Electromagnet mechanism, safety belt locking device and vehicle

Abstract

The application relates to an electromagnet mechanism, a safety belt locking device and a vehicle. The electromagnet mechanism comprises an electromagnet assembly, a driving piece, a yoke plate and a blocking protrusion. The electromagnet assembly comprises a coil holder and a magnetic conducting piece, the coil holder comprises a winding drum and a flange, the flange is arranged at one end of the winding drum in the axial direction, and the pole surface of the magnetic conducting piece protrudes from the side of the flange away from the winding drum; at least part of the driving piece is arranged at the side of the flange away from the winding drum, when the electromagnetic force of the electromagnet assembly changes, the driving piece can move towards the pole surface of the magnetic conducting piece until the driving piece is attracted to the magnetic conducting piece, or the driving piece can move away from the pole surface of the magnetic conducting piece to be separated from the magnetic conducting piece; the yoke plate is connected with the driving piece; the blocking protrusion is arranged between the driving piece and the magnetic conducting piece, the blocking protrusion is used for keeping a gap between the driving piece and the pole surface of the magnetic conducting piece, and the electromagnet mechanism can quickly respond.

Description

Technical Field

[0001] This application relates to the field of electromagnetic technology, and in particular to an electromagnet mechanism, a seat belt locking device, and a vehicle. 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 electromagnet mechanism drives the locking element to selectively engage with the ratchet teeth on the ratchet, thereby selectively blocking the seatbelt retractor.

[0003] In related technologies, the electromagnet mechanism includes an electromagnetic component, a yoke plate, and an active component connected to the yoke plate. The electromagnetic component includes a coil frame, enameled wire wound on the coil frame, and an iron core component disposed within the coil frame. The yoke plate is disposed on one side of the coil frame, and the armature is connected to the yoke plate via a moving spring. A locking element is disposed at the end of the armature away from the yoke plate. When the enameled wire is energized, the armature is attracted and abuts against the pole face of the iron core component, causing the armature to move the locking element away from the ratchet, thereby releasing the locking element from obstructing the seatbelt retractor. When the enameled wire is de-energized, the elastic action of the moving spring drives the armature away from the pole face of the iron core component, causing the armature to move the locking element closer to the ratchet and engage with the ratchet teeth, thus preventing the seatbelt retractor from operating.

[0004] However, the electromagnet mechanism in the relevant technology has the following shortcomings: after the enameled wire is de-energized, the separation speed between the armature and the iron core is slow, resulting in a slow response of the electromagnet mechanism. Utility Model Content

[0005] Therefore, it is necessary to provide an electromagnet mechanism and a seat belt locking device that can respond quickly to the above problems.

[0006] Therefore, it is necessary to provide a vehicle that can quickly lock the seat belt in response to the above problems.

[0007] On the one hand, an electromagnet mechanism is provided, comprising:

[0008] An electromagnetic assembly, comprising a coil frame and a magnetic conductor, wherein the coil frame comprises a winding drum and a flange, the flange being disposed at one end of the winding drum along its axial direction, and a portion of the magnetic conductor passing through the winding drum, the pole face of the magnetic conductor protruding from the flange on the side opposite to the winding drum;

[0009] An active member, at least a portion of which is disposed on the side of the flange facing away from the winding drum, when the electromagnetic force of the electromagnetic assembly changes, the active member can move toward the pole face of the magnetic conductor until it is attracted to the magnetic conductor, or the active member can move away from the pole face of the magnetic conductor and disengage from the magnetic conductor.

[0010] Yoke plate, the yoke plate being connected to the driving member; and

[0011] A blocking protrusion is disposed between the active member and the magnetic conductive member, and the blocking protrusion is used to maintain a gap between the pole surfaces of the active member and the magnetic conductive member.

[0012] A blocking protrusion, the blocking protrusion having at least one, wherein at least one of the magnetic conductor, the flange and the active member is provided with the blocking protrusion.

[0013] In one embodiment, the blocking protrusion is disposed on the active member, and the blocking protrusion at least partially protrudes from the side of the active member facing the flange, the side of the blocking protrusion facing the flange being used to contact the pole surface of the magnetic conductor.

[0014] In one embodiment, the blocking protrusions are at least two, and the at least two blocking protrusions are spaced apart.

[0015] In one embodiment, an elastic buffer is further included, at least a portion of which is located in the region between the pole face of the magnetic conductor and the driving member, and the blocking protrusion is located between the connection between the driving member and the yoke plate and the elastic buffer.

[0016] In one embodiment, the elastic buffer is disposed on the side of the flange facing away from the winding drum and along the axial direction of the winding drum, the elastic buffer at least partially protrudes from the pole face of the magnetic conductor, and the side of the elastic buffer facing away from the flange is used to contact the active member.

[0017] In one embodiment, a mounting member connected to the elastic buffer is further included, with one end of the mounting member away from the elastic buffer mounted in the flange.

[0018] In one embodiment, the flange has an internal mounting groove, the groove opening of which extends to the side of the flange facing away from the winding drum. One end of the mounting member is engaged in the mounting groove, and the other end passes through the groove opening and connects to the elastic buffer member.

[0019] In one embodiment, the mounting member includes a first mounting portion and a second mounting portion disposed at an angle to the first mounting portion, the first mounting portion being connected to the second mounting portion, the first mounting portion being mounted in the mounting groove, and the end of the second mounting portion away from the first mounting portion being connected to the elastic buffer member through the groove.

[0020] In one embodiment, the flange has a mounting port on the side facing away from the connection between the yoke plate and the driving member. The mounting port is connected to the mounting groove and the groove opening, and the mounting port is used for the first mounting part to be inserted into the mounting groove.

[0021] In one embodiment, a limiting member is further included, comprising a first limiting block and two second limiting blocks, each disposed on the side of the flange facing away from the winding drum. The first limiting block is opposite to the mounting opening, and the two second limiting blocks are connected to the opposite ends of the first limiting block one-to-one. The two second limiting blocks are located on opposite sides of the slot, and the first limiting block and the two second limiting blocks form a limiting recess. The elastic buffer is disposed in the limiting recess.

[0022] 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, the locking member is connected to the driving member of the electromagnet mechanism, and under the drive of the electromagnetic component, the driving member can drive the locking member to move away from or towards the ratchet.

[0023] On another front, a vehicle is also provided, including a seat belt, a seat belt retractor, and the aforementioned seat belt locking device. The seat belt is mounted on the seat belt retractor, and the ratchet of the seat belt locking device is connected to the seat belt retractor. The rotation of the ratchet can drive the seat belt retractor to retract or release the seat belt.

[0024] The aforementioned electromagnet mechanism, by providing a blocking protrusion between the driving component and the magnetic conductor, allows for the blocking of the driving component when they are attracted together, maintaining a large gap between them. This sufficient gap allows for the release of voltage from the enameled wire in the electromagnetic assembly. Furthermore, maintaining a large gap shortens the distance between the initial and attracted positions of the driving component, thus reducing the travel distance of the driving component and accelerating the response speed of the electromagnet mechanism. In addition, the blocking protrusion reduces the attraction force of the magnetic conductor on the driving component. During the release process, the driving component experiences greater acceleration due to its own elastic force, shortening the time it takes to move from the attracted position to the initial position. This facilitates rapid reset of the driving component and further accelerates the response speed of the electromagnet mechanism.

[0025] Furthermore, the blocking protrusion is supported by at least one of the magnetic conductor, the first flange, and the active member to facilitate the setting of the blocking protrusion.

[0026] Furthermore, when the active component and the magnetic conductor are attracted together, the side of the blocking protrusion facing the first flange contacts the pole surface of the magnetic conductor. This fully utilizes the space on the pole surface of the magnetic conductor, making the electromagnet mechanism more compact. In this embodiment, the blocking protrusion and the active component are an integral structure, reducing the assembly process between the blocking protrusion and the active component.

[0027] Furthermore, there is an elastic buffer between the pole face of the magnetic conductor and the driving member. The elastic buffer has a certain elastic deformation capability. During the process of the driving member moving towards the pole face of the magnetic conductor, the elastic buffer will be squeezed and deformed by the driving member, thereby buffering the driving member and effectively reducing the noise generated by the collision of the blocking protrusion with any of the driving member, magnetic conductor and coil frame, thereby reducing the operating noise of the electromagnet mechanism. It can also reduce the stress on the blocking protrusion and slow down the wear of the blocking protrusion.

[0028] Furthermore, by placing the elastic buffer on the first flange, the space on the first flange can be fully utilized, and the elastic buffer on the first flange will not move with the driving member, thus preventing the elastic buffer from falling off the driving member.

[0029] Furthermore, the mounting components provide mounting and support for the elastic buffer components.

[0030] Furthermore, since the first limiting block is opposite to the mounting port, when the mounting component is inserted into the mounting groove from the mounting port, it can drive the elastic buffer component into the limiting recess. When the elastic buffer component abuts against the first limiting block, it indicates that the elastic buffer component is installed in place.

[0031] In this type of seat belt locking device, a blocking protrusion is provided between the driving component and the magnetic component. When the driving component and the magnetic component are attracted, the blocking protrusion can block the driving component, maintaining a large gap between them. This allows for a sufficiently large gap to release the voltage of the enameled wire in the electromagnetic assembly. Maintaining a large gap between the driving component and the magnetic component also shortens the distance between the initial position and the attracted position of the driving component, thereby shortening the travel distance of the driving component. This, in turn, causes the locking component to quickly move away from the ratchet, enabling the seat belt locking device to respond quickly.

[0032] In this type of vehicle, because the electromagnet mechanism of the seat belt locking device is equipped with a blocking protrusion, when the electromagnet mechanism is de-energized under the action of the blocking protrusion, the locking component can quickly approach the ratchet and engage with the ratchet teeth on the ratchet. This can quickly stop the action of the seat belt retractor, thereby locking the seat belt. Attached Figure Description

[0033] Figure 1 This is a perspective view of the electromagnet mechanism and the locking element at an angle in some embodiments.

[0034] Figure 2 This is a perspective view of the electromagnet mechanism and locking element from another angle in some embodiments.

[0035] Figure 3 This is a structural diagram of the electromagnet mechanism and locking member after removing the elastic buffer, mounting member, and second yoke plate in some embodiments.

[0036] Figure 4 This is a structural diagram of the armature, locking member, and blocking protrusion in some embodiments.

[0037] Figure 5 This is a structural diagram of the elastic buffer and mounting component in some embodiments.

[0038] Figure 6 This is a structural diagram of the seatbelt locking device in some embodiments.

[0039] In the picture:

[0040] 1. Coil frame; 11. First flange; 111. Mounting groove; 112. Groove opening; 12. Second flange; 13. Winding drum; 2. Magnetic conductor; 3. Driving component; 31. Armature; 32. Moving spring; 4. Yoke plate; 41. First yoke plate; 42. Second yoke plate; 5. Blocking protrusion; 6. Elastic buffer; 7. Mounting component; 71. First mounting part; 72. Second mounting part; 8. Limiting component; 81. First limiting block; 82. Second limiting block; 83. Limiting recess; 100. Electromagnetic mechanism; 200. Ratchet; 201. Ratchet tooth; 300. Locking component. Detailed Implementation

[0041] 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.

[0042] 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.

[0043] 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.

[0044] 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.

[0045] 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.

[0046] 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.

[0047] See Figure 1 , Figure 1 A perspective view of the electromagnet mechanism and the locking member at an angle is shown in some embodiments of this application. Some embodiments of this application provide a seatbelt locking device including a ratchet 200, an electromagnet mechanism 100, and a locking member 300 for engaging with the ratchet teeth 201 on the ratchet 200.

[0048] See Figure 1 and Figure 2 , Figure 2 A perspective view of the electromagnet mechanism and locking element from another angle is shown in some embodiments. The electromagnet mechanism 100 includes an electromagnetic component, an active member 3, a yoke plate 4, and a blocking protrusion 5. The electromagnetic component includes a coil frame 1 and a magnetic conductor 2, the magnetic conductor 2 being an iron core. The coil frame 1 includes a winding drum 13, a first flange 11, and a second flange 12. The first flange 11 is located at one end of the winding drum 13 along its axial direction, and the second flange 12 is located at the other end of the winding drum 13 along its axial direction. A portion of the magnetic conductor 2 passes through the winding drum 13, and the pole face of the magnetic conductor 2 protrudes from the side of the first flange 11 facing away from the winding drum 13. At least a portion of the active member 3 is located on the side of the first flange 11 facing away from the winding drum 13. When the electromagnetic force of the electromagnetic component changes, the active member 3 can move towards the magnetic conductor 2 until it is attracted to the magnetic conductor 2, or the active member 3 can move towards the pole face of the magnetic conductor 2 and disengage from the magnetic conductor 2. A ratchet 200 is disposed on one side of the electromagnet mechanism 100. A locking member 300 is connected to the driving member 3 of the electromagnet mechanism 100, and under the drive of the electromagnetic assembly, the driving member 3 can move the locking member 300 away from or towards the ratchet 200. At least a portion of the yoke plate 4 is located on one side of the first flange 11, and the yoke plate 4 is connected to the driving member 3. A blocking protrusion 5 is disposed between the driving member 3 and the magnetic conductor 2, and the blocking protrusion 5 is used to maintain a gap between the pole faces of the driving member 3 and the magnetic conductor 2. It should be noted that the pole face of the magnetic conductor 2 is the end face of the magnetic conductor 2.

[0049] It is understandable that the active component 3 has a certain elastic deformation capability. The electromagnetic component also includes enameled wire, which is wound around the outer circumference of the winding drum 13. When the enameled wire is energized, the magnetic conductor 2 inserted in the winding drum 13 becomes magnetic. The electromagnetic force of the magnetic conductor 2 drives the active component 3 to move from the initial position toward the pole face of the magnetic conductor 2 until the active component 3 reaches the attraction position. When the enameled wire is de-energized, the magnetism of the magnetic conductor 2 disappears, and the active component 3 resets under its own elastic action. During this process, the active component 3 moves from the attraction position to the initial position, realizing the reset of the active component 3, so that the active component 3 moves away from the magnetic conductor 2 and releases the attraction with the magnetic conductor 2 (i.e., the active component 3 is separated from the magnetic conductor 2).

[0050] By providing a blocking protrusion 5 between the active member 3 and the magnetic conductor 2, when the active member 3 and the magnetic conductor 2 are attracted together, the blocking protrusion 5 can block the active member 3, maintaining a large gap between them. This allows for sufficient gap to release the voltage of the enameled wire in the electromagnetic assembly. Maintaining a large gap between the active member 3 and the magnetic conductor 2 also shortens the distance between the initial position and the attracted position of the active member 3, thus shortening the travel distance of the active member 3 and accelerating the response speed of the electromagnet mechanism 100. Furthermore, the blocking protrusion 5 reduces the attraction force of the magnetic conductor 2 on the active member 3. This allows the active member 3 to have a larger acceleration under its own elastic force during the release process, shortening the time it takes for the active member 3 to move from the attracted position to the initial position. This facilitates rapid reset of the active member and further accelerates the response speed of the electromagnet mechanism 100.

[0051] It should be noted that, in this specification, the engaging position of the active member 3 refers to the position where the active member 3 is driven by the electromagnetic force of the magnetically conductive member 2 to move towards the pole surface of the magnetically conductive member 2 to the position closest to the magnetically conductive member 2. At this position, due to the obstruction of the blocking protrusion 5, the active member 3 does not contact the magnetically conductive member 2 but maintains a certain distance from it. In this specification, the engaging position of the active member 3 and the magnetically conductive member 2 refers to the active member 3 being in the engaging position, that is, when the active member 3 and the magnetically conductive member 2 are engaged, due to the obstruction of the blocking protrusion 5, the active member 3 maintains a certain distance from the magnetically conductive member 2 and does not contact it.

[0052] In some embodiments, the blocking protrusion 5 has at least one of the magnetic conductor 2, the first flange 11, and the active member 3, such that the blocking protrusion 5 can be supported by at least one of the magnetic conductor 2, the first flange 11, and the active member 3, thereby facilitating the placement of the blocking protrusion 5. It should be noted that when the blocking protrusion 5 is disposed on the magnetic conductor 2 or the first flange 11, the blocking protrusion 5 contacts the active member 3 when the active member 3 is attracted to the magnetic conductor 2; when the blocking protrusion 5 is disposed on the active member 3, the blocking protrusion 5 contacts the magnetic conductor 2 or the first flange 11 when the active member 3 is attracted to the magnetic conductor 2.

[0053] In this embodiment, see Figure 1 , Figure 2 and Figure 4 A blocking protrusion 5 is disposed on the active member 3, and the blocking protrusion 5 at least partially protrudes from the side of the active member 3 facing the first flange 11. The end of the blocking protrusion 5 facing the first flange 11 and away from the active member 3 is used to contact the pole surface of the magnetic conductor 2. When the active member 3 and the magnetic conductor 2 are attracted together, the side of the blocking protrusion 5 facing the first flange 11 contacts the pole surface of the magnetic conductor 2. This makes full use of the space on the pole surface of the magnetic conductor 2, making the structure of the electromagnet mechanism 100 more compact. In this embodiment, the blocking protrusion 5 and the active member 3 are an integral structure, reducing the assembly process of the blocking protrusion 5 and the active member 3.

[0054] The blocking protrusion 5 can be a conductive metal part or an insulating part. No specific restrictions are placed on the material of the blocking protrusion 5.

[0055] See Figure 2 and Figure 4 The blocking protrusions 5 are at least two, and the at least two blocking protrusions 5 are spaced apart. In this embodiment, there are two blocking protrusions 5, which are spaced apart along the width direction of the active member 3 (i.e., the direction indicated by the X arrow in the figure). By setting two blocking protrusions 5, when the active member 3 is attracted to the magnetic guide member 2, the active member 3 can be supported on one side of the magnetic guide member 2 by the two blocking protrusions 5, which helps to reduce the risk of the active member 3 tilting, thereby improving the stability of the active member 3. Of course, in other embodiments, the number of blocking protrusions 5 can be flexibly adjusted as needed, and there is no specific limitation on the number of blocking protrusions 5 here.

[0056] In actual implementation, the blocking protrusion 5 may be provided only on the pole surface of the magnetic conductor 2 or only on the side of the first flange 11 facing away from the winding drum 13; or, the blocking protrusion 5 may be provided on both the pole surface of the magnetic conductor 2 and the side of the first flange 11 facing away from the winding drum 13; or, the blocking protrusion 5 may be provided on both the pole surface of the magnetic conductor 2 and the side of the driving member 3 facing the first flange 11; or, the blocking protrusion 5 may be provided on both the pole surface of the magnetic conductor 2, the side of the first flange 11 facing away from the winding drum 13, and the side of the driving member 3 facing the first flange 11.

[0057] Of course, in other embodiments, the blocking protrusion 5 is not limited to being disposed on the magnetic conductor 2, the first flange 11 and the active member 3. It can also be disposed on other components as needed. For example, a support member can be additionally disposed on the support member, and the blocking protrusion 5 is disposed on the support member to provide support for the blocking protrusion 5.

[0058] In some embodiments, see Figure 1 and Figure 2 The electromagnet mechanism 100 also includes an elastic buffer 6, at least a portion of which is located between the pole face of the magnetic conductor 2 and the driving member 3. The blocking protrusion 5 is located between the connection between the driving member 3 and the yoke plate 4 and the elastic buffer 6. Because the elastic buffer 6 exists between the pole face of the magnetic conductor 2 and the driving member 3, and has a certain elastic deformation capability, during the movement of the driving member 3 towards the pole face of the magnetic conductor 2, the elastic buffer 6 is compressed and deformed by the driving member 3, thereby buffering the driving member 3. This effectively reduces the noise generated by the blocking protrusion 5 colliding with any of the driving member 3, the magnetic conductor 2, and the coil frame 1, thereby reducing the operating noise of the electromagnet mechanism 100. Furthermore, it reduces the stress on the blocking protrusion 5 and slows down its wear.

[0059] Continue reading Figure 1 and Figure 2 The elastic buffer 6 is disposed on the side of the first flange 11 facing away from the winding drum 13, and along the axial direction of the winding drum 13, the elastic buffer 6 at least partially protrudes from the pole face of the magnetic conductor 2. The side of the elastic buffer 6 facing away from the first flange 11 is used to contact the driving member 3. By disposing of the elastic buffer 6 on the first flange 11, the space on the first flange 11 can be fully utilized, and the elastic buffer 6 on the first flange 11 will not move with the driving member 3, thus preventing the elastic buffer 6 from falling off the driving member 3.

[0060] See Figure 1 and Figure 2The electromagnet mechanism 100 also includes a mounting member 7 connected to the elastic buffer member 6. The end of the mounting member 7 away from the elastic buffer member 6 is installed in the first flange 11. The mounting member 7 provides mounting and support for the elastic buffer member 6. In this embodiment, the elastic buffer member 6 and the mounting member 7 are an integral structure, which reduces the assembly process of the elastic buffer member 6 and the mounting member 7.

[0061] See Figure 3 The first flange 11 has an internal mounting groove 111. The groove opening 112 of the mounting groove 111 extends to the side of the first flange 11 facing away from the winding drum 13. One end of the mounting member 7 is engaged in the mounting groove 111, and the other end passes through the groove opening 112 and connects to the elastic buffer member 6. This design is advantageous for installing the mounting member 7 in the first flange 11, and does not require screws to fix the mounting member 7.

[0062] To facilitate the installation of the mounting component 7 into the mounting groove 111, the first flange 11 is provided with a mounting port (not shown in the figure) on the side facing away from the connection between the yoke plate 4 and the driving component 3. The mounting port is connected to the mounting groove 111 and the slot 112 respectively, and is used for the mounting component 7 to be inserted into the mounting groove 111.

[0063] Further, see Figure 2 and Figure 5 The mounting component 7 includes a first mounting portion 71 and a second mounting portion 72 at an angle to the first mounting portion 71. The first mounting portion 71 and the second mounting portion 72 are connected. The first mounting portion 71 is installed in the mounting groove 111. The end of the second mounting portion 72 away from the first mounting portion 71 is connected to the elastic buffer 6 through the groove 112. This structure of the mounting component 7 facilitates the engagement of the end of the mounting component 7 away from the elastic buffer 6 in the mounting groove 111. In this embodiment, the first mounting portion 71 and the second mounting portion 72 are perpendicular, and the second mounting portion 72 is connected to the middle of the first mounting portion 71, making the mounting component 7 T-shaped. The shape of the mounting groove 111 matches the structure of the mounting component 7, that is, the mounting groove 111 is a T-shaped groove. The T-shaped mounting component 7 has a low risk of tilting in the mounting groove 111, which helps to improve the stability of the elastic buffer 6.

[0064] See Figure 3The electromagnet mechanism 100 also includes a limiting member 8, which includes a first limiting block 81 and two second limiting blocks 82, both disposed on the side of the flange facing away from the winding drum 13. The first limiting block 81 is opposite to the mounting opening, and the two second limiting blocks 82 are respectively connected to the opposite ends of the first limiting block 81. The two limiting members 8 are located on opposite sides of the slot 112. The first limiting block 81 and the two second limiting blocks 82 form a limiting recess 83, in which an elastic buffer 6 is disposed. Since the first limiting block 81 is opposite to the mounting opening, when the mounting member 7 is inserted into the mounting slot 111 from the mounting opening, it can drive the elastic buffer 6 into the limiting recess 83. When the elastic buffer 6 abuts against the first limiting block 81, it indicates that the elastic buffer 6 is installed in place. It is understandable that, in order to facilitate the insertion of the mounting component 7 into the mounting slot 111, the width of the mounting slot 111 is usually set to be slightly larger than the width of the mounting component 7. Therefore, after the mounting component 7 is inserted into the mounting slot 111, it will move along the width direction of the mounting slot 111 (i.e., the direction indicated by the X arrow in the figure). In this embodiment, two second limiting blocks 82 are set at opposite ends of the first limiting block 81, and are limited by the second limiting components 8 on the opposite sides of the elastic buffer 6, which helps to prevent the elastic buffer 6 from shaking along the width direction of the mounting slot 111.

[0065] Of course, in other embodiments, the elastic buffer 6 can also be installed on the first flange 11 by means of screws or adhesive layers, and there are no specific restrictions on the installation method of the elastic buffer 6 and the first flange 11.

[0066] In some embodiments, the yoke plate 4 includes a first yoke plate 41 and a second yoke plate 42 at an angle to the first yoke plate 41. The first yoke plate 41 and the second yoke plate 42 are connected. The first yoke plate 41 is parallel to the axis of the winding drum 13 and is located on one side of the first flange 11. The second yoke plate 42 is parallel to the second flange 12 and is located on one side of the second flange 12. The end of the magnetic conductor 2 away from the first flange 11 passes through the second flange 12 and is connected to the second yoke plate 42.

[0067] See Figure 1 , Figure 2 and Figure 3 The driving component 3 includes an armature 31 and a moving spring 32. The armature 31 is located on the side of the first flange 11 facing away from the winding drum 13. One end of the moving spring 32 is connected to the first yoke plate 41, and the other end is connected to the armature 31. (See reference...) Figure 4A blocking protrusion 5 is provided on the side of the armature 31 facing the first flange 11. The blocking protrusion 5 and the armature 31 are an integral structure. The moving spring 32 has the ability to elastically deform. The armature 31 can be attracted to the magnetic conductor 2. When the magnetic conductor 2 has an electromagnetic force, the electromagnetic force of the magnetic conductor 2 overcomes the elastic force of the moving spring 32 and drives the armature 31 to move towards the pole surface of the magnetic conductor 2. When the magnetic conductor 2 has no electromagnetic force, the armature 31 is reset under the elastic action of the moving spring 32, so that the armature 31 moves away from the pole surface of the magnetic conductor 2.

[0068] When the enameled wire in the electromagnet mechanism 100 is energized, the driving member 3 is driven by the electromagnetic force of the magnetic conductor 2 to move towards the pole surface of the magnetic conductor 2, causing the locking member 300 to move away from the ratchet 200, thereby releasing the locking member 300 from the ratchet 201. When the enameled wire in the electromagnet mechanism 100 is de-energized, the electromagnet mechanism 100 of the magnetic conductor 2 disappears, and the driving member 3 automatically moves away from the pole surface of the magnetic conductor 2, causing the locking member 300 to move closer to the ratchet 200, causing the locking member 300 to engage with the ratchet 201 of the ratchet 200, thereby preventing the seat belt from moving. In this type of seatbelt locking device, a blocking protrusion 5 is provided between the driving member 3 and the magnetic guide member 2. When the driving member 3 and the magnetic guide member 2 are attracted together, the blocking protrusion 5 can block the driving member 3, maintaining a large gap between them. This allows for sufficient gap to release the voltage of the enameled wire in the electromagnetic assembly. Maintaining a large gap between the driving member 3 and the magnetic guide member 2 also shortens the distance between the initial position and the attracted position of the driving member 3, thus shortening the travel distance of the driving member 3. This, in turn, causes the locking member to quickly move away from the ratchet, enabling the seatbelt locking device to respond quickly. Furthermore, the blocking protrusion 5 reduces the attraction force of the magnetic guide member 2 on the driving member 3. During the release of the driving member 3 by the magnetic guide member 2, the driving member 3 experiences greater acceleration under its own elastic force, shortening the time it takes for the driving member 3 to move from the attracted position to the initial position. This facilitates rapid reset of the driving member 3 and further accelerates the response speed of the seatbelt locking device.

[0069] Furthermore, when the electromagnet mechanism 100 includes an elastic buffer 6, during the movement of the active member 3 toward the pole face of the magnetic conductor 2, the elastic buffer 6 is squeezed and deformed by the active member 3, thereby buffering the movement of the active member 3 and effectively reducing the noise generated by the collision of the blocking protrusion 5 with any of the active member, the magnetic conductor 2 and the coil frame 1, thereby effectively reducing the operating noise of the seat belt locking device.

[0070] In some embodiments, see Figure 1 and Figure 6The invention also provides a vehicle comprising a seatbelt (not shown), a seatbelt retractor (not shown), and a seatbelt locking device of any of the above structures. The seatbelt is mounted on the seatbelt retractor, and the ratchet 200 of the seatbelt locking device is connected to the seatbelt retractor. Rotation of the ratchet 200 can cause the seatbelt retractor to retract or release the seatbelt. Because the electromagnet mechanism 100 of the seatbelt locking device has a blocking protrusion 5, when the electromagnet mechanism 100 is de-energized under the action of the blocking protrusion 5, the locking member 300 can quickly approach the ratchet 200 and engage with the ratchet teeth 201 on the ratchet 200. This quickly stops the operation of the seatbelt retractor, thereby locking the seatbelt.

[0071] Furthermore, when the electromagnet mechanism 100 includes an elastic buffer 6, the operating noise of the seat belt locking device can be effectively reduced under the action of the elastic buffer 6, thereby effectively reducing the noise of the vehicle locking seat belt.

[0072] 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.

[0073] 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: An electromagnetic assembly, comprising a coil frame and a magnetic conductor, wherein the coil frame comprises a winding drum and a flange, the flange being disposed at one end of the winding drum along its axial direction, and a portion of the magnetic conductor passing through the winding drum, the pole face of the magnetic conductor protruding from the flange on the side opposite to the winding drum; An active member, at least a portion of which is disposed on the side of the flange facing away from the winding drum, when the electromagnetic force of the electromagnetic assembly changes, the active member can move toward the pole face of the magnetic conductor until it is attracted to the magnetic conductor, or the active member can move away from the pole face of the magnetic conductor and disengage from the magnetic conductor. A yoke plate, which is connected to the driving member; and A blocking protrusion is disposed between the active member and the magnetic conductive member, and the blocking protrusion is used to maintain a gap between the pole surfaces of the active member and the magnetic conductive member.

2. The electromagnet mechanism according to claim 1, characterized in that, The blocking protrusion has at least one, and the blocking protrusion is provided by at least one of the magnetic conductor, the flange and the active member.

3. The electromagnet mechanism according to claim 2, characterized in that, The blocking protrusion is disposed on the active member, and the blocking protrusion at least partially protrudes from the side of the active member facing the flange, the side of the blocking protrusion facing the flange being used to contact the pole surface of the magnetic conductor.

4. The electromagnet mechanism according to claim 3, characterized in that, The blocking protrusion has at least two parts, and the at least two blocking protrusions are spaced apart.

5. The electromagnet mechanism according to any one of claims 1 to 4, characterized in that, It also includes an elastic buffer, at least a portion of which is located in the region between the pole face of the magnetic conductor and the driving member, and the blocking protrusion is located between the connection between the driving member and the yoke plate and the elastic buffer.

6. The electromagnet mechanism according to claim 5, characterized in that, The elastic buffer is disposed on the side of the flange facing away from the winding drum and along the axial direction of the winding drum. The elastic buffer protrudes at least partially from the pole face of the magnetic conductor, and the side of the elastic buffer facing away from the flange is used to contact the driving member.

7. The electromagnet mechanism according to claim 6, characterized in that, It also includes a mounting member connected to the elastic buffer, wherein one end of the mounting member away from the elastic buffer is mounted in the flange.

8. The electromagnet mechanism according to claim 7, characterized in that, The flange has an internal mounting groove. The groove extends to the side of the flange facing away from the winding drum. One end of the mounting member is engaged in the mounting groove, and the other end passes through the groove and connects to the elastic buffer.

9. The electromagnet mechanism according to claim 8, characterized in that, The mounting component includes a first mounting portion and a second mounting portion at an angle to the first mounting portion. The first mounting portion is connected to the second mounting portion. The first mounting portion is installed in the mounting groove. The end of the second mounting portion away from the first mounting portion passes through the groove and is connected to the elastic buffer.

10. The electromagnet mechanism according to claim 9, characterized in that, The flange has an installation port on the side facing away from the connection between the yoke plate and the driving member. The installation port is connected to the installation groove and the groove opening, and is used for the first mounting part to be inserted into the installation groove.

11. The electromagnet mechanism according to claim 10, characterized in that, It also includes a limiting component, which includes a first limiting block and two second limiting blocks, both disposed on the side of the flange facing away from the winding drum. The first limiting block is opposite to the mounting opening, and the two second limiting blocks are connected to the opposite ends of the first limiting block one by one. The two second limiting blocks are located on opposite sides of the slot. The first limiting block and the two second limiting blocks form a limiting recess, and the elastic buffer is disposed in the limiting recess.

12. 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 11. 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 under the drive of the electromagnetic component, the driving member can drive the locking member to move away from or towards the ratchet.

13. A vehicle, characterized in that, The device includes a seat belt, a seat belt retractor, and a seat belt locking device as described in claim 12. The seat belt is disposed on the seat belt retractor, and the ratchet of the seat belt locking device is connected to the seat belt retractor. The rotation of the ratchet can drive the seat belt retractor to retract or release the seat belt.

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