JP2009101461A - Socket for tool - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a socket for a tool capable of attaining high usability and long service life. <P>SOLUTION: The socket 11 for a tool includes a socket body 4 having an inner socket 1 on one edge, a driver bit insert port 2 on the other edge respectively, and a spring exterior portion 3 between the inner socket 1 and the driver bit insert port 2, a socket outer sleeve 7 having an outer socket 5 on one edge and a spring housing portion 6 on the other edge, an outer sleeve supporting spring 8 which includes a coil compression spring, a bush 9, and a driver bit attaching/detaching device 10. The outer sleeve supporting spring 8 is housed in the area formed by the spring outer portion 3, the spring housing portion 6, and the bush 9 while the socket outer sleeve 7 is movably attached to an outer-periphery portion of the socket body 4 in an axial direction. The inner socket 1 stays stationary constantly in a state pressed in the inside of the outer socket 5, and the outer socket 5 is reversed when an external force is applied to the outer socket 5 against the force of the outer sleeve supporting spring 8. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a socket for a tool, and more specifically, includes two sockets (an outer socket and an inner socket) having different diameters, and a driver bit for connecting to a tool (such as an electric tool, an air tool, and a hand tool). The present invention relates to a tool socket that is detachable.

  A tool socket having two sockets with different diameters is useful at a work site because two kinds of sockets can be switched by a simple operation, and various types have been disclosed.

  In Patent Document 1, in a socket for a tool having a socket (outer socket) on the front end side of the socket body and a mounting portion for a work tool on the rear end side, the socket body is movable in the axial direction in the outer socket. An invention relating to a tool socket provided with an inner socket provided is disclosed. Patent Documents 2 to 4 also disclose an invention related to a tool socket having a configuration in which the inner socket moves in the axial direction in the socket body, as in Patent Document 1.

  Patent Document 5 discloses an invention relating to a tool socket having an outer socket provided so as to be movable in the axial direction on the outer side of an inner cylinder having a recess for rotating a crushing portion provided at a tip portion of a foam tie. Is disclosed. Patent Document 6 discloses an invention relating to a tool socket having an outer socket provided on the outer side of the inner socket so as to be movable in the axial direction. Patent Document 7 discloses an invention relating to a tool socket having an outer socket that is provided on the outer side of the inner socket so as to be movable in the axial direction, and a housing portion for a compression spring formed of a notch on the inner side of the outer socket. Has been.

JP 2001-105333 A JP-A-8-141919 JP-A-56-137968 Japanese Utility Model Publication No. 48-74398 Japanese Utility Model Publication No. 5-93766 Japanese Utility Model Publication No. 7-20259 Japanese Patent No. 3947207

  As shown in Patent Documents 1 to 4, in the configuration in which the inner socket is provided in the outer socket so as to be movable in the axial direction, the inner socket is normally positioned at a position that matches the end position of the outer socket by the force of the compression spring. Or when the inner socket is used, it may be difficult to insert the nut.

  On the other hand, as shown in Patent Documents 5 to 7, a configuration in which an outer socket is provided so as to be movable in the axial direction outside the inner socket (in Patent Document 5, not a socket but a recess for turning a crushing part) In this case, the inner socket is pushed into the outer socket by the force of the compression spring, so when using the outer socket, it can be used as it is. There is a merit that it is easy to insert.

  However, the configurations disclosed in Patent Documents 5 and 6 have a problem that the connection portion with the tool cannot be replaced. In any of the configurations disclosed in Patent Documents 5 to 7, there is a problem that a force exceeding the elastic range is applied to the compression spring. In particular, in the configuration shown in Patent Document 5 (see FIG. 1 of Patent Document 5), the stop ring 37 is used to prevent the outer socket from falling off, but how the stop ring is fitted. It is not specified and it is unclear how to manufacture. Moreover, in the structure shown by patent document 6, since a compression spring is exposed outside, workability | operativity is bad. Furthermore, in the configuration shown in Patent Document 7, it is necessary to provide a housing portion made of a notch in the outer socket by machining, but productivity is poor and practical application is difficult.

  The present invention has been made to solve these problems of the prior art, and it is easy to insert a nut in both the inner socket and the outer socket, and a force exceeding the elastic range is not applied to the spring. An object of the present invention is to provide a tool socket which has a long tool life and can be exchanged at any time with a connection portion with a power tool.

  In order to solve the above problems, the present invention is summarized as a tool socket shown in the following (1) to (3).

(1) A socket body having an inner socket at one end and a driver bit insertion port at the other end, and having a spring exterior part between the inner socket and the driver bit insertion port, and an outer socket at one end A socket for a tool comprising a socket outer cylinder having a spring accommodating portion at the other end, an outer cylinder biasing spring constituted by a coil compression spring, a bush, and a driver bit attaching / detaching means,
In the space where the outer cylinder urging spring is formed by the spring exterior part, the spring accommodating part and the bush in a state where the socket outer cylinder is mounted on the outer peripheral part of the socket body so as to be movable in the axial direction. The inner socket is stationary with the inner socket pushed into the outer socket, and an external force is applied to the outer socket against the force of the outer cylinder biasing spring. A tool socket characterized in that the position of the outer socket is retracted.

  (2) The bush has a ring shape, an inner diameter thereof is larger than an outer diameter of the spring exterior portion, and an outer diameter thereof is smaller than an inner diameter of the spring accommodating portion, and the driver bit of the spring exterior portion The stopper is attached to the end on the insertion port side, and has a stopper portion that suppresses the spring from falling off on the small mouth surface, and a guide portion that guides the axial movement of the socket outer cylinder on the outer peripheral surface thereof. The tool socket according to (1) above, wherein

(3) The outer diameter of the bush is larger than the coil outer diameter of the outer cylinder biasing spring,
The spring accommodating portion includes a spring restraining portion provided at an end portion on the outer socket side, a spring housing portion having an inner diameter larger than a coil outer diameter of the outer cylinder biasing spring and smaller than the bush outer diameter, and a bush restraint. And consists of
The tool socket according to (2), wherein the spring storage portion has a sufficient length so that a force exceeding an elastic region is not applied to the outer cylinder biasing spring.

  According to the present invention, it is easy to insert the nut in both the inner socket and the outer socket, the spring is not loaded with a force exceeding the elastic range, and the connection with the electric tool is performed using the driver bit. The driver bit can be changed at any time. Therefore, the tool socket according to the present invention is easy to use and has a long tool life.

  Hereinafter, an example of an embodiment of the present invention will be described with reference to FIGS. 1A and 1B are diagrams showing an example of a tool socket according to the present invention, in which FIG. 1A is a perspective view, FIG. 1B is a plan view, and FIG. 1C is a cross-sectional view taken along line AA in FIG. . FIG. 2 is a sectional view showing an example of the usage state of the tool socket according to the present invention, where (a) shows the installation state of the driver bit, and (b) shows the position of each socket when using the outer socket. (C) shows the positional relationship of each socket when the inner socket is used. FIG. 3 is a cross-sectional view showing another example of the tool socket according to the present invention. The upper half of the figure shows a cross-sectional view of the socket outer cylinder, the bush and the detachable means outer cylinder, and the lower half shows a sphere and Sectional drawing of parts other than a driver bit is shown. Moreover, FIG. 4 is a figure which shows the state which attached the socket for tools which concerns on this invention to the electric tool.

  As shown in FIG. 1, the tool socket 11 according to the present invention includes a socket body 4, a socket outer cylinder 7, an outer cylinder biasing spring 8, a bush 9, and a driver bit attaching / detaching means 10. The socket body 4 is provided with an inner socket 1 at one end and a driver bit insertion port 2 at the other end, and a spring exterior 3 is provided between the inner socket 1 and the driver bit insertion port 2. . Further, the socket outer cylinder 7 is provided with an outer socket 5 at one end and a spring accommodating portion 6 at the other end. The outer cylinder biasing spring 8 is constituted by a coiled compression spring.

  In the tool socket 11 of the present invention, a socket outer cylinder 5 is attached to the outer peripheral portion of the socket body 4 so as to be movable in the axial direction. In this state, the outer cylinder biasing spring 8 is accommodated in a space formed by the spring exterior portion 3, the spring accommodating portion 6, and the bush 9. Since the tool socket 11 of the present invention has such a configuration, the inner socket 1 is normally pushed into the outer socket 5, that is, the outer socket 5 is in relation to the inner socket 1. It stands still in a protruding state.

  As shown in FIGS. 1 and 2, the driver bit attaching / detaching means 10 includes, for example, a through hole 13 and an open ring groove 19 provided in the vicinity of the driver bit insertion port 2, a sphere 14 inserted into the through hole 13, and It has an attaching / detaching means outer cylinder 15 and an open ring 16 accommodated in an open ring groove 19. The attaching / detaching means outer cylinder 15 is provided with a spherical body accommodating recess 17 for accommodating a part of the spherical body 14 and an open ring accommodating concave part 18 for accommodating a part of the open ring 16. The open ring 16 is made of an elastic body such as spring steel, and the inner diameter thereof is set larger than the outer diameter of the bottom of the open ring groove 19, and a part of the open ring 16 is open, so that the radius can be varied. ing.

  The inner diameter of the open ring receiving recess 18 is set so as to increase as it approaches the end on the inner socket side (left side in the drawing) and the end on the driver bit insertion port 2 side (right side in the drawing) and decreases in the center portion. Yes. For this reason, the open ring 16 is stable when the ring is open at the left end portion and the right end portion of the open ring receiving recess 18, but the radius is narrowed and unstable at the center of the open ring receiving recess 18. It becomes.

  As shown in FIG. 2A, by moving the attaching / detaching means outer cylinder 15 relatively in the right direction in the drawing, the sphere 14 is received in the sphere receiving recess 17 and the driver bit 12 is inserted into the driver bit insertion port 2. Can be inserted into. 2B, when the bit stopper groove 29 of the driver bit 12 is inserted to a position corresponding to the sphere 14, a part of the sphere 14 is fitted into the bit stopper groove 29. 12 is fixed to the socket body 4. Similarly, in a state in which the attaching / detaching means outer cylinder 15 is relatively moved in the right direction in the drawing, since the sphere 14 is received in the sphere receiving recess 17, the driver bit 12 can be pulled out. As a result, the driver bit 12 can be attached and detached.

  Here, in the tool socket 11 of the present invention, as shown in FIG. 2B, the inner socket 1 is normally pushed into the outer socket 5, that is, the outer socket 5 is attached to the inner socket 1. On the other hand, since it is still in a state of protruding, it is possible to perform tightening of a nut suitable for the outer socket 5 in this state. On the other hand, as shown in FIG. 2 (c), when an external force is applied to the outer socket 5 against the force of the outer cylinder biasing spring 8, the position of the outer socket 5 is retracted, and the inner socket 1 is moved to the outer socket 5. Since it protrudes from the socket 5, the nut suitable for the inner socket 1 can be tightened in this state.

  The attaching / detaching means for the driver bit 12 may be configured as shown in FIG. 3, for example. In this configuration, the attaching / detaching means outer cylinder 15 is always urged rightward in the figure by the attaching / detaching means urging spring 30. The attachment / detachment means outer cylinder 15 is moved relatively to the left in the drawing against the force of the attachment / detachment means urging spring 30, and the driver bit 12 is inserted into the driver bit insertion port 2 in a state where the sphere 14 is stored in the sphere receiving recess 17. The driver bit 12 can be attached and detached. The attachment / detachment means restraining ring 31 shown in FIG. 3 is for preventing the attachment / detachment means outer cylinder 15 from falling off.

  The bush 9 has a ring shape, and an inner diameter thereof is larger than an outer diameter of the spring exterior portion 3, and an outer diameter thereof is smaller than an inner diameter of the spring accommodating portion 6. It is desirable to use what is attached to the end of the side. The bushing prevention ring 20 prevents the bushing 9 from falling off. Since the end portion of the outer cylinder biasing spring 8 is in contact with the small-mouth surface (stopper portion 21) of the bush 9, it does not fall off. Moreover, since the inner surface of the socket outer cylinder 7 contacts the outer peripheral surface (guide part 22) of the bush 9, it plays a role of guiding the movement of the socket outer cylinder 7 in the axial direction.

  In particular, the bush 9 has an outer diameter larger than the coil outer diameter of the outer cylinder biasing spring 8, and the spring accommodating portion 6 includes a spring restraining portion 23 provided at the outer socket 5 side end portion and a spring accommodating portion 24. And what has the bush suppression part 25 is desirable. Since the inner diameter of the spring storage portion 24 is larger than the outer diameter of the coil of the outer cylinder biasing spring 8 and smaller than the outer diameter of the bush 9, the outer cylinder biasing spring 8 can be accommodated but the bush 9 cannot be accommodated. ing. With such a configuration, since the socket outer cylinder 7 can only be retracted to a position where the bush restraining portion 25 contacts the bush 9, the outer cylinder biasing spring 8 is housed in the spring housing portion 23. No force exceeding the range is applied.

  The socket body 4 is hollow and preferably has a length sufficient to store a long protruding bolt.

  As shown in FIG. 4, the tool socket 11 of the present invention is connected to the tool 26 in a state where the driver bit 12 is inserted into the driver bit attaching / detaching means 10 of the socket body 4, and the nut 27 is connected to the inner socket 1 or the outer socket. It can be fitted into the socket 5 and the nut 27 can be loosened or tightened.

  In the tool socket 11 of the present invention, the socket outer cylinder 7 is attached to the socket main body 4 by covering the socket outer cylinder 7 from the right side of the socket main body 4 in FIG. This can be done by inserting the bush 9 together with the outer cylinder biasing spring 8 into the space formed by the spring accommodating portion 6 and fitting the bush restraining ring 20 into the bush restraining ring groove 28. In addition, the driver bit attaching / detaching means 10 is attached to the socket body 4 with the sphere 14 inserted into the through hole 13 and the opening ring 16 fitted in the opening ring groove 19 with the attaching / detaching means outer cylinder 15 in the right side of the figure. This can be done by exterior packaging from left to right.

  According to the present invention, it is easy to insert the nut in both the inner socket and the outer socket, the spring is not loaded with a force exceeding the elastic range, and the connection with the electric tool is performed using the driver bit. The driver bit can be changed at any time. Therefore, the tool socket according to the present invention is easy to use and has a long tool life.

The figure which shows the example of the socket for tools which concerns on this invention (a) Perspective view (b) Top view (c) AA sectional drawing of (b) The figure which shows the example of the use condition of the tool socket which concerns on this invention (a) The installation condition of a driver bit (b) The positional relationship of each socket when using an outer socket (c) Each socket when using an inner socket Positional relationship The figure which shows the other example of the socket for tools which concerns on this invention The figure which shows the state which attached the socket for tools which concerns on this invention to the electric tool

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Inner socket 2 Driver bit insertion port 3 Spring exterior part 4 Socket main body 5 Outer socket 6 Spring accommodating part 7 Socket outer cylinder 8 Outer cylinder biasing spring 9 Bush 10 Driver bit attaching / detaching means 11 Tool socket 12 Driver bit of the present invention 13 Through hole 14 Sphere (ball)
15 Detachment means outer cylinder 16 Open ring 17 Sphere receiving recess 18 Open ring receiving recess 19 Open ring groove 20 Bush suppression ring 21 Stopper portion 22 Guide portion 23 Spring suppression portion 24 Spring storage portion 25 Bush suppression portion 26 Tool 27 Nut 28 Bush suppression Ring groove 29 Bit stopper groove 30 Detachment means biasing spring 31 Detachment means restraining ring

Claims (3)

An inner socket at one end, a driver bit insertion port at the other end, a socket body having a spring exterior between the inner socket and the driver bit insertion port, an outer socket at one end, and the other end A socket for a tool comprising a socket outer cylinder having a spring accommodating portion, an outer cylinder biasing spring constituted by a coil compression spring, a bush, and a driver bit attaching / detaching means,
In the space where the outer cylinder urging spring is formed by the spring exterior part, the spring accommodating part and the bush in a state where the socket outer cylinder is mounted on the outer peripheral part of the socket body so as to be movable in the axial direction. The inner socket is stationary with the inner socket pushed into the outer socket, and an external force is applied to the outer socket against the force of the outer cylinder biasing spring. A tool socket characterized in that the position of the outer socket is retracted.   The bush has a ring shape, and an inner diameter thereof is larger than an outer diameter of the spring exterior portion, and an outer diameter thereof is smaller than an inner diameter of the spring accommodating portion, and the driver bit insertion port of the spring exterior portion A stopper portion for preventing the spring from falling off, and an outer peripheral surface having a guide portion for guiding the movement of the socket outer cylinder in the axial direction. The tool socket according to claim 1. The outer diameter of the bush is larger than the coil outer diameter of the outer cylinder biasing spring;
The spring accommodating portion includes a spring restraining portion provided at an end portion on the outer socket side, a spring housing portion having an inner diameter larger than a coil outer diameter of the outer cylinder biasing spring and smaller than the bush outer diameter, and a bush restraint. And consists of
3. The tool socket according to claim 2, wherein the spring storage portion has a sufficient length so that a force exceeding an elastic region is not applied to the outer cylinder biasing spring. 4.

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