JPH0222227Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Field of Application) The present invention relates to a hammer whose striking portion is made of wood or plastic material to improve durability.

(Prior Art) Conventionally, hammers whose striking portions are made of wood or plastic have been generally used to strike mechanical parts for assembly or disassembly of machines, or to strike painted products. ing. A hammer whose striking part is made of wood or plastic material has appropriate softness, does not damage mechanical parts, etc., and has low striking noise.
Furthermore, it has the advantage that there is no risk of sparks being generated when striking, as with a hammer whose striking part is made of a metal material.

However, in a hammer whose striking portion is made of wood, the striking surface is likely to be splintered or chipped if the hammer is struck strongly. Furthermore, there is a risk that the striking part of the hammer may split along the grain of the wood, causing fragments to fly around and injure the worker. Furthermore, in the case of hammers whose striking parts are made of plastic, there is a risk that the striking part may split and fragments may injure surrounding workers.

Therefore, in the past, a metal ring was fitted around the outer periphery of the striking part made of wood or plastic near the striking surface to prevent the striking part from tearing and to prevent the torn pieces from flying around. There are things to prevent.

(Problem to be solved by the invention) In the above-mentioned conventional hammer in which a metal ring is fitted around the outer periphery of the striking part near the striking surface of the striking part made of wood or plastic, the metal ring is attached to the striking part. Initially it was good as it was firmly attached to the
By repeatedly hitting the metal ring, the fitting of the metal ring to the hitting portion tends to loosen gradually. As a result, the metal ring may eventually fall off from the striking part, potentially injuring the worker when the metal ring falls off, and there is also the problem that the hammer is not sufficiently durable. It was hot.

The purpose of the present invention was to solve the above-mentioned problems of this type of hammer, and by attaching an elastic ring around the outer periphery of the striking part near the striking surface, the striking part is prevented from tearing. It is an object of the present invention to provide a hammer which prevents the problem and provides sufficient durability.

(Means for Solving the Problem) In order to achieve the above object, the hammer of the present invention has a striking part formed of wood or plastic, and the striking part has elasticity on the outer periphery near the striking surface. Surrounding the elastic ring,
The striking portion is configured to be compressed by the elasticity of the elastic ring.

(Function) An elastic ring with elasticity is attached to the outer periphery of the striking part near the striking surface, and the striking part is compressed by the elasticity of this elastic ring, so when struck with a hammer, the striking part becomes soft. However, the elastic deformation of the striking portion is appropriately suppressed by the elasticity of the elastic ring, and the impact force upon striking can be absorbed by the elastic ring. Therefore, the impact received by the striking part can be reduced, damage to the striking part can be prevented, and durability can be improved.

(Description of Embodiments) Hereinafter, embodiments of the present invention will be described with reference to FIGS. 1 and 2. FIG. 1 is an external perspective view of one embodiment of the hammer of the present invention, and FIG.
It is an AA sectional view of the figure.

In FIGS. 1 and 2, the hammer 1 is
A cylindrical striking part 2 is formed of wood, and a handle 3 is attached to a hole bored in the center of the striking part 2. Furthermore, an elastic ring 5 having elasticity is attached around the outer periphery of the striking portion 2 near the striking surface 4. As shown in FIG. 2, the striking portion 2 is compressed by the elastic force F of the elastic ring 5. Note that in order to compress the striking part 2 with the elasticity of the elastic ring 5, the inner diameter of the elastic ring 5 is previously formed smaller than the outer diameter of the striking part 2, and the elastic ring 5 is expanded against the elasticity. Alternatively, one end of an elastic member such as a band-shaped rubber member may be fixed to the outer periphery of the striking portion 2, and the elastic member may be stretched and wrapped around the striking portion 2 to cause the other end to be struck. It may be fixed to part 2.

In this configuration, when a mechanical component or the like is struck with the hammer 1, the striking part 2 is elastically deformed because it is soft, but the elastic deformation of the striking part 2 is appropriately suppressed by the elasticity of the elastic ring 5, and the striking part 2 is The impact force caused by this can be absorbed by the elastic ring 5. For this reason, the impact received by the striking part 2 is reduced, damage to the striking part 2 is prevented, and durability can be improved. Moreover, even if the striking part 2 is torn, its fragments will not scatter and injure the operator. According to the applicant's experiments,
The hammer 1 in which the elastic ring 5 is attached around the striking part 2 made of oak wood with a diameter of 57 mm is compared to a similar conventional hammer without the elastic ring 5.
We were able to dramatically improve its durability by approximately 10 times.

In addition, compared to the conventional hammer in which a metal ring is fitted to the striking part 2, the hammer 1 of the present invention
is excellent in absorbing impact force when struck, reducing the burden on the worker and improving work efficiency. Furthermore, like a conventional hammer,
There is no risk that the metal ring will fall off from the striking part 2.

In the above embodiments, the hammer whose striking part is made of wood has been described, but the present invention is not limited thereto, and it goes without saying that the present invention can be applied to a hammer whose striking part is made of plastic material. Furthermore, it is clear that the present invention is not limited to small-sized hammers, and may be applied to large-sized hammers such as kakeya.

(Effect of the invention) As explained above, according to the hammer according to the invention, an elastic ring having elasticity is attached around the outer periphery of the striking part near the striking surface, and the striking part is compressed by the elasticity of this elastic ring. Therefore, when struck with a hammer, the striking part is elastically deformed due to its softness, but the elastic deformation of the striking part is appropriately suppressed by the elasticity of the elastic ring. It can be absorbed by the ring, which has excellent effects such as preventing damage to the striking part and improving durability.

[Brief explanation of the drawing]

FIG. 1 is an external perspective view of an embodiment of the hammer of the present invention, and FIG. 2 is a cross-sectional view taken along line AA in FIG. 1: hammer, 2: striking part, 4: striking surface, 5:
elastic ring.

Claims (1)

[Scope of utility model registration request] A hammer in which a striking part is formed of wood or plastic material, wherein an elastic ring having elasticity is attached around the outer periphery of the striking part near the striking surface, and the striking part is compressed by the elasticity of the elastic ring. A hammer that is characterized by: