Vehicle door hinge with stepless limiting function

Abstract

The invention discloses a car door hinge with a limitless limiting function, and relates to the technical field of car accessories, the car door hinge comprises a car body fixing base, mounting holes are formed in the upper end and the lower end of the car body fixing base, wear-resistant parts are arranged in the mounting holes, and a car door fixing base is mounted on the wear-resistant parts; a limiting mechanism capable of achieving limitless limiting is arranged on the vehicle body fixing base, the vehicle door limiter and the vehicle door hinge are integrated, the whole structure is arranged outside a vehicle door, the interior of the vehicle door does not need to be disassembled during maintenance, and the problem that other parts of the vehicle door are damaged is avoided; lubricating and muting effects can be actively exerted, the service life of the limiter is prolonged, and the use experience of the vehicle door is further improved.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile accessories, and in particular to a door hinge with an unlimited position function. Background Art

[0002] With the continuous development of society and the significant improvement in people's living standards, cars have gradually become commonplace in ordinary families, moving from being a luxury item for the few. This shift has led to a significant increase in car ownership and, consequently, in vehicle usage. During daily commutes, people frequently open and close their car doors, whether getting in and out, loading and unloading items, or engaging in other vehicle-related activities. Therefore, the performance and reliability of door-related components are crucial to ensuring the proper operation of the vehicle, enhancing the user experience, and ensuring passenger safety. Door hinges, as key components of the door mechanism, are fundamental to the door's opening and closing motion. However, traditional door hinges have significant design deficiencies, lacking active limit stops. This means that the door lacks a precise restraint mechanism during opening and closing, allowing it to open and close freely to its maximum angle. In real-world scenarios, this unconstrained opening and closing method can easily lead to a series of problems. For example, when a car door is opened and closed excessively, it may collide with surrounding objects, causing damage to the door itself or surrounding objects, increasing repair costs; at the same time, inappropriate opening and closing angles will also affect the convenience of use. For example, if the car door opens and closes at too large an angle, it may take up too much space, making it difficult to park or get on and off the vehicle in narrow areas, and even posing a potential threat to personal safety.

[0003] The existing patent announcement number is CN116791986A, which is a car door limiter, including a limit box, which is fixed on the car door, and two limit blocks are movably provided in the limit box, and an induction coil is provided in the limit block, and the magnetic fields generated by the two induction coils are in opposite directions; a limit arm, one end of the limit arm is hinged to the mounting bracket of the car body, and the other end passes through the horizontal through hole of the limit box and the limit hole of the car door in sequence, and the two limit blocks can clamp the limit arm; a sensor, the sensor is provided on the limit block, and can monitor the position information between the limit arm and the limit box; a control part, which is used to receive sensor information and control the current in the induction coil. Through inductive electromagnetic control, the door opening position has a wide range of optional options, and the door limit angle gear can be adjusted within the opening limit range, thereby improving the quality and safety of the door opening limit.

[0004] While this device, while addressing the issue of traditional door checkers failing to lock and clamp, has significant drawbacks, it also presents significant drawbacks. Its overall structure is complex, involving numerous precision components and a complex control system. This not only increases manufacturing costs, resulting in a relatively high price and hindering widespread adoption, but also presents significant difficulties in repair and maintenance. Failure of the device requires specialized technicians and specialized repair tools, resulting in a tedious and lengthy repair cycle, further increasing user costs and inconvenience. Summary of the Invention

[0005] The purpose of the present invention is to provide a door hinge with an unlimited limit function to solve the problems of the existing device having a complex structure, high manufacturing cost, being unfavorable for large-scale promotion and application, and having a cumbersome maintenance process and a long cycle, which increases the user's cost and inconvenience.

[0006] A door hinge with an unlimited position function includes a vehicle body fixing base, wherein the upper and lower ends of the vehicle body fixing base are provided with mounting holes, wear-resistant parts are provided in the mounting holes, the vehicle door fixing base is mounted on the wear-resistant parts, and the vehicle body fixing base is provided with a limiting mechanism that can achieve unlimited position.

[0007] Preferably, the limiting mechanism includes a rotating shaft installed in a mounting hole on a fixed base of the vehicle body, a piston is connected to the rotating shaft, a rotating shaft housing is provided on the outer periphery of the rotating shaft, a pipe is connected to the rotating shaft housing, a steering gear is provided on the pipe, and the rotating shaft housing is provided with housing end covers at the upper and lower ends.

[0008] Preferably, the surface of the rotating shaft has an external thread, the center of the piston is tubular and has an internal thread, and the piston is connected to the rotating shaft through a screw pair.

[0009] Preferably, the center of the housing end cover contains a sealing ring.

[0010] Preferably, hydraulic oil is contained in the closed spaces at the upper and lower ends of the interior formed by the rotating shaft housing, the rotating shaft and the housing end cover surrounding the piston.

[0011] Preferably, fixing screws are installed in the through holes at the upper and lower ends of the vehicle door fixing base.

[0012] Preferably, the vehicle body fixing base is connected to the vehicle body via nuts.

[0013] The advantages of the present invention are as follows: a door hinge with an unlimited position function is provided in the present invention. By integrating the door stopper with the door hinge, the entire structure is located outside the door. During maintenance, the door does not need to be disassembled, thereby avoiding problems such as damage to other door parts. In addition, a certain amount of hydraulic oil is contained in the shaft housing, which can actively play a lubricating and silent role, extend the service life of the stopper, and further improve the door user experience. A door sensing device transmits a signal to the control circuit, which controls the unblocking and closing of the pipeline connected to the steering gear, thereby controlling whether the shaft and the piston can rotate with each other in the form of a spiral pair, thereby limiting the rotation of the door when it is rotated to any desired position. At the same time, the limit position of the cooperation between the shaft and the piston is the maximum position of the door rotation angle. The shaft, piston, shaft housing, hydraulic oil and other components form relatively closed areas at the upper and lower ends. When the steering gear drives the valve core in the circulation pipeline to be in a closed state, the hydraulic oil at the upper and lower ends of the shaft housing cannot circulate and cannot be compressed, thereby stably limiting the rotation of the door, significantly improving the practicality, reliability and maintenance efficiency of the door hinge and door stopper. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional structural schematic diagram of the present invention.

[0015] Figure 2 It is an exploded view of the structural components of the present invention.

[0016] Figure 3 It is a cross-sectional view of the present invention.

[0017] Among them, 1. Car body fixing base; 2. Wear-resistant parts; 3. Door fixing base; 4. Rotating shaft; 5. Piston; 6. Rotating shaft housing; 7. Pipeline; 8. Servo; 9. Housing end cover; 10. Fixing screws. DETAILED DESCRIPTION

[0018] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0019] like Figures 1 to 3 As shown, a door hinge with an unlimited position function includes a vehicle body fixing base 1, wherein the upper and lower ends of the vehicle body fixing base 1 are provided with mounting holes, a wear-resistant part 2 is provided in the mounting hole, a vehicle door fixing base 3 is installed on the wear-resistant part 2, and the vehicle body fixing base 1 is provided with a limiting mechanism that can have an unlimited position.

[0020] In this embodiment, the limiting mechanism includes a rotating shaft 4 installed in a mounting hole on a vehicle body fixed base 1, a piston 5 is connected to the rotating shaft 4, the surface of the rotating shaft 4 contains an external thread, the center of the piston 5 is tubular and contains an internal thread, the piston 5 is connected to the rotating shaft 4 through a spiral pair, a rotating shaft housing 6 is provided on the outer periphery of the rotating shaft 4, a pipe 7 is connected to the rotating shaft housing 6, a steering gear 8 is provided on the pipe 7, the rotating shaft housing 6 is installed with housing end covers 9 at the upper and lower ends, and the internal closed space at the upper and lower ends formed by the rotating shaft housing 6, the rotating shaft 4 and the housing end covers 9 around the piston 5 contains hydraulic oil.

[0021] When a person touches the pressure sensor sensing device located on the inside armrest or outside door handle of the vehicle, the control circuit drives the servo 8 to rotate forward by a certain angle, keeping the pipe 7 in a normally open state. When the vehicle door is turned, the shaft 4 drives the piston 5 along its axial direction through the spiral pair, and the hydraulic oil at both ends of the shaft housing 6 flows from the high pressure end to the low pressure end through the pipe 7. At this time, the vehicle door can be rotated to any angle position within the allowable range of the rotation angle. The limit position of the cooperation between the shaft 4 and the piston 5 is the maximum position allowed for the vehicle door rotation angle. When the person leaves the pressure sensor sensing device, the control circuit drives the servo 8 (integrated valve core) to rotate in the opposite direction by a certain angle, keeping the pipe 7 in a normally closed state. Since the hydraulic oil cannot flow and cannot be further compressed, the shaft 4 cannot move along its axial direction through the spiral pair to drive the piston 5. At this time, the vehicle door is suspended at the current position and cannot be rotated. Compared with traditional vehicle door hinges and vehicle door limiters, the design of the present invention integrates the vehicle door limit function, the rotation process is noiseless and smoother, the limit function is reliable, and it can achieve hovering at any position within the range of the rotation angle.

[0022] In this embodiment, the center of the housing end cover 9 contains a sealing ring.

[0023] A sealing ring is provided to enhance the sealing performance of the device, prevent leakage of hydraulic oil, and enhance the safety of the device.

[0024] Part of the traditional limiter needs to be installed inside the car door, and the main core limit mechanism has no active lubrication device. As time goes by, abnormal noise is prone to occur. When its core components need to be repaired and maintained, it is extremely easy to damage other components when the car door is disassembled and assembled. In the design scheme of the present invention, the car door limiter and the car door hinge are integrated, and the overall structure is on the outside of the car door. There is no need to disassemble the inside of the car door during maintenance, avoiding problems such as damage to other parts of the car door. In addition, the shaft housing contains a certain amount of hydraulic oil, which can actively play a lubricating and silent role, extend the service life of the limiter, and further improve the car door usage experience.

[0025] Traditional door limiters can generally limit the positions to 2-3 within the range allowed by the door opening and closing degree. In different occasions, the existing door limits are difficult to meet the needs. In the design scheme of the present invention, the door sensing device transmits a signal to the control circuit, which controls the unblocking and closing of the pipeline connected to the servo (integrated valve core), and realizes whether the control shaft and the piston can rotate with each other in the form of a spiral pair, so as to limit the rotation of the door when it is rotated to any required position. At the same time, the extreme position of the cooperation between the shaft and the piston is the maximum position of the door angle.

[0026] In this embodiment, fixing screws 10 are installed in the through holes at the upper and lower ends of the door fixing base 3, and the vehicle body fixing base 1 is connected to the vehicle body through nuts.

[0027] Traditional door stoppers restrict the door position by leveraging a clamping device and the concave-convex shape of the stopper rod. However, under certain conditions, such as when the vehicle is parked with a large tilt to one side or in strong winds, the door can become unstable, causing the door to rotate automatically and even leading to accidents. The present invention utilizes a rotating shaft, piston, shaft housing, and hydraulic oil to create relatively closed areas at both ends. When the servo drives the valve core in the circulation pipeline to a closed state, the hydraulic oil at both ends of the shaft housing cannot circulate or be compressed, thereby stably restricting door rotation.

[0028] Working process and principle: When the device is in use, when a person touches the pressure sensor sensing device located on the armrest inside the car door or the door handle outside the car, the control circuit drives the servo 8 to rotate forward by a certain angle, keeping the pipe 7 in a normally open state. When the car door is turned, the rotating shaft 4 drives the piston 5 along its axial direction through the spiral pair, and the hydraulic oil at both ends of the rotating shaft housing 6 flows from the high-pressure end to the low-pressure end through the pipe 7. At this time, the car door can be rotated to any angle position within the allowable rotation angle range, and the extreme position of the cooperation between the rotating shaft 4 and the piston 5 is the maximum position allowed by the car door rotation angle; when the person leaves the pressure sensor sensing device, the control circuit drives the servo 8 to rotate in the opposite direction by a certain angle, keeping the pipe 7 in a normally closed state. Since the hydraulic oil cannot flow and cannot be further compressed, the rotating shaft 4 cannot move along its axial direction through the spiral pair to drive the piston 5. At this time, the car door hovers at the current position and cannot be rotated. The rotation process is noiseless and smoother, and the limit function is reliable, which can achieve hovering at any position within the rotation angle range.

[0029] It is understood from common technical knowledge that the present invention may be implemented by other embodiments that do not depart from its spirit or essential features. Therefore, the embodiments disclosed above are, in all respects, merely illustrative and not exclusive. All modifications within the scope of the present invention or equivalent to the scope of the present invention are intended to be encompassed by the present invention.

Claims

1. A door hinge with an unlimited position function, characterized in that: The invention comprises a vehicle body fixing base (1), wherein the upper and lower ends of the vehicle body fixing base (1) are provided with mounting holes, a wear-resistant part (2) is provided in the mounting hole, a vehicle door fixing base (3) is installed on the wear-resistant part (2), and a limiting mechanism capable of unlimited position is provided on the vehicle body fixing base (1).

2. A vehicle door hinge with an unlimited position function according to claim 1, characterized in that: The limiting mechanism comprises a rotating shaft (4) mounted in a mounting hole on a vehicle body fixed base (1); a piston (5) is connected to the rotating shaft (4); a rotating shaft housing (6) is provided on the outer periphery of the rotating shaft (4); a pipe (7) is connected to the rotating shaft housing (6); a steering gear (8) is provided on the pipe (7); and housing end covers (9) are installed at the upper and lower ends of the rotating shaft housing (6).

3. The vehicle door hinge with an unlimited position function according to claim 2, characterized in that: The surface of the rotating shaft (4) has an external thread, the center of the piston (5) is tubular and has an internal thread, and the piston (5) is connected to the rotating shaft (4) in the form of a screw pair.

4. The vehicle door hinge with an unlimited position function according to claim 2, characterized in that: The center of the housing end cover (9) contains a sealing ring.

5. The vehicle door hinge with an unlimited position function according to claim 4, characterized in that: The shaft housing (6), the shaft (4) and the housing end cover (9) surround the piston (5), and the closed spaces at the upper and lower ends of the interior contain hydraulic oil.

6. The vehicle door hinge with an unlimited position function according to claim 1, characterized in that: Fixing screws (10) are installed in the through holes at the upper and lower ends of the vehicle door fixing base (3).

7. The vehicle door hinge with an unlimited position function according to claim 6, characterized in that: The vehicle body fixing base (1) is connected to the vehicle body via nuts.

Images