Detachable sleeve dismounting tool for electric machine

Abstract

The application discloses a detachable screw sleeve dismounting tool for a motor, and relates to the field of screw sleeves, which comprises a screw sleeve body, the bottom end of the screw sleeve body is connected with a mounting handle, a notch is arranged above the connection between the mounting handle and the screw sleeve body, and the screw sleeve body is provided with at least one notch at the bottom end, a shell is used for dismounting the screw sleeve body, a dismounting cylinder and a rotating cylinder are slidably connected in the shell along an axial direction, the two ends of the dismounting cylinder are respectively provided with a dismounting structure and a mounting structure which are used for dismounting the screw sleeve body, and the two ends can be connected with the rotating cylinder, a punch is slidably connected in the rotating cylinder, the top end of the punch is fixedly connected with a guide rod, the guide rod penetrates out of the rotating cylinder upwards and is connected with a rotating handle at the top end. The notch is arranged in the diameter direction at the mounting handle, the tool is inserted into the fractured step, and the complete screw sleeve is conveniently taken out without damaging the screw thread in the motor screw hole.

Description

Technical Field

[0001] This invention relates to the field of screw sleeves, specifically to a tool for disassembling and assembling detachable screw sleeves for motors. Background Technology

[0002] A threaded insert is a new type of internal threaded fastener suitable for threaded connections. It is screwed into and fastened in the threaded hole of one of the connected parts to form a standard internal thread. Bolts or screws are then screwed into it. It is mainly used to reinforce and protect the internal threads of low-strength materials.

[0003] Screw inserts commonly used in electric motors consist of a screw insert body and an mounting shank. The mounting shank is located at the bottom of the screw insert along its diameter, and a break-off groove is provided at the connection between the mounting shank and the screw insert. The mounting shank is used to facilitate the installation of the screw insert. After the screw insert is installed, a hammer is used to break off the mounting shank so that the bolt can be connected to the screw insert later. After the screw insert is installed, the bolt is often not turned when it is unscrewed. A special tool is needed to break the screw insert before it can be removed.

[0004] Regarding the aforementioned technologies, existing threaded inserts require special tools to break them after installation in order to remove them. When the installation depth of the threaded insert is relatively deep, breaking the threaded insert deep into the motor threaded hole can easily damage the internal thread of the motor threaded hole, affecting the stable assembly of the threaded insert afterwards. Therefore, existing threaded inserts are difficult to completely remove from the threaded hole without damaging the internal thread of the threaded hole during the removal process. Summary of the Invention

[0005] Therefore, the purpose of this invention is to provide a tool for removing and installing detachable threaded sleeves for motors, so as to solve the technical problem that existing threaded sleeves are difficult to completely remove from the threaded hole, and that the internal threads of the threaded hole are not damaged during the removal process.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A detachable threaded sleeve for an electric motor includes a threaded sleeve body, with an installation handle connected to the bottom end of the threaded sleeve body. A notch is provided above the connection point between the installation handle and the threaded sleeve body, and the notch provided at the bottom end of the threaded sleeve body is at least one.

[0008] By adopting the above technical solution, a notch is set along the diameter direction at the mounting handle. A tool is then inserted into the broken step to easily remove the complete sleeve without damaging the internal thread of the motor screw hole.

[0009] The present invention is further configured such that the notch at the connection between the mounting handle and the threaded sleeve body is oriented toward the axis of the threaded sleeve body, and the threaded sleeve body is also provided with another notch at the same height, the two notches being symmetrical about the axis of the threaded sleeve body.

[0010] By adopting the above technical solution, the rotation and unscrewing of the threaded sleeve body can be stably achieved.

[0011] The present invention is further configured such that the notch provided at the connection between the mounting handle and the threaded sleeve body is a first notch, and the notch corresponding to the first notch is a second notch. Both the first notch and the second notch are circular through holes that face the axis of the threaded sleeve body and are provided along the diameter of the cross section of the threaded sleeve body.

[0012] By adopting the above technical solution, the processing of the threaded sleeve body is facilitated, and the processing difficulty of the threaded sleeve body is effectively reduced.

[0013] The present invention is further provided with an upward-facing punched notch on the notch at the connection between the threaded sleeve body and the mounting shank.

[0014] By adopting the above technical solution, the fracture point is set upward at the first notch, which allows the mounting handle to break more quickly when subjected to a vertically downward impact force, effectively preventing the mounting handle from sticking to the threaded sleeve body when subjected to impact.

[0015] A tool for disassembling and assembling a detachable threaded sleeve for an electric motor includes a housing for disassembling and assembling the threaded sleeve body. A loading / unloading cylinder and a rotating cylinder are slidably connected within the housing along an axial direction. The loading / unloading cylinder has a disassembly structure and an installation structure at both ends for disassembling and assembling the threaded sleeve body, both of which can be connected to the rotating cylinder. A punch is slidably connected inside the rotating cylinder. A guide rod is fixedly connected to the top of the punch. The guide rod extends upward through the rotating cylinder and has a rotating handle connected to its top. A spring is provided between the top of the punch and the top of the inner wall of the rotating cylinder.

[0016] By adopting the above technical solution, the clamping rod is locked in the notch of the screw sleeve body, and the screw sleeve body can be rotated by rotating the loading and unloading cylinder, thereby realizing the disassembly of the screw sleeve body.

[0017] The present invention is further configured such that both ends of the loading and unloading cylinder are provided with a first pin hole, the bottom end of the rotating cylinder is provided with a second pin hole, a pin passes through the first pin hole and the second pin hole, and an opening is provided on one side of the bottom of the housing, and a pin groove for accommodating the pin is provided at the opening.

[0018] By adopting the above technical solution, the connection between the loading / unloading cylinder and the rotating cylinder is achieved using a pin.

[0019] The present invention is further configured such that one end of the loading and unloading cylinder is provided with a screw groove for cooperating with the mounting handle at the bottom end of the screw sleeve body, and a locking rod is rotatably connected to the other end. The locking rod is used to cooperate with the notch at the bottom end of the screw sleeve body. The end of the loading and unloading cylinder is provided with a receiving groove for accommodating the locking rod. The locking rod can be parallel to the axis of the loading and unloading cylinder. When the end of the loading and unloading cylinder with the locking rod faces downward, the locking rod is limited by the limiting piece at the bottom end of the loading and unloading cylinder after rotating to be orthogonal to the axis of the loading and unloading cylinder and cannot continue to rotate.

[0020] By adopting the above technical solution, when the end of the loading and unloading cylinder with the twisting groove faces downward, the lever rotates under its own weight and is located in the receiving groove.

[0021] The present invention is further configured such that a conical cover is connected to the bottom end of the housing, and the diameter of the top end of the conical cover is larger than the internal thread diameter of the screw sleeve body.

[0022] By adopting the above technical solution, the conical cover at the bottom of the housing can keep the threaded sleeve body stable when screwed into the threaded hole.

[0023] The present invention is further configured such that a rotating handle is slidably connected to the top end of the rotating cylinder, and the axis of the rotating handle is orthogonal to the axis of the rotating cylinder.

[0024] By adopting the above technical solution, the rotating cylinder is rotated using a rotating handle.

[0025] In summary, the present invention has the following main beneficial effects:

[0026] This invention provides a notch along the diameter of the mounting handle. After the connection between the mounting handle and the screw sleeve is broken at the notch, a step that can apply torque is formed at the notch. By inserting a tool into the broken step, the locking rod engages with the step structure. When the tool rotates, the screw sleeve can be easily rotated and unscrewed from the screw hole of the motor. The complete screw sleeve can be easily removed without damaging the internal threads of the motor screw hole.

[0027] This invention improves the stability of the broken mounting handle by setting an upward-facing break at the notch, making it easier to break when subjected to vertical impact force, and the broken mounting handle is less likely to stick to the threaded sleeve.

[0028] This invention features a sliding punch block inside a rotating cylinder, with a guide rod connected to the top of the punch block. A spring coaxial with the guide rod and located at the top of the punch block stores elastic potential energy. When the mounting handle needs to be broken, simply pull the rotating handle upwards to compress the spring inside the rotating cylinder. Releasing the rotating handle accelerates the punch block under the spring's force, causing it to impact the bottom of the rotating cylinder's inner wall. The impact force is transmitted through the loading / unloading cylinder to the mounting handle, conveniently breaking it off. This allows for easy breaking of the mounting handle after the screw sleeve is installed, eliminating the need for subsequent tool changes and significantly improving the installation efficiency of the screw sleeve.

[0029] This invention provides a multi-functional loading and unloading tool by setting structures for installing and removing threaded sleeves at both ends of the loading and unloading cylinder. When the function of the loading and unloading tool needs to be changed, only the orientation of the loading and unloading cylinder needs to be changed. This conveniently realizes the multi-functionality of the loading and unloading tool, enabling it to both install and remove threaded sleeves without changing any parts on the tool. This significantly improves the efficiency of threaded sleeve loading and unloading, and also effectively simplifies the loading and unloading tool, further enhancing the efficiency of threaded sleeve loading and unloading. Attached Figure Description

[0030] Figure 1 A perspective view of the screw sleeve installation and disassembly tool of the present invention in the state of installing the screw sleeve;

[0031] Figure 2 For the present invention Figure 1 Enlarged view of A in the middle;

[0032] Figure 3 This is a perspective view of the screw sleeve of the present invention;

[0033] Figure 4 This is a perspective view of the screw sleeve from another angle;

[0034] Figure 5 This is a perspective view of the screw sleeve in the fractured state of the mounting handle of the present invention;

[0035] Figure 6 This is an exploded view of the disassembly and assembly tool for the screw sleeve of the present invention;

[0036] Figure 7 This is a perspective view of the screw sleeve mounting end of the loading and unloading cylinder of the present invention facing downwards;

[0037] Figure 8 For the present invention Figure 7 Enlarged view of B in the middle;

[0038] Figure 9 This is a perspective view of the screw sleeve removal end of the loading and unloading cylinder of the present invention facing downwards;

[0039] Figure 10 For the present invention Figure 9Enlarged view of C;

[0040] Figure 11 This is a perspective view of the internal structure of the rotating cylinder of the present invention.

[0041] In the diagram: 1. Sleeve body; 2. Mounting handle; 3. First notch; 4. Second notch; 5. Punch cutout; 6. Housing; 7. Loading / unloading cylinder; 8. Rotating cylinder; 9. Rotating handle; 10. Conical cover; 11. Grip; 12. Pin; 13. First pin hole; 14. Receiving groove; 15. Locking rod; 16. Tightening groove; 17. Punch block; 18. Guide rod; 19. Spring; 20. Second pin hole; 21. Pin groove. Detailed Implementation

[0042] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0043] The embodiments of the present invention will now be described. Example

[0044] A removable threaded sleeve for an electric motor, such as Figure 3-5 As shown, the device includes a threaded sleeve body 1, with an installation handle 2 connected to the bottom end of the threaded sleeve body 1. A notch is provided above the connection between the installation handle 2 and the threaded sleeve body 1. The threaded sleeve body 1 has at least one notch at its bottom end. Specifically, the notch at the bottom end of the threaded sleeve body 1 includes a first notch 3 and a second notch 4. The notch at the connection between the threaded sleeve body 1 and the installation handle also has an upward-facing punch 5. Specifically, the punch 5 has a V-shaped structure and is positioned upward at the first notch 3, allowing the installation handle 2 to break more quickly when subjected to a vertically downward impact force, effectively preventing the installation handle 2 from sticking to the threaded sleeve body 1 when subjected to impact. The notch at the connection between the installation handle 2 and the threaded sleeve body 1 is oriented towards the axis of the threaded sleeve body 1. The threaded sleeve body 1 also has another notch at the same height. The two notches are symmetrical about the axis of the threaded sleeve body 1. The two notch structures on the threaded sleeve body 1 can provide two balanced force points for the tool when the threaded sleeve body 1 needs to be unscrewed, thereby stably realizing the rotation and unscrewing of the threaded sleeve body 1.

[0045] Please see Figure 1-5The notch provided at the connection between the mounting handle 2 and the threaded sleeve body 1 is the first notch 3, and the notch corresponding to the first notch 3 is the second notch 4. Both the first notch 3 and the second notch 4 are circular through holes facing the axis of the threaded sleeve body 1 and along the diameter of the cross section of the threaded sleeve body 1. The first notch 3 and the second notch 4 are circular through holes that correspond to each other, which facilitates the processing of the threaded sleeve body 1. The processing of the two notches can be completed in one go along the diameter of the cross section of the threaded sleeve body 1, which effectively reduces the processing difficulty of the threaded sleeve body 1. Example

[0046] A detachable threaded sleeve for an electric motor, based on Embodiment 1, differs from Embodiment 1 in that the bottom end of the threaded sleeve body 1 is connected to a protrusion. The inner and outer walls of the protrusion are not threaded, but the bottom end is provided with the same notch and mounting handle 2 structure as in Embodiment 1. The protrusion and the threaded sleeve body 1 are connected in a vertical insertion manner, and torque can be transmitted between them. After the threaded sleeve body 1 is unscrewed, the threaded sleeve body can be reused by removing and replacing the new protrusion, effectively reducing the waste of resources.

[0047] Please refer to a tool for removing and installing detachable threaded sleeves for motors. Figure 1-11 The assembly includes a housing 6, which is used for assembling and disassembling the threaded sleeve body 1. A loading / unloading cylinder 7 and a rotating cylinder 8 are slidably connected within the housing 6 along its axial direction. The loading / unloading cylinder 7 has disassembly and assembly structures at both ends for assembling and disassembling the threaded sleeve body 1, both of which can be connected to the rotating cylinder 8. A punch 17 is slidably connected inside the rotating cylinder 8. Specifically, the punch 17 is a solid cuboid structure, facilitating the transmission of torque to the rotating cylinder 8 via the rotating handle 9, and also ensuring sufficient kinetic energy for the punch 17. A guide rod 18 is fixedly connected to the top of the punch 17, extending upwards through the rotating cylinder 8 and connected to a rotating handle 9 at its top. The top of the punch 17 is connected to the rotating cylinder 8... A spring 19 is provided between the top ends of the inner wall of the cylinder 8. The installation and removal of the screw sleeve body 1 are carried out by the disassembly and installation structures at both ends of the loading and unloading cylinder 7. The installation structure of the loading and unloading cylinder 7 is a screw groove 16. The width of the screw groove 16 is greater than that of the installation handle 2, which can accommodate the installation handle 2 in the screw groove 16. As the loading and unloading cylinder 7 rotates, the screw sleeve body 1 rotates accordingly. The disassembly structure of the loading and unloading cylinder 7 includes a locking rod 15. When the locking rod 15 is in a horizontal state, the locking rod 15 is locked in the notch of the screw sleeve body 1. At the same time, rotating the loading and unloading cylinder 7 will make the screw sleeve body 1 rotate accordingly, thereby realizing the disassembly of the screw sleeve body 1.

[0048] Please see Figure 1-26-10. One end of the loading / unloading cylinder 7 is provided with a screw groove 16 for engaging with the mounting handle 2 at the bottom of the threaded sleeve body 1, and a locking rod 15 is rotatably connected to the other end. Specifically, the screw groove 16 can engage with the mounting handle 2 of the threaded sleeve body 1, and the locking rod 15 is used to engage with the first notch 3 and the second notch 4 at the bottom of the threaded sleeve body 1. The end of the loading / unloading cylinder 7 is provided with a receiving groove 14 for accommodating the locking rod 15. The locking rod 15 can be parallel to the axis of the loading / unloading cylinder 7. When the end of the loading / unloading cylinder 7 with the locking rod 15 faces downward, the locking rod 15 rotates to engage with the mounting handle 2. After the axis of cylinder 7 is orthogonal, it is limited by the limiting piece at the bottom of loading and unloading cylinder 7 and cannot continue to rotate. When the end of loading and unloading cylinder 7 with the screw groove 16 is facing downward, the locking rod 15 rotates under its own weight and is located in the receiving groove 14. The locking rod 15 located in the receiving groove 14 will not affect the normal extension, retraction and rotation of loading and unloading cylinder 7. When the other end of loading and unloading cylinder 7 is facing downward, the locking rod 15 rotates under its own weight and is limited by the limiting structure and is in a horizontal state. At this time, the locking rod 15 can cooperate with the notch on the screw sleeve body 1 to realize the rotation of the screw sleeve body 1.

[0049] Please see Figure 7-10 Both ends of the loading and unloading cylinder 7 are provided with first pin holes 13, and the bottom end of the rotating cylinder 8 is provided with a second pin hole 20. A pin 12 passes through the first pin hole 13 and the second pin hole 20. An opening is provided on one side of the bottom of the housing 6, and a pin groove 21 for accommodating the pin 12 is provided at the opening. The pin 12 is used to connect the loading and unloading cylinder 7 and the rotating cylinder 8. The opening at the bottom of the housing 6 provides space for inserting and removing the pin 12. The operator can easily insert and remove the pin 12 through the opening, thereby completing the installation and disassembly of the loading and unloading cylinder 7 and the rotating cylinder 8.

[0050] Please see Figure 7-8 The bottom end of the housing 6 is connected to a conical cover 10. The diameter of the top of the conical cover 10 is larger than the internal thread diameter of the screw sleeve body 1. Specifically, the conical cover can abut against the screw sleeve body 1 when the screw sleeve body 1 is screwed into the screw hole, so that the thread on its outer wall can better match the thread in the screw hole. The conical cover 10 at the bottom of the housing 6 can keep the screw sleeve body 1 stable when screwed into the screw hole. The top of the rotating cylinder 8 is slidably connected to the rotating handle 9. The axis of the rotating handle 9 is orthogonal to the axis of the rotating cylinder 8. The rotating cylinder 8 is rotated by the rotating handle 9. The length of the lever arm of the rotating handle 9 can be adjusted by sliding. When the torque required to tighten the screw sleeve body 1 is large, the rotating handle 9 can be slid to move one end away from the top of the rotating cylinder 8. At this time, the lever arm of the rotating handle 9 increases, so that the screw sleeve body 1 can be tightened or loosened more easily.

[0051] The working principle of this invention is as follows: Align the mounting handle 2 of the screw sleeve body 1 with the screwing groove 16 of the loading and unloading cylinder 7, slide the loading and unloading cylinder 7 so that the conical cover 10 presses against the screw sleeve body 1, screw the screw sleeve body 1 into the designated screw hole of the motor, and when the screw sleeve body 1 is screwed into place, hold the rotating cylinder 8 and pull the rotating handle 9 upward. Spring 19 stores elastic potential energy, and then the rotating handle 9 is released. The punch 17 strikes the inner wall of the rotating cylinder 8, and the kinetic energy is transferred to the loading and unloading cylinder 7. The screw groove 16 at the bottom of the loading and unloading cylinder 7 breaks off the installation handle 2, and the screw sleeve body 1 forms a break at the first notch 3. At this time, the quick installation of the screw sleeve body 1 is completed. When it is necessary to disassemble the screw sleeve body 1, first unscrew the screw in the motor screw hole, then pull out the pin between the rotating cylinder 8 and the loading and unloading cylinder 7, pull the loading and unloading cylinder 7 out of the housing 6, turn the orientation of the loading and unloading cylinder 7 so that the end of the loading and unloading cylinder 7 with the locking rod 15 is facing down, insert the loading and unloading cylinder 7 back into the housing 6 and reconnect the loading and unloading cylinder 7 and the rotating cylinder 8 using the pin. At this time, the locking rod 15 rotates under its own weight. The device unfolds, but remains horizontal due to the obstruction of the baffle structure. The loading and unloading cylinder 7 is inserted into the screw sleeve body 1. The locking rod 15 is blocked by the inner wall thread of the screw sleeve body 1 and rotates upward until the locking rod 15 extends into the screw hole to a depth that the screw sleeve body 1 has not reached. At this time, the locking rod 15 is no longer blocked by the inner wall thread of the screw sleeve body 1 and returns to a horizontal state. At this time, the housing 6 is lifted upward and the rotating handle 9 is rotated at the same time, so that the locking rod 15 is engaged in the first notch 3 and the second notch 4. When the locking rod 15 is engaged in the first notch 3 and the second notch 4, rotating the rotating handle 9 can smoothly apply torque to the screw sleeve body 1, and thus smoothly unscrew the screw sleeve body 1 from the screw hole without damaging the screw hole.

[0052] Although embodiments of the present invention have been shown and described, these specific embodiments are merely illustrative of the invention and are not intended to limit it. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. A tool for disassembling and assembling a detachable threaded sleeve for an electric motor, comprising a housing for disassembling and assembling a threaded sleeve body, an installation handle connected to the bottom end of the threaded sleeve body, a notch provided above the connection point between the installation handle and the threaded sleeve body, at least one notch provided at the bottom end of the threaded sleeve body, the notch at the connection point between the installation handle and the threaded sleeve body facing the axial direction of the threaded sleeve body, another notch provided at the same height on the threaded sleeve body, the two notches being symmetrical about the axial direction of the threaded sleeve body, the notch at the connection point between the installation handle and the threaded sleeve body being the first notch, the notch corresponding to the first notch being the second notch, both the first and second notches being circular through holes facing the axial direction of the threaded sleeve body and along the diameter direction of the cross-section of the threaded sleeve body, and an upward-facing punched notch provided on the notch at the connection point between the threaded sleeve body and the installation handle, characterized in that: The housing contains a loading / unloading cylinder and a rotating cylinder that slide along the axial direction. The loading / unloading cylinder has a disassembly structure and an installation structure at both ends for disassembling and assembling the screw sleeve body, both of which can be connected to the rotating cylinder. A punch block slides inside the rotating cylinder, and a guide rod is fixedly connected to the top of the punch block. The guide rod extends upward through the rotating cylinder and has a rotating handle connected to its top. A spring is installed between the top of the punch block and the top of the inner wall of the rotating cylinder. One end of the loading / unloading cylinder has a screw groove for engaging with the mounting handle at the bottom of the screw sleeve body, and a locking rod is rotatably connected to the other end. The locking rod engages with a notch at the bottom of the screw sleeve body. The end of the loading / unloading cylinder has a receiving groove for accommodating the locking rod. The locking rod can be parallel to the axis of the loading / unloading cylinder. When the end of the loading / unloading cylinder with the locking rod faces downwards, the locking rod, after rotating to be orthogonal to the axis of the loading / unloading cylinder, is limited by a limiting piece at the bottom of the loading / unloading cylinder and cannot continue to rotate.

2. The tool for disassembling and assembling detachable threaded sleeves for motors according to claim 1, characterized in that: Both ends of the loading and unloading cylinder are provided with a first pin hole, and the bottom end of the rotating cylinder is provided with a second pin hole. A pin passes through the first pin hole and the second pin hole. An opening is provided on one side of the bottom of the housing, and a pin groove for accommodating the pin is provided at the opening.

3. The tool for disassembling and assembling detachable threaded sleeves for motors according to claim 1, characterized in that: The bottom end of the housing is connected to a conical cover, and the diameter of the top of the conical cover is larger than the internal thread diameter of the sleeve body.

4. The tool for disassembling and assembling detachable threaded sleeves for motors according to claim 1, characterized in that: A rotating handle is slidably connected to the top of the rotating cylinder, and the axis of the rotating handle is orthogonal to the axis of the rotating cylinder.

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