Door hinge

Abstract

The present application relates to a kind of car door hinges, comprising: first support, with body fixed connection;Motor, including motor shaft and being installed on first support;Frame;Driving gear, connected to the motor shaft of motor and rotatably mounted to frame;Driving gear is formed with push block, push block can promote frame rotation;Driven gear, rotatably mounted to frame, one side of driven gear is engaged with driving gear;Second support, with rear door fixed connection, second support includes circular slot and support tooth, pin shaft passes through circular slot and frame and circular slot and frame are rotatably connected together, support tooth is engaged with the other side of driven gear;When rear door opens, motor drives driving gear rotation, driving gear first moves second support to the direction of car in by driven gear, so that rear door moves to the direction of car in, then the push block of driving gear is engaged with frame and promotes frame rotation, to drive second frame and rear door rotation to outside.

Description

Technical Field

[0001] This invention relates to a car door hinge. Background Technology

[0002] To ensure the front doors can open normally after a side impact, a non-blocking structure is typically used at the B-pillar of both the front and rear doors. See also Figure 11a and Figure 11b Because there is no locking mechanism, in current vehicle models, to open the rear door, the front door must first be opened, allowing the rear of the rear door to open a certain distance to bypass the front door's structure, and then the rear door must be rotated to open. This operation severely affects passengers' use of the doors.

[0003] To address this issue, existing technology proposes a gooseneck hinge structure, in which the rear door moves diagonally and then rotates to open. However, to allow for diagonal movement while simultaneously reserving space for the gooseneck hinge, the vehicle body structure requires a considerable amount of space. Additionally, door hinges employing a four-bar linkage structure have been developed, which ensures a smaller hinge structure for the rear door when closed. However, due to the motion characteristics of the four-bar structure, it places higher demands on the vehicle body and door fixing points; when the outer panel and vehicle platform conditions do not permit, there may even be situations where this hinge structure cannot be implemented.

[0004] Therefore, the existing technical problem with vehicle rear doors is how to provide a door hinge that allows the rear door to open independently.

[0005] The information disclosed in the background section of this invention is intended only to enhance the understanding of the overall background of the invention 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. Summary of the Invention

[0006] To address the problems existing in the prior art, the present invention provides a door hinge that allows the rear door to open independently, thereby improving the convenience of using the door.

[0007] The door hinge of this invention has low space requirements in the Y direction of the vehicle body structure, ensuring the universality of the patented structure and reducing the requirements for the skin and vehicle platform.

[0008] To address the aforementioned technical problems, the present invention provides a vehicle door hinge, comprising: a first bracket fixedly connected to a vehicle body; a motor including a motor shaft and mounted on the first bracket; a frame; a drive gear connected to the motor shaft of the motor and rotatably mounted on the frame; the drive gear having a push block capable of driving the frame to rotate; a driven gear rotatably mounted on the frame, one side of the driven gear meshing with the drive gear; and a second bracket fixedly connected to a rear door, the second bracket including an arcuate groove and bracket teeth, a pin passing through the arcuate groove and the frame to rotatably connect the arcuate groove and the frame, the bracket teeth meshing with the other side of the driven gear; wherein, when the rear door is opened, the motor drives the drive gear to rotate, the drive gear first moves the second bracket inwards through the driven gear, thereby moving the rear door inwards, then the push block of the drive gear engages with the frame and pushes the frame to rotate, thereby driving the second bracket and the rear door to rotate outwards.

[0009] Preferably, the frame includes an upper frame and a lower frame, with a gap between the upper frame and the lower frame, and a driving gear and a driven gear are installed in the gap.

[0010] Preferably, the upper frame and the lower frame are connected together at their ends by bolts.

[0011] Preferably, the upper frame and the lower frame are formed by bending a single sheet of material.

[0012] Preferably, the pusher is formed by protruding upwards or downwards from the upper or lower surface of the drive gear.

[0013] Preferably, the pusher is fixedly connected to the drive gear by welding.

[0014] Preferably, the radius of the arc groove is the distance from the motor shaft to the arc groove.

[0015] Preferably, the length of the arc groove is equal to or greater than the distance the pin rotates when the push block rotates from one end of the push block to the other end of the push block when it comes into contact with the frame.

[0016] Preferably, the first bracket includes a vertical plate and a horizontal plate, the vertical plate being fixedly connected to the vehicle body by screws, and the horizontal plate having a motor shaft hole.

[0017] Preferably, the second bracket includes a vertical plate and a horizontal plate. The vertical plate is fixedly connected to the rear door by screws, and the horizontal plate has an arc groove and bracket teeth.

[0018] The door hinge according to the technical solution of the present invention has the following beneficial effects:

[0019] (1) The structure of the present invention provides a more convenient method for opening the rear door of a bus. The present invention not only realizes the types of opening methods for the rear door of a bus, but also realizes the independent opening of the front door and the rear door without any obstruction structure between them, effectively improving the user experience of the bus door.

[0020] (2) The vehicle body structure of the present invention has lower requirements for space and factory.

[0021] Because the door hinge of this invention has a smaller dimension in the Y direction, it requires less space in the vehicle body structure, thus making it more advantageous for vehicle body styling design. Furthermore, since it uses a traditional bolt fixing method, the door installation method in traditional factories remains unchanged, and the difficulty of changing the factory installation process is relatively low. Attached Figure Description

[0022] Figure 1 This is a general schematic diagram of a door hinge according to an embodiment of the present invention.

[0023] Figure 2 This is an exploded view of a door hinge according to an embodiment of the present invention.

[0024] Figure 3 It is along Figure 1 A sectional view taken along line AA.

[0025] Figure 4 It is along Figure 1 A sectional view taken along line BB in the diagram.

[0026] Figure 5 It is along Figure 1 A sectional view taken along the CC line.

[0027] Figure 6 This is a schematic diagram showing the operating state of a door hinge according to an embodiment of the present invention.

[0028] Figure 7a and Figure 7b This is a schematic diagram showing the movement of the frame relative to the second support during the operation of the door hinge.

[0029] Figure 8a and Figure 8b This is a schematic diagram showing the opening process of a rear door using the door hinge of the present invention.

[0030] Figure 9 This is a schematic diagram of the running trajectory of the rear door using the door hinge of the present invention and the door hinge in the prior art.

[0031] Figure 10 This is a schematic diagram of the installation position of the door hinge in a vehicle according to an embodiment of the present invention.

[0032] Figure 11a and Figure 11b This diagram illustrates a scenario in the prior art where a rear door collides with a front door when it is opened.

[0033] Explanation of reference numerals in the attached figures:

[0034] 1: Electric motor;

[0035] 11: Motor shaft;

[0036] 12: Nut;

[0037] 2: First support;

[0038] 21: Vertical board;

[0039] 22: Horizontal plate;

[0040] 23: Motor shaft hole;

[0041] 3: Drive gear;

[0042] 31: Push block;

[0043] 32: Push block groove;

[0044] 33: Gasket;

[0045] 4: Rack;

[0046] 41, 42, 43, 44: Pin holes;

[0047] 45: Pin;

[0048] 46: Pin sleeve;

[0049] 47: Bolt;

[0050] 48: Nut;

[0051] 5: Driven gear;

[0052] 51: Driven gear pin;

[0053] 52: Pin sleeve;

[0054] 6: Second support;

[0055] 61: Vertical board

[0056] 62: Horizontal plate

[0057] 63: Circular groove;

[0058] 64: Support teeth;

[0059] B: Screw.

[0060] Unless otherwise stated, the same reference numerals or symbols denote the same elements in the accompanying drawings.

[0061] 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 principles of the invention. Specific design features disclosed in this invention (including, for example, specific dimensions, orientations, positions, and shapes) will be determined in part by the specific environment in which they will be applied and used.

[0062] Throughout these figures, the same reference numerals denote the same or equivalent parts of the invention. Detailed Implementation

[0063] Reference will now be made in detail to various embodiments of the invention, examples of which are presented in the accompanying drawings and described below. Although the invention will be described in conjunction with exemplary embodiments, it should be understood that this specification is not intended to limit the invention to these exemplary embodiments. Rather, the 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 invention and the scope defined by the appended claims.

[0064] The following is based on Figure 1-10 A detailed description of the door hinge according to an embodiment of this application will be provided. In this application, the X direction refers to the vehicle length direction, and the Y direction refers to the vehicle width direction.

[0065] Figure 1 This is a general schematic diagram of a door hinge according to an embodiment of the present invention. Figure 2 This is an exploded view of a door hinge according to an embodiment of the present invention. See also... Figure 1 and Figure 2 According to the embodiments of this application, the door hinge includes a motor 1, a first bracket 2, a drive gear 3, a frame 4, a driven gear 5, and a second bracket 6, wherein the first bracket 2 is fixedly connected to the vehicle body, and the second bracket 6 is fixedly connected to the rear door.

[0066] The first bracket 2 is an L-shaped metal bracket, including a vertical plate 21 and a horizontal plate 22. The vertical plate 21 is fixedly connected to the vehicle body by screws, and the horizontal plate 22 has a motor shaft hole 23.

[0067] The motor 1 is mounted below the horizontal plate 22. The motor shaft 11 of the motor 1 passes through the motor shaft hole 23 in the horizontal plate 22. Figure 2 As shown, the motor 1 is fixed to the first bracket 2 by four screws B.

[0068] See Figure 2The frame 4 is composed of an upper frame and a lower frame. The upper and lower frames are strip-shaped plates, with their ends connected to each other. In this embodiment, the upper and lower frames are connected together by screwing bolts 47 into nuts 48. In another example, the upper and lower frames are formed as one unit by welding one end of the upper and lower frames together.

[0069] The upper frame and the lower frame are respectively formed with pin holes 41, 42, 43 and 44.

[0070] A gap is formed between the upper and lower frames of the frame 4, and the driving gear 3 and the driven gear 5 are installed in this gap. Pin holes 41 and 42 are formed on the upper and lower frames of the frame 4, respectively. Alternatively, the frame 4 of the present invention may also be provided with only one upper support, and the driving gear 3 and the driven gear 5 are installed above the upper support.

[0071] Figure 3 It is along Figure 1 A sectional view taken along line AA. See also Figure 1 , Figure 2 and Figure 3 The motor shaft 11 of the motor 1 passes through the motor shaft hole 23 of the horizontal plate 22, the shaft hole of the drive gear 3, and the pin hole 41 of the frame 4. A keyway is formed on the motor shaft 11, and a key is placed in the keyway. The key mates with the drive gear 3, allowing the drive gear 3 to rotate together with the motor shaft 11. The end of the motor shaft 11 is threaded, and the motor 1, the first bracket 2, the drive gear 3, and the frame 4 are connected together by tightening the nut 12 onto the thread.

[0072] The driving gear 3 has a pusher groove 32 and a pusher 31 mounted on the pusher groove 32. In one example, the pusher 31 is mounted on the upper surface of the driving gear 3, but the pusher 31 can also be mounted on the lower surface of the driving gear 3. As an example, the pusher 31 is fixed to an irregular hole by welding. Therefore, when the driving gear 3 rotates, the pusher 31 also rotates. When the pusher 31 contacts the frame 4, the pusher 31 can push the frame 4 to rotate together with the driving gear 3. Alternatively, the pusher and the driven gear can be forged into a single part.

[0073] Figure 4 It is along Figure 1 A sectional view taken along line BB. See also Figure 1 , Figure 2 and Figure 4 The driven gear 5 is arranged in the intervals of the frame 4 and is rotatably mounted on the frame 4 by a driven gear pin 51 installed into the pin hole 42. A pin sleeve 52 can be provided between the driven gear pin 51 and the shaft hole of the driven gear 5. One side of the driven gear 5 meshes with the driving gear 3.

[0074] See Figure 1 and Figure 2 The second bracket 6 is an L-shaped metal bracket, including a vertical plate 61 and a horizontal plate 62. The vertical plate 61 is fixed to the rear door with screws, and the horizontal plate 62 is inserted into the gap of the frame 4. An arc groove 63 is formed in the middle of the horizontal plate 62, and the radius of the arc groove 63 is the distance from the motor shaft 11 to the arc groove 63. Preferably, the length of the arc groove 63 is equal to or greater than the distance the pin 45 rotates when the push block 31 rotates from contact with the frame 4 at one end to contact with the frame 4 at the other end.

[0075] Figure 5 It is along Figure 1 A sectional view taken along the CC line. See also Figure 5 The pin 45 passes through the pin hole 43 and the arc groove 63 of the frame 4 to rotatably mount the second bracket 6 onto the bracket 4. In one example, a pin sleeve 46 is provided on the outside of the pin 45.

[0076] The side of the horizontal plate 62 has a support tooth 64, which meshes with the other side of the driven gear 5, so that the rotation of the driving gear 3 is transmitted to the second support 6 through the driven gear 5.

[0077] Figure 10 This is a schematic diagram illustrating the installation position of a door hinge in a vehicle according to an embodiment of the present invention. See also... Figure 10 According to the technical solution of the present invention, the door hinge is installed between the vehicle body and the rear door, wherein the vertical plate 21 of the first bracket 2 is installed to the vehicle body by screws, and the vertical plate 61 of the second bracket 6 is installed to the rear door by screws.

[0078] Although the technical solution of the present invention is described with respect to the rear door of a vehicle, the door hinge of the present invention is not limited to the rear door of a vehicle, but can also be applied to other places, such as the front door of a vehicle, or other structures where two doors interfere with each other.

[0079] The operation process of the door hinge according to the present invention is described below.

[0080] Figure 6 This is a schematic diagram showing the operating state of a door hinge according to an embodiment of the present invention. See appendix. Figure 6 When the rear door is closed, pin 45 contacts one end (the inner end) of the arc groove on the second bracket 6, and the left end of push block 31 is close to frame 4. When the rear door is opened, motor shaft 11 rotates clockwise, drive gear 3 and push block 31 also rotate clockwise, and drive driven gear 5 to rotate counterclockwise. Driven gear 5 causes the second bracket 6 to move downward (i.e., towards the inside of the vehicle) through bracket teeth 64. That is, the rear door opens from... Figure 6The upper part of the middle part is moved down to the lower part, or Figure 7a Move the middle position to Figure 7b The location.

[0081] As the drive gear 3 rotates, the right side of the push block 31 contacts the frame 4. At this time, the pin 45 also moves to the other end of the arc groove 63 of the second bracket 6. (See also...) Figure 6 The circled section on the right. In this case, as the motor shaft 11 rotates, the bracket 4 begins to rotate clockwise around the motor shaft 11 under the push of the push block 31. Because the second bracket 6 and the driven gear 5 are both connected to the bracket 4, the second bracket 6 and the driven gear 5 also rotate together with the bracket 4 around the motor shaft 11, causing the rear door to open.

[0082] When the rear door rotates to a certain angle, the motor stops rotating, and the rear door is now fully open.

[0083] When the rear door closes, motor 1 rotates counterclockwise, and drive gear 3 and push block 31 also rotate counterclockwise. Driven gear 5 rotates clockwise, pushing the second bracket 6 to move. At this time, push block 31 contacts frame 4. Driven by push block 31, frame 4 begins to rotate counterclockwise. Because the second bracket 6 and driven gear 5 are connected to frame 4, the second bracket 6, driven gear 5, and rear door will also rotate counterclockwise together with frame 4 until the rear door is closed.

[0084] Figure 8a and Figure 8b This is a schematic diagram illustrating the opening process of a rear door using a door hinge employing the present invention. See also... Figure 8a and Figure 8b In this invention, during the opening of the rear door, the second bracket 6 is first moved inwards by the clockwise rotation of the drive gear 3 (i.e., Figure 9 (In the downward direction), simultaneously moving the rear door inwards. That is, from... Figure 8a The position indicated by the dotted line moves to the position indicated by the solid line, thus creating a distance between the rear door and the front door. At this time, the push block 31 of the drive gear 3 moves from the left to the right, but does not push the frame 4 to rotate. As the drive gear 3 continues to rotate, the right side of the push block 31 contacts the frame 4 and pushes the frame 4 to rotate around the motor shaft 11. At the same time, the frame 4 drives the driven gear 5, the second bracket 6, and the rear door to rotate together in the outward direction, causing the rear door to open. Because a distance is created between the rear door and the front door when the rear door opens, it prevents the rear door from colliding with the front door.

[0085] Figure 9 This is a schematic diagram illustrating the operating trajectory of a rear door using the door hinge of this invention compared to that of a door hinge in the prior art. The following is a description of... Figure 9Let me explain the comparison between the present invention and the prior art.

[0086] Since the rear door panel end at the B-pillar of the vehicle is far from the rear door hinge, the small-angle rotation of the rear door along the arc groove 63 can be regarded as linear motion.

[0087] like Figure 9 As shown, when the rear door moves a distance A in the Y direction, the distance between the front and rear doors can be increased by A×sinα in the direction of movement. This increased distance is greater than or equal to the overlap distance between the front and rear doors in the direction of movement, thereby avoiding a collision between the front and rear door panels.

[0088] Furthermore, when the rear door is closed, it comes into contact with the weatherstripping. The weatherstripping was designed with room for continued compression (over-closing), so the metal panel at the rear door can still move in the Y direction.

[0089] The door hinge according to the technical solution of the present invention provides a more convenient method for opening the rear door of a bus. The present invention enables the independent opening of the front and rear doors without any obstruction structure between them, effectively improving the usability of the bus doors.

[0090] Because the door hinge of this invention has a smaller dimension in the Y direction, it requires less space in the vehicle body structure, thus making it more advantageous for vehicle body styling design. Furthermore, since it uses a traditional bolt fixing method, the door installation method in traditional factories remains unchanged, and the difficulty of changing the factory installation process is relatively low.

[0091] The foregoing description of specific exemplary embodiments of the invention is for illustrative and descriptive purposes. It is not intended to be exhaustive, nor to limit the invention to the precise forms disclosed; clearly, 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 car door hinge, characterized in that, include: The first bracket is fixedly connected to the vehicle body; An electric motor, which includes an electric motor shaft and is mounted on a first bracket; frame; A drive gear is connected to the motor shaft of an electric motor and rotatably mounted on a frame; the drive gear is formed with a pusher block that can drive the frame to rotate; Driven gear, which is rotatably mounted on the frame, with one side of the driven gear meshing with the driving gear; The second bracket is fixedly connected to the rear door. The second bracket includes an arc groove and bracket teeth. A pin passes through the arc groove and the frame to rotatably connect the arc groove and the frame together. The bracket teeth mesh with the other side of the driven gear. When the rear door is opened, the motor drives the drive gear to rotate. The drive gear first moves the second bracket towards the inside of the vehicle through the driven gear, thereby moving the rear door towards the inside of the vehicle. Then, the push block of the drive gear engages with the frame and pushes the frame to rotate, thereby driving the second frame and the rear door to rotate outward.

2. The door hinge according to claim 1, characterized in that: The frame includes an upper frame and a lower frame, with a gap between the upper frame and the lower frame, and a driving gear and a driven gear are installed in the gap.

3. The door hinge according to claim 2, characterized in that: The upper frame and the lower frame are connected together at their ends by bolts.

4. The door hinge according to claim 2, characterized in that: The upper and lower frames are formed by bending a single sheet of material.

5. The door hinge according to claim 1, characterized in that: The pusher block is formed by protruding upwards or downwards from the upper or lower surface of the drive gear.

6. The door hinge according to claim 5, characterized in that: The pusher block is fixedly connected to the drive gear by welding.

7. The door hinge according to claim 1, characterized in that: The radius of the arc groove is the distance from the motor shaft to the arc groove.

8. The door hinge according to claim 7, characterized in that: The length of the arc groove is equal to or greater than the distance the pin rotates when the push block rotates from one end of the push block to the other end of the push block when it comes into contact with the frame.

9. The door hinge according to claim 1, characterized in that: The first bracket includes a vertical plate and a horizontal plate. The vertical plate is fixedly connected to the vehicle body by screws, and the horizontal plate has a motor shaft hole.

10. The door hinge according to claim 1, characterized in that: The second bracket includes a vertical plate and a horizontal plate. The vertical plate is fixedly connected to the rear door by screws, and the horizontal plate has an arc groove and bracket teeth.

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