JPH0135716Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to a barber razor with a detachable replaceable blade.

(Prior art) A half-split cover body is hingedly connected to a main body having a handle portion and a half-split-shaped part integral therewith, and the half-split-shaped part of the main body and the half-split cover body are connected on one side of the hinge axis. A replacement blade is held between the blades, and the wedge sliding groove is formed substantially parallel to the hinge axis between the half-split part of the main body and the half-cover body on the opposite side of the hinge axis. A replaceable blade barber's razor of a type in which a sliding claw having a wedge portion is slid and the blade clamping force is adjusted by a wedge action between the wedge sliding groove and the wedge portion of the sliding claw is known. (For example, Tokuko Sho 53-
Publication No. 3684, Publication No. 59-27267, Publication No. 27267, Publication No. 59
-27268 Publication, Utility Model Application Publication No. 60-64771).

In the replaceable blade type barber razor of the above type, the wedge portion of the sliding claw has conventionally been a simple wedge piece (clump).

(Problems to be solved by the invention) Even when a conventional sliding claw is made of a synthetic resin molded product, the wedge portion is just a lump of wedge piece, so it has virtually no elasticity, and the holding force for the replacement blade is low. It is simply an inelastic wedge force and is inflexible. Therefore, users have difficulty determining how much sliding the sliding claw should do to obtain the appropriate gripping force for the replacement blade, and may end up injuring their fingers or vice versa by applying excessive force to the sliding claw. Since the sliding force applied to the sliding claw is too small, problems such as insufficient gripping force of the replacement blade occur.

In addition, due to variations in dimensional accuracy due to the processing of each part of the leather, and variations in assembly precision caused by the hinge connection of the half mold part and the cover body, on the other hand, the combination of the sliding pawl and the wedge sliding groove becomes tight. If the former is used, too much force will be applied and excessive wedge action will occur, resulting in damage to the hinge pin, the clamping end of the replacement blade, etc., or sliding. Problems such as early wear of the movable claws occur. If the latter is used, there will be a problem that the replacement blade will not be held properly.

Therefore, in order to equalize product quality, it is necessary to eliminate these two extremes or to perform high-precision processing in each process, which in turn increases the unit price of the product, causing problems in terms of cost.

(Means for solving the problem) The present invention hinges a half-split cover body to a main body having a handle part and a half-split part integral therewith, and the half-split part of the main body is connected to one side of the hinge axis. and the half-split cover body, and a replaceable blade is held between the half-split mold part of the main body and the half-split cover body on the opposite side of the hinge axis, and is formed substantially parallel to the hinge axis. A type of replaceable blade in which a sliding claw having a wedge portion is slid along a wedge sliding groove formed by the wedge, and the blade clamping force is adjusted by a wedge action between the wedge sliding groove and the wedge portion of the sliding claw. In the type barber razor, the wedge portion of the sliding claw has elasticity in a direction facing the half-split mold portion of the main body and the half-split cover body, and the wedge action provides an elastic blade holding force. It is characterized by the fact that it produces

(Function) In the replaceable blade type barber razor of the present invention, the wedge portion of the sliding claw has elasticity and generates an elastic blade holding force, so there is a certain amount of tolerance in the replacement blade holding position of the sliding claw. The flexibility within the range and the relatively large manufacturing tolerances of the leather components clearly solve the problems of the prior art mentioned above, making it easier to use and reducing costs. Ru.

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings, regarding a barber razor having a structure similar to that disclosed in Japanese Utility Model Application Publication No. 60-64771.

The main body 20 has a handle part 1 and a half-split part 2 that is integrated with the handle part 1. A half-split groove 3 is bored in the inner surface of the half-split part 2 in the extending direction, and a tubular part 4 is formed in the middle of the groove. is provided. The separate half-cover body 10 is approximately symmetrical to the half-split part 2 of the main body,
A half groove 11 is formed on the inner surface at a position opposite to the half groove 3, and when the inner surface of the cover body 10 is aligned with the inner surface of the main body half mold part 2, the groove 3 and the groove 11 are formed. It is designed to form a cylindrical cavity.
A tubular portion 12 is provided in the groove 11 of the cover body 10 at a position away from the tubular portion 4 of the main body half-split type portion 2 toward the distal end side in the extension direction, and a tubular portion 13 is provided at a position adjacent to the handle portion 1. However, the tubular portions 12 and 13 are provided with tubular portions 12 and 13, respectively.
Hinge pins 12a, 1 extending from the handle part 1 side
3a is implanted and fixed. tubular portions 4, 12,
Length and position of 13 and hinge pins 12a, 13a
The length of the hinge pin 12a is determined by overlapping the cover body 10 on the main body half-split part 2 at a position slightly shifted toward the distal end in the extension direction, and then sliding the cover body 10 toward the handle part 1 side. is inserted into the hinge pin hole of the tubular part 4, and at the same time the hinge pin 13a is inserted into the handle part 1.
The cover body 10 is fitted into a hinge pin hole 4a opened at the front end of the cover body 10 adjacent to the cover body 10, and the hinge pin hole 4a is appropriately determined so as to complete the hinge-type connection between the main body half-split mold part 2 and the cover body 10.

In the illustrated example, two pins 12a and 13a are fixed to the cover body 10 side, but on the contrary, the main body 2
The pins 12a and 13a may be fixed on the 0 side, or
One pin may be fixed to the cover body 10 side, and the other pin may be fixed to the main body 20 side.

The replaceable blade 22 includes the main body half-split part 2 and the cover body 1
The blade is clamped between the clamping surfaces 23' and 23'' provided on the inner surface of the blade, but when the blade is attached or removed, both clamping surfaces 2
There is a slight gap between 3′ and 23″, and
A wedge mechanism is provided to provide sufficient clamping force during use. That is, wedge sliding grooves 16' and 16'' are provided along the adjacent ridges of the main body half mold part 2 and the cover main body 10, respectively.Wedge sliding grooves 16' of the main body half mold part 2 and cover body 10
The wedge sliding grooves 16'' face each other to form a prismatic hollow wedge sliding path 16 having both side surfaces slightly tapered in the extending direction, and within the wedge sliding path 16, both sides tapered in the extending direction of the sliding pawl 17 are formed. The wedge part 18 having a surface can be slid.When the sliding claw 17 is slid toward the tip of the razor, the main body half-split part 2 is moved by the wedge action.
The gap between the peaks of the cover body 10 and the cover body 10 is pushed open, and the clamping surfaces 23',
23″ is tightened.

As described above, the half grooves 3 and 11 of the main body half part 2 and the cover body 10 face each other to form a cylindrical cavity, and the razor tip of this cylindrical cavity is connected to the protruding rod of the blade supply device. It can be an insertion hole for.

When the sliding pawl 17 is operated to slide along the wedge sliding grooves 16', 16'', the wedge sliding grooves 16', 16'' receive a frictional force from the sliding pawl in the sliding direction. Therefore, in the above structure, when the blade is clamped between the clamping surfaces 23' and 23'' and the sliding claw 17 is slid toward the tip of the razor in order to tighten the blade, the cover body 10 is moved by the frictional force. Since the razor is pushed along the hinge axis in the direction of the tip of the razor, that is, in the direction of being disassembled from the main body 20, there is a possibility that the razor will slide in the direction of disassembly from the main body 20, and in extreme cases, it may come off from the main body 20. be.

Therefore, a recess 30 is formed at the corner between the shoulder between the edge surface of the wedge sliding groove 16' of the half mold part 2 and the inner surface of the half mold part 2, and the inner surface of the half mold part 2. At the same time, at the corner between the shoulder between the edge surface of the wedge sliding groove 16' of the wedge sliding groove 16' of the cover body 10 and the inner surface of the cover body 10, Concave portion 3 protrudes toward the side of 20
A convex portion 31 that engages with 0 is provided.

The height of the convex portion 31 protruding from the inner surface of the cover body 10 is such that when the cover body 10 is hinged to the main body 20 and no replaceable blade is attached, the height of the convex portion 31 is such that the height of the convex portion 31 is equal to the height of each peak of the main body half-shaped portion 2 and the cover body 10. The convex portion 31 engages with the concave portion 30 when the replaceable blade is attached, which is equal to or slightly smaller than the gap formed between the adjacent inner surfaces facing each other.

Therefore, when assembling the cover body 10 to the main body 20 by hinge connection, and when disassembling the cover body 10 from the main body 20 after removing the replaceable blade, the halved mold part 2 and the peak part of the cover body 10 are adjacent to each other. The inner surfaces of the projections 3 can be opened until they have the above-mentioned distance from each other.
1 does not engage with the recess 30, sliding of the cover body 10 with respect to the main body 20 is allowed (7th to 10th
), when the replaceable blade 22 is inserted between the clamping surfaces 23' and 23'', the cover body 10 and the main body 20 mutually rotate around the hinge axis, and the half mold part 2 and the cover body 10 rotate. The gap on the inner surface adjacent to the peak is closed by an amount corresponding to the thickness of the replaceable blade 22, and the convex part 31 comes to engage with the concave part 30 (5th, 6th, 11th, 1st
Figure 2). As a result, the cover body 10 is prevented from sliding against the main body 20, so even if the sliding claw 17 is strongly pushed toward the tip of the razor in order to tighten and clamp the inserted replaceable blade 22 so that it can be used, the cover body 10 will not move. The cover body 10 is securely held by the engagement between the convex portion 30 and the concave portion 31, and there is no possibility that the cover body 10 will slide and come off from the main body 20.

In the illustrated embodiment, the protrusions 30 are protrusions in the form of prisms, as seen in FIG. 4, but they may also be protrusions arranged as points, for example protrusions in the form of cylinders, truncated cones, etc.

The basic structure explained above is
However, improvements made by the present invention will be explained below.

As mentioned above, the wedge portion 18 of the sliding pawl 17 was conventionally a mere lump with poor elasticity, but in the present invention, as shown in the figure, the wedge portion 18 is formed almost symmetrically on both sides. It has the shape of a leaf spring that is convexly curved outward, and there is a cavity between the two leaf spring-like sides. Therefore, the wedging force of the wedge portion 18 is elastic, and both sides of the wedge portion 18 elastically push open the wedge sliding surfaces 16', 16'' outward on both sides, and the clamping surfaces 23', 2
The clamping of the blade by the 3" takes place elastically.

The shape of the wedge portion 18 is not limited to that shown in the drawings, and various shapes can be considered, but it is an essential requirement of the present invention that it has elasticity in the left-right direction.

Therefore, the proper tightening position of the sliding claw 7 for clamping the blade is allowed within a relatively wide certain range, so the user does not have to worry about tightening the sliding claw 7. Furthermore, the feeling of tightening the sliding claws does not vary from razor to razor.

One protrusion 25 is formed on one side surface of the wedge 18, and a plurality of protrusions 27 are arranged in the corresponding sliding groove 16'' at intervals in the wedge sliding direction. The wedge 18 is provided with a plurality of protrusions 25, and the wedge sliding groove 16'' or 16' is provided with one protrusion 25 to lock the position of the sliding pawl in the sliding direction.
It is also possible to provide several protrusions 27. Sliding claw 17
extends rearward from the wedge portion 18, that is, toward the handle portion 1, and a finger rest portion 24 is provided at the rear end thereof. The finger rest 24 protrudes upward from a groove 29 that opens upward and is provided along the peak of the main body 20 so as to extend rearward from the wedge sliding path 16.
A finger can be slid inside in the longitudinal direction. To tighten the blade, place your thumb on the finger rest 24 and push it forward. In order to apply a relatively large force at this time, the upper surface of the finger rest 24 is sloped so that the front is high and the rear is low (not shown). Examples) are preferred.

It is preferable that the sliding pawl 17 is integrally molded as a whole from a synthetic resin material.

The second improvement is that a recess 32 is provided at a position on the laser tip side of the recess 30 of the half-split mold part 2 of the main body 20,
The convex portion 31 of the cover body 10 can be temporarily accommodated in the recess 32. As described above, when assembling (or disassembling) the cover body 10 to the half-split mold part 2 by hinge connection, since the replaceable blade is not inserted, the inner surface adjacent to the peak of the half-split mold part 2 and the cover body 10 can be opened until they have a distance that is equal to or slightly larger than the height of the convex portion 31 (7th
10, for details, see Utility Model Application Publication No. 60-64771). Therefore, theoretically, the cover body 10 can be allowed to slide on the main body 20 without providing the recess 32, and the hinge connection between the cover body 10 and the main body 20 can be attached and detached. However, when the cover body 10 is
When assembling into the half-split mold part 2 of 0, the hinge pin 12
It is not necessarily easy to align a, 13a with the pin hole of the tubular part 4 and the hinge pin hole 4a at the same time, and there is a lot of freedom due to the relative positional relationship between the cover body 10 and the half mold part 2. It turns out that it is preferable to give degrees. In order to provide this degree of freedom, the recess 32 is provided at the peak of the cover body 10 as described above.
is provided so that the convex portion 31 of the cover body 10 can temporarily enter the recess. The bottom surface of the recess 32 is preferably a slope whose depth gradually decreases toward the rear end of the razor as far as the inner surface of the half mold part 2, as seen in FIGS. 5-7 and 9. In that case,
By simply sliding the cover body 10 along the half-split mold part 2 toward the handle part 1 while the convex part 31 is in the concave part 32, the convex part 31 can be smoothly moved to a position opposite to the concave part 30. can be brought to

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing a state in which a barber razor according to an embodiment of the present invention is assembled, a replacement blade is attached, a sliding claw is slid toward the tip of the razor, and the replacement blade is tightened. FIG. 2 is a perspective view of a sliding claw which is an elastic structure according to an embodiment of the present invention. FIG. 3 is a perspective view of the half-split part of the leather shown in FIG. FIG. 4 is a perspective view of the leather cover body of FIG. 1. FIG. 5 is a plan sectional view of the upper part of the razor in a state before the sliding claw of the razor shown in FIG. 1 is slid to the replaceable blade tightening position. FIG. 6 is a sectional top plan view of the razor shown in FIG. 1 in a state in which the sliding claw has been slid to the replaceable blade tightening position. FIG. 7 is a plan sectional view of the upper part of the leather showing the relationship between the convex portion 31 and the concave portion 32 in a state before the leather of the present invention is hinged. FIG. 8 is a cross-sectional view of the leather showing the state shown in FIG. 7. Figure 9 shows the convex portion 3 of the leather in Figure 7 after it is hinged.
1 is a plan sectional view showing the relationship between the rising corner portion of the recess 30 and the recess 32; FIG. 10 is a cross-sectional view of the leather showing the state shown in FIG. 9. FIG. 11 is a cross-sectional view of the razor when the replaceable blade is attached in the state shown in FIG. 5. The broken line indicates the rising corner ridgeline of the recess 30. FIG. 12 is a plan sectional view showing a state in which the convex portion 31 in the state shown in FIG. 11 is locked at the rising corner of the concave portion 30. 1...Handle part, 2...Half-split part, 10...
...Cover body, 17...Sliding claw, 18...Wedge portion.

Claims (1)

[Claims for Utility Model Registration] (1) A half cover body is hingedly connected to a main body having a handle part and a half part integral therewith,
A spare blade is sandwiched between the half-split mold part of the main body and the half-split cover body on one side of the hinge axis, and the half-split mold part of the main body and the half-split cover body are held on the opposite side of the hinge axis. A sliding pawl having a wedge portion is slid along a wedge sliding groove formed substantially parallel to the hinge axis between the wedge sliding groove and the wedge portion of the sliding pawl. In the replaceable blade barber razor of the type that adjusts the holding force of the replaceable blade, the wedge portion of the sliding claw has elasticity in a direction facing each of the half-split mold portion of the main body and the half-split cover body. , a replaceable blade type barber razor characterized by generating an elastic replaceable blade clamping force due to the above-mentioned wedge action. (2) In the replaceable blade type hairdressing razor set forth in Claim 1 of the Utility Model Registration Claim, the wedge portion of the sliding claw has a central axis in the sliding direction of the sliding claw, and approximately 100 mm on both sides of the central axis. It has a pair of spring parts symmetrically curved so as to protrude outward toward the half-split mold part of the main body and the half-split cover body, respectively, and there is a cavity between the two spring parts. Replaceable blade type barber razor featuring: (3) In the replaceable blade type hairdressing razor according to claim 1 or 2 of the utility model registration claim, the wedge sliding between the half-split part of the main body of the wedge part of the sliding claw and the half-split cover body; A single (or a plurality of) first protrusions are formed on one side of the side surface that elastically presses each of the sliding grooves, and a plurality (or a single) of second protrusions are formed on the opposing surface of the wedge sliding groove, 1st and 2nd above
A replaceable blade type barber razor, characterized in that the position of the sliding claw in the sliding direction is locked by engagement of the protrusion. (4) The replaceable blade type hairdressing razor set forth in claim 1 of the utility model registration claim, wherein a hinge pin is fixed to the half cover body or the main body, and the above body or the half cover body is provided with a hinge pin. A hinge pin hole into which the hinge pin is inserted is provided, and by sliding the half cover body relative to the main body in the direction of the hinge axis, the hinge pin is inserted into the hinge pin hole and the half cover body is connected to the main body. A hinge connection is made with the split cover body, and the replaceable blade is held in relation to the surface of the half-split part of the main body forming the end face of the razor tip side of the wedge sliding groove and the hinge axis of the half-split part. A recess is provided in the corner between the surface and the inner surface on the opposite side, and the surface forming the end surface on the razor tip side of the wedge sliding groove of the half cover body and the hinge axis of the half cover body A convex portion is provided at a corner between the replaceable blade holding surface and the inner surface on the opposite side, the convex portion protruding from the inner surface toward the half-split mold portion of the main body so as to be able to engage with the recess; The height of the convex portion from the inner surface of the split cover body is such that when a replaceable blade is not clamped, there is a gap that can be formed between the half mold portion of the main body and the inner surface of each of the half cover body. In a replaceable blade type barber's razor, in which the convex part is set to engage with the concave part when the blade is held between the blades, the half-split part of the body on the tip side of the razor in the concave part. A replaceable blade type barber razor, characterized in that a recess is formed on the inner surface, and the protrusion can be temporarily accommodated in the recess. (5) The replaceable blade type hairdressing razor according to claim 4 of the utility model registration claim, characterized in that the bottom surface of the recess is a slope whose depth gradually decreases toward the rear end of the razor to the inner surface. Replaceable blade type barber razor.