Limiting buffer component, mechanism, and assembly, opening and closing motion mechanism and vehicle

Abstract

A limiting buffer component (110), comprising a first bracket (1), a second bracket (2), and a buffer spring (3), wherein the first bracket (1) and the second bracket (2) are detachably connected; the buffer spring (3) is arranged in a first direction, a first end of the buffer spring (3) being connected to the first bracket (1), and a second end of the buffer spring (3) being connected to the second bracket (2), thus driving the first bracket (1) and the second bracket (2) to move in the first direction; the first bracket (1) is configured to detachably connect to a first workpiece, and the second bracket (2) is configured to abut against a second workpiece when the first workpiece moves relative to the second workpiece to a preset position. Further provided are a limiting buffer mechanism (100) comprising the limiting buffer component (110), a limiting buffer assembly (200), an opening and closing motion mechanism, and a vehicle. The limiting buffer component (110) can use the buffer spring (3) to adaptively absorb the surface difference between the first workpiece and the second workpiece, thereby ensuring the buffer limiting accuracy.

Description

Limit buffer components, mechanisms, assemblies, opening and closing motion mechanisms and automobiles

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on February 6, 2024, with application number 202420285097.4 and application name “Limit buffer component, mechanism, assembly, opening and closing motion mechanism and automobile” and the Chinese patent application filed with the China Patent Office on February 6, 2024, with application number 202410170826.6 and application name “Limit buffer component, mechanism, assembly, opening and closing motion mechanism and automobile”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the technical field of position-limiting buffer structures, and in particular to a position-limiting buffer component, mechanism, assembly, opening and closing movement mechanism, and automobile. Background Art

[0003] A position limiting buffer structure is a structure that can provide position limiting buffer protection. Specifically, it can be used between two workpieces that are in relative motion to provide position limiting buffer protection for the two workpieces in relative motion. For example, a position limiting buffer structure can be used on car doors or other opening and closing moving parts. By providing position limiting buffering for the opening and closing moving parts, it can avoid damage to the opening and closing moving parts due to excessive opening and closing, or problems such as poor sealing between the opening and closing moving parts and their fixed supporting parts due to incomplete closure, thereby achieving the purpose of protecting the opening and closing moving parts and their fixed supporting parts. Existing position limiting buffer structures generally use screw adjustment or barbed sliding adjustment to perform rough position limiting, and their position limiting accuracy is low, and they cannot provide better protection for the two workpieces in relative motion.

[0004] Application Contents

[0005] The embodiments of the present invention provide a position limiting buffer component, a mechanism, an assembly, an opening and closing motion mechanism and a vehicle to solve the problem of low position limiting accuracy in existing position limiting buffer structures.

[0006] A position limiting buffer assembly comprises a first bracket, a second bracket and a buffer spring;

[0007] The first bracket and the second bracket are detachably connected;

[0008] The buffer spring is arranged along the first direction, the first end of the buffer spring is connected to the first bracket, and the second end of the buffer spring is connected to the second bracket, and is used to drive the first bracket and the second bracket to move along the first direction;

[0009] The first bracket is used for being detachably connected to the first workpiece, and the second bracket is used for abutting against the second workpiece when the first workpiece moves to a preset position relative to the second workpiece.

[0010] Preferably, the position limiting buffer assembly further includes a first fastener;

[0011] The first fastener is used to lock the second bracket, the first bracket and the first workpiece when the second bracket abuts the second workpiece.

[0012] Preferably, the first bracket includes a first bracket body and a guide groove provided on the first bracket body along a first direction;

[0013] The second bracket includes a second bracket body and a first assembly hole provided on the second bracket body;

[0014] The first fastener is used to penetrate the first assembly hole, the guide groove and the first workpiece when the second bracket abuts the second workpiece, so as to lock the second bracket, the first bracket and the first workpiece.

[0015] Preferably, the first bracket further includes a second assembly hole provided on the first bracket body;

[0016] The second bracket further includes a relief protrusion extending from the second bracket body in a second direction, the relief protrusion is provided with a third assembly hole, and the second direction is perpendicular to the first direction;

[0017] The position limiting buffer assembly further includes a second fastener, which is configured to penetrate the third assembly hole, the second assembly hole, and the first workpiece to pre-lock the second bracket, the first bracket, and the first workpiece.

[0018] Preferably, the position limiting buffer assembly further includes a sliding guide structure;

[0019] The sliding guide structure is provided on the first bracket and the second bracket, and is used to guide the first bracket and the second bracket to move along a first direction.

[0020] Preferably, the first bracket further comprises a first clamping portion extending from the first bracket body along the third direction, the first clamping portion being arranged at an opening position of the guide slot, and the first clamping portion cooperates with the first bracket body to form a guide gap;

[0021] The second bracket further includes a second clamping portion extending from the second bracket body along the third direction, the second clamping portion being inserted into the guide gap and clamped to the first clamping portion;

[0022] The first clamping portion and the second clamping portion cooperate to form the sliding guide structure.

[0023] Preferably, the first bracket body includes a first body portion, first connecting portions extending outwardly from both ends of the first body portion along a third direction, and a second connecting portion extending from the first connecting portion along the first direction, wherein the first body portion, the first connecting portion, and the second connecting portion cooperate to form the guide groove; the second connecting portion extends inwardly from the first clamping portion along the third direction, and the first clamping portion cooperates with the first body portion to form the guide gap;

[0024] The second bracket further includes a third connecting portion extending outwardly from both ends of the second bracket body along the third direction, and the third connecting portion is provided with the first assembly hole; the second clamping portion and the third connecting portion are spaced apart along the first direction.

[0025] Preferably, the second bracket further comprises a third bracket body extending from one side of the second bracket body along the second direction, and the second bracket body is provided with a first through hole;

[0026] The first bracket further includes a first blocking piece extending from one side of the first bracket body along the second direction, the first blocking piece passing through the first through hole and arranged opposite to the third bracket body;

[0027] The first end of the buffer spring is connected to the first blocking piece, and the second end of the buffer spring is connected to the third bracket body;

[0028] The second bracket body, the first bracket body and the first workpiece are detachably connected; the third bracket body is used to abut against the second workpiece when the first workpiece moves to a preset position relative to the second workpiece.

[0029] Preferably, the first blocking piece includes a blocking piece connecting portion extending from one side of the first bracket body along the second direction, and a blocking piece main body portion extending from the blocking piece connecting portion along the second direction;

[0030] The first through hole includes a first through hole portion extending from a side edge of the second bracket body close to the third bracket body along the first direction, and a second through hole portion extending from the first through hole portion along the first direction;

[0031] The widths of the blocking piece connecting portion, the second through hole portion, the blocking piece main portion and the first through hole portion increase in sequence;

[0032] The first end of the buffer spring is connected to the blocking piece main body, and the second end of the buffer spring is connected to the third bracket body.

[0033] Preferably, the third bracket body is provided with a second through hole and a second blocking piece located in the second through hole;

[0034] The first blocking piece passes through the first through hole and is arranged opposite to the second blocking piece;

[0035] The first end of the buffer spring is connected to the first blocking piece, and the second end of the buffer spring is connected to the second blocking piece.

[0036] Preferably, the buffer spring is a conical spring, the large-diameter end of the conical spring is connected to the first baffle, and the small-diameter end of the conical spring is connected to the third bracket body.

[0037] Preferably, the first bracket further includes a third clamping portion extending from one side of the first bracket body along the second direction toward a direction away from the first blocking piece, and the third clamping portion is used to clamp with the first workpiece.

[0038] A position limiting buffer mechanism, comprising the above-mentioned position limiting buffer component and a flexible buffer component;

[0039] The first side surface of the flexible buffer component is connected to the second bracket, and the second side surface of the flexible buffer component is used to abut against the second workpiece when the first workpiece moves to a preset position relative to the second workpiece.

[0040] Preferably, the flexible buffer assembly includes a flexible buffer block and a buffer block frame, and the flexible buffer block wraps the buffer block frame;

[0041] The first side surface of the flexible buffer block is connected to the second bracket, and the second side surface of the flexible buffer assembly abuts against the second workpiece when the first workpiece moves to a preset position relative to the second workpiece.

[0042] Preferably, the first bracket includes a first bracket body and a guide groove provided on the first bracket body along a first direction;

[0043] The second bracket further includes a third connecting portion extending outwardly from both ends of the second bracket body along a third direction, and the third connecting portion is provided with a first assembly hole;

[0044] The position limiting buffer assembly further includes a first fastener, which is used to penetrate the first assembly hole, the guide groove and the first workpiece when the second bracket abuts the second workpiece, so as to lock the second bracket, the first bracket and the first workpiece;

[0045] The flexible buffer block is further provided with a first avoidance groove, which is arranged opposite to the third connecting portion and is used to avoid the first fastener.

[0046] Preferably, the second bracket body further includes a third bracket body extending from one side of the second bracket body along the second direction, the second bracket body is provided with a first through hole, and the third bracket body is provided with a second through hole and a second blocking piece located in the second through hole;

[0047] The first bracket further includes a first blocking piece extending from one side of the first bracket body along the second direction, the first blocking piece passing through the first through hole and arranged opposite to the second blocking piece;

[0048] The first end of the buffer spring is connected to the first blocking piece, and the second end of the buffer spring is connected to the second blocking piece;

[0049] The flexible buffer block is further provided with a second avoidance groove, which is arranged opposite to the second blocking piece and is used to avoid the second blocking piece.

[0050] Preferably, the third bracket body is further provided with a first connecting hole;

[0051] The flexible buffer block is further provided with a second connecting hole;

[0052] The buffer block skeleton is further provided with a third connecting hole;

[0053] The flexible buffer assembly further includes a third fastener, which is configured to pass through the first connection hole, the second connection hole, and the third connection hole to fix the position limiting buffer assembly and the flexible buffer assembly.

[0054] A position limiting and buffering assembly, comprising the above-mentioned position limiting and buffering mechanism and a sensing component;

[0055] The first end of the sensing component is arranged on the limit buffer mechanism and extends out of the second side surface of the flexible buffer component; the second end of the sensing component is used to be electrically connected to the control module corresponding to the first workpiece.

[0056] Preferably, the compression stroke of the buffer spring is greater than the limit stroke of the sensing component extending out of the second side surface of the flexible buffer component.

[0057] Preferably, the position limiting buffer mechanism is provided with a switch assembly hole penetrating the second bracket and the flexible buffer component;

[0058] The first end of the sensing component is assembled in the switch assembly hole and extends out of the second side surface of the flexible buffer component.

[0059] Preferably, the sensing component includes a connecting harness, a sensing switch and a harness connector;

[0060] One end of the connecting wire harness is connected to the induction switch, and the other end of the connecting wire harness is connected to the wire harness connector;

[0061] The inductive switch is mounted in the switch mounting hole, and the end of the inductive switch extends out of the second side surface of the flexible buffer assembly;

[0062] The wiring harness connector is used to be electrically connected to a control module corresponding to the first workpiece.

[0063] Preferably, the sensing component further includes a switch fixing seat, and the sensing switch is used to fix the switch fixing seat in the switch assembly hole.

[0064] Preferably, the inductive switch comprises a switch connecting portion and a switch body extending from one side of the switch connecting portion, wherein the switch connecting portion is provided with a limit through hole, the axis direction of the limit through hole being perpendicular to the axis direction of the switch assembly hole; the switch connecting portion is connected to the connecting harness;

[0065] The switch fixing base includes a first substrate, a second substrate extending vertically from a first side edge of the first substrate, and a third substrate extending vertically from a middle position of the second side of the first substrate. A first protrusion extends vertically from a side of the second substrate away from the first substrate, and a second protrusion extends vertically from a side of the third substrate. The second protrusion extends in the same direction as the first protrusion.

[0066] The first protrusion is assembled in the limiting through hole, the first side edge of the first substrate and one side of the second substrate are both in contact with one side of the switch connecting part, the second protrusion is in contact with one side of the switch body, the third substrate and the switch body are inserted into the switch assembly hole, and the end of the switch body extends out of the second side surface of the flexible buffer component.

[0067] Preferably, the flexible buffer block is further provided with a first mounting hole;

[0068] A second mounting hole is provided on a side of the first substrate away from the second substrate, and the second mounting hole is arranged opposite to the first mounting hole;

[0069] The sensing component further includes a fourth fastener passing through the second mounting hole and the first mounting hole.

[0070] An opening and closing motion mechanism, comprising an opening and closing motion member and the above-mentioned position limiting buffer assembly;

[0071] The opening and closing moving part is used for relative movement with the fixed receiving part;

[0072] The limit buffer assembly includes a limit buffer mechanism and a sensing component. The limit buffer mechanism is arranged on the opening and closing moving part. The first end of the sensing component is arranged on the limit buffer mechanism and extends out of the second side surface of the flexible buffer component. The second end of the sensing component is used to be electrically connected to the control module corresponding to the first workpiece. When the sensing component is connected to the fixed supporting part, the sensing component outputs a sensing signal.

[0073] An automobile comprises a door, a door frame and the above-mentioned position limiting buffer assembly; the door and the door frame are rotatably connected;

[0074] The limit buffer assembly includes a limit buffer mechanism and a sensing component. The limit buffer mechanism is arranged on the vehicle door. The first end of the sensing component is arranged on the limit buffer mechanism and extends out of the second side surface of the flexible buffer component. The second end of the sensing component is used to be electrically connected to the control module corresponding to the first workpiece. When the sensing component is connected to the door frame, the sensing component outputs a sensing signal.

[0075] The above-mentioned limit buffer component, mechanism, assembly, opening and closing movement mechanism and automobile first pre-install the limit buffer component on the first workpiece. When the first workpiece moves to a preset position relative to the second workpiece, such as the position where the second bracket contacts the second workpiece, the relative position or relative angle of the first workpiece and the second workpiece can be adjusted to adjust the face difference according to the face difference matching between the two, and then the adjustment amount of the face difference is adaptively absorbed by the buffer spring, thereby ensuring the buffer limit accuracy of the limit buffer component. BRIEF DESCRIPTION OF THE DRAWINGS

[0076] For ordinary technicians, other drawings can be obtained based on these drawings without any creative work.

[0077] FIG1 is a first structural schematic diagram of a position limiting buffer assembly according to an embodiment of the present invention.

[0078] FIG2 is a second structural schematic diagram of a position limiting buffer assembly according to an embodiment of the present invention;

[0079] FIG3 is a third structural schematic diagram of a position limiting buffer assembly according to an embodiment of the present invention;

[0080] FIG4 is a schematic structural diagram of a first bracket according to an embodiment of the present invention;

[0081] FIG5 is a schematic structural diagram of a second bracket according to an embodiment of the present invention;

[0082] FIG6 is a schematic structural diagram of a flexible buffer assembly according to an embodiment of the present invention;

[0083] FIG7 is a schematic structural diagram of a sensing component according to an embodiment of the present invention;

[0084] FIG8 is a schematic structural diagram of a switch fixing base according to an embodiment of the present invention;

[0085] FIG9 is a schematic diagram of an assembly of a position limiting buffer assembly according to an embodiment of the present invention;

[0086] FIG. 10 is a schematic diagram of an assembly of an opening and closing motion mechanism in one embodiment of the present invention.

[0087] In the figure: 100, limit buffer mechanism; 101, switch assembly hole; 110, limit buffer assembly; 1, first bracket; 11, first bracket body; 111, first body portion; 112, first connecting portion; 113, second connecting portion; 12, guide groove; 13, second assembly hole; 14, first clamping portion; 15, guide gap; 16, first baffle; 161, baffle connecting portion; 162, baffle body portion; 17, third clamping portion; 2, second bracket; 21, second bracket body; 22, first assembly hole; 23, avoidance protrusion; 24, third assembly hole; 25, second clamping portion; 26, third connecting portion; 27, third bracket body; 271, first connecting hole; 28, first through hole; 281, first through hole portion; 282, second through hole portion; 29, second through hole; 210, second baffle ;3. Buffer spring;41. First fastener;42. Second fastener;120. Flexible buffer assembly;51. Flexible buffer block;511. First avoidance groove;512. Second avoidance groove;513. Second connecting hole;514. First mounting hole;52. Buffer block skeleton;521. Third connecting hole;53. Third fastener;200. Limit buffer assembly;6. Sensing assembly;61. Connecting harness;62. Sensing switch;621. Switch connecting part;622. Switch body;623. Limiting through hole;63. Wiring harness connector;64. Switch fixing seat;641. First substrate;642. Second substrate;643. Third substrate;644. First protrusion;645. Second protrusion;646. Second mounting hole;65. Fourth fastener;300. Opening and closing moving part;400. Fixed receiving part. DETAILED DESCRIPTION

[0088] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0089] In the description of the present invention, it should be understood that the terms "longitudinal", "radial", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended only to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as limiting the present invention. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0090] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0091] An embodiment of the present invention provides a position-limiting buffer assembly 110. The position-limiting buffer assembly 110 is applicable to a first workpiece and a second workpiece that can undergo relative motion. The two workpieces can be rotatably connected by a rotating shaft, or can be installed on two workpieces connected by a slide rail or other transmission assembly. The position-limiting buffer assembly 110 can be installed on the first workpiece. When the first workpiece moves relative to the second workpiece to a preset position close to contact, the position-limiting buffer assembly 110 contacts the second workpiece, acting as a position-limiting buffer to prevent excessive opening and closing or incomplete opening and closing between the first and second workpieces, thereby protecting the first and second workpieces. Alternatively, the position-limiting buffer assembly 110 can be installed on the second workpiece. When the first workpiece moves relative to the second workpiece to a preset position close to contact, the position-limiting buffer assembly 110 contacts the first workpiece, acting as a position-limiting buffer to prevent excessive opening and closing or incomplete opening and closing between the first and second workpieces, thereby protecting the first and second workpieces. The first workpiece can be an opening and closing moving member 300, and the second workpiece can be a fixed receiving member 400. For example, the first workpiece can be a vehicle door, and the second workpiece can be a door frame.

[0092] In one embodiment, as shown in Figure 1, the limit buffer assembly 110 includes a first bracket 1, a second bracket 2 and a buffer spring 3; the first bracket 1 and the second bracket 2 are detachably connected; the buffer spring 3 is arranged along the first direction, the first end of the buffer spring 3 is connected to the first bracket 1, and the second end of the buffer spring 3 is connected to the second bracket 2, which is used to drive the first bracket 1 and the second bracket 2 to move along the first direction; the first bracket 1 is used to be detachably connected to the first workpiece, and the second bracket 2 is used to abut the second workpiece when the first workpiece moves to a preset position relative to the second workpiece.

[0093] As an example, the position limiting buffer assembly 110 includes a first bracket 1, a second bracket 2, and a buffer spring 3. The first bracket 1 can be removably mounted on a first workpiece using bolts or other fasteners; the second bracket 2 can be removably connected to the first bracket 1 using bolts or other fasteners. In this example, the first bracket 1 and the second bracket 2 can be first connected to form a single structure using a fastener, and then the first bracket 1 can be assembled to the first workpiece using another fastener. Alternatively, the first bracket 1, the second bracket 2, and the first workpiece can be connected to form a single structure using the same fastener. Since the first workpiece and the second workpiece are two workpieces that can move relative to each other, after the first bracket 1, the second bracket 2 and the first workpiece are connected into an integral structure by fasteners, the first bracket 1 and the second bracket 2 can move relative to the second workpiece along with the first workpiece. When the first workpiece moves to a preset position relative to the second workpiece, the second bracket 2 can be abutted against the second workpiece. Since the two ends of the buffer spring 3 along the first direction are respectively connected to the first bracket 1 and the second bracket 2, the compression and extension of the buffer spring 3 along the first direction can realize a self-adaptive adjustment function to adapt to the surface difference between the first workpiece and the second workpiece to ensure the precise limitation of the limit buffer assembly 110. The first direction here is the axial direction of the buffer spring 3.

[0094] For example, when the first workpiece is an opening and closing moving part 300 and the second workpiece is a fixed supporting part 400, and the moving opening and closing part and the fixed supporting part 400 are rotatably connected via a rotating shaft, the first bracket 1 and the second bracket 2 are connected to the opening and closing moving part 300 via fasteners to form an integrated structure, so that the limit buffer assembly 110 moves with the opening and closing moving part 300; when the opening and closing moving part 300 moves in the opening direction relative to the fixed supporting part 400, the second bracket 2 moves away from the second workpiece; when the opening and closing moving part 300 moves to a preset position in the closing direction relative to the fixed supporting part 400, the second bracket 2 abuts against the second workpiece, and the compression and extension of the buffer spring 3 arranged along the first direction itself can realize a self-adaptive adjustment function to adapt to the surface difference between the first workpiece and the second workpiece to ensure the precise limit of the limit buffer assembly 110.

[0095] In this example, the limit buffer assembly 110 is first pre-installed on the first workpiece. When the first workpiece moves to a preset position relative to the second workpiece, such as the position where the second bracket 2 contacts the second workpiece, the relative position or relative angle of the first workpiece and the second workpiece can be adjusted to adjust the face difference according to the face difference matching between the two, and then the buffer spring 3 is used to adapt and absorb the face difference, thereby ensuring the buffer limit accuracy of the limit buffer assembly 110.

[0096] In one embodiment, as shown in FIG. 1 , the position limiting buffer assembly 110 further includes a first fastener 41 ; the first fastener 41 is used to lock the second bracket 2 , the first bracket 1 and the first workpiece when the second bracket 2 abuts against the second workpiece.

[0097] As an example, the limit buffer assembly 110 can be pre-installed on the first workpiece so that the limit buffer assembly 110 and the first workpiece form an integrated structure. When the first workpiece moves to a preset position relative to the second workpiece, the relative position or relative angle of the first workpiece and the second workpiece can be adjusted to adjust the face difference according to the face difference matching between the two. The adjustment amount of the face difference can then be adaptively absorbed by the buffer spring 3. After the face difference is adjusted, the first fastener 41 is used to lock the limit buffer assembly 110 on the first workpiece to lock the spring adjustment amount, thereby ensuring the buffer limit accuracy of the limit buffer assembly 110.

[0098] In one embodiment, as shown in Figures 1, 4 and 5, the first bracket 1 includes a first bracket body 11 and a guide groove 12 provided on the first bracket body 11 along a first direction; the second bracket 2 includes a second bracket body 21 and a first assembly hole 22 provided on the second bracket body 21; the first fastener 41 is used to penetrate the first assembly hole 22, the guide groove 12 and the first workpiece when the second bracket 2 abuts against the second workpiece, so as to lock the second bracket 2, the first bracket 1 and the first workpiece.

[0099] As an example, the first bracket 1 includes a first bracket body 11 and a guide slot 12 disposed on the first bracket body 11 along a first direction. The guide slot 12 may be a U-shaped guide slot with an opening at one end. The second bracket 2 includes a second bracket body 21 and a first mounting hole 22 disposed on the second bracket body 21 for mounting a fastener. The axis of the first mounting hole 22 is oriented in a second direction perpendicular to the first direction. When the second bracket body 21 is disposed relative to the first bracket body 11, the first mounting hole 22 and the projection of the guide slot 12 along the second direction at least partially overlap. The second direction is perpendicular to the first direction. In this example, the limit buffer assembly 110 can be pre-installed on the first workpiece so that the limit buffer assembly 110 and the first workpiece form an integrated structure. When the first workpiece moves to a preset position relative to the second workpiece, the relative position or relative angle of the first workpiece and the second workpiece can be adjusted to adjust the face difference according to the face difference matching between the two. The adjustment amount of the face difference is then adaptively absorbed by the compression and extension of the buffer spring 3 itself. During this process, the relative position between the first assembly hole 22 and the guide groove 12 changes adaptively. After the face difference is adjusted, the first fastener 41 is used to lock the limit buffer assembly 110 on the first workpiece to lock the spring adjustment amount, thereby ensuring the buffer limit accuracy of the limit buffer assembly 110.

[0100] In one embodiment, as shown in Figures 1, 4 and 5, the first bracket 1 also includes a second assembly hole 13 provided on the first bracket body 11; the second bracket 2 also includes an avoidance protrusion 23 extending from the second bracket body 21 in a second direction, and a third assembly hole 24 is provided on the avoidance protrusion 23, and the second direction is perpendicular to the first direction; the limit buffer assembly 110 also includes a second fastener 42, and the second fastener 42 is used to pass through the third assembly hole 24, the second assembly hole 13 and the first workpiece to pre-lock the second bracket 2, the first bracket 1 and the first workpiece.

[0101] As an example, the first bracket 1 further includes a second assembly hole 13 provided on the first bracket body 11, with the axis of the second assembly hole 13 being oriented in a second direction perpendicular to the first direction. Accordingly, the second bracket 2 further includes a relief protrusion 23 extending from the second bracket body 21 in the second direction. A third assembly hole 24 is provided on the relief protrusion 23, with the axis of the third assembly hole 24 being oriented in the second direction, which is perpendicular to the first direction. In this example, the relief protrusion 23 can be formed by stamping the second bracket body 21 along the second direction using, but not limited to, a stamping process. The cross-sectional shape of the relief protrusion 23 along the first direction is an "X" shape.

[0102] When it is necessary to use the limit buffer assembly 110 to adjust the face difference between the first workpiece and the second workpiece, the second fastener 42 can be passed through the second assembly hole 13, the first assembly hole 22 and the first workpiece to pre-lock the second bracket 2, the first bracket 1 and the first workpiece, so that the second bracket 2, the first bracket 1 and the first workpiece are pre-locked into an integrated structure, so that the limit buffer assembly 110 can move relative to the first workpiece and the second workpiece. When the first workpiece moves to a preset position relative to the second workpiece, the relative position or relative angle of the first workpiece and the second workpiece can be adjusted according to the face difference matching between the two to adjust the face difference, and then the adjustment amount of the face difference is adaptively absorbed by the compression and extension of the buffer spring 3 itself. In this process, the relative position between the first assembly hole 22 and the guide groove 12 changes adaptively. After the face difference is adjusted, the first fastener 41 is used to lock the limit buffer assembly 110 on the first workpiece to lock the spring adjustment amount, thereby ensuring the buffer limit accuracy of the limit buffer assembly 110.

[0103] It can be understood that an avoidance protrusion 23 is provided on the second bracket body 21 so that there is a gap between the third assembly hole 24 on the avoidance protrusion 23 and the second assembly hole 13 on the first bracket body 11 along the second direction to avoid interference when the first bracket body 11 and the second bracket body 21 are fitted to adjust the surface difference.

[0104] As an example, when the first bracket body 11 and the second bracket body 21 are both long strip structures arranged along the third direction, the second assembly hole 13 is arranged in the middle position of the first bracket body 11, and the two guide grooves 12 are arranged on both sides of the first bracket body 11 along the third direction; accordingly, the avoidance protrusion 23 is arranged in the middle position of the second bracket body 21, that is, the third assembly hole 24 on the avoidance protrusion 23 is arranged in the middle position of the second bracket body 21, and the two first assembly holes 22 are arranged on both sides of the second bracket body 21 along the third direction; a second fastener 42 is used to penetrate the third assembly hole 24 and the second The assembly hole 13 and the first workpiece are pre-locked to the second bracket 2, the first bracket 1, and the first workpiece, so that the three form an integrated structure; when the first workpiece and the second workpiece move relative to each other to a preset position and the second bracket 2 abuts the second workpiece, the relative position or relative angle of the first workpiece and the second workpiece is adjusted to adjust the flush difference, and then the buffer spring 3 is used to absorb the adjustment amount of the flush difference. After the flush difference is adjusted, the first fastener 41 is passed through the first assembly hole 22, the guide groove 12, and the first workpiece to lock the second bracket 2, the first bracket 1, and the first workpiece to lock the adjustment amount of the locking spring, thereby ensuring the buffering and limiting accuracy of the limit buffer assembly 110. It can be understood that one second fastener 42 is used to achieve pre-locking of the limit buffer assembly 110 and the first workpiece, and then two second fasteners 42 are used to achieve locking of the limit buffer assembly 110 and the first workpiece after the flush difference is adjusted, so as to facilitate the installation operation of the limit buffer assembly 110 and the first workpiece and ensure the firmness of their connection.

[0105] In one embodiment, the position limiting buffer assembly 110 further includes a sliding guide structure; the sliding guide structure is provided on the first bracket 1 and the second bracket 2, and is used to guide the first bracket 1 and the second bracket 2 to move along the first direction.

[0106] As an example, the position limiting buffer assembly 110 further includes a sliding guide structure, which is provided on the first bracket 1 and the second bracket 2, and provides the first bracket 1 and the second bracket 2 with a guide structure for movement along the first direction, so as to guide the first bracket 1 and the second bracket 2 to move along the first direction, specifically making the first bracket 1 and the second bracket 2 fit together and slide, so as to avoid deviation in the relative movement direction of the first bracket 1 and the second bracket 2, thereby ensuring the installation accuracy between the first bracket 1 and the second bracket 2. For example, a sliding groove provided along the first direction may be provided on either one of the first bracket 1 and the second bracket 2, and a sliding protrusion may be provided on the other, and the sliding protrusion may slide in the sliding groove to cause the first bracket 1 and the second bracket 2 to slide relative to each other along the first direction.

[0107] In one embodiment, as shown in Figures 1, 4 and 5, the first bracket 1 also includes a first clamping portion 14 extending from the first bracket body 11 along the third direction, the first clamping portion 14 is arranged at the opening position of the guide groove 12, and the first clamping portion 14 cooperates with the first bracket body 11 to form a guide gap 15; the second bracket 2 also includes a second clamping portion 25 extending from the second bracket body 21 along the third direction, the second clamping portion 25 is passed through the guide gap 15 and clamped with the first clamping portion 14; the first clamping portion 14 and the second clamping portion 25 cooperate to form a sliding guide structure.

[0108] As an example, the first bracket 1 also includes a first clamping portion 14 extending from the first bracket body 11 along a third direction. The first clamping portion 14 is disposed at the opening of the guide groove 12. The first clamping portion 14 cooperates with the first bracket body 11 to form a guide gap 15. In this example, the width of the first clamping portion 14 along the first direction is the guide length of the guide gap 15 along the first direction. Correspondingly, the second bracket 2 also includes a second clamping portion 25 extending from the second bracket body 21 along the third direction. The second clamping portion 25 is disposed within the guide gap 15 and is clamped to the first clamping portion 14, so that the second clamping portion 25 can not only move along the guide gap 15 to ensure the accuracy of its movement direction, but also ensure the tightness of the connection between the second bracket 2 and the first bracket 1, thereby ensuring the buffer limit accuracy between the first bracket 1 and the second bracket 2. The third direction is a direction perpendicular to both the first direction and the second direction.

[0109] For example, when the first direction is the vertical direction, the second direction is the front-to-back direction, and the third direction is the left-to-right direction, the first bracket body 11 and the second bracket body 21 are arranged in the vertical direction, and when the first bracket body 11 is at the back and the second bracket body 21 is at the front, the first bracket body 11 is provided with a guide groove 12 arranged in the vertical direction and a first clamping portion 14 arranged at the opening position of the guide groove 12 in the left-to-right direction, and the first clamping portion 14 and the first bracket body 11 cooperate to form a guide gap 15 arranged in the vertical direction; accordingly, the second bracket body 21 is provided with a second clamping portion 25 arranged along the third direction; when the limit buffer assembly 110 is assembled, the second clamping portion 25 of the second bracket 2 can be inserted into the guide gap 15 of the first bracket 1, so that it moves relative to each other in the vertical direction, and the projections of the first clamping portion 14 and the second clamping portion 25 along the second direction at least partially overlap, so that the first clamping portion 14 and the second clamping portion 25 are clamped, ensuring the connection reliability and connection accuracy between the first bracket 1 and the second bracket 2.

[0110] Furthermore, an avoidance structure is provided at a position corresponding to the first bracket body 11 and the first clamping portion 14. The avoidance structure is a structure formed by a side wall of the guide groove 12 away from the first clamping portion 14 being recessed in a direction away from the first clamping portion 14 to ensure that the guide gap 15 formed between the first clamping portion 14 and the first bracket body 11 has a sufficient width so that the second clamping portion 25 can be inserted into the guide gap 15 and clamped with the first clamping portion 14.

[0111] In one embodiment, as shown in Figures 1, 4 and 5, the first bracket body 11 includes a first body portion 111, a first connecting portion 112 extending outward from both ends of the first body portion 111 along a third direction, and a second connecting portion 113 extending from the first connecting portion 112 along the first direction. The first body portion 111, the first connecting portion 112 and the second connecting portion 113 cooperate to form a guide groove 12; the second connecting portion 113 extends a first clamping portion 14 inwardly along the third direction, and the first clamping portion 14 cooperates with the first body portion 111 to form a guide gap 15; the second bracket 2 also includes a third connecting portion 26 extending outward from both ends of the second bracket body 21 along the third direction, and the third connecting portion 26 is provided with a first assembly hole 22; the second clamping portion 25 and the third connecting portion 26 are spaced apart along the first direction.

[0112] As an example, the first bracket 1 includes a first main body portion 111, a first connecting portion 112 extending outward from both ends of the first main body portion 111 along a third direction, and a second connecting portion 113 extending from the first connecting portion 112 along the first direction; the first main body portion 111, the first connecting portion 112 and the second connecting portion 113 cooperate to form a U-shaped guide groove 12; the second connecting portion 113 extends inward along the third direction to form a first clamping portion 14, and the first clamping portion 14 cooperates with the first main body portion 111 to form a guide gap 15. For example, when the first direction is the vertical direction, the second direction is the front-to-back direction, and the third direction is the left-to-right direction, the first body portion 111 is a substantially rectangular structure, the length direction of the first body portion 111 is the left-to-right direction, the width direction of the first body portion 111 is the vertical direction, the first connecting portion 112 is a connecting portion extending outward in the left-to-right direction from the lower area of ​​the short side of the first body portion 111, and the second connecting portion 113 is a connecting portion extending upward in the vertical direction from one end of the first connecting portion 112, so that the first body portion 111, the first connecting portion 112, and the second connecting portion 113 cooperate to form a guide groove 12 that opens upward. In addition, the first bracket 1 also includes a first clamping portion 14 extending inward in the left-to-right direction from the upper area of ​​the second connecting portion 113, so that a guide gap 15 is formed between the first clamping portion 14 and the first body portion 111 to facilitate clamping with the second bracket body 21.

[0113] As an example, the second bracket 2 also includes a third connecting portion 26 extending outward along the third direction from both ends of the second bracket body 21. Specifically, the third connecting portion 26 extends outward along the third direction from both ends of the second bracket body 21, and a first assembly hole 22 is provided on the third connecting portion 26; the second bracket body 21 also extends outward along the third direction from both ends of the third direction. The second clamping portion 25 and the third connecting portion 26 are spaced apart along the first direction so that there is a gap between the third connecting portion 26 and the second clamping portion 25 to avoid interference with the first fastener 41 along the guide groove 12. For example, when the first direction is the vertical direction, the second direction is the front-to-back direction, and the third direction is the left-to-right direction, the second bracket body 21 is an approximately rectangular structure, the length direction of the second bracket body 21 is the left-to-right direction, the width direction of the second bracket body 21 is the vertical direction, the third connecting portion 26 is a connecting portion extending outward from the lower area of ​​the short side of the second bracket body 21 along the left-to-right direction, and the second clamping portion 25 is a clamping portion extending outward from the upper area of ​​the short side of the second bracket body 21 along the left-to-right direction, so that the second clamping portion 25 and the third connecting portion 26 are spaced apart along the first direction, so that there is a gap between the third connecting portion 26 and the second clamping portion 25 to avoid interference with the first fastener 41 along the guide groove 12.

[0114] In this example, when the first bracket body 11 is at the back and the second bracket body 21 is at the front, the first clamping portion 14 extending from the first bracket body 11 can be placed in front and the second bracket body 21 extending from the second bracket body 21 can be placed at the back, so that the two are staggered. Without adding any other structures, the clamping structure of the first bracket 1 and the second bracket 2 can be realized. The structure is simple and the overall occupied area is small, which can meet the requirements of miniaturization design.

[0115] In one embodiment, as shown in Figures 1, 4 and 5, the second bracket 2 also includes a third bracket body 27 extending from one side of the second bracket body 21 along the second direction, and the second bracket body 21 is provided with a first through hole 28; the first bracket 1 also includes a first baffle 16 extending from one side of the first bracket body 11 along the second direction, and the first baffle 16 passes through the first through hole 28 and is arranged opposite to the third bracket body 27; the first end of the buffer spring 3 is connected to the first baffle 16, and the second end of the buffer spring 3 is connected to the third bracket body 27; the second bracket body 21, the first bracket body 11 and the first workpiece are detachably connected; the third bracket body 27 is used to abut the second workpiece when the first workpiece moves to a preset position relative to the second workpiece.

[0116] As an example, the second bracket 2 further includes a third bracket body 27 extending from a side of the second bracket body 21 along the second direction. The second bracket body 21 is provided with a first through hole 28, the axis of the first through hole 28 being oriented in the second direction, which is perpendicular to the first direction. For example, when the first direction is vertical, the second direction is front-to-back, and the third direction is left-to-right, the second bracket body 21 is approximately rectangular, with the length of the second bracket body 21 being oriented in the left-to-right direction and the width of the second bracket body 21 being oriented in the vertical direction. The third bracket body 27 extends from the long edge of the second bracket body 21 along the second direction, such that the cross-sections of the second bracket body 21 and the third bracket body 27 along the first direction are L-shaped.

[0117] As an example, the first bracket 1 further includes a first baffle 16 extending from a side of the first bracket body 11 in the second direction, specifically, the first baffle 16 extending from the first body portion 111 in the second direction. During assembly of the first bracket 1 and the second bracket 2, the first baffle 16 can be passed through the first through-hole 28 of the second bracket body 21 and positioned opposite the third bracket body 27, thereby forming an accommodation space between the first baffle 16 and the third bracket body 27 to accommodate the buffer spring 3. In this example, if the first body portion 111 is approximately rectangular, the shape of the first baffle 16 can be first cut into the first body portion 111. Then, an external force in the second direction is applied to the first baffle 16 to orient the first baffle 16 perpendicularly to the first body portion 111, thereby completing the production of the first baffle 16. This manufacturing process is simple, convenient, and inexpensive. In this example, the side of the first bracket body 11 away from the first baffle 16 is used to abut against the first workpiece. Specifically, the side of the first bracket body 11 away from the first baffle 16 is fitted with one side of the first workpiece, and then the first fastener 41 and the second fastener 42 are used to connect the second bracket body 21, the first bracket body 11 and the first workpiece into an integrated structure.

[0118] As an example, the first end of the buffer spring 3 is connected to the first baffle 16 of the first bracket 1, and the second end of the buffer spring 3 is connected to the third bracket body 27 of the second bracket 2. The buffer spring 3 can be compressed and extended along the first direction, and can realize the self-adaptive adjustment function to adapt to the surface difference between the first workpiece and the second workpiece to ensure the precise limitation of the limit buffer assembly 110.

[0119] As an example, when the first bracket body 11 and the second bracket body 21 are both long strip structures arranged along the third direction, the second assembly hole 13 is arranged in the middle position of the first bracket body 11, and the two guide grooves 12 are arranged on both sides of the first bracket body 11 along the third direction. A first baffle 16 can be provided between the second assembly hole 13 and each guide groove 12, and two buffer springs 3 can be used to connect the two first baffles 16 and the third bracket body 27 to ensure their limiting buffering effect.

[0120] In one embodiment, as shown in Figures 1, 4 and 5, the first baffle 16 includes a baffle connecting portion 161 extending from a side of the first bracket body 11 along the second direction, and a baffle main portion 162 extending from the baffle connecting portion 161 along the second direction; the first through hole 28 includes a first through hole portion 281 extending from a side edge of the second bracket body 21 close to the third bracket body 27 along the first direction, and a second through hole portion 282 extending from the first through hole portion 281 along the first direction; the widths of the baffle connecting portion 161, the second through hole portion 282, the baffle main portion 162 and the first through hole portion 281 increase in sequence; the first end of the buffer spring 3 is connected to the baffle main portion 162, and the second end of the buffer spring 3 is connected to the third bracket body 27.

[0121] As an example, the first baffle 16 includes a baffle connecting portion 161 extending in the second direction from a side of the first bracket body 11 (specifically, the first body portion 111), and a baffle main portion 162 extending in the second direction from the baffle connecting portion 161. The width of the baffle connecting portion 161 is smaller than the width of the baffle main portion 162, so that an accommodation gap matching the length of the baffle connecting portion 161 is formed between the first body portion 111 and the baffle main portion 162. The first through hole 28 includes a first through hole portion 281 extending in the first direction from a side edge of the second bracket body 21 near the third bracket body 27, and a second through hole portion 282 extending in the first direction from the first through hole portion 281. In this example, the widths of the baffle connecting portion 161, the second through-hole portion 282, the baffle main portion 162, and the first through-hole portion 281 increase sequentially, so that during assembly of the first bracket 1 and the second bracket 2, the first baffle 16 of the first bracket 1 (including the baffle main portion 162 and the baffle connecting portion 161) can first be passed through the first through-hole portion 281, and then the first baffle 16 can be moved so that the baffle connecting portion 161 of the first baffle 16 is disposed within the second through-hole portion 282, so that the second bracket body 21 is snapped into the accommodation gap between the first body portion 111 and the baffle main portion 162, thereby ensuring the reliability and connection accuracy between the first bracket 1 and the second bracket 2. One end of the buffer spring 3 is connected to the baffle main portion 162, and the other end of the buffer spring 3 is connected to the third bracket body 27. The buffer spring 3 can be compressed and extended along the first direction, realizing a self-adjusting function to adapt to the surface difference between the first workpiece and the second workpiece, thereby ensuring the precise positioning of the limit buffer assembly 110.

[0122] In one embodiment, as shown in Figures 1, 4 and 5, the third bracket body 27 is provided with a second through hole 29 and a second baffle 210 located in the second through hole 29; the first baffle 16 passes through the first through hole 28 and is arranged opposite to the second baffle 210; the first end of the buffer spring 3 is connected to the first baffle 16, and the second end of the buffer spring 3 is connected to the second baffle 210.

[0123] As an example, the third bracket body 27 is provided with a second through-hole 29 communicating with the first through-hole 28 and a second blocking piece 210 positioned within the second through-hole 29. The axial direction of the second through-hole 29 is the first direction. In this example, the second through-hole 29 is communicated with the second through-hole portion 282, so that a through-hole structure matching the overall shape of the first through-hole 28 and the second through-hole 29 is cut out in the second bracket body 21. The first bracket body 11 is then bent as a whole to form the second bracket body 21 and the third bracket body 27 in an L-shape, thereby forming the first through-hole 28 in the second bracket body 21 and the second through-hole 29 in the third bracket body 27. This simplifies the manufacturing process of the first through-hole 28 and the second through-hole 29. A second stopper 210 is disposed within the second through-hole 29. One side edge of the second stopper 210 is in contact with the third bracket body 27, while a gap exists between the rest of the second stopper 210 and the third bracket body 27. When the buffer spring 3 is secured between the first stopper 16 and the second stopper 210, the second stopper 210 deforms and absorbs energy under the action of the buffer spring 3, thereby providing a position-limiting and buffering function. In this example, the second stopper 210 extends from a side wall of the third bracket body 27 away from the second through-hole 29 and toward the second bracket body 21 along a second direction. The extension direction of the second stopper 210 is opposite to that of the first stopper 16, further ensuring uniform force on the buffer spring 3.

[0124] Furthermore, the first bracket 1 includes two first baffles 16 arranged at intervals, and the first assembly hole 22 is arranged between the two first baffles 16; accordingly, the second bracket 2 is provided with two first through holes 28, and each first through hole 28 is correspondingly provided with a second baffle 210, and each second baffle 210 is arranged corresponding to a first baffle 16, so that the first bracket 1 and the second bracket 2 are adjusted to adapt to the absorption surface difference through two buffer springs 3 to ensure the limiting accuracy of the limit buffer assembly 110 on the first workpiece.

[0125] In one embodiment, as shown in FIG1 , FIG2 and FIG4 , the first bracket 1 further includes a third clamping portion 17 extending from one side of the first bracket body 11 along the second direction away from the first blocking piece 16 , and the third clamping portion 17 is used to clamp with the first workpiece.

[0126] As an example, the first bracket 1 further includes a third engaging portion 17 extending from a side of the first bracket body 11 along the second direction away from the first stopper 16. Specifically, the third engaging portion 17 and the first stopper 16 are disposed on opposite sides of the first bracket body 11, respectively, such that one side of the first bracket body 11 engages with the first workpiece via the third engaging portion 17 to achieve a position-limiting connection therebetween. In this example, the side of the first bracket body 11 away from the first stopper 16 is brought into contact with the first workpiece, and the first fastener 41 and the second fastener 42 are then used to securely connect the second bracket 2, the first bracket 1, and the first workpiece, thereby ensuring the buffer position-limiting accuracy between the first bracket 1 and the second bracket 2.

[0127] In one embodiment, the buffer spring 3 is a conical spring, the large-diameter end of the conical spring is connected to the first blocking piece 16 , and the small-diameter end of the conical spring is connected to the third bracket body 27 .

[0128] As an example, the buffer spring 3 is a conical spring, the large-diameter end of the conical spring is connected to the first baffle 16, and the small-diameter end of the conical spring is connected to the third bracket body 27. Specifically, it can be directly connected to the third bracket body 27, or it can be connected to the second baffle 210 set on the third bracket body 27. It can achieve smaller deformation and withstand larger loads, and the axial space is more compact, the deformation per unit volume is larger, and it has better buffering and shock absorption effects.

[0129] An embodiment of the present invention provides a position limiting buffer mechanism 100, as shown in Figures 1 and 2, the position limiting buffer mechanism 100 includes the position limiting buffer component 110 and the flexible buffer component 120 in the above embodiment; the first side surface of the flexible buffer component 120 is connected to the second bracket 2, and the second side surface of the flexible buffer component 120 is used to abut against the second workpiece when the first workpiece moves to a preset position relative to the second workpiece.

[0130] As an example, the position limiting buffer mechanism 100 not only includes the position limiting buffer component 110 in the above embodiment, but also includes a flexible buffer component 120, the first side of the flexible buffer component 120 is connected to the second bracket 2 of the position limiting buffer component 110, and the second side of the flexible buffer component 120 is used to abut against the second workpiece when the first workpiece moves to a preset position relative to the second workpiece.

[0131] In this example, bolts or other fasteners can be used to first combine the limit buffer assembly 110 and the flexible buffer assembly 120 into an integrated structure. Specifically, bolts or other fasteners can be used to connect the first side of the flexible buffer assembly 120 to the second bracket 2; then, the second fastener 42 is used to pre-install the limit buffer assembly 110 on the first workpiece. When the first workpiece moves to a preset position relative to the second workpiece, such as when the second side of the flexible buffer assembly 120 installed on the second bracket 2 contacts the second workpiece, the relative position or relative angle of the first workpiece and the second workpiece can be adjusted according to the face difference matching between the two to adjust the face difference, and then the buffer spring 3 is used to adapt to absorb the adjustment amount of the face difference. After the face difference is adjusted, the first fastener 41 is used to lock the limit buffer assembly 110 on the first workpiece to lock the spring adjustment amount, thereby ensuring the buffer limit accuracy of the limit buffer assembly 110.

[0132] In one embodiment, as shown in Figure 6, the flexible buffer assembly 120 includes a flexible buffer block 51 and a buffer block skeleton 52, and the flexible buffer block 51 wraps the buffer block skeleton 52; the first side of the flexible buffer block 51 is connected to the second bracket 2, and the second side of the flexible buffer assembly 120 abuts against the second workpiece when the first workpiece moves to a preset position relative to the second workpiece.

[0133] As an example, the flexible buffer assembly 120 includes a flexible buffer block 51 and a buffer block skeleton 52, and the flexible buffer block 51 wraps the buffer block skeleton 52. The flexible buffer block 51 can be a structure with a buffering effect made of rubber or other flexible materials. The buffer block skeleton 52 can be a structure mainly made of metal or other hard materials that plays a supporting role. In this example, the flexible buffer block 51 includes a wrapped buffer block skeleton 52, and the buffer block skeleton 52 is used to provide support. The first side of the flexible buffer block 51 is connected to the third bracket body 27 of the second bracket 2, and the second side of the flexible buffer assembly 120 abuts against the second workpiece when the first workpiece moves to a preset position relative to the second workpiece, and the flexible buffer block 51 is used to achieve a limited buffering effect, wherein the first side and the second side of the flexible buffer block 51 are two oppositely arranged side surfaces.

[0134] In one embodiment, as shown in Figures 1, 4, 5 and 6, the first bracket 1 includes a first bracket body 11 and a guide groove 12 arranged on the first bracket body 11 along a first direction; the second bracket 2 also includes a third connecting portion 26 extending outward from both ends of the second bracket body 21 along a third direction, and the third connecting portion 26 is provided with a first assembly hole 22; the limiting buffer assembly 110 also includes a first fastener 41, and the first fastener 41 is used to pass through the first assembly hole 22, the guide groove 12 and the first workpiece when the second bracket 2 abuts against the second workpiece to lock the second bracket 2, the first bracket 1 and the first workpiece; a first avoidance groove 511 is also provided on the flexible buffer block 51, and the first avoidance groove 511 is arranged opposite to the third connecting portion 26 for avoiding the first fastener 41.

[0135] As an example, the first bracket 1 includes a first bracket body 11 and a guide groove 12 provided on the first bracket body 11 along a first direction. The guide groove 12 may be a U-shaped guide groove with an opening at one end. The second bracket 2 also includes a third connecting portion 26 extending outwardly from both ends of the second bracket body 21 along the third direction. The third connecting portion 26 is provided with a first assembly hole 22. For example, when the first direction is a vertical direction, the second direction is a front-to-back direction, and the third direction is a left-to-right direction, the second bracket body 21 is a substantially rectangular main body portion, the length direction of the second bracket body 21 is a left-to-right direction, the width direction of the second bracket body 21 is a vertical direction, and the third connecting portion 26 is a connecting portion extending outwardly from a region below a short side of the second bracket body 21 along the left-to-right direction. In this example, the limit buffer assembly 110 can be pre-installed on the first workpiece so that the limit buffer assembly 110 and the first workpiece form an integrated structure. When the first workpiece moves to a preset position relative to the second workpiece, that is, when the flexible assembly in the flexible buffer assembly 120 contacts the second workpiece, the relative position or relative angle of the first workpiece and the second workpiece can be adjusted according to the face difference matching between the two to adjust the face difference, and then the adjustment amount of the face difference is adaptively absorbed by the compression and extension of the buffer spring 3 itself. In this process, the relative position between the first assembly hole 22 and the guide groove 12 changes adaptively. After the face difference is adjusted, the first fastener 41 is used to lock the limit buffer assembly 110 on the first workpiece to lock the spring adjustment amount, thereby ensuring the buffer limit accuracy of the limit buffer assembly 110. In this example, a first avoidance groove 511 is also provided on the flexible buffer block 51. The first avoidance groove 511 is arranged opposite to the third connecting portion 26 on the second bracket body 21, and is used to avoid the first fastener 41 assembled in the first assembly hole 22 and the guide groove 12, thereby ensuring the compactness of the overall structure and meeting the miniaturization design requirements.

[0136] In one embodiment, as shown in Figures 1, 4, 5 and 6, the second bracket body 21 also includes a third bracket body 27 extending from one side of the second bracket body 21 along the second direction, the second bracket body 21 is provided with a first through hole 28, the third bracket body 27 is provided with a second through hole 29 and a second baffle 210 located in the second through hole 29; the first bracket 1 also includes a first baffle 16 extending from one side of the first bracket body 11 along the second direction, the first baffle 16 passes through the first through hole 28 and is arranged opposite to the second baffle 210; the first end of the buffer spring 3 is connected to the first baffle 16, and the second end of the buffer spring 3 is connected to the second baffle 210; the flexible buffer block 51 is also provided with a second avoidance groove 512, and the second avoidance groove 512 is arranged opposite to the second baffle 210 for avoiding the second baffle 210.

[0137] As an example, the second bracket body 21 further includes a third bracket body 27 extending from a side of the second bracket body 21 in the second direction. The second bracket body 21 is provided with a first through-hole 28, the axis of which is oriented in the second direction. The third bracket body 27 is provided with a second through-hole 29 and a second blocking piece 210 located within the second through-hole 29, the axis of which is oriented in the first direction. For example, when the first direction is vertical, the second direction is front-to-back, and the third direction is left-to-right, the second bracket body 21 is a substantially rectangular main body portion, the length of the second bracket body 21 is lateral, and the width of the second bracket body 21 is vertical. The third bracket body 27 extends from the long edge of the second bracket body 21 in the second direction, such that the cross-sections of the second bracket body 21 and the third bracket body 27 along the first direction are L-shaped. The third bracket body 27 is provided with a second baffle 210 in and located in the second through hole 29. One side edge of the second baffle 210 is connected to the third bracket body 27, and there is a gap between the other part and the third bracket body 27. When the buffer spring 3 is clamped and fixed between the first baffle 16 and the second baffle 210, the second baffle 210 can be deformed and absorb energy under the action of the buffer spring 3 to play a limiting buffering role.

[0138] As an example, the first bracket 1 further includes a first stopper 16 extending from the first bracket body 11 (specifically, from the first body portion 111) along the second direction. During assembly of the first bracket 1 and the second bracket 2, the first stopper 16 can be passed through the first through-hole 28 of the second bracket body 21 and positioned opposite the second stopper 210, thereby forming an accommodation space between the first stopper 16 and the second stopper 210 to accommodate the buffer spring 3. In this example, the first end of the buffer spring 3 is connected to the first stopper 16, and the second end of the buffer spring 3 is connected to the second stopper 210. This allows the buffer spring 3 to automatically adjust the amount of surface difference to be absorbed, thereby ensuring the positioning accuracy of the limit buffer assembly 110 on the first workpiece.

[0139] As an example, a second avoidance groove 512 is further provided on the flexible buffer block 51. The second avoidance groove 512 is arranged opposite to the second blocking piece 210 and is used to avoid the second blocking piece 210 to provide the buffer spring 3 with an activity space for compression and extension in the axial direction.

[0140] In one embodiment, as shown in Figures 1, 3, 5 and 6, a first connecting hole 271 is further provided on the third bracket body 27; a second connecting hole 513 is further provided on the flexible buffer block 51; a third connecting hole 521 is further provided on the buffer block skeleton 52; the flexible buffer assembly 120 also includes a third fastener 53, and the third fastener 53 is used to pass through the first connecting hole 271, the second connecting hole 513 and the third connecting hole 521 to fix the limiting buffer assembly 110 and the flexible buffer assembly 120.

[0141] As an example, the third bracket body 27 further comprises a first connection hole 271 for assembling a fastener. Specifically, two first connection holes 271 are spaced apart on the third bracket body 27, and the axial direction of the first connection hole 271 is the first direction. Accordingly, the flexible buffer block 51 further comprises a second connection hole 513 for assembling a fastener. Specifically, two second connection holes 513 are spaced apart on the flexible buffer block 51, and the axial direction of the second connection hole 513 is the first direction. The buffer block skeleton 52 also comprises a third connection hole 521 for assembling a fastener. Specifically, two third connection holes 521 are spaced apart on the buffer block skeleton 52, and the axial direction of the third connection hole 521 is the first direction. In this example, the flexible buffer assembly 120 further comprises a third fastener 53, which is inserted through the first connection hole 271, the second connection hole 513, and the third connection hole 521 and locked to secure the position-limiting buffer assembly 110 and the flexible buffer assembly 120. The third fastener 53 may be, but is not limited to, a bolt and a nut. The bolt and the nut cooperate to achieve a detachable connection between the fixed limiting buffer assembly 110 and the flexible buffer assembly 120 .

[0142] An embodiment of the present invention provides a limit buffer assembly 200, as shown in Figures 1-3, the limit buffer assembly 200 includes the limit buffer mechanism 100 and the sensing component 6 in the above embodiment; the first end of the sensing component 6 is set on the limit buffer mechanism 100 and extends out of the second side of the flexible buffer component 120; the second end of the sensing component 6 is used to be electrically connected to the control module corresponding to the first workpiece.

[0143] As an example, the limit buffer assembly 200 includes the limit buffer mechanism 100 and the sensing component 6 in the above-mentioned embodiment; the first end of the sensing component 6 is arranged on the limit buffer mechanism 100 and extends out of the contact surface of the limit buffer mechanism 100, and the contact surface of the limit buffer mechanism 100 here is specifically the second side surface of the flexible buffer component 120 abutting against the second workpiece; the second end of the sensing component 6 is used to be electrically connected to the control module corresponding to the first workpiece. When the first workpiece moves to a preset position relative to the second workpiece, so that the contact surface of the limit buffer mechanism 100 contacts the second workpiece, the sensing component 6 extending out of the contact surface of the limit buffer mechanism 100 will sense that the first workpiece has moved to the preset position. At this time, the sensing signal will be output to the control module corresponding to the first workpiece to feedback the position or angle of the first workpiece, so as to achieve precise control of the movement of the first workpiece, so as to ensure the accuracy of the limit buffering of the limit buffer assembly 200, so as to provide better protection for the first workpiece and its second workpiece.

[0144] In one embodiment, the compression stroke of the buffer spring 3 is greater than the limit stroke of the sensing component 6 extending out of the second side surface of the flexible buffer component 120 .

[0145] As an example, the first end of the sensing component 6 is assembled in the switch assembly hole 101, and its end extends a certain distance from the contact surface of the limit buffer mechanism 100, specifically a certain distance from the second side of the flexible buffer component 120 (i.e., the second side of the flexible buffer block 51). This distance is greater than the trigger stroke of the sensing component 6 and less than the limit stroke of the sensing component 6 to ensure the normal operation of the sensing component 6. The trigger stroke here refers to the minimum stroke at which the sensing component 6 can start sensing, and the limit stroke refers to the maximum stroke at which the sensing component 6 can work normally. In this example, the compression stroke of the buffer spring 3 is greater than the limit stroke of the sensing component 6 extending from the second side of the flexible buffer component 120 to avoid damage to the sensing component 6 when the first workpiece and the second workpiece approach each other.

[0146] In one embodiment, as shown in Figure 9, the limiting buffer mechanism 100 is provided with a switch assembly hole 101 that passes through the second bracket 2 and the flexible buffer component 120; the first end of the sensing component 6 is assembled in the switch assembly hole 101 and extends out of the second side surface of the flexible buffer component 120.

[0147] As an example, the flexible buffer assembly 120 includes a flexible buffer block 51 and a buffer block skeleton 52. The flexible buffer block 51 wraps the buffer block skeleton 52. The first side of the flexible buffer block 51 is connected to the third bracket body 27 of the second bracket 2, and the second side of the flexible buffer block 51 abuts against the second workpiece when the first workpiece moves to a preset position relative to the second workpiece. The flexible buffer block 51 is used to achieve a limited buffering effect, wherein the first side and the second side of the flexible buffer block 51 are two oppositely arranged sides, and the second side of the flexible buffer block 51 is the second side of the flexible buffer assembly 120.

[0148] As an example, the position limiting and buffering mechanism 100 is provided with a switch assembly hole 101 that passes through the second bracket 2 of the position limiting and buffering assembly 110 and the flexible buffering assembly 120. The switch assembly hole 101 is used to assemble the sensing assembly 6. In this example, the switch assembly hole 101 that passes through the second bracket 2 of the position limiting and buffering assembly 110 and the flexible buffering assembly 120 includes a first switch hole provided in the second bracket 2 and a second switch hole provided in the flexible buffering assembly 120.

[0149] As an example, the first end of the sensing component 6 is assembled within the switch assembly hole 101 and extends beyond the second side surface of the flexible buffer component 120. In this example, the first end of the sensing component 6 can be sequentially passed through the first switch hole on the second bracket 2 and the second switch hole on the flexible buffer component 120, so that its end extends beyond the second side surface of the flexible buffer component 120. This allows sensing of the relative position of the first workpiece and the second workpiece before the flexible buffer block 51 abuts the second workpiece. In this example, when the first workpiece moves to a preset position relative to the second workpiece, i.e., when the first end of the sensing component 6 extends beyond the second side surface of the flexible buffer component 120 and contacts the second workpiece, the second end of the sensing component 6 sends a sensing signal to the control module to provide feedback on the position or angle of the first workpiece. Upon receiving the sensing signal, the control module controls the first workpiece to stop moving, thereby precisely controlling the first workpiece's stop position, ensuring the accuracy of the limit buffering performed by the limit buffer assembly 200, and providing better protection for the first workpiece and the second workpiece.

[0150] In one embodiment, as shown in Figures 1 to 3, 7 and 9, the sensing assembly 6 includes a connecting harness 61, a sensing switch 62 and a harness connector 63; one end of the connecting harness 61 is connected to the sensing switch 62, and the other end of the connecting harness 61 is connected to the harness connector 63; the sensing switch 62 is assembled in the switch assembly hole 101, and the end of the sensing switch 62 extends out of the second side of the flexible buffer assembly 120; the harness connector 63 is used to electrically connect to the control module corresponding to the first workpiece.

[0151] As an example, the sensing component 6 includes a connecting harness 61, a sensing switch 62 and a harness connector 63 respectively arranged at both ends of the connecting harness 61; the sensing switch 62 is inserted into the switch assembly hole 101 from one side of the second bracket 2, so that the end of the sensing switch 62 extends a certain distance from the contact surface of the flexible buffer component 120, specifically, the sensing switch 62 passes through the first switch hole on the second bracket 2 and the second switch hole on the flexible buffer component 120 in sequence, so that its end extends a certain distance from the second side surface of the flexible buffer component 120, and the distance is greater than the trigger stroke of the sensing switch 62 and less than the limit stroke of the sensing switch 62, so as to ensure the normal operation of the sensing switch 62; the harness connector 63 is used to electrically connect to the control module corresponding to the first workpiece. In this example, when the first workpiece moves relative to the second workpiece to the point where the sensing switch 62 extends out from the second side of the flexible buffer component 120 and contacts the second workpiece, the sensing switch 62 will send a sensing signal to the control module through the connecting harness 61 and the harness connector 63 to feedback the position or angle of the first workpiece, so that after receiving the sensing signal, the control module controls the first workpiece to stop moving, so as to achieve precise control of the stop position of the first workpiece, to ensure the accuracy of the limit buffer assembly 200 in performing limit buffering, and to provide better protection for the first workpiece and its second workpiece.

[0152] In one embodiment, as shown in FIG. 3 , FIG. 7 and FIG. 9 , the sensing assembly 6 further includes a switch fixing base 64 and a sensing switch 62 , which is used to fix the switch fixing base 64 in the switch assembly hole 101 .

[0153] As an example, the sensing component 6 further includes a switch fixing base 64 and a sensing switch 62 , which are used to fix the switch fixing base 64 in the switch assembly hole 101 to prevent the sensing switch 62 from falling off from the switch assembly hole 101 and affecting the normal operation of the sensing switch 62 .

[0154] In one embodiment, as shown in Figures 3, 7, 8 and 9, the induction switch 62 includes a switch connecting portion 621 and a switch body 622 extending from one side of the switch connecting portion 621. A limit through hole 623 is provided on the switch connecting portion 621, and the axial direction of the limit through hole 623 is perpendicular to the axial direction of the switch assembly hole 101; the switch connecting portion 621 is connected to the connecting harness 61; the switch fixing seat 64 includes a first substrate 641, a second substrate 642 extending vertically from a first side edge of the first substrate 641, and a third substrate 643 extending vertically from a middle position of a second side of the first substrate 641, the second substrate 642 being farther away from the first substrate 641. A first protrusion 644 extends vertically from one side of the first substrate 641, and a second protrusion 645 extends vertically from one side of the third substrate 643. The extension direction of the second protrusion 645 is the same as the extension direction of the first protrusion 644. The first protrusion 644 is assembled in the limiting through hole 623. The first side edge of the first substrate 641 and one side of the second substrate 642 are both in contact with one side of the switch connecting part 621. The second protrusion 645 is in contact with one side of the switch body 622. The third substrate 643 and the switch body 622 are inserted into the switch assembly hole 101, and the end of the switch body 622 extends out of the second side surface of the flexible buffer component 120.

[0155] As an example, the inductive switch 62 includes a switch connecting portion 621 and a switch body 622 extending from one side of the switch connecting portion 621. The switch body 622 is a component for signal sensing, while the switch connecting portion 621 is a structure for mounting the switch body 622 and connecting it to the connecting harness 61. The switch connecting portion 621 is provided with a limit hole 623, the axis of which is perpendicular to the axis of the switch assembly hole 101. Correspondingly, the switch fixing base 64 includes a first substrate 641, a second substrate 642 extending vertically from a first side edge of the first substrate 641, and a third substrate 643 extending vertically from a middle position of a second side of the first substrate 641. A first protrusion 644 extends vertically from a side of the second substrate 642 away from the first substrate 641, and a second protrusion 645 extends vertically from a side of the third substrate 643. That is, the second substrate 642 and the third substrate 643 are respectively arranged on both sides of the first substrate 641, and the first protrusion 644 on the second substrate 642 and the second protrusion 645 on the third substrate 643 extend in the same direction.

[0156] The process of assembling the sensing switch 62 to the switch assembly hole 101 of the limit buffer mechanism 100 using the switch fixing seat 64 is as follows: first, assemble the first protrusion 644 on the second substrate 642 into the limit through hole 623 of the switch connecting part 621, so that the first side edge of the first substrate 641 abuts against one side of the switch connecting part 621, and one side of the second substrate 642 also abuts against the same side of the switch connecting part 621, and accordingly, the second protrusion 645 on the third substrate 643 abuts against one side of the switch body 622; then, the third substrate 643 and the switch body 622 that abut each other are inserted into the switch assembly hole 101 as a whole, so that the third substrate 643 and the switch body 622 are interference fit with the flexible buffer block 51, so as to fix the sensing switch 62 in the switch assembly hole 101 and ensure the reliability of the connection.

[0157] In one embodiment, as shown in Figures 3, 6, 8 and 9, the flexible buffer block 51 is further provided with a first mounting hole 514; a second mounting hole 646 is provided on the side of the first substrate 641 away from the second substrate 642, and the second mounting hole 646 is arranged opposite to the first mounting hole 514; the sensing component 6 also includes a fourth fastener 65 passing through the second mounting hole 646 and the first mounting hole 514.

[0158] As an example, a second mounting hole 646 is provided on the side of the first substrate 641 away from the second substrate 642. Specifically, the first substrate 641 is divided into two areas with the middle position where the third substrate 643 is located. The second substrate 642 is arranged at the edge position of one of the areas, and the second mounting hole 646 is arranged on the other area. There is no overlap between the second mounting hole 646 and the third substrate 643 in the axial direction, so as to facilitate the installation of the fastener in the second mounting hole 646.

[0159] Correspondingly, the position-limiting buffer mechanism 100 also includes a first mounting hole 514 provided on the flexible buffer block 51. In this example, the position-limiting buffer mechanism 100 is provided with a switch assembly hole 101 that passes through the second bracket 2 and the flexible buffer assembly 120. The switch assembly hole 101 includes a first switch hole on the second bracket 2 and a second switch hole on the flexible buffer block 51. The size of the first switch hole is larger than the size of the second switch hole. The first mounting hole 514 is provided on the flexible buffer block 51, and is located at a position where the first switch hole and the second switch hole do not overlap. The sensing component 6 also includes a fourth fastener 65 that passes through the second mounting hole 646 and the first mounting hole 514 to connect the switch fixing seat 64 and the position-limiting buffer mechanism 100 into one body, thereby ensuring the reliability of the connection between the sensing switch 62 and the position-limiting buffer mechanism 100. The fourth fastener 65 here can be, but is not limited to, a rivet.

[0160] An embodiment of the present invention provides an opening and closing movement mechanism, as shown in Figure 10, the opening and closing movement mechanism includes an opening and closing movement part 300 and the limit buffer assembly 200 in the above embodiment; the opening and closing movement part 300 is used for relative movement with the fixed supporting part 400; the limit buffer assembly 200 includes a limit buffer mechanism 100 and a sensing component 6, the limit buffer mechanism 100 is arranged on the opening and closing movement part 300, the first end of the sensing component 6 is arranged on the limit buffer mechanism 100, and extends out of the second side of the flexible buffer component 120; the second end of the sensing component 6 is used to be electrically connected to the control module corresponding to the first workpiece, and when the sensing component 6 is connected to the fixed supporting part 400, the sensing component 6 outputs a sensing signal.

[0161] As an example, the opening and closing motion mechanism includes an opening and closing motion member 300 and the position limiting buffer assembly 200 in the above embodiment. The opening and closing motion member 300 can be connected to the fixed receiving member 400 via a rotating shaft, so that the opening and closing motion member 300 can rotate around the rotating shaft and connect with the fixed receiving member 400 when it rotates to a preset position or angle. That is, the opening and closing motion member 300 here is the first workpiece in the above embodiment, and the fixed receiving member 400 is the second workpiece in the above embodiment.

[0162] The limit buffer assembly 200 includes the limit buffer mechanism 100 and the sensing component 6 in the above-mentioned embodiment. The limit buffer mechanism 100 is arranged on the opening and closing moving part 300. The first end of the sensing component 6 is arranged on the limit buffer mechanism 100 and extends out of the second side of the flexible buffer component 120. The second end of the sensing switch 62 is used to be electrically connected to the control module corresponding to the opening and closing moving part 300. When the opening and closing moving part 300 rotates around its rotation axis to the second side of the flexible buffer component 120 and is about to contact the fixed supporting part 400, the sensing component 6 extending out of the second side of the flexible buffer component 120 will sense that the opening and closing moving mechanism has rotated to a preset position or angle. At this time, a sensing signal will be output to the control module corresponding to the opening and closing moving part 300 to feedback the position or angle of the opening and closing moving part 300, thereby achieving precise control of the movement of the opening and closing moving part 300, to ensure the accuracy of the limit buffering of the limit buffer assembly 200, and to provide better protection for the opening and closing moving part 300 and its fixed supporting part 400.

[0163] An embodiment of the present invention provides a car, comprising a vehicle door, a door frame and the position limiting buffer assembly 200 in the above embodiment; the vehicle door is rotatably connected to the door frame; the position limiting buffer assembly 200 comprises a position limiting buffer mechanism 100 and a sensing component 6, the position limiting buffer mechanism 100 is arranged on the vehicle door, the first end of the sensing component 6 is arranged on the position limiting buffer mechanism 100 and extends out of the second side surface of the flexible buffer component 120; the second end of the sensing component 6 is used to be electrically connected to the control module corresponding to the first workpiece, and when the sensing component 6 is connected to the door frame, the sensing component 6 outputs a sensing signal.

[0164] As an example, a vehicle includes a door, a doorframe, and the position limiting and buffering assembly 200 described in the above embodiment. The door and doorframe are rotatably connected, that is, the door is rotatably connected to the doorframe via a rotating shaft. When the door is rotated to a predetermined position or angle, it engages the doorframe. Specifically, the door here represents the opening and closing member 300 described in the above embodiment, while the doorframe represents the fixed receiving member 400 described in the above embodiment. The limit buffer assembly 200 includes the limit buffer mechanism 100 and the sensing component 6 in the above embodiment. The limit buffer mechanism 100 is arranged on the vehicle door. One end of the sensing component 6 is arranged on the limit buffer mechanism 100 and extends out of the second side of the flexible buffer component 120. The other end of the sensing switch 62 is used to be electrically connected to the control module corresponding to the vehicle door. When the vehicle door rotates around its rotation axis to the second side of the flexible buffer component 120 and is about to contact the door frame, the sensing component 6 extending out of the second side of the flexible buffer component 120 will sense that the opening and closing movement mechanism has rotated to a preset position or angle. At this time, a sensing signal will be output to the control module corresponding to the vehicle door to feedback the position or angle of the vehicle door, thereby achieving precise control of the movement of the vehicle door to ensure the accuracy of the limit buffering of the limit buffer assembly 200 and to provide better protection for the vehicle door and its door frame.

[0165] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention, and should all be included in the scope of protection of the present invention.

Claims

1. A limit buffer assembly, characterized in that: It includes a first bracket, a second bracket and a buffer spring; The first bracket and the second bracket are detachably connected; The buffer spring is arranged along the first direction, the first end of the buffer spring is connected to the first bracket, and the second end of the buffer spring is connected to the second bracket, and is used to drive the first bracket and the second bracket to move along the first direction; The first bracket is used for being detachably connected to the first workpiece, and the second bracket is used for abutting against the second workpiece when the first workpiece moves to a preset position relative to the second workpiece.

2. The position limiting buffer assembly according to claim 1, characterized in that: The position limiting buffer assembly further includes a first fastener; The first fastener is used to lock the second bracket, the first bracket and the first workpiece when the second bracket abuts the second workpiece.

3. The position limiting buffer assembly according to claim 2, characterized in that: The first bracket includes a first bracket body and a guide groove provided on the first bracket body along a first direction; The second bracket includes a second bracket body and a first assembly hole provided on the second bracket body; The first fastener is used to penetrate the first assembly hole, the guide groove and the first workpiece when the second bracket abuts the second workpiece, so as to lock the second bracket, the first bracket and the first workpiece.

4. The position limiting buffer assembly according to claim 3, characterized in that: The first bracket further includes a second assembly hole provided on the first bracket body; The second bracket further includes a relief protrusion extending from the second bracket body in a second direction, the relief protrusion being provided with a third assembly hole, and the second direction is perpendicular to the first direction; The position limiting buffer assembly further includes a second fastener, which is configured to penetrate the third assembly hole, the second assembly hole, and the first workpiece to pre-lock the second bracket, the first bracket, and the first workpiece.

5. The position limiting buffer assembly according to claim 3, characterized in that: The position limiting buffer assembly further includes a sliding guide structure; The sliding guide structure is provided on the first bracket and the second bracket, and is used to guide the first bracket and the second bracket to move along a first direction.

6. The position limiting buffer assembly according to claim 5, characterized in that: The first bracket further includes a first clamping portion extending from the first bracket body along the third direction, the first clamping portion being disposed at an opening of the guide slot, and the first clamping portion cooperates with the first bracket body to form a guide gap; The second bracket further includes a second clamping portion extending from the second bracket body along the third direction, the second clamping portion being inserted into the guide gap and clamped to the first clamping portion; The first clamping portion and the second clamping portion cooperate to form the sliding guide structure.

7. The position limiting buffer assembly according to claim 6, characterized in that: The first bracket body includes a first main body portion, first connecting portions extending outwardly from both ends of the first main body portion along a third direction, and a second connecting portion extending from the first connecting portion along a first direction, wherein the first main body portion, the first connecting portion, and the second connecting portion cooperate to form the guide groove; the second connecting portion extends inwardly from the first clamping portion along the third direction, and the first clamping portion cooperates with the first main body portion to form the guide gap; The second bracket further includes a third connecting portion extending outwardly from both ends of the second bracket body along the third direction, and the third connecting portion is provided with the first assembly hole; the second clamping portion and the third connecting portion are spaced apart along the first direction.

8. The position limiting buffer assembly according to claim 3, characterized in that: The second bracket further includes a third bracket body extending from one side of the second bracket body along the second direction, and the second bracket body is provided with a first through hole; The first bracket further includes a first blocking piece extending from one side of the first bracket body along the second direction, the first blocking piece passing through the first through hole and arranged opposite to the third bracket body; The first end of the buffer spring is connected to the first blocking piece, and the second end of the buffer spring is connected to the third bracket body; The second bracket body, the first bracket body and the first workpiece are detachably connected; the third bracket body is used to abut against the second workpiece when the first workpiece moves to a preset position relative to the second workpiece.

9. The position limiting buffer assembly according to claim 8, characterized in that: The first blocking piece includes a blocking piece connecting portion extending from one side of the first bracket body along the second direction, and a blocking piece main body portion extending from the blocking piece connecting portion along the second direction; The first through hole includes a first through hole portion extending from a side edge of the second bracket body close to the third bracket body along the first direction, and a second through hole portion extending from the first through hole portion along the first direction; The widths of the blocking piece connecting portion, the second through hole portion, the blocking piece main portion and the first through hole portion increase in sequence; The first end of the buffer spring is connected to the blocking piece main body, and the second end of the buffer spring is connected to the third bracket body.

10. The position limiting buffer assembly according to claim 8, characterized in that: The third bracket body is provided with a second through hole and a second blocking piece located in the second through hole; The first blocking piece passes through the first through hole and is arranged opposite to the second blocking piece; The first end of the buffer spring is connected to the first blocking piece, and the second end of the buffer spring is connected to the second blocking piece.

11. The position limiting buffer assembly according to claim 8, characterized in that: The buffer spring is a conical spring, the large-diameter end of the conical spring is connected to the first blocking piece, and the small-diameter end of the conical spring is connected to the third bracket body.

12. The position limiting buffer assembly according to claim 8, characterized in that: The first bracket further includes a third clamping portion extending from one side of the first bracket body along the second direction toward a direction away from the first blocking piece, and the third clamping portion is used to clamp with the first workpiece.

13. A limit buffer mechanism, characterized in that: It comprises the position limiting buffer assembly and the flexible buffer assembly according to any one of claims 1 to 12; The first side surface of the flexible buffer component is connected to the second bracket, and the second side surface of the flexible buffer component is used to abut against the second workpiece when the first workpiece moves to a preset position relative to the second workpiece.

14. The position limiting buffer mechanism according to claim 13, wherein: The flexible buffer assembly includes a flexible buffer block and a buffer block frame, wherein the flexible buffer block wraps the buffer block frame; The first side surface of the flexible buffer block is connected to the second bracket, and the second side surface of the flexible buffer assembly abuts against the second workpiece when the first workpiece moves to a preset position relative to the second workpiece.

15. The position limiting buffer mechanism according to claim 14, characterized in that: The first bracket includes a first bracket body and a guide groove provided on the first bracket body along a first direction; The second bracket further includes a third connecting portion extending outwardly from both ends of the second bracket body along a third direction, and the third connecting portion is provided with a first assembly hole; The position limiting buffer assembly further includes a first fastener, which is used to penetrate the first assembly hole, the guide groove and the first workpiece when the second bracket abuts the second workpiece, so as to lock the second bracket, the first bracket and the first workpiece; The flexible buffer block is further provided with a first avoidance groove, which is arranged opposite to the third connecting portion and is used to avoid the first fastener.

16. The position limiting buffer mechanism according to claim 15, characterized in that: The second bracket body further includes a third bracket body extending from one side of the second bracket body along the second direction, the second bracket body is provided with a first through hole, the third bracket body is provided with a second through hole and a second blocking piece located in the second through hole; The first bracket further includes a first a blocking piece, wherein the first blocking piece passes through the first through hole and is arranged opposite to the second blocking piece; The first end of the buffer spring is connected to the first blocking piece, and the second end of the buffer spring is connected to the second blocking piece; The flexible buffer block is further provided with a second avoidance groove, which is arranged opposite to the second blocking piece and is used to avoid the second blocking piece.

17. The position limiting buffer mechanism according to claim 16, wherein: The third bracket body is further provided with a first connecting hole; The flexible buffer block is further provided with a second connecting hole; The buffer block skeleton is further provided with a third connecting hole; The flexible buffer assembly further includes a third fastener, which is configured to pass through the first connection hole, the second connection hole, and the third connection hole to fix the position limiting buffer assembly and the flexible buffer assembly.

18. A limit buffer assembly, characterized in that: comprising the limit buffer mechanism and the sensing component as described in any one of claims 13 to 17; The first end of the sensing component is arranged on the limit buffer mechanism and extends out of the second side surface of the flexible buffer component; the second end of the sensing component is used to be electrically connected to the control module corresponding to the first workpiece.

19. The position limiting buffer assembly according to claim 18, characterized in that: The compression stroke of the buffer spring is greater than the limit stroke of the sensing component extending out of the second side surface of the flexible buffer component.

20. The position limiting buffer assembly according to claim 18, wherein: The limit buffer mechanism is provided with a switch assembly hole penetrating the second bracket and the flexible buffer component; The first end of the sensing component is assembled in the switch assembly hole and extends out of the second side surface of the flexible buffer component.

21. The position limiting buffer assembly according to claim 20, characterized in that: The induction component includes a connecting wire harness, an induction switch and a wire harness connector; One end of the connecting wire harness is connected to the induction switch, and the other end of the connecting wire harness is connected to the wire harness connector; The inductive switch is mounted in the switch mounting hole, and the end of the inductive switch extends out of the second side surface of the flexible buffer assembly; The wiring harness connector is used to be electrically connected to a control module corresponding to the first workpiece.

22. The position limiting buffer assembly according to claim 21, characterized in that: The sensing component further includes a switch fixing seat, and the sensing switch is used to fix the switch fixing seat in the switch assembly hole.

23. The position limiting buffer assembly according to claim 22, characterized in that: The induction switch includes a switch connecting portion and a switch body extending from one side of the switch connecting portion. The switch connecting portion is provided with a limit through hole, the axis direction of the limit through hole is perpendicular to the axis direction of the switch assembly hole; the switch connecting portion is connected to the connecting harness; The switch fixing base includes a first substrate, a second substrate extending vertically from a first side edge of the first substrate, and a third substrate extending vertically from a middle position of the second side of the first substrate. A first protrusion extends vertically from a side of the second substrate away from the first substrate, and a second protrusion extends vertically from a side of the third substrate. The second protrusion extends in the same direction as the first protrusion. The first protrusion is assembled in the limiting through hole, the first side edge of the first substrate and one side of the second substrate are both in contact with one side of the switch connecting part, the second protrusion is in contact with one side of the switch body, the third substrate and the switch body are inserted into the switch assembly hole, and the end of the switch body extends out of the second side surface of the flexible buffer component.

24. The position limiting buffer assembly according to claim 23, characterized in that: The flexible buffer block is further provided with a first mounting hole; A second mounting hole is provided on a side of the first substrate away from the second substrate, and the second mounting hole is arranged opposite to the first mounting hole; The sensing component further includes a fourth fastener passing through the second mounting hole and the first mounting hole.

25. An opening and closing motion mechanism, characterized in that: It comprises an opening and closing moving part and a position limiting buffer assembly according to any one of claims 18 to 24; The opening and closing moving part is used for relative movement with the fixed receiving part; The limit buffer assembly includes a limit buffer mechanism and a sensing component. The limit buffer mechanism is arranged on the opening and closing moving part. The first end of the sensing component is arranged on the limit buffer mechanism and extends out of the second side surface of the flexible buffer component. The second end of the sensing component is used to be electrically connected to the control module corresponding to the first workpiece. When the sensing component is connected to the fixed supporting part, the sensing component outputs a sensing signal.

26. An automobile comprising a door, a door frame, and the position limiting and buffering assembly according to any one of claims 18 to 24; the door and the door frame are rotatably connected; The limit buffer assembly includes a limit buffer mechanism and a sensing component. The limit buffer mechanism is arranged on the vehicle door. The first end of the sensing component is arranged on the limit buffer mechanism and extends out of the second side surface of the flexible buffer component. The second end of the sensing component is used to be electrically connected to the control module corresponding to the first workpiece. When the sensing component is connected to the door frame, the sensing component outputs a sensing signal.

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