Automobile door driver for automobile electric door opening system

Abstract

The utility model relates to the technical field of automobile parts, in particular to an automobile door driver for an automobile electric door opening system, which comprises a shell and a push rod arranged in the shell, the push rod is movably arranged, and one end of the push rod penetrates through and extends out of the shell; the lead screw transmission assembly is connected with the push rod; the belt transmission assembly is used for linking the lead screw transmission assembly and the driving assembly; and a drive assembly; when the driving assembly operates, the belt transmission assembly drives the lead screw transmission assembly to move synchronously and enables the push rod to move linearly. The belt transmission assembly comprises a main belt wheel arranged at the output end of the driving assembly, and an auxiliary belt wheel arranged at the output end of the driving assembly. The driven belt wheel is arranged on a lead screw on the lead screw transmission assembly; the driving belt is sleeved on the driving belt wheel and the driven belt wheel; the axial direction of the output end of the driving assembly is parallel to the length direction of the push rod.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile parts, and more specifically, to a door driver for an automobile electric door opening system. Background Art

[0002] With the popularity of new energy vehicles, electric vehicles have already occupied a large share in the automobile market. Their low noise, green and environmental protection, and various high-tech configuration functions are the selling points that attract users. Among the many high-tech configurations, the automatic opening and closing function of the car door is particularly eye-catching. This function not only demonstrates the exquisiteness of modern automobile technology, but also brings great convenience to drivers and passengers in actual use.

[0003] The traditional door limiter has a relatively simple structure, and the door needs to be opened and closed manually. After long-term use, the internal structure may produce abnormal noise due to wear or aging, which not only affects the user's driving experience, but also reduces the overall quality of the vehicle. Therefore, the design of traditional doors can no longer meet the needs of modern consumers.

[0004] The applicant applied for a vehicle side door driver device with publication number CN116480244A on 2023-05-10. Without changing the installation method of the existing vehicle door body limiter and destroying the existing structure in the vehicle door body, the vehicle door body of the existing model can be upgraded and iterated to improve the quality of the vehicle and meet the high-level use needs of customers. However, the driver device has problems such as a large volume occupied in the vertical direction, so it is necessary to improve it for easy installation. Utility Model Content

[0005] The main purpose of the utility model is to provide a door driver for an electric door opening system of an automobile, aiming to solve the technical problems mentioned in the background technology.

[0006] In order to solve the above technical problems, the utility model proposes a door driver for an electric door opening system of an automobile, comprising:

[0007] A housing and a device disposed in the housing

[0008] A push rod, movably arranged, with one end passing through and extending out of the housing;

[0009] A screw transmission assembly connected to the push rod;

[0010] A belt transmission assembly, which links the screw transmission assembly and the drive assembly;

[0011] and a driving assembly; when the driving assembly is running, the belt transmission assembly drives the screw transmission assembly to move synchronously and causes the push rod to move linearly; wherein the belt transmission assembly includes:

[0012] A main pulley, disposed on the output end of the driving assembly;

[0013] A driven pulley is arranged on the screw on the screw transmission assembly;

[0014] and a transmission belt, which is sleeved on the main pulley and the driven pulley;

[0015] Wherein, the axial direction of the output end of the driving assembly is parallel to the length direction of the push rod.

[0016] In the above technical solution, further, the belt transmission assembly also includes:

[0017] The tension adjusting part is arranged in the housing and is used for adjusting the tension of the transmission belt.

[0018] In any of the above technical solutions, further, the housing is provided with latch seats located at the upper and lower sides of the transmission belt, and the tension adjustment part is a shift rod with two ends respectively embedded in the two latch seats;

[0019] Wherein, the outer wall of the transmission belt is pressed against the shift rod.

[0020] In any of the above technical solutions, further, the shift lever is rotatably disposed on the two latch seats.

[0021] In any of the above technical solutions, further, the transmission belt is connected to the main pulley and the driven pulley in a spline connection manner.

[0022] In any of the above technical solutions, further, the screw transmission assembly includes:

[0023] A screw rod is disposed in the housing and parallel to the push rod;

[0024] The screw nut is slidably arranged in the housing along the length direction of the screw, and the screw is sleeved on the screw, and threaded transmission can be achieved between the two.

[0025] In any of the above technical solutions, further, there are sliders protruding outwards on both sides of the screw nut, and the housing has a slide groove for the two sliders to slide, and the screw nut is slidably arranged in the slide groove of the housing through the two sliders;

[0026] Wherein, wear-resistant sheets in contact with the slide groove are also arranged on both sides of the sliding block.

[0027] In any of the above technical solutions, further, the driving component is a motor, an electronic damper is provided on the output end of the motor, and an output shaft is provided on the output end of the electronic damper;

[0028] Wherein, the main pulley is arranged on the output shaft.

[0029] Beneficial effect: Compared with the prior art, the door driver for an electric door opening system of an automobile provided by the present application can reduce the space of the driver in the vertical direction by arranging the output end of the driving component horizontally.

[0030] In order to realize the transmission between the driving component and the screw rod, a main pulley, a driven pulley and a transmission belt are provided. When the output shaft of the driving component rotates, the main pulley will be driven to rotate, and the driven pulley will also rotate synchronously under the action of the transmission belt. Compared with the transmission of the gear component,

[0031] First of all, it has overload protection. When the belt drive is overloaded, the transmission belt will slip. It has strong overload protection capability and can prevent pinching.

[0032] Secondly, gear transmission may produce greater vibration and noise during the transmission process. Belt transmission has good flexibility and elasticity, which can absorb and distribute the impact force generated during the transmission process, making the transmission smooth and noiseless.

[0033] Through the cooperation of the slider and the slide groove and the setting of the wear-resistant sheet, precise guidance and positioning are provided for the movement of the screw nut, friction and wear are reduced, and the stability and maintainability of the entire drive are improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0035] Figure 1 It is a schematic diagram of the installation structure of the utility model;

[0036] Figure 2 It is a schematic diagram of the external structure of the utility model;

[0037] Figure 3 It is a schematic diagram of the internal structure of the utility model;

[0038] Figure 4 It is a structural schematic diagram of the transmission belt assembly of the utility model;

[0039] Figure 5 It is a schematic diagram of the connection structure between the nut seat and the housing of the utility model;

[0040] Figure 6 It is a structural schematic diagram of the tension adjusting part of the utility model acting on the transmission belt.

[0041] The following are the descriptions of the reference numerals:

[0042] 1. Car body; 2. Car door; 100. Shell; 200. Push rod; 300. Screw drive assembly; 310. Screw seat; 320. Screw; 330. Screw nut; 331. Slider; 332. Wear-resistant sheet; 400. Belt drive assembly; 410. Main pulley; 420. Driven pulley; 430. Drive belt; 440. Shift lever; 441. Latch seat; 500. Drive assembly; 510. Motor; 520. Electronic damper; 530. Output shaft. DETAILED DESCRIPTION

[0043] Below, the example embodiments according to the present application will be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application, and it should be understood that the present application is not limited to the example embodiments described herein. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0044] It should be noted that, as shown in this application and claims, unless the context clearly indicates an exception, the words "a", "an", "a kind" and / or "the" do not specifically refer to the singular, but may also include the plural. Generally speaking, the terms "include" and "comprise" only indicate the inclusion of clearly identified steps and elements, and these steps and elements do not constitute an exclusive list, and the method or device may also include other steps or elements.

[0045] If the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0046] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0047] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0048] The following embodiments are used to describe in detail a door driver for an electric door opening system of an automobile of the present application.

[0049] Embodiment 1:

[0050] like Figure 1-Figure 6 As shown, in this embodiment, the driver includes:

[0051] The housing 100 is a rectangular parallelepiped structure installed on the vehicle door 2. The housing 100 is assembled from an upper and lower shell and then fixedly connected by screws.

[0052] The shell 100 has an installation chamber for assembling parts, and a push rod 200 is installed in the installation chamber. The push rod 200 is movably arranged, and one end passes through and extends out of the shell 100. The extended end of the push rod 200 is used to be assembled on the vehicle body 1. By driving the push rod 200 to extend or retract, the door 2 is opened from the vehicle body 1 by pushing force, and the door 2 is closed on the vehicle body 1 by pulling force.

[0053] In order to realize the automatic extension or retraction of the push rod 200, the driver further comprises:

[0054] The screw drive assembly 300 mainly consists of a screw 320 seat 310, a screw 320 and a screw 320 nut. Both ends of the screw 320 are rotatably arranged on the screw 320 seat 310, and the screw 320 nut is threadedly connected to the screw 320, and the screw 320 nut is limited by the inner wall of the shell 100. When the screw 320 rotates, the screw 320 nut moves along the length direction of the screw 320; the embedded end of the push rod 200 is installed on the screw 320 nut. When the screw 320 rotates, the push rod 200 and the screw 320 nut perform linear motion synchronously.

[0055] And the driving assembly 500 is used to provide power for the rotation of the screw rod 320.

[0056] In order to reduce the volume of the housing 100 and save installation space, the driver further includes:

[0057] The belt transmission assembly 400 links the screw transmission assembly 300 and the driving assembly 500; when the driving assembly 500 is running, the belt transmission assembly 400 drives the screw transmission assembly 300 to move synchronously and makes the push rod 200 do linear motion.

[0058] Specifically, the belt drive assembly 400 includes: a main pulley 410, which is disposed on the output end of the driving assembly 500; a driven pulley 420, which is disposed on the screw 320 of the screw drive assembly 300; and a transmission belt 430, which is sleeved on the main pulley 410 and the driven pulley 420;

[0059] The axial direction of the output end of the driving assembly 500 is parallel to the length direction of the push rod 200 .

[0060] By arranging the output end of the driving assembly 500 horizontally, the space of the driver in the vertical direction can be reduced. In order to realize the transmission between the driving assembly 500 and the screw rod 320, a main pulley 410, a driven pulley 420 and a transmission belt 430 are provided. When the output shaft 530 of the driving assembly 500 rotates, the main pulley 410 is driven to rotate, and the driven pulley 420 also rotates synchronously under the action of the transmission belt 430. Compared with the transmission by the gear assembly, this method is

[0061] First, it has overload protection. When the belt drive is overloaded, the transmission belt 430 will slip. It has a strong overload protection capability and can play an anti-pinch role.

[0062] Secondly, gear transmission may produce greater vibration and noise during the transmission process. Belt transmission has good flexibility and elasticity, which can absorb and distribute the impact force generated during the transmission process, making the transmission smooth and noiseless.

[0063] It is worth noting that the driving component 500 is a motor 510, an electronic damper 520 is provided at the output end of the motor 510, and an output shaft 530 is provided at the output end of the electronic damper 520;

[0064] The primary pulley 410 is disposed on the output shaft 530 .

[0065] The main function of arranging the electronic damper 520 on the motor 510 is to control the amplitude of vibration by applying inertial damping force to the motor 510, thereby achieving the purpose of controlling the vibration of the motor 510 and ensuring the hovering function.

[0066] Specifically, during the operation of the motor 510, the electronic damper 520 can reduce the vibration and inertia of the rotor of the motor 510, thereby performing load control on the motor 510. This control effect can reduce the rotation speed of the motor 510 by generating resistance, thereby reducing the effect of the inertia of the motor 510, improving the stability and working efficiency of the motor 510, preventing the motor 510 from being overloaded and damaged, and reducing noise and vibration, thereby increasing the service life of the motor 510.

[0067] Embodiment 2:

[0068] This embodiment is a further improvement made on the basis of the first embodiment.

[0069] like Figure 5 As shown, in this embodiment, there are sliders 331 protruding outwardly on both sides of the screw rod 320 nut, and the housing 100 has a slide groove for the two sliders 331 to slide, and the screw rod 320 nut is slidably arranged in the slide groove of the housing 100 through the two sliders 331;

[0070] Wherein, wear-resistant sheets 332 in contact with the slide grooves are also provided on both sides of the sliding block 331 .

[0071] The cooperation between the slider 331 and the slide groove provides accurate guidance and positioning for the movement of the screw rod 320 nut in the housing 100. This design ensures that the screw rod 320 nut can move stably and accurately along a predetermined path, avoiding errors or failures that may be caused by deviations from the movement path.

[0072] The contact between the slider 331 and the slide groove will generate friction, which may cause wear after long-term operation. The wear-resistant sheets 332 are arranged on both sides of the slider 331, which can effectively reduce such friction and wear and improve the durability and service life of the entire screw transmission assembly 300. The wear-resistant sheets 332 are usually made of wear-resistant materials, such as wear-resistant rubber, wear-resistant alloy, etc. These materials have excellent wear resistance and can significantly reduce the heat and wear generated by friction.

[0073] Since the slider 331 and the wear-resistant sheet 332 are independent components, they can be easily replaced when they are worn or damaged without replacing the entire screw 320 nut or housing 100. This design reduces the cost of maintenance and replacement and improves the maintainability of the system.

[0074] Embodiment three:

[0075] This embodiment is a further improvement made on the basis of the first embodiment.

[0076] like Figure 4 and Figure 6 As shown, in this embodiment, the belt drive assembly 400 further includes:

[0077] The tension adjusting unit is disposed in the housing 100 and is used to adjust the tension of the transmission belt 430 .

[0078] To ensure that the belt has proper tension during the transmission process, the adjustment of this tension is crucial to the efficiency and stability of the belt transmission. Specifically, proper belt tension can ensure good friction between the belt and the pulley, thereby effectively transmitting power. If the belt tension is insufficient, it may cause the belt to slip, reduce the transmission efficiency, and even affect the normal operation of the equipment. Excessive tension may increase the wear of the belt, shorten its service life, and may cause damage to other components of the transmission system.

[0079] Therefore, the tension adjusting unit achieves precise control of the belt tension by adjusting the distance or position between the belt and the pulley.

[0080] Specifically, the housing 100 is provided with latch seats 441 located at the upper and lower sides of the transmission belt 430, and the tension adjustment part is a shift rod 440 with two ends respectively embedded in the two latch seats 441;

[0081] The outer wall of the transmission belt 430 is pressed against the shift lever 440 , and the shift lever 440 is rotatably disposed on two latch seats 441 .

[0082] The lever 440 is used as a tension adjustment part, and its two ends are embedded in the latch seat 441. On the one hand, this design is relatively simple and does not require a complex mechanical structure or control system, so it has high reliability and durability. At the same time, it is also easy to maintain and adjust, and the tension can be adjusted without affecting the normal operation of the equipment.

[0083] On the other hand, since the lever 440 is rotatably mounted on the latch seat 441, it can be dynamically adjusted according to the tension change of the transmission belt 430 during operation. For example, when the transmission belt 430 is subjected to an additional load, the lever 440 can absorb this change by rotating itself, thereby maintaining a stable tension of the transmission belt 430.

[0084] Embodiment 4:

[0085] This embodiment is a further improvement made on the basis of the first embodiment.

[0086] In this embodiment, the transmission belt 430 is connected to the primary pulley 410 and the driven pulley 420 in a spline connection manner.

[0087] The spline connection is a high-precision positioning and matching method that can achieve accurate connection between the transmission belt 430 and the pulley, ensuring the stability and reliability of the transmission. Through the matching of the convex and concave grooves of the spline, the gap can be eliminated, the vibration and noise can be reduced, and the stability of the transmission can be improved.

[0088] The transmission belt 430 is connected to the main pulley 410 and the driven pulley 420 by a spline connection, which can achieve the advantages of high precision, high load-bearing capacity, axial fixation, transmission of torque and speed, and easy assembly and disassembly.

[0089] The embodiments of the present disclosure have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical applications, or improvements to the technology in the market, or to enable other persons of ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. A door driver for an electric door opening system of an automobile, characterized in that: include: A housing (100), and a A push rod (200) is movably arranged, and one end of the push rod passes through and extends out of the housing (100); A screw transmission assembly (300) connected to the push rod (200); A belt transmission assembly (400) for linking the screw transmission assembly (300) and the drive assembly (500); and a driving assembly (500); when the driving assembly (500) is in operation, the belt transmission assembly (400) drives the screw transmission assembly (300) to move synchronously, and causes the push rod (200) to move linearly; wherein the belt transmission assembly (400) comprises: A main pulley (410) is arranged on the output end of the driving component (500); A driven pulley (420) is arranged on the screw (320) on the screw transmission assembly (300); and a transmission belt (430) sleeved on the main pulley (410) and the driven pulley (420); Wherein, the axial direction of the output end of the driving assembly (500) is parallel to the length direction of the push rod (200).

2. A door driver for an electric door opening system of an automobile as claimed in claim 1, characterized in that: The belt drive assembly (400) further comprises: A tension adjustment unit is arranged in the housing (100) and is used to adjust the tension of the transmission belt (430).

3. A door driver for an electric door opening system of an automobile as claimed in claim 2, characterized in that: The housing (100) is provided with latch seats (441) located at the upper and lower sides of the transmission belt (430), and the tension adjustment portion is a shift rod (440) with two ends respectively embedded in the two latch seats (441); Wherein, the outer wall of the transmission belt (430) is pressed tightly against the shift rod (440).

4. A door driver for an electric door opening system of an automobile as claimed in claim 3, characterized in that: The shift rod (440) is rotatably disposed on the two latch seats (441).

5. A door driver for an electric door opening system of an automobile as claimed in claim 1, characterized in that: The transmission belt (430) is connected to the main pulley (410) and the driven pulley (420) in a spline connection manner.

6. A door driver for an electric door opening system of an automobile as claimed in claim 1, characterized in that: The screw transmission assembly (300) comprises: A screw rod (320) is disposed in the housing (100) and is parallel to the push rod (200); The screw rod (320) nut is slidably arranged in the housing (100) along the length direction of the screw rod (320), and the screw rod (320) is sleeved on the screw rod (320), so that threaded transmission can be achieved between the two.

7. A door driver for an electric door opening system of a vehicle as claimed in claim 6, characterized in that: Slide blocks (331) are provided on both sides of the screw rod (320) nut and are protruded outwards. The housing (100) has a slide groove for the two slide blocks (331) to slide. The screw rod (320) nut is slidably arranged in the slide groove of the housing (100) via the two slide blocks (331). Wherein, wear-resistant sheets (332) in contact with the slide groove are also provided on both sides of the sliding block (331).

8. A door driver for an electric door opening system of a vehicle as claimed in claim 1, characterized in that: The driving component (500) is a motor (510), an electronic damper (520) is provided at the output end of the motor (510), and an output shaft (530) is provided at the output end of the electronic damper (520); Wherein, the main pulley (410) is arranged on the output shaft (530).

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