Hinge assembly for swing door

Abstract

The utility model relates to a hinge assembly for swing door, include: mounting bracket, drive assembly is installed to the car body and has output shaft, guide rail, sliding assembly is set up as can slide along guide rail, first connecting rod arm, one end is hinged to the one end of mounting bracket, its other end is hinged to sliding assembly, second connecting rod arm, one end is hinged to the other end of mounting bracket, its other end fixedly connected to the output shaft of drive assembly, and traction connecting rod arm, wherein, when output shaft rotates, second connecting rod arm drives traction connecting rod arm to rotate to make traction connecting rod arm drive sliding assembly along guide rail and slide to make first connecting rod arm cooperate with second connecting rod arm and jointly drive swing door to swing, the utility model can realize the independent opening and closing of vehicle back door, improved the convenience of opening and closing door, and simple and compact structure, convenient installation, and higher adaptability.

Description

Technical Field

[0001] This utility model relates to the field of vehicles, and more particularly to a hinge assembly for a swing door. Background Technology

[0002] Vehicles are an indispensable means of transportation in modern life. With the continuous development of the vehicle industry, people have increasingly higher requirements for vehicle performance. Currently, for small and medium-sized passenger vehicles, in order to increase the opening space of the doors to facilitate passengers getting on or off, the opening and closing method of the doors on one side of the vehicle can be designed as a double-door type, that is, the two doors on one side of the vehicle can open to both sides respectively.

[0003] To avoid the situation where the front door gets stuck in the rear door during a side collision, making it difficult to open the front door, existing vehicles with side-opening doors usually adopt a design where the front door pushes down on the rear door. This means that the front door must be opened first, followed by the rear door, making it impossible to open the front and rear doors in a disorderly manner. This not only increases the inconvenience of opening and closing the doors, but also easily brings a bad riding experience to passengers.

[0004] To address the aforementioned issues, related technologies typically require two drive units to work in tandem, enabling the rear door to follow a predetermined trajectory during its swing to avoid obstacles such as the front door, thus achieving independent opening and closing of the rear door. For example, the structure disclosed in Chinese Utility Model Patent CN220429834U. However, this structure demands a high degree of precision in the coordination of the two drive units, increasing the difficulty and cost of design, installation, and debugging, and also easily leading to door lock misalignment.

[0005] The information disclosed in the background section of this utility model is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that such information constitutes prior art known to those skilled in the art. Utility Model Content

[0006] In view of the shortcomings of the existing technology, the present invention aims to provide a hinge assembly for a swing door, which can realize the independent opening and closing of the rear door with only one drive device, avoiding the problem of high coordination accuracy required by using two or more drive devices at the same time. This not only improves the convenience of opening and closing the door, but also reduces the difficulty and cost of design, installation and debugging, and is less likely to cause door lock misalignment.

[0007] According to an exemplary embodiment of the present invention, a hinge assembly for a swing door is provided, comprising: a mounting bracket mounted to the door; a drive assembly mounted to the vehicle body and having an output shaft; a guide rail mounted to the vehicle body; a sliding assembly configured to slide along the guide rail; a first linkage arm, one end of which is hinged to one end of the mounting bracket and the other end of which is hinged to the sliding assembly; a second linkage arm, one end of which is hinged to the other end of the mounting bracket and the other end of which is fixedly connected to the output shaft of the drive assembly; and a traction linkage arm, one end of which is hinged together with the first linkage arm to the sliding assembly and the other end of which is hinged to the middle of the second linkage arm; wherein, when the output shaft rotates, the second linkage arm drives the traction linkage arm to rotate, so that the traction linkage arm drives the sliding assembly to slide along the guide rail, thereby causing the first linkage arm and the second linkage arm to jointly drive the door to swing.

[0008] According to an exemplary embodiment of the present invention, when the output shaft rotates in the first rotation direction, the traction linkage arm drives the sliding component to slide along the guide rail from the first end of the guide rail to the second end of the guide rail, thereby causing the first linkage arm and the second linkage arm to jointly drive the door to swing in the opening direction; when the output shaft rotates in the second rotation direction, the traction linkage arm drives the sliding component to slide along the guide rail from the second end of the guide rail to the first end of the guide rail, thereby causing the first linkage arm and the second linkage arm to jointly drive the door to swing in the closing direction.

[0009] According to an exemplary embodiment of the present invention, the second linkage arm is configured to be arc-shaped and bent in a direction away from the first linkage arm; the traction linkage arm is hinged to the middle of the second linkage arm by a first hinge pin, and the ratio of the distance from the first hinge pin to the fixed connection point between the second linkage arm and the output shaft to the distance from the first hinge pin to the hinge point between the second linkage arm and the mounting bracket is in the range of 0.5 to 0.7.

[0010] According to an exemplary embodiment of the present invention, the mounting bracket includes: a body; a first support, the first support being disposed at one end of the body and having a second hinge pin; and a second support, the second support being disposed at the other end of the body and having a third hinge pin; wherein, one end of the first linkage arm is hinged to the first support via the second hinge pin, and one end of the second linkage arm is hinged to the second support via the third hinge pin.

[0011] According to an exemplary embodiment of the present invention, the guide rail includes a base plate, an inner plate, a top plate, and an outer plate connected in sequence; wherein, the base plate extends outward from the lower edge of the inner plate, the top plate extends outward from the upper edge of the inner plate, and the outer plate extends downward from the outer edge of the top plate but is not connected to the base plate to form a sliding cavity with an opening, and the opening of the sliding cavity faces the outside of the vehicle.

[0012] According to an exemplary embodiment of the present invention, the sliding assembly includes a movable bracket, the movable bracket including a first sliding plate, a second sliding plate and a mounting plate connected in sequence; the second sliding plate is arranged in a vertical direction; the head of the first sliding plate extends outward from the upper edge of the second sliding plate, and the tail of the first sliding plate extends inward from the upper edge of the second sliding plate to the interior of the sliding cavity of the guide rail; the mounting plate extends outward from the lower edge of the second sliding plate; wherein, a fourth hinge pin is provided between the head of the first sliding plate and the mounting plate, and one end of the traction linkage arm is hinged together with the other end of the first linkage arm to the fourth hinge pin.

[0013] According to an exemplary embodiment of the present invention, the sliding assembly further includes: a load-bearing wheel, which is installed on the inner side of the second sliding plate and placed on the bottom plate of the guide rail to provide support to the movable support; and a guide wheel, which is installed on the upper side of the tail of the first sliding plate to guide the movable support to slide along the guide rail.

[0014] According to an exemplary embodiment of the present invention, the guide rail is a linear guide rail.

[0015] According to an exemplary embodiment of the present invention, the guide rail is a curved guide rail and includes a first arc segment and a second arc segment. When the sliding component slides along the first arc segment of the guide rail, the car door swings along a second predetermined trajectory; when the sliding component slides along the second arc segment of the guide rail, the car door swings along a third predetermined trajectory.

[0016] According to another exemplary embodiment of the present invention, the present invention provides a hinge assembly for a swing door, comprising: a mounting bracket mounted to the door; a guide rail mounted to the vehicle body; a sliding assembly configured to slide along the guide rail; a first linkage arm, one end of which is hinged to one end of the mounting bracket and the other end of which is hinged to the sliding assembly; a second linkage arm, one end of which is hinged to the other end of the mounting bracket and the other end of which is hinged to the vehicle body; a traction linkage arm, one end of which is hinged together with the first linkage arm to the sliding assembly and the other end of which is hinged to the middle portion of the second linkage arm; and a drive assembly mounted to the vehicle body and having a telescopic shaft, the end of which is hinged to the middle portion of the second linkage arm; wherein, when the telescopic shaft extends or retracts, the second linkage arm drives the traction linkage arm to rotate, so that the traction linkage arm drives the sliding assembly to slide along the guide rail, thereby causing the first linkage arm and the second linkage arm to jointly drive the door to swing.

[0017] The hinge assembly for swing doors of this invention enables the independent opening and closing of the rear door using only one drive device, avoiding the problem of high precision required when using two or more drive devices. This not only improves the convenience of opening and closing the door, but also reduces the difficulty and cost of design, installation and debugging, and makes it less likely to cause door lock misalignment.

[0018] The device of this invention has other features and advantages that will be apparent from or will be set forth in detail in the accompanying drawings and subsequent embodiments incorporated herein, which together serve to explain the particular principles of this invention. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the hinge assembly for a swing door according to an embodiment of the present invention.

[0020] Figure 2 This is a schematic diagram of a partial structural connection of the hinge assembly for a swing door according to an embodiment of the present invention.

[0021] Figure 3 This is a schematic diagram of another part of the structural connection of the hinge assembly for a swing door according to an embodiment of the present invention.

[0022] Figure 4 This is a schematic diagram of the sliding component and guide rail of the hinge assembly for a swing door according to an embodiment of the present invention.

[0023] Figure 5 This is a schematic diagram of the hinge assembly for a swing door in the embodiment of the present invention when the door is closed.

[0024] Figure 6 This is a schematic diagram of the hinge assembly for a swing door according to an embodiment of the present invention when the door is fully open.

[0025] Figure 7 This is a schematic diagram illustrating the action of the hinge assembly for the swing door in the opening process of the vehicle door according to the embodiment of this utility model.

[0026] Figure 8 This is a schematic diagram of the structure of a hinge assembly for a swing door, which is a second exemplary embodiment of the present invention.

[0027] Figure 9 This is a schematic diagram illustrating the movement of a hinge assembly for a swing door during the opening process, representing a second exemplary embodiment of the present invention.

[0028] Figure 10This is a structural schematic diagram of a hinge assembly for a swing door, representing a third exemplary embodiment of the present invention.

[0029] Explanation of reference numerals in the attached figures:

[0030] 100: Mounting rack

[0031] 110: Body 111: First Fastener

[0032] 120: First support; 121: Second hinge pin

[0033] 130: Second support; 131: Third hinge pin

[0034] 200: Driver Components

[0035] 210: Output shaft; 220: Rotary motor

[0036] 230: Transmission gear assembly; 240: Electric actuator.

[0037] 241: Telescopic shaft

[0038] 300: Guide rail

[0039] 310: First end; 320: Second end

[0040] 330: Base plate; 340: Inner plate

[0041] 350: Top panel; 360: Outer panel

[0042] 370: Second fastener; 380: First arc segment

[0043] 390: Second arc segment

[0044] 400: Sliding component; 410: Movable support

[0045] 411: First sliding plate; 411a: Head

[0046] 411b: Tail end; 412: Second sliding plate

[0047] 413: Mounting plate; 414: Fourth hinge pin

[0048] 420: Load-bearing wheel; 430: Idler wheel

[0049] 500: First link arm

[0050] 600: Second link arm; 610: First articulated pin

[0051] 700: Traction link arm.

[0052] It should be understood that the accompanying drawings are not necessarily drawn to scale, but rather present simplified representations of various features to illustrate the basic principles of this invention. The specific design features disclosed in this invention (including, for example, specific dimensions, orientations, positions, and shapes) will be determined in part by the specific application and environment in which they will be used.

[0053] Throughout these figures, the same reference numerals denote the same or equivalent parts of the present invention. Detailed Implementation

[0054] The present invention will now be described in detail with reference to various embodiments, examples of which are presented in the accompanying drawings and described below. Although the present invention will be described in conjunction with exemplary embodiments, it should be understood that this specification is not intended to limit the present invention to these exemplary embodiments. Rather, the present invention is intended to cover not only these exemplary embodiments, but also various alternatives, modifications, equivalents and other embodiments that may be included within the spirit of the present invention and the scope defined by the appended claims.

[0055] First, it should be noted that "front" refers to the forward direction of the vehicle, "rear" refers to the backward direction of the vehicle, "inner" refers to the side of the car door facing inwards, and "outer" refers to the side of the car door facing outwards.

[0056] For ease of description, this utility model embodiment will be described using the rear door of a vehicle as an example.

[0057] The following is combined Figures 1 to 10 The hinge assembly for a swing door according to the present invention will be described.

[0058] Figure 1 This is a schematic diagram of the overall structure of the hinge assembly for a swing door according to an embodiment of the present invention. Figure 2 This is a schematic diagram of a partial structural connection of the hinge assembly for a swing door according to an embodiment of the present invention. Figure 3 This is a schematic diagram of another part of the structural connection of the hinge assembly for a swing door according to an embodiment of the present invention. Figure 4 This is a schematic diagram of the sliding component and guide rail of the hinge assembly for a swing door according to an embodiment of the present invention.

[0059] like Figure 1 and Figure 2 As shown, the hinge assembly for a swing door according to the present invention includes: a mounting bracket 100, a drive assembly 200, a guide rail 300, a sliding assembly 400, a first link arm 500, a second link arm 600, and a traction link arm 700.

[0060] Mounting bracket 100 is mounted to the vehicle door. Drive assembly 200 is mounted to the vehicle body and has an output shaft 210. Guide rail 300 is mounted to the vehicle body, and there is a predetermined distance between guide rail 300 and output shaft 210 of drive assembly 200. Sliding assembly 400 is configured to slide along guide rail 300. One end of first linkage arm 500 is hinged to one end of mounting bracket 100, and the other end of first linkage arm 500 is hinged to sliding assembly 400. One end of second linkage arm 600 is hinged to the other end of mounting bracket 100, and the other end of second linkage arm 600 is fixedly connected to output shaft 210 of drive assembly 200. One end of traction linkage arm 700 is hinged to sliding assembly 400 together with first linkage arm 500, that is, one end of traction linkage arm 700 is coaxial with the other end of first linkage arm 500. The other end of traction linkage arm 700 is hinged to the middle of second linkage arm 600. When the output shaft 210 rotates, the second linkage arm 600 drives the traction linkage arm 700 to rotate, causing the traction linkage arm 700 to drive the sliding component 400 to slide along the guide rail 300. This allows the first linkage arm 500 and the second linkage arm 600 to work together to swing the door, thereby opening and closing the door. The middle part of the second linkage arm 600 refers to the position where the ratio of the distance from its fixed connection point to the output shaft 210 to its hinge point to the mounting bracket 100 is within the range of 0.5 to 0.7.

[0061] Specifically, in combination Figure 7 As shown, when the output shaft 210 rotates in the first rotation direction, the traction linkage arm 700 drives the sliding component 400 to slide along the guide rail 300 from the first end 310 to the second end 320 of the guide rail 300, thereby causing the first linkage arm 500 and the second linkage arm 600 to jointly drive the door to swing in the opening direction. When the output shaft 210 rotates in the second rotation direction, the traction linkage arm 700 drives the sliding component 400 to slide along the guide rail 300 from the second end 320 to the first end 310 of the guide rail 300, thereby causing the first linkage arm 500 and the second linkage arm 600 to jointly drive the door to swing in the closing direction. Here, the first rotation direction refers to... Figure 7 The direction shown in T1, the second rotation direction refers to Figure 7 The direction indicated by T2.

[0062] Preferably, the hinge assembly for the swing door of this utility model embodiment can be used for the rear door of a vehicle. That is, the mounting bracket 100 can be fixed to the rear door of the vehicle, and the drive assembly 200 and the guide rail 300 are fixed to the vehicle body corresponding to the rear door. When rear passengers need to get in or out of the vehicle, the drive assembly 200 can drive the output shaft 210 to rotate in the first rotation direction T1, thereby causing the traction linkage arm 700 to drive the sliding assembly 400 to slide along the guide rail 300 from the first end 310 (the end near the front of the vehicle) to the second end 320 (the end near the rear of the vehicle), thereby causing the first linkage arm 500 and the second linkage arm 600 to jointly drive the door to swing in the opening direction (the rearward direction of the vehicle) to open the door.

[0063] Conversely, when the door needs to be closed, the output shaft 210 can be driven to rotate in the second rotation direction T2 by the drive assembly 200, so that the traction linkage arm 700 drives the sliding assembly 400 to slide along the guide rail 300 from the second end 320 to the first end 310 of the guide rail 300, thereby causing the first linkage arm 500 and the second linkage arm 600 to jointly drive the door to swing in the closing direction (the forward direction of the vehicle) to close the door.

[0064] During the above process, the swing of the car door follows a first predetermined trajectory P1 (combined with...). Figure 7 As shown, in the first predetermined trajectory P1, the change angle α1 of the front end position of the door is small, so that the door will not be blocked by the front door during the opening process, thus avoiding interference with the front door of the vehicle. In this way, for vehicles with open doors, the rear door can be opened and closed independently, improving the convenience of opening and closing the doors.

[0065] Alternatively, the hinge assembly for a swing door according to the present invention can also be used for the front door of a vehicle. When the present invention is used for the front door of a vehicle, the first end 310 of the guide rail 300 can be set near the rear of the vehicle, and the second end 320 of the guide rail 300 can be set near the front of the vehicle. The door opens in the forward direction of the vehicle and closes in the rearward direction of the vehicle, which will not be elaborated further in this document.

[0066] Figure 2 This is a schematic diagram of a partial structural connection of the hinge assembly for a swing door according to an embodiment of the present invention. Figure 3 This is a schematic diagram of another part of the structural connection of the hinge assembly for a swing door according to an embodiment of the present invention. Figure 4 This is a schematic diagram of the sliding component and guide rail of the hinge assembly for a swing door according to an embodiment of the present invention.

[0067] According to an exemplary embodiment of the present invention, in conjunction with Figure 3 and Figure 5 As shown, the second linkage arm 600 is arc-shaped and bends away from the first linkage arm 500, that is, both ends of the second linkage arm 600 bend away from the first linkage arm 500. A first hinge pin 610 is provided in the middle of the second linkage arm 600. The traction linkage arm 700 is hinged to the second linkage arm 600 through the first hinge pin 610. The ratio of the distance from the first hinge pin 610 to the fixed connection point between the second linkage arm 600 and the output shaft 210 to the distance from the first hinge pin 610 to the hinge point between the second linkage arm 600 and the mounting bracket 100 is in the range of 0.5 to 0.7. Preferably, in this embodiment, the ratio of the distance from the first hinge pin 610 to the fixed connection point between the second linkage arm 600 and the output shaft 210 to the distance from the first hinge pin 610 to the hinge point between the second linkage arm 600 and the mounting bracket 100 is 0.6. This facilitates the adjustment and control of the first predetermined trajectory P1 of the door's swing during opening and closing, avoiding interference with the vehicle's front door. It also ensures that the traction link arm 700 is basically parallel to the vehicle body when the door is closed, making the hinge assembly more compact in the lateral direction. At the same time, it ensures that the door is basically parallel to the vehicle body when fully open, so that the opened door does not occupy too much lateral space. This increases the freedom of door hinge arrangement while reducing the risk of collision.

[0068] According to an exemplary embodiment of the present invention, in conjunction with Figure 2 and Figure 5 As shown, the mounting bracket 100 includes a body 110, a first support 120, and a second support 130. Specifically, the body 110 has a plurality of mounting holes, and the body 110 is detachably connected to the vehicle door via first fasteners 111 passing through the mounting holes. For example, the first fastener 111 can be a threaded fastener such as a bolt, or other fasteners. The first support 120 is located at one end of the body 110 and has a second hinge pin 121, and one end of the first connecting arm 500 is hinged to the first support 120 via the second hinge pin 121. The second support 130 is located at the other end of the body 110 and has a third hinge pin 131, and one end of the second connecting arm 600 is hinged to the second support 130 via the third hinge pin 131.

[0069] According to an exemplary embodiment of the present invention, in conjunction with Figure 1 and Figure 4As shown, the guide rail 300 is configured as a linear guide rail. Specifically, the guide rail 300 includes a base plate 330, an inner plate 340, a top plate 350, and an outer plate 360 ​​connected in sequence. The base plate 330 extends outward from the lower edge of the inner plate 340, the top plate 350 extends outward from the upper edge of the inner plate 340, and the outer plate 360 ​​extends downward from the outer edge of the top plate 350 but is not connected to the base plate 330, thus forming a sliding cavity with an opening, and the opening of the sliding cavity faces outward.

[0070] Furthermore, the inner panel 340 is provided with a plurality of mounting holes, and the inner panel 340 is detachably connected to the vehicle body via a second fastener 370 passing through the mounting holes. For example, the second fastener 370 can be a threaded fastener such as a bolt, or other fasteners.

[0071] According to an exemplary embodiment of the present invention, in conjunction with Figure 3 and Figure 4 As shown, the sliding assembly 400 includes a movable bracket 410, which includes a first sliding plate 411, a second sliding plate 412, and a mounting plate 413 connected in sequence.

[0072] Specifically, the second sliding plate 412 is arranged vertically. The head 411a of the first sliding plate 411 extends outward from the upper edge of the second sliding plate 412, and the tail 411b of the first sliding plate 411 extends inward from the upper edge of the second sliding plate 412 into the interior of the sliding cavity of the guide rail 300. The mounting plate 413 extends outward from the lower edge of the second sliding plate 412. The head 411a of the first sliding plate 411 is located outside the sliding cavity of the guide rail 300, and a fourth hinge pin 414 is provided between it and the mounting plate 413. One end of the traction link arm 700 is hinged together with the other end of the first link arm 500 to the fourth hinge pin 414.

[0073] Furthermore, the sliding assembly 400 also includes a load-bearing roller 420 and a guide roller 430. The load-bearing roller 420 is mounted on the inner side of the second sliding plate 412 and rests on the base plate 330 of the guide rail 300 to provide support for the movable support 410. The guide roller 430 is mounted on the upper side of the tail 411b of the first sliding plate 411 to guide the movable support 410 to slide along the guide rail 300. Preferably, in this embodiment, two guide rollers 430 are provided; alternatively, one or more guide rollers 430 may be provided.

[0074] The load-bearing roller 420 can roll on the base plate 330 of the guide rail 300, which helps to reduce friction when the movable support 410 slides along the guide rail 300. The guide roller 430 can roll inside the sliding cavity, which also helps to reduce friction when the movable support 410 slides along the guide rail 300.

[0075] According to an exemplary embodiment of the present invention, in conjunction with Figure 1 and Figure 5 As shown, the driver of the drive assembly 200 can be configured as a rotary motor 220, which is electrically connected to the vehicle's control system and drives the output shaft 210 to rotate according to the instructions of the control system. Through the cooperation of the rotary motor 220 and the transmission gear assembly 230, the second linkage arm 600 can rotate around the output shaft 210 of the drive assembly 200 in a predetermined plane of rotation, thereby controlling the door to swing along a first predetermined trajectory P1 when opening and closing the door.

[0076] According to a second exemplary embodiment of the present invention, in conjunction with Figure 8 and Figure 9 As shown, the guide rail 300 is configured as a curved guide rail and includes a first arc segment 380 and a second arc segment 390. In the first half of the door opening phase, the drive assembly 200 drives the output shaft 210 to rotate along the first rotation direction T1, thereby causing the traction linkage arm 700 to drive the sliding assembly 400 to slide from the first end 310 of the guide rail 300 along the first arc segment of the guide rail. This causes the first linkage arm 500 and the second linkage arm 600 to jointly drive the door to swing along the second predetermined trajectory P2. In the second predetermined trajectory P2, the change angle α2 of the front end position of the door is smaller than α1. In this case, when the hinge assembly of this invention is used for the rear door of a vehicle, the rear door is less likely to be blocked by the front door when opened, while allowing for a greater overlap in the front-rear direction of the joint between the front and rear doors to improve the sealing effect of the front and rear doors.

[0077] In the latter half of the door opening phase, the drive assembly 200 continues to drive the output shaft 210 to rotate in the first rotation direction T1, thereby causing the traction linkage arm 700 to drive the sliding assembly 400 to slide along the second arc segment 390 of the guide rail to the second end 320 of the guide rail 300. This causes the first linkage arm 500 and the second linkage arm 600 to jointly drive the door to swing along the third predetermined trajectory P3, so that the door is basically parallel to the vehicle body when fully open. This ensures that the opening of the door does not occupy too much lateral space, improving the convenience of passengers getting on and off the vehicle while reducing the risk of collision.

[0078] According to the third exemplary embodiment of the present invention, in conjunction with Figure 10As shown, considering the spatial layout and other issues of some vehicle models, the drive unit 200 can be configured as an electric telescopic rod 240, which is fixed to the vehicle body and has a telescopic shaft 241. In this case, the other end of the second linkage arm 600 is hinged to the vehicle body, and there is a predetermined distance between the hinge point of the second linkage arm 600 to the vehicle body and the guide rail 300. The end of the telescopic shaft 241 of the electric telescopic rod 240 is hinged to the middle of the second linkage arm 600. When rear passengers need to get on or off the vehicle, the telescopic shaft 241 can be extended towards the second linkage arm 600 via the electric telescopic rod 240. This causes the second linkage arm 600 to rotate in the first rotation direction T1, thereby causing the traction linkage arm 700 to drive the sliding component 400 to slide along the guide rail 300 from the first end 310 (the end near the front of the vehicle) to the second end 320 (the end near the rear of the vehicle). This allows the first linkage arm 500 and the second linkage arm 600 to work together to swing the door in the opening direction (the rearward direction of the vehicle) to open the door. The position where the end of the telescopic shaft 241 of the electric telescopic rod 240 is hinged to the middle of the second linkage arm 600 can be exactly the same as the position where the other end of the traction linkage arm 700 is hinged to the middle of the second linkage arm 600, or it can be different, as long as it meets the actual requirements of this utility model.

[0079] Conversely, when it is necessary to close the car door, the telescopic shaft 241 can be retracted by the electric telescopic rod 240, so as to drive the second linkage arm 600 to rotate in the second rotation direction T2. ​​This causes the traction linkage arm 700 to drive the sliding component 400 to slide along the guide rail 300 from the second end 320 to the first end 310 of the guide rail 300. This causes the first linkage arm 500 to work with the second linkage arm 600 to swing the car door in the closing direction (the forward direction of the vehicle) to close the car door.

[0080] Figure 5 This is a schematic diagram of the hinge assembly for a swing door in the embodiment of the present invention when the door is closed. Figure 6 This is a schematic diagram of the hinge assembly for a swing door according to an embodiment of the present invention when the door is fully open. Figure 7 This is a schematic diagram illustrating the action of the hinge assembly for the swing door in the opening process of the vehicle door according to the embodiment of this utility model.

[0081] The working process of the hinge assembly for a swing door according to the present invention will be described below with reference to the accompanying drawings.

[0082] Normally, the rear door of a vehicle is closed, and the hinge assembly for the swing door of this invention is in its initial state (e.g., Figure 5(As shown). At this time, the output shaft 210 has not started to rotate, the second linkage arm 600 has not driven the traction linkage arm 700 to rotate, and the sliding assembly 400 is located at the first end 310 of the guide rail 300. At this time, part of the structure of the vehicle's rear door is blocked by the front door.

[0083] When passengers in the back need to get on or off the bus, combined with Figure 7 As shown, the drive assembly 200 can be activated via a corresponding button or the vehicle's control system, causing the output shaft 210 to rotate in the first rotation direction T1. This causes the traction linkage arm 700 to drive the sliding assembly 400 to slide along the guide rail 300 from the first end 310 to the second end 320 of the guide rail 300. Consequently, the first linkage arm 500, in conjunction with the second linkage arm 600, drives the door to swing in the opening direction. When the sliding assembly 400 slides to the second end 320 of the guide rail 300, the door is fully opened.

[0084] Conversely, when the door needs to be closed, the drive assembly 200 can be activated via a corresponding button or the vehicle's control system. This causes the output shaft 210 to rotate in the second rotation direction T2, thereby causing the traction linkage arm 700 to drive the sliding assembly 400 to slide along the guide rail 300 from the second end 320 to the first end 310 of the guide rail 300. This, in turn, causes the first linkage arm 500 and the second linkage arm 600 to jointly swing the door in the closing direction. When the sliding assembly 400 slides to the first end 310 of the guide rail 300, the door returns to the closed state. The hinge assembly for the swing door of this invention returns to its initial state.

[0085] During the above process, the swing of the car door follows a first predetermined trajectory P1 (combined with...). Figure 7 (As shown), so that the car door is not blocked by the front door during opening and closing, thereby avoiding interference with the front door of the vehicle.

[0086] The hinge assembly for swing doors of this invention enables the independent opening and closing of the rear door using only one drive device, avoiding the problem of high precision required when using two or more drive devices. This not only improves the convenience of opening and closing the door, but also reduces the difficulty and cost of design, installation and debugging, and makes it less likely to cause door lock misalignment.

[0087] For ease of interpretation and precise definition of the appended claims, the terms “upper,” “lower,” “upper side,” “lower side,” “upper end,” “lower end,” “front,” “rear,” “forward,” “rear,” “forward,” “backward,” “inner,” “outer,” “inner side,” and “outer side” are used to describe features of the exemplary embodiments with reference to the positions of these features shown in the accompanying drawings.

[0088] The foregoing description of specific exemplary embodiments of the present invention is for illustrative and descriptive purposes. It is not intended to be exhaustive, nor to limit the invention to the precise forms disclosed; obviously, many changes and variations are possible in accordance with the foregoing teachings. The exemplary embodiments were chosen and described to explain the specific principles of the invention and its practical application, thereby enabling others skilled in the art to implement and utilize various exemplary embodiments of the invention, as well as their different alternatives and modifications. The scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A hinge assembly for a swing door, characterized in that, include: Mounting bracket, which is installed to the vehicle door; A drive assembly that is mounted to the vehicle body and has an output shaft; Guide rails are installed to the vehicle body; A sliding component configured to slide along the guide rail; The first linkage arm has one end hinged to one end of the mounting bracket and the other end hinged to the sliding assembly; The second linkage arm has one end hinged to the other end of the mounting bracket and the other end fixedly connected to the output shaft of the drive assembly. as well as The traction link arm has one end hinged to the sliding assembly together with the first link arm, and the other end hinged to the middle of the second link arm. When the output shaft rotates, the second linkage arm drives the traction linkage arm to rotate, so that the traction linkage arm drives the sliding component to slide along the guide rail, thereby enabling the first linkage arm and the second linkage arm to jointly drive the door to swing.

2. The hinge assembly for a swing door according to claim 1, characterized in that, When the output shaft rotates in the first rotation direction, the traction linkage arm drives the sliding assembly to slide along the guide rail from the first end of the guide rail to the second end of the guide rail, so that the first linkage arm and the second linkage arm work together to drive the door to swing in the opening direction. When the output shaft rotates in the second rotation direction, the traction linkage arm drives the sliding assembly to slide along the guide rail from the second end of the guide rail to the first end of the guide rail, thereby causing the first linkage arm and the second linkage arm to jointly drive the door to swing in the closing direction.

3. The hinge assembly for a swing door according to claim 2, characterized in that, The second link arm is configured to be arc-shaped and bends away from the first link arm; The traction link arm is hinged to the middle of the second link arm via a first hinge pin, and the ratio of the distance from the first hinge pin to the fixed connection point between the second link arm and the output shaft to the distance from the first hinge pin to the hinge point between the second link arm and the mounting bracket is in the range of 0.5 to 0.

7.

4. The hinge assembly for a swing door according to claim 2, characterized in that, The mounting bracket includes: ontology; A first support, wherein the first support is disposed at one end of the body and has a second hinge pin; and The second support is disposed at the other end of the body and has a third hinge pin; In this configuration, one end of the first link arm is hinged to the first support via a second hinge pin, and one end of the second link arm is hinged to the second support via a third hinge pin.

5. The hinge assembly for a swing door according to claim 4, characterized in that, The guide rail comprises a base plate, an inner plate, a top plate, and an outer plate connected in sequence; The bottom plate extends outward from the lower edge of the inner plate, the top plate extends outward from the upper edge of the inner plate, and the outer plate extends downward from the outer edge of the top plate but is not connected to the bottom plate, to form a sliding cavity with an opening, and the opening of the sliding cavity faces the outside of the vehicle.

6. The hinge assembly for a swing door according to claim 5, characterized in that, The sliding assembly includes a movable bracket, which includes a first sliding plate, a second sliding plate, and a mounting plate connected in sequence. The second sliding plate is arranged in the vertical direction; The head of the first sliding plate extends outward from the upper edge of the second sliding plate, and the tail of the first sliding plate extends inward from the upper edge of the second sliding plate into the sliding cavity of the guide rail. The mounting plate extends outward from the lower edge of the second sliding plate; A fourth hinge pin is provided between the head of the first sliding plate and the mounting plate, and one end of the traction link arm is hinged together with the other end of the first link arm to the fourth hinge pin.

7. The hinge assembly for a swing door according to claim 6, characterized in that, The sliding component further includes: A load-bearing roller is mounted on the inner side of the second sliding plate and rests on the base plate of the guide rail to provide support for the movable support; and A guide wheel is mounted on the upper side of the tail of the first sliding plate to guide the movable bracket to slide along the guide rail.

8. The hinge assembly for a swing door according to claim 7, characterized in that, The guide rail is a linear guide rail.

9. The hinge assembly for a swing door according to claim 7, characterized in that, The guide rail is a curved guide rail and includes a first arc segment and a second arc segment. When the sliding component slides along the first arc segment of the guide rail, the door swings along a second predetermined trajectory. As the sliding assembly slides along the second arc segment of the guide rail, the door swings along a third predetermined trajectory.

10. A hinge assembly for a swing door, characterized in that, include: Mounting bracket, which is installed to the vehicle door; Guide rails are installed to the vehicle body; A sliding component configured to slide along the guide rail; The first linkage arm has one end hinged to one end of the mounting bracket and the other end hinged to the sliding assembly; The second linkage arm has one end hinged to the other end of the mounting bracket and the other end hinged to the vehicle body; as well as The traction link arm has one end hinged to the sliding assembly together with the first link arm, and the other end hinged to the middle of the second link arm. as well as A drive assembly, which is mounted to the vehicle body and has a telescopic shaft, the end of which is hinged to the middle of a second linkage arm; When the telescopic shaft extends or retracts, the second linkage arm drives the traction linkage arm to rotate, so that the traction linkage arm drives the sliding component to slide along the guide rail, thereby enabling the first linkage arm and the second linkage arm to jointly drive the door to swing.

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