JP4372037B2 - Socket exchange type wrench - Google Patents

Description

  The present invention relates to a hand tool used for fastening a bolt or nut by attaching a socket that fits a hexagon head of a bolt or nut to the tip of a lever operated by hand, and is generally called a socket wrench or a ratchet wrench. It relates to tools.

  Dimensions corresponding to the hexagonal heads of bolts and nuts to be tightened or loosened on the socket mounting shaft mounted via a ratchet that can change the rotation direction with a slide button etc. at the tip of a lever that is swung manually A tool called a socket wrench or a ratchet wrench that attaches and removes the bolts and nuts is widely used in machine assembly and repair shops. There are various types of bolts and nuts used in the machine, so this type of wrench has a large number of sockets with different sizes. Is usually designed to be housed in a single tool box.

  As shown in FIG. 4, a conventional socket of this type of wrench includes a mounting hole 5 that fits into a socket mounting shaft 9 provided at the tip of the lever 1 at one end of a short cylindrical member, and six at the other end. A box 4 having a cross-sectional shape in which squares are shifted by 30 degrees and overlapped is provided. The size of the box 4 varies depending on the size of bolts and nuts to be fastened, but the mounting holes 5 having the same dimensions are provided in the approximate socket dimensions, and the sockets having different dimensions are appropriately replaced and attached to the mounting shaft 9. Can be done.

  The socket mounting shaft 9 has a generally rectangular cross section and protrudes from the tip of the lever 1 to the side. The socket mounting shaft 9 is mounted by fitting a spring-biased ball with a recess provided in the socket mounting hole 5 or the like. The structure prevents the socket from falling off.

The socket box 4 has dimensions that match the hexagon heads of the bolts and nuts. For example, when four types of bolts and nuts having different dimensions are used in a machine to be assembled or repaired, the dimensions of the socket box 4 differ. The bolts and nuts are tightened and removed while replacing the sockets in a timely manner.
Japanese Utility Model Publication No. 2-7967 Japanese Utility Model Publication No. 6-66960.

  Although bolts and nuts having a very large number of dimensions are defined in JIS and the like, the dimensions of bolts and nuts used in specific machine parts are not so many. For example, in the repair of automobile interiors, most bolts and nuts can be fastened with about four types of sockets. Therefore, in this case, the four sockets are frequently replaced and the machine is disassembled and assembled. However, there are many situations in which the socket removed for replacement must be immediately reattached. It is very cumbersome and time consuming to carry out the work while keeping the tool in a predetermined position of the tool box. Therefore, it is necessary to place the removed socket close by, but the placed socket may touch the limbs and roll, or the place where it is placed may not be known, so it often takes time to find the socket. .

  The present invention eliminates the trouble of storing the socket in the tool box, taking it out of the tool box, and searching for the socket, in view of the above situation in the interior of the automobile or the undercarriage, engine room repair shop, etc. An object of the present invention is to provide a socket exchange type wrench that can work comfortably well.

  In the present invention, the length of the socket in the axial direction is made longer than that of the conventional one, and a box 4 that fits the bolt heads having different dimensions is provided at both ends, and the socket mounting portion 6 is fitted between the boxes at both ends. The above-mentioned problem is solved by providing the mounting hole 5 to be extended and increasing the protruding length of the socket mounting shaft 9a at the tip of the lever 12, or by providing the extension mounting shaft 2 for extending the socket mounting shaft 9. It is.

  More preferably, a socket holding shaft 14 projecting in the lever shaft direction is provided at the end of the lever 12 to be gripped by hand, and the socket holding shaft 14 is fitted into a socket mounting hole 5 similar to the socket mounting shaft 9. By providing the socket holding part 13, the said subject is solved better.

  A socket 3 provided with boxes 4 of bolt heads and nuts at both ends is attached to the lever 12 by attaching a mounting hole 5 penetrating between the boxes to the socket mounting shaft 9a of the lever 12. If two such double-headed sockets are used, four types of bolts and nuts can be fastened by replacing and reversing the sockets. If the removed socket is attached to the socket holding shaft 14 provided on the lever, the work can be performed with the two sockets, that is, the four sockets in the conventional structure attached to the lever 12. The bolts and nuts can be tightened and loosened without returning the socket to the tool box or placing it on the floor.

The socket exchange type wrench according to the invention of claim 1 of the present application is provided with a box 4 fitted to bolt heads of different dimensions at both ends in the axial direction, and a mounting hole 5 at the center in the axial direction so as to communicate the both boxes. and a plurality of socket 3, Ri Do from the set of the one of the through by the mounting holes in one lever mounted the length of the socket mounting shaft 9a or extended mounting shaft 2 to be fitted 1,12 of the box , which is the plurality of socket said socket switched wrench that have a mounting hole 5 of the same size to fit the socket mounting portion 6 of the socket mounting shaft 2.

The invention of claim 2 of the present application is the socket exchange type wrench provided with the means of claim 1, and has the same structure as the socket mounting portion 6 of the socket mounting shaft 9 a at the axial end on the side gripped by the hand of the lever 12. The socket holding shaft 14 is provided with the socket holding portion 13, and the socket holding portion 13 is provided with the axial direction thereof being the same as the axial direction of the lever 12 .

In addition, the socket replacement type wrench attachment according to the invention of claim 3 of the present application is provided with a box 4 that fits bolt heads of different dimensions at both ends in the axial direction, and is attached to the center in the axial direction so that both boxes communicate with each other. Socket mounting having a plurality of sockets 3 provided with holes 5 and a connecting hole 10 for connecting the socket mounting shaft 9 of the operating lever at the base end and passing through one of the boxes at the other end to fit into the mounting hole Ri one Do from the set of the extension mounting shaft 2 having a section 6, the plurality of socket the mounting hole 5 provided they that socket switched wrench attachment of the same dimensions to fit into the socket mounting portion 6 It is.

  For example, when four types of bolts and nuts are used in a machine to be assembled or repaired, it is sufficient to use two sockets in the socket exchange type wrench of the present invention, and the removed socket is placed on the floor or the like. Even so, since only one socket is placed, the risk that the socket placed by touching the limb will roll or the location of the socket will not be known is greatly reduced. In other words, in the conventional socket exchange type wrench, when four types of bolts and nuts are used, three sockets are placed on the floor, and there are many opportunities for hands and feet to touch the placed sockets. At the same time, it often happens that it is not known where the socket of the size to be replaced is placed, but the present invention can greatly reduce the occurrence of such a problem.

Further, the structure in which the socket holding shaft 14 is provided at the shaft end of the lever 12 that is gripped by the hand can hold the removed socket in the holding portion 13, so that four types of bolts, If nuts are used, all the sockets that fit into them can be attached to the lever, so that the sockets that are placed do not roll or the place where they are placed is not known. .

  The socket exchange type wrench according to the present invention is, for example, for repairing automobiles, and is combined with a double-headed socket combined with a double-headed socket that is often used for repairing the machine part for each work such as interior repair and undercarriage repair. By providing the extension mounting shaft 2 for extending the socket mounting shaft 9 having a short protruding length of the ratchet lever, it is possible to obtain an economical and more suitable one by assembling and repairing each machine.

  In other words, according to the present invention, when assembling or repairing a machine using bolts and nuts of a plurality of types of dimensions, the number of sockets used for work is reduced to half that of the prior art, and a tool is used for replacement. The number of sockets that can be returned to the box or placed on the floor is greatly reduced, so the efficiency of tightening and loosening bolts and nuts using a socket wrench can be greatly improved and work can be done comfortably. There is an effect.

  Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a view showing an example of a socket exchange type wrench according to the present invention suitable for repairing an interior of an automobile. The socket exchange type wrench according to the present invention is composed of a lever 1 having a conventional structure, an extension mounting shaft 2 and two sockets 3a and 3b. ing.

  For the sockets 3a and 3b, the dimensions of the boxes of the two sockets provided with boxes 4 of bolts and nuts of different dimensions at both ends in the axial direction are 17 mm and 14 mm, and 12 mm and 10 mm, for example. At the center in the axial direction of the sockets 3a and 3b, a mounting hole 5 for communicating the boxes 4 at both ends is provided. The attachment hole 5 is a hole having a generally square cross section that fits into the socket attachment portion 6 of the extension attachment shaft 2. The attachment hole 5 is provided with a recess 8 in which a locking ball 7 provided on the socket attachment portion 6 of the extension attachment shaft is engaged.

  The extension mounting shaft 2 includes a connection hole 10 that fits into a socket mounting shaft 9 provided on the lever 1 having a conventional structure at one end. Since the outer diameter of the portion provided with the connecting hole 10 is increased, a shaft portion 11 having a length passing through one of the boxes of the sockets 3a and 3b is provided, and a socket that fits the sockets a and b at the tip thereof. A mounting portion is provided. The socket mounting portion 6 may have a different shape from the socket mounting portion 6 of the existing lever, but it may not have a different shape.

  In the socket exchange type wrench having the above structure, the extension mounting shaft 2 is mounted on the lever 1, and one of the sockets 3 a and 3 b is mounted on the socket mounting portion 6. Then, tightening and loosening of bolts and nuts of four types of dimensions is performed by reverse mounting of the mounted socket and replacement with the other socket. When a conventional socket is required, the extension mounting shaft 2 is removed and the required socket is mounted on the socket mounting shaft 9 of the lever.

  FIG. 2 is a view showing an example of a lever particularly suitable for the socket exchange type wrench of the present invention. The lever 12 shown in the figure includes a socket mounting shaft 9a mounted via a ratchet having a structure similar to that of the conventional lever. The socket mounting shaft 9a corresponds to the socket mounting in the conventional lever shown in FIG. The protruding length is longer than that of the shaft 9. This protruding length is a length through which one of the boxes 4 of the sockets 3a and 3b passes and the socket mounting portion 6 at the tip thereof can be inserted into the mounting hole 5 of the socket. Therefore, when the lever 12 of FIG. 2 is used, it is not necessary to use the extension mounting shaft 2 as shown in FIG.

  Further, a socket holding portion 13 having the same projecting length as the socket mounting shaft 9a and having the same structure as the socket mounting portion 6 is provided at the end in the axial direction on the side gripped by the hand of the lever 12 in FIG. A socket holding shaft 14 is fixedly provided.

  In the lever having the structure of FIG. 2, when one of the sockets 3a and 3b is mounted on the socket mounting shaft 9a, the other is fitted and held on the socket holding shaft 14. Since the socket held in the axial direction at the end of the lever 12 held by the hand does not interfere with the lever operation, the bolt or nut can be tightened or loosened with the socket attached to the socket mounting shaft 9a in this state. it can. Then, the bolts and nuts of four types of dimensions are tightened and loosened by reversing the socket attached to the socket attachment shaft and exchanging with the socket held on the socket holding shaft. The two sockets that are frequently used are always attached to the lever 12, so that the sockets that are not used do not roll on the floor of the work place or do not know where to place them.

  A socket holding shaft for holding a socket that is not used can be provided as an attachment that can be attached to and detached from an existing lever 1 as shown in FIG. That is, as shown in FIG. 3, an attachment 16 provided with a socket holding portion 13 similar to that described with reference to FIG. 2 is attached to a grip portion 17 having a fitting hole 15 to be fitted to a portion gripped by the hand of the lever 1. By providing together with the sockets 3a and 3b and the extension mounting shaft 2 shown in FIG. 1, the same convenience as that of the dedicated lever 12 shown in FIG. By providing the attachment 16 with the grip 17 that is gripped when operating the lever 1, the fitting hole 15 can be lengthened, and the fitting state of the attachment 16 to the lever 1 becomes stable.

The partial cross section side view which shows 1st Embodiment of this invention Partial sectional side view showing only the lever of the second embodiment Partial cross-sectional side view showing an attachment-type socket holding shaft Sectional view showing a conventional socket

Explanation of symbols

1 Lever 2 Extension mounting shaft 3 Socket 4 Box 5 Mounting hole 6 Socket mounting part
9a Socket mounting shaft
10 Connecting hole
12 Lever
13 Socket holder
14 Socket holding shaft

Claims (3)

A plurality of sockets (3) having boxes (4) fitted to bolt heads of different dimensions at both ends in the axial direction and having mounting holes (5) in the center in the axial direction so as to communicate both the boxes, through one of the boxes Ri Do from the set of the socket mounting shaft length to fit the mounting hole (9a) or extended mounting axis (2) one lever equipped with (1, 12), said plurality number of sockets that are provided by the mounting holes of the same size to fit the socket mounting portion (6) of the socket mounting shaft, the socket switched wrench. A socket holding shaft (14) having a socket holding portion (13) having the same structure as the socket mounting portion (6) of the socket mounting shaft (9a) at the axial end of the lever (12) gripped by the hand , The socket replacement wrench according to claim 1, wherein the socket holding portion is provided with an axial direction the same as an axial direction of the lever . A plurality of sockets (3) having boxes (4) fitted to bolt heads of different dimensions at both ends in the axial direction and having mounting holes (5) in the center in the axial direction so as to communicate the two boxes, One end having a connection hole (10) with the socket attachment shaft (9) of the operating lever at the end and a socket attachment portion (6) that fits into the attachment hole through one of the boxes at the other end . Ri Do from the set of the extension mounting shaft (2), the plurality of sockets that are provided by the mounting holes of the same size to fit the socket mounting portion, the socket switched wrench attachment.

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