JPH0544059U - Electric razor - Google Patents

Abstract

(57) [Summary] [Purpose] The trimmer blade can be reliably prevented from accidentally falling off. [Structure] On a trimmer base 54 of the trimmer blade 5, an elastic hook 58 having elasticity toward one side is provided so as to project downward, and at the same time, the elastic hook 58 protrudes in a direction opposite to an elastic exertion direction. The contact portion 501 is provided, and the stopper 7 for engaging the elastic hook 58 with the frame 7 to which the trimmer blade 5 is attached and the rib 7 for contacting the contact portion 501.
6 and 6 are provided.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an electric razor, in particular an electric razor which comprises a net blade and a trimmer blade so that both kinds of blades can be applied to the skin at the same time.

[0002]

[Prior Art]

 There is an electric razor in which both the net blade and the trimmer blade are arranged at almost the same height position so that both types of blades can be applied to the skin at the same time. An example of the head portion 2 of this electric razor is shown in FIG. A net blade 20 including an outer blade 21 having a large number of blade holes and an inner blade 22 slidably contacting the inner surface of the outer blade 21 is arranged in the central portion of the upper surface opening of the frame 7 formed in a rectangular tube shape. The trimmer blades 5 and 5 are provided on both sides of the net blade 20 in the opening. Each trimmer blade 5 is freely slidable vertically on the frame 7 by engaging the elastic hooks 58 of the trimmer base 54 at the lower ends of both ends with the stoppers 75 formed on the inner walls on both sides of the frame 7. And a float spring 57 provided on the trimmer base 54 is biased upward.

[0003]

[Problems to be solved by the device]

 In this case, since the trimmer blade 5 is attached by the elastic hook 58 protruding downward from the trimmer blade 5, there is a drawback that the upper part of the trimmer blade 5 is largely shaken. Further, since the elastic hooks 58 are springy toward the outside and engage with the frame 7, the elastic hooks 58 can easily escape to the inside, and the trimmer blades 5 easily come off when dropped. It has the drawback.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an electric razor capable of reliably preventing accidental detachment of a trimmer blade.

[0005]

[Means for Solving the Problems]

 Therefore, according to the present invention, on the trimmer base of the trimmer blade, an elastic hook having elasticity toward one side is provided so as to project downward, and the abutment projecting in a direction opposite to the elastic hooking direction is provided. And a rib on which the elastic hook engages and a rib on which the abutting portion abuts are provided on the frame to which the trimmer blade is attached.

According to the present invention, the contact of the abutting portion with the rib restricts the bending of the elastic hook in the opposite direction, so that the elastic hook does not accidentally come off.

[0007]

【Example】

 Hereinafter, the present invention will be described in detail with reference to an illustrated embodiment. The illustrated example is a reciprocating electric shaver that uses a dry battery as a power source and is a waterproof type. First, the overall structure will be described with reference to FIG. In the figure, reference numeral 1 denotes a main body, which comprises a bottomed cylindrical battery cover 1a, a cylindrical upper housing 1b, and a lid 1d for closing an upper end opening of the upper housing 1b which is obliquely directed. The motor 10 is disposed in the upper housing 1b. A holder 15 having a battery storage portion 13 is connected to the lower end of the upper housing 1b with screws, and the battery cover 1a covers the holder 15. In the figure, 1c is an accent ring attached to the outer peripheral surface of the upper end of the lower housing 1a, 16 is a holder 15 and is urged by a spring 17 to engage an engaging recess 18 on the inner surface of the battery cover 1a. An engaging piece for stopping 1a and 1g are O-rings for waterproofing.

On the front surface of the main body 1, a switch handle 60 that is vertically slidable with respect to the main body 1, a lock handle 61 for locking the upward movement (on operation) of the switch handle 60, and a switch A switch 6 is provided, which includes a cam 62 that rotates as the handle 60 is moved up and down, and a contact portion that is turned on and off by the cam 62.

The head portion 2 obliquely provided on the upper end of the main body 1 includes a frame 7 having a rectangular tubular shape, a net blade 20 arranged in the opening of the upper end surface of the frame 7, and both sides of the net blade 20. The inner blade 22 of the net blade 20 is composed of a pair of trimmer blades 5 and 5 arranged on the outer blade 21 and an inner blade 22 that slidably contacts the inner surface of the outer blade 21. Is connected to the motor 10. The driver 3 converts the rotational movement of the eccentric shaft 12 with a balancer attached to the output shaft of the motor 10 into a reciprocating motion to cause the inner blade 22 to reciprocate. In the figure, 39 is a push-up spring for urging the inner blade 22 toward the outer blade 21, 1e is a packing for dustproofing and waterproofing the penetrating portion of the driver 3 in the lid 1d, 1f is a fixing of the packing 1e. It is a holding plate for.

The head unit 2 will be described in more detail. The frame 7 has a lower edge portion at one end thereof connected to the main body 1 via a hinge, and a slide button 8 is vertically slidably provided on one surface side. As shown in FIG. 3, ribs 72, 73, 74 and 76 for guiding the vertical movement of the trimmer blade 5 and a shaft 71 for pivotally supporting a trimmer driver 9 described later are provided on the inner surface of the frame 7. A hook 70 for holding the outer blade 21 and a stopper 75 are formed. In addition, on the surface on which the slide button 8 is provided, a vertically long guide hole is provided between the ribs 73 and 74, and a vertically long guide hole is also provided on the shaft 71. The shaft 71 is provided on the inner surface of the slide button 8. It is projected.

On the other hand, the trimmer blade 5 includes a blade base 50, a push-up spring 51, a movable blade 52, a fixed blade 53, a trimmer base 54, and a trimmer driver 9 integrally formed with the trimmer base 54. The trimmer base 54 in which the fixed blade 53, the movable blade 52, and the push-up spring 51 are mounted between the upper edge and the blade base 50 is provided between the rib 72 of the frame 7 and the inner surface of the frame 7. A guide piece 55 to be inserted is provided, and a guide piece 56 to be inserted between the ribs 73 and 74 is provided. Further, a float spring 57 is provided to project from the upper portion of the guide piece 55 in the horizontal direction and downward from the lower end. An elastic hook 58 is provided so as to project, and an abutting portion 501 that comes into contact with the outer surface of the rib 76 is provided on the inner side surface of the vertical center portion of the guide piece 5.

The trimmer driver 9 is provided with a vertically long shaft hole 90 through which a shaft 71 is passed, and the upper end thereof is connected to the movable blade 52. The guide pieces 56, 56 are provided with thin pieces 59, 5 respectively. 9 are integrally connected, and an engaging groove 91 that engages with a joint 38 for connecting with the driver 3 is provided at the lower end. When the driver element 3 is reciprocated, the trimmer driver element 9 supported by the shaft 71 is swingably driven through the joint 38.

The trimmer base 54 thus attached to the frame 7 is restricted in its upward movement or clicked by the engagement of the elastic hook 58 and the stopper 75, as shown in FIG. At the same time, the tip of the float spring 57 elastically contacts the upper surface of the root of the hook 70, so that a spring force is applied to the frame 7 to bias the trimmer base 54 upward. For this reason, the shaft 71 is located below the shaft hole 90 provided in the trimmer driver 9, and when the trimmer blade 5 is pressed against the skin, the trimmer blade 5 resists the float spring 57. As a result, it is possible to sink only the upper and lower clearances α of the shaft 71 and the shaft hole 90. Further, the contact between the contact portion 501 and the rib 76 ensures that the engagement between the elastic hook 58 and the stopper 75 is maintained.

Then, as shown in FIG. 4, the rib 76 has a cross-sectional shape in which a portion in contact with the contact portion 501 is vertical, and an upper portion thereof is inclined outward. Therefore, even when the abutting portion 501 tries to ride on the rib 76 due to an assembling operation, a vertical movement of the trimmer blade 5, an external force, or the like, the abutting portion 501 is fitted in the normal position. On the other hand, the stopper 75 is chamfered at its upper end so that the elastic hook 58 can be easily inserted during assembly.

The trimmer blade 5 on the side on which the slide button 8 is arranged and on which the trimmer driver 9 is axially supported by the shaft 71 provided on the slide button 8 also performs the same movement. The trimmer blade 8 has a shaft 71 provided on the slide button 8 when the slide button 8 is slid upward, and the slide button 8 is connected to each guide piece 56 of the trimmer base 54. 5, the trimmer blade 5 also slides upward at the same time as shown in FIG. 5, and is click-fixed where the lower end edge of the elastic hook 58 engages with the upper end edge of the stopper 75. .. At this time, since the float spring 57 is separated from the hook 70, the trimmer blade 5 does not float.

Further, the joint 38 connecting the driver element 3 and the trimmer driver element 9 has engaging portions for engaging the trimmer driver element 9 at two upper and lower positions. The trimmer blade 5 is driven in the same manner so that the upper engaging portion 38b is engaged with the engaging groove 91 when the trimmer blade 9 moves upward in the engaging groove 91. However, because the gap between the upper and lower engaging portions 38a and 38b is larger than the vertical movement amount of the trimmer driver 9, that is, when the trimmer blade 5 is moved upward, it is engaged with the joint 38. Since the distance D from the mating portion to the shaft 71 is shortened, the movable blade 52 of the trimmer blade 5 is moved more when the trimmer blade 5 is moved upward than when the trimmer blade 5 is positioned below. Large amplitude and high cutting ability. X in FIG. 5B indicates the center of rotation when the frame 7 is hinged to the main body 1.

The embodiment shown in FIG. 11 shows that the skin contact member 77 is integrally formed with the trimmer base 54. In the above embodiment, the upper end surface of the frame 7 was used as the skin contact member, but in this case, the float of the trimmer blade 5 may cause the upper end surface of the frame 7 not to contact the skin. In view of the above, the skin contact member 77 is provided on the trimmer blade 5 itself that performs the float operation so that the skin contact action can always be obtained.

[0018]

[Effect of the device]

 As described above, according to the present invention, the elastic hook is prevented from being unintentionally disengaged because the elastic hook is regulated from bending in the opposite direction by the contact of the abutting portion with the rib. The contact of the contact portion with the rib also prevents the trimmer blade from swinging.

[Brief description of drawings]

FIG. 1 is a cutaway front view of an embodiment of the present invention, in which (a) shows a normal state and (b) shows a floating state.

FIG. 2 is a vertical sectional view of the entire electric shaver.

FIG. 3 is an exploded exploded front view.

FIG. 4 (a) is an enlarged sectional view of an elastic hook portion, and FIG. 4 (b) is A
It is a sectional view taken along line A-.

5 (a) and 5 (b) are a longitudinal sectional view and a cutaway front view showing a state in which one trimmer blade is projected upward.

FIG. 6 is a vertical cross-sectional view of another embodiment.

FIG. 7 shows a head portion of a conventional example, (a) is a plan view and (b) is a front view.

FIG. 8 is a vertical sectional view of the above.

FIG. 9 is a cutaway front view of the above.

[Explanation of symbols]

 5 trimmer blade 7 frame 58 elastic hook 75 stopper 76 rib 501 abutting part

Claims (1)

[Scope of utility model registration request] 1. An abutting portion, which is provided with an elastic hook having elasticity toward one side protruding downward on a trimmer base of a trimmer blade and protruding in a direction opposite to an elastic exertion direction of the elastic hook. The electric razor, wherein a frame to which the trimmer blade is attached is provided with a stopper with which the elastic hook engages and a rib with which the abutment portion abuts.