Integrated anti-theft coil for vehicle
By adopting an integrated anti-theft coil design, using an integral injection molding structure and pin connection, the problem of non-compactness of existing anti-theft coils is solved, achieving stable and reliable power supply and signal transmission, and improving the overall performance of the anti-theft function.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 乐清市星火汽车电子有限公司
- Filing Date
- 2025-08-14
- Publication Date
- 2026-06-05
AI Technical Summary
The existing anti-theft coil structure is not compact enough, resulting in unstable component connections and affecting the realization of the anti-theft function.
It adopts an integrated anti-theft coil design, including a mounting shell, circuit board, coil and pins. The side shell, upper shell and bottom shell are connected by an integrated injection molded structure. The pins enable power supply, signal sensing and signal output. Combined with the tension structure and winding groove design, it ensures a stable connection between the coil and the circuit board.
This achieves a stable connection between the coil and the circuit board, improves the compactness and stability of the structure, avoids component interference, and enhances the reliability and convenience of the anti-theft function.
Smart Images
Figure CN224323965U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of vehicle parts technology, and in particular to an integrated anti-theft coil for vehicles. Background Technology
[0002] The car's anti-theft antenna serves to transmit energy and identify the anti-theft code. This means the vehicle key can only start the car if it matches the anti-theft code, improving the car's anti-theft performance. Meanwhile, with the upgrading of automotive electrical systems, keyless entry and keyless start systems are becoming increasingly common in new vehicles. Typical keyless systems communicate with the key via an in-car anti-theft antenna. Only after confirming the key's proximity to the vehicle does it send a signal to the ECU for keyless entry / lock identification. Similarly, keyless start identification only occurs after confirming the key is inside the vehicle, allowing the ignition lock cylinder to function normally. Achieving this anti-theft function requires the cooperation of multiple components. Properly connecting these components ensures the stability of the function, and existing anti-theft coil structures are not compact enough. Utility Model Content
[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a compact and stable integrated anti-theft coil for vehicles.
[0004] The technical solution adopted by this utility model to solve its technical problem is an integrated anti-theft coil for vehicles, including a mounting shell. A circuit board and a coil are mounted on the mounting shell. A pair of first pins are provided between the circuit board and the coil. A pair of second pins and a pair of third pins are provided between the circuit board and an external plug. The mounting shell includes a side shell, an upper shell, and a bottom shell. The side shell, the upper shell, and the bottom shell are all integrally injection molded structures. A mounting cavity is provided on the right end face of the side shell, and the circuit board is disposed in the mounting cavity. The first pins... One end of the second pin and one end of the third pin are both inserted into the mounting cavity. The upper housing is disposed on the upper end surface of the side housing. A hollow cylindrical winding portion is provided on the upper end surface of the upper housing. The central axis of the winding portion is disposed relative to the rear end of the side housing. The coil is disposed on the winding portion. The other end of the first pin is inserted into the right end surface of the upper housing. The bottom housing is disposed on the lower end surface of the side housing. A connecting cavity is provided on the bottom housing. The other ends of the second pin and the third pin are both inserted into the connecting cavity.
[0005] The advantages of the above technical solution are as follows: The plug is inserted into the connection cavity, and power is supplied to the circuit board via the second pin. The circuit board then supplies a certain current to the coil via the first pin, making it safer to use. When the key approaches the coil, it affects the current flowing through the coil. According to the law of electromagnetic induction, the key moving in a magnetic field generates a corresponding induced electromotive force, which is sensed by the sensing components on the circuit board. The third pin then outputs a corresponding signal through the plug, thereby determining whether a matching key is nearby, and controlling the vehicle to start or perform other corresponding unlocking operations. Therefore, the structure of the upper shell, side shell, and bottom shell, combined with... The first, second, and third pins connect the coil, circuit board, and plug in an orderly manner, effectively realizing the functions of power supply, signal sensing, and signal output. This improves integration, resulting in a simple, compact, and stable structure that is easy to manufacture. The hollow cylindrical winding section is directly fitted onto the ignition core, making installation more compact. Furthermore, the upper and lower housings are integrally formed on the upper and lower sides of the side housing, respectively. Compared to using component assembly, the overall structure is more stable and the positions are more reasonable, avoiding interference. The other ends of the second and third pins are located inside the connection cavity, making them more convenient to use.
[0006] Furthermore, the upper housing is also provided with two sets of tensioning structures, each tensioning structure including a first pressure block and a second pressure block. The first pressure block is disposed on one side of the coil, and the second pressure block is disposed on the other side of the first pin. The lead wire of the coil is connected to the other end of the first pin through the first pressure block and the second pressure block.
[0007] The advantages of the above technical solution are: after the leads at both ends of the coil are brought out, the first and second pressure blocks can hold the leads in place to tighten them, making them less prone to loosening, thereby increasing the reliability of the coil.
[0008] Furthermore, the winding portion is provided with an upper ring protrusion and a lower ring protrusion. The lower ring protrusion is positioned directly below the upper ring protrusion, and the two cooperate on the winding portion to form a winding groove. The first pressing block is positioned below the lower ring protrusion, and the peripheral wall surface of the lower ring protrusion is also provided with a corresponding through groove.
[0009] The advantages of the above technical solution are as follows: by setting a winding groove, the coil is wound inside the winding groove, thereby effectively limiting the winding position of the coil and achieving the purpose of precise use. Moreover, by using the upper ring protrusion and the lower ring protrusion to form the winding groove, the coil can be effectively protected without increasing the thickness of the winding part or the depth of the winding groove. The through-groove setting allows the lead wire to pass through the groove. Therefore, when assembling the corresponding cover, the lead wire of the coil will not be squeezed and damaged. The structural design is reasonable.
[0010] Furthermore, the winding portion has a plurality of first weight reduction cavities on the peripheral wall surface below the lower ring protrusion, and the lower end surface of the upper shell seat has a plurality of second weight reduction cavities at the bottom position corresponding to the winding portion, and the first weight reduction cavities and the second weight reduction cavities are staggered.
[0011] The advantages of adopting the above technical solution are: by setting the first and second weight reduction cavities, the overall mass is reduced without affecting the strength of the winding part, and the structural design is reasonable.
[0012] Furthermore, a pair of first support plates and a pair of second support plates are provided on the inner wall of the mounting cavity. The first support plates and the second support plates are used to support the circuit board, and a positioning plug is provided on one side wall of the second support plate. A first reinforcing rib is provided between the positioning plug and the mounting cavity.
[0013] The advantages of the above technical solution are as follows: the first support plate and the second support plate with the positioning plug effectively limit the position of the circuit board. Therefore, the connection between the circuit board and one end of the first pin, the second pin and the third pin is convenient and stable. The setting of the first reinforcing rib plate makes the positioning plug stronger and less prone to breakage during the insertion of the circuit board, making it more reasonable to use.
[0014] Furthermore, the mounting cavity is provided with a first connecting block and a second connecting block. The first connecting block is for one end of the first pin to pass through, and the second connecting block is for one end of the second pin and the third pin to pass through. The second connecting block is provided in the mounting cavity at a position relative to the bottom shell seat.
[0015] The advantages of adopting the above technical solution are as follows: the first connecting block effectively fixes one end of the first pin in the mounting cavity, making the connection with the circuit board more stable; the second connecting block effectively fixes one end of the second pin and the third pin in the mounting cavity, making the connection with the circuit board more stable; the use of the first pin, the second pin, and the third pin is more reasonable; and the second connecting block also makes the bottom housing stronger.
[0016] Furthermore, a second reinforcing rib is provided between the side shell seat and the upper shell seat, and a third reinforcing rib is provided between the side shell seat and the bottom shell seat.
[0017] The advantages of adopting the above technical solution are as follows: the setting of the second reinforcing rib plate improves the strength of the upper shell and the side shell, and the setting of the third reinforcing rib plate improves the strength of the bottom shell and the side shell. Therefore, the overall performance of the mounting shell is excellent.
[0018] Furthermore, the lower end face of the upper shell is provided with an elastic hook, and the front or rear face of the side shell is provided with mounting feet, and the mounting feet are provided with mounting holes.
[0019] The advantages of adopting the above technical solution are: by setting elastic hooks, the upper shell seat is connected to the ignition core; by setting mounting feet, the side shell seat is connected to the vehicle body, resulting in high installation stability and reducing problems such as loosening and falling off due to vibration. Attached Figure Description
[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0021] Figure 2 The mounting shell structure of this utility model is viewed as follows. Figure 1 ;
[0022] Figure 3 The mounting shell structure of this utility model is viewed as follows. Figure 2 ;
[0023] Figure 4 The mounting shell structure of this utility model is viewed as follows. Figure 3 .
[0024] In the diagram: 1-Mounting shell, 2-Circuit board, 3-Coil, 4-First pin, 5-Second pin, 6-Third pin, 7-Side shell seat, 8-Upper shell seat, 9-Bottom shell seat, 10-Mounting cavity, 11-Winding section, 12-Connecting cavity, 13-First wire pressing block, 14-Second wire pressing block, 15-Upper ring protrusion, 16-Lower ring protrusion, 17-Winding groove, 18-Through groove, 19-First weight-reducing cavity, 20-Second weight-reducing cavity, 21-First support plate, 22-Second support plate, 23-Positioning plug, 24-First reinforcing rib plate, 25-First connecting block, 26-Second connecting block, 27-Second reinforcing rib plate, 28-Third reinforcing rib plate, 29-Elastic hook, 30-Mounting support foot. Detailed Implementation
[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model and / or the prior art, the specific implementation methods of this utility model will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings described below are merely some embodiments of this utility model. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without creative effort. Furthermore, references to orientation only indicate the relative positional relationship between the components, not their absolute positional relationship.
[0026] Please see Figures 1 to 4As shown, an integrated anti-theft coil for vehicles includes a mounting housing 1, on which a circuit board 2 and a coil 3 are mounted. The circuit board 2 houses sensing components. A pair of first pins 4 are located between the circuit board 2 and the coil 3. A pair of second pins 5 and a pair of third pins 6 are located between the circuit board 2 and an external plug. The first pins 4 and second pins 5 are power pins, and the third pin 6 is a signal pin. The mounting housing 1 includes a side housing 7, an upper housing 8, and a bottom housing 9. The side housing 7, upper housing 8, and bottom housing 9 are all integrally injection molded structures. A mounting cavity 10 is provided on the right end face of the side housing 7, and the circuit board 2 is disposed within the mounting cavity 10. The first pins 4, second pins 5, and third pins 6 are... One end of the third pin 6 is inserted into the mounting cavity 10. The upper housing 8 is positioned on the upper surface of the side housing 7. A hollow cylindrical winding portion 11 is provided on the upper surface of the upper housing 8. The winding portion 11 is sleeved on the ignition core, and the central axis of the winding portion 11 is positioned relative to the rear end of the side housing 7. This arrangement prevents the side housing 7 from interfering with the installation. The coil 3 is located on the winding portion 11. The other end of the first pin 5 is inserted into the right end surface of the upper housing 8. The bottom housing 9 is located on the lower end surface of the side housing 7. The bottom housing 9 is provided with a connecting cavity 12. The other ends of the second pin 5 and the third pin 6 are inserted into the connecting cavity 12. In the above structure, the plug is inserted into the connecting cavity 12. Inside circuit board 2, power is supplied to the circuit board 2 via the second pin 5. The circuit board 2 then supplies a certain current to the coil 3 via the first pin 5 for enhanced safety. When the key approaches the coil 3, it affects the current flowing through the coil 3. According to the law of electromagnetic induction, the key moving in a magnetic field generates a corresponding induced electromotive force, which is sensed by the sensing components on the circuit board 2. The third pin 6 then outputs a corresponding signal through the connector to determine if a matching key is nearby, thereby controlling the vehicle to start or performing other corresponding unlocking operations. Therefore, the structure of the upper housing 8, side housing 7, and bottom housing 9 is adopted, along with the first pin 4 and the second pin 5. The second pin 5 and the third pin 6 connect the coil 3, circuit board 2, and plug in an orderly manner, thus realizing the functions of power supply, signal sensing, and signal output in a reasonable way. This improves the integration, makes the structure simple and compact, and ensures high stability and ease of production. The hollow cylindrical winding part 11 is directly sleeved on the ignition core, making the installation more compact. The upper shell 8 and the lower shell 9 are integrally formed on the upper and lower sides of the side shell 7, respectively. Compared with the component combination method, the overall structure is more stable and the position is more reasonable, avoiding interference. The other ends of the second pin 5 and the third pin 6 are both located in the connecting cavity 12, making them more convenient to use.
[0027] In this embodiment, the upper housing 8 is also provided with two sets of tensioning structures. The tensioning structures include a first wire pressing block 13 and a second wire pressing block 14. The first wire pressing block 13 is disposed on one side of the coil 3, and the second wire pressing block 14 is disposed on the other side of the first pin 4. The lead wire of the coil 3 is connected to the other end of the first pin 4 through the first wire pressing block 13 and the second wire pressing block 14. More specifically, the first wire pressing block 13 is disposed on the winding part 11, and the second wire pressing block 13 is disposed on the right end face of the upper housing 8. In the above structure, the coil 3 will lead out two leads. After the leads at both ends of the coil 3 are led out, the first wire pressing block 13 and the second wire pressing block 14 can press against the leads to tighten the leads, making the leads less likely to loosen, thereby increasing the reliability of the coil 2.
[0028] In this embodiment, the winding section 11 is provided with an upper ring protrusion 15 and a lower ring protrusion 16. The lower ring protrusion 16 is positioned directly below the upper ring protrusion 15, and the two cooperate on the winding section 11 to form a winding groove 17. The first pressing block 13 is positioned below the lower ring protrusion 16. The peripheral wall surface of the lower ring protrusion 16 is also provided with a corresponding through groove 18. More specifically, the through groove 18 is an oblique structure, and the left side of the first pressing block 13 is a corresponding oblique surface. In the above structure, by providing the winding groove 17, the coil 3 The coil 2 is wound within the winding groove 17, thereby effectively limiting the winding position and achieving precise use. Furthermore, the winding groove 17 is formed by the cooperation of the upper ring protrusion 15 and the lower ring protrusion 16, which effectively protects the coil 3 without increasing the thickness of the winding part 11 or the depth of the winding groove 17. The through groove 18 allows the lead wire to pass through it, so the lead wire of the coil 3 will not be squeezed and damaged when the corresponding cover is assembled. The structural design is reasonable.
[0029] In this embodiment, the winding part 11 has a plurality of first weight-reducing cavities 19 on the peripheral wall surface below the lower ring protrusion 16, and the lower end surface of the upper shell 8 has a plurality of second weight-reducing cavities 20 at the bottom position corresponding to the winding part 11. The first weight-reducing cavities 19 and the second weight-reducing cavities 20 are staggered. In the above structure, by setting the first weight-reducing cavities 19 and the second weight-reducing cavities 20, the overall mass is reduced without affecting the strength of the winding part 11, and the structural design is reasonable.
[0030] In this embodiment, a pair of first support plates 21 and a pair of second support plates 22 are also provided on the inner wall of the mounting cavity 10. The pair of first support plates 21 and the pair of second support plates 22 are arranged diagonally. The first support plates 21 and the second support plates 22 are used to support the circuit board 2. A positioning plug 23 is also provided on one side wall of the second support plate 22. A first reinforcing rib plate 24 is provided between the positioning plug 23 and the mounting cavity 10. In the above structure, the first support plate 21 and the second support plate 22 with the positioning plug 23 effectively limit the position of the circuit board 2. Therefore, the connection between the circuit board 2 and one end of the first pin 4, the second pin 5 and the third pin 6 is convenient and stable. The setting of the first reinforcing rib plate 24 makes the positioning plug 23 stronger and less prone to breakage during the insertion of the circuit board 2, making its use more reasonable.
[0031] In this embodiment, the mounting cavity 10 is provided with a first connecting block 25 and a second connecting block 26. The first connecting block 25 allows one end of the first pin 4 to pass through, and the second connecting block 26 allows one end of the second pin 5 and the third pin 6 to pass through. The second connecting block 26 is provided in the mounting cavity 10 at a position relative to the bottom shell 9. In the above structure, the first connecting block 25 effectively fixes one end of the first pin 4 in the mounting cavity 10, making the connection with the circuit board 2 more stable. The second connecting block 26 effectively fixes one end of the second pin 5 and the third pin 6 in the mounting cavity 10, making the connection with the circuit board 2 more stable. The use of the first pin 4, the second pin 5, and the third pin 6 is more reasonable. At the same time, the second connecting block 26 also makes the bottom shell 9 more robust.
[0032] In this embodiment, a second reinforcing rib 27 is provided between the side shell seat 7 and the upper shell seat 8, and a third reinforcing rib 28 is provided between the side shell seat 7 and the bottom shell seat 9. In the above structure, the provision of the second reinforcing rib 27 improves the strength of the upper shell seat 8 and the side shell seat 7, and the provision of the third reinforcing rib 27 improves the strength of the bottom shell seat 9 and the side shell seat 7. Therefore, the overall performance of the mounting shell 1 is excellent.
[0033] In this embodiment, the lower end face of the upper housing 8 is provided with elastic hooks 29, and multiple elastic hooks 29 are provided. The front or rear face of the side housing 7 is provided with mounting feet 30, and the mounting feet 30 are provided with mounting through holes. In the above structure, the upper housing 8 is connected to the ignition core by setting the elastic hooks 29, and the side housing 7 is connected to the vehicle body by setting the mounting feet 30. The installation stability is high, and problems such as loosening and falling off due to vibration are reduced.
[0034] In this embodiment, a wire clamping groove is formed between the inner side of the second wire clamping block 14 and the second reinforcing rib plate 27, and the lead wire of the coil 2 passes through the wire clamping groove and is connected to the other end of the first pin 4.
[0035] In this embodiment, the outer wall surface of the second reinforcing rib plate 27, as well as the peripheral wall surfaces of the side shell seat 7 and the upper shell seat 8, are also provided with buckles for installing the cover shell.
[0036] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such modifications and substitutions should be considered within the protection scope of the present invention.
Claims
1. An integrated anti-theft coil for vehicles, comprising a mounting housing (1), on which a circuit board (2) and a coil (3) are mounted, a pair of first pins (4) are provided between the circuit board (2) and the coil (3), and a pair of second pins (5) and a pair of third pins (6) are provided between the circuit board (2) and an external plug, characterized in that: The mounting housing (1) includes a side housing (7), an upper housing (8), and a bottom housing (9). The side housing (7), the upper housing (8), and the bottom housing (9) are all integrally injection molded. A mounting cavity (10) is provided on the right end face of the side housing (7). The circuit board (2) is disposed within the mounting cavity (10). One end of the first pin (4), the second pin (5), and the third pin (6) all pass through the mounting cavity (10). The upper housing (8) is positioned on the upper end face of the side housing (7). The upper shell (8) has a hollow cylindrical winding part (11) on its upper end surface. The central axis of the winding part (11) is arranged relative to the rear end of the side shell (7). The coil (3) is arranged on the winding part (11). The other end of the first pin (4) passes through the right end surface of the upper shell (8). The bottom shell (9) is arranged on the lower end surface of the side shell (7). The bottom shell (9) has a connecting cavity (12). The other ends of the second pin (5) and the third pin (6) pass through the connecting cavity (12).
2. The integrated anti-theft coil for vehicles according to claim 1, characterized in that: The upper housing (8) is also provided with two sets of tensioning structures. The tensioning structures include a first pressure block (13) and a second pressure block (14). The first pressure block (13) is arranged on one side of the coil (3), and the second pressure block (14) is arranged on the other side of the first pin (4). The lead wire of the coil (3) is connected to the other end of the first pin (4) through the first pressure block (13) and the second pressure block (14).
3. The integrated anti-theft coil for vehicles according to claim 2, characterized in that: The winding portion (11) is provided with an upper ring protrusion (15) and a lower ring protrusion (16). The lower ring protrusion (16) is positioned directly below the upper ring protrusion (15), and the two cooperate on the winding portion (11) to form a winding groove (17). The first pressing block (13) is positioned below the lower ring protrusion (16). The peripheral wall surface of the lower ring protrusion (16) is also provided with a corresponding through groove (18).
4. The integrated anti-theft coil for vehicles according to claim 3, characterized in that: The winding part (11) has a plurality of first subtractive cavities (19) on the peripheral wall surface below the lower ring protrusion (16), and the lower end surface of the upper shell (8) has a plurality of second subtractive cavities (20) at the bottom position corresponding to the winding part (11), and the first subtractive cavities (19) and the second subtractive cavities (20) are staggered.
5. The integrated anti-theft coil for vehicles according to claim 1, characterized in that: The inner wall of the mounting cavity (10) is also provided with a pair of first support plates (21) and a pair of second support plates (22). The first support plates (21) and the second support plates (22) are used to support the circuit board (2). A positioning plug (23) is also provided on one side wall of the second support plate (22). A first reinforcing rib plate (24) is provided between the positioning plug (23) and the mounting cavity (10).
6. The integrated anti-theft coil for vehicles according to claim 1, characterized in that: The mounting cavity (10) is provided with a first connecting block (25) and a second connecting block (26). The first connecting block (25) allows one end of the first pin (4) to pass through, and the second connecting block (26) allows one end of the second pin (5) and the third pin (6) to pass through. The second connecting block (26) is provided in the mounting cavity (10) at a position relative to the bottom shell seat (9).
7. The integrated anti-theft coil for vehicles according to claim 1, characterized in that: A second reinforcing rib (27) is provided between the side shell seat (7) and the upper shell seat (8), and a third reinforcing rib (28) is provided between the side shell seat (7) and the bottom shell seat (9).
8. The integrated anti-theft coil for vehicles according to claim 1, characterized in that: The lower end face of the upper shell (8) is provided with an elastic hook (29), and the front or rear face of the side shell (7) is provided with a mounting foot (30), and the mounting foot (30) is provided with a mounting hole.