Sleeve adapter for ratchet wrench

Abstract

The sleeve adapter comprises a first end and a second end opposite to the first end, the first end is constructed to be a hollow sleeve, the hollow sleeve comprises a body, a hole is formed in the outer wall of the body, a spherical body is contained in the hole, and a locking pin is arranged in the hollow sleeve. The locking pin has a flange, a first region disposed on a side of the flange facing the first end, and a second region disposed on the other side of the flange facing the second end, the spherical body protruding from the hole and beyond an edge of the outer wall of the body in a natural state of the sleeve adapter, and the spherical body is used for being matched with a concave part arranged on the inner side wall of a central hole of the head part of the ratchet wrench, so that the hollow sleeve of the sleeve adapter is locked to the ratchet wrench. According to the sleeve adapter disclosed by the utility model, the operation is convenient and the connection is firm and reliable in the connection process of the sleeve adapter and a ratchet wrench, and the operation is also convenient in the unlocking process.

Description

Technical Field

[0001] This utility model relates to a socket coupling for a ratchet wrench. Background Technology

[0002] When using a socket connector, users want to securely engage the socket connector with a ratchet wrench, and at the same time, they want to be able to easily remove the socket connector when they want to change to a different size.

[0003] Most socket joints on the market can be pulled directly from a ratchet wrench without requiring a reliable / lock-in. Popular designs are ball-pawl connections and snap ring connections. These designs do not provide a reliable and secure engagement between the socket joint and the ratchet wrench.

[0004] Furthermore, the socket connector is cumbersome to unlock after being engaged with the ratchet wrench, causing many inconveniences for the user. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a socket connector for a ratchet wrench, including a first end and a second end opposite to the first end. The first end is constructed as a hollow sleeve. The hollow sleeve includes a body, and a hole is provided on the outer wall of the body. A spherical body is accommodated in the hole. A locking pin is arranged in the hollow sleeve. The locking pin has a flange, a first region provided on the side of the flange facing the first end, and a second region provided on the other side of the flange facing the second end. In the natural state of the socket connector, the spherical body protrudes from the hole and exceeds the edge of the outer wall of the body. The spherical body is used to cooperate with a recess provided on the inner wall of the central hole of the ratchet wrench head, so that the hollow sleeve of the socket connector is locked to the ratchet wrench. According to the present invention, the socket connector only requires inserting the hollow sleeve of the socket connector into the central hole of the ratchet wrench head, and engaging and locking the spherical body of the socket connector with the recessed portion on the inner wall of the central hole of the ratchet wrench head. This achieves a secure and reliable lock between the socket connector and the ratchet wrench. During unlocking, applying a certain external force to the locking pin of the socket connector causes the spherical body of the socket connector to disengage from the recessed portion on the inner wall of the central hole of the ratchet wrench head, thus completing the unlocking operation. Therefore, the socket connector of the present invention is convenient to operate and provides a secure and reliable engagement with the ratchet wrench, and is also convenient to operate during unlocking.

[0006] In one embodiment, during the locking process of the socket connector and the ratchet wrench, the spherical body moves between the flange and the second zone. Preferably, during the locking process of the socket connector and the ratchet wrench, the spherical body is initially located in a position locked with the flange. As the socket connector is inserted forward into the head of the ratchet wrench, the spherical body gradually moves from the flange to the second zone until it engages and locks with a recess provided on the inner wall of the center hole of the ratchet wrench head. Then, the locking pin moves backward under the action of force, so that the spherical body is once again located in a position locked with the flange.

[0007] In one embodiment, during the unlocking process of the socket connector and the ratchet wrench, the spherical body moves between the flange and the first zone. Preferably, during the unlocking process of the socket connector and the ratchet wrench, the user first applies a certain force to the upper end face (i.e., the head) of the locking pin in the direction of the second end of the socket connector, causing the locking pin to move forward in the direction of the force and align the locking pin with the spherical body. In this case, the spherical body disengages from the recess provided on the inner wall of the central hole of the ratchet wrench head and enters downward into the first zone, thus unlocking the socket connector and the ratchet wrench. As the user pulls the socket connector out of the ratchet wrench, the locking pin moves again in the opposite direction to the force (i.e., towards the first end of the socket connector) under the action of the reaction force, causing the spherical body to be locked with the flange again.

[0008] In one embodiment, a first elastic system connected to the spherical body is further included. The first elastic system includes a first spring, one end of which is connected to the spherical body and the other end to the body of the hollow sleeve. In one embodiment, as the spherical body moves from the flange of the locking pin into the second zone, the first elastic system is biased and thus applies a biasing force to the spherical body. In one embodiment, as the sleeve connector moves to a position where the spherical body is radially aligned with the recess of the ratchet wrench, the spherical body moves into the recess under the biasing force of the first elastic system and engages with the recess, locking the hollow sleeve of the sleeve connector to the ratchet wrench. Therefore, during the locking process of the sleeve connector and the ratchet wrench, the spherical body is initially in a position locked with the flange. As the sleeve connector is inserted forward into the head of the ratchet wrench, the edge of the central hole in the head of the ratchet wrench causes the spherical body to move backward along the hole. During this process, the first elastic system connected to the spherical body is compressed due to the backward movement of the spherical body. Subsequently, the spherical body unlocks from the flange and gradually moves into the second zone until it engages with and locks against the recess on the inner wall of the center hole of the ratchet wrench head. At this point, the body of the sleeve coupling and the locking pin move backward under the biasing force of the first elastic system, so that the spherical body is once again locked to the flange.

[0009] In one embodiment, the spherical body is connected to the first spring via a control ring. In this case, the socket coupling can be more securely locked to the head of the ratchet wrench.

[0010] In one embodiment, the lower end of the locking pin is connected to a second elastic system, which includes a spring. One end of the second elastic system is connected to the lower end of the locking pin, and the other end is connected to the body of the hollow sleeve. In one embodiment, during the unlocking of the sleeve coupling with the ratchet wrench, as the locking pin is subjected to an external force toward the second end of the sleeve coupling and thus moves toward the second end, the spherical body moves from the flange of the locking pin into a first region, and the second elastic system is biased and thus applies a biasing force to the locking pin. Therefore, during the unlocking process of the socket connector and the ratchet wrench, the user first applies a certain force to the upper end face (i.e., the head) of the locking pin, causing the locking pin to move forward in the direction of the force. This causes the second elastic system connected to the locking pin to be biased, thus applying a certain biasing force to the locking pin. Further, when the locking pin moves to the first area of ​​the locking pin and aligns with the spherical body, the spherical body disengages from the recess provided on the inner wall of the central hole of the ratchet wrench head and enters the first area downwards, thus unlocking the socket connector and the ratchet wrench. As the user pulls the socket connector out of the ratchet wrench, the locking pin moves upwards under the reaction force of the second elastic system, causing the spherical body to be locked with the flange again.

[0011] In one embodiment, the first and / or second zones are U-shaped or L-shaped spaces and are defined by a plurality of walls of locking pins.

[0012] In one embodiment, a stop ring is provided on the inner wall of the hollow sleeve body near the upper opening, and a shoulder is provided at the head position of the locking pin. The arrangement and cooperation of the stop ring and the shoulder prevent the locking pin from moving excessively outward from the hollow sleeve.

[0013] In one embodiment, the hole is oblong and has a first side and a second side opposite to the first side, with the spherical body abutting against the first side in the natural state of the socket connector. Therefore, in the natural state of the socket connector, i.e., before the socket connector is loaded into the head of the ratchet wrench, the spherical body abuts against the first side of the oblong hole and is locked with the flange of the locking pin to prevent the spherical body from leaving the first side of the oblong hole. During the locking process of the socket connector with the ratchet wrench, as the socket connector is inserted forward into the head of the ratchet wrench, the edge of the central hole of the ratchet wrench head causes the spherical body to move away from the first side and along the oblong hole towards the second side.

[0014] In one embodiment, the hollow sleeve is a hexagonal sleeve.

[0015] According to the present invention, the socket connector only requires inserting the hollow sleeve of the socket connector into the central hole of the ratchet wrench head, and engaging and locking the spherical body of the socket connector with the recessed portion on the inner wall of the central hole of the ratchet wrench head. This achieves a secure and reliable lock between the socket connector and the ratchet wrench. During unlocking, applying a certain external force to the locking pin of the socket connector causes the spherical body of the socket connector to disengage from the recessed portion on the inner wall of the central hole of the ratchet wrench head, thus completing the unlocking operation. Therefore, the socket connector of the present invention is convenient to operate and provides a secure and reliable engagement with the ratchet wrench, and is also convenient to operate during unlocking. Attached Figure Description

[0016] One or more embodiments are illustrated by way of example in the corresponding accompanying drawings. These illustrative descriptions do not constitute a limitation on the embodiments. Elements having the same reference numerals in the drawings represent similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0017] Figure 1 This is a schematic diagram of the socket connector and ratchet wrench according to the present invention;

[0018] Figure 2 This is a cross-sectional view of the sleeve connector according to the present invention;

[0019] Figure 3 This is a schematic diagram of the sleeve coupling according to the present utility model;

[0020] Figure 4A , 4B 4C and 4D are schematic diagrams illustrating various locking states of the socket coupling and the head of the ratchet wrench according to this utility model.

[0021] Figure 5A , 5B Figures 5C and 5C are schematic diagrams illustrating various unlocking states of the socket coupling and the head of the ratchet wrench according to this utility model. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the various embodiments of this utility model will be described in detail below with reference to the accompanying drawings. The following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely to illustrate selected embodiments of the utility model. The technical solutions claimed by this utility model can be implemented even without these technical details and various variations and modifications based on the following embodiments.

[0023] In the description of this utility model, the terms "first," "second," and "third" are used only to describe features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the sequential relationship of the indicated technical features. Furthermore, in the description of this utility model, the terms "front" and "rear," "left" and "right," and "upper" are used only to describe features and should not be construed as indicating or implying the positional relationship of these technical features.

[0024] In the description of this utility model, unless otherwise explicitly defined, terms such as "provided," "set up," "connected," and "linked" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0025] like Figure 1 As shown, this utility model relates to a socket connector 10 for a ratchet wrench, more specifically, the socket connector 10 is used to insert into and lock with the center hole 201 of the head 20 of the ratchet wrench. Figure 2 and Figure 3 As shown, the socket connector 10 for a ratchet wrench according to the present invention includes a first end and a second end opposite to the first end, the first end being constructed as a hollow socket 100. The hollow socket 100 is preferably constructed as a hexagonal socket; however, other shapes are also readily conceivable. The hollow socket 100 includes a body 11, the outer wall of which is provided with a hole 16. The hole 16 is oblong in shape; however, other suitable shapes are also readily conceivable. A spherical body 13 is accommodated within the hole 16. The shape and size of the spherical body 13 correspond to the shape and size of the hole 16, allowing the spherical body 13 to move within the hole 16 without moving outside the hole 16. Preferably, the hole 16 is oblong and has a first side 161 and a second side 162 opposite to the first side, the spherical body 13 abutting against the first side 161 in its natural state.

[0026] A locking pin 12 is arranged within the hollow sleeve 100, the locking pin 12 having a flange 121. Preferably, the spherical body 13 is locked in place by the flange 121 of the locking pin 12 (i.e., abutting the first side 161 of the hole 16) in the natural state of the sleeve connector 10. The locking pin 12 also includes a first region 131 disposed on the side of the flange 121 facing the first end and a second region 132 disposed on the other side of the flange 121 facing the second end. Preferably, the first region 131 and / or the second region 132 are U-shaped or L-shaped spaces and are defined by a plurality of walls of the locking pin 12. Preferably, the first region 131 is approximately U-shaped, i.e., defined by a plurality of walls: a first wall extending radially inward from the flange 121 in a direction inclined to the longitudinal axis of the locking pin 12 toward the first end, followed by a second wall extending parallel to the longitudinal axis of the locking pin 12 toward the first end, and a third wall extending radially outward from the second wall in a direction inclined to the longitudinal axis of the locking pin 12 toward the first end. Preferably, the second region 132 is approximately L-shaped, defined by a plurality of walls: a fourth wall extending radially inward from the flange 121 along a longitudinal axis substantially perpendicular to the locking pin 12, followed by a fifth wall extending parallel to the longitudinal axis of the locking pin 12 toward the second end.

[0027] In its natural state, the spherical body 13 protrudes from the hole 16 and extends beyond the edge of the outer wall of the body 11. The spherical body 13 engages with a recess 22 on the inner wall of the center hole 201 of the ratchet wrench head 20, thereby locking the hollow sleeve 100 of the socket connector 10 into the ratchet wrench. In other words, the spherical body 13 and the recess 22 on the inner wall of the center hole 201 of the ratchet wrench head 20 are matched in shape and size, such that when the spherical body 13 is located in and engages with the recess 22, the hollow sleeve 100 of the socket connector 10 is locked into the ratchet wrench.

[0028] Therefore, according to the socket connector 10 of this utility model, it is only necessary to insert the hollow sleeve 100 of the socket connector 10 into the central hole 201 of the head 20 of the ratchet wrench and engage and lock the spherical body 13 of the socket connector 10 with the recess 22 provided on the inner side wall of the central hole 201 of the head 20 of the ratchet wrench, so that the socket connector 10 and the ratchet wrench are locked together. During the unlocking process, it is only necessary to apply a certain external force to the locking pin of the socket connector 10 so that the spherical body 13 of the socket connector 10 disengages from the recess 22 provided on the inner side wall of the central hole 201 of the head 20 of the ratchet wrench, so that the unlocking operation of the socket connector and the ratchet wrench can be completed. Therefore, the socket connector of this utility model is convenient to operate and has a firm and reliable engagement when engaging with the ratchet wrench, and is also convenient to operate during the unlocking process.

[0029] In one embodiment, the sleeve coupling 10 according to the present invention further includes a first elastic system connected to the spherical body 13, the first elastic system comprising a first spring 15. In a first embodiment, one end of the first elastic system is connected to the spherical body 13, and the other end is connected to the body 11 of the hollow sleeve 100, preferably to the inner sidewall or bottom wall of the body 11 of the hollow sleeve 100. The spherical body 13 is connected to the first elastic system including the first spring such that when the spherical body 13 deviates from its free state position (i.e., the position locked with the flange 121 of the locking pin 12), the first elastic system deforms, thereby generating a biasing force that tends to restore the spherical body 13 to its initial position locked with the flange 121 of the locking pin 12. In one embodiment, as the spherical body 13 moves from the flange 121 of the locking pin 12 into the second region 132, the first elastic system is biased and thus applies a certain biasing force to the spherical body 13. In one embodiment, when the socket connector 10 moves to a position where the spherical body 13 is radially aligned with the recess 22 of the ratchet wrench, the spherical body 13 moves into and engages with the recess 22 under the biasing force of the first elastic system, thereby locking the hollow sleeve 100 of the socket connector 10 into the ratchet wrench. In one embodiment, preferably, the spherical body 13 is connected to the first elastic system including the first spring 15 via a control ring 17; in this case, the spherical body 13 directly contacts and is controlled by the control ring 17.

[0030] In one embodiment, the sleeve coupling 10 according to the present invention further includes a second elastic system connected to the lower end of the locking pin 12. Preferably, the second elastic system includes a spring 14. In one embodiment, one end of the second elastic system is connected to the lower end of the locking pin 12, and the other end is connected to the body 11 of the hollow sleeve 100, preferably to the inner sidewall or bottom wall of the body 11 of the hollow sleeve 100. The locking pin 12 is connected to the second elastic system including the second spring such that when the locking pin 12 deviates from its free state position, the second elastic system deforms, thereby generating a biasing force that tends to restore the locking pin 12 to its initial free state position. In one embodiment, during the unlocking of the sleeve coupling 10 with the ratchet wrench, when the locking pin 12 is subjected to an external force toward the second end and thus moves toward the second end, the second elastic system is biased and thus applies a certain biasing force toward the first end to the locking pin 12.

[0031] Figure 4A , 4BFigures 4C and 4D show schematic diagrams illustrating various states in which the socket connector 10 and the head of the ratchet wrench are locked according to the present invention. During the locking process of the socket connector 10 and the ratchet wrench, the spherical body 13 moves between the flange 121 of the locking pin 12 and the second region 132. Preferably, during the locking process of the socket connector and the ratchet wrench, the spherical body 13 is initially located in a position locked to the flange 121 of the locking pin 12, i.e., abutting the first side 161 of the hole 16; as the socket connector 10 is inserted forward into the central hole 201 of the head 20 of the ratchet wrench, the edge of the central hole 201 of the head 20 applies a certain force to the spherical body 13, causing the spherical body 13 to deviate from the position locked to the flange 121 of the locking pin 12 and move towards the second side 162 of the hole 16. Gradually, the spherical body 13 will enter the central hole 201 of the head 20 and move to abut the second side 162 of the hole 16, as shown below. Figure 4A and 4B As shown, as the socket connector 10 is further inserted forward into the center hole 201 of the ratchet wrench head 20, the spherical body 13 gradually moves from a position locked with the flange 121 of the locking pin 12 into the second region 132 of the locking pin 12. At this time, the first elastic system connected to the spherical body 13 is biased and thus applies a certain biasing force to the spherical body 13. As the socket connector 10 moves to a position where the spherical body 13 is aligned radially with the recess 22 of the ratchet wrench, the spherical body 13 moves upward into the recess 22 under the action of the upward component of the biasing force of the first elastic system and engages with the recess 22, so that the hollow sleeve 100 of the socket connector 10 is locked to the ratchet wrench, as shown. Figure 4C As shown. In Figure 4C In the locked state, because the spherical body 13 abuts against the second side 162 of the hole 16 and locks and engages with the recess 22 of the ratchet wrench, the sleeve coupling 10 is restricted from further forward movement. Furthermore, because the spherical body 13 moves axially from the first side 161 of the hole 16 to the second side 162, the first elastic system connected to the spherical body 13 is compressed and a biasing force exists; with the sleeve coupling 10 restricted from further forward movement, the biasing force of the first elastic system causes the sleeve coupling 10 and the locking pin 12 to move backward as a whole, i.e., towards the second end, so that the spherical body 13 moves from the second region 132 to a position locked with the flange 121 of the locking pin 12, i.e., abutting against the first side 161 of the hole 16 again, as... Figure 4D As shown. In the case of including the control ring 17, the spherical body 13 is in direct contact with and controlled by the control ring 17, in which case the socket coupling 10 can be more reliably locked with the head 20 of the ratchet wrench.

[0032] Figure 5A , 5BFigures 5C and 5C are schematic diagrams illustrating various states in which the socket connector 10 and the head 20 of the ratchet wrench are unlocked according to this utility model. During the unlocking process of the socket connector 10 and the ratchet wrench, the user first applies a certain force towards the second end of the socket connector 10 to the upper end face of the locking pin 12, i.e., the head, causing the locking pin 12 to move forward (towards the second end of the socket connector 10) along the direction of the force. This biases the second elastic system connected to the locking pin 12, thus applying a certain biasing force to the locking pin. Further, when the locking pin 12 moves to the first region 131 of the locking pin 12 and aligns with the spherical body 13, the spherical body 13 disengages from the recess 22 provided on the inner wall of the central hole 201 of the ratchet wrench head 20 and enters downward into the first region 13, thereby unlocking the socket connector 10 and the ratchet wrench. Figure 5A As shown, as the user pulls the socket connector out of the ratchet wrench, the ball 13 moves within the center hole 201 of the ratchet wrench head 20, as... Figure 5B As shown. When the spherical body 13 moves out of the center hole 201 of the ratchet wrench head 20, the locking pin 12 moves toward the first end of the sleeve coupling 10 under the reaction force of the second elastic system, so that the spherical body 13 is once again locked to the flange 121 of the locking pin 12, that is, against the first side 161 of the hole 16, as shown. Figure 5C As shown.

[0033] In one embodiment, a stop ring 21 is provided on the inner wall of the body 11 of the hollow sleeve 100 near the upper opening 1211, and a shoulder 127 is provided at the head position of the locking pin 12. The arrangement and engagement of the stop ring 21 and the shoulder 127 prevent the locking pin 12 from moving excessively from the hollow sleeve toward the first end of the sleeve connector 10 during the locking process of the sleeve connector 10 with the head 20 of the ratchet wrench.

[0034] According to the present invention, the socket connector only requires inserting the hollow sleeve of the socket connector into the central hole of the ratchet wrench head, and engaging and locking the spherical body of the socket connector with the recessed portion on the inner wall of the central hole of the ratchet wrench head. This achieves a secure and reliable lock between the socket connector and the ratchet wrench. During unlocking, applying a certain external force to the locking pin of the socket connector causes the spherical body of the socket connector to disengage from the recessed portion on the inner wall of the central hole of the ratchet wrench head, thus completing the unlocking operation. Therefore, the socket connector of the present invention is convenient to operate and provides a secure and reliable engagement with the ratchet wrench, and is also convenient to operate during unlocking.

[0035] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A socket coupling (10) for a ratchet wrench, characterized in that, The device includes a first end and a second end opposite to the first end. The first end is constructed as a hollow sleeve (100). The hollow sleeve (100) includes a body (11). A hole (16) is provided on the outer wall of the body (11). A spherical body (13) is contained in the hole (16). A locking pin (12) is arranged inside the hollow sleeve (100). The locking pin (12) has a flange (121), a first region (131) disposed on the side of the flange (121) facing the first end, and a... In the second region (132) on the other side of the flange (121) facing the second end, the spherical body (13) protrudes from the hole (16) and extends beyond the edge of the outer wall of the body (11) in the natural state of the sleeve connector (10), and the spherical body (13) is used to cooperate with the recess (22) provided on the inner wall of the center hole (201) of the head (20) of the ratchet wrench, so that the hollow sleeve (100) of the sleeve connector (10) is locked to the ratchet wrench.

2. The sleeve coupling (10) according to claim 1, characterized in that, During the locking process of the sleeve connector (10) and the ratchet wrench, the sphere (13) moves between the flange (121) and the second zone (132).

3. The sleeve coupling (10) according to claim 1, characterized in that, During the process of unlocking the socket connector (10) with the ratchet wrench, the sphere (13) moves between the flange (121) and the first area (131).

4. The sleeve coupling (10) according to claim 1, characterized in that, It also includes a first elastic system connected to the sphere (13), the first elastic system including a first spring (15), one end of the first elastic system being connected to the sphere (13) and the other end being connected to the body (11) of the hollow sleeve (100).

5. The sleeve coupling (10) according to claim 4, characterized in that, As the sphere (13) moves from the flange (121) of the locking pin (12) into the second region (132), the first elastic system is biased and thus applies a certain biasing force to the sphere (13).

6. The sleeve coupling (10) according to claim 5, characterized in that, When the socket connector (10) moves to a position where the spherical body (13) is aligned radially with the recess (22) of the ratchet wrench, the spherical body (13) moves into the recess (22) under the biasing force of the first elastic system and engages with the recess (22), thereby locking the hollow sleeve (100) of the socket connector (10) into the ratchet wrench.

7. The sleeve coupling (10) according to claim 4, characterized in that, The sphere (13) is connected to the first spring (15) via a control ring (17).

8. The sleeve coupling (10) according to claim 1, characterized in that, The lower end of the locking pin (12) is connected to a second elastic system, which includes a spring (14). One end of the second elastic system is connected to the lower end of the locking pin (12), and the other end is connected to the body (11) of the hollow sleeve (100).

9. The sleeve coupling (10) according to claim 8, characterized in that, During the unlocking process of the socket connector (10) and the ratchet wrench, as the locking pin (12) is subjected to an external force toward the second end of the socket connector (10) and thus moves toward the second end, the spherical body (13) moves from the flange (121) of the locking pin (12) into the first region (131), and the second elastic system is biased and thus applies a certain biasing force to the locking pin (12).

10. The sleeve coupling (10) according to claim 1, characterized in that, The first region (131) and / or the second region (132) are U-shaped or L-shaped spaces and are defined by a plurality of walls of the locking pin (12).

11. The sleeve coupling (10) according to claim 1, characterized in that, The inner wall of the body (11) of the hollow sleeve (100) is provided with a stop ring (21) near the upper opening (1211), and the locking pin (12) is provided with a shoulder (127) at its head position.

12. The sleeve coupling (10) according to claim 1, characterized in that, The hole (16) is an oblong hole and has a first side (161) and a second side (162) opposite to the first side, and the sphere (13) abuts against the first side (161) in the natural state of the sleeve connector (10).

13. The sleeve coupling (10) according to claim 1, characterized in that, The hollow sleeve (100) is a hexagonal sleeve.

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