JPH0720259U - Multi-level socket for wrench - Google Patents

Abstract

(57) [Summary] [Purpose] One socket enables different types of screws to be tightened. [Structure] A second hexagonal hole is formed on the outer side of the inner cylinder having the second hexagonal hole.
The outer cylinder having the hexagonal hole was fitted to be slidable in the axial direction. [Effect] Fastening work for screws of different sizes can be easily done with one socket.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-stage socket structure for a wrench that allows different sizes of bolts and nuts to be tightened using a single socket when tightening screws such as a torque wrench or ratchet wrench.

[0002]

[Prior art]

 For example, a conventional socket for fitting a bolt or nut of a predetermined size (hereinafter simply referred to as a screw) into a square drive provided in a torque wrench has a structure as shown in FIG. That is, the socket 1 has a square hole 2 into which a square drive (not shown) of a torque wrench is fitted, and a flower-shaped hexagonal hole 3 into which a screw to be tightened is fitted. A square drive of a torque wrench is fitted and coupled in the square hole 2, and then a screw to be tightened is engaged with the flower-shaped hexagonal hole 3 to tighten the screw.

[0003]

[Problems to be solved by the device]

 Therefore, in the conventional socket 1, since the size of the flower-shaped hexagonal hole 3 provided in one socket is constant, only one kind of screw corresponding to the size of the flower-shaped hexagonal hole 3 can be tightened. Therefore, when tightening screws of different sizes, for example, prepare several sockets that match the individual sizes in advance, and then install a socket that matches the size of the screw to be tightened into the torque wrench. Or, since it is used for replacement, workability is poor for tightening screws of various sizes. In addition, it is necessary to prepare a plurality of torque wrenches with individual sockets attached, so there is a problem such as poor economy.

[0004]

[Means for Solving the Problems]

 The present invention has been made in view of such a conventional problem, and has developed a multi-stage socket having hexagonal holes of different sizes that can be fitted into screws of different sizes. An object of the present invention is to provide a multi-stage wrench socket that can be tightened with screws of different sizes by using a torque wrench and one socket.

[0005]

【Example】

 Hereinafter, the present invention will be described in detail with reference to the embodiments shown in the drawings.

Embodiment 1 In FIGS. 2 to 7, reference numeral 11 is a socket of this embodiment, and this socket 11 has a square hole 14 into which a square drive 13 provided in a torque wrench 12 is fitted. It has an inner cylinder 15 and an outer cylinder 16 which is fitted to the inner cylinder 15 so as to be slidable in the axial direction of the inner cylinder 15. The inner cylinder 15 has an opening opposite to the square hole 14. A first flower-shaped hexagonal hole 17 is formed on the inner peripheral edge of the part, and a second flower-shaped hexagonal hole 18 is formed on the inner peripheral edge of the opening of the outer cylinder 16.

Long holes 19 in the generatrix direction are formed at three locations in the circumferential direction of the inner cylinder 15, and guide screws 20 loosely fitted in the long holes 19 are fixed to the outer cylinder 16. A piece 21 positioned inside the inner cylinder 15 is fixedly held on the guide screw 20.

Reference numeral 22 denotes a spring interposed between the flange 23 provided at the outer upper end portion of the inner cylinder 15 and the upper end of the outer cylinder 16, and the elastic force of the spring 22 causes As shown in FIG. 2, the lower edge opening edge of the outer cylinder 16 is urged so as to protrude from the lower edge opening edge of the inner cylinder.

In order to use the socket 11 configured as described above during screw tightening work, the square drive 13 of the wrench 12 such as a torque wrench or ratchet wrench is fitted into the square hole 14 of the socket 11. .

Normally, the opening of the outer cylinder 16 is pushed down from the lower opening of the inner cylinder 15 by the elastic force of the spring 22, so a nut to be tightened, that is, a bolt having a bottomed hole 28 in the center is formed. When the outer diameter of the nut 24 screwed into the screw 29 is the same as that of the second flower-shaped hexagonal hole 18 provided in the outer cylinder 16 as shown in FIG. 6, the outer cylinder 16 tightens the screw 24. You can wear it. At this time, since the protruding portion of the piece 21 is fitted into the bottomed hole 28 of the bolt 29, the outer cylinder 16 is not pushed up.

Further, when the outer diameter of the screw 25 to be tightened is the same as that of the first flower-shaped hexagonal hole 17 provided in the inner cylinder 15 as shown in FIG. 7, the screw 25 has the first flower-shaped shape. Fit in the hexagon socket. Simultaneously with this fitting, since the piece 21 is pushed up by the upper surface of the screw 25, the outer cylinder 16 rises against the elastic force of the spring 22 as the piece 21 moves up. The screw 25 fits into the first flower-shaped hexagonal hole 17 of the inner cylinder 15 without being disturbed, and the tightening work of the screw 25 can be smoothly performed.

Embodiment 2 In FIG. 8 to FIG. 13, this embodiment is a position regulating means for pushing the outer cylinder 16 to the inner cylinder 15 to position it so that it is elastically projected onto the outer surface of the inner cylinder 15. The inner wall of the outer cylinder 16 is provided with a recess 27 into which the ball 26 is fitted.

Therefore, in this embodiment, when the screw 24 is tightened as shown in FIG. 12, the second flower hexagonal hole 18 of the outer cylinder 16 is used to perform the screw tightening, and as shown in FIG. When tightening the small screw 25, the outer cylinder 16 is pushed up against the elastic force of the spring 22 and the recess 27 is fitted and held in the ball 26 so that the outer cylinder 11 is not disturbed. The screw 25 can be tightened.

[0014]

[Effect of device]

 INDUSTRIAL APPLICABILITY As described above, according to the present invention, the inner cylinder 15 having the square hole 14 into which the square drive 13 of the wrench is fitted and the first hexagonal hole 17 formed at the other end, and the inner cylinder 15 are provided. The outer cylinder 16 is axially slidably fitted to the outer surface of the outer cylinder 16 and has the second hexagonal hole 18 formed in the inner circumference of the opening. Since it is a multi-stage socket having a spring 22 for protruding the cylinder 15 from the rim of the inner cylinder on the side of the first hexagonal hole 17, the hexagonal holes provided in the inner cylinder and the outer cylinder are selectively selected. This has the effect of facilitating the work of tightening screws of different sizes.

[Brief description of drawings]

FIG. 1 is a sectional view of a conventional socket.

FIG. 2 is an explanatory sectional view of the socket of the first embodiment of the present invention.

FIG. 3 is a plan view of the socket according to the first embodiment of the present invention.

FIG. 4 is a bottom view of the socket according to the first embodiment of the present invention.

FIG. 5 is an operation explanatory view of the socket of the first embodiment of the present invention.

FIG. 6 is an explanatory view of using the socket according to the first embodiment of the present invention.

FIG. 7 is an explanatory view of using the socket according to the first embodiment of the present invention.

FIG. 8 is an explanatory sectional view of a socket according to a second embodiment of the present invention.

FIG. 9 is a plan view of a socket according to a second embodiment of the present invention.

FIG. 10 is a bottom view of the socket according to the second embodiment of the present invention.

FIG. 11 is an operation explanatory view of the socket of the second embodiment of the present invention.

FIG. 12 is an explanatory view of using a socket according to a second embodiment of the present invention.

FIG. 13 is an explanatory view of using a socket according to a second embodiment of the present invention.

[Explanation of symbols]

 11 ... Socket 12 ... Torque wrench 13 ... Square drive 14 ... Square hole 15 ... Inner cylinder 16 ... Outer cylinder 17 ... First flower-shaped hexagonal hole 18 ... Second flower-shaped hexagonal hole 19 ... Oblong hole 20 ... Guide screw 21 ... Piece 22 ... Spring 23 ... Tsuba 24 ... Screw 25 ... Screw 26 ... Ball 27 ... Recess 28 ... Bottom hole 29 ... Bolt

Claims (2)

[Scope of utility model registration request] 1. An inner cylinder (15) having a square hole (14) into which a square drive (13) of a wrench is fitted, and a first hexagonal hole (17) formed at the other end. An outer cylinder (16) fitted to the outer surface of the inner cylinder (15) so as to be slidable in the axial direction and having a second hexagonal hole (18) formed in the inner circumference of the opening;
Is interposed between the inner cylinder (15) and the outer cylinder (16),
A spring (22) for protruding the outer cylinder (15) beyond the first hexagonal hole (17) side rim of the inner cylinder, and a long hole (elongated in the generatrix direction of the inner cylinder (15) ( 19),
A guide screw (20) fixed to the outer cylinder (16) and penetrating through the elongated hole (19) and protruding into the inner cylinder (15), and the guide screw (20) in the inner cylinder (15). A multi-stage wrench socket having a piece (21) fixedly held. 2. An inner cylinder (15) having a square hole (14) into which a square drive (13) of a wrench is fitted, and a first hexagonal hole (17) formed at the other end, An outer cylinder (16) fitted to the outer surface of the inner cylinder (15) so as to be slidable in the axial direction and having a second hexagonal hole (18) formed in the inner circumference of the opening;
Is interposed between the inner cylinder (15) and the outer cylinder (16),
A spring (22) for causing the outer cylinder (15) to project beyond the first hexagonal hole (17) side rim of the inner cylinder and an outer peripheral surface of the inner cylinder (15) elastically projectingly held. Ball (2
6) and the inner peripheral surface of the outer cylinder (16) and the ball (26) is elastically fitted into the outer cylinder (16).
A multi-stage wrench socket having a recess (27) for restricting the position of the wrench.