JPS58132467A - Wrench - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a ratchet type wrench.

Conventional ratchet wrenches generally use a lever to switch the ratchet teeth in order to switch the direction of rotation of the rotating box part from left to right. The lever was pressed in a direction perpendicular to the lever by the bullet. (Accordingly, the through hole for accommodating the ball and the bullet was also drilled in the direction perpendicular to the lever.) Known examples of this type are Aji, and in Japan, Utility Model Publication No. 47-24379;
There are U.S. Pat.
No. 523, No. 3008363, and French Patent No. 10
29033, etc.

However, with the conventional ratchet teeth of this type of structure, it will become impossible to use wrenches in various parts of automobiles and machinery, which will inevitably become smaller and more complex in the future. This is fully expected, and there is a strong desire in these industries to provide a wrench that is smaller and has better workability.

Therefore, the inventor of the present invention has already created several miniaturized special wrenches, but this time, in order to further meet the demands of the industry, the inventor has cleared away the preconceptions about the structure of the conventional ratchet wrench. Based on the viewpoint that we must think based on new ideas, we are trying to provide a ratchet type wrench with a completely new structure.

The structure and operation of the present invention will be explained with reference to the embodiments shown in the drawings.

(1) shows a two-day wrench, and the mechanism of the present invention is most effectively implemented in a two-day wrench.

(21 is a handle, and a circular opening (4) is formed in the head (3) of this handle. (5) is a cylindrical body fitted into this circular opening (4). A large number of semi-arc shaped grooves (6) are provided on the outer peripheral surface at small intervals. (7)... indicate the peaks between the grooves (6).

to be accomplished. (8) is a through hole (hereinafter referred to as a diagonal hole) formed diagonally from one side of the handle portion (21) toward the opening (4) of the head (3); ), a ball (9) is arranged in the direction of the opening (4), and a bullet (10) is provided for suppressing and supporting the ball (9) from the rear, and this bullet (10) is arranged in the diagonal hole (8). Fix with a stator (-) that closes the outer end of the (8') is the outlet of the diagonal hole (8), and the ball (9) comes to face this outlet.

Now, if you want to remove the object stuck in the square hole of the cylinder (5), hold the handle (2) and turn it, for example, to the left. As shown in , the cylindrical body (5) of the handle head (3) rotates to the right as shown by the arrow. At this time, the ball (9) that was pressing a part of the cylindrical body (5) is removed from the groove (6) that had been fitted up until then.
) from - to any concave groove (6) beyond some peaks (7).
) will be inserted again (see Figure 2 Prisoner → (B))
. This is because when the cylinder (5) rotates in the direction of the arrow shown in Figure 2, the surfaces of the peak (7) and groove (6) on the peripheral wall of the cylinder (5) move the contacting ball (9) diagonally downward. As a result, the ball contracts the bullet (10) and retreats, allowing the cylinder (5) to rotate freely.

On the other hand, when the handle (21 is rotated, for example, to the right, as shown in FIG. 3), the throat 11 head (3)
The cylindrical body (5) attempts to rotate to the left as shown by the arrow. However, at this time, the ball (9) fitted into the groove (6) of the cylinder (5) is pushed up from an oblique direction by the elastic force of the bullet (101). ) comes to prevent the rotation of the cylinder (5).

By the way, in order to use one wrench to rotate in either the left or right direction for attaching or detaching an object, the double-ended wrench shown in Figure 1 must have a cylindrical rotating section on both its left and right heads. are installed, and the rotating directions of the cylindrical rotating parts are opposite to each other.

In this way, the present invention provides a semi-arc shaped concave groove (6) and a crest (7) on one circumferential surface of the head of the nozzle (21) (the opening (4) of 31) at a small interval. A cylindrical body (5) formed in the above manner is fitted, and a through hole (8) is bored diagonally from one side of the handle toward the head opening (4), and this diagonal through hole (
8) A ball (9) that is pressed and supported by the bullet (10) is housed inside the cylinder, and this ball is directly inserted into the groove 16) of the cylinder to rotate the cylinder (5) in only one direction. Because this wrench is characterized by being designed to do this, the wrench's rotation mechanism that rotates in one direction to attach and detach objects must be installed inside the head of the handle. Therefore, since there is absolutely nothing that protrudes outside the head and is exposed, not only can the area around the head be made smaller, but it also makes it possible to avoid contact with the surroundings during use. Since the structure is simple, it is easy to manufacture and inexpensive, and it is also less likely to break down, has high durability, and has a simple structure. The wrench of the present invention, which has a smaller head, can be used to completely attach and detach screws even in mechanical structures, resulting in high work efficiency and an ideal wrench for workers. It is now possible to provide this service, and its effects are extremely large.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, FIG. 1 is a perspective view of a two-day wrench, FIG. FIG. 3 is a front sectional view when motion is blocked. Patent applicant: Ei Nakayama 2 Procedural amendment (voluntary) February 10, 1980 Director-General of the Patent Office Kazuo Wakasugi 1, Patent Application No. 1987-011588 2, Title of the invention: 3, Among those making the amendment: Eiji Yama 4, Agent 5, Specification to be amended (full text) (attached) Specification 1, Title of the invention Wrench 2, Claims (1) Head opening of the handle A cylindrical body having a plurality of semi-arc grooves and ridges formed at small intervals on one circumferential surface is fitted into the part, and the cylinder body is inserted in a diagonal direction from one side of the handle toward the head opening. A through hole is bored, a ball to be compressed and supported by a bullet is accommodated in the diagonal through hole, and the ball is fitted into the groove of the cylinder, so that the cylinder can rotate only in one direction. A wrench made like this. 12) Detailed description of the wrench O3 described in claim 1, which is installed so that the rotating directions of the cylinders are opposite to each other at the openings of the two opposite heads of the handle. The present invention relates to a ratchet type wrench. Conventional ratchet wrenches typically use a lever to switch the ratchet teeth in order to switch the direction of rotation of the rotating box part to the left or right. The lever was pressed in a direction perpendicular to the lever by the bullet. (Accordingly, the through hole for accommodating the ball and the bullet is also drilled in the direction perpendicular to the lever θ. Known examples of this type in Japan include Utility Model Publication No. 47-24379, Utility Model Publication No. 47-24380, -24381, U.S. Pat.
No. 3, No. 3008363, and French Patent No. 1029
There are issues such as No. 033. However, it is fully predicted that the conventional ratchet wrenches with this type of structure will no longer be able to be used in various parts of automobiles and machinery, which will continue to become smaller and more intricately designed. Therefore, there is a strong desire in these industries to provide smaller wrenches with better workability.Therefore, the present inventor has created several smaller special wrenches. However, in order to further meet the demands of the industry, this time we will take the perspective that we must think from a new perspective, erasing the existing preconceptions about the structure of ratchet teeth. Here, we intend to provide a ratchet type wrench with a completely new structure.The structure and operation of the present invention will be explained with reference to the embodiments shown in the drawings.(1) shows a double-ended wrench, and the mechanism of the present invention It is effective to use a double-ended wrench, but it is also possible to use a single-ended wrench. (2) is a handle, and the head (3) of this handle has a circular opening (4). (5) is a cylindrical body fitted into this circular opening (4), and a semi-circular groove (6) and a peak (7) are formed on the outer peripheral surface of this cylindrical body with a small distance between them. A large number of square holes such as hexagonal holes are formed in the inner part of the cylinder (5).(8) is the handle part (2).
) is a through hole (hereinafter referred to as a diagonal hole) formed diagonally from one side of the left and right sides of the head (31) toward the opening (4), and inside this diagonal hole (8) is the cylindrical body. The ball (
91 and a bullet Oa that suppresses and supports this ball (91 from the rear) is provided, and this bullet (1G is fixed with a stator Ol that closes the outer end of the diagonal hole (8). +S
+ is the outlet of the diagonal hole (8), and the ball (9) faces the outlet and comes into contact with the groove (6) and the peak (7) on the outer peripheral surface of the cylinder. Now, if you want to remove the object stuck in the square hole (5'1 part) of the cylinder (5), hold the handle (2) and turn it counterclockwise, for example, as shown in Fig. 2 ( As shown in A) and CB), the ball (9) that had been fitted into one of the grooves on the outer peripheral surface of the cylindrical body (5) and was pressing it has come off and the groove 16)
It will fit into any groove (6) beyond one or more peaks (7) from one of the grooves (see Figure 2 → (B)).
reference). When the handle (2) is rotated in the direction of the arrow shown in FIG.
) in such a way that each surface of the ball (9) that comes into contact with it presses diagonally downward, and each time the pole pushes the ball (9) diagonally downward.
0) will be retracted, so the handle (2) will be retracted.
) can freely rotate independently of the cylinder (5). On the other hand, when the handle (21) is held and rotated clockwise, for example, as shown in FIG. Bullet machine (10
) is pushed up diagonally by the elastic force of the ball (9), and the pressure of the ball (9) against the groove (6) fixes the barrel (5) to the handle (2). The wrench rotates 210 times in the power direction to install or remove bolts and nuts. In this way, the wrench operates the handle (2) continuously in either the left or right direction. It is used for attaching and detaching bolts or nuts in narrow spaces.In order to attach and detach objects with a single wrench, it is necessary to attach and detach bolts or nuts in both directions as shown in Figure 1. Like a wrench, cylindrical rotating parts may be installed in the head openings on the two opposite sides, and the cylindrical rotating parts may be manufactured so that the rotating directions are opposite to each other.Also, This double-ended wrench can be used from both the top and bottom directions.The present invention has a semi-arc shaped concave groove (6) on the nine circumferential surfaces of the opening (4) of the head (3) of the handle (2).・To Yamabe (
7) A cylindrical body (5) in which a large number of ``and'' are formed at small intervals.
into the head opening (4) from one side of the handle.
A through hole (8) is formed diagonally toward the cylinder, and a ball (9) to be compressed and supported by the bullet (10) is accommodated in the diagonal through hole (8). This wrench is characterized by being fitted into the groove (6) so that the cylindrical body (5) can only be rotated in one direction, so it is a wrench that can be held in place and rotated left and right to attach or detach an object. The rotation mechanism is all installed inside the head of the handle, and there is nothing that is exposed outside of the head, so the area around the head should be made smaller. This makes it possible to work without worrying about contact with the surroundings when using the wrench, increasing work efficiency, and its simple structure makes it easy to manufacture and cost-effective. The wrench of the present invention is inexpensive, highly durable, and less likely to break down, and has a smaller head for attaching and detaching screws in places with narrow and complicated mechanical fishing structures such as automobiles. This makes it possible to provide a wrench that is ideal for workers, and its effects are extremely large. 4. Brief description of the drawings The drawings show embodiments of the present invention. Fig. 1 is a perspective view of the two-day wrench, Fig. 2 (Fig. FIG.

Claims (2)

[Claims] (1) Fitting into the head opening of the handle a cylindrical body in which semi-arc shaped grooves and peaks are formed on one circumferential surface with a small distance between them,
A through hole is formed in a diagonal direction from one side of the handle toward the head opening, and a ball that is pressed and supported by a bullet is accommodated in the diagonal through hole, and the ball is inserted into the concave groove of the cylindrical body. Wrench 0 that is fitted into the cylindrical body and rotates the cylindrical body only in one direction. (2) A wrench in which the mechanism described in (1) above is installed in two head openings so that the rotating directions of the cylinders are opposite to each other.