Folding hinge assembly for sliding type vehicle door
By designing a folding hinge assembly for sliding doors, using spur gears, worm gears and circular cam mechanisms, the problem of large space occupation and inflexible expansion trajectory of the existing door hinge system is solved, and the flexible opening and closing of the door is achieved. The adaptation of different models improves the compactness and reliability of the overall structure.
Patent Information
- Application Number
- CN202411084494.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-08
- Publication Date
- 2024-12-10
AI Technical Summary
The existing sliding side door hinge system has the problem of large space occupation, inability to cross the common model, and inflexible expansion trajectory.
A folding hinge assembly including door connectors, connecting arms, connecting sliders, linear guide rails and drive mechanisms is designed, and the doors are opened and closed by spur gears, worm gears and circular cam mechanisms are used to achieve flexible opening and closing, avoiding the traditional curved guide rails. Use, adapt to different models by adjusting the gear ratio and cam curve.
It realizes that the doors are flexible to unfold and close the doors without occupying the space of the vehicle body, adapts to the door movement trajectory of different models, and improves the compactness and reliability of the overall structure.
Smart Images
Figure CN119102440A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the field of sliding doors of passenger vehicles, in particular to a sliding door with automatic opening and closing functions, specifically a folding hinge assembly for the sliding door. Background Art
[0002] The sliding side-opening door used in vehicles is commonly seen in the well-known "commercial vehicles", "MPV" and other models. The sliding side-opening door (hereinafter referred to as the side-opening door) usually has a horizontal outward expansion movement while the door opens longitudinally, so that the door can be opened sideways along the outer side of the vehicle body.
[0003] However, the current side-opening door has the following defects: 1. The opening of the door hinge is constrained by the curved track, which occupies the interior space of the vehicle and reduces the installation space inside the vehicle body; 2. The design of the track corresponds to the sliding track of the vehicle body one by one, and cannot be shared across different vehicle types; 3. The lateral expansion track of the car door is limited by the shape and processing technology of the track and cannot be flexibly changed; 3. The displacement curve of the door's lateral expansion and longitudinal opening is limited and the processing technology of the curved track. Summary of the invention
[0004] The purpose of the present invention is to overcome the above-mentioned defects and to provide a folding hinge assembly for a sliding door which has a compact structure, a flexible opening and closing trajectory and can be applied to different vehicle models.
[0005] In order to achieve the above object, the present invention is achieved in the following ways: A folding hinge assembly for a sliding door, comprising a door connecting piece (301), a connecting arm (302) and a connecting slider (303), and also comprising a linear guide rail (101) and a driving mechanism, wherein the door connecting piece (301) is rotatably connected to one end of the connecting arm (302) via a pin shaft, and the other end of the connecting arm (302) is rotatably connected to the connecting slider (303) via a pin shaft, wherein the connecting slider (303) is arranged on the linear guide rail (101) and is also connected to the driving mechanism, and the driving mechanism causes the connecting arm (302) to reciprocate forward and backward along the linear guide rail (101).
[0006] The above-mentioned folding hinge assembly for a sliding door comprises a driving mechanism including a spur gear (202), the spur gear (202) being rotatably connected to a connecting slider (303), and a spur rack being arranged on the surface of the linear guide rail (101) and meshing with the spur gear (202), so that when the spur gear (202) rotates, the connecting slider (303) reciprocates along the linear guide rail (101).
[0007] The folding hinge assembly for a sliding door further comprises a cylindrical cam (205), a worm wheel (204) being arranged at the end of the cylindrical cam (205), a worm gear (203) being arranged along the axis direction of the spur gear (202), the worm gear (203) being meshed with the worm wheel (204), so that the spur gear (202) drives the cylindrical cam (205) to move, and a push rod (206) being arranged between the cylindrical cam (205) and the connecting arm (302), so that as the cylindrical cam (205) rotates, the push rod (206) pushes the connecting arm (302) outward or pulls it back.
[0008] The folding hinge assembly for a sliding door is provided with a groove on the cylindrical cam (205), wherein the groove limits the movement trajectory of the push rod (206), so that when the spur gear (202) rotates and causes the connecting slider (303) to move toward the rear of the linear guide rail (101), the cylindrical cam (205) rotates and causes the push rod (206) to push the connecting arm (302) outward; conversely, when the spur gear (202) rotates and causes the connecting slider (303) to move toward the front of the linear guide rail (101), the cylindrical cam (205) rotates and causes the push rod (206) to pull the connecting arm (302) back inward.
[0009] In the folding hinge assembly for a sliding door, a rotational connection is achieved between the connecting arm (302) and the connecting base (301) and between the connecting arm (302) and the connecting slider (303) by inserting a pin shaft, and the end of the pin shaft is a spherical joint.
[0010] The folding hinge assembly for a sliding door proposed by the present invention has the following advantages compared with the conventional hinge assembly: 1. Without using curved guide rails, the door can be opened outwards at the same time, thereby freeing up space at the bottom of the vehicle body for installing batteries or other parts, reducing the space occupied by the vehicle frame; 2. The longitudinal opening of the door is converted into vertical movement through the gear rack, which is decelerated by the worm gear and then transmitted to the circular cam to be converted into lateral displacement, driving the connecting rod to open, hold or close, thereby realizing the required lateral and longitudinal opening and closing trajectory of the door; 3. The mechanism of gear rack, worm gear and circular cam is used in the vehicle sliding door hinge system to realize the opening, holding and closing of the connecting rod hinge. The overall structure is compact and reliable; 4. The transmission ratio can be adjusted as needed to freely design and realize the longitudinal inflection point when the longitudinal and lateral expansion remain unchanged; 5. The maximum horizontal expansion position can be freely designed and achieved by adjusting the lift of the circular cam as needed; 6. By adjusting the curve of the circular cam as needed, the curve trajectory of longitudinal opening and lateral expansion can be freely designed and realized; Through the above advantages, the hinge assembly proposed by the present invention can freely realize horizontal and vertical opening and closing, that is, the movement trajectory of the door, to adapt to different vehicle body environments; Furthermore, under the premise of satisfying the above functions, it is ensured that most parts can be used on different vehicles, which can be achieved by simply adjusting the trajectory of the circular cam. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 It is a schematic diagram of the structure of the folding hinge assembly in the present invention.
[0012] Figure 2 It is a schematic diagram of the operation of the folding hinge assembly in the present invention when viewed from above. DETAILED DESCRIPTION
[0013] The present invention is further described below by means of specific examples.
[0014] like Figure 1 , Figure 2 A folding hinge assembly for a sliding door is shown, comprising a door connector (301), a connecting arm (302) and a connecting slider (303), and also comprising a linear guide rail (101) and a driving mechanism; a rotational connection is achieved between the connecting arm (302) and the connecting base (301) and between the connecting arm (302) and the connecting slider (303) by inserting a pin shaft, and the end of the pin shaft is a spherical joint.
[0015] In the above-mentioned component, the driving mechanism comprises a spur gear (202), the spur gear (202) is rotatably connected to the connecting slider (303), and a spur rack is arranged on the surface of the linear guide rail (101) and meshes with the spur gear (202). In this way, the linear guide rail is arranged horizontally, and when the spur gear (202) rotates, the connecting slider (303) reciprocates along the linear guide rail (101).
[0016] Furthermore, the invention also comprises a cylindrical cam (205), a worm gear (204) is arranged at the end of the cylindrical cam (205), a worm (203) is arranged on the spur gear (202) along the axis direction, the worm gear (203) is meshed with the worm gear (204), so that the spur gear (202) drives the cylindrical cam (205) to move, and a push rod (206) is arranged between the cylindrical cam (205) and the connecting arm (302), so that as the cylindrical cam (205) rotates, the push rod (206) pushes the connecting arm (302) outward or pulls it back in the horizontal direction.
[0017] In this way, in the folding hinge assembly for a sliding door in this embodiment, a groove is provided on the cylindrical cam (205), and the groove limits the movement trajectory of the push rod (206).
[0018] Thus, when the folding hinge assembly for a sliding door in this embodiment is put into use, when the door is manually opened and a push-pull action is performed, the spur gear (202) rotates and causes the connecting slider (303) to move toward the rear of the linear guide rail (101), and the cylindrical cam (205) rotates and causes the push rod (206) to push the connecting arm (302) outward in a horizontal direction; conversely, when the spur gear (202) rotates and causes the connecting slider (303) to move toward the front of the linear guide rail (101), the cylindrical cam (205) rotates and causes the push rod (206) to pull the connecting arm (302) back inward in a horizontal direction.
[0019] Through the above process, without using the curved guide rail required for the traditional side-opening door, the door can be opened outwards at the same time. Therefore, after the folding hinge assembly in this embodiment is put into use, the door is installed on the connecting arm, so that space can be freed up at the bottom of the vehicle body for the installation of batteries or other components, thereby reducing the space occupied by the vehicle frame.
[0020] Furthermore, a mechanism of a gear rack, a worm gear, and a circular cam is used on the hinge system of the vehicle sliding door to realize the opening, holding, and closing of the connecting rod hinge, and the overall structure is compact and reliable; at the same time, the longitudinal inflection point when the longitudinal and lateral expansion are maintained unchanged can be freely designed and realized by adjusting the transmission ratio as needed; Since it is not necessary to set a rigid curved guide rail according to the vehicle model layout, the hinge assembly in this embodiment can freely realize horizontal and vertical opening and closing, that is, the movement trajectory of the door, to adapt to different vehicle body environments.
Claims
1. A folding hinge assembly for a sliding door, comprising a door connecting member (301), a connecting arm (302) and a connecting slider (303), wherein: The vehicle door connecting member (301) is rotatably connected to one end of a connecting arm (302) via a pin shaft, and the other end of the connecting arm (302) is rotatably connected to a connecting slider (303) via a pin shaft. The connecting slider (303) is arranged on the linear guide rail (101) and is also connected to the driving mechanism. The driving mechanism causes the connecting arm (302) to reciprocate forward and backward along the linear guide rail (101).
2. The folding hinge assembly for a sliding door according to claim 1, characterized in that: The driving mechanism comprises a spur gear (202), the spur gear (202) being rotatably connected to a connecting slider (303), and a spur rack being arranged on the surface of the linear guide rail (101) and meshing with the spur gear (202), so that when the spur gear (202) rotates, the connecting slider (303) reciprocates along the linear guide rail (101).
3. The folding hinge assembly for a sliding door according to claim 1 or 2, characterized in that: It also includes a cylindrical cam (205), a worm wheel (204) is arranged at the end of the cylindrical cam (205), and a worm (203) is arranged on the spur gear (202) along the axis direction, and the spur gear (202) drives the cylindrical cam (205) to move through the meshing of the worm (203) and the worm wheel (204), and a push rod (206) is arranged between the cylindrical cam (205) and the connecting arm (302), so that as the cylindrical cam (205) rotates, the push rod (206) pushes the connecting arm (302) outward or pulls it back.
4. The folding hinge assembly for a sliding door according to claim 3, characterized in that: A groove is provided on the cylindrical cam (205), and the groove limits the movement trajectory of the push rod (206), so that when the spur gear (202) rotates and causes the connecting slider (303) to move toward the rear of the linear guide rail (101), the cylindrical cam (205) rotates and causes the push rod (206) to push the connecting arm (302) outward; conversely, when the spur gear (202) rotates and causes the connecting slider (303) to move toward the front of the linear guide rail (101), the cylindrical cam (205) rotates and causes the push rod (206) to pull the connecting arm (302) back inward.
5. The folding hinge assembly for a sliding door according to claim 1 or 4, characterized in that: The connecting arm (302) and the connecting base (301) as well as the connecting arm (302) and the connecting slider (303) are rotatably connected by inserting a pin shaft, and the end of the pin shaft is a spherical joint.