Electromagnet mechanism and safety belt locking device

Abstract

The application relates to an electromagnet mechanism and a safety belt locking device. The electromagnet mechanism comprises a main body part, a connector and a positioning protrusion. The main body part comprises an electromagnetic coil assembly, a lead-out terminal and a yoke plate, the electromagnetic coil assembly is electrically connected with the lead-out terminal, and the yoke plate is arranged on one side of the electromagnetic coil assembly; the connector comprises a support, the positioning protrusion and a conductive lead-out pin arranged on the support, the support is arranged on the side, opposite to the yoke plate, of the electromagnetic coil assembly, the conductive lead-out pin is electrically connected with the lead-out terminal, and the positioning protrusion has at least one, wherein the positioning protrusion is arranged on the support, the positioning protrusion is inserted in the electromagnetic coil assembly or the yoke plate in an interference fit mode, so as to limit the movement of the support relative to the main body part; and / or the positioning protrusion is arranged on at least one of the electromagnetic coil assembly and the yoke plate, and the positioning protrusion is inserted in the support in an interference fit mode, so as to limit the movement of the support relative to the main body part. The electromagnet mechanism is beneficial to connecting the lead-out terminal with the connector and is easy to assemble.

Description

Technical Field

[0001] This application relates to the field of electromagnetic technology, and in particular to an electromagnet mechanism and a seat belt locking device. Background Technology

[0002] In vehicles, the electromagnet mechanism is a crucial component of the seatbelt locking system. The seatbelt locking system comprises a ratchet, a locking element, and an electromagnet mechanism. The electromagnetic component in the electromagnet mechanism attracts the armature, causing the locking element to selectively engage with the ratchet teeth on the ratchet, thereby selectively blocking the seatbelt retractor.

[0003] In related technologies, electromagnet mechanisms include electromagnetic coil assemblies and connectors (such as circuit boards). The electromagnetic coil assembly is soldered to the conductive leads of the connector via lead-out terminals, achieving electrical connection and assembly between the lead-out terminals and the connector. During use, external electrical components are plugged into the connector, and the components achieve rapid electrical connection with the electromagnetic coil assembly through the connector. However, in related technologies, misalignment can easily occur when assembling the connector and lead-out terminals, especially when the electromagnet mechanism has multiple lead-out terminals. It is difficult to solder each lead-out terminal to the conductive leads on the connector, resulting in significant assembly difficulties for the electromagnet mechanism. Utility Model Content

[0004] Therefore, it is necessary to provide an electromagnet mechanism and a seat belt locking device to address the above problems, which facilitates the connection of the lead-out terminals to the connector and is easy to assemble.

[0005] On the one hand, an electromagnet mechanism is provided, comprising:

[0006] The main body includes an electromagnetic coil assembly, lead-out terminals, and a yoke plate. The electromagnetic coil assembly is electrically connected to the lead-out terminals, and at least a portion of the yoke plate is disposed on one side of the electromagnetic coil assembly.

[0007] A connector, comprising a support and conductive leads disposed on the support, the support being disposed on the side of the electromagnetic coil assembly opposite to the yoke plate, the conductive leads being electrically connected to the leads-out terminals;

[0008] A positioning protrusion, wherein the positioning protrusion has at least one;

[0009] Wherein, the positioning protrusion is provided on the support, and the positioning protrusion is interference-fitted into the electromagnetic coil assembly or the yoke plate to restrict the movement of the support relative to the main body; and / or,

[0010] The positioning protrusion is provided on at least one of the electromagnetic coil assembly and the yoke plate, and the positioning protrusion is interference-fitted into the support to restrict the movement of the support relative to the main body.

[0011] In one embodiment, the electromagnet mechanism further includes a limiting protrusion, which is spaced apart from the positioning protrusion. The limiting protrusion has at least one portion and is disposed on the support. The limiting protrusion is inserted into the electromagnetic coil assembly or the yoke plate; and / or...

[0012] The limiting protrusion is disposed on at least one of the electromagnetic coil assembly and the yoke plate, and the limiting protrusion is inserted into the support.

[0013] In one embodiment, the electromagnetic coil assembly includes a coil frame and a coil wound in a winding window of the coil frame, the coil being electrically connected to the lead-out terminal, at least a portion of the yoke plate being disposed in the winding window, and at least a portion of the support being disposed in the winding window.

[0014] In one embodiment, the positioning protrusion is provided on at least one of the electromagnetic coil assembly and the yoke plate, and the support is provided with a positioning recess, one end of the positioning protrusion being interference-fitted into the positioning recess.

[0015] In one embodiment, the coil frame includes a flange and a winding drum, one axial end of the winding drum is connected to the flange, the coil is wound around the outer periphery of the winding drum, the yoke plate includes a first plate and a second plate connected at an angle to the first plate, at least a portion of the first plate is disposed in the winding window, the support is located on the side of the winding drum away from the first plate, the second plate is disposed on the side of the flange away from the winding drum, the flange is provided with the limiting protrusion, the support is provided with the limiting recess, the limiting protrusion is inserted into the limiting recess, and the second plate is provided with the positioning protrusion.

[0016] In one embodiment, the coil frame has two flanges, and the axial ends of the winding bobbin are respectively connected to the two flanges. A winding window is formed between the two flanges. The second plate is located on one side of one of the flanges. Two positioning protrusions are provided. One of the two flanges is provided with a positioning protrusion, and the other is provided with a limiting protrusion. The second plate is provided with another positioning protrusion. The support is provided with two positioning recesses. The positioning protrusions and positioning recesses correspond one-to-one. The positioning protrusions are interference-fitted into the corresponding positioning recesses.

[0017] In one embodiment, the conductive lead protrudes at least partially from the outside of the support, and a fixing hole is provided at the portion of the conductive lead protruding from the outside of the support, and the lead terminal passes through the fixing hole.

[0018] In one embodiment, the conductive lead is welded into the mounting hole.

[0019] In one embodiment, the support is provided with interconnected plug holes and sockets. The sockets are used for plugging in external electrical devices. The conductive leads include a first segment, a second segment, and a third segment connected in sequence. The first segment protrudes from the outside of the support. The fixing hole is provided on the first segment. The second segment is snapped into the plug hole. The third segment is provided in the socket. The third segment is used for electrical connection with the electrical device.

[0020] In one embodiment, the second segment includes a conductive body and a first snap-fit ​​protrusion protruding from the conductive body, the first snap-fit ​​protrusion snapping into the sidewall of the insertion hole.

[0021] And / or, the support further includes a support body and a second snap-fit ​​protrusion, the support body is provided with the insertion hole, the first section protrudes from the support body, the second snap-fit ​​protrusion protrudes from the side wall of the insertion hole, and the second snap-fit ​​protrusion snaps into the second section.

[0022] In one embodiment, when the second segment includes the first snap-fit ​​protrusion and the support includes the second snap-fit ​​protrusion, the conductive body is provided with a second snap-fit ​​recess for the second snap-fit ​​protrusion to snap into, the sidewall of the insertion hole is provided with a first snap-fit ​​recess for the first snap-fit ​​protrusion to snap into, the second snap-fit ​​recess is located on the side of the conductive body away from the first snap-fit ​​protrusion, and the first snap-fit ​​recess is opposite to the first snap-fit ​​protrusion.

[0023] In one embodiment, the second segment further includes a barb structure protruding from one side of the conductive body, the barb structure abutting against the inner wall of the insertion hole.

[0024] In one embodiment, the insertion hole includes a first hole, a second hole, and a third hole distributed sequentially. The third hole is close to the insertion port. The second segment passes through the first hole, the second hole, and the third hole sequentially along the direction from the first segment toward the third segment. There is a first step structure between the first hole and the second hole, and a second step structure between the second hole and the third hole. The conductive body is provided with a first step surface and a second step surface respectively. The barb structure is located between the first step surface and the second step surface. The first step surface abuts against the first step structure, and the second step surface abuts against the second step structure.

[0025] In one embodiment, the main body further includes an active member that can be attracted by the electromagnetic coil assembly. One end of the active member is connected to the yoke plate, and the other end is disposed on one side of the electromagnetic coil assembly. The end of the active member away from the yoke plate can move toward or away from the electromagnetic coil assembly.

[0026] In one embodiment, the main body further includes an auxiliary monitoring component for monitoring the state of the active component. The auxiliary monitoring component includes an auxiliary stationary contact and an auxiliary moving contact located on one side of the auxiliary stationary contact. The auxiliary moving contact can move toward or away from the auxiliary stationary contact. During the movement of the active component toward the electromagnetic coil assembly, it can squeeze the auxiliary moving contact until the auxiliary moving contact closes or separates from the auxiliary stationary contact. The auxiliary moving contact and the auxiliary stationary contact are respectively electrically connected to the lead-out terminal.

[0027] On the other hand, a seat belt locking device is also provided, including a ratchet, a locking member for engaging with the ratchet teeth on the ratchet, and the aforementioned electromagnet mechanism. The ratchet is disposed on one side of the electromagnet mechanism, and the locking member is connected to the driving member of the electromagnet mechanism. Under the drive of the electromagnetic coil assembly, the driving member can drive the locking member to move away from or towards the ratchet.

[0028] In one embodiment, the locking member is fixedly connected to the driving member.

[0029] In one embodiment, the locking member and the armature of the driving member are an integral structure;

[0030] Alternatively, the locking member is riveted to the armature of the driving member;

[0031] Alternatively, the locking element may be welded to the armature of the driving element.

[0032] In one embodiment, the locking member has a guide surface and a stop surface on opposite sides, both of which are located at the end of the locking member away from the driving member, and are used to abut against the ratchet.

[0033] In one embodiment, the locking member includes a connecting section, a mounting section, and a locking section connected in sequence. The locking section and the mounting section are respectively arranged at an angle to the connecting section. The end of the mounting section away from the connecting section is connected to the driving member. The guide surface and the stop surface are both disposed at the end of the locking section away from the mounting section.

[0034] The aforementioned electromagnet mechanism, through an interference fit of a positioning protrusion into at least one of the electromagnetic coil assembly, the yoke plate, and the support, restricts the movement of the support relative to the main body. This positioning of the support restricts the movement of the conductive leads relative to the leads-out terminals. Under the action of the positioning protrusion, the support and the main body are positioned before the leads-out terminals and conductive leads are electrically connected. This facilitates the electrical connection between the conductive leads on the support and the leads-out terminals of the main body, reducing the difficulty of assembling the electromagnet mechanism. Furthermore, placing the support on the side opposite to the electromagnetic coil assembly and the yoke plate, with portions of the support and yoke plate distributed on opposite sides of the electromagnetic coil assembly, fully utilizes the space on both sides of the electromagnetic coil assembly, optimizing the components of the electromagnet mechanism and improving its compactness. Attached Figure Description

[0035] Figure 1 This is a perspective view of the electromagnet mechanism and locking member at an angle in some embodiments of this application.

[0036] Figure 2 This is a top view of the electromagnet mechanism and locking element in some embodiments of this application.

[0037] Figure 3 for Figure 2 A cross-sectional view along the AA direction.

[0038] Figure 4 for Figure 1 A three-dimensional view of the electromagnet mechanism and locking element after the removal of the support and conductive lead-out pin.

[0039] Figure 5 This is a perspective view of the connector in some embodiments of this application from one angle.

[0040] Figure 6 This is a structural diagram of the support in some embodiments of this application.

[0041] Figure 7This is a perspective view from another angle after removing the support and conductive lead-out foot of the electromagnet mechanism and locking member in some embodiments of this application.

[0042] Figure 8 This is a perspective view of the electromagnet mechanism and locking member in some embodiments of this application after removing the support, conductive lead-out foot and moving spring from another angle.

[0043] Figure 9 This is a perspective view of the removal support and conductive lead-out foot of the electromagnet mechanism and locking member in some other embodiments of this application from a rear angle.

[0044] Figure 10 This is a perspective view of each conductive lead-out terminal in some embodiments of this application from one angle.

[0045] Figure 11 This is a perspective view of the various conductive leads in some embodiments of this application from another angle.

[0046] Figure 12 for Figure 2 A cross-sectional view of BB.

[0047] Figure 13 This is a structural diagram of the seat belt locking device in some embodiments of this application.

[0048] In the picture:

[0049] 100. Electromagnetic mechanism; 101. Main body; 102. Connector; 200. Ratchet; 201. Ratchet tooth; 300. Locking element; 301. Connecting section; 302. Locking section; 3021. Stop surface; 3022. Guide surface; 303. Mounting section; 1. Electromagnetic coil assembly; 11. Coil frame; 111. Flange; 112. Winding drum; 113. Core component; 2. Driving element; 21. Moving spring; 22. Armature; 221. Armature body; 222. Pressing block; 3. Yoke plate; 31. First plate; 32. Second plate; 4. Positioning protrusion; 5. Support; 51. Plug-in 511. Hole; 512. First Hole; 513. Third Hole; 52. Support Body; 53. Positioning Recess; 54. Insert; 55. First Step Structure; 56. Second Step Structure; 57. Limiting Recess; 6. Conductive Lead-Out Pin; 61. First Section; 611. Fixing Hole; 62. Second Section; 621. Conductive Body; 622. Barb Structure; 623. First Snap-In Protrusion; 624. Second Snap-In Recess; 625. First Step Surface; 626. Second Step Surface; 63. Third Section; 7. Lead-Out Terminal; 8. Auxiliary Monitoring Component; 81. Auxiliary Moving Contact; 82. Auxiliary Stationary Contact; 9. Limiting Protrusion. Detailed Implementation

[0050] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0051] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0052] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0053] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0054] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0055] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0056] See Figures 1 to 5 , Figure 1 A perspective view showing the angle between the electromagnet mechanism and the locking member in one embodiment of this application is shown; Figure 2 A top view of the electromagnet mechanism and locking element in some embodiments of this application is shown; Figure 3 It shows Figure 2 Sectional view along the AA direction; Figure 4 It shows Figure 1 A three-dimensional view of the electromagnet mechanism and locking element after the removal of the support and conductive lead-out pin; Figure 5 A perspective view of a connector from one angle is shown in some embodiments of this application. An embodiment of this application provides an electromagnet mechanism 100. This electromagnet mechanism 100 is used in a seatbelt locking device in an automobile. The electromagnet mechanism 100 includes a main body 101, a connector 102, and a positioning protrusion 4. The main body 101 includes an electromagnetic coil assembly 1, a lead-out terminal 7, and a yoke plate 3. The electromagnetic coil assembly 1 is electrically connected to the lead-out terminal 7, and at least a portion of the yoke plate 3 is disposed on one side of the electromagnetic coil assembly 1. The connector 102 includes a support 5 and conductive lead-out feet 6 disposed on the support 5. The support 5 is disposed on the side opposite to the electromagnetic coil assembly 1 and the yoke plate 3, and the conductive lead-out feet 6 are electrically connected to the lead-out terminal 7. The positioning protrusion 4 has at least one portion. In this embodiment, the positioning protrusion 4 is disposed on at least one of the electromagnetic coil assembly 1 and the yoke plate 3. The positioning protrusion 4 is interference-fitted into the support 5 to restrict movement of the support 5 relative to the main body 101.

[0057] In this type of electromagnet mechanism 100, the positioning protrusion 4 is interference-fitted into the support 5, restricting the movement of the support 5 relative to the main body 101. This positions the support 5, thereby restricting the movement of the conductive lead 6 relative to the lead terminal 7. Under the action of the positioning protrusion 4, the support 5 and the main body 101 are positioned before the lead terminal 7 and the conductive lead 6 are electrically connected. This facilitates the electrical connection between the conductive lead 6 on the support 5 and the lead terminal 7 of the main body 101, reducing the difficulty of assembling the electromagnet mechanism 100. Furthermore, by placing the support 5 on the side opposite to the electromagnetic coil assembly 1 and the yoke plate 3, with portions of the support 5 and yoke plate 3 distributed on opposite sides of the electromagnetic coil assembly 1, the space on both sides of the electromagnetic coil assembly 1 can be fully utilized, optimizing the components in the electromagnet mechanism 100 and improving its compactness.

[0058] In this embodiment, there are at least two positioning protrusions 4. A portion of the positioning protrusions 4 are disposed on the electromagnetic coil assembly 1, and the remaining portion of the positioning protrusions 4 are disposed on the yoke plate 3. All positioning protrusions 4 are interference-fitted into the support 5.

[0059] Of course, in other embodiments, only one positioning protrusion 4 may be provided, which is disposed on the electromagnetic coil assembly 1 or the yoke plate 3 and is interference-fitted into the support 5; or, at least two positioning protrusions 4 may be provided, with a portion of the positioning protrusions 4 disposed on the electromagnetic coil assembly 1 and interference-fitted into the support 5, and the remaining portion of the positioning protrusions 4 disposed on the support 5 and interference-fitted into the electromagnetic coil assembly 1 or the yoke plate 3; or, positioning protrusions 4 may be provided only on the yoke plate 3 and interference-fitted into the support 5; or, positioning protrusions 4 may be provided only on the support 5 and interference-fitted into the electromagnetic coil assembly 1 or the yoke plate 3. In actual implementation, the position and number of positioning protrusions 4 can be flexibly adjusted as needed, and no specific limitation is made here on the position and number of positioning protrusions 4.

[0060] In some embodiments, see Figure 4 , Figure 5 and Figure 7The electromagnet mechanism 100 also includes a limiting protrusion 9, which is spaced apart from the positioning protrusions 4, and the limiting protrusion 9 has at least one. In one example, the limiting protrusion 9 is disposed on the support 5 and inserted into the electromagnetic coil assembly 1 or the yoke plate 3. It is understood that when the number of positioning protrusions 4 is small, when the positioning protrusions 4 are interference-fitted into the electromagnetic coil assembly 1, the yoke plate 3, or the support 5, it may cause the main body 101 to wobble relative to the support 5. By providing the limiting protrusion 9 in the electromagnet mechanism 100 and inserting the limiting protrusion 9 into the electromagnetic coil assembly 1 or the yoke plate 3, after the main body 101 and the support 5 are coarsely positioned using the positioning protrusions 4, the main body 101 and the support 5 are precisely positioned using the limiting protrusion 9. This further facilitates the electrical connection between the conductive leads on the support 5 and the leads 7 of the main body 101, further reducing the difficulty of assembling the electromagnet mechanism 100.

[0061] In another example, the limiting protrusion 9 is provided on at least one of the electromagnetic coil assembly 1 and the yoke plate 3. The limiting protrusion 9 is inserted into the support 5. By providing the limiting protrusion 9 on the electromagnetic coil assembly 1 and the yoke plate 3, the precise positioning of the main body 101 and the support 5 can also be achieved through the cooperation and insertion of the limiting protrusion 9 and the support 5. This further facilitates the electrical connection between the conductive lead-out pin on the support 5 and the lead-out terminal 7 of the main body 101, further reducing the difficulty of assembling the electromagnet mechanism 100.

[0062] It should be noted that the number and specific position of the limiting protrusions 9 can be set according to actual needs, and no specific restrictions are imposed on the number and specific position of the limiting protrusions 9 here.

[0063] In some embodiments, see Figure 1 and Figure 3 The electromagnetic coil assembly 1 includes a coil frame 11 and a coil (not shown in the figure). The coil is wound in the winding window of the coil frame 11 and is electrically connected to the lead-out terminal 7. At least a portion of the yoke plate 3 and at least a portion of the support 5 are disposed in the winding window, which allows for the utilization of the space in the winding window of the coil frame 11 and improves the compactness of the various components in the electromagnet mechanism 100.

[0064] In this embodiment, see Figure 4 and Figure 5 The positioning protrusion 4 is provided on at least one of the electromagnetic coil assembly 1 and the yoke plate 3. The support 5 is provided with a positioning recess 53. The end of the positioning protrusion 4 away from the coil frame 11 is interference-fitted into the positioning recess 53. The positioning of the support 5 is achieved by the positioning protrusion 4 interference-fitted into the positioning recess 53.

[0065] See Figure 1 and Figure 4 The coil frame 11 includes a flange 111 and a winding drum 112. One axial end of the winding drum 112 is connected to the flange 111, and the coil is wound around the outer circumference of the winding drum 112. Figure 3 The yoke plate 3 includes a first plate 31 and a second plate 32 connected at an angle to the first plate 31. At least a portion of the first plate 31 is disposed in the winding window. The support 5 is located on the side of the winding drum 112 away from the first plate 31, that is, the winding drum 112 is located between the support 5 and the first plate 31. The second plate 32 is disposed on the side of the flange 111 away from the winding drum 112. A limiting protrusion 9 is provided on the flange 111, and a limiting recess 57 is provided on the support 5. The limiting protrusion 9 is inserted into the limiting recess 57. The second plate 32 is provided with a positioning protrusion 4. This design is beneficial for optimizing the distribution position of the positioning protrusion 4 and the limiting protrusion 9.

[0066] The electromagnetic coil assembly 1 also includes a magnetic conductor inserted into the winding drum 112. The magnetic conductor is an iron core 113. The winding drum 112 provides mounting space for the coil and the magnetic conductor. The flange 111 provides support for the winding drum 112 and the limiting protrusion 9, and the second plate 32 provides support for the positioning protrusion 4. In this embodiment, the first plate 31 is perpendicular to the second plate 32, the second plate 32 is attached to one side of the flange 111, and one end of the magnetic conductor is inserted into the second plate 32 to fix the position of the yoke plate 3.

[0067] See Figure 4 , Figure 3 and Figure 9 In this embodiment, the coil frame 11 has two flanges 111, which are spaced apart and parallel to each other. The axial ends of the winding drum 112 are connected to the two flanges 111 respectively, and a winding window is formed between the two flanges 111. The second plate 32 is located on one side of one of the flanges 111. The magnetic conductor is inserted from one of the flanges 111 and passes through the winding drum 112 and the other flange 111 in sequence before connecting to the second plate 32. Two positioning protrusions 4 are provided. One of the two flanges 111 is provided with a positioning protrusion 4, and the other is provided with a limiting protrusion 9. The second plate 32 is provided with another positioning protrusion 4. The support 5 is provided with two positioning recesses 53. The positioning protrusions 4 and the positioning recesses 53 correspond one-to-one, and the positioning protrusions 4 are interference-fitted into the corresponding positioning recesses 53. The provision of two positioning protrusions 4, which are respectively inserted into the two positioning recesses 53 on the support 5, helps to improve the positioning accuracy between the main body 101 and the support 5. By setting the positioning protrusion 4 and the limiting protrusion 9 on two different flanges 111, the stress on the electromagnetic coil assembly 1 from the support 5 can be distributed on the two flanges 111, preventing the stress from being too concentrated on the coil frame 11.

[0068] In one example, there is one limiting protrusion 9, and two positioning protrusions 4 are arranged in a triangle with the limiting protrusion 9, so that there are three limiting positions arranged in a triangle between the support 5 and the main body 101. In this way, with a smaller number of positioning protrusions 4 and limiting protrusions 9, the support 5 can achieve a better positioning effect and ensure the clamping strength between the support 5 and the main body 101.

[0069] Of course, in other embodiments, the number of positioning protrusions 4 and limiting protrusions 9 and their positions on the main body 101 can be flexibly adjusted as needed. There are no specific restrictions on the number of positioning protrusions 4 and limiting protrusions 9 or their positions.

[0070] In some embodiments, see Figure 1 and Figure 5 The conductive lead 6 protrudes at least partially from the outside of the support 5. A fixing hole 611 is provided on the protruding portion of the conductive lead 6 from the support 5. The lead terminal 7 passes through the fixing hole 611. This allows the lead terminal 7 to be positioned relative to the conductive lead 6 through the fixing hole 611, facilitating electrical connection between the lead terminal 7 and the conductive lead 6. In actual implementation, the diameter of the fixing hole 611 is larger than the cross-sectional dimension of the lead terminal 7, which facilitates the smooth insertion of the lead terminal 7 into the fixing hole 611.

[0071] In this embodiment, the lead-out terminal 7 is welded into the fixing hole 611, so that the lead-out terminal 7 and the conductive lead-out pin 6 are welded and fixed. On the one hand, the conductive lead-out pin 6 and the lead-out terminal 7 are electrically connected. On the other hand, the conductive lead-out pin 6 and the lead-out terminal 7 are fixed by welding to prevent the conductive lead-out pin 6 from separating from the lead-out terminal 7. Furthermore, the welding of the conductive lead-out pin 6 and the lead-out terminal 7 provides a fixing effect for the support 5, so that the support 5 is fixed to the main body 101 and prevents the support 5 from detaching from the main body 101.

[0072] In some embodiments, see Figure 6 The support 5 is provided with interconnected insertion holes 51 and sockets 54. Sockets 54 are used for connecting external electrical components. (See reference...) Figure 10 , Figure 11 and Figure 12The conductive lead 6 includes a first segment 61, a second segment 62, and a third segment 63 connected in sequence. The first segment 61 protrudes from the outside of the support 5, and a fixing hole 611 is provided in the first segment 61. The second segment 62 is snapped into the insertion hole 51, and the third segment 63 is provided in the socket 54, which is used for electrical connection with an electrical device. It is understood that there are at least two conductive leads 6, spaced apart. The external electrical device has a plug-in portion for insertion into the socket 54, and the plug portion has at least two conductive holes. The conductive leads 6 correspond one-to-one with the conductive holes. When the external electrical device is inserted into the socket 54, the conductive lead 6 is inserted into the corresponding conductive hole, realizing the electrical connection between the electromagnet mechanism 100 and the external electrical device. In this embodiment, the connection between the conductive lead 6 and the support 5 is achieved by the second segment 62 snapping into the insertion hole 51. Since the first segment 61 protrudes from the outside of the support 5, and the fixing hole 611 is set on the first segment 61, the position interference of the support 5 is avoided when the conductive lead 6 is soldered to the lead terminal 7.

[0073] In this embodiment, the second segment 62 includes a conductive body 621 and a first snap-fit ​​protrusion 623 protruding from the conductive body 621. The first snap-fit ​​protrusion 623 snaps into the sidewall of the insertion hole 51. The support 5 also includes a support body 52 and a second snap-fit ​​protrusion (not shown in the figure). The support body 52 is provided with an insertion hole 51. The first segment 61 protrudes from the support body 52. ​​A positioning recess 53 is provided on the support body 52. ​​The second snap-fit ​​protrusion protrudes from the sidewall of the insertion hole 51 and snaps into the second segment 62. The positioning recess 53 is provided on the support body 52. ​​The sidewall of the insertion hole 51 is provided with a first snap-fit ​​recess. The first snap-fit ​​protrusion 623 snaps into the first snap-fit ​​recess. The conductive body 621 is provided with a second snap-fit ​​recess 624. The second snap-fit ​​protrusion snaps into the second snap-fit ​​recess 624. The first locking recess is for the first locking protrusion 623 to engage, and the second locking recess 624 is for the second locking protrusion to engage. Under the action of the locking protrusion, the second segment 62 is engaged with the support 5. Since locking protrusions are provided on both the conductive body 621 and the sidewall of the insertion hole 51, it helps to enhance the engagement strength between the second segment 62 and the support 5, and reduces the risk of the conductive lead 6 loosening from the support 5.

[0074] In one example, four conductive leads 6 are provided, and four insertion holes 51 are provided. The conductive leads 6 and insertion holes 51 correspond one-to-one, and the second segment 62 of the conductive lead 6 is engaged in the corresponding insertion hole 51. In actual implementation, the first engaging protrusion 623 of the four conductive leads 6 all protrude in the same direction, so that the first engaging protrusion 623 engages with the side wall of the hole on the same side in the corresponding insertion hole 51, thereby enabling the four conductive leads 6 to be connected to the support 5 as a whole.

[0075] In this embodiment, both the second snap-fit ​​recess 624 and the first snap-fit ​​protrusion 623 are formed by stamping. The second snap-fit ​​recess 624 is disposed on the side of the conductive body 621 away from the first snap-fit ​​protrusion 623, and the first snap-fit ​​recess is opposite to the first snap-fit ​​protrusion 623. In this way, when the first snap-fit ​​protrusion 623 is formed by stamping the conductive body 621, the second snap-fit ​​recess 624 is also formed on the conductive body 621 at the same time, which is beneficial for processing the conductive lead 6.

[0076] Of course, in other embodiments, only the second segment 62 may be provided, including a conductive body 621 and a first snap-fit ​​protrusion 623 protruding from the conductive body 621, the first snap-fit ​​protrusion 623 snapping with the side wall of the insertion hole 51; or, only the support 5 may be provided, including a support body 52 and a second snap-fit ​​protrusion, the support body 52 being provided with an insertion hole 51, the first segment 61 protruding from the support body 52, the second snap-fit ​​protruding from the side wall of the insertion hole 51, the second snap-fit ​​protrusion snapping with the second segment 62.

[0077] In some embodiments, see Figure 10 , Figure 11 and Figure 12 The second section 62 also includes a barb structure 622 protruding from one side of the conductive body 621. The barb structure 622 abuts against the inner wall of the insertion hole 51. The barb structure 622 between the conductive bodies 621 can increase the contact friction between the conductive body 621 and the support 5, which in turn helps to increase the bonding force between the conductive lead 6 and the support 5, and further reduces the risk of the conductive lead 7 falling off the support 5.

[0078] See Figure 12The insertion hole 51 includes a first hole 511, a second hole, and a third hole 512 arranged sequentially. The third hole 512 is close to the insertion port 54. The second segment 62 has the first hole 511, the second hole (not shown in the figure), and the third hole 512 sequentially inserted along the direction from the first segment 61 towards the third segment 63. There is a first step structure 55 between the first hole 511 and the second hole, and a second step structure 56 between the second hole and the third hole 512. The conductive body 621 is provided with a first step surface 625 and a second step surface 626 respectively. The barb structure 622 is located between the first step surface 625 and the second step surface 626. The first step surface 625 abuts against the first step structure 55, and the second step surface 626 abuts against the second step structure 56. When assembling the conductive lead 6 and the support 5, the first step surface 625 abuts against the first step structure 55, and the first step structure 55 is used as the reference surface for the conductive lead 6, which can limit the depth of the conductive lead 6 inserted into the insertion hole 51. Understandably, since the support 5 is made of plastic, the barbed structure 622 abuts against the inner wall of the insertion hole 51. During the process of inserting the conductive lead 6 into the insertion hole 51, the barbed structure 622 will scratch the inner wall of the insertion hole 51 and generate plastic debris. Since the first step surface 625 abuts against the first step structure 55 and the second step surface 626 abuts against the second step structure 56, the gap between the conductive lead 6 at the first step structure 55 and the second step structure 56 before the hole sidewall of the insertion hole 51 is small. Therefore, the debris generated by the scratching of the barbed structure 622 can be blocked in the part of the insertion hole 51 located between the first step structure 55 and the second step structure 56, preventing debris from being discharged from the first hole 511 and the third hole 512, reducing the risk of debris being discharged into the socket 54 and the outside of the support 5.

[0079] In some embodiments, see Figure 1 and Figure 3 The main body 101 also includes an active member 2 that can be attracted by the electromagnetic coil assembly 1. One end of the active member 2 is connected to the yoke plate 3, and the other end is located on one side of the electromagnetic coil assembly 1. The end of the active member 2 away from the yoke plate 3 can move towards or away from the electromagnetic coil assembly 1. It can be understood that the active member 2 has a certain elastic deformation capability. When the electromagnetic coil assembly 1 is energized, it is magnetic. Under the action of magnetic force, the electromagnetic coil assembly 1 attracts the active member 2, thereby driving the active member 2 to move towards the electromagnetic coil assembly 1, so that the active member 2 is attracted to one side of the electromagnetic coil assembly 1. When the electromagnetic coil assembly 1 is de-energized, the magnetism of the electromagnetic coil assembly 1 disappears, and the active member 2 moves away from the electromagnetic coil assembly 1 under the action of elasticity, realizing the reset of the active member 2.

[0080] See Figure 2The main body 101 also includes an auxiliary monitoring component 8 for monitoring the state of the active member 2. The auxiliary monitoring component 8 includes an auxiliary stationary contact 82 and an auxiliary moving contact 81 located on one side of the auxiliary stationary contact 82. The auxiliary moving contact 81 can move towards or away from the auxiliary stationary contact 82. During the movement of the active member 2 towards the electromagnetic coil assembly 1, it can squeeze the auxiliary moving contact 81 until the auxiliary moving contact 81 closes or separates from the auxiliary stationary contact 82. The auxiliary moving contact 81 and the auxiliary stationary contact 82 are respectively electrically connected to lead-out terminals 7. In this embodiment, the main body 101 includes four lead-out terminals 7, each corresponding to a conductive lead 6. The lead-out terminals 7 are soldered to their corresponding conductive leads 6. The coils in the electromagnetic coil assembly 1 are respectively electrically connected to two lead-out terminals 7. In this embodiment, the auxiliary moving contact 81 has a certain elastic deformation capability. During the movement of the active member 2 toward the direction of the electromagnetic coil assembly 1, it can squeeze the auxiliary moving contact 81 until the auxiliary moving contact 81 separates from the auxiliary stationary contact 82. During the movement of the active member 2 toward the direction of the electromagnetic coil assembly 1, the squeezing force of the active member 2 on the auxiliary moving contact 81 gradually decreases until the active member 2 separates from the auxiliary moving contact 81. This allows the auxiliary moving contact 81 to reset under elastic action.

[0081] In this embodiment, the driving member 2 includes a movable spring 21 and an armature 22 disposed on one side of the electromagnetic coil assembly 1. One end of the iron core 113 protrudes from the flange 111 towards the armature 22. One end of the movable spring 21 is connected to the yoke plate 3, and the other end is connected to the armature 22. The armature 22 can move towards or away from the electromagnetic coil assembly 1. When the electromagnetic coil assembly 1 drives the driving member 2 to move, it overcomes the elastic force of the movable spring 21 and drives the armature 22 to be attracted to one side of the iron core 113. When the magnetism of the electromagnetic coil assembly 1 disappears, the movable spring 21, under the action of the elastic force, drives the armature 22 to move away.

[0082] The armature 22 includes an armature body 221 and a pressing block 222 protruding from one side of the armature body 221. One end of the armature body 221 is connected to the moving spring 21. The armature body 221 can fit against one side of the electromagnetic coil assembly 1. The pressing block 222 is used to press and assist the moving contact 81 to move.

[0083] In practical applications, the coil is energized or de-energized by the vehicle's ECU (Electronic Control Unit) module. When the coil is energized, the armature 22 is attached to one side of the iron core 113, and the armature 22 presses down on the auxiliary moving contact 81, causing the auxiliary moving contact 81 to separate from the auxiliary stationary contact 82. At this time, the auxiliary monitoring component 8 has no signal output. When the coil is de-energized, the electromagnetic coil assembly 1 releases the armature 22, causing the armature 22 to reset and no longer exert pressure on the auxiliary moving contact 81. This allows the auxiliary moving contact 81 to contact the auxiliary stationary contact 82, at which time the auxiliary monitoring component 8 has a signal output. By monitoring whether the auxiliary monitoring component 8 has a signal output, it is determined whether the electromagnet mechanism 100 is damaged.

[0084] In some embodiments, a seatbelt locking device is also provided, see [link to relevant documentation]. Figure 1 , Figure 3 , Figure 9 and Figure 13The device includes a ratchet 200, a locking member 300 for engaging with the ratchet teeth 201 on the ratchet 200, and an electromagnet mechanism 100 as described in any of the above embodiments. The ratchet 200 is disposed on one side of the electromagnet mechanism 100, and the locking member 300 is connected to the driving member 2 of the electromagnet mechanism 100. Under the drive of the electromagnetic coil assembly 1, the driving member 2 can drive the locking member 300 to move away from or towards the ratchet 200. It is understood that the ratchet 200 is connected to a seat belt retractor, and the rotation of the ratchet 200 can drive the seat belt retractor to operate, thereby realizing the winding and unwinding of the seat belt. When the electromagnetic coil assembly 1 is magnetic, the driving member 2 moves towards the electromagnetic coil assembly 1 under the drive of the magnetic force until the driving member 2 is in contact with one side of the electromagnetic coil assembly 1. During the movement of the driving member 2, it drives the stop member to move away from the ratchet 200, which can separate the stop member from the ratchet 200 and release the engagement with the ratchet 201. When the magnetism of the electromagnetic coil assembly 1 disappears, the driving member 2 resets under the action of elasticity and moves away from the electromagnetic coil assembly 1. During this process, it drives the locking member 300 to move towards the ratchet 200, which can achieve the engagement of the locking member 300 with the ratchet 201 on the ratchet 200. In this type of seatbelt locking device, the positioning protrusion 4 is interference-fitted into the electromagnetic coil assembly 1 or the support 5, restricting the movement of the support 5 relative to the main body 101. This positions the support 5, thereby restricting the movement of the conductive lead 6 relative to the lead terminal 7. Under the action of the positioning protrusion 4, the support 5 and the main body 101 are positioned, and then the lead terminal 7 and the conductive lead 6 are electrically connected. This facilitates the electrical connection between the conductive lead 6 on the support 5 and the lead terminal 7 of the main body 101, thereby reducing the assembly difficulty of the seatbelt locking device. Furthermore, when the electromagnetic coil assembly 1 includes a coil frame 11, at least a portion of the yoke plate 3 and at least a portion of the support 5 are provided in the winding window. This allows for the utilization of the space in the winding window of the coil frame 11, resulting in a more compact distribution of components within the limited space of the seatbelt locking device.

[0085] Among them, the locking member 300 is fixedly connected to the driving member 2, which reduces the risk of relative shaking between the locking member 300 and the driving member 2, and enables the locking member 300 to reliably engage with the ratchet 201 on the ratchet 200.

[0086] See Figure 7 When the active component 2 includes a moving spring 21 and an armature 22, the locking component 300 and the armature 22 are an integral structure. This eliminates the need for additional assembly of the locking component 300 and the armature 22, which helps to save on the assembly process of the seat belt locking device.

[0087] Of course, in other embodiments, see [reference] Figure 8Alternatively, the locking element 300 and the driving element 2 can be riveted together, or the locking element 300 and the driving element 2 can be welded together to achieve a fixed connection between the locking element 300 and the driving element 2.

[0088] In some embodiments of the seatbelt locking device, see Figure 3 and Figure 9 The locking member 300 has a guide surface 3022 and a stop surface 3021 on opposite sides. Both the guide surface 3022 and the stop surface 3021 are located at the end of the locking member 300 furthest from the driving member 2, and they abut against the ratchet 201. When the magnetism of the electromagnetic coil assembly 1 disappears and the locking member 300 is engaged with the ratchet 200, the stop surface 3021 blocks the ratchet 201 of the ratchet 200, preventing the ratchet 200 from rotating along the stop surface 3021 side towards the guide surface 3022 side, and only allowing it to rotate along the guide surface 3022 side towards the stop surface 3021 side. In this embodiment, the locking member 300 is a rigid metal part. This material provides high structural strength to meet the stress applied by the rotation of the ratchet 200, reducing the risk of deformation of the locking member 300.

[0089] Furthermore, the locking member 300 includes a connecting section 301, a mounting section 303, and a locking section 302 connected in sequence. The locking section 302 and the mounting section 303 are respectively set at an angle to the connecting section 301. The end of the mounting section 303 away from the connecting section 301 is connected to the driving member 2. The guide surface 3022 and the stop surface 3021 are both located at the end of the locking section 302 away from the mounting section 303. The guide surface 3022 is inclined from the connecting section 301 along the locking section 302 toward the stop surface 3021. Setting the locking section 302 and the mounting section 303 at an angle to the connecting section 301 allows the locking member 300 to better utilize the space between the driving member 2 and the ratchet 200, which helps to reduce the space occupied by the locking member 300.

[0090] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0091] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. An electromagnet mechanism, characterized in that, include: The main body includes an electromagnetic coil assembly, lead-out terminals, and a yoke plate. The electromagnetic coil assembly is electrically connected to the lead-out terminals, and at least a portion of the yoke plate is disposed on one side of the electromagnetic coil assembly. A connector, comprising a support and conductive leads disposed on the support, the support being disposed on the side of the electromagnetic coil assembly opposite to the yoke plate, the conductive leads being electrically connected to the leads-out terminals; A positioning protrusion, wherein the positioning protrusion has at least one; Wherein, the positioning protrusion is provided on the support, and the positioning protrusion is interference-fitted into the electromagnetic coil assembly or the yoke plate to restrict the movement of the support relative to the main body; and / or, The positioning protrusion is provided on at least one of the electromagnetic coil assembly and the yoke plate, and the positioning protrusion is interference-fitted into the support to restrict the movement of the support relative to the main body.

2. The electromagnet mechanism according to claim 1, characterized in that, The electromagnet mechanism further includes limiting protrusions, which are spaced apart from the positioning protrusions. At least one limiting protrusion is present and disposed on the support. The limiting protrusion is inserted into the electromagnetic coil assembly or the yoke plate; and / or... The limiting protrusion is disposed on at least one of the electromagnetic coil assembly and the yoke plate, and the limiting protrusion is inserted into the support.

3. The electromagnet mechanism according to claim 2, characterized in that, The electromagnetic coil assembly includes a coil frame and a coil, the coil being wound in a winding window of the coil frame, the coil being electrically connected to the lead-out terminal, at least a portion of the yoke plate being disposed in the winding window, and at least a portion of the support being disposed in the winding window.

4. The electromagnet mechanism according to claim 3, characterized in that, The positioning protrusion is provided on at least one of the electromagnetic coil assembly and the yoke plate, and the support is provided with a positioning recess, one end of the positioning protrusion being interference-fitted into the positioning recess.

5. The electromagnet mechanism according to claim 4, characterized in that, The coil frame includes a flange and a winding drum. One axial end of the winding drum is connected to the flange. The coil is wound around the outer periphery of the winding drum. The yoke plate includes a first plate and a second plate connected at an angle to the first plate. At least a portion of the first plate is disposed in the winding window. The support is located on the side of the winding drum away from the first plate. The second plate is disposed on the side of the flange away from the winding drum. The flange is provided with a limiting protrusion. The support is provided with a limiting recess. The limiting protrusion is inserted into the limiting recess. The second plate is provided with a positioning protrusion.

6. The electromagnet mechanism according to claim 5, characterized in that, The coil frame has two flanges, and the axial ends of the winding drum are respectively connected to the two flanges. A winding window is formed between the two flanges. The second plate is located on one side of one of the flanges. There are two positioning protrusions. One of the two flanges is provided with a positioning protrusion, and the other is provided with a limiting protrusion. The second plate is provided with another positioning protrusion. The support is provided with two positioning recesses. The positioning protrusions and positioning recesses correspond one-to-one. The positioning protrusions are interference-fitted into the corresponding positioning recesses.

7. The electromagnet mechanism according to any one of claims 1 to 6, characterized in that, The conductive lead protrudes at least partially from the outside of the support, and a fixing hole is provided at the part of the conductive lead protruding from the outside of the support, and the lead terminal passes through the fixing hole.

8. The electromagnet mechanism according to claim 7, characterized in that, The conductive lead is welded into the fixing hole.

9. The electromagnet mechanism according to claim 7, characterized in that, The support is provided with interconnected plug holes and sockets. The sockets are used for plugging in external electrical components. The conductive leads include a first segment, a second segment, and a third segment connected in sequence. The first segment protrudes from the outside of the support. The fixing hole is provided on the first segment. The second segment is snapped into the plug hole. The third segment is provided in the socket. The third segment is used for electrical connection with the electrical component.

10. The electromagnet mechanism according to claim 9, characterized in that, The second segment includes a conductive body and a first snap-fit ​​protrusion protruding from the conductive body, wherein the first snap-fit ​​protrusion snaps into the side wall of the insertion hole. And / or, the support further includes a support body and a second snap-fit ​​protrusion, the support body is provided with the insertion hole, the first section protrudes from the support body, the second snap-fit ​​protrusion protrudes from the side wall of the insertion hole, and the second snap-fit ​​protrusion snaps into the second section.

11. The electromagnet mechanism according to claim 10, characterized in that, When the second segment includes the first snap-fit ​​protrusion and the support includes the second snap-fit ​​protrusion, the conductive body is provided with a second snap-fit ​​recess for the second snap-fit ​​protrusion to snap into, and the side wall of the insertion hole is provided with a first snap-fit ​​recess for the first snap-fit ​​protrusion to snap into. The second snap-fit ​​recess is located on the side of the conductive body away from the first snap-fit ​​protrusion, and the first snap-fit ​​recess is opposite to the first snap-fit ​​protrusion.

12. The electromagnet mechanism according to claim 11, characterized in that, The second segment also includes a barb structure protruding from one side of the conductive body, the barb structure abutting against the inner wall of the insertion hole.

13. The electromagnet mechanism according to claim 12, characterized in that, The insertion hole includes a first hole, a second hole, and a third hole arranged in sequence. The third hole is close to the insertion port. The second segment passes through the first hole, the second hole, and the third hole in sequence along the direction from the first segment toward the third segment. There is a first step structure between the first hole and the second hole, and a second step structure between the second hole and the third hole. The conductive body is provided with a first step surface and a second step surface respectively. The barb structure is located between the first step surface and the second step surface. The first step surface abuts against the first step structure, and the second step surface abuts against the second step structure.

14. The electromagnet mechanism according to any one of claims 1 to 6, characterized in that, The main body also includes an active member that can be attracted by the electromagnetic coil assembly. One end of the active member is connected to the yoke plate, and the other end is disposed on one side of the electromagnetic coil assembly. The end of the active member away from the yoke plate can move towards or away from the electromagnetic coil assembly.

15. The electromagnet mechanism according to claim 14, characterized in that, The main body also includes an auxiliary monitoring component for monitoring the status of the active component. The auxiliary monitoring component includes an auxiliary stationary contact and an auxiliary moving contact located on one side of the auxiliary stationary contact. The auxiliary moving contact can move toward or away from the auxiliary stationary contact. During the movement of the active component toward the electromagnetic coil assembly, it can squeeze the auxiliary moving contact until the auxiliary moving contact closes or separates from the auxiliary stationary contact. The auxiliary moving contact and the auxiliary stationary contact are respectively electrically connected to the lead-out terminal.

16. A seatbelt locking device, characterized in that, The device includes a ratchet, a locking member for engaging with the ratchet teeth on the ratchet, and an electromagnet mechanism as described in any one of claims 1 to 15. The ratchet is disposed on one side of the electromagnet mechanism, the locking member is connected to the driving member of the electromagnet mechanism, and the driving member can drive the locking member to move away from or towards the ratchet under the drive of the electromagnetic coil assembly.

17. The seatbelt locking device according to claim 16, characterized in that, The locking element is fixedly connected to the driving element.

18. The seatbelt locking device according to claim 17, characterized in that, The locking element and the armature of the driving element are an integral structure; Alternatively, the locking member is riveted to the armature of the driving member; Alternatively, the locking element may be welded to the armature of the driving element.

19. The seatbelt locking device according to claim 18, characterized in that, The locking member has a guide surface and a stop surface on opposite sides. The guide surface and the stop surface are both located at the end of the locking member away from the driving member, and the guide surface and the stop surface are respectively used to abut against the ratchet.

20. The seatbelt locking device according to claim 19, characterized in that, The locking member includes a connecting section, a mounting section, and a locking section connected in sequence. The locking section and the mounting section are respectively set at an angle to the connecting section. The end of the mounting section away from the connecting section is connected to the driving member. The guide surface and the stop surface are both located at the end of the locking section away from the mounting section.

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