Remote control electromagnetic hook of model car
By designing a remote-controlled electromagnetic hook, the magnetic attraction force is controlled by switching the coil on and off, solving the problem of cumbersome assembly and disassembly of the model car lock hook, achieving efficient connection and disassembly operations, and improving the user experience.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DONGGUAN XINHE PRECISION MODEL TECH CO LTD
- Filing Date
- 2025-04-24
- Publication Date
- 2026-04-14
AI Technical Summary
The existing model vehicles suffer from cumbersome and inefficient hook-and-lock operations during assembly, resulting in a poor user experience.
It adopts a remote-controlled electromagnetic hook, which controls the magnetic force of the magnet by switching the coil on and off to lock and unlock the movable hook, and uses a remote control device to control the connection and disassembly of the model car.
It improves the efficiency of model car assembly and disassembly, provides a better user experience, and saves time and effort in operation.
Smart Images
Figure CN224113277U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of model cars, specifically relating to a remote-controlled electromagnetic hook for a model car. Background Technology
[0002] As the technology of rail transit model vehicles has matured, the structural design of model vehicles has become increasingly accurate in many details, closely resembling real rail transit vehicles. Currently, model vehicles are generally assembled by interlocking two locking hooks. Most model vehicles use mechanically connected locking hooks, similar to those on real rail vehicles. When locking or disassembling the locking hooks, especially for small hooks, the small gaps between model vehicles make the operation very troublesome, resulting in low efficiency and a poor user experience. Utility Model Content
[0003] The purpose of this invention is to address the above-mentioned problems by providing a remote-controlled electromagnetic hook for model cars, thus solving the problems of low efficiency in assembling and disassembling existing model cars.
[0004] This utility model is achieved through the following technical solution: a remotely controllable electromagnetic hook for a model car, comprising two sets of hook assemblies fixed to both ends of the model car body. Each hook assembly includes an outward-facing U-shaped housing, a movable hook axially connected to one end of the opening of the U-shaped housing, and a driving component disposed on the inward-facing side of the U-shaped housing. A hollow winding post communicating with the interior of the U-shaped housing is provided in the middle of the inward-facing side of the U-shaped housing. The driving component includes an energized coil wound on the winding post, a magnet located inside the hollow winding post, and an elastic reset component. The length of the magnet is greater than the length of the coil, and the elastic reset component abuts against... The movable hook, located between the ends of the magnet and the hollow winding post, includes a hook block and a limiting block arranged perpendicularly to each other. A shaft connection hole is provided at the connection between the hook block and the limiting block. A protrusion extends from the middle of the limiting block toward the middle of the U-shaped housing. The end of the protrusion near the hook block forms an outwardly convex arc surface with the limiting block. The end of the protrusion away from the hook block forms a first locking step with the limiting block. The protrusion protrudes and appears at the opening of the U-shaped housing as the hook block swings outward. The end of the magnet that abuts against the movable hook is provided with a second locking step that adapts to the shape of the first locking step.
[0005] Furthermore, the elastic reset element is a spring, and the end of the magnet that is relatively away from the movable hook is provided with a third locking step. One end of the spring is fixed inside the hollow winding column at the end away from the U-shaped shell, and the other end of the spring abuts and is fixed to the third locking step of the magnet.
[0006] Furthermore, the edge of the hook block away from the shaft connection hole is a semi-circular guide surface.
[0007] Furthermore, the other empty end of the U-shaped shell has an arc-shaped chamfer extending obliquely away from the end with the movable hook.
[0008] Furthermore, the arc surface of the protrusion forms a semi-enclosed structure with the angle between the hook block and the limiting block, and the shape of the semi-enclosed structure matches the shape of the end of the hook block away from the shaft connection hole.
[0009] Furthermore, the U-shaped housing has two parallel fixing plates at one end for shaft connection. The fixing plates have fixing holes with shapes that match the shaft connection holes. The fixing plates and the movable hook metal hook are fixedly connected to the fixing holes and shaft connection holes by pins.
[0010] Furthermore, the coupler assemblies at both ends of the model vehicle body are arranged in a centrally symmetrical manner.
[0011] Furthermore, limiting baffles are provided on the outer walls of both ends of the hollow winding column.
[0012] This invention adjusts the locking state of the magnet to the movable hook by remotely controlling the on / off state of the coil. The hook connection between the movable hooks of the model cars can be directly adjusted by moving them relative to each other or in opposite directions when the magnet is not locked. Therefore, a control circuit can be set inside the model car to control the movement of the model car and the on / off state of the coil. A remote control device for sending and receiving signals to the control circuit can be set up so that the user can control the connection between the model cars through the remote control device. The disassembly and assembly are time-saving and labor-saving, and the efficiency is high, resulting in a good user experience. Attached Figure Description
[0013] Figure 1 This is a top view of the present invention;
[0014] Figure 2 yes Figure 1 Cross-sectional view at point AA;
[0015] Figure 3 yes Figure 1 Enlarged view at point B in the middle;
[0016] Figure 4 yes Figure 2 Enlarged view at point C;
[0017] Figure 5 This is a schematic diagram of the movement of the two movable hooks before they are hooked together;
[0018] Figure 6 This is a diagram showing how two movable hooks engage to lock the mechanism.
[0019] The attached figures are labeled as follows:
[0020] 1. Model car body; 2. U-shaped shell; 21. Curved edge; 22. Fixing plate; 3. Movable hook; 31. Hook block; 311. Semi-circular guide surface; 32. Limiting block; 321. Protrusion; 322. Curved surface; 323. First locking step; 33. Shaft connection hole; 331. Pin; 4. Hollow winding post; 41. Coil; 42. Magnet; 421. Second locking step; 422. Third locking step; 43. Elastic reset component; 44. Limiting baffle. Detailed Implementation
[0021] The present invention will be further illustrated below with reference to specific examples and accompanying drawings.
[0022] like Figures 1-6 As shown, this utility model describes a remote-controlled electromagnetic hook for a model car, including two sets of hook assemblies fixed to both ends of the model car body 1. Each hook assembly includes a U-shaped housing 2 with an outward opening, a movable hook 3 axially connected to one end of the opening of the U-shaped housing 2, and a driving component disposed on the inward side of the U-shaped housing 2. A hollow winding post 4 communicating with the interior of the U-shaped housing is provided in the middle of the inward side of the U-shaped housing 2. The driving component includes an energized coil 41 wound on the winding post, a magnet 42 located inside the hollow winding post 4, and an elastic reset member 43. The length of the magnet 42 is greater than the length of the coil 41, and the elastic reset member 43 abuts between the ends of the magnet 42 and the hollow winding post 4. The movable hook 3 includes a hook block 31 and a limiting block 32 arranged perpendicularly to each other. A shaft connection hole 33 is provided at the connection between the hook block 31 and the limiting block 32. A protrusion 321 extends from the middle of the limiting block 32 toward the middle of the U-shaped housing 2. The end of the protrusion 321 near the hook block 31 forms an outwardly convex arc surface 322 with the limiting block 32. The end of the protrusion 321 away from the hook block 31 forms a first locking step 323 with the limiting block 32. The protrusion 321 protrudes and appears at the opening of the U-shaped housing 2 as the hook block 31 swings outward. The end of the magnet 42 that abuts against the movable hook 3 is provided with a second locking step 421 adapted to the shape of the first locking step 323.
[0023] When coil 41 is not energized, magnet 42 protrudes from the U-shaped housing 2 under the action of elastic reset member 43. The second locking step 421 on magnet 42 and the first locking step 323 of movable hook 3 are in abutting state. At this time, the hooking blocks 31 of movable hook 3 on the two model car bodies 1 are in a locked state and are limited in their hooking state. When coil 41 is energized, it forms a magnetic field and forms an attractive magnetic force with magnet 42. Magnet 42 is driven to move towards the end closer to coil 41. At the same time, elastic reset member 43 is compressed and stored, and the locking state between the second locking step 421 and the first locking step 323 disappears, thereby releasing the lock. External force pulls the two model car bodies 1 to move relative to each other, and the two hooking blocks 31 move along the U-shaped housing 2. Rotating the shaft end can drive the movable hook 3 to rotate as a whole, so that one end of the protrusion 321 on the limiting block 32 with the outer convex arc surface 322 protrudes and appears at the opening of the U-shaped housing 2. If the two movable hooks 3 are to be relocked, the two model car bodies 1 only need to be brought close to each other so that the hook parts abut. When moving further, the hook parts abut against the arc surface 322 of the protrusion 321 and apply force, so that the limiting block 32 rotates, driving the movable hook 3 to rotate as a whole, so that the protrusion 321 retracts into the U-shaped housing 2, and the two hook parts re-hook each other. Then disconnect the electrical connection of the coil 41, so that after the coil 41 is demagnetized, the elastic reset member 43 drives the magnet 42 to reset and pop out, and the second locking step 421 re-locks with the first locking step 323 on the limiting block 32.
[0024] This invention adjusts the locking state of the magnet 42 to the movable hook 3 by remotely controlling the on / off state of the coil 41. The hooking state of the movable hooks 3 between the model cars can be directly adjusted by moving them relative to each other or in opposite directions when the magnet 42 is not locked. Therefore, a control circuit can be set in the model car body 1 to control the movement of the model car and the on / off state of the coil 41. A remote control device for sending and receiving signals to the control circuit can be set up so that the user can control the connection between the model cars through the remote control device. The disassembly and assembly are time-saving and labor-saving, and the efficiency is high, resulting in a good user experience.
[0025] like Figure 4 As shown, in this embodiment of the present invention, the elastic reset member 43 is a spring. The magnet 42 has a third locking step 422 at the end that is away from the movable hook 3. One end of the spring is fixed inside the hollow winding column 4 at the end away from the U-shaped housing 2, and the other end of the spring abuts and is fixed to the third locking step 422 of the magnet 42. By using the spring to connect one end of the magnet 42 to the inner wall of the hollow winding column 4, it is convenient for the magnet 42 to be reset. Moreover, the spring has a fast deformation recovery speed, and the magnet 42 can be quickly reset after the coil 41 is de-energized, thereby improving the locking speed of the movable hook 3.
[0026] To facilitate the quick sliding of the hook block 31 into contact with the protrusion 321 after contact, such as Figure 3 and Figure 5 As shown, in this embodiment of the utility model, the edge of the hook block 31 away from the shaft hole 33 is a semi-circular guide surface 311. When the edges of the two hook blocks 31 abut, the two semi-circular guide surfaces 311 also abut against each other. The abutment stability between them is poor, making it easier to slide and achieve the function of guiding movement, thus avoiding jamming.
[0027] like Figure 3 As shown, in this embodiment of the present invention, the other end of the U-shaped housing 2 has an arc-shaped chamfer 21 extending obliquely away from the end with the movable hook 3 connected to the shaft. This allows the hook block 31 to slide into the shaft hole 33 along the arc-shaped chamfer 21, further preventing edge jamming from affecting the connection efficiency.
[0028] To enhance the hooking strength between the two hooking blocks 31, in this embodiment of the utility model, the arc surface 322 of the protrusion 321 forms a semi-enclosed structure with the angle between the hooking block 31 and the limiting block 32. The shape of the semi-enclosed structure matches the shape of the end of the hooking block 31 away from the shaft connection hole 33 (please refer to...). Figure 5 and Figure 6 The two hook blocks 31 fit together to enhance connection stability.
[0029] In this embodiment of the present invention, the U-shaped housing 2 has two parallel fixing plates 22 at one end for shaft connection. The fixing plates 22 have fixing holes, the shape of which is adapted to the shaft connection hole 33. The fixing plates 22 and the metal hook of the movable hook 3 are fixed in the fixing holes and the connecting holes by means of pins 331. By setting the shaft connection end of the U-shaped housing 2 to be composed of two fixing plates 22, the limiting block 32 of the movable hook 3 can move freely between the two fixing plates 22 when rotating. As a result, one end of the protrusion 321 on the limiting block 32 can protrude and appear at the opening on the outside of the fixing plate 22, so that when connecting two model cars, the hook block 31 can abut against the opposite protrusion 321 and push to rotate.
[0030] In this embodiment of the invention, the coupler assemblies at both ends of the model car body 1 are arranged in a centrally symmetrical manner. If the coupler assemblies at both ends are arranged symmetrically, it is necessary to pay attention to whether the coupler assemblies are opposite when assembling two model car bodies 1. However, in this embodiment of the invention, the coupler assemblies are arranged in a centrally symmetrical manner at both ends, so that the coupler assemblies at one end of any two model car bodies can be paired and connected, avoiding the impact of calibration on assembly efficiency and improving the flexibility and convenience of assembly.
[0031] In this embodiment of the utility model, the outer walls of both ends of the hollow winding post 4 are provided with limiting baffles 44, so that when the coil 41 is wound on the outside of the hollow winding post 4, it only needs to be positioned between the two limiting baffles 44, which is convenient for installation. After installation, since the limiting baffles 44 are in the blocking position at both ends, the coil 41 is prevented from sliding off the hollow winding post 4, thus improving the connection stability.
[0032] The above embodiments are merely preferred embodiments of the present utility model and are only used to explain the present utility model, not to limit the present utility model. Any changes, substitutions, combinations, simplifications, modifications, etc., made by those skilled in the art without departing from the spirit and principle of the present utility model shall be considered equivalent substitutions and shall be included within the protection scope of the present utility model.
Claims
1. A remotely controlled electromagnetic hook for a model car, characterized in that: The system includes two sets of coupler assemblies fixed at both ends of the model car body (1). Each coupler assembly includes an outward-facing U-shaped housing (2), a movable hook (3) axially connected to one end of the opening of the U-shaped housing (2), and a drive unit disposed on the inward-facing side of the U-shaped housing (2). A hollow winding post (4) communicating with the interior of the U-shaped housing is provided in the middle of the inward-facing side of the U-shaped housing. The drive unit includes an energized coil (41) wound on the winding post, a magnet (42) located inside the hollow winding post (4), and an elastic reset member (43). The length of the magnet (42) is greater than the length of the coil (41). The elastic reset member (43) abuts between the ends of the magnet (42) and the hollow winding post (4). The movable hook (3) includes hook blocks (3) arranged perpendicularly to each other. 1) and limiting block (32), the connection between hook block (31) and limiting block (32) is provided with shaft connection hole (33), the middle part of the limiting block (32) extends towards the middle of the U-shaped shell (2) with a protrusion (321), the end of the protrusion (321) near the hook block (31) and the limiting block (32) form an outward convex arc surface (322), the end of the protrusion (321) away from the hook block (31) and the limiting block (32) form a first locking step (323), the protrusion (321) protrudes and appears at the opening of the U-shaped shell (2) as the hook block (31) swings outward, and the end of the magnet (42) that abuts against the movable hook (3) is provided with a second locking step (421) adapted to the shape of the first locking step (323).
2. The remotely controlled electromagnetic hook for a model car according to claim 1, characterized in that: The elastic reset component (43) is a spring. The magnet (42) has a third locking step (422) at the end that is away from the movable hook (3). One end of the spring is fixed inside the hollow winding post (4) at the end away from the U-shaped shell (2), and the other end of the spring abuts and is fixed to the third locking step (422) of the magnet (42).
3. The remotely controlled electromagnetic hook for a model car according to claim 1, characterized in that: The edge of the hook block (31) away from the shaft hole (33) is a semi-circular guide surface (311).
4. The remote-controlled electromagnetic hook for a model car according to claim 1, characterized in that: The U-shaped shell (2) has an arc-shaped chamfer (21) extending obliquely away from the end with the movable hook (3) connected to the shaft at the other end.
5. The remotely controlled electromagnetic hook for a model car according to claim 1, characterized in that: The arc surface (322) of the protrusion (321) forms a semi-enclosed structure with the angle between the hook block (31) and the limiting block (32), and the shape of the semi-enclosed structure matches the shape of the end of the hook block (31) away from the shaft hole (33).
6. The remotely controlled electromagnetic hook for a model car according to claim 1, characterized in that: The U-shaped housing (2) has two parallel fixing plates (22) at one end for shaft connection. The fixing plates (22) have fixing holes, the shape of which is adapted to the shaft connection hole (33). The fixing plates (22) and the movable hook (3) metal hook are fixed in the fixing holes and shaft connection hole (33) by means of pins (331).
7. The remotely controlled electromagnetic hook for a model car according to claim 1, characterized in that: The coupler assemblies at both ends of the model vehicle body (1) are arranged in a centrally symmetrical manner.
8. The remotely controlled electromagnetic hook for a model car according to claim 1, characterized in that: Limiting baffles (44) are provided on the outer walls of both ends of the hollow winding column (4).