JPH0529679U - Socket for socket trench - Google Patents

Abstract

(57) [Summary] [Purpose] Make sure that the bolt head fits inside the socket of the wrench. [Structure] A guide slope is provided at the socket box entrance,
As the socket rotates, each vertex of the bolt head is guided to the ridge of the box.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an improved wrench socket, and is particularly suitable for a socket of a power wrench.

[0002]

[Prior Art]

 If you want to improve productivity in the bolt tightening process, that is, if you want to tighten a larger number of bolts within a certain period of time, finally use a power wrench that operates with a pneumatic actuator or electric motor. There is no choice but to tighten the bolts. However, when trying to tighten the bolt with the head of the bolt not completely seated in the socket of the power wrench, the socket sometimes slipped and the ridge of the head of the bolt was crushed. For this reason, bolt tightening with a power wrench requires reliable insertion of the bolt head into the socket, but this work was surprisingly troublesome.

[0003]

[Problems to be solved by the device]

 Therefore, it is a technical object of the present invention to provide a socket that does not spin and crush the bolt head.

[0004]

[Means for Solving the Problems]

 In order to solve the above problems, the means adopted by the present inventor is a box having a polygonal columnar cavity into which a head portion of a bolt can be fitted in a socket, and a cavity continuously provided at an inlet portion of the box. When the socket is rotated with respect to the bolt while pressing the polygonal vertices of the bolt head against each guide slope on the wall surface, each vertex slides on the guide slope and the bolt becomes the socket. It is a means of providing a point guide that rotates relative to each other and that each vertex comes to a position where it can be fitted into the ridge of the box wall. The box is for securely gripping and rotating the bolt, and the point guide is for securely storing the head of the bolt in the box to prevent idling.

[0005]

【Example】

 Hereinafter, the present invention will be described based on embodiments.

In order to fasten a right-handed screw bolt having a regular hexagonal columnar head, a regular hexagonal columnar cavity is provided in the socket 1 to form a box B. Subsequently, the periphery of the entrance of the box B is cut outward to form a guide slope to form a point guide.

The point guide is constructed as follows. First, let R be the point where the extension line of the ridge of the hollow box B having a regular hexagonal shape and the front surface of the socket 1 intersect.₁・ R₂······ and regular hexagon R₁R₂… R₆Larger hexagonal Q with the same center O₁Q₂… Q₆Take. At this time, regular hexagon Q₁Q₂… Q₆When viewed from the front of the socket 1, each vertex of is a regular hexagon R₁R₂… R₆OR that connects each vertex and the center O of₁, OR₂Slightly counterclockwise from the extension of ... Then, on the ridge of box B, 6 points S₁・ S₂･ ･ ･ Is appropriately selected to form a regular hexagonal R₁R₂… R₆Six points T, one on each side of₁・ T₂・ Take appropriate ... And six triangles Q₁S₁T₆, Q₂S ₂ T₁, ... and 6 triangles Q₁S₁T₁, Q₂S₂T₂If you carve out…, 6 triangles Q₁S₁T₆, Q₂S₂T₁The point guide can be obtained while forming the guide slope.

Now, the socket 1 configured as described above is used as a power wrench to actually perform bolt tightening. First, when the socket 1 is approached to the bolt while being rotated clockwise in advance, each apex of the head of the bolt comes into contact with the guide slope of the point guide wall surface of the socket 1. Next, when the socket 1 is rotated slightly clockwise while the bolt is still being pressed by the socket 1, each vertex of the bolt head continues to contact the guide slope, so that each vertex of the bolt enters deeper by the point guide. .. Finally, each apex of the bolt comes to the same position as the ridge of the wall surface of the box B, and the head of the bolt is completely set inside the box B of the socket 1. At this time, the bolt heads are kept in contact with the guide wall surfaces at all times, and the bolts enter the box B without difficulty, so the bolt heads do not collapse.

Although the present embodiment is configured as described above, the present invention is not limited to the above-described embodiment, and is configured for right screw type bolt removal and left screw type bolt tightening, It can also be used with socket wrenches other than power wrenches. Further, in the above embodiment, the point guides are provided on each of the six sides of the regular hexagonal box wall, but the point guides may be provided at a total of three places for each jump. In this case, it is necessary to process the side surface where the point guide is not provided so that the apex of the bolt head does not contact.

[0010]

[Effect of the device]

 As described above, the socket of the present invention is provided with the point guide at the entrance of the box, so that even if the socket is pressed against the bolt while rotating, the guide guides the head of the bolt into the box while following the rotation. Therefore, the bolt head will not be crushed. Therefore, for example, a large number of bolts can be continuously tightened without stopping the operation of the wrench even when the same torque is constantly applied to the socket, and the efficiency of the bolt tightening work is greatly improved. Therefore, the socket of the present invention has high industrial utility value.

[Brief description of drawings]

FIG. 1 is a perspective view showing a usage state of an embodiment.

FIG. 2 is a front view of the embodiment.

FIG. 3 is a partial cross-sectional perspective view of the embodiment.

[Explanation of symbols]

 1 socket B box

Claims (2)

[Scope of utility model registration request] 1. A socket for holding a bolt head for fastening or releasing a bolt having a polygonal head, the box having a polygonal columnar cavity into which the head of the bolt can be fitted, and It is a cavity that is connected to the inlet, and a guide slope is provided on the wall surface.When the socket is rotated with respect to the bolt while pressing the polygonal apex of the bolt head against each guide slope, A socket characterized in that the apex slides on a guide slope, the bolt rotates relative to the socket, and each apex comes to a position where it can be fitted into the ridge of the box wall. Wrench socket. 2. The socket for a socket wrench according to claim 1, wherein the relative rotation direction of the bolt with respect to the socket is opposite to the direction in which the socket should be rotated.