 53, and the uneven part 50b of the eccentric cam 50 and the uneven part 18b of the eccentric cam 18 are moved. is disengaged, and the driving force from the motor 19 as a drive source is stopped from being transmitted to the eccentric cam 50 via the eccentric cam 18, and since the eccentric cam 50 does not rotate, the first blade portion A rotates. do not. In other words, when the trimmer handle 4 is in the state of being slid up by the drive switching plate 53 that moves in conjunction with the trimmer handle 4, the drive of the first blade part A is stopped, the second blade part B is driven, and the trimmer handle 4 is moved. When the handle 4 is stored, the drive switching structure is such that the first blade part A is driven and the second blade part B is stopped.

[0014]

[Effects of the Invention] As mentioned above, the hair cutter of the present invention has the following features:
The switching plate is provided with a switching plate that moves in a direction perpendicular to the sliding direction of the trimmer handle when the trimmer handle is protruded, separates the first drive rod from the drive source, and stops transmission of the drive force to the first blade part, The switching plate that separates the first drive rod from the drive source moves in a direction perpendicular to the sliding direction of the trimmer handle to separate the connection of the first drive rod, so it is inside the hair cutter body. There is no need to secure space for the sliding stroke of the trimmer handle as a changeover switch, and the drive changeover section inside the hair cutter body can be made smaller, allowing the hair cutter to be more compact. It is something.

[Brief explanation of drawings]

FIG. 1 shows one embodiment of the present invention, and is a sectional view of a trimmer handle in a stored state.

FIG. 2 is a sectional view of the above trimmer handle in a protruding state.

FIG. 3 is a partially enlarged sectional view showing how the eccentric cam 50 is attached.

FIG. 4 is a perspective view of a hair cutter according to the present invention.

FIG. 5 is an exploded perspective view of the same as above.

FIG. 6 is a perspective view showing the trimmer handle in a protruding state.

FIG. 7 is an explanatory diagram illustrating the internal configuration.

FIG. 8 is a sectional view showing an operating state in a conventional example.

[Explanation of symbols]

A First blade part B Second blade part 1 Hair cutter body 4 Trimmer handle 53 Drive switching plate

Claims (1)

[Claims] Claim 1: A first blade part is provided at the tip of the hair cutter body, and is slidably provided on the outer surface of the hair cutter body, and the first blade part is provided at the tip of the trimmer handle by sliding movement of the trimmer handle. A second blade part that can protrude forward than the second blade part is provided, and a second blade part that transmits driving force from a drive source disposed inside the hair cutter body to the first blade part and the second blade part. The first drive rod transmits the driving force from the drive source to the first blade part when the trimmer handle is retracted, and the second drive rod transmits the driving force when the trimmer handle is extended. In a hair cutter in which the driving force from the driving source is also transmitted to the second blade part, when the trimmer handle is protruded, the first driving rod is moved from the driving source by moving in a direction perpendicular to the sliding direction of the trimmer handle. A hair cutter comprising a drive switching plate that is separated to stop transmission of driving force to the first blade part.