CN210132434U - Socket spanner - Google Patents

Abstract

The utility model relates to a technical field is dismantled to the bolt, provides a box spanner very much. The socket wrench comprises a hollow cylindrical sleeve part (1), a handle part (2) and a clamping part (3). The handle part (2) is fixedly connected with the sleeve part (1), and the handle part (2) is configured to drive the sleeve part (1) to rotate when being hammered, so that the sleeve part (1) screws or unscrews the nut; the clamping portion (3) comprises two clamping members (31), each clamping member (31) comprises a head portion (311) and a tail portion (312), the tail portions (312) of the two clamping members (31) are overlapped and the overlapped portion is connected to the end face of the sleeve portion (1) or a position on the handle portion (2) adjacent to the end face of the sleeve portion (1) by a pin (32), and the head portions (311) of the two clamping members (31) are configured to clamp the nut when the sleeve portion (1) sheathes the nut. The socket wrench prevents ejection from the nut when the nut is tightened or loosened.

Description

Socket spanner

Technical Field

The utility model relates to a technical field is dismantled to the bolt, provides a box spanner very much.

Background

In the production process of the oil well, when a wellhead bolt is loosened or the wellhead device needs to be replaced, a socket wrench needs to be used for fastening the nut or loosening the nut to replace the wellhead device.

The socket wrench commonly used at present generally comprises a cylindrical socket head portion and a handle portion, the socket head portion is sleeved on the nut, and the hammer head is used for hammering the handle portion of the socket wrench to fasten or loosen the nut.

In the process of implementing the present invention, the inventor finds that the prior art has at least the following problems: the box spanner that prior art provided is generally only with the cover barrel suit on the nut, relative separation between nut and the sleeve head, when hammering box spanner's handle portion, because the too big box spanner that causes easily of power way pops out from the nut and hurts the people, has certain potential safety hazard.

SUMMERY OF THE UTILITY MODEL

An embodiment of the utility model provides a box spanner can prevent that the sleeve from popping out when screwing up or unscrewing the nut. The technical scheme of the utility model as follows:

a socket wrench comprises a socket portion, a handle portion and a clamping portion, wherein,

the sleeve part is in a hollow cylinder shape, and the inner cavity of the sleeve part is suitable for sleeving the nut;

the handle portion is fixedly connected with the sleeve portion, and the handle portion is configured to drive the sleeve portion to rotate when being hammered, so that the sleeve portion tightens or loosens the nut;

the clamping portion comprises two clamping members, each clamping member comprising a head portion and a tail portion, the tail portions of the two clamping members overlapping and the overlapping being pinned to an end surface of the sleeve portion or a location on the handle portion adjacent the end surface of the sleeve portion, the head portions of the two clamping members being configured to clamp the nut when the sleeve portion nests the nut.

Optionally, the handle portion comprises a first portion and a second portion, a first end of the first portion being fixedly connected to an outer wall of the sleeve portion, a second end of the first portion being fixedly connected to the second portion (22), a width of the second portion being greater than a width of the first portion, the second portion being configured to rotate the nut via the first portion and the sleeve portion when subjected to a hammering blow.

Alternatively, the sleeve portion, the first portion and the second portion are integral.

Optionally, the second portion is provided with a first through hole therethrough, the first through hole being configured to pass a rope or a pin therethrough to suspend the socket wrench.

Optionally, the cross-section of the inner cavity of the sleeve portion is regular hexagonal.

Optionally, the head portion comprises a first straight plate portion and a second straight plate portion, the first straight plate portion and the second straight plate portion being angled to facilitate gripping of the nut by the head portions of the two gripping members when closed.

Optionally, the end face of the sleeve portion or the end face of the handle portion adjacent to the sleeve portion is provided with a threaded groove, the overlapping part of the tail parts of the two clamping pieces is provided with a second through hole, and the pin is provided with an external thread.

Optionally, the tail portions of the two clamping members are configured to control the clamping and unclamping of the nut by the two head portions by changing an angle between the two tail portions, and the pin is configured to control the two clamping members to be in a fixed state or an openable state by screwing and unscrewing.

Alternatively, the handle portion may extend in a direction coinciding with a radial direction of the sleeve portion.

Alternatively, the handle portion may extend in the same direction as the axial direction of the sleeve portion.

The beneficial effects of the utility model reside in at least:

the inner cavity of the sleeve part of the socket wrench provided by the embodiment of the application is suitable for sleeving the nut, so that when the sleeve part is sleeved on the nut, the sleeve part can drive the nut to rotate synchronously during rotation, and the nut can be screwed or unscrewed. The handle part is fixedly connected with the sleeve part, and the sleeve part can be driven to rotate by hammering the handle part, so that the nut can be screwed up or unscrewed. The clamping portion comprises two clamping members so that the nut can be clamped by the two clamping members. Each of the clamping members includes a head portion and a tail portion, the tail portions of the two clamping members being arranged to overlap and the overlap being pinned to the sleeve portion or the handle portion such that the angle between the head portions can be controlled by controlling the angle between the tail portions of the two clamping members to thereby grip the nut when the head portions are brought into close proximity. Like this when hammering handle portion, can prevent that whole box spanner from popping out from the nut and causing the injury to eliminate the potential safety hazard, improve operating speed. The device has simple structure and convenient operation.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.

Fig. 1 is a schematic structural diagram of a socket wrench according to an embodiment of the present disclosure;

FIG. 2 is a schematic structural view of another socket wrench according to an embodiment of the present disclosure;

fig. 3 is a schematic structural diagram of connection of two clamping members of a socket wrench according to an embodiment of the present application.

The reference numerals in the figures denote:

1-a sleeve portion;

2-handle part; 21-first portion; 22-second portion; 2201-first via;

3-a clamping part; 31-a clamp; 311-head; 3111 — first panel portion; 3112-second straight plate portion; 312-tail; 3121-second through hole; 32-pin.

Detailed Description

In order to make the technical solutions and advantages of the present invention clearer, the following will describe the embodiments of the present invention in further detail with reference to the accompanying drawings.

An embodiment of the application provides a socket wrench, including sleeve portion, handle portion and clamping part. The sleeve part is in a hollow cylinder shape, and the inner cavity of the sleeve part is suitable for sleeving the nut; a handle portion fixedly connected to the sleeve portion, the handle portion being configured to be hammered to cause the sleeve portion to rotate, thereby tightening or loosening the nut; the clamping portion includes two clamping members, each clamping member including a head portion and a tail portion, the tail portions of the two clamping members overlapping and the overlapping portion being pinned to an end surface of the sleeve portion or a position on the handle portion adjacent to the end surface of the sleeve portion, the head portions of the two clamping members being configured to clamp the nut when the sleeve portion nests the nut.

The inner cavity of the sleeve part of the socket wrench is suitable for sleeving the nut, so that when the sleeve part is sleeved on the nut, the sleeve part can drive the nut to rotate synchronously to tighten or loosen the nut. The handle part is fixedly connected with the sleeve part, and the sleeve part can be driven to rotate by hammering the handle part, so that the nut can be screwed up or unscrewed. The clamping portion comprises two clamping members so that the nut can be clamped by the two clamping members. Each of the clamping members includes a head portion and a tail portion, the tail portions of the two clamping members being arranged to overlap and the overlap being pinned to the sleeve portion or the handle portion such that the angle between the head portions can be controlled by controlling the angle between the tail portions of the two clamping members to thereby grip the nut when the head portions are brought into close proximity. Like this when hammering handle portion, can prevent that whole box spanner from popping out from the nut and causing the injury to eliminate the potential safety hazard, improve operating speed. The device has simple structure and convenient operation.

Fig. 1 is a schematic structural diagram of a socket wrench according to an embodiment of the present disclosure; FIG. 2 is a schematic structural view of another socket wrench according to an embodiment of the present disclosure; fig. 3 is a schematic structural diagram of a clamping member of a socket wrench according to an embodiment of the present disclosure.

Fig. 1 is a schematic structural diagram of a socket wrench according to an embodiment of the present disclosure; fig. 2 is a schematic structural diagram of a socket wrench according to a second embodiment of the present application; fig. 3 is a schematic structural diagram of connection of two clamping members of a socket wrench according to an embodiment of the present application.

Referring to fig. 1, the present embodiment provides a socket wrench, which includes a socket portion 1, a handle portion 2 and a gripping portion 3, wherein the socket portion 1 has a hollow cylindrical shape, and an inner cavity of the socket portion 1 is adapted to receive a nut.

For example, referring to fig. 1, in one implementation of the embodiments of the present application, the sleeve portion 1 may be hollow cylindrical and the inner cavity of the sleeve portion 1 may be shaped to fit over the nut. Thus, the sleeve part 1 can be sleeved on the nut, so that the nut can be driven to rotate by the sleeve part 1, and the nut can be fastened or loosened.

For example, referring to fig. 1, the cross-section of the inner cavity of the sleeve portion 1 may be a regular hexagon.

In one implementation of the embodiment of the present application, the nut is generally in the shape of a regular hexagon, so in order to ensure the fit between the sleeve portion 1 and the nut, the cross section of the inner cavity of the sleeve portion 1 may also be designed as a regular hexagon. Moreover, in order to ensure the stability of the sleeve portion 1 when the driving nut rotates, the inner diameter of the sleeve portion 1 may be designed to be equal to or slightly larger than the outer diameter of the nut, so that the sleeve portion 1 and the nut may be sleeved more tightly, and the relative rotation between the sleeve portion 1 and the nut when the socket wrench is hammered is avoided.

Of course, the shape of the inner cavity of the sleeve portion 1 is not limited to the regular hexagon, and the inner cavity of the sleeve portion 1 may be pentagonal or another reasonable shape in another embodiment of the present invention.

Referring to fig. 1, a handle portion 2 is fixedly connected to the sleeve portion 1, the handle portion 2 being configured to drive the sleeve portion 1 to rotate when being hammered, so that the sleeve portion 1 tightens or loosens the nut.

For example, in one implementation of the embodiment of the present application, the handle portion 2 may be rectangular, and the first end of the handle portion 2 is fixed to the outer wall of the sleeve portion 1, so that the sleeve portion 1 can be rotated by hammering the second end of the handle portion 2, and the sleeve portion 1 can be used to tighten or loosen a nut.

Furthermore, referring to fig. 1, in one implementation of the embodiments of the present application, the thickness of the handle portion 2 and the thickness of the sleeve portion 1 may be equal, so that the force transmission between the handle portion 2 and the sleeve portion 1 is uniform when the handle portion 2 is subjected to a hammer blow.

Of course, the thickness of the handle portion 2 is not limited to the same thickness as that of the sleeve portion 1, and the thickness of the handle portion 2 may be smaller or larger than that of the sleeve portion 1 in other embodiments of the present invention.

The shape of the handle portion 2 is not limited to the rectangular parallelepiped shape, and the handle portion 2 may have a cylindrical shape or other appropriate shape in another embodiment of the present invention.

In addition, referring to fig. 1, in one implementation of the embodiment of the present application, the handle portion 2 may include a first portion 21 and a second portion 22, a first end of the first portion 21 may be fixedly connected to an outer wall of the sleeve portion 1, a second end of the first portion 21 may be fixedly connected to the second portion 22, a width of the second portion 22 may be greater than a width of the first portion 21, and the second portion 22 is configured to rotate the nut by the first portion 21 and the sleeve portion 1 when the hammer is applied to the second portion 22.

For example, referring to fig. 1, the first portion 21 and the second portion 22 may each have a rectangular parallelepiped shape, so that when the socket wrench is fitted over the nut, the second portion 22 may be hammered to rotate the socket portion 1 via the first portion 21. Moreover, the width of the second part 22 is designed to be larger than the width of the first part 21, so that the second part 22 can bear a larger hammering force, and the situation that the force borne by the second part 22 is too small to affect the screwing and unscrewing operation of the whole socket wrench on the nut is avoided.

Alternatively, in other implementations of the embodiments of the present application, the shapes of the first portion 21 and the second portion 22 are not limited to the rectangular parallelepiped shape, and in other implementations of the embodiments of the present application, the first portion 21 and the second portion 22 may also be cylindrical or other reasonable shapes.

For example, when the first portion 21 has a cylindrical shape and the second portion 22 has a rectangular parallelepiped shape, the width of the second portion 22 may be larger than the diameter of the first portion 21.

Of course, the improvement method for improving the bearing capacity of the second portion 22 in the present application is not limited to the above-mentioned design of the width of the second portion 22 to be larger than the width of the first portion 21, and in other implementation manners of the embodiment of the present application, the thickness of the second portion 22 may also be designed to be larger than the thickness of the first portion 21, so that the effect of enhancing the bearing capacity of the second portion 22 may also be achieved.

In one implementation of the embodiment of the present application, the sleeve portion 1, the first portion 21 and the second portion 22 may be integral.

For example, since the socket wrench is used to tighten or loosen the nut by being hammered, the socket wrench may be made of a metal material so that the outer wall of the entire socket wrench can be directly shaved into the shape at the time of design. Thus, the stress of the whole socket wrench can be ensured to be uniform.

Alternatively, in another implementation of the embodiment of the present application, the sleeve portion 1, the first portion 21, and the second portion 22 may be separate parts, and the sleeve portion 1, the first portion 21, and the second portion 22 may be integrally fixed by welding or other appropriate means. This allows the sleeve portion 1, the first portion 21 and the second portion 22 to be made of some discarded metal pieces, which makes it possible to save material by waste utilization.

Referring to fig. 1, in one implementation of the embodiment of the present application, the second portion 22 may be provided with a first through hole therethrough, the first through hole being configured to pass a rope or a pin therethrough to suspend the socket wrench.

For example, referring to fig. 1, the first through hole 2201 may be disposed in the up-and-down direction of the second portion 22 with the position of the clamping portion 3, and the socket wrench may be conveniently hung on a wall or other places by passing a string or a pin through the first through hole 2201.

Of course, the arrangement direction of the first through hole 2201 in the present application is not limited to the above-mentioned up-down direction, and in other implementations of the embodiment of the present application, the first through hole 2201 may be arranged in the left-right direction of the second portion 22 throughout the width of the second portion 22.

Referring to fig. 1, the clamping portion 3 includes two clamping members 31, each of the clamping members 31 includes a head portion 311 and a tail portion 312, the tail portions 312 of the two clamping members 31 overlap and the overlapping portion is connected to an end surface of the sleeve portion 1 or a position on the handle portion 2 adjacent to the end surface of the sleeve portion 1 by a pin 32, and the head portions 311 of the two clamping members 31 are configured to clamp the nut when the sleeve portion 1 is fitted over the nut.

For example, referring to fig. 3, in one implementation of the embodiment of the present application, with the overlapping place of two clamping members 31 as a boundary, the portion above the overlapping place may be the head portion 311 of the clamping member 31, and the portion below the overlapping place and the overlapping place may be the tail portion 312 of the clamping member 31. The tail parts 312 of the two clamping parts 31 are overlapped, and the overlapped part can be connected to the end surface of the sleeve part 1 by the pin 32 or the end surface of the handle part 2 adjacent to the sleeve part 1, namely, the two clamping parts 31 can be connected into a scissors shape by the pin 32. So that the opening and closing between the head portions 311 of the two holding members 31 can be controlled by operating the tail portions 312 of the two holding members 31. The heads 311 of the two clamps 31 are thus operable to grip the nut when the sleeve 1 is received by the nut, thereby preventing the sleeve 1 from being ejected from the nut when the handle portion 2 is hammered.

Referring to fig. 3, in one implementation of the embodiment of the present application, the head portion 311 of each clamping portion 31 may include a first straight plate portion 3111 and a second straight plate portion 3112, and the first straight plate portion 3111 and the second straight plate portion 3112 may be angled so that the head portions 311 of the two clamping members 31 may clamp the nut when closed.

For example, when the inner cavities of the nut and the sleeve portion 1 are both in the shape of a regular hexagon, the angle between the first straight plate portion 3111 and the second straight plate portion 3112 may be equal to or slightly smaller than the inner angle of the regular hexagon, so that when the operation tail portion 312 controls the head portions 311 of the two holding members 31 to be closed, the first straight plate portion 3111 and the second straight plate portion 3112 can be made to hold the outer wall of the nut,

moreover, the general nuts are all provided with chamfers, and because the size of the outer wall at the chamfers of the nuts is generally smaller than that of the outer walls at other positions of the nuts, when the sleeve part 1 is sleeved on the nuts, the clamping part 3 can clamp the chamfers at the lower sides of the nuts, so that the sleeve part 1 can be prevented from popping up from the nuts to hurt people.

Alternatively, in other implementations of the embodiments of the present application, since the screw is generally smaller in size than the nut, when the sleeve portion 1 is fitted over the nut, the two clamping members 31 can be closed such that the screw below the nut is located in the region formed by the heads 311 of the two clamping members 31, thereby also avoiding ejection of the sleeve portion 1 from the nut.

In one implementation of the embodiment of the present application, the end surface of the sleeve portion 1 may be provided with a threaded groove, the overlapping portion of the tail portions 312 of the two clamping members 31 may be provided with a second through hole 3121, and the pin 32 may be provided with an external thread.

For example, the end surface of the sleeve portion 1 may be provided with a screw groove which is aligned with the second through holes 3121 of the tail portions 132 of the two clamping portions 31, and the pin 32 provided with an external thread may be connected with the screw groove through the second through holes 3121 of the tail portions 132 of the two clamping portions 31, so that when the nut is clamped using the two clamping portions 31, the head portions 311 of the two clamping portions 31 may be fixed in a state of clamping the nut by tightening the pin 32.

Of course, the position of the screw groove is not limited to the end surface of the sleeve portion 1, and in other embodiments of the present invention, the screw groove may be provided on the end surface of the handle portion 2 near the sleeve portion 1, or on the end surface of the joint between the handle portion 2 and the sleeve portion 1, or may be in other reasonable positions.

The tail parts 312 of the two clamping pieces 31 can be configured to control the clamping and the loosening of the nut by the two head parts 311 by changing the angle between the two tail parts 312, and the pin 32 can be configured to control the two clamping pieces 31 to be in a fixed state or an openable and closable state by screwing and unscrewing.

For example, referring to fig. 1 and 3, in one implementation of the embodiment of the present application, the tail 312 of each clamping member 31 may have a length smaller than that of the head 311, so that the clamping and unclamping of the nut by the two heads 311 can be controlled by operating the tail 312 of the clamping member 31 to change the angle between the tails 312 of the two clamping members 31.

Furthermore, the tightening and loosening of the pin 32 controls the two clamps 31 to be in a fixed state or an openable state.

For example, when the socket wrench is used, the pin 32 may be loosened, so that the two clamping members 31 can rotate around the pin 32. Then, the tail parts 312 of the two clamping pieces 31 are operated towards the direction away from each other, and the tail parts 312 drive the head parts 311 to be opened, so that the clamping part 3 and the sleeve part 1 can be conveniently sleeved on the nut. After the sleeve portion 1 is fitted over the nut, the tail portions of the two holding portions 31 are operated to rotate in the direction to approach each other, so that the two head portions 311 are closed to clamp the nut, and at this time, the pin 32 is tightened again, so that the head portions 311 of the two holding portions 31 are fixed to the clamped nut. Then, the sleeve part 1 is driven by hammering the handle part 2 to screw or unscrew the nut, so that the sleeve part 1 can be prevented from being ejected from the nut.

Referring to fig. 1, the extending direction of the handle portion 2 may coincide with the radial direction of the sleeve portion 1.

For example, in one implementation of the embodiment of the present application, the handle portion 2 may be a length extending direction from the first end of the first portion 21 to the second portion 22, and the clamping portion 3 may be a length extending direction from the first straight portion 3111 of the head portion 311 to the tail portion 312.

When the screw groove is provided on the end surface of the sleeve portion 1 or the end surface of the handle portion 2 close to the sleeve portion 1, the longitudinal extension direction of the handle portion 2 may coincide with the longitudinal direction of the grip portion 3, that is, the screw groove may be provided on the end surface of the sleeve portion 1 close to the handle portion 2.

Alternatively, when the screw groove is provided on the end surface of the sleeve portion 1, the handle portion 2 may be provided at any position of the outer wall of the sleeve portion 1.

Referring to fig. 2, in another socket wrench provided in the embodiment of the present application, the handle portion 2 may extend in the same direction as the axial direction of the socket portion 1.

For example, the direction from the first end of the first portion 21 to the second portion 22 may be the longitudinal extension direction of the handle portion 2, and the direction from the first straight plate portion 3111 of the head portion 311 to the tail portion 312 may be the longitudinal direction of the holding portion 3. The longitudinal extension direction of the handle portion 2 may coincide with the axial direction of the sleeve portion 1, that is, may be perpendicular to the longitudinal direction of the grip portion 3.

Referring to fig. 2, the position where the clamping portion 3 is placed is the upper end of the sleeve portion 1, and the end surface of the first end of the handle portion 2 may be flush with the end surface of the upper end of the sleeve portion 1, or may be flush with the end surface of the lower end of the sleeve portion 1.

Likewise, when the screw groove is provided on the end face of the sleeve portion 1, the handle portion 2 may be provided at any position of the outer wall of the sleeve portion 1.

Also, referring to fig. 2, a first through hole 2201 may penetrate through both front and rear sides of the second portion 22 of the handle part 2 to facilitate a string to pass therethrough to hang the socket wrench.

Alternatively, the first through-hole 2201 may extend through both left and right sides of the second portion 22 of the handle portion 2.

Taking the socket wrench shown in fig. 1 as an example, the method for using the socket wrench to tighten the flange nut of the oil well opening can be as follows:

the two holding members 31 are placed on the handle portion 2 in an overlapping manner, the second through holes 3121 of the tail portions 312 of the two holding members 31 are aligned with the threaded grooves of the handle portion 2, and the two holding members 31 are connected to the handle portion 2 using the pin 32.

The pin 32 is prevented from being tightened, so that the two holding members 31 can rotate around the pin 32.

The heads 311 of the two clamps 31 are opened and the clamp 3 of a socket wrench is placed down over the nut above the flange and the pin 32 is tightened so that the heads 311 of the two clamps 31 grip the lower chamfer of the nut.

The other installed socket wrench clamping part 3 is sleeved on the nut below the flange upwards, and the head parts 311 of the two clamping pieces 31 are clamped at the chamfer of the upper end of the nut by tightening the pin 32.

The handle portion 2 of the lower socket wrench is held or fixed and the hammer head is used to hammer the second portion 22 of the handle portion 2 of the upper socket wrench so that the socket wrench tightens the nut while ensuring that the lower socket wrench does not rotate synchronously.

The foregoing is a more detailed description of the present invention, taken in conjunction with the specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments thereof. To the utility model belongs to the technical field of the ordinary skilled person say, do not deviate from the utility model discloses a other embodiments that reach under the technical scheme all should be contained the utility model discloses a within the scope of protection.

Claims (10)

1. A socket wrench, characterized in that it comprises a socket portion (1), a handle portion (2) and a gripping portion (3), wherein,

the sleeve part (1) is in a hollow cylinder shape, and the inner cavity of the sleeve part (1) is suitable for sleeving a nut;

the handle part (2) is fixedly connected with the sleeve part (1), and the handle part (2) is configured to drive the sleeve part (1) to rotate when being hammered, so that the sleeve part (1) screws or unscrews the nut;

the clamping portion (3) comprises two clamping pieces (31), each clamping piece (31) comprises a head portion (311) and a tail portion (312), the tail portions (312) of the two clamping pieces (31) are overlapped, the overlapped part is connected to the end face of the sleeve portion (1) or the position on the handle portion (2) adjacent to the end face of the sleeve portion (1) through a pin (32), and the head portions (311) of the two clamping pieces (31) are configured to clamp the nut when the sleeve portion (1) sleeves the nut.

2. A socket wrench according to claim 1, wherein the handle portion (2) comprises a first portion (21) and a second portion (22), a first end of the first portion (21) being fixedly connected to an outer wall of the sleeve portion (1), a second end of the first portion (21) being fixedly connected to the second portion (22), a width of the second portion (22) being greater than a width of the first portion (21), the second portion (22) being configured to rotate the nut when subjected to a hammering action by means of the first portion (21) and the sleeve portion (1).

3. A socket wrench according to claim 2, wherein the socket portion (1), the first portion (21) and the second portion (22) are integral.

4. The socket wrench as claimed in claim 3, wherein the second portion (22) is provided with a first through hole (2201) therethrough, the first through hole (2201) being configured to pass a string or a pin therethrough for suspending the socket wrench.

5. A socket wrench according to claim 1, wherein the cross-section of the inner cavity of the sleeve portion (1) is regular hexagonal.

6. A socket wrench as claimed in claim 5, wherein the head portion (311) comprises a first straight plate portion (3111) and a second straight plate portion (3112), the first straight plate portion (3111) and the second straight plate portion (3112) being angled so that the head portions (311) of the two clamping members (31) clamp the nut when closed.

7. A socket wrench as claimed in claim 6, wherein the end face of the sleeve portion (1) or the end face of the handle portion (2) adjacent thereto is provided with a threaded recess, the overlap of the tail portions (312) of the two clamping members (31) is provided with a second through hole (3121), and the pin (32) is provided with an external thread.

8. A socket wrench as claimed in claim 7, wherein the tail portions (312) of the two jaws (31) are configured to control the gripping and release of the nut by the two head portions (311) by changing the angle between the two tail portions (312), the pin (32) being configured to control the two jaws (31) in a fixed or openable condition by tightening and loosening.

9. A socket wrench according to any one of claims 1-8, in which the handle portion (2) extends in a direction which coincides with a radial direction of the sleeve portion (1).

10. A socket wrench according to any one of claims 1-8, in which the handle portion (2) extends in a direction which coincides with the axial direction of the sleeve portion (1).

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