Shaft taking device

Abstract

The utility model discloses a shaft taking device which comprises a shell, a telescopic piece, an elastic piece and at least one claw piece. The telescopic piece and the claw piece are installed on the shell, are in sliding fit and located beside the claw piece, and both protrude out of the front end of the shell. The elastic piece is arranged in the shell and provides elastic force for backward sliding of the telescopic piece. The diameter of the front end acting part of the telescopic piece is gradually increased from back to front, and the telescopic piece can selectively abut against the claw piece. The shaft taking device has a taking state and an in-out state, in the in-out state, the telescopic piece moves forwards to enable the acting part to be separated from the claw piece, and the acting part and the claw piece can penetrate through a bearing hole; in the taking state, the elastic piece enables the acting part to abut against the claw piece and extrude the claw piece to deform outwards, and therefore the bearing is hooked. When the roller skate bearing is switched to a taking state from an in-out state, the roller skate bearing can be taken out only by loosening the telescopic piece, automatically returning to enable the claw piece to expand to hook the bearing and pulling the shaft taking device, a switch does not need to be pressed, operation is simple and easy, and convenience is provided for replacement of the roller skate bearing.

Description

Technical Field

[0001] This utility model relates to the field of roller skating and is a special tool for disassembling and assembling roller skate bearings, particularly a bearing remover. Background Technology

[0002] With the increasing popularity of roller skating, the maintenance and care of roller skates is crucial for enthusiasts. Replacing the roller skate bearings is a common and necessary operation. With frequent use, roller skate bearings are prone to wear and damage. Timely replacement not only ensures the performance of the roller skates but also guarantees the safety of the user.

[0003] However, existing axle removal tools have many shortcomings in the scenario of replacing roller skate bearings. Traditional axle removal tools are often complex in structure and cumbersome in operation. The internal space of roller skates is relatively small, and when using these tools, operators need to perform complex adjustments and operations within a limited space. This not only consumes a lot of time and energy, but also requires a high level of skill from the operator. Improper operation can easily damage other parts of the roller skate, increasing maintenance costs.

[0004] Some axle removal tools are ill-suited to the special specifications and dimensions of roller skate bearings. Roller skate bearings are typically small and delicate, and some traditional tools cannot accurately grip and disassemble these small bearings, making disassembly extremely difficult and potentially damaging the bearings due to the inability to grip them effectively.

[0005] Furthermore, most existing bearing removal tools require users to continuously press a switch or maintain a specific posture to hold the bearing. During the process of replacing multiple bearings on roller skates, prolonged operation can easily lead to hand fatigue, affecting the accuracy and efficiency of the operation and reducing the overall roller skate maintenance experience.

[0006] Therefore, in the field of roller skates, there is an urgent need for a bearing remover specifically designed for the characteristics of roller skate bearings. It should have the advantages of simple structure, convenient operation, and strong versatility, so as to reduce the difficulty and cost of replacing roller skate bearings, improve maintenance efficiency, and allow roller skate enthusiasts to easily complete the daily maintenance of roller skates. Summary of the Invention

[0007] To address the aforementioned technical problems, this utility model provides a shaft remover, comprising a housing, a telescopic component, an elastic component, and at least one claw component. The telescopic component and the claw component are mounted on the housing, with the telescopic component slidingly engaged with the housing and located beside the claw component; both protrude from the front end of the housing. The elastic component is placed within the housing, providing a spring force for the telescopic component to slide backward. The diameter of the working portion at the front end of the telescopic component gradually increases from back to front, selectively engaging with the claw component. The shaft remover has two states: in use and out. In the out state, the telescopic component moves forward, disengaging the working portion from the claw component, allowing both to pass through the bearing hole. In the in use state, the elastic component causes the working portion to engage with the claw component and compress it outward, thereby hooking the bearing. Switching from the out state to the in use state simply requires releasing the telescopic component, which automatically returns to its original position, allowing the claw component to expand and hook the bearing. The shaft remover can then be pulled out without pressing a switch, making operation simple and easy, and providing convenience for replacing roller skate bearings.

[0008] The technical solution of this utility model is implemented as follows:

[0009] A shaft picker includes a housing, a telescopic member, an elastic member, and at least one claw member. The telescopic member and the claw member are mounted in the housing and are slidably engaged with the housing. The telescopic member is located beside the claw member, and both the claw member and the telescopic member protrude outward from the front end of the housing. The elastic member is disposed in the housing and always acts on the telescopic member. The elastic member is configured to provide a spring force to the telescopic member as it slides toward the rear end of the housing. The telescopic member includes an actuating portion located at its front end, which is configured to selectively abut against the claw member. The diameter of the actuating portion gradually increases from rear to front. The shaft picker includes a pick-up state and an in-and-out state. In the in-and-out state, the telescopic member slides forward in the housing and disengages the actuating portion from the claw member, allowing the telescopic member and the claw member to pass through a bearing hole. In the pick-up state, under the action of the elastic member, the actuating portion of the telescopic member abuts against the claw member, the actuating portion presses the claw member outward, and the claw member deforms outward to hook the bearing.

[0010] In the in / out state, the actuating part is not in contact with the claw. At this time, the overall thickness of the claw and the telescopic part can smoothly pass through the bearing hole and reach the end where the bearing is located inside the roller. When switching from the in / out state to the take-up state, simply release the telescopic part, allowing it to naturally return to its original position under the action of the elastic element. The actuating part then abuts against the claw from front to back. Due to the change in the diameter of the actuating part, the claw naturally expands outward, thereby hooking the bearing. The user can then pull out the bearing remover without pressing any switch on the bearing remover, making the operation simpler and easier. This reduces the difficulty and cost of replacing roller skate bearings, improves maintenance efficiency, and allows roller skate enthusiasts to easily perform daily maintenance on their roller skates.

[0011] Preferably, there is one claw component with a protruding hook at the front end, and the telescopic component also has symmetrically arranged hooks. In the in-and-out state, the two hooks are close to each other in the bearing diameter direction, allowing them to pass smoothly through the bearing hole. In the out-of-use state, the two hooks expand outward to hook the bearing.

[0012] Preferably, there are two claws connected by a ring-shaped connector, in which a telescopic member is inserted. A receiving groove is provided inside the housing, open at both the front and rear ends, with a limiting part at the front opening. The connector is positioned within the receiving groove, abutting against the limiting part. The limiting part extends radially inward, reducing the size of the front opening of the receiving groove to accommodate the connector. Under the action of the telescopic member, the two claws deform, increasing the maximum diameter of their upper claws to switch between an in / out state and a retrieval state.

[0013] Preferably, the connector is integrally formed with the two claws.

[0014] Preferably, the outer shell is made of plastic, while the connecting parts, telescopic parts, and two claws are all made of metal. The purpose of making the claws metal is mainly to prevent them from being damaged due to insufficient hardness when handling the bearings, thus affecting their service life.

[0015] Preferably, the claw has an inclined surface on the side facing the telescopic member, and the inclined surface slopes outward from back to front. The inclined surface is used to accommodate the change in the diameter of the actuating part, so that the telescopic rod moves backward more smoothly and without obstruction.

[0016] Preferably, the telescopic component also includes a main body, the diameter of which is smaller than the diameter of the actuating part.

[0017] Preferably, the housing has at least two handles extending to the left and right sides of the housing. The handles facilitate user operation and allow the user to press the buttons firmly; the user can place two fingers on the handles and press the button with their thumb to operate it.

[0018] Preferably, the front surface of the handle has anti-slip grooves. The anti-slip grooves are used to increase the friction of the handle and prevent fingers from slipping.

[0019] Preferably, the end of the handle furthest from the housing has a protrusion. The protrusion prevents fingers from slipping off the edge of the handle.

[0020] Preferably, the end of the handle furthest from the outer casing has a rope groove, located on the rear end face. The presence of the rope groove allows the axle puller to be attached to the roller skate's packaging bag for easy carrying; and since the rope groove is located on the rear end face of the handle, lifting the axle puller allows the packaging bag to be lifted as well. Furthermore, the contact area between the handle and the fingers is significantly larger than the contact area between the packaging bag's drawstring and the fingers, as the drawstring would constrict the fingers, while the handle would not.

[0021] Preferably, a button is provided at the rear end of the telescopic component. The button is slidably disposed in the housing and includes a connecting part and a pressing part. The connecting part is connected to the telescopic component, and the diameter of the pressing part is larger than the diameter of the connecting part. The larger diameter of the pressing part makes it easier for the user to press, while preventing pressure on the fingers when pressing.

[0022] The design starting point, concept, and beneficial effects of this utility model, which adopts the above technical solution, are as follows:

[0023] In the in / out state, the actuating part is not in contact with the claw. At this time, the overall thickness of the claw and the telescopic part can smoothly pass through the bearing hole and reach the end where the bearing is located inside the roller. When switching from the in / out state to the take-up state, simply release the telescopic part, allowing it to naturally return to its original position under the action of the elastic element. The actuating part then abuts against the claw from front to back. Due to the change in the diameter of the actuating part, the claw naturally expands outward, thereby hooking the bearing. The user can then pull out the bearing remover without pressing any switch on the bearing remover, making the operation simpler and easier. This reduces the difficulty and cost of replacing roller skate bearings, improves maintenance efficiency, and allows roller skate enthusiasts to easily perform daily maintenance on their roller skates. Attached Figure Description

[0024] Figure 1 This is a three-dimensional structural diagram of the shaft extractor in an embodiment of the present invention. Figure 1 ;

[0025] Figure 2 This is a three-dimensional structural diagram of the shaft extractor in an embodiment of the present invention. Figure 2 ;

[0026] Figure 3 This is a front view of the shaft taker in the taking-up state in an embodiment of the present invention;

[0027] Figure 4 This is a cross-sectional view of the shaft extractor in an embodiment of the present invention;

[0028] Figure 5 This is a three-dimensional structural diagram of the installation of the telescopic component and the connecting component in an embodiment of the present invention;

[0029] Figure 6 This is a front view of the shaft taker in the in-and-out state in an embodiment of the present invention;

[0030] Figure 7 This is a schematic diagram of the shaft taker entering the bearing hole in the in-and-out state in an embodiment of the present invention;

[0031] Figure 8 This is a schematic diagram showing the shaft taker engaging with the bearing in the take-up state in an embodiment of this utility model.

[0032] The reference numerals in the attached drawings are as follows: outer shell 1; receiving groove 11; limiting part 12; handle 13; anti-slip groove 131; protrusion 132; rope groove 133; telescopic part 2; actuating part 21; main body part 22; elastic part 3; claw part 4; hook claw 41; inclined surface 42; connector 5; button 6; connecting part 61; pressing part 62. Detailed Implementation

[0033] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0034] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0035] In the description of this utility model, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0036] The specific implementation of this utility model is as follows:

[0037] like Figure 1-4 As shown in Figure 6, this utility model provides a shaft taker, including a housing 1, a telescopic member 2, an elastic member 3, and at least one claw member 4. The telescopic member 2 and the claw member 4 are installed in the housing 1 and the telescopic member 2 is slidably engaged with the housing 1. The telescopic member 2 is located beside the claw member 4, and both the claw member 4 and the telescopic member 2 protrude outward from the front end of the housing 1. The elastic member 3 is disposed in the housing 1 and always acts on the telescopic member 2. The elastic member 3 is configured to provide a spring force for the telescopic member 2 to slide toward the rear end of the housing 1. The telescopic member 2 includes a working part located at its front end. The actuating part 21 is configured to selectively abut against the claw 4, and the diameter of the actuating part 21 gradually increases from back to front. The shaft picker includes a pick-up state and an in-and-out state. In the in-and-out state, the telescopic member 2 slides forward in the housing 1 and disengages the actuating part 21 from the claw 4 so that the telescopic member 2 and the claw 4 can pass through the bearing hole. In the pick-up state, under the action of the elastic member 3, the actuating part 21 of the telescopic member 2 abuts against the claw 4, the actuating part 21 pushes the claw 4 outward, and the claw 4 deforms to hook the bearing.

[0038] like Figure 7 , 8As shown, in the in / out state, the actuating part 21 does not contact the claw 4. At this time, the overall thickness of the claw 4 and the telescopic part 2 can smoothly pass through the bearing hole and reach the end where the bearing is located inside the roller skate. When switching from the in / out state to the take-out state, simply release the telescopic part 2, allowing it to naturally return to its original position under the action of the elastic part 3. The actuating part 21 then contacts the claw 4 from front to back. Due to the change in the diameter of the actuating part 21, the claw 4 naturally expands outward, thereby hooking the bearing. The user can then pull out the bearing remover without pressing any switch on the bearing remover, making the operation simpler and easier. This reduces the difficulty and cost of replacing roller skate bearings, improves maintenance efficiency, and allows roller skate enthusiasts to easily complete the daily maintenance of their roller skates.

[0039] Specifically, such as Figure 3-6 As shown, in this embodiment, there are two claws 4 connected by a connector 5. The connector 5 is annular, and the claws 4 are strip-shaped. The telescopic member 2 is inserted into the connector 5. The two claws 4 are located on both sides of the telescopic member 2 and are in close contact with the telescopic member 2 due to the self-deformation capability of the claws 4. The telescopic member 2 also includes a main body 22. The diameter of the main body 22 is smaller than the diameter of the action part 21, but the same as the minimum diameter of the action part 21. In the in-and-out state, the main body 22 abuts against the claws 4, and the two claws 4 are relatively close at this time. In the pick-up state, the action part 21 abuts against the claws 4 and pushes the two claws 4 outward, and the two claws 4 are relatively far apart. Each claw 4 has a protruding hook 41 at its front end. In the in-and-out state, since the two claws 4 are relatively close, the two hooks 41 are close to each other in the bearing diameter direction and can pass smoothly through the bearing hole. In the pick-up state, the distance between the two hooks 41 is relatively far, forming a larger diameter, which can hook the bearing and make it convenient for the user to remove the bearing. Of course, there can be only one claw 4. In addition to the outwardly protruding hook 41 at the front end of the claw 4, the telescopic member 2 is also symmetrically provided with hooks.

[0040] Furthermore, the connecting piece 5 is integrally formed with the two claw pieces 4. The outer shell 1 is made of plastic, while the connecting piece 5, the telescopic piece 2, and the two claw pieces 4 are all metal. Moreover, the claw pieces 4 and the telescopic piece 2 are made of the same metal material as the bearing. The purpose of making the claw pieces 4 metal is mainly to prevent them from being damaged due to insufficient hardness when handling the bearing, thus affecting their service life. The telescopic piece 2 needs to rub against the claw pieces 4 during operation, and a material with the same hardness as the claw pieces 4 can also ensure the service life of the telescopic piece 2. In addition, in order to make the relative movement between the telescopic rod action part 21 and the claw pieces 4 smoother, the claw pieces 4 are provided with an inclined surface 42 on the side facing the telescopic piece 2. The inclined surface 42 slopes outward from back to front. The inclined surface 42 is used to accommodate the diameter change of the action part 21, so that the telescopic rod moves backward more smoothly and without obstruction.

[0041] To be more specific, such as Figure 4As shown, a receiving groove 11 is provided inside the outer casing 1. The front and rear ends of the receiving groove 11 are open, and a limiting part 12 is provided at the opening of the front end of the receiving groove 11. The connecting member 5 is disposed in the receiving groove 11, and the connecting member 5 abuts against the limiting part 12. The limiting part 12 extends radially inward, making the opening at the front end of the receiving groove 11 smaller, so as to place the connecting member 5. The two claws 4 deform under the action of the telescopic member 2 to increase the maximum diameter of their upper hook claws 41, so as to switch between the entry / exit state and the pick-up state.

[0042] A button 6 is provided at the rear end of the telescopic member 2. The button 6 is slidably disposed in the outer casing 1 and is also located in the receiving groove 11. The button 6 includes a connecting part 61 and a pressing part 62. The connecting part 61 is connected to the telescopic member 2. The diameter of the pressing part 62 is larger than the diameter of the connecting part 61. The larger diameter of the pressing part 62 makes it easier for the user to press, while preventing pressure on the fingers when pressing. Furthermore, the elastic member 3 is a telescopic spring, which abuts against the connecting part 61 and the connecting member 5 respectively.

[0043] Furthermore, the outer casing 1 is provided with at least two handles 13, which extend to the left and right sides of the outer casing 1. The handles 13 facilitate user operation and allow the user to press the button 6 forcefully. The user can place two fingers on the handles 13 and press the button 6 with their thumb to operate it. Specifically, the front surface of the handle 13 is provided with anti-slip grooves 131, the end of the handle 13 away from the outer casing 1 has a protrusion 132, and the end of the handle 13 away from the outer casing 1 has a rope groove 133, which is located on the rear end face. The anti-slip grooves 131 are used to increase the friction of the handle 13 and prevent fingers from slipping. The protrusion 132 prevents fingers from slipping off the edge of the handle 13. The presence of the rope groove 133 allows the axle remover to be attached to the roller skate packaging bag for easy carrying; and the rope groove 133 is located on the rear end of the handle 13, so lifting the axle remover will lift the packaging bag as well. Moreover, the contact area between the handle 13 and the fingers is significantly larger than the contact area between the packaging bag drawstring and the fingers. The drawstring will tighten around the fingers, but the handle 13 will not.

Claims

1. An axis extractor, characterized by: The device comprises a shell, a telescopic part, an elastic part and at least one claw part. The telescopic part and the claw part are installed in the shell and slide with the shell. The telescopic part is beside the claw part. Both the claw part and the telescopic part protrude outward from the front end of the shell. The elastic part is arranged between the shell and the telescopic part and always acts on the telescopic part. The elastic part is configured to give the telescopic part a spring force to slide towards the rear end of the shell. The telescopic part comprises an acting part at the front end thereof. The acting part is configured to selectively abut against the claw part. The diameter of the acting part gradually increases from the rear to the front. The device comprises a taking state and an in-out state. In the in-out state, the telescopic part slides forward in the shell and makes the acting part disengage from the claw part, so that the telescopic part and the claw part can pass through the bearing hole. In the taking state, the acting part of the telescopic part abuts against the claw part under the action of the elastic part. The acting part extrudes the claw part outward, and the claw part deforms outward to make the claw part hook the bearing.

2. The axis extractor of claim 1, wherein: The claw part has one, and the claw part has a protruding hook at the front end. The telescopic part also has a hook symmetrically arranged thereon.

3. The axis extractor of claim 1, wherein: The claw part has two, and the two claw parts are connected by a connecting part. The connecting part is annular, and the telescopic part is inserted in the connecting part. The shell has a receiving groove arranged therein. The front end and the rear end of the receiving groove are open, and the opening of the front end of the receiving groove is provided with a limiting part. The connecting part is arranged in the receiving groove and abuts against the limiting part.

4. The axis extractor of claim 3, wherein: The connecting part and the two claw parts are integrally formed.

5. The axis extractor of claim 3, wherein: The shell is a plastic part, and the connecting part, the telescopic part and the two claw parts are metal parts.

6. The axis extractor of claim 1, wherein: The side of the claw part facing the telescopic part is provided with an inclined surface which inclines outward from the rear to the front.

7. The axis extractor of claim 1, wherein: The telescopic part further comprises a main body part. The diameter of the main body part is smaller than that of the acting part.

8. The axis extractor of claim 1, wherein: The shell is provided with at least two handles extending towards the left and right sides of the shell.

9. The axis extractor of claim 8, wherein: The front surface of the handle is provided with an anti-skid groove.

10. The axis extractor of claim 8, wherein: The end of the handle away from the shell is provided with a protruding part protruding forward.

11. The axis extractor of claim 8, wherein: The end of the handle away from the shell is provided with a rope groove located at the rear end surface.

12. The axis extractor of claim 1, wherein: The rear end of the telescopic part is provided with a button which is slidingly arranged in the shell. The button comprises a connecting part and a pressing part. The connecting part is connected with the telescopic part, and the diameter of the pressing part is greater than that of the connecting part.

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