High-strength hollow cup extension line protection structure
By designing a high-strength protective structure and rubber protective sleeve on the extension line of the coreless motor, the problems of easy detachment and poor wear resistance of the extension line are solved, achieving high-strength protection and improved wear resistance of the extension line, ensuring normal operation of the motor and extending its service life.
Patent Information
- Application Number
- CN202520124556.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-20
- Publication Date
- 2026-02-24
- Estimated Expiration
- 2035-01-20
AI Technical Summary
Hollow cup motor extension cords lack protective features, are easily detached due to external forces, and have poor wear resistance, affecting normal operation and service life.
A high-strength hollow cup extension cord protection structure was designed, including components such as a ferrule, bolt assembly, clamping block, connecting frame, threaded post, nut, clamping sleeve, pressure plate, threaded rod, and knob. These components provide high-strength protection for the extension cord, and a protective sleeve made of rubber material is used for external protection.
It effectively prevents the extension cord from detaching due to external force, improves wear resistance, ensures the normal operation of the coreless motor, and extends its service life.
Smart Images

Figure CN223942532U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of protection technology for hollow cup motor extension cords, and more specifically, to a high-strength protection structure for hollow cup extension cords. Background Technology
[0002] In coreless motors, the extension cable typically refers to the wire connecting the motor body to an external power source or control system. The primary function of this wire is to transmit electrical energy, enabling the motor to operate normally. In coreless motor applications, the extension cable not only serves as a connection but also transmits the power or signals generated by the motor to external devices.
[0003] The following problems exist when using a hollow cup motor extension cable:
[0004] (1) The extension cord of the hollow cup motor lacks protection. When the extension cord is pulled by external force, it is easy for the extension cord to detach from the air cup motor, causing the hollow cup motor to malfunction.
[0005] (2) The extension cord of the hollow cup motor may be subject to certain friction during use, which will cause the extension cord to wear and reduce its service life.
[0006] Therefore, we have made improvements and proposed a high-strength hollow cup extension line protection structure. Utility Model Content
[0007] The purpose of this invention is to address the problems of poor protection and easy wear and tear caused by external friction in existing hollow cup motor extension cables.
[0008] To achieve the above-mentioned objectives, this utility model provides the following technical solution:
[0009] A high-strength hollow cup extension line protection structure is used to improve the above-mentioned problems.
[0010] The present invention is as follows:
[0011] The device includes a coreless motor, with extension cords installed at its two terminals. Two symmetrical retaining sleeves are located near one end of the coreless motor's extension cord, and these sleeves are detachably connected via bolt assemblies. Each retaining sleeve has a retaining block fixedly connected to it, and a connecting bracket is inserted into each retaining block. A threaded post is fixedly connected to the outer end face of each retaining block, and a nut is threaded onto the threaded post. Each extension cord has a clamping sleeve fixedly connected to the connecting bracket. A pressure plate is located inside the clamping sleeve, and a threaded rod is rotatably connected to the center of the end face of the clamping sleeve. The bottom end of the threaded rod abuts against the upper end face of the pressure plate, and a knob is fixedly connected to the top end of the threaded rod. Each extension cord has a protective structure.
[0012] As a preferred technical solution of this utility model, the protective structure includes an assembly head connected to a clamping sleeve by screws, and a protective sleeve is fitted on each extension line body. The inner end of the protective sleeve is fixedly connected to the outer wall of the assembly head.
[0013] As a preferred embodiment of this invention, the inner diameter of the protective sleeve is the same as the diameter of the extension cord, and the protective sleeve is made of rubber material.
[0014] As a preferred technical solution of this utility model, a first rubber pad is fixedly connected inside the clamping sleeve, and the lower end face of the pressure plate is fixedly connected to a second rubber pad.
[0015] As a preferred technical solution of this utility model, a third rubber pad is fixedly connected inside both of the card sleeves, and the third rubber pad is arc-shaped.
[0016] As a preferred technical solution of this utility model, the cross-sectional shape of the card block is square, and the top of the connecting frame is provided with an insertion port that matches the card block.
[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0018] In the solution of this utility model:
[0019] 1. By using a set of clamping sleeves, bolt assemblies, clamping blocks, connecting brackets, threaded columns, nuts, clamping sleeves, pressure plates, threaded rods, and knobs, high-strength protection is achieved for the extension cable of the hollow cup motor, preventing the extension cable from falling off due to external force, ensuring the normal operation of the hollow cup motor, and solving the problem in the prior art that the extension cable is easily separated from the hollow cup motor by external force.
[0020] 2. By setting up a protective structure, the outer surface of the extension cord is protected, improving its wear resistance, avoiding friction-induced wear, and extending its service life. This solves the problem of poor wear resistance of extension cords in existing technologies. Attached Figure Description
[0021] Figure 1 A schematic diagram of the overall structure of this utility model;
[0022] Figure 2 A schematic diagram of the protective structure provided by this utility model;
[0023] Figure 3 A schematic diagram of the planar structure of the clamping extension line provided by this utility model;
[0024] Figure 4 Provided by this utility model Figure 3 Enlarged view of point A in the middle;
[0025] Figure 5 A schematic diagram of the protective structure provided for this utility model;
[0026] Figure 6 This is a schematic diagram of the structure from another perspective of the present invention.
[0027] The image shows:
[0028] 1. Hollow cup motor; 2. Extension cord; 3. Sleeve; 4. Bolt assembly; 5. Clamping block; 6. Connecting bracket; 7. Threaded post; 8. Nut; 9. Clamping sleeve; 10. Pressure plate; 11. Threaded rod; 12. Knob; 13. Protective structure; 1301. Assembly head; 1302. Protective sleeve; 14. First rubber pad; 15. Second rubber pad; 16. Third rubber pad. Detailed Implementation
[0029] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model.
[0030] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, this embodiment proposes a high-strength hollow cup extension cord protection structure, including a hollow cup motor 1. Extension cord bodies 2 are respectively installed at the two terminals of the hollow cup motor 1. Two symmetrical retaining sleeves 3 are provided at one end of the hollow cup motor 1 near the extension cord body 2. The two retaining sleeves 3 are detachably connected by a bolt assembly 4. A retaining block 5 is fixedly connected to each retaining sleeve 3. A connecting bracket 6 is inserted into the retaining block 5. A threaded post 7 is fixedly connected to the outer end face of the retaining block 5. A nut 8 is threaded onto the threaded post 7. A clamping sleeve 9 is provided on each extension cord body 2. The clamping sleeve 9 is fixedly connected to the connecting bracket 6. A pressure plate 10 is provided inside the clamping sleeve 9. A threaded rod 11 is rotatably connected to the center of the end face of the clamping sleeve 9. The bottom end of the threaded rod 11 abuts against the upper end face of the pressure plate 10. A knob 12 is fixedly connected to the top end of the threaded rod 11. The extension line 2 is provided with a protective structure 13. By passing the extension line 2 through the clamping sleeve 9 and then rotating the knob 12, the threaded rod 11 rotates and descends, squeezing the pressure plate 10. This causes the pressure plate 10 to descend and thus clamp and fix the extension line 2, preventing the extension line 2 from detaching from the hollow cup motor 1 due to external force. This provides high-strength protection for the extension line and ensures the normal operation of the hollow cup motor 1.
[0031] like Figure 1 , Figure 2 and Figure 5 As shown, in a preferred embodiment, based on the above method, the protective structure 13 further includes an assembly head 1301 connected to the clamping sleeve 9 by screws, and a protective sleeve 1302 is fitted on each extension cable 2. The inner end of the protective sleeve 1302 is fixedly connected to the outer wall of the assembly head 1301. The assembly head 1301 facilitates installation and removal from the clamping sleeve 9, and the protective sleeve 1302 can provide external protection for the extension cable 2, avoiding damage to the extension cable 2 caused by external friction and compression.
[0032] like Figure 1 and Figure 2 As shown, in a preferred embodiment, based on the above method, the inner diameter of the protective sleeve 1302 is the same as the diameter of the extension cord 2, and the protective sleeve 1302 is made of rubber material; the protective sleeve 1302 made of rubber material is convenient for protecting the extension cord 2, enhancing the wear resistance of the extension cord 2, improving the service life of the extension cord, and also enabling the extension cord to be bent.
[0033] like Figure 4 As shown, in a preferred embodiment, based on the above method, a first rubber pad 14 is fixedly connected inside the clamping sleeve 9, and a second rubber pad 15 is fixedly connected to the lower end face of the pressure plate 10. The first rubber pad 14 and the second rubber pad 15 can protect the clamped and fixed extension cord 2, and can also increase the friction with the extension cord 2, improve the effect of fixing the extension cord 2, and improve the protection effect.
[0034] like Figure 5 and Figure 6 As shown, in a preferred embodiment, based on the above method, a third rubber pad 16 is fixedly connected inside both sleeves 3. The third rubber pad 16 is arc-shaped. The third rubber pad 16 increases the friction between the sleeve 3 and the hollow cup motor 1, preventing the sleeve 3 from loosening and improving the stability of the installation.
[0035] like Figure 2 As shown, in a preferred embodiment, based on the above method, the cross-sectional shape of the card block 5 is square, and the top of the connecting frame 6 is provided with an insertion port that matches the card block 5; this enables the connecting frame 6 to be installed on the card block 5, ensuring the stability of the connecting frame 6 after installation, and facilitating installation and disassembly.
[0036] Specifically, when using this high-strength hollow cup extension cord protective structure: First, install the two clamping sleeves 3 on the hollow cup motor 1 respectively. Then, connect and fix the two clamping sleeves 3 to the hollow cup motor 1 with the bolt assembly 4. Then, pass the extension cord 2 through the clamping sleeve 9 respectively, so that the connecting bracket 6 is inserted into the clamping block 5. Then, tighten the nut 8 and the threaded post 7. Then, place the pressure plate 10 inside the first rubber pad 14. Then, rotate the knob 12 to make the threaded rod 11 rotate and descend, squeezing the pressure plate 10. This causes the pressure plate 10 to descend and press and fix the extension cord 2, preventing the extension cord 2 from detaching from the hollow cup motor 1 due to external force. Then, insert the extension cord 2 into the assembly head 1301 and the protective sleeve 1302. Then, fix the assembly head 1301 to the clamping sleeve 9 with screws. The protective sleeve 1302 can protect the extension cord 2 and improve its service life.
[0037] All technical features in this embodiment can be freely combined according to actual needs.
[0038] The above embodiments are preferred implementations of this utility model. In addition, this utility model can also be implemented in other ways. Any obvious substitutions without departing from the concept of this technical solution are within the protection scope of this utility model.
Claims
1. A high-strength hollow cup extension wire protection structure, comprising a hollow cup motor (1), characterized in that, The hollow cup motor (1) has extension cords (2) installed at its two terminals respectively. Two retaining sleeves (3) are symmetrically provided at one end of the hollow cup motor (1) near the extension cords (2). The two retaining sleeves (3) are detachably connected by a bolt assembly (4). Each retaining sleeve (3) is fixedly connected to a retaining block (5). A connecting bracket (6) is inserted into the retaining block (5). A threaded post (7) is fixedly connected to the outer end face of the retaining block (5). The threaded post (7) is threadedly connected to... There is a nut (8), and each extension body (2) is provided with a clamping sleeve (9). The clamping sleeve (9) is fixedly connected to the connecting frame (6). The clamping sleeve (9) is provided with a pressure plate (10). A threaded rod (11) is rotatably connected to the center of the end face of the clamping sleeve (9). The bottom end of the threaded rod (11) abuts against the upper end face of the pressure plate (10). A knob (12) is fixedly connected to the top end of the threaded rod (11). Each extension body (2) is provided with a protective structure (13).
2. The high-strength hollow cup extension wire protection structure according to claim 1, characterized in that, The protective structure (13) includes an assembly head (1301) connected to the clamping sleeve (9) by screws. Each extension line (2) is fitted with a protective sleeve (1302). The inner end of the protective sleeve (1302) is fixedly connected to the outer wall of the assembly head (1301).
3. The high-strength hollow cup extension wire protection structure according to claim 2, characterized in that, The inner diameter of the protective sleeve (1302) is the same as the diameter of the extension body (2), and the protective sleeve (1302) is made of rubber material.
4. The high-strength hollow cup extension wire protection structure according to claim 1, characterized in that, The first rubber pad (14) is fixedly connected inside the clamping sleeve (9), and the lower end face of the pressure plate (10) is fixedly connected to the second rubber pad (15).
5. The high-strength hollow cup extension wire protection structure according to claim 1, characterized in that, Both of the two sleeves (3) have a third rubber pad (16) fixedly connected inside, and the third rubber pad (16) is arc-shaped.
6. The high-strength hollow cup extension wire protection structure according to claim 1, characterized in that, The cross-sectional shape of the card block (5) is square, and the top of the connecting frame (6) is provided with an insertion port that matches the card block (5).