JPH0540865Y2 - - Google Patents

Description

[Detailed description of the invention] Purpose of the invention (industrial field of application) This invention relates to the connection structure of both removable clamping plates in a replaceable blade type razor in which the blade is clamped between the two clamping plates. It is.

(Problems to be Solved by Prior Art and Ideas) Conventionally, this type of replaceable blade razor includes one described in, for example, Japanese Utility Model Publication No. 49-2693. In this razor, a pin is inserted into a support hole formed on the opposing inner surfaces of both clamping plates, and both clamping plates are rotatably supported around the pin. A leaf spring is interposed between the backs of both clamping plates that are above this pin, and the biasing force of this leaf spring spreads the space between the backs of both clamping plates and presses the abdomens of both clamping plates against each other. , the blade is held between these two abdomens.

However, since both clamping plates are rotatably supported by pins, when the double clamping plates are disassembled, the pins are also separated from the double clamping plates, increasing the number of parts and creating a risk of losing pins, etc. Ta.

Therefore, for example, a replaceable blade razor disclosed in Japanese Patent Publication No. 59-9186 has been considered. In this razor, a support hole is provided on the inner surface of one clamping plate, and a support shaft is provided on the inner surface of the other clamping plate. When joining both clamping plates together, with both clamping plates overlapped with each other and the support shaft positioned near the support hole, by shifting both clamping plates from each other, the support shaft is placed in the support hole. are inserted to support both clamping plates so that they can rotate relative to each other.

According to this razor, since no pins are used, there is no risk of losing pins etc. when both clamping plates are disassembled, but if a force is applied to both clamping plates in the axial direction of the support shaft, There was a risk that the support shaft would inadvertently come out of the support hole and the two clamping plates would separate from each other.

An object of the present invention is to prevent the two clamping plates from being accidentally detached by providing a stopper means between the support hole and the support shaft.

Structure of the invention (means for solving the problem) That is, the present invention has a support hole 14 formed in one of the clamping plates 2, as shown in the drawings of the embodiment described later.
A support shaft 18 formed on the other clamping plate 3 is inserted into the clamping plate 3 to rotatably support both clamping plates 2 and 3, and is interposed between the back parts 2b and 3b of both clamping plates 2 and 3. The biasing force of the spring 8 pushed apart between the backs 2b and 3b causes the clamping plates 2 and 3 to rotate, and with this rotation, the abdomens 2a and 3a of the clamping plates 2 and 3 are pressed against each other. In the razor in which the blade body 6 is clamped between the two abdomens 2a and 3a, the support hole 14 and the support shaft 18 are provided with locks that engage to prevent them from coming off when they are inserted into each other. 22 and 24 are provided.

(Function) In the present invention, the support shaft 18 is attached to both the clamping plates 2 and 3.
Even if an external force is applied in the axial direction, the locking portion 2
The engagement between 2 and 24 makes it difficult for the support shaft 18 to come out of the support hole 14.

(Example) An example of the present invention will be described below with reference to the drawings.

As shown in FIGS. 9 and 10, a fixed clamping plate 2 is integrally formed at the front end of the handle 1, and a notch 4 into which a movable clamping plate 3 is fitted inside the fixed clamping plate 2.
is formed. A blade clamping portion 5 is provided on the opposing inner surfaces of the abdomens 2a and 3a on the lower side of both clamping plates 2 and 3.
is formed, and the blade body 6 is held between the double blade body holding portions 5 as shown in FIGS. 1 and 6.

A recess 7 extending in the front-rear direction is formed on the inner surface of the back portion 2b on the upper side of the fixed clamping plate 2.
A leaf spring 8 is fixed inside. This leaf spring 8 is fixed at the center, and both elastic arms 8a extend in the front and back direction. On the other hand, a recess 9 extending in the front-rear direction is formed on the inner surface of the back portion 3b on the upper side of the movable clamping plate 3, facing the leaf spring 8.

A guide groove 10 is formed in the notch 4 on the inner surface of the fixed clamping plate 2 so as to extend in the vertical direction at approximately the center thereof in the vertical direction. is guide groove 11
is formed so as to face the guide groove 10 of the fixed clamping plate 2 and extend in the front-rear direction. Fixed clamping plate 2
A support cylinder 12 is formed on the front side of the guide groove 10, and a support cylinder 13 is formed at the rear end of the guide groove 10 adjacent to the stepped portion 4a at the rear end of the notch 4. Support holes 14 and 15 extending in the front-rear direction are formed in both support tubes 12 and 13.
Both support holes 14 and 15 are open to the guide groove 10. A support portion 16 is formed on the front side of the guide groove 11 of the movable clamping plate 3, and a support portion 17 is formed on the rear end of the guide groove 11. 18 and 19 are guide grooves 1
1 so as to extend rearward.

In particular, as shown in FIGS. 2 and 3, the front support shaft 18 has a neck portion 20 extending from the support portion 16;
It consists of a head 21 formed at the tip of the neck 20, and a stepped locking part 22 is formed between the head 21 and the neck 20. On the other hand, a locking portion 24 is formed at the rear end portion of the front support tube 12 . Further, the maximum outer diameter of the support shaft 18, that is, the outer diameter of the locking portion 22, is slightly smaller than the inner diameter of the front support hole 14.

Now, when connecting the movable clamping plate 3 to the fixed clamping plate 2, as shown in FIG. 2
The leaf spring 8 on the back 2b of the movable clamping plate 3 is attached to the back 3b of the movable clamping plate 3.
(see Figures 5 and 6)
(see figure), the movable clamping plate 3 is slid rearward while resisting the biasing force of the leaf spring 8 and is coupled to the fixed clamping plate 2.

In the middle of the connection, as shown in FIG. Both support shafts 18 and 19 are located in front of both the front and rear support cylinders 12 and 13 of the fixed clamping plate 2,
From this state, when the movable clamping plate 3 is moved backward along the inner surfaces of the fixed clamping plate 2, the first to
As shown in FIG. 4, both support shafts 18 and 19 are inserted into support holes 14 and 15 of both support cylinders 12 and 13.
At this time, the head 2 of the front support shaft 18 of the movable clamping plate 3
1 is the locking part 2 of the support tube 12 on the front side of the fixed clamping plate 2
4, the movable clamping plate 3 is expanded by the outer diameter difference between the head 21 and the neck 20 of the support shaft 18 due to the biasing force of the leaf spring 8 of the fixed clamping plate 2, and the movable clamping plate 3 is expanded by the outer diameter difference between the head 21 and the neck 20 of the support shaft 18.
4 and the support shaft 18 are misaligned, and the stepped locking portion 22 of the support shaft 18 is engaged with the locking portion 24 of the support tube 12 of the fixed clamping plate 2.

In this engaged state, both support shafts 18 and 19 can rotate relative to both support holes 14 and 15, and the backs 2b and 3b of both clamping plates 2 and 3 are pushed apart by the leaf spring 8, allowing both clamping plates to be rotated. The plates 2 and 3 are rotatable around the support holes 14 and 15 and the support shafts 18 and 19. In order to hold the blade 6 in the blade body clamping portion 5 of both clamping plates 2 and 3, the back parts 2b and 3b of both clamping plates 2 and 3 are held by leaf springs 8.
The blades 6 are pressed against each other against the biasing force to open the space between the two blade attachment parts 5, and the blade 6 is inserted between them. When the pressure on the back portions 2b, 3b is released, the urging force of the leaf spring 8 causes the back portions 2b, 3 of the clamping plates 2, 3 to
b, 3b are pushed apart, and the blade body 6 can be reliably held between the double blade body holding parts 5.

In particular, in this embodiment, when the front support shaft 18 is inserted into the front support hole 14 in the above-described coupled state, the support shaft 18 and the support cylinder 12 are mutually connected to each other at their locking portions 22 and 24. Because they are engaged, the support shaft 18 is difficult to come out of the support hole 14, and even if an external force is applied to both the clamping plates 2, 3 in the axial direction of the supporting shaft 18, the clamping plates 2, 3 will not become immobile. It is possible to prevent them from leaving inadvertently.

When removing the movable clamping plate 3 from this coupled state, press the approximate center between the front and rear support shafts 18 and 19 of the movable clamping plate 3 with the pad of your thumb against the biasing force of the leaf spring 8. In this state, while aligning the centers of the support holes 14 and 15 of the front and rear support tubes 12 and 13 of the fixed clamping plate 2 with the axes of the front and rear support shafts 18 and 19 of the movable clamping plate 3, the movable clamping plate 3 is moved. When the clamping plate 3 is slid forward,
The locking part 22 of the front support shaft 18 of the movable clamping plate 3 is disengaged from the locking part 24 of the front support cylinder 12 of the fixed clamping plate 2, and both the front and rear support shafts 18, 19 are connected to the front and rear support cylinders 12,
13 through the support holes 14 and 15, and enters the state shown in FIGS. 7 and 8, and in this state, the movable clamping plate 3
can be removed from the fixed clamping plate 2.

In the other embodiment shown in FIGS. 11 and 12, the front and rear support tubes 12, 13, the front and rear support shafts 18, 19, etc. are changed, and in particular, there is a notch 23 at the rear end of the front support tube 12. is formed, and a step-like locking portion 24 of this notch portion 23 is formed.

In the embodiment described above, a pair of front and rear support holes 14, 15 and support shafts 18, 19 are formed in both clamping plates 2, 3, but even if the number of these is three or more, It may be just one if it is made a certain length.

Effects of the Invention In short, according to the present invention, since the locking portions 22, 24 are provided in the support hole 14 and the support shaft 18, which are the rotational support portions of both clamping plates 2, 3, the locking portions 22, 24
This makes it difficult for the support shaft 18 to come out of the support hole 14, and it is possible to prevent the two clamping plates 2 and 3 from coming off inadvertently.

[Brief explanation of the drawing]

Fig. 1 is an assembled perspective view showing the state in which both clamping plates are connected to each other, Fig. 2 is an enlarged sectional view taken along the line X ₁ - X ₁ of Fig. 1, and Figs. 3 and 4 are parts of Fig. 2. Enlarged view,
Figure ₅ is an enlarged sectional view taken along the line X ₂ - X ₂ in Figure 1, Figure ₆ is an enlarged sectional view taken along the line X 3 - 8 is an enlarged sectional view taken along the Y-Y line in FIG. 7, FIG. 9 is a perspective view showing the inside of the fixed clamping plate, and FIG. 10 is a perspective view showing the inside of the movable clamping plate. , FIGS. 11 and 12 show other embodiments, in which FIG. 11 is a diagram equivalent to the aforementioned FIG. 2, and FIG. 12 is a diagram equivalent to the aforementioned FIG. 8. 1...Handle, 2...Fixed clamping plate, 2a...Abdomen,
2b... Back, 3... Movable clamping plate, 3a... Abdomen, 3b... Back, 6... Blade, 8... Leaf spring,
14, 15... Support hole, 18, 19... Support shaft, 2
2, 24...Locking part.

Claims (1)

[Claims for Utility Model Registration] A support shaft 18 formed in the other clamping plate 3 is inserted into a support hole 14 formed in one clamping plate 2, and both clamping plates 2 and 3 are rotated relative to each other. The clamping plates 2 and 3 are supported by a biasing force of a spring 8 interposed between the backs 2b and 3b of the clamping plates 2 and 3, and the clamping plates 2 and 3 are rotated by pushing out the space between the backs 2b and 3b. In a razor in which the blade body 6 is clamped between the abdomens 2a, 3a by pressing the abdomens 2a, 3a of the clamping plates 2, 3 against each other as the blades rotate, the support hole 14 and the support shaft 18 are provided with 1. A replaceable blade type razor characterized by being provided with locking parts 22 and 24 that engage to prevent the blades from coming off when they are inserted into each other.