KR20080000489A - Torque adapter for socket wrench - Google Patents

Abstract

According to the present invention, the tightening operation can be performed by integral torque without applying more torque than necessary at the time of tightening, while at the time of relaxation, a relatively high torque is obtained to loosen the bolts and the generation of high torque at a specific point. It is an object of the present invention to provide a torque adapter for a durable socket wrench.

On one end face 1 ″ corresponding to the one end face 1 ′ of the adapter body 1 provided with a driving hole 2 with which the protruding terminal of the operation handle is engaged with one end face 1 ′, The apparatus chamber 8 which makes another end surface 1 "an open end is provided. The drive shaft 5 in which the pyramidal projection 9 enters into the pyramidal concave portion 8a at the inner end is inserted into the apparatus chamber 8, and the pyramidal projection 9 and the pyramidal concave portion ( The roller pin 12 is interposed between 8a). In addition, a spring 15 pressurized by the roller pin 12 is inserted into the straight portion 8c of the apparatus chamber 8 adjacent to the pyramidal recess 8a, and the spring 15 A hydraulic body 10 is attached to the open end. An engaging projecting terminal 4 of the socket for bolt 7 is provided at the tip of the drive shaft 5 protruding from the apparatus chamber 8 via the hydraulic body 10. In addition, the roller pin 12 is coupled to the inclined groove 11 provided in the pyramidal recessed portion 8a, while the inclined section in which the roller pin 12 enters and exits the outer circumferential surface of the pyramidal projection 9. The connection part 13 is provided, and this inclined notch part is comprised by the inclined surface 13a by the side of a bolt loosening direction, and the inclined surface 13b by the side of a bolt fastening direction, and both inclined surfaces 13a and 13b are the inclined surfaces of a relaxed direction side ( The depth width of the fastening direction side inclined surface 13a is crossed at an angle wider than the depth width of 13a).

Description

Torque adapter for socket wrench {TORQUE ADAPTER FOR SOCKET WRENCH}

1 is a longitudinal cross-sectional view.

2 is a partial longitudinal sectional view in use;

3 is a plan view showing a relationship between a pyramidal pyramid-shaped projection and a roller pin during use;

4 is an enlarged plan view illustrating a relationship between a pyramidal pyramid and a roller pin;

5 is a longitudinal sectional view of the adapter body;

6 is a bottom view of the adapter body;

7 is a front view of the drive shaft.

8 is a plan view of the drive shaft;

<Explanation of symbols for the main parts of the drawings>

1: adapter body

2: driving hole

4: engagement protrusion terminal

5: drive shaft

8: equipment room

8a: pyramidal recess

9: pyramidal protrusion

10: hydraulic body

11: inclined groove

12: roller pin

13: inclined notch

15: spring

BACKGROUND OF THE INVENTION Field of the Invention The present invention generally relates to a socket adapter for socket wrenches used between a socket fitted to a bolt head or a nut and an operation handle for rotating the socket. ·

Torque adapters for socket wrenches are well known, but for example, one end face is provided on the other end face corresponding to the one end face of the adapter body provided with a driving hole for engaging the protruding terminal (drive) of the operation handle on one end face. A device chamber having an open end is provided, and a drive shaft provided with a pyramidal projection formed in the pyramidal concave portion coupled to the pyramidal concave portion at the inner end of the apparatus chamber is inserted and inserted between the pyramidal concave portion and the pyramidal projection. While a roller pin is interposed, a return spring pressurized by the roller pin is accommodated in a straight portion of the storage chamber adjacent to the pyramidal recess, and the hydraulic body of the return spring is opened. Engagement projecting end of the socket for bolt or nut to the end of the drive shaft which is attached to the end and protrudes from the storage chamber through the hydraulic body. There is a self-installed structure (for example, patent document 1).

[Patent Document 1] Patent Publication No. 2001-239468

In the conventional structure of the document material, the pyramidal concave portion provided on the adapter main body side has a hexagonal pyramid shape, the roller pin is pressed on the flat inclined surface, and high torque by the drive shaft is expected, Through the socket, for example, it is not applied to the bolt head or the nut, but the position where the highest torque is generated becomes the center (closest to the axis) of the hexagonal flat face (taper face), and the high torque Since it was always concentrated at this point, wear progressed and torque down.

The present invention has been devised for the purpose of providing a durable socket wrench torque adapter by preventing the progress of wear as much as possible in view of the drawbacks of the conventional torque adapter.

An apparatus chamber having this other end face as an open end is provided on the other end face corresponding to the one end face of the adapter main body provided with a driving hole for engaging the protruding terminal of the operation handle on one end face, The drive shaft of the pyramidal projection which enters the pyramidal concave portion at the end is inserted and inserted, and a roller pin is interposed between the pyramidal projection and the pyramidal concave portion, while adjacent to the pyramidal concave portion, A spring pressurized by the roller pin is inserted into the straight portion, and the hydraulic element of the spring is attached to the open end, and the bolt socket is engaged with the tip of the drive shaft protruding from the device chamber through the hydraulic element. In a socket adapter torque adapter, in which a protruding terminal is provided, at the same interval between the truncated truncated pyramidal cones The roller pin is coupled to the inclined groove provided, while the inclined cutouts in which the roller pins enter and exit at the same time are installed on the outer circumferential surface of the truncated pyramidal pyramid-shaped protrusion at equal intervals. The bolt is formed by forming the cutout portion in the bolt loosening direction inclined plane and the bolt fastening direction inclined plane and adding the point where both inclined surfaces intersect at an angle where the depth width of the fastening direction inclined plane becomes wider than the depth width of the inclined plane in the loosening direction side. It is possible to provide a torque adapter suitable for bolt loosening that copes further with time variations such as oxidation on the bolt side so that a higher torque can be obtained when used in the loosening direction than the tightening of.

Figure 1 shows an embodiment of a torque adapter for a socket wrench according to the invention, Figure 1 is a longitudinal cross-sectional view, Figure 2 is a partial longitudinal section in use, Figure 3 shows the relationship between the pyramidal projection and roller pins in use 4 is an enlarged plan view showing the relationship between the pyramidal projection and the roller pin, FIG. 5 is a longitudinal sectional view of the adapter body, FIG. 6 is a bottom view of the adapter body, FIG. 7 is a front view of the drive shaft, and FIG. 8 is a Top view.

The torque adapter (A) for socket wrench according to the present invention is an engagement protruding terminal (4) provided at the distal end of the operation handle (3) in a driving polygonal hole (2) provided at one end surface (1 ') of the adapter body (1). ) Is coupled to the tip of the drive shaft 5 inserted and inserted into the adapter body 1, which projects from the other end surface 1 ″ corresponding to the one end surface 1 ′ of the adapter body 1. The drive protruding terminal 6 installed in the socket 7 is coupled to the socket 7 so as to be interposed between the operation handle 3 and the socket 7, and to the drive shaft 5 which rotates by rotating the operation handle 3. By rotating the socket 7 to tighten the bolt or nut, it is used to relax.

As described above, the adapter main body 1 is provided with the driving polygonal hole 2 in one end face 1 ′, and the device chamber 8 having the other end face 1 ″ as an open end. The apparatus chamber 8 is constituted by a linear portion 8c interposed between a truncated pyramidal pyramidal concave portion 8a on the inner end side and a screw portion 8b on the open end side. ), The truncated truncated pyramidal pyramidal projection 9 is coupled to the pyramidal concave portion 8a, and the drive shaft 5 is screwed onto the screw portion 8b to close the chamber 8. The adapter A is assembled by fitting the adapter main body 1 and the drive shaft 5 with each other so as to be inserted through the hydraulic body 10.

Inclined grooves communicating with the straight portion 8c of the chamber 8 in three sides with equal intervals in the circumferential direction of the inclined inner circumferential surface of the truncated pyramidal cone-shaped recess 8a of the chamber 8. (11) is provided, and the roller pin 12 is assembled to this inclined groove 11 so that rotational movement and up-and-down movement are possible.

The roller pin 12 to the inclined groove 11 are formed on the circumferential surface of the tapered (inclined type) of the truncated pyramidal pyramidal projection 9 coupled to the pyramidal recess 8a through the roller pin 12. The slanted cutout portion 13 is provided in three directions with equal intervals in the circumferential direction in correspondence with the cross section), and the half side of the roller pin 12 that partially protrudes from the inclined groove 11 along the axis line. It is coupled so as to be separated.

The inclined cutout part 13 consists of a pair of inclined surfaces 13a and 13b, ie, the inclined surface 13a on the bolt loosening direction side and the inclined surface 13b on the bolt fastening direction side, and both inclined surfaces 13a and 13b are in the relaxed direction The inclined cutout portion 13 is formed in relation to the angle at which the depth width of the fastening direction side inclined surface 13b is wider than the depth width of the side inclined surface 13a, and therefore is coupled to the inclined cutout portion 13. The separation from the inclined cutout portion 13 of the roller pin 12 is such that the torque at the tightening direction side inclined surface 13b side is more sufficient than the relaxed direction side inclined surface 13a side.

In addition, the drive shaft (5) is adjacent to the pyramidal projection (9) to assemble the hydraulic ring 14, the coil so as to wind the drive shaft (5) between the hydraulic ring 14 and the hydraulic body (10). A spring (although there is no problem even if it is a leaf spring) 15 is disposed and installed in the apparatus chamber 8.

In addition, at the distal end of the drive shaft 5 protruding from the apparatus chamber 8 through the hydraulic body 10, the drive protruding terminal 6 which engages (engages with) the socket 7 is provided.

Then, the socket 7 coupled and assembled to the drive protruding terminal 6 is combined with, for example, a bolt (head), and the engaging protruding terminal of the operating handle 3 (wrench) in the polygonal hole 2 for driving. When the operating handle 3 is rotated by engaging the 4, the adapter main body 1 which rotates along the operating handle 3 (engagement projecting terminal 4) when the direction of the rotational movement is the fastening direction of the bolt. The roller pin 12 (coupled to the inclined groove 11) on the side of the) side presses the inclined surface 13b on the fastening direction side of the inclined cutout portion 13 to rotate the drive shaft 5 to rotate the drive protruding terminal 6. Through this, the socket 7 is rotated in the fastening direction to perform the bolt fastening operation.

When a torque of a predetermined magnitude or more is applied through the operation handle during the bolting operation, the roller pins 12 are simultaneously released from the inclined cutout portion 13 on the inclined surface 13b side and the outer peripheral surface of the pyramidal projection 9 9 '), high torque is generated, and the generation of a torque of a certain magnitude or more is regulated, and the other (next stage) inclined cutout portion is continued by the action of the coil spring 15 by continuing the rotary motion operation. (13) at the same time, it is possible to prevent the application of more torque than necessary to the bolt through the drive projecting terminal 6 or the socket 7 by the repetition of this operation can be prevented have.

In addition, when the rotational movement direction is the relaxation direction of the bolt (not only in the case of a nut), the roller pin 12 presses the inclined surface 13a on the relaxed direction, and the shape relative to the other inclined surface 13b. As a result, a higher torque is applied to the bolts than when the inclined surface 13b is pressed, and the bolts are loosened at a high torque to cope with the rust of the bolts. 12) is simultaneously released from the inclined cutout portion on the inclined surface 13a and becomes the maximum torque value while moving on the outer circumferential surface 9 'of the pyramidal projection 9.

In addition, when the roller pin 12 is set at an angle from which the inclined surface 13b cannot be separated from the inclined cutout portion 13, the adapter is destroyed depending on the use, so that the angular relationship between the inclined surfaces 13a and 13b is appropriate. Should be considered.

The roller pins 12 (inclined notch 13 and inclined grooves 11) are arranged on three sides with equal intervals in the circumferential direction in the embodiment. However, unlike the embodiments, a plurality of roller pins 12 may be provided. It should be arranged at equal intervals in the direction.

According to the present invention, when the rotational motion in the bolt fastening direction, applying a torque of more than necessary to the bolt, the roller pin is away from the inclined notch, so that the bolt pin operation can always be performed with a constant torque, of course, While in contact with the tapered surface (outer surface) of the truncated truncated pyramidal projection, a high torque can be obtained, i.e. the maximum torque value can be expected during the movement on the outer surface of the truncated pyramidal projection of the roller pin at a specific point (linear It is possible to provide a torque adapter for a durable socket wrench which does not concentrate high generation and prevents wear caused by concentration.

Claims (2)

An apparatus chamber having this other end face as an open end is provided on the other end face corresponding to the one end face of the adapter main body provided with a driving hole for engaging the protruding terminal of the operation handle on one end face, and inside the apparatus room. A drive shaft with a protruding pyramidal projection that enters the pyramidal concave portion at the end is inserted and inserted therein, and a roller pin is interposed between the pyramidal projection and the pyramidal concave portion, while the straight line of the apparatus chamber adjacent to the pyramidal concave portion is inserted. A spring pressurized by the roller pin is inserted into the portion, and a hydraulic body of the spring is attached to the open end, and the tip of the drive shaft protrudes from the apparatus chamber through the hydraulic body. In a torque adapter for a socket wrench, in which an engaging protruding terminal of a socket for a bolt is installed, The roller pins are coupled to the inclined grooves provided at equal intervals in the conical conical portion of the truncated cone shape, while the inclined cutout portions at which the roller pins simultaneously enter and exit the outer circumferential surface of the truncated truncated pyramidal cone shaped portion Torque adapter for socket wrench. The inclined cutout portion is formed of a bolt loosening direction side inclined surface and a bolt fastening direction side inclined surface, so that both inclined surfaces have a depth width of the fastening direction side inclined surface wider than a depth width of the inclined surface on the loosening direction side. Torque adapter for socket wrenches crossed at an angle.

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