JPH0246841Y2 - - Google Patents

Description

[Detailed Description of the Invention] Purpose of the Invention (Field of Industrial Application) The present invention relates to a razor cartridge that is detachably supported on a holder.

(Prior Art) As for a razor having a fitting groove for attaching a holder on the back side of a razor cartridge, as described in U.S. Pat. There is one in which a pair of engaging protrusions projecting outward in the width direction is provided on the support base, and a locking protrusion for locking these engaging protrusions is formed in the fitting groove. In these inventions and devices, when the engaging protrusion of the support base is fitted into the fitting groove of the cartridge, the engaging protrusion is fitted into the locking protrusion of the fitting groove. ing.

However, in such a razor, if a dimensional error occurs in the razor cartridge and holder when they are formed, and the width of the engaging protrusion of the holder becomes narrower than necessary than the width of the fitting groove of the cartridge. After the holder was attached to the razor cartridge, the cartridge sometimes spontaneously moved along its length during use.

(Problem to be Solved by the Invention) Therefore, the present invention is intended to solve the problem that the razor cartridge naturally moves in the length direction when the holder is attached to the razor cartridge. be.

Structure of the Invention (Means for Solving the Problems) In order to solve the above problems, the present invention provides a fitting device which is provided with a pair of clamping pieces 6 on the back surface which is detachably attached to the holder 1. A groove is formed in both clamping pieces 6, and at least a pair of locking protrusions 8 that lock the support base 2 of the holder 1 when the support base 2 of the holder 1 is inserted into the fitting groove 5. a plurality of locking portions that lock both longitudinal ends of one support base 2, and at least one of these locking portions is formed.
The tip of an elastic piece 9 formed at the end of the clamping piece 6 is movable between an allowable position that allows insertion and removal of the support base 2 of the holder 1 and a locking position that locks the support base 2. It was established in

(Function) To attach the holder 1 to the razor cartridge 4, as shown in FIG. Insert it in a shape. Then, as shown in FIGS. 2 and 3, one of the locking parts protruding from the elastic piece 9 is pressed toward the front side of the razor cartridge 4 by the support base 2 of the holder 1, and the elastic piece 9 and the other locking part are pressed against the front side of the razor cartridge 4. It bends toward the front side of the razor cartridge 4 against the elasticity and is located at the permissible position. When the tip of the holder 1 in the insertion direction comes into contact with the other locking part, the one locking part returns to the original locking position together with the elastic piece 9, and the holder 1 The rear end portion in the insertion direction is locked by the other locking portion. At the same time, the support base 2 is locked by the locking projections 8 of both clamping pieces 6,
The holder 1 is immovably fixed to the razor cartridge 4.

(Example) Hereinafter, examples 1 to 5 that embody the present invention will be described.
This will be explained according to the diagram.

As shown in Figure 1, 1 is a razor holder, 2
is a support stand provided on the head of the holder 1, and a pair of plate-shaped engagement protrusions 3 are provided on both front and rear (left and right in FIG. 5) edges of the support stand provided on the head of the holder 1. It is formed over a period of time.

4 is a razor cartridge that is removably attached to the holder 1; 5 is a fitting groove provided on the back side of the razor cartridge 4, which extends over the entire length of the razor cartridge 4; There is. Reference numeral 6 denotes a pair of clamping pieces erected on both front and rear sides of the fitting groove 5, one end of the front clamping piece 6 (the first
A retaining protrusion 7 is provided at the right end in the figure. Reference numeral 8 denotes a pair of locking protrusions formed on the tip edges of both clamping pieces 6, which protrude in directions facing each other. These locking protrusions 8 are located slightly closer to the retaining protrusion 7 than the longitudinal center of the razor cartridge 4.

Reference numeral 9 denotes a pair of elastic pieces formed at the other ends of both clamping pieces 6, which have elasticity to bend toward the surface of the razor cartridge 4. Reference numeral 10 denotes a locking projection formed protrudingly on the inner surface of the tip end of both the clamping pieces 9, and the back surface (upper surface in the drawing) of each is formed in an arc shape.

Reference numeral 11 denotes a pair of guide grooves provided on the inside of both clamping pieces 6, which guide the engagement protrusion 3 of the support base 2 into the fitting groove 5.
This is to guide you inside. Each guide groove 11
are inclined portions 11b that are inclined from both ends of the razor cartridge 4 toward the surface thereof so as to be deepest at positions corresponding to the respective locking protrusions 8;
11c. 11a is an open end portion of the guide groove 11 provided on the elastic piece 9 side.

To attach the holder 1 to the razor cartridge 4 configured as described above, as shown in FIGS.
The support base 2 of the holder 1 is inserted obliquely from the open end 11a toward the front surface of the razor cartridge 4. Then, the locking protrusions 10 protruding on both elastic pieces 9 are pressed toward the surface side of the razor cartridge 4 by both engaging protrusions 3 of the holder 1, and both elastic pieces 9
The razor cartridge 4 is bent toward the surface side against the elasticity of the razor cartridge 4. When the holder 1 is inserted as shown in FIG. Insertion direction tip 2
When a corresponds to both the locking protrusions 8, it then follows the oblique portion 11c as shown in FIG. As shown in FIG. 4, when the tip 2a of the holder 1 in the insertion direction comes into contact with the retaining projection 7, the pair of locking projections 10 return to their original positions together with the elastic pieces 9 due to their elasticity. , the rear end 2b of the support base 2 in the insertion direction
is locked by both locking protrusions 10. At this time, the back surfaces of both engaging projections 3 of the holder 1 are locked inside the locking projections 8 of both clamping pieces 6, and the holder 1 is immovably fixed to the razor cartridge 4. Therefore, in this state, there is no risk that the razor cartridge 4 will naturally move in its length direction.

When inserting the support base 2 into the fitting groove 5 as described above, both guide grooves 11 are connected to each locking protrusion 8.
Diagonal portion 11 which becomes deepest at the position corresponding to
b, 11c, and therefore the gap between the guide groove 11 and the locking protrusion 8 is wide, so that the holder 1 can be moved smoothly.

Furthermore, when replacing the razor cartridge 4 with another cartridge, the holder 1 is moved toward the open end 11a of the razor cartridge 4 with some force. Then, as in the case of attaching the holder 1 to the razor cartridge 4, both locking protrusions 10 are pressed toward the surface side of the razor cartridge 4 by the engagement protrusions 3 of the holder 1, and due to the elasticity of both elastic pieces 9. The razor cartridge 4 is bent toward the surface side against the resistance. Therefore, the rear end 2b of the support base 2 in the insertion direction is unlocked, and the holder 1 is then moved along the guide groove 11.
What is necessary is to further move it toward the rear end portion 2b side in the insertion direction.

The present invention is not limited to the above embodiments,
It is also possible to embody it as follows.

(1) As shown in FIG. 6, two or more locking protrusions 8 are formed protruding from the tip edges of both clamping pieces 6.

(2) As shown in FIG. 7, elastic pieces 9 with locking protrusions 10 are formed at both lengthwise ends of both clamping pieces 6, and both lengthwise ends of the razor cartridge 4 are connected to open ends 11a. to do.

(3) As shown in FIG. 8, two or more locking protrusions 8 are formed protruding from the tip edges of both clamping pieces 6, and an elastic piece 9 provided with locking protrusions 10 is provided along the length of both clamping pieces 6. Formed on both ends in the horizontal direction.

(4) As shown in FIG. 9, the guide groove 11 should be formed not in an oblique shape but in a straight line with a constant depth.

Furthermore, a retaining protrusion 7 may be formed at one end in the length direction of both clamping pieces 6, or an elastic piece 9 and a locking protrusion 10 may be provided at both ends of one clamping piece 6.

Further, in the embodiment described above, the elastic piece 9 is formed so as to have the elasticity to bend toward the surface of the razor cartridge 4, but it can also be formed so as to have the elasticity to bend in the front-rear direction.

Effects of the Invention As detailed above, the present invention allows the holder to be immovably fixed to the razor cartridge, and prevents the cartridge from naturally moving along its length after being fixed during use. can be prevented. What's more, the razor cartridge can be easily attached and removed when replacing the razor cartridge, and there is no need to change the shape of the holder, compared to conventional holders. It has excellent effects and can be used removably.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing an embodiment of the present invention with the holder removed from the razor cartridge, Figs. Side view showing the state in which the razor cartridge is attached, Nos. 6 to 9
Each figure is a sectional view showing another example of the razor cartridge. DESCRIPTION OF SYMBOLS 1... Holder, 2... Support stand, 4... Razor cartridge, 5... Fitting groove, 6... Clamping piece, 8...
...Latching protrusion piece, 9...Elastic piece.

Claims (1)

[Claims for Utility Model Registration] 1. A fitting groove 5 with a pair of clamping pieces 6 is formed on the back surface which is detachably attached to the holder 1. At least a pair of locking protrusions 8 that lock the support base 2 when the base 2 is inserted into the fitting groove 5, and a plurality of locking protrusions 8 that lock both longitudinal ends of the support base 2 of the holder 1. and at least one of the locking portions is positioned between a permissible position where the support base 2 of the holder 1 is allowed to be inserted and removed and a lock position where the support base 2 is locked. A razor cartridge with replaceable blades, characterized in that a displaceable elastic piece 9 is disposed at the tip of an elastic piece 9 formed at the end of the clamping piece 6. 2. The plurality of locking parts are a retaining protrusion 7 formed at one end of one of the clamping pieces 6 and a pair of locking protrusions 10 formed at the other ends of both clamping pieces 6,
The alternative set forth in claim 1 of the utility model registration claim, characterized in that these locking protrusions 10 are provided protrudingly from the tips of a pair of elastic pieces 9 that have elasticity to bend toward the front surface of the razor cartridge 4. Blade type razor cartridge. 3. The replaceable blade type according to claim 1, wherein the plurality of locking portions are locking protrusions 10 on the elastic pieces 9 formed on both step portions of both clamping pieces 6. Razor cartridge. 4. The replaceable blade razor cartridge according to claim 1, wherein both the clamping pieces 6 are provided with a pair of guide grooves 11 on their inner sides. 5 The guide groove 11 has a slanted part 11 that is inclined to be deepest at a position corresponding to the locking protrusion 8.
4. The replaceable blade razor cartridge according to claim 4, characterized in that the blades b and 11c are formed. 6. The replaceable blade razor cartridge according to claim 4, wherein the guide groove 11 is formed in a straight line with a constant depth.