Socket wrench

Abstract

The utility model relates to the technical field of wrenches, in particular to a socket wrench which comprises a wrench head provided with a containing groove. The containing groove extends from one side of the wrench head to the other side of the wrench head in the depth direction, the side wall, formed in the wrench head, of the containing groove is an arc face, the opening, formed in the side of the wrench head, of the containing groove is provided with the maximum inner contour, and the opening, formed in the other side of the wrench head, of the containing groove is provided with the minimum inner contour. The utility model provides a socket spanner, which improves the production efficiency and prolongs the service life by improving the shape of a containing groove in the socket spanner and simplifying components in the socket spanner.

Description

Technical Field

[0001] The utility model relates to the technical field of wrenches, and particularly to a socket wrench. Background Art

[0002] The socket wrench can realize continuous rotation of the wrench handle for installation or disassembly operations through a ratchet assembly and a braking assembly arranged inside. Among them, the braking assembly and the switching piece cooperate to control the rotatable direction of the driving head of the socket wrench.

[0003] Therefore, multiple sets of components are arranged inside the socket wrench, and the shape of the accommodating grooves for installing and placing each component is relatively complex, which makes the manufacturing cost of the socket wrench relatively high and the service life of the socket wrench relatively short. Summary of the Utility Model

[0004] The utility model provides a socket wrench, which improves the shape of the internal accommodating grooves of the socket wrench and simplifies each component inside the socket wrench to improve the production and manufacturing efficiency and extend the service life.

[0005] In order to solve the above technical problems, the utility model is solved by the following technical solutions:

[0006] A socket wrench includes a wrench head, and an accommodating groove is arranged on the wrench head; the accommodating groove extends from one side of the wrench head to the other side in the depth direction, the side wall of the accommodating groove formed inside the wrench head is an arc surface, the opening of the accommodating groove at the one side of the wrench head has the largest inner profile, and the opening of the accommodating groove at the other side of the wrench head has the smallest inner profile.

[0007] In the utility model, the inner side walls of the accommodating grooves on the wrench head are all arc surfaces, the inner profile of the opening of the accommodating groove is larger the closer it is to the wrench surface, and the edge of any bottom surface inside the accommodating groove is an arc. This enables the use of boring processing instead of milling processing during production and processing, thereby improving production efficiency and reducing production costs; and when used by workers, all side walls inside the accommodating groove are arc surfaces, which can effectively reduce the wear of each internal component and extend the service life.

[0008] The lower end of the wrench head is connected to a wrench handle, and the worker operates by pulling the wrench handle.

[0009] Preferably, the accommodating groove is divided into a first accommodating chamber and a second accommodating chamber. The first accommodating chamber is above the second accommodating chamber. A wheel shaft through hole is arranged at the bottom of the first accommodating chamber, and a switching through hole is arranged at the bottom of the second accommodating chamber below; a ratchet, a braking tooth block and a switching piece are arranged on the wrench head. Among them, the ratchet is rotatably arranged in the first accommodating chamber, the braking tooth block is arranged in the second accommodating chamber, and the switching piece is rotatably arranged on the switching through hole.

[0010] In the present utility model, when an operator uses the socket wrench, the ratchet wheel in the first accommodation chamber cooperates with the braking tooth block in the second accommodation chamber. As the wrench handle rotates, the ratchet wheel rotates in a one-way reversible manner. By rotating the switching member, the rotatable direction of the ratchet wheel can be changed.

[0011] Preferably, a driving head is provided on the ratchet wheel at the opening side of the accommodation groove, and one end of the driving head is fixedly connected to the ratchet wheel.

[0012] In the present utility model, a cover plate is provided at the opening side of the accommodation groove to fix the ratchet wheel inside the wrench head. The driving head is arranged outside the cover plate. When in use, the operator rotates the wrench handle to make the driving head rotate in one direction for installation or disassembly operations.

[0013] Preferably, a bead hole is provided on the upper side of the driving head, and a steel ball is arranged in the bead hole.

[0014] In the present utility model, the steel ball arranged on the driving head can move along the inner side wall of the bead hole.

[0015] Preferably, a control member is arranged inside the ratchet wheel. The control member is arranged in the wheel shaft through hole and can have an axial relative displacement with the ratchet wheel. A first elastic body is arranged between the control member and the ratchet wheel, and both ends of the first elastic body elastically abut against the control member and the ratchet wheel respectively.

[0016] In the present utility model, by pressing the control member in this embodiment, the first elastic body can be compressed. At the same time, an axial relative displacement occurs between the control member and the ratchet wheel. When the control member is released, the first elastic body pushes the control member to make the control member return to its original position.

[0017] Preferably, a concave portion is provided at one end of the control member on the driving head side, and the concave portion can cooperate with the steel ball to control the displacement of the steel ball.

[0018] In the present utility model, the deepest part of the concave portion is located close to the ratchet wheel side, and the shallowest part is close to the driving head side and is smoothly connected to the surface of the control member. When the control member is pressed to the tightest, the deepest part of the concave portion moves to the bead hole. At this time, the steel ball can move closer to the control member, and the protruding part of the steel ball in the bead hole decreases. When the control member is released, the steel ball is gradually pushed to its original position by the concave portion.

[0019] Preferably, a ratchet tooth portion engaged with the ratchet wheel is provided on the ratchet wheel side of the braking tooth block. The lower end of the braking tooth block is a positioning portion, and the bottom surface of the positioning portion is a smooth concave surface.

[0020] In the present utility model, the braking tooth block controls the rotation of the ratchet wheel by meshing with the ratchet tooth portion of the ratchet wheel. The smooth concave surface of the positioning portion cooperates with the switching member to change the state of the braking tooth block when in use by the operator.

[0021] Preferably, a receiving hole is provided on the switching member at the braking tooth block side, and an elastic abutting assembly is arranged in the receiving hole

[0022] The elastic abutting component includes a pin block and a second elastic body. The top and bottom of the elastic abutting component respectively abut against the bottom of the receiving hole and the positioning portion of the brake tooth block, and the two ends of the second elastic body respectively abut against the bottom of the pin block and the bottom of the receiving hole.

[0023] In the present utility model, the brake tooth block is pushed by the elastic abutting component to be close to the ratchet wheel. When in use by a staff member, the switching member is rotated to change the position of the positioning portion abutted by the elastic abutting component, so as to realize the one-way rotation of the driving head. Description of the Drawings

[0024] Figure 1 It is a schematic diagram of a socket wrench in Embodiment 1;

[0025] Figure 2 It is a schematic diagram of the placement groove inside the wrench head of a socket wrench in Embodiment 1;

[0026] Figure 3 It is a schematic diagram of the placement groove inside the wrench head of a socket wrench in Embodiment 1 and its sectional view;

[0027] Figure 4 It is a schematic diagram of the internal components of a socket wrench in Embodiment 1;

[0028] Figure 5 It is a sectional view of the control member of a socket wrench in Embodiment 1;

[0029] Figure 6 It is a schematic diagram of the internal components of a socket wrench in Embodiment 1. Detailed Embodiments

[0030] To further understand the content of the present utility model, the present utility model will be described in detail in combination with embodiments. It should be understood that the embodiments are only for explaining the present utility model rather than limiting it.

[0031] Embodiment 1

[0032] The present Embodiment 1 provides a socket wrench, which includes a wrench head 110, and a placement groove 210 is provided on the wrench head 110; the placement groove 210 extends from one side of the wrench head 110 to the other side in the depth direction, the side wall of the placement groove 210 formed inside the wrench head 110 is an arc surface, the opening of the placement groove 210 formed at the said one side of the wrench head 110 has the largest inner profile, and the opening of the placement groove 210 formed at the said other side of the wrench head 110 has the smallest inner profile.

[0033] In this embodiment, the opening of the accommodation groove 210 is closer to the surface of the wrench, and its inner profile is larger. Moreover, the edge of any bottom surface inside the accommodation groove 210 is circular arc, with a simple shape and smooth edge. This enables the use of boring machining instead of milling machining during production and processing, thereby improving production efficiency and reducing production costs. And when in use by the staff, all side walls inside the accommodation groove 210 are arc surfaces, which can effectively reduce the wear of internal components and extend the service life.

[0034] In this embodiment, a wrench handle 120 is connected to the lower end of the wrench head 110, and the staff operates by pulling the wrench handle 110.

[0035] In this embodiment, the accommodation groove 210 is divided into a first chamber 310 and a second chamber 320. The first chamber 310 is above the second chamber 320. A wheel axle perforation 330 is provided at the bottom of the first chamber 310, and a switching perforation 340 is provided at the bottom below the second chamber 320. On the wrench head 110, there are a ratchet wheel 410, a brake tooth block 420, and a switching member 430. Among them, the ratchet wheel 410 is rotatably arranged in the first chamber 310, the brake tooth block 420 is arranged in the second chamber 320, and the switching member 430 is rotatably arranged on the switching perforation 340.

[0036] When the staff uses this socket wrench, the ratchet wheel 410 in the first chamber 310 cooperates with the brake tooth block 420 in the second chamber 320. As the wrench handle 120 rotates, the ratchet wheel 410 undergoes one-way reversible rotation. By rotating the switching member 430, the rotatable direction of the ratchet wheel 410 can be changed.

[0037] In this embodiment, a driving head 130 is provided on the ratchet wheel 410 on the opening side of the accommodation groove 210, and one end of the driving head 130 is fixedly connected to the ratchet wheel 410.

[0038] A cover plate is provided on the opening side of the accommodation groove 210 to fix the ratchet wheel 410 inside the wrench head 110. The driving head 130 is arranged outside the cover plate. When in use by the staff, by rotating the wrench handle 120, the driving head 130 rotates unidirectionally to perform installation or disassembly operations.

[0039] In this embodiment, a bead hole 440 is provided on the upper side surface of the driving head 130, and a steel ball 450 is provided in the bead hole 440.

[0040] The steel ball 450 provided on the driving head 130 can move along the inner side wall of the bead hole 440.

[0041] In this embodiment, a control member 510 is provided inside the ratchet wheel 410. The control member 510 is arranged in the wheel axle perforation 330 and can generate an axial relative displacement with the ratchet wheel 410. A first elastic body is provided between the control member 510 and the ratchet wheel 410, and both ends of the first elastic body are elastically abutted against the control member 510 and the ratchet wheel 410 respectively.

[0042] By pressing the control member 510 in this embodiment, the first elastic body can be compressed, and at the same time, an axial relative displacement occurs between the control member 510 and the ratchet wheel 410; when the control member 510 is released, the first elastic body pushes the control member 510 to make the control member 510 return to its original position.

[0043] In this embodiment, a recess 520 is provided at one end of the control member 510 on the driving head 130 side, and the recess 520 can cooperate with the steel ball 450 to control the displacement of the steel ball 450.

[0044] The deepest part of the recess 520 is located on the side close to the ratchet wheel 410, and the shallowest part is close to the driving head 130 side and is smoothly connected to the surface of the control member 510. When the control member 510 is pressed to the tightest, the deepest part of the recess 520 moves to the bead hole 440. At this time, the steel ball 450 can move closer to the control member, and the protruding part of the steel ball 450 in the bead hole 440 decreases; when the control member 510 is released, the steel ball 450 is gradually pushed back to its original position by the recess 520.

[0045] In this embodiment, a ratchet tooth portion 610 that meshes with the ratchet wheel 410 is provided on the ratchet wheel 410 side of the brake tooth block 420. The lower end of the brake tooth block 420 is a positioning portion 620, and the bottom surface of the positioning portion 620 is a smooth concave surface.

[0046] In this embodiment, the brake tooth block 420 controls the rotation of the ratchet wheel by meshing with the ratchet tooth portion 610 with the ratchet wheel 410; the smooth concave surface of the positioning portion 620 cooperates with the switching member 430 to change the state of the brake tooth block 420 when the staff uses it.

[0047] In this embodiment, a receiving hole 630 is provided on the switching member 430 on the brake tooth block 420 side, and an elastic abutting assembly 640 is provided in the receiving hole 630.

[0048] The elastic abutting assembly 640 includes a pin block and a second elastic body. The top and bottom ends of the elastic abutting assembly 640 respectively abut against the bottom of the receiving hole 630 and the positioning portion 620 of the brake tooth block 420, and the two ends of the second elastic body respectively abut against the bottom of the pin block and the bottom of the receiving hole 630.

[0049] In this embodiment, the elastic abutting assembly 640 is used to push the brake tooth block 420 to closely abut against the ratchet wheel 410. When the staff uses it, the switching member 430 is rotated to change the position of the positioning portion 620 against which the elastic abutting assembly 640 abuts. Taking the example of facing the driving head 130 side of the socket wrench and making the elastic abutting assembly 640 abut against the left end of the positioning portion 620:

[0050] At this time, the left end of the ratchet tooth part 610 is in close contact with the ratchet wheel 410, and the right end of the ratchet tooth part 610 is far away from the ratchet wheel 410, that is, the left end of the ratchet tooth part 610 meshes with the ratchet wheel 410, while the right end of the ratchet tooth part 610 does not mesh with the ratchet wheel 410. At this time, when the wrench handle 120 is rotated counterclockwise, the brake tooth block 420 prevents the ratchet wheel 410 from rotating relative to the wrench handle 120. Therefore, the drive head 130 and the wrench handle 130 rotate counterclockwise together; when the wrench handle 120 is rotated clockwise, the brake tooth block 420 is pushed away, the elastic component 640 is compressed, and the brake tooth block 420 cannot prevent the ratchet wheel 410 from rotating relative to the wrench handle 120. At this time, the drive head 130 achieves an idling effect.

[0051] It is easy to understand that those skilled in the art can combine, split, and reorganize the embodiments of the present application based on one or several embodiments provided by the present application to obtain other embodiments, and none of these embodiments exceed the protection scope of the present application.

[0052] The above schematically describes the present invention and its implementation manners. This description is not restrictive. What is shown in the embodiments is only part of the implementation manners of the present invention, and the actual structure is not limited thereto. Therefore, if those of ordinary skill in the art are inspired by it and design similar structural manners and embodiments without creative efforts without departing from the creative purpose of the present invention, they shall fall within the protection scope of the present invention.

Claims

1. A socket wrench, characterized in that: It includes a wrench head (110), and a receiving groove (210) is provided on the wrench head (110); the receiving groove (210) extends from one side of the wrench head (110) to the other side in the depth direction, the side wall of the receiving groove (210) formed inside the wrench head (110) is an arc surface, the opening of the receiving groove (210) formed at the said one side of the wrench head (110) has the largest inner profile, and the opening of the receiving groove (210) formed at the said other side of the wrench head (110) has the smallest inner profile; The receiving groove (210) is divided into a first chamber (310) and a second chamber (320). The first chamber (310) is above the second chamber (320). A wheel axle perforation (330) is provided at the bottom of the first chamber (310), and a switching perforation (340) is provided at the bottom of the second chamber (320) below; on the wrench head (110), there are a ratchet wheel (410), a brake tooth block (420) and a switching member (430). Among them, the ratchet wheel (410) is rotatably arranged in the first chamber (310), the brake tooth block (420) is arranged in the second chamber (320), and the switching member (430) is rotatably arranged on the switching perforation (340).

2. A socket wrench according to claim 1, characterized in that: The lower end of the wrench head (110) is connected with a wrench handle (120).

3. A socket wrench according to claim 1, wherein: On the ratchet wheel (410) at the opening side of the receiving groove (210), there is a driving head (130), and one end of the driving head (130) is fixedly connected to the ratchet wheel (410).

4. A socket wrench according to claim 3, characterized in that: On the upper side of the driving head (130), there is a bead hole (440), and a steel bead (450) is arranged in the bead hole (440).

5. A socket wrench according to claim 1, characterized in that: A control member (510) is arranged inside the ratchet wheel (410). The control member (510) is arranged in the wheel axle perforation (330) and can generate an axial relative displacement with the ratchet wheel (410). A first elastic body is arranged between the control member (510) and the ratchet wheel (410), and both ends of the first elastic body are elastically abutted against the control member (510) and the ratchet wheel (410) respectively.

6. The socket wrench according to claim 5, characterized in that: On the control member (510) at one end of the driving head (130), there is a recess (520), and the recess (520) can cooperate with the steel bead (450) to control the displacement of the steel bead (450).

7. A socket wrench according to claim 1, characterized in that: On the brake tooth block (420) at the side of the ratchet wheel (410), there is a ratchet tooth portion (610) meshing with the ratchet wheel (410). The lower end of the brake tooth block (420) is a positioning portion (620), and the bottom surface of the positioning portion (620) is a smooth concave surface.

8. A socket wrench according to claim 1, wherein: On the switching member (430) at the side of the brake tooth block (420), there is a receiving hole (630), and an elastic abutting assembly (640) is arranged in the receiving hole (630).

9. The socket wrench according to claim 8, wherein: The elastic abutting assembly (640) includes a pin block and a second elastic body. The top and bottom ends of the elastic abutting assembly (640) are elastically abutted against the bottom of the receiving hole (630) and the positioning portion (620) of the brake tooth block (420) respectively. Both ends of the second elastic body are elastically abutted against the bottom of the pin block and the bottom of the receiving hole (630).

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