A quick-locating sleeve for removing and installing automotive fasteners

Abstract

This invention relates to the field of automotive repair auxiliary tools, and discloses a quick-positioning sleeve for disassembling and assembling automotive fasteners, comprising a cylindrical body, a fitting part, a drive connection part, and a temporary positioning component; the cylindrical body is a tubular structure; the fitting part is disposed at the front end of the cylindrical body, and a fitting cavity for fitting automotive fasteners is formed within the fitting part; compared with the prior art, this application sets the sleeve as a tubular structure that can be independently fitted onto automotive fasteners, and sets a temporary positioning component within the cylindrical body, so that the cylindrical body can be kept in a predetermined position relative to the automotive fasteners when no twisting tool is connected, thereby achieving the effect of separating the positioning and fitting action of the sleeve from the twisting action of the twisting tool, reducing the misalignment and partial fitting problems caused when the twisting tool drives the sleeve to be aligned as a whole.

Description

Technical Field

[0001] This invention relates to the field of automotive repair auxiliary tools, specifically to a quick-positioning sleeve for disassembling and assembling automotive fasteners. Background Technology

[0002] During automotive repair, bolts or nuts are often installed at the connection points of wheel hubs, chassis, engine compartments, and brackets. When disassembling or assembling these fasteners, a socket is usually first mounted on a ratchet wrench, electric wrench, or pneumatic tool. Then, the wrench is moved close to the fastener by the torque wrench, so that the fitting cavity at the front end of the socket fits the bolt head or nut before tightening.

[0003] Existing sockets are mostly used as fittings for twisting tools, and their structural focus is usually on size adaptation, torque transmission, or extended operation. In actual operation, the overall length and weight of the socket increase after it is connected to the twisting tool, and the rear tool can easily cause the front socket to wobble. In positions with limited visibility or narrow space, it is difficult for the operator to control the insertion angle and depth of the front end of the socket independently.

[0004] Therefore, during the alignment process using the tool to move the socket, the socket is prone to contacting the bolt head or nut at an angle, or even only partially fitting before applying torque, leading to socket slippage and damage to the edges of the fasteners. For fasteners located in the engine compartment, inside the chassis skid plate, or inside the wheel hub holes, the removed nuts are also prone to falling out of the socket, affecting disassembly and assembly efficiency and maintenance reliability. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a quick-positioning sleeve for the installation and removal of automotive fasteners, aiming to alleviate the aforementioned problems to at least some extent.

[0006] The above-mentioned technical objective of the present invention is achieved through the following technical solution: A quick-positioning sleeve for assembling and disassembling automotive fasteners includes a sleeve body, a fitting part, a drive connection part, and a temporary positioning assembly. The cylindrical body has a tubular structure; The fitting part is located at the front end of the cylinder, and a fitting cavity for fitting automotive fasteners is formed inside the fitting part. The drive connection part is located at the rear end of the cylinder, and the drive connection part is used to connect with the twisting tool after the cylinder is fitted onto the automotive fastener. The temporary positioning component is disposed inside the cylinder. The temporary positioning component includes multiple positioning shafts spaced apart along the circumference of the fitting cavity. The multiple positioning shafts are used to contact the outer periphery of the automotive fastener when the cylinder is fitted onto the automotive fastener, so that the cylinder is held on the automotive fastener when no twisting tool is connected. The temporary positioning component can limit the fastener from sliding outward relative to the fitting.

[0007] Preferably, a connecting ring is slidably connected inside the cylinder, and a magnetic ring is connected to the inner wall of the connecting ring.

[0008] Preferably, the temporary positioning component further includes multiple sliding openings formed in the cylinder, a rack slidably connected in the sliding opening, the rack being connected to the connecting ring, a connecting frame provided in the cylinder, the positioning shaft being disposed on the connecting frame, a lead screw connected to the connecting frame, the lead screw being slidably connected to the cylinder and extending into the sliding opening, a threaded tube rotatably connected in the sliding opening, and a first gear meshing with the rack being connected to the threaded tube.

[0009] Preferably, a ratchet mechanism is provided between the positioning shaft and the connecting frame.

[0010] Preferably, the outer wall of the threaded tube is connected to a collar, and the outer wall of the collar is slidably connected to a plurality of wedge-shaped strips. A first spring is connected between the wedge-shaped strips and the collar. The collar is rotatably connected to the inside of the first gear, and the inner wall of the first gear has a plurality of wedge-shaped openings that are adapted to the wedge-shaped strips.

[0011] Preferably, a piston rod is connected to one side of the connecting ring, and a second spring is connected between the piston rod and the cylinder.

[0012] Preferably, the cylinder has a connecting cavity, the tail of the connecting cavity has a flow channel, the tail of the flow channel is connected to the head of the connecting cavity, the piston rod extends into the connecting cavity and is connected to a piston shaft that slides with the connecting cavity, the piston shaft is provided with a one-way valve, the flow channel is provided with a blocking element, and the connecting cavity and the flow channel are filled with liquid.

[0013] Preferably, the one-way valve includes a first passage opening on the piston shaft, a sliding valve sleeve is slidably connected in the first passage opening, a plurality of second passage openings are provided on the outer wall of the sliding valve sleeve, and a third spring is connected between the sliding valve sleeve and the first passage opening.

[0014] Preferably, the blocking component includes a fixing ring fixed within the flow channel, the fixing ring having a plurality of first communication ports, a blocking ring rotatably connected within the fixing ring, and the blocking ring having a second communication port communicating with the first communication ports.

[0015] Preferably, a limiting ring is rotatably connected to the end of the cylinder, a second gear is connected to the limiting ring, a connecting shaft extending to the limiting ring is connected to one side of the blocking ring, a third gear meshing with the second gear is connected to the connecting shaft, a limiting piece is connected to the fixing ring, an arc-shaped limiting opening is provided on the limiting piece, a connecting piece is connected to the connecting shaft, and a limiting rod that slides with the arc-shaped limiting opening is connected to the connecting piece.

[0016] In summary, the present invention has the following main beneficial effects: Compared with the prior art, this application sets the sleeve as a tubular structure that can be independently fitted onto the automotive fastener, and sets a temporary positioning component inside the sleeve, so that the sleeve can be kept in a predetermined position relative to the automotive fastener when the twisting tool is not connected. This achieves the effect of separating the positioning and fitting action of the sleeve from the twisting action of the twisting tool, reducing the skew and partial fitting problems caused when the twisting tool drives the sleeve to be aligned as a whole.

[0017] Meanwhile, the connecting ring, pushed by the automotive fastener, drives the rack, first gear, threaded tube, and lead screw to move, causing the positioning axis to move to the center of the fitting cavity and forming a circumferential contact extrusion force on the automotive fastener, thus achieving the effect of automatically enhancing the holding force during the fitting process; the ratchet mechanism restricts the reverse rotation of the positioning axis, so that the automotive fastener is stopped when sliding outward, reducing the possibility of the fastener coming out of the fitting cavity after disassembly.

[0018] In addition, the combination of a one-way valve, a blocking component, a piston shaft, and a second spring allows the automotive fasteners to be gradually retracted into the cylinder during disassembly and assembly, while also preventing the connecting ring from resetting prematurely and avoiding the second spring from pushing the fasteners out too early. After disassembly, the flow channel is opened, and the second spring can be used to push the connecting ring back to its original position, thus facilitating the removal of the disassembled fasteners. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a cross-sectional schematic diagram of the overall structure of the present invention; Figure 3 This is a schematic diagram of the connecting frame structure of the present invention; Figure 4 This is a schematic diagram of the ratchet mechanism structure of the present invention; Figure 5 This is a cross-sectional schematic diagram of the collar structure of the present invention; Figure 6 yes Figure 2 Enlarged schematic diagram of the local structure at point A; Figure 7 This is a cross-sectional schematic diagram of the piston shaft structure of the present invention; Figure 8 This is a cross-sectional schematic diagram of the fixing ring structure of the present invention; Figure 9 This is a schematic diagram of the structure of the limiting piece and the connecting piece of the present invention.

[0020] Figure label: 1. Cylinder; 2. Fitting part; 3. Drive connection part; 4. Fitting cavity; 5. Positioning shaft; 6. Connecting ring; 7. Magnetic ring; 8. Sliding opening; 9. Rack; 10. Connecting frame; 11. Lead screw; 12. Threaded tube; 13. First gear; 14. Ratchet mechanism; 15. Collar; 16. Wedge bar; 17. First spring; 18. Wedge opening; 19. Piston rod; 20. Second spring; 21. Connecting cavity; 22. Flow channel 23. Piston shaft; 24. One-way valve; 25. Blocking element; 26. First passage port; 27. Sliding valve sleeve; 28. Second passage port; 29. ​​Third spring; 30. Retaining ring; 31. First connecting port; 32. Blocking ring; 33. Second connecting port; 34. Limiting ring; 35. Second gear; 36. Connecting shaft; 37. Third gear; 38. Limiting piece; 39. Arc-shaped limiting port; 40. Connecting piece; 41. Limiting rod. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] refer to Figures 1-9 A quick-locating sleeve for disassembling and assembling automotive fasteners is disclosed. This quick-locating sleeve is a sleeve fitting used in conjunction with a torque wrench and is not used as a handle itself. In use, the quick-locating sleeve is first placed on the automotive fastener, holding it in a predetermined position relative to the fastener. Then, the torque wrench is connected to the rear end of the quick-locating sleeve, and the torque wrench rotates the quick-locating sleeve, thereby completing the disassembly or installation of the automotive fastener.

[0023] Specifically, the quick-positioning sleeve includes a cylindrical body 1, a fitting part 2, a drive connection part 3, and a temporary positioning assembly. The cylindrical body 1 has a tubular structure, with the fitting part 2 located at the front end and the drive connection part 3 located at the rear end. A fitting cavity 4 is formed within the fitting part 2 for fitting automotive fasteners. The automotive fastener can be a nut or a bolt head from an automobile. The drive connection part 3 connects to a torque tool after the cylindrical body 1 has been fitted with the automotive fastener, allowing the torque tool to rotate the cylindrical body 1 via the drive connection part 3.

[0024] The temporary positioning component is disposed inside the cylinder 1. The temporary positioning component includes multiple positioning shafts 5, which are spaced apart along the circumference of the cylinder 1, so that the automotive fastener can contact the multiple positioning shafts 5 when it enters the fitting cavity 4.

[0025] In use, the operator first moves the cylinder 1 (without the twisting tool connected) to the automotive fastener and places the fitting part 2 onto the outer periphery of the automotive fastener. As the automotive fastener enters the fitting cavity 4, multiple positioning shafts 5 contact the outer periphery of the automotive fastener and exert circumferentially distributed contact pressure on it, allowing the cylinder 1 to remain on the automotive fastener without the twisting tool connected.

[0026] After the cylinder 1 is held on the automotive fastener, the operator connects the torque tool to the drive connection part 3. Since the cylinder 1 has already been fitted onto the automotive fastener via the fitting part 2 and held on by the temporary positioning component before connecting the torque tool, it is not necessary to move the cylinder 1 to locate the automotive fastener when connecting the torque tool. Subsequently, the torque tool drives the cylinder 1 to rotate via the drive connection part 3, and the cylinder 1 drives the automotive fastener to rotate via the fitting part 2, thereby completing the removal or installation of the automotive fastener.

[0027] When disassembling automotive fasteners, the temporary positioning component also restricts the outward sliding of the fasteners relative to the fitting portion 2. Specifically, after the automotive fasteners are loosened, the multiple positioning shafts 5 remain in contact with the outer periphery of the fasteners. The contact compressive force generated by the multiple positioning shafts 5 forms a retaining effect that prevents the automotive fasteners from coming out along the outlet direction of the fitting cavity 4, making it difficult for the automotive fasteners to slide out of the fitting cavity 4 on their own. Therefore, when disassembling in confined spaces such as the engine compartment, the inside of the chassis, or inside the wheel hub, the automotive fasteners can still be temporarily held by the quick-positioning sleeve after being removed, reducing the possibility of the automotive fasteners falling into confined spaces.

[0028] Based on the above embodiment, a connecting ring 6 is slidably connected inside the cylinder 1, and the connecting ring 6 can move relative to the cylinder 1 along the axial direction of the cylinder 1. A magnetic ring 7 is provided on the inner wall of the connecting ring 6. After the automotive fastener enters the fitting cavity 4, the magnetic ring 7 can generate a magnetic attraction effect on the automotive fastener, so that the automotive fastener is not only subjected to the contact extrusion force of multiple positioning shafts 5, but also to the adsorption and holding effect of the magnetic ring 7.

[0029] When disassembling the automotive fastener, the fastener remains within the fitting cavity 4 even after being loosened. At this time, multiple positioning shafts 5 restrict the fastener from sliding outwards relative to the fitting part 2, and the magnetic ring 7 provides auxiliary suction, preventing the fastener from easily detaching from the fitting cavity 4. The connecting ring 6 and the cylinder 1 are slidably connected, allowing the magnetic ring 7 to move slightly with the axial position of the fastener within the fitting cavity 4. This prevents the magnetic ring 7 from creating a rigid barrier to the fastener's entry depth when fixed, and also facilitates the maintaining suction fit when fasteners of different thicknesses or heights enter the fitting cavity 4.

[0030] Based on the above embodiments, the temporary positioning assembly further includes multiple sliding openings 8 formed within the cylinder 1. These sliding openings 8 are spaced apart circumferentially along the fitting cavity 4 and correspond to the positions of multiple positioning shafts 5. Each sliding opening 8 is slidably connected to a rack 9, which is connected to a connecting ring 6. This allows the connecting ring 6 to move axially along the cylinder 1, driving each rack 9 to move synchronously within its corresponding sliding opening 8. When the automotive fastener enters the fitting cavity 4 and continues to move inwards towards the cylinder 1, the automotive fastener can contact the connecting ring 6, causing the connecting ring 6 to undergo axial displacement relative to the cylinder 1.

[0031] The cylindrical body 1 is provided with multiple connecting brackets 10, which are arranged at intervals along the circumference of the fitting cavity 4 and correspond to the positions of multiple sliding openings 8. A positioning shaft 5 is mounted on the connecting bracket 10, facing the fitting cavity 4, and is used to move the connecting bracket 10 closer to or further away from the outer periphery of the automotive fastener. A lead screw 11 is connected to the connecting bracket 10, slidably connected to the cylindrical body 1, and extends into the corresponding sliding opening 8. The sliding direction of the lead screw 11 is set towards the center of the fitting cavity 4, so that when the lead screw 11 moves, it can drive the connecting bracket 10 closer to the center of the fitting cavity 4, thereby causing the positioning shaft 5 to press against the outer periphery of the automotive fastener.

[0032] A threaded tube 12 is rotatably connected within the sliding opening 8. The threaded tube 12 is sleeved around the lead screw 11 and threadedly engaged with it. A first gear 13 is connected to the threaded tube 12, and the first gear 13 meshes with a rack 9. When the connecting ring 6 moves axially along the cylinder 1 due to contact with the automotive fastener, the connecting ring 6 drives the rack 9 to move within the sliding opening 8. The rack 9, through meshing with the first gear 13, drives the first gear 13 to rotate, and the first gear 13 drives the threaded tube 12 to rotate synchronously. Because the lead screw 11 is slidably connected to the cylinder 1, the lead screw 11 cannot rotate with the threaded tube 12. When the threaded tube 12 rotates, it drives the lead screw 11 to slide radially along the cylinder 1 through the threaded engagement, thereby driving the connecting frame 10 and the positioning shaft 5 to move towards the center of the fitting cavity 4.

[0033] In use, the operator places the fitting part 2 of the cylinder 1 onto the outer periphery of the automotive fastener. After the automotive fastener enters the fitting cavity 4, it first contacts the connecting ring 6 and pushes the connecting ring 6 to move as it continues to be fitted. After the connecting ring 6 moves, it drives multiple racks 9 to move synchronously. Each rack 9 drives the corresponding first gear 13 and threaded tube 12 to rotate. Each threaded tube 12 then drives the connecting frame 10 to move towards the center of the fitting cavity 4 through the corresponding lead screw 11, so that multiple positioning shafts 5 press against the outer periphery of the automotive fastener from different circumferential positions. Thus, the action of the automotive fastener entering the fitting cavity 4 can be automatically converted into the clamping action of multiple positioning shafts 5 on the automotive fastener.

[0034] When the cylinder 1 is not connected to the twisting tool, the multiple positioning shafts 5 already exert a circumferentially distributed contact pressure on the outer periphery of the automotive fastener, allowing the cylinder 1 to remain on the automotive fastener. Subsequently, when the twisting tool is connected to the drive connection part 3, the cylinder 1 no longer needs to be driven by the twisting tool to locate the automotive fastener. When disassembling the automotive fastener, the multiple positioning shafts 5 provide a retaining effect on the outer periphery of the automotive fastener. When the automotive fastener is loosened, this retaining effect restricts the automotive fastener from sliding outward relative to the fitting part 2, reducing the possibility of the automotive fastener coming out of the fitting cavity 4.

[0035] Based on the above embodiment, a ratchet mechanism 14 is provided between the positioning shaft 5 and the connecting frame 10. The ratchet mechanism 14 is used to make the positioning shaft 5 rotate unidirectionally relative to the connecting frame 10. When the automotive fastener moves into the fitting cavity 4 relative to the fitting part 2, the outer periphery of the automotive fastener drives the positioning shaft 5 to rotate in the forward direction, so that the positioning shaft 5 enters the fitting cavity 4 in a rolling contact manner with the automotive fastener, reducing the resistance encountered by the automotive fastener as it continues to enter the fitting cavity 4.

[0036] During the rotation of the cylinder 1 driven by the twisting tool through the drive connection 3, the axial pressure applied by the operator to the twisting tool and the cylinder 1, the thread engagement between the automotive fastener and the threaded connection, and the reaction force on the end face of the automotive fastener will cause axial displacement of the automotive fastener relative to the cylinder 1. When the automotive fastener tends to slide outward relative to the fitting part 2 into the fitting cavity 4, the outer periphery of the automotive fastener applies a reverse force to the positioning shaft 5. At this time, the ratchet mechanism 14 restricts the positioning shaft 5 from rotating in the opposite direction, changing the positioning shaft 5 from a rolling state to a stop-contact state. The positioning shaft 5 cannot rotate in the opposite direction as the automotive fastener slides outward, thereby increasing the resistance when the automotive fastener moves outward relative to the fitting part 2, and restricting the automotive fastener from disengaging from the fitting cavity 4.

[0037] Based on the above embodiment, a collar 15 is connected to the outer wall of the threaded tube 12, and the collar 15 is rotatably connected to the inside of the first gear 13. Multiple wedge-shaped strips 16 are slidably connected to the outer wall of the collar 15, and a first spring 17 connects the wedge-shaped strips 16 to the collar 15. Multiple wedge-shaped openings 18 adapted to the wedge-shaped strips 16 are provided on the inner wall of the first gear 13. The first spring 17 is used to push the wedge-shaped strips 16 toward the inner wall of the first gear 13, allowing the wedge-shaped strips 16 to enter the corresponding wedge-shaped openings 18. After the wedge-shaped strips 16 enter the wedge-shaped openings 18, when the first gear 13 rotates, the collar 15 rotates due to the abutment between the wedge-shaped openings 18 and the wedge-shaped strips 16, and the collar 15 then drives the threaded tube 12 to rotate.

[0038] When the automotive fastener first enters the fitting cavity 4, it pushes the connecting ring 6, which in turn moves the rack 9, causing the first gear 13 to rotate. At this point, the positioning shaft 5 has not yet exerted significant contact pressure on the automotive fastener, the threaded tube 12 experiences minimal rotational resistance, the wedge-shaped strip 16 remains within the wedge-shaped opening 18, and the first gear 13 can drive the collar 15 and the threaded tube 12 to rotate accordingly. After the threaded tube 12 rotates, it drives the connecting bracket 10 to move towards the center of the fitting cavity 4 via the lead screw 11, causing the positioning shaft 5 to gradually approach and press against the outer periphery of the automotive fastener, thus creating a temporary positioning effect.

[0039] Once the positioning shaft 5 has established contact and pressure with the outer periphery of the automotive fastener, if the automotive fastener continues to displace further into the cylinder 1 within the fitting cavity 4, the connecting ring 6 will continue to drive the rack 9 to move. If the first gear 13 continues to forcefully rotate the threaded tube 12, the lead screw 11 will continue to push the connecting bracket 10 towards the center of the fitting cavity 4, causing the positioning shaft 5 to excessively compress the automotive fastener, thus hindering the axial movement of the automotive fastener relative to the cylinder 1. To avoid this problem, when the rotational resistance of the threaded tube 12 increases to the point where it can overcome the elastic force of the first spring 17, the sidewall of the wedge-shaped opening 18 pushes the wedge-shaped strip 16 to slide inward toward the collar 15, causing the wedge-shaped strip 16 to exit the wedge-shaped opening 18. After the wedge-shaped strip 16 exits the wedge-shaped opening 18, the first gear 13 can rotate relative to the collar 15, and the collar 15 and the threaded tube 12 no longer continue to rotate with the first gear 13.

[0040] With the above configuration, when the connecting ring 6 is displaced in the initial stage, it can drive the positioning shaft 5 to press against the automotive fastener through the rack 9, the first gear 13, the collar 15, and the threaded tube 12 to form a temporary position. Once the positioning shaft 5 has formed sufficient holding force, the subsequent displacement of the connecting ring 6 will not continue to force the threaded tube 12 to rotate, thereby preventing the positioning shaft 5 from continuing to press the automotive fastener inward. In other words, this structure can achieve follow-up when clamping is needed, and release the follow-up after the clamping force reaches a certain level, allowing the automotive fastener to continue moving into the fitting cavity 4 without being excessively resisted by the positioning shaft 5.

[0041] Based on the above embodiment, a piston rod 19 is connected to the side of the connecting ring 6 away from the fitting part 2. The piston rod 19 is slidably connected to the cylinder 1 along the axial direction of the cylinder 1. A second spring 20 is connected between the piston rod 19 and the cylinder 1. When the automotive fastener enters the fitting cavity 4 and touches the connecting ring 6, the connecting ring 6 drives the piston rod 19 to move relative to the cylinder 1 into the cylinder 1, compressing the second spring 20. At this time, the displacement of the connecting ring 6 can drive the rack 9 to move, and through the rack 9, the first gear 13, the threaded tube 12, and the lead screw 11, drive the positioning shaft 5 to press against the outer periphery of the automotive fastener.

[0042] After the automotive fastener is removed and moves away from its original installation position along with the cylinder 1, the second spring 20 releases its elastic force, causing the piston rod 19 and the connecting ring 6 to move towards the fitting part 2. As the connecting ring 6 moves, it pushes the automotive fastener located within the fitting cavity 4, causing it to move towards the outlet of the fitting cavity 4, thus facilitating the operator to remove the removed automotive fastener from the fitting cavity 4.

[0043] Based on the above embodiment, a connecting cavity 21 is provided on the cylinder 1, extending axially along the cylinder 1. A flow channel 22 is provided at the tail end of the connecting cavity 21, and the tail end of the flow channel 22 communicates with the head end of the connecting cavity 21, so that the flow channel 22 can form a bypass fluid path between the head and tail ends of the connecting cavity 21. A piston rod 19 extends into the connecting cavity 21 and is connected to a piston shaft 23, which slides in conjunction with the connecting cavity 21. A one-way valve 24 is provided on the piston shaft 23, and the connecting cavity 21 and the flow channel 22 are filled with liquid.

[0044] Furthermore, a blocking element 25 is provided within the flow channel 22, which can switch between an open state and a blocked state. When the blocking element 25 is in the open state, the liquid in the connecting cavity 21 can flow through the flow channel 22 between the head and tail of the connecting cavity 21, allowing the piston shaft 23 to move back within the connecting cavity 21. When the blocking element 25 is in the blocked state, the flow channel 22 is blocked, and the liquid cannot flow through the flow channel 22 between the head and tail of the connecting cavity 21. At this time, the liquid can only flow in a predetermined direction through the one-way valve 24 on the piston shaft 23.

[0045] In use, the automotive fastener enters the fitting cavity 4 and pushes the connecting ring 6. The connecting ring 6 drives the piston rod 19 and piston shaft 23 to move relative to the connecting cavity 21. As the piston shaft 23 moves, the liquid on one side of the connecting cavity 21 is compressed and flows to the other side of the connecting cavity 21 through the one-way valve 24, allowing the piston shaft 23 to move with the connecting ring 6. Thus, the automotive fastener can gradually enter the fitting cavity 4, and the connecting ring 6 can also be displaced as the automotive fastener enters, preventing liquid obstruction from affecting the insertion of the automotive fastener.

[0046] When the quick-positioning sleeve is fitted onto the automotive fastener, the blocking element 25 is in a blocked state, and the flow channel 22 is closed. At this time, if the piston shaft 23 continues to move in the direction in which the automotive fastener enters the fitting cavity 4, the liquid can still flow through the one-way valve 24, and the piston shaft 23 can continue to move with the connecting ring 6. However, when the second spring 20 attempts to push the piston rod 19 and the piston shaft 23 to return to their reverse position, the one-way valve 24 restricts the reverse flow of the liquid, and the flow channel 22 is blocked, so the liquid cannot flow back through the bypass fluid path. Because the liquid is incompressible, the reverse displacement of the piston shaft 23 is restricted, thereby preventing the connecting ring 6 from prematurely returning to its original position towards the fitting part 2 during disassembly.

[0047] With the above configuration, the automotive fastener can gradually be retracted into the fitting cavity 4 during the disassembly process, and the connecting ring 6 can also move accordingly; however, before the fastener is removed from its installation position, the second spring 20 will not directly push the connecting ring 6 to eject the fastener from the fitting cavity 4. In other words, this structure allows the fastener to gradually enter the cylinder 1 while restricting the reverse reset of the connecting ring 6, thereby preventing the reset force of the second spring 20 from causing the fastener to come out prematurely.

[0048] After the automotive fastener is removed and moves away from its installation position along with the cylinder 1, the operator switches the blocking element 25 to the open state, reconnecting the flow channel 22 to the head and tail of the connecting cavity 21. At this time, the second spring 20 can push the piston rod 19 and piston shaft 23 to move in the opposite direction, allowing the liquid in the connecting cavity 21 to flow back through the flow channel 22, thus freeing the piston shaft 23 from liquid lock-in. The piston rod 19 drives the connecting ring 6 to move towards the fitting part 2, and the connecting ring 6 pushes the automotive fastener located in the fitting cavity 4 outward, thereby facilitating the removal of the automotive fastener from the fitting cavity 4.

[0049] Based on the above embodiment, the one-way valve 24 includes a first passage 26 formed on the piston shaft 23, which penetrates the piston shaft 23, allowing liquid to flow through the first passage 26 on both sides of the piston shaft 23. A sliding valve sleeve 27 is slidably connected within the first passage 26, and the sliding valve sleeve 27 is movable relative to the piston shaft 23 along the extending direction of the first passage 26. A plurality of second passages 28 are formed on the outer wall of the sliding valve sleeve 27, and the plurality of second passages 28 are spaced apart circumferentially along the sliding valve sleeve 27. A third spring 29 is connected between the sliding valve sleeve 27 and the first passage 26, and the third spring 29 is used to keep the sliding valve sleeve 27 in a closed position.

[0050] When the automotive fastener enters the fitting cavity 4 and pushes against the connecting ring 6, the connecting ring 6 drives the piston shaft 23 to move within the connecting cavity 21 via the piston rod 19. At this time, the liquid on one side of the piston shaft 23 is compressed and acts on the sliding valve sleeve 27. The liquid pressure overcomes the elastic force of the third spring 29 and pushes the sliding valve sleeve 27 to move, making the second passage port 28 connect with the first passage port 26. The liquid can then flow through the first passage port 26 and the second passage port 28 to the other side of the piston shaft 23. Thus, the piston shaft 23 can move with the connecting ring 6, allowing the automotive fastener to gradually enter the fitting cavity 4.

[0051] When the second spring 20 attempts to push the piston rod 19 and piston shaft 23 to reverse reset, the liquid on the other side of the piston shaft 23 applies reverse pressure to the sliding valve sleeve 27. At this time, the sliding valve sleeve 27 returns to the closed position under the action of the third spring 29 and the liquid pressure, causing the second passage 28 to be misaligned with the first passage 26, and the liquid cannot flow in reverse through the one-way valve 24. If the flow channel 22 is also blocked by the blocking member 25, the liquid cannot flow back through the flow channel 22 either, and the reverse movement of the piston shaft 23 is restricted by the liquid, thereby preventing the connecting ring 6 from resetting prematurely towards the fitting part 2.

[0052] Based on the above embodiments, the blocking member 25 includes a fixing ring 30 fixed within the flow channel 22. The fixing ring 30 is fixed relative to the cylinder 1, preventing it from rotating with the liquid flow or the piston shaft 23. The fixing ring 30 has multiple first connecting ports 31 spaced apart circumferentially. A blocking ring 32 is rotatably connected within the fixing ring 30, and the blocking ring 32 is rotatable relative to the fixing ring 30. The blocking ring 32 has multiple second connecting ports 33, which correspond in position to the multiple first connecting ports 31.

[0053] When the blocking ring 32 rotates to the connecting position, the second connecting port 33 aligns with the first connecting port 31, allowing the liquid in the flow channel 22 to flow sequentially through the first connecting port 31 and the second connecting port 33, thus connecting the head and tail of the connecting cavity 21 through the flow channel 22. At this time, the piston shaft 23 can move in the opposite direction under the action of the second spring 20, allowing the liquid to flow back through the flow channel 22, and the connecting ring 6 can reset towards the fitting part 2, so as to push the disassembled automotive fastener out of the fitting cavity 4.

[0054] When the blocking ring 32 rotates to the blocking position, the second connecting port 33 is misaligned with the first connecting port 31. The fixing ring 30 and the blocking ring 32 together block the flow channel 22, preventing liquid from flowing between the head and tail of the connecting cavity 21 through the flow channel 22. At this time, if the automotive fastener continues to move into the fitting cavity 4 and pushes the connecting ring 6, the piston shaft 23 can still move in the direction allowed by the one-way valve 24, allowing the automotive fastener to gradually be housed in the fitting cavity 4. However, when the second spring 20 attempts to push the piston rod 19 and the piston shaft 23 to return to their reverse position, the reverse displacement of the piston shaft 23 is restricted by the liquid because the flow channel 22 is blocked and the one-way valve 24 restricts the reverse flow of liquid, thus preventing the connecting ring 6 from prematurely pushing the automotive fastener out of the fitting cavity 4.

[0055] With the above configuration, the blocking member 25 can open and close the flow channel 22 by rotating the blocking ring 32 relative to the fixed ring 30. During the sleeve installation and disassembly process, the blocking ring 32 is in the blocking position to prevent the connecting ring 6 from prematurely resetting under the action of the second spring 20; after the automotive fastener is disassembled and leaves the installation position with the cylinder 1, the blocking ring 32 is in the connecting position to release the blockage of the flow channel 22, so that the second spring 20 can drive the piston rod 19 and the connecting ring 6 to reset, thereby pushing the automotive fastener out of the fitting cavity 4.

[0056] Based on the above embodiment, a limiting ring 34 is rotatably connected to the end of the cylinder 1. The limiting ring 34 is located on the outside of the cylinder 1, facilitating rotation by the operator from outside the cylinder 1. A second gear 35 is connected to the limiting ring 34, and a connecting shaft 36 is connected to one side of the blocking ring 32, extending to the limiting ring 34. A third gear 37 is connected to the connecting shaft 36, meshing with the second gear 35. When the operator rotates the limiting ring 34, the limiting ring 34 drives the second gear 35 to rotate. The second gear 35, through meshing with the third gear 37, drives the connecting shaft 36 to rotate, which in turn drives the blocking ring 32 to rotate relative to the fixed ring 30.

[0057] A limiting piece 38 is connected to the fixed ring 30, and the limiting piece 38 has an arc-shaped limiting opening 39. A connecting piece 40 is connected to the connecting shaft 36, and a limiting rod 41 is connected to the connecting piece 40. The limiting rod 41 slides within the arc-shaped limiting opening 39. When the connecting shaft 36 rotates, the connecting piece 40 rotates synchronously with the connecting shaft 36, and the limiting rod 41 slides along the arc-shaped limiting opening 39. When the limiting rod 41 abuts against one end of the arc-shaped limiting opening 39, the blocking ring 32 is in the communicating position, making the second communicating opening 33 communicate with the first communicating opening 31; when the limiting rod 41 abuts against the other end of the arc-shaped limiting opening 39, the blocking ring 32 is in the blocking position, making the second communicating opening 33 misaligned with the first communicating opening 31.

[0058] With the above configuration, the limiting ring 34 can serve as an external operating part of the blocking member 25, allowing the operator to control the opening or closing of the flow channel 22 without directly contacting the fixed ring 30 and the blocking ring 32 within the flow channel 22. The second gear 35, the third gear 37, and the connecting shaft 36 are used to transmit the rotation of the limiting ring 34 to the blocking ring 32. The limiting piece 38, the arc-shaped limiting port 39, the connecting piece 40, and the limiting rod 41 are used to limit the rotation range of the blocking ring 32, ensuring that the blocking ring 32 can accurately stop at the connecting position or the blocking position, preventing the blocking ring 32 from rotating excessively and causing the first connecting port 31 and the second connecting port 33 to be inaccurately aligned or not completely misaligned.

[0059] During use, when the quick-positioning sleeve is fitted onto the automotive fastener and during disassembly or installation, the operator rotates the limiting ring 34, causing the limiting rod 41 to move to one end of the arc-shaped limiting port 39 corresponding to the blocking position. At this time, the blocking ring 32 blocks the flow channel 22, and the connecting ring 6 can move into the cylinder 1 with the automotive fastener, but it is not easy to prematurely reset under the action of the second spring 20. After the automotive fastener is disassembled and leaves the installation position with the cylinder 1, the operator rotates the limiting ring 34 in the opposite direction, causing the limiting rod 41 to move to one end of the arc-shaped limiting port 39 corresponding to the connecting position. At this time, the first connecting port 31 and the second connecting port 33 are connected, the flow channel 22 is opened, the liquid can flow back, and the second spring 20 can drive the piston rod 19 and the connecting ring 6 to reset, thereby facilitating the removal of the automotive fastener from the fitting cavity 4.

[0060] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A quick positioning sleeve for dismounting of automotive fasteners, characterized in that, It includes a cylinder (1), a fitting part (2), a drive connection part (3), and a temporary positioning assembly; The cylindrical body (1) has a tubular structure; The fitting part (2) is located at the front end of the cylinder (1), and a fitting cavity (4) for fitting automotive fasteners is formed inside the fitting part (2). The drive connection part (3) is located at the rear end of the cylinder (1), and the drive connection part (3) is used to connect with the twisting tool after the cylinder (1) is fitted onto the automotive fastener. The temporary positioning component is disposed inside the cylinder (1). The temporary positioning component includes a plurality of positioning shafts (5) spaced apart circumferentially along the fitting cavity (4). The plurality of positioning shafts (5) are used to contact the outer periphery of the automotive fastener when the cylinder (1) is fitted onto the automotive fastener, so that the cylinder (1) is held on the automotive fastener without the twisting tool connected. The temporary positioning component can restrict the fastener from sliding outward relative to the fitting (2).

2. A quick positioning sleeve for disassembling and assembling the fastener of a vehicle as claimed in claim 1, wherein A connecting ring (6) is slidably connected inside the cylinder (1), and a magnetic ring (7) is connected to the inner wall of the connecting ring (6).

3. A quick positioning sleeve for disassembling and assembling the fastener of an automobile according to claim 2, characterized in that, The temporary positioning assembly also includes multiple sliding openings (8) opened in the cylinder (1), a rack (9) is slidably connected in the sliding opening (8), the rack (9) is connected to the connecting ring (6), a connecting frame (10) is provided in the cylinder (1), the positioning shaft (5) is provided on the connecting frame (10), a lead screw (11) is connected on the connecting frame (10), the lead screw (11) is slidably connected to the cylinder (1) and extends into the sliding opening (8), a threaded tube (12) is rotatably connected in the sliding opening (8), and a first gear (13) that meshes with the rack (9) is connected on the threaded tube (12).

4. A quick positioning sleeve for disassembling and assembling the fastener of an automobile according to claim 3, wherein, A ratchet mechanism (14) is provided between the positioning shaft (5) and the connecting frame (10).

5. A quick positioning sleeve for disassembling and assembling the fastener of an automobile according to claim 3, wherein, The outer wall of the threaded tube (12) is connected to a collar (15), and a plurality of wedge-shaped strips (16) are slidably connected to the outer wall of the collar (15). A first spring (17) is connected between the wedge-shaped strips (16) and the collar (15). The collar (15) is rotatably connected to the inside of the first gear (13). The inner wall of the first gear (13) is provided with a plurality of wedge-shaped openings (18) that are adapted to the wedge-shaped strips (16).

6. A quick positioning sleeve for disassembling and assembling the fastener of an automobile according to claim 2, wherein A piston rod (19) is connected to one side of the connecting ring (6), and a second spring (20) is connected between the piston rod (19) and the cylinder (1).

7. A quick positioning sleeve for disassembling and assembling the fastener of an automobile according to claim 6, wherein The cylinder (1) has a connecting cavity (21) and a flow channel (22) at the tail end of the connecting cavity (21). The tail end of the flow channel (22) is connected to the head end of the connecting cavity (21). The piston rod (19) extends into the connecting cavity (21) and is connected to a piston shaft (23) that slides with the connecting cavity (21). A one-way valve (24) is provided on the piston shaft (23). A blocking element (25) is provided in the flow channel (22). The connecting cavity (21) and the flow channel (22) are filled with liquid.

8. A quick positioning sleeve for disassembling and assembling the fastener of an automobile according to claim 7, characterized in that, The one-way valve (24) includes a first passage (26) opened on the piston shaft (23), a sliding valve sleeve (27) is slidably connected in the first passage (26), a plurality of second passages (28) are opened on the outer wall of the sliding valve sleeve (27), and a third spring (29) is connected between the sliding valve sleeve (27) and the first passage (26).

9. A quick-positioning sleeve for assembling and disassembling automotive fasteners according to claim 7, characterized in that, The blocking component (25) includes a fixing ring (30) fixed in the flow channel (22), the fixing ring (30) having a plurality of first communication ports (31), the fixing ring (30) having a blocking ring (32) rotatably connected inside the fixing ring (30), and the blocking ring (32) having a second communication port (33) communicating with the first communication ports (31).

10. A quick-positioning sleeve for assembling and disassembling automotive fasteners according to claim 9, characterized in that, The end of the cylinder (1) is rotatably connected to a limiting ring (34), and a second gear (35) is connected to the limiting ring (34). A connecting shaft (36) extending to the limiting ring (34) is connected to one side of the blocking ring (32). A third gear (37) meshing with the second gear (35) is connected to the connecting shaft (36). A limiting piece (38) is connected to the fixing ring (30), and an arc-shaped limiting opening (39) is provided on the limiting piece (38). A connecting piece (40) is connected to the connecting shaft (36), and a limiting rod (41) slidingly engaging with the arc-shaped limiting opening (39) is connected to the connecting piece (40).

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