An electric opening and closing mechanism for a vehicle door

Abstract

The application discloses a kind of automobile door electric opening and closing mechanism, it is related to automobile technical field, it includes: transmission part, the transmission part includes moving rod and hinged seat, hinged seat is fixed in vehicle body, moving rod one end is hinged with hinged seat;Moving rod telescopic sliding fit in the inside of door, door is formed with radial limit to transmission part;Door opening and closing process drives moving rod to rotate around the hinged axis of hinged seat, and moving rod and door are relatively slipped along the length direction of moving rod itself;Driving part, the driving part is fixed in the inside of door and is synchronous with door movement, driving part power output end is transmission cooperation with moving rod;Driving part works by moving rod to vehicle body and applies pulling force or thrust, and the reaction force of vehicle body is used to drive door to complete electric opening and closing relative to vehicle body.This application has the effect of simplifying existing door opening and closing structure, improving space utilization, reducing production cost.

Description

Technical Field

[0001] This invention relates to the field of automotive technology, and in particular to an electric opening and closing mechanism for automotive doors. Background Technology

[0002] In the field of vehicle design, car doors have various installation methods, among which the swing-door and suicide-door opening and closing methods are the most widely used. The doors are directly hinged to the car body, and their opening and closing is achieved with the support of the car body; this is the preferred design solution for most passenger cars. In addition, vehicles are usually equipped with door limiters, which are electrically controlled to drive the opening or closing of the doors.

[0003] For related technology, please refer to Chinese Patent No. CN121620629A, which discloses an automatic door closing device. The automatic door closing device includes: a lead screw, one side of which is hinged to the vehicle body and the other side of which is hinged to the door; an opening / closing operation assembly that enables the lead screw to open and close the door; and a braking assembly that is disposed in the opening / closing operation assembly and provides a predetermined pressure to the lead screw to provide a holding force.

[0004] Regarding the aforementioned technologies, the braking component is a motor. When working, the rotational torque output by the motor's drive shaft is converted into a pushing and pulling motion between the door and the body through a complex mechanism, such as the drive shaft, switching gears, and lead screws. This results in a large and costly mechanism, which is not conducive to the structural layout of small cars. At the same time, the manufacturing cost is relatively high, making it difficult to adapt to the widespread application of mass-produced civilian vehicles. Summary of the Invention

[0005] In order to simplify the door opening and closing structure and reduce costs, this application provides an electric opening and closing mechanism for automobile doors.

[0006] This application provides an electric opening and closing mechanism for automobile doors, which adopts the following technical solution: An electric opening and closing mechanism for automobile doors, comprising: The transmission component includes a moving rod and a hinge seat. The hinge seat is fixed to the vehicle body, and one end of the moving rod is hinged to the hinge seat. The moving rod is slidably coupled to the inside of the door, and the door accommodates and limits the transmission component in a circumferential manner. During the opening and closing of the door, the moving rod is driven to rotate around the hinge axis of the hinge seat, and the moving rod and the door slide relative to each other along the length of the moving rod itself. The drive unit is located on the inside of the door, and its power output end is connected to the moving rod for transmission. When the drive unit is working, it applies a pulling or pushing force to the vehicle body through the moving rod, and drives the door to open and close electrically relative to the vehicle body by means of the reaction force of the vehicle body.

[0007] By adopting the above technical solution, the vehicle body supports and limits the moving rod through the hinge seat, allowing the moving rod to rotate in a specific direction around the hinge axis. Under the limiting action of the door, when the drive component is working, it pushes the moving rod to slide relative to the door along its own length direction, thereby driving the door to open and close through the reaction force provided by the vehicle body. The overall structure is simple, requires no complex transmission mechanism, has small installation space requirements, and is easy to popularize and promote.

[0008] Optionally, the driving component includes a power unit, a transmission disc, and a cable. The power unit is fixedly connected to the door, the transmission disc is connected to the output shaft of the power unit, and one end of the cable is fixed and wound around the transmission disc. The door is rotatably mounted with a guide wheel, which is located on the side of the transmission disc away from the hinge seat. After the cable passes around the guide wheel, it is connected to the end of the moving rod away from the hinge seat.

[0009] By adopting the above technical solution, when the power unit is working, it drives the transmission disc to rotate, which in turn drives the cable to wind up. The guide wheel is used to adjust the direction of the tension transmission on the cable. When the transmission disc rotates, it directly applies a force to the opening end of the moving rod, thereby causing the moving rod to slide relative to the door along its own length, realizing the automatic opening and closing of the door. Furthermore, the cable is connected to the moving rod after being redirected by the guide wheel. During operation, it does not need to be exposed in the external space at the connection between the door and the body, making it easy to protect the cable.

[0010] Optionally, the driving component includes a power unit, a transmission disc, and two cables. The transmission disc is connected to the output shaft of the power unit. Two guide wheels are rotatably mounted on the door, and the two guide wheels are arranged at intervals along the length of the moving rod. The transmission disc is located between the two guide wheels. The two cables correspond one-to-one with the two guide wheels. One end of the cable is connected to the transmission disc, and the other end is connected to the moving rod after passing around the corresponding guide wheel. The two cables are wound in opposite directions. When the transmission disc rotates, the two cables are wound up and unwound respectively to drive the door to open and close.

[0011] By adopting the above technical solution, the guide wheel is used to change the direction of force applied to the cable, and the two guide wheels cooperate to support the cable, so that the transmission disc, cable and moving rod form a complete circular transmission chain. When the drive unit is working, the transmission disc cooperates with the cable to apply tension or thrust to the vehicle body through the moving rod, so that the moving rod moves relative to the door along its own length, thereby realizing the automatic opening and closing of the door. During this process, the cable is always inside the door, which helps to protect the cable.

[0012] Optionally, there are two transmission discs, which are coaxially arranged and can rotate relative to each other. One of the transmission discs is connected to the power unit and driven to rotate by the power unit. Two cables are connected to the two transmission discs one to one. An elastic element is provided between the two transmission discs. The elastic element applies a pre-tightening torque to the transmission disc in its natural state, so that the transmission disc has the tendency to tighten the corresponding cable.

[0013] By adopting the above technical solution, when the transmission disc rotates, the cable drives the moving rod to move. Under the action of the elastic element, both transmission discs have the tendency to rewind the corresponding cable, thereby reducing the problem of asynchronous operation of the power unit and door movement caused by cable loosening.

[0014] Optionally, the connection between the cable and the moving rod or the hinge seat is provided with an elastic element two, and the cable forms a tension buffer connection through the elastic element two, which continuously applies tension force to the cable.

[0015] By adopting the above technical solution, the elastic element 2 is used to apply pre-tension to the cable, keeping the cable taut and thus reducing the probability of the door and transmission components moving out of sync due to cable loosening.

[0016] Optionally, the door is equipped with a dust cover, which is located on the outside of the transmission disc, and the dust cover has a clearance opening for the cable to pass through.

[0017] By adopting the above technical solution, the transmission disc rotates to drive the cable to wind up and down. During this process, the cable moves along the clearance opening, and the dust cover protects the cable wound up on the transmission disc, which helps to protect the cable and improve the working safety of the cable.

[0018] Optionally, the cable is fitted with a flexible and retractable corrugated sleeve. One end of the corrugated sleeve extends to the side of the cable and the moving rod or hinge seat and is fixedly connected, while the other end extends to the transmission disc and is fixedly connected to the door.

[0019] By adopting the above technical solution and using corrugated sleeves to protect the cables, the probability of cable damage is further reduced.

[0020] Optionally, the outer side of the transmission disc is provided with a locking groove along the circumferential direction. The locking groove extends in a spiral shape along the axial direction of the transmission disc, and the cable is locked into the locking groove when it is wound up.

[0021] By adopting the above technical solution, the transmission disc limits and guides the cable through the locking groove, reducing the probability of slippage and entanglement on the outside of the transmission disc, which helps to improve the working stability of the cable.

[0022] In summary, this application includes at least one of the following beneficial technical effects: 1. The vehicle body supports and limits the moving rod via a hinged seat, allowing the moving rod to rotate in a specific direction around the hinge axis. Under the limiting action of the door, when the drive component is working, it pushes the moving rod to slide relative to the door along its own length, thereby driving the door to open and close through the reaction force provided by the vehicle body. The overall structure is simple, requires no complex transmission mechanism, has small installation space requirements, and is easy to popularize and promote. 2. When the power unit is working, it drives the transmission disc to rotate, which in turn drives the cable to wind up. The guide wheel is used to adjust the direction of the tension transmission on the cable. When the transmission disc rotates, it directly applies a force to the opening end of the moving rod, thereby causing the moving rod to slide relative to the door along its own length, realizing the automatic opening and closing of the door. Furthermore, the cable is connected to the moving rod after being redirected by the guide wheel. During operation, it does not need to be exposed in the external space at the connection between the door and the body, making it easy to protect the cable. 3. When the transmission disc rotates, the cable drives the moving rod to move. Under the action of the elastic element, both transmission discs tend to rewind the corresponding cables, thereby reducing the problem of asynchronous operation of the power unit and door movement caused by cable loosening. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of Example 1.

[0024] Figure 2 This is a schematic diagram showing the position of the second elastic element in Embodiment 1.

[0025] Figure 3 This is a schematic diagram of the cable connection structure in Example 2.

[0026] Figure 4 This is a schematic diagram of the overall structure of Example 3.

[0027] Figure 5 This is a schematic diagram showing the position of the second elastic element in Embodiment 3.

[0028] Figure 6 This is a schematic diagram showing the position of the elastic element 1 in Embodiment 4.

[0029] Explanation of reference numerals in the attached drawings: 1. Transmission component; 11. Moving rod; 12. Hinge seat; 2. Driving component; 21. Power unit; 22. Transmission disc; 221. Locking slot; 23. Cable; 24. Elastic component one; 25. Elastic component two; 3. Guide wheel; 4. Dust cover; 5. Corrugated sleeve. Detailed Implementation

[0030] The present application will be further described in detail below with reference to all the accompanying drawings.

[0031] This application discloses an electric opening and closing mechanism for automobile doors. Example 1

[0032] Reference Figure 1 and Figure 2An electric opening and closing mechanism for an automobile door includes a door and a vehicle body. The door is hinged to the vehicle body and opens and closes with the support of the vehicle body. A transmission component 1 is provided between the vehicle body and the door. The transmission component 1 includes a moving rod 11 and a hinge seat 12. The hinge seat 12 is fixedly installed on the vehicle body. The moving rod 11 is hinged to the hinge seat 12, and the hinge axis of the moving rod 11 is parallel to the hinge axis of the door.

[0033] Reference Figure 1 and Figure 2 The end of the movable rod 11 furthest from the hinge seat 12 extends to the inside of the door, and the movable rod 11 forms a telescopic sliding engagement with the inside of the door. During the opening and closing of the door, the movable rod 11 swings. The end of the movable rod 11 furthest from the hinge seat 12 is designated as the opening end, and its range of movement is greatest during the swinging of the movable rod 11. A drive component 2 is also installed inside the door, which is used to drive the transmission component 1 to move relative to the door.

[0034] Reference Figure 1 and Figure 2 In this embodiment, the driving component 2 includes a power unit 21, a transmission disc 22, and a cable 23. The power unit 21 is a motor, which is fixedly installed on the inside of the door. During the opening and closing of the door, it drives the motor to move synchronously. The transmission disc 22 is coaxially connected to the output shaft of the motor and drives the transmission disc 22 to rotate when the motor is working. Furthermore, to facilitate the control of the rotation speed of the transmission disc 22, a speed reducer can be provided between the transmission disc 22 and the motor. The specific model of the speed reducer can be selected according to the vehicle model requirements.

[0035] Reference Figure 1 and Figure 2 The cable 23 is wound around the outside of the transmission disc 22 and fixedly connected to the transmission disc 22. When the transmission disc 22 rotates, it can drive the cable 23 to perform winding or unwinding actions. A guide wheel 3 corresponding to the cable 23 is rotatably connected to the door. The guide wheel 3 is located on the side of the transmission disc 22 away from the hinge seat 12. The end of the cable 23 away from the transmission disc 22 is wound around the guide wheel 3 and fixedly connected to the opening end of the moving rod 11.

[0036] Reference Figure 1 and Figure 2 The direction of force applied to the cable 23 is changed by the guide wheel 3, and the cable 23 and the moving rod 11 form a whole. When the cable 23 is wound up, the transmission disc 22 tends to move closer to the hinge seat 12. When the door needs to be closed, the control power unit 21 works, so that the transmission disc 22 drives the cable 23 to wind up. The transmission disc 22 applies a pulling force to the hinge seat 12 through the cable 23. The car body applies a reaction force to the transmission disc 22 through the hinge seat 12 and the cable 23. Under the guidance of the moving rod 11, the transmission disc 22 and the power unit 21 together drive the door to move closer to the car body, thereby realizing the automatic closing of the door.

[0037] Reference Figure 1and Figure 2 During the opening or closing of the car door, the cable 23 remains inside the door, not exposed in the space where the door connects to the body, thus further reducing the probability of contamination or damage to the cable 23 and helping to extend its service life. A locking groove adapted to the cable 23 is provided on the outer circumference of the transmission disc 22. The locking groove is spiral-shaped; during winding, the cable 23 gradually sinks into the locking groove, thereby limiting the relative slippage between the cable 23 and the transmission disc 22, reducing the probability of tangling after winding, and improving the smoothness of the cable 23's winding and unwinding.

[0038] Reference Figure 1 and Figure 2 Furthermore, an elastic element 25, which is a spring, is provided at the end of the cable 23. A telescopic sleeve is slidably connected to the end of the cable 23 connected to the moving rod 11 along the axial direction. The telescopic sleeve is connected to the moving rod 11, for example, by hinge or fixed connection. The cable 23 is slidably connected to the telescopic sleeve along the axial direction, and the elastic element 25 is fixed between the cable 23 and the telescopic sleeve. When the elastic element 25 is in its natural state, a pulling force is applied to the cable 23, causing it to move closer to the moving rod 11. At this time, the cable 23 is in a tensioned state. By applying a continuous preload to the cable 23 using the elastic element 25, the probability of the cable 23 loosening is reduced, and the working stability of the cable 23 is improved.

[0039] Reference Figure 1 and Figure 2 Furthermore, a corrugated sleeve 5 is fitted over the outside of the cable 23. One end of the corrugated sleeve 5 is connected to the door and extends to the transmission disc 22, while the other end is connected to the moving rod 11 or the hinge seat 12 and extends along the cable 23. When the transmission disc 22 drives the cable 23 to wind or unwind, the corrugated sleeve 5 can adapt to the movement of the cable 23, thereby always maintaining protection for the cable 23 and improving the service life of the cable 23.

[0040] Reference Figure 1 and Figure 2 A dust cover 4 is fitted over the outside of the transmission disc 22. The dust cover 4 is installed on the door and has an opening 41 for the cable 23 to pass through. The cable 23 passes through the opening 41 during winding or unwinding. The dust cover 4 protects the transmission disc 22 and the winding cable 23, thereby reducing the probability of damage to the transmission disc 22 or the cable 23 and further improving the service life of the cable 23 and the transmission disc 22.

[0041] The implementation principle of Embodiment 1 of this application is as follows: The vehicle body limits the moving rod 11 through the hinge seat 12, so that the rotation of the moving rod 11 is synchronized with the opening and closing of the door. When the power unit 21 drives the transmission plate 22 to rotate, the reaction force provided by the vehicle body causes the transmission plate 22 and the power unit 21 to drive the door to close. In this process, no manual pushing is required, the mechanism does not need a complex structure, the structure is simple and easy to manufacture, and both the cable 23 and the moving rod 11 are slender structures, requiring little installation space, suitable for small vehicles, and can achieve mass production and popularization. Example 2

[0042] refer to Figure 3 The difference between this embodiment and Embodiment 1 lies in the connection structure of the cable 23. In this embodiment, the cable 23 is wound around the outside of the transmission disc 22, and the middle part of the cable 23 is fixedly connected to the transmission disc 22. The door is rotatably connected to two guide wheels 3, and the transmission disc 22 is located between the two guide wheels 3, so that both ends of the cable 23 are respectively wound around the corresponding guide wheels 3 and connected to the opening end of the moving rod 11. During the rotation of the transmission disc 22, one end of the cable 23 is wound up, and the other end is unwound.

[0043] refer to Figure 3 When the transmission disc 22 rotates, causing the cable 23 on one side of the hinge seat 12 to wind up, the cable 23 on the opening end side simultaneously unwinds. The cable 23 applies tension to the moving rod 11, and through the reaction force, it brings the door closer to the vehicle body, thus achieving automatic door closing. When the cable 23 between the transmission disc 22 and the hinge seat 12 unwinds, the cable 23 between the transmission disc 22 and the opening end winds up, and the cable 23 applies tension to the opening end. At this time, the moving rod 11 gradually extends from inside the door, and through the reaction force, it moves the door away from the vehicle body, thus achieving automatic door opening. Example 3

[0044] refer to Figure 4 and Figure 5 The difference between this embodiment and embodiment 1 is that the structure of the driving component 2 is different. The driving component 2 in this embodiment includes two cables 23. Both cables 23 are wound around the outside of the transmission disk 22 and the winding directions are opposite. The door is rotatably connected to guide wheels 3 corresponding to the two cables 23. The two cables 23 are respectively wound around the corresponding guide wheels 3 and connected to the opening end of the moving rod 11. Since the two cables 23 are wound in opposite directions, when the transmission disk 22 rotates, the two cables 23 can respectively achieve winding and unwinding, thereby driving the moving rod 11 to move relative to the door, realizing the automatic opening and closing of the door. Example 4

[0045] refer to Figure 6The difference between this embodiment and embodiment 1 is that the composition of the driving component 2 is different. In this embodiment, the driving component 2 includes a power unit, two transmission discs 22 and two cables 23. The two transmission discs 22 are arranged coaxially and rotated coaxially. Both transmission discs 22 are sleeved on the outside of the output shaft of the power unit 21. One transmission disc 22 is fixed coaxially with the output shaft of the power unit 21, and the other transmission disc 22 can rotate relative to the output shaft of the power unit 21 around its own axis. An elastic element 24 is provided between the two transmission discs 22. Specifically, the elastic element 24 is a torsion spring. The elastic force of the torsion spring is much greater than the tension required when the cable 23 is wound up. When the output shaft of the power unit 21 is not in operation, it can rotate freely around its own axis. Therefore, when the elastic element 24 is in its natural state, it tends to drive the two transmission discs 22 to wind up the corresponding cables 23, thereby applying a preload to the cables 23, so that the cables 23 always remain taut, improving the transmission stability of the cables 23, reducing the problem of asynchronous rotation of the transmission discs 22 and movement of the moving rod 11 caused by the loosening of the cables 23, and improving the transmission reliability.

[0046] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An electric opening and closing mechanism for automobile doors, characterized in that, include: The transmission component (1) includes a moving rod (11) and a hinge seat (12). The hinge seat (12) is fixed to the vehicle body, and one end of the moving rod (11) is hinged to the hinge seat (12). The moving rod (11) slides and extends within the door, and the door accommodates and limits the transmission component (1). During the opening and closing of the door, the moving rod (11) rotates around the hinge axis of the hinge seat (12), and the moving rod (11) and the door slide relative to each other along the length of the moving rod (11). The drive component (2) is located on the inside of the door. The power output end of the drive component (2) is connected to the moving rod (11) for transmission. When the drive component (2) is working, it applies a pulling or pushing force to the vehicle body through the moving rod (11) and drives the door to open and close electrically relative to the vehicle body by means of the reaction force of the vehicle body.

2. The electric opening and closing mechanism for automobile doors according to claim 1, characterized in that: The drive unit (2) includes a power unit (21), a transmission disc (22), and a cable (23). The power unit (21) is fixedly connected to the door, the transmission disc (22) is connected to the output shaft of the power unit (21), and one end of the cable (23) is fixed and wound around the transmission disc (22). The door is rotatably mounted with a guide wheel (3), which is located on the side of the transmission disc (22) away from the hinge seat (12). The cable (23) passes through the guide wheel (3) and is connected to the end of the moving rod (11) away from the hinge seat (12).

3. The electric opening and closing mechanism for automobile doors according to claim 1, characterized in that: The drive unit (2) includes a power unit (21), a transmission disc (22), and two cables (23). The transmission disc (22) is connected to the output shaft of the power unit (21). Two guide wheels (3) are rotatably mounted on the door. The two guide wheels (3) are arranged at intervals along the length of the moving rod (11). The transmission disc (22) is located between the two guide wheels (3). The two cables (23) correspond one-to-one with the two guide wheels (3). One end of the cable (23) is connected to the transmission disc (22), and the other end is connected to the moving rod (11) after passing through the corresponding guide wheel (3). The two cables (23) are wound in opposite directions. When the transmission disc (22) rotates, the two cables (23) are wound up and unwound respectively to drive the door to open and close.

4. The electric opening and closing mechanism for automobile doors according to claim 3, characterized in that: Two transmission discs (22) are provided. The two transmission discs (22) are arranged coaxially and can rotate relative to each other. One of the transmission discs (22) is connected to the power unit (21) and driven to rotate by the power unit (21). Two cables (23) are connected to the two transmission discs (22) one by one. An elastic element (24) is provided between the two transmission discs (22). The elastic element (24) applies a pre-tightening torque to the transmission disc (22) in its natural state, so that the transmission disc (22) has a tendency to tighten the corresponding cable (23).

5. An electric opening and closing mechanism for automobile doors according to any one of claims 2 to 4, characterized in that: The connection between the cable (23) and the moving rod (11) or the hinge seat (12) is provided with an elastic element two (25). The cable (23) forms a tension buffer connection through the elastic element two (25), and the elastic element two (25) continuously applies tension force to the cable (23).

6. An electric opening and closing mechanism for automobile doors according to any one of claims 2 to 4, characterized in that: The interior of the door is provided with a dust cover (4), which is located on the outside of the transmission disc (22). The dust cover (4) has a clearance opening for the cable (23) to pass through.

7. An electric opening and closing mechanism for automobile doors according to any one of claims 2 to 4, characterized in that: The cable (23) is fitted with a flexible and retractable corrugated sleeve (5). One end of the corrugated sleeve (5) extends to the side of the cable (23) and the moving rod (11) or the hinge seat (12) and is fixedly connected. The other end extends to the position of the transmission disc (22) and is fixedly connected to the door.

8. An electric opening and closing mechanism for automobile doors according to any one of claims 2 to 4, characterized in that: The transmission disc (22) has a circumferentially circumferentially groove (221) on its outer side. The groove (221) extends spirally along the axis of the transmission disc (22). When the cable (23) is wound up, it is inserted into the groove (221).

Images