JPH0546881Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to cutlery such as knives and saws whose blades can be folded and stored in the handle.

[Problems to be solved by conventional techniques and inventions] Conventionally, this type of cutlery has a locking portion that fixes the blade to the handle when the blade is extended and retracted;
It includes a leaf spring that maintains the locked state, and an operation part that operates the locking part on the handle side against the elasticity of the leaf spring when the blade is moved in and out of the handle, and at least the plate spring is connected to the locking part. It was formed separately from the control panel and the operating section.

Therefore, during manufacturing, it is necessary to assemble the locking part, the operating part, and the leaf spring separately, which is cumbersome and there is a risk of losing the leaf spring.

Therefore, the purpose of the present invention is to simplify the assembly work during manufacturing by integrally molding the locking part, the operating part, and the leaf spring, and to eliminate the loss of the parts that make up the operating member, especially the leaf spring. It is an object.

[Means for solving the problem] In order to achieve the above purpose, in the present invention,
The blade is provided so that it can move in and out of the hilt, and there is a locking part between the handle and the blade that fixes the blade to the handle when the blade is extended and retracted, and both of these locking parts are made of elastic material. A blade retractable type with a leaf spring that holds the blade in a locked state, and an operation part on the handle that operates the locking part on the handle side against the elasticity of the leaf spring when the blade is moved in and out of the handle. The gist of the knife is that the locking part on the handle side, the leaf spring, and the operating part are integrally molded from plastic to form one operating member.

[Function] When using the retractable blade of the present invention,
The blade protrudes from the handle and is locked to each other by both locking parts, and this locked state is maintained by the elasticity of the leaf spring.

To retract the blade into the handle when not in use, operate the operating part against the elasticity of the leaf spring, release the locking of both locking parts, and retract the blade into the handle.

When the blade is retracted, the blade is locked to the handle by both locking parts, and this locked state is maintained by the elasticity of the leaf spring.

When in use, in order to make the blade protrude from the handle, the operating section is operated against the elasticity of the leaf spring, the locking by both locking parts is released, and the blade is made to protrude from the handle.

[Embodiment] Hereinafter, a retractable blade type saw which is an embodiment of the present invention will be described with reference to the drawings.

As shown in FIGS. 7 and 8, the handle 1 is a combination of a pair of left and right handle members 1a and 1b, and a storage opening 3 is formed at the lower end of the handle 1.
At the front end of the handle 1, a blade attachment opening 4 communicating with the storage opening 3 is formed by cutting out the upper and lower sides.

As shown in FIGS. 1, 2, and 4, the base end 2a of the blade 2 is fitted into the mounting opening 4, and the base end 2a of the blade 2 is inserted into the mounting opening 4.
A is rotatably supported by a bolt 7 and a nut 8 between a support protrusion 6 formed on the inner surface of the front end of the left handle member 1a and the inner surface of the front end of the right handle member 1b.

As shown in FIGS. 1 and 6, the base end 2a of the blade 2
The outer periphery of the bolt 7 is formed in a semicircular arc shape with the bolt 7 as the center, and the base end 2a is provided with a locking recess 9 and a locking hole 10 that are shifted by about 180 degrees on the rotation locus. There is.

As shown in FIGS. 1 to 5 and 7, an operating member 11 is fitted into the front end of the left handle member 1a. A bearing protrusion 12 having a fitting groove 12a is formed in the center of the inner surface of the operating member 11, and a shaft 14 supported by a pair of bearings 13 on the inner surface of the left handle member 1a is provided in the fitting groove 12a. are fitted, and the operating member 11 can be tilted around this shaft 14. A pair of upper and lower leaf springs 15 extend forward from the front end protrusion 11a of the operating member 11, and the front ends 15a of both leaf springs 15 are in contact with the inner surface of the left handle member 1a, respectively. Front end protrusion 1 of operating member 11
A locking protrusion 16 is formed on 1a. An operating portion 17 exposed to the outside of the left handle member 1a is formed on the outside of the operating member 11, and by operating this operating portion 17, the operating member 11 can be tilted.

In particular, the operating member 11 having the bearing protrusion 12, leaf spring 15, locking projection 16, and operating portion 17 is integrally molded from plastic.

In addition, as shown in FIGS. 7 and 8, the left handle member 1a
A pair of fitting uneven portions 19 and 18 that fit into each other are provided on the inner surface of the rear end and the inner surface of the rear end of the right handle member 1b, respectively.
are provided, and the left and right handle members 1a, 1b are fastened and fixed by the bolt 7 and nut 8 after the fitting concavo-convex portions 19, 18 are fitted to each other and overlapped.

Now, in the saw configured in this way, when in use, the blade 2 protrudes from the handle 1, and the locking protrusion 16 of the operating member 11 is inserted into the locking recess 9 of the blade 2, as shown in FIGS. is engaged, and this engaged state is maintained by the elasticity of the leaf spring 15 of the operating member 11. The engagement of the locking protrusion 16 into the locking recess 9 restricts rotation of the blade 2. Note that even if this engagement is removed, both handle members 1a, 1
The base end 2a of the blade 2 is attached to the stopper part 20 at the front end of b.
The stopper portion 21 contacts the blade 2 to prevent the blade 2 from rotating upward.

To store the blade 2 in the handle 1 when not in use, press the rear end side of the operating part 17 of the operating member 11 with your finger from the outside of the handle 1, and as shown in FIG.
1 about the shaft 14, the front end side of the operating member 11 is tilted outward against the elasticity of the leaf spring 15. As a result, the locking protrusion 16 of the operating member 11 can be removed from the locking recess 9 of the blade 2, and the blade 2 can be rotated downward and stored in the handle 1 through the storage opening 3.

After storage, when you release your finger from the operating part 17, the operating member 11 returns to its original state due to the elasticity of the leaf spring 15.
As shown in FIG. 6, the locking protrusion 1 of the operating member 11
6 is engaged in the locking hole 10 of the blade 2, the rotation of the blade 2 is restricted, and the stored state of the blade 2 is maintained.

When you want to use it again, press the operating part 17 with your finger, tilt the operating member 11, disengage the locking protrusion 16 from the locking hole 10 of the blade 2, rotate the blade 2 downward, and release the handle 1. protrude from

In this embodiment, since the operating member 11 is integrally molded, the assembly work during manufacturing is simple, and there is less risk that the parts constituting the operating member 11, especially the leaf spring 15, will be lost.

Further, after fitting the fitting concavo-convex portions 19 and 18 of the left handle member 1a and the right handle member 1b to each other and overlapping them, the handle 1 can be fixed by simply fastening with one set of bolts 7 and nuts 8. Since it can be assembled, the saw of this embodiment can be easily assembled during manufacturing in this respect as well.

[Effects of the invention] As detailed above, in the present invention, by integrally molding the locking part, the operating part, and the leaf spring,
Assembling work during manufacturing is simple, and there is less risk of losing parts constituting the operating member, especially the leaf spring.

[Brief explanation of the drawing]

Fig. 1 is a cross-sectional view of a saw that embodies the present invention as seen from the rear side when the saw is in use, Fig. 2 is a front view of the saw, and Fig. 3 is a cross-sectional view of the saw shown in Fig. 1. View, Figure 4 is B-B in Figure 1
Figure 5 is a diagram corresponding to Figure 4 showing a state in which the operating member and the blade are unlocked; Figure 6 is a cross-sectional view of the same saw seen from the back when not in use; FIG. 7 is a front view showing the inside of the left handle member of the same saw, and FIG. 8 is a front view showing the inside of the right handle member of the same saw. Handle...1, Blade...2, Locking recess...9, Locking hole...10, Operating member...11, Leaf spring...1
5. Locking protrusion...16, Operation part...17.

Claims (1)

[Scope of Claim for Utility Model Registration] The blade 2 is provided so as to be retractable from the hilt 1, and the blade 2 is fixed to the hilt 1 between the hilt 1 and the blade 2 when the blade 2 is extended and retracted. The locking portions 9, 10, 16, and both locking portions 9, 10, 16
The handle 1 is provided with a plate spring 15 that holds the blade in a locked state by elasticity, and when the blade 2 is moved in and out of the handle 1, the locking part 16 on the handle 1 side resists the elasticity of the plate spring 15. A blade retractable cutlery equipped with an operating part 17 that can be operated by hand, characterized in that the locking part 16 on the handle 1 side, the leaf spring 15, and the operating part 17 are integrally molded from plastic to form one operating member 11. A knife with a retractable blade.