Electric tail gate driving mechanism with overload protection function and pickup truck comprising electric tail gate driving mechanism

Abstract

The utility model relates to the technical field of automobile driving systems, in particular to an electric tail gate driving mechanism with an overload protection function and a pickup truck comprising the electric tail gate driving mechanism, the electric tail gate driving mechanism comprises a motor assembly and an output part, the motor assembly is used for driving the output part to rotate, and the electric tail gate driving mechanism further comprises an overload protection device, the overload protection device is arranged between the motor assembly and the output part, and when the output torque of the motor assembly exceeds a set value, the torque, acting on the output part, of the overload protection device is interrupted; otherwise, the method is not interrupted. According to the overload protection device, the motor assembly can be protected, when the required torque exceeds a set value due to overload or mechanical faults, the torque transmitted by a transmission system is limited in a slipping mode, and when the overload situation disappears, connection is automatically recovered, so that mechanical damage is prevented, and expensive shutdown loss is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile drive systems, and more specifically, to an electric tailgate drive mechanism with overload protection and a pickup truck comprising the same. Background Art

[0002] In the automobile market, with the popularization of product intelligence and electrification, more and more brands of vehicles are equipped with electric tailgate systems, which can realize automatic opening and closing of the tailgate through the electric tailgate drive system, thereby greatly improving user convenience.

[0003] The applicant applied for a Chinese utility model patent with application number: 2023235142568 on 2023-12-22. Figure 1 As shown, it specifically discloses a pickup truck tailgate drive and a pickup truck, wherein the drive has the advantages of small space occupation and convenient installation and disassembly, and the drive comprises: a drive link 100 and a drive mechanism 200, wherein the drive mechanism 200 is used to apply a rotational torque to the drive link 100, so that the tailgate 1 and the drive mechanism 200 rotate relative to the vehicle body, thereby opening or closing the tailgate 1 on the vehicle body.

[0004] With respect to the driving mechanism, the applicant has also optimized the driving mechanism mentioned above, aiming to solve the problem that the motor of the existing driver used in automobiles is easily damaged by overload. Utility Model Content

[0005] The main purpose of the utility model is to provide an electric tailgate drive mechanism with overload protection and a pickup truck comprising the same, aiming to solve the problems in the above-mentioned background technology.

[0006] In order to solve the above technical problems, on the one hand, an electric tailgate driving mechanism with overload protection is proposed, comprising a motor assembly and an output part, wherein the motor assembly is used to drive the output part to rotate, and further comprising:

[0007] The overload protection device is arranged between the motor assembly and the output part. When the output torque of the motor assembly exceeds a set value, the torque acting on the output part by the overload protection device is interrupted; otherwise, it is not interrupted. In the above technical solution, further, the overload protection device is a torque limiter.

[0008] In any of the above technical solutions, further, the torque limiter includes:

[0009] A shell body, wherein the shell body has a chamber, one end of the shell body has an input end connected to the motor assembly, and the other end of the shell body has an opening connected to the chamber;

[0010] A first rotating disk is disposed on the inner wall of the chamber of the shell body and is disposed close to the input end of the shell body;

[0011] A sliding sleeve is slidably disposed in the chamber of the shell body, and the output portion is connected to the sliding sleeve after passing through the opening;

[0012] A second rotating disk is disposed on the sliding sleeve and is disposed opposite to the first rotating disk;

[0013] and a spring, sleeved on the sliding sleeve;

[0014] Wherein, under normal conditions, the spring pushes the sliding sleeve to move toward the first rotating disk, and the second rotating disk thereon is pressed against the first rotating disk, and the opposite end surfaces between the first rotating disk and the second rotating disk are tooth surfaces, and the two are meshed with each other;

[0015] When the output torque of the motor assembly exceeds a set value, the tooth surface on the first rotating disk pushes the tooth surface on the second rotating disk, causing the second rotating disk to rotate, the spring is compressed, and the first rotating disk and the second rotating disk are disengaged.

[0016] In any of the above technical solutions, further, the output unit includes:

[0017] First worm gear;

[0018] a first worm wheel meshing with the first worm;

[0019] and an output shaft, one end of which is connected to the first worm gear and the other end of which is an output end;

[0020] Wherein, after the motor assembly drives the overload protection device to rotate, the overload protection device drives the first worm to rotate.

[0021] In any of the above technical solutions, further, there are two output shafts, which are arranged on both sides of the first worm gear.

[0022] In any of the above technical solutions, further, the output unit also includes:

[0023] a second worm gear connected to an output end of the overload protection device;

[0024] a second worm wheel meshing with the second worm;

[0025] The input end of the first worm is connected to the second worm wheel, and the first worm is perpendicular to the second worm.

[0026] In any of the above technical solutions, further, the electric tailgate driving mechanism also includes:

[0027] The motor assembly and the output part are both arranged in the protective shell, and the output end of the output part extends out of the protective shell.

[0028] On the other hand, a pickup truck is also provided, comprising the electric tailgate drive mechanism described above.

[0029] Beneficial effect: Compared with the prior art, the electric tailgate drive mechanism provided by the present application has an overload protection device that can protect the motor assembly. When the required torque exceeds the set value due to overload or mechanical failure, it limits the torque transmitted by the transmission system in the form of slipping, and automatically restores the connection when the overload condition disappears, thereby preventing mechanical damage and avoiding expensive downtime losses. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] 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.

[0031] Figure 1 is a schematic diagram of the structure of a driver in the background technology;

[0032] Figure 2 It is a three-dimensional structural schematic diagram of the utility model;

[0033] Figure 3 It is a schematic diagram of the internal structure of the utility model;

[0034] Figure 4 It is a schematic diagram of the internal structure of the utility model;

[0035] Figure 5 It is a structural schematic diagram of the overload protection device of the utility model;

[0036] Figure 6 It is a three-dimensional structural schematic diagram of the overload protection device of the utility model;

[0037] Figure 7 It is a schematic diagram of the internal structure of the overload protection device of the utility model;

[0038] Attached Figure 2-Figure 7The markings are as follows: 100, motor assembly; 200, output part; 210, first worm; 220, first worm wheel; 230, output shaft; 240, second worm; 250, second worm wheel; 300, overload protection device; 310, shell body; 311, chamber; 320, first turntable; 330, sliding sleeve; 340, second turntable; 350, spring; 360, sealing cover; 400, protective shell; 410, upper cover; 420, lower cover. DETAILED DESCRIPTION

[0039] 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.

[0040] 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.

[0041] 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.

[0042] 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.

[0043] 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.

[0044] The utility model provides an electric tailgate driving mechanism with overload protection and a pickup truck, so as to solve the problem that the tailgate driving mechanism of the existing pickup truck is easily damaged after being overloaded.

[0045] The following embodiments will be used to describe in detail an electric tailgate drive mechanism with overload protection and a pickup truck of the present application.

[0046] Embodiment 1:

[0047] In this embodiment, the electric tailgate driving mechanism includes a motor assembly 100 and an output unit 200; the motor assembly 100 is mainly a reduction motor assembly 100, which is used to drive the output unit 200 to rotate; the output unit 200 drives Figure 1 The driving connecting rod in the rear end rotates, and the driving connecting rod drives the tailgate to rotate. The forward and reverse rotation of the motor assembly 100 realizes the automatic opening or closing of the tailgate.

[0048] It also includes: an overload protection device 300, which is arranged between the motor assembly 100 and the output part 200. When the output torque of the motor assembly 100 exceeds a set value, the torque acting on the output part 200 by the overload protection device 300 is interrupted; otherwise, it is not interrupted.

[0049] In the present technical solution, since the rear compartment of a pickup truck is mainly used for transporting goods, if the goods loaded in the rear compartment press against the tailgate, causing the tailgate to be blocked and difficult to open, if the tailgate is forcibly opened by the motor assembly 100, the motor assembly 100 is easily damaged. For this reason, an overload protection device 300 is provided. When the motor assembly 100 is running, the torque output by the motor assembly 100 exceeds the set value, indicating that a foreign object has blocked the tailgate. At this time, the overload protection device 300 is started to protect the motor assembly 100, and the tailgate cannot be rotated. After the staff cleans up the foreign object, the tailgate can be opened or closed by the motor assembly 100 after it is no longer blocked.

[0050] Specifically, the overload protection device 300 is a torque limiter, which is also called a safety coupling. Its main function is overload protection. When the required torque exceeds the set value due to overload or mechanical failure, it limits the torque transmitted by the transmission system in the form of slipping, and automatically restores the connection when the overload disappears, thus preventing mechanical damage and avoiding expensive downtime losses.

[0051] Furthermore, the torque limiter comprises:

[0052] The shell body 310 can be cylindrical in shape for easy assembly. The shell body 310 has a chamber 311. One end of the shell body 310 has an input end connected to the motor assembly 100, and the other end has an opening connected to the chamber 311. The first turntable 320 is arranged on the inner wall of the chamber 311 of the shell body 310 and is arranged close to the input end of the shell body 310. The sliding sleeve 330 has a T-shaped structure and can be The output part 200 slides in the chamber 311, and is connected to the sliding sleeve 330 after passing through the opening; the second turntable 340 is arranged on the sliding sleeve 330, and is arranged opposite to the first turntable 320, and the second turntable 340 and the sliding sleeve 330 are an integrated structure; the spring 350, specifically a compression spring, is sleeved on the sliding sleeve 330; and the sealing cover 360, which covers the opening of the shell body 310, is used to encapsulate the components in the chamber 311.

[0053] In this embodiment, under normal conditions, that is, the torque of the motor assembly 100 acting on the input end of the shell body 310 is within the set value, at this time, the spring 350 pushes the sliding sleeve 330 to move toward the first turntable 320, and makes the second turntable 340 thereon press against the first turntable 320, and the opposite end faces between the first turntable 320 and the second turntable 340 are tooth surfaces, and the two are meshed with each other. When the main shell rotates, the first turntable 320 therein drives the second turntable 340 to rotate, and then drives the sliding sleeve 330 to rotate, and the sliding sleeve 330 drives the output part 200 to rotate, and the output part 200 drives the driving connecting rod to rotate, and the tailgate is opened or closed.

[0054] When the output torque of the motor assembly 100 exceeds the set value, the tooth surface on the first turntable 320 pushes the tooth surface on the second turntable 340, causing the second turntable 340 to rotate, and the spring 350 is compressed, so that the first turntable 320 and the second turntable 340 are disengaged; at this time, the motor assembly 100 continues to drive the first turntable 320 to rotate, and the second turntable 340 does not rotate because it is not engaged with the first turntable 320, and the sliding sleeve 330 does not drive the output part 200 to rotate, thereby achieving overload protection.

[0055] Embodiment 2:

[0056] This embodiment is a further improvement made on the basis of the first embodiment.

[0057] In this embodiment, the output part 200 includes: a first worm 210; a first worm wheel 220 meshing with the first worm 210; and an output shaft 230, one end of which is connected to the first worm wheel 220 and the other end is an output end. There are two output shafts 230, which are arranged on both sides of the first worm wheel 220.

[0058] After the motor assembly 100 drives the overload protection device 300 to rotate, the overload protection device 300 drives the first worm 210 to rotate.

[0059] In the present technical solution, a worm gear structure is adopted to achieve the purpose of a small torque motor generating a large linear output force, thereby facilitating driving the tailgate.

[0060] Embodiment three:

[0061] This embodiment is a further improvement made on the basis of any of the above embodiments.

[0062] In this embodiment, the output unit 200 further includes:

[0063] The second worm 240 is connected to the output end of the overload protection device 300 ; the second worm wheel 250 is meshed with the second worm 240 ; wherein the input end of the first worm 210 is connected to the second worm wheel 250 , and the first worm 210 is perpendicular to the second worm 240 .

[0064] In the present technical solution, a second set of worm gear structures is provided, on the one hand, to further improve the output torque of the entire drive mechanism; on the other hand, through combined assembly, the entire drive mechanism structure can be made more compact and occupy less space.

[0065] Embodiment 4:

[0066] This embodiment is a further improvement made on the basis of any of the above embodiments.

[0067] In this embodiment, the electric tailgate driving mechanism further includes: a protective housing 400 , the motor assembly 100 and the output unit 200 are both disposed in the protective housing 400 , and the output end of the output unit 200 extends out of the protective housing 400 .

[0068] In the present technical solution, a protective shell 400 is provided to protect the driving mechanism. The protective shell 400 is divided into an upper cover 410 and a lower cover 420, with an installation chamber 311 therebetween. The upper cover 410 is first opened, and then each structure is sequentially installed in the installation chamber 311. Finally, the upper cover 410 is closed on the lower cover 420, and the upper cover 410 and the lower cover 420 are connected by fixing structures such as bolts.

[0069] Embodiment five:

[0070] This embodiment is a further improvement made on the basis of any of the above embodiments.

[0071] In this embodiment, a pickup truck is provided, comprising the electric tailgate drive mechanism in any of the above embodiments.

[0072] 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. An electric tailgate drive mechanism with overload protection, comprising a motor assembly (100) and an output unit (200), wherein the motor assembly (100) is used to drive the output unit (200) to rotate, and is characterized in that: Also includes: The overload protection device (300) is arranged between the motor assembly (100) and the output part (200); when the output torque of the motor assembly (100) exceeds a set value, the torque of the overload protection device (300) acting on the output part (200) is interrupted; otherwise, it is not interrupted.

2. The electric tailgate drive mechanism with overload protection as claimed in claim 1, characterized in that: The overload protection device (300) is a torque limiter.

3. The electric tailgate driving mechanism with overload protection as claimed in claim 2, characterized in that: The torque limiter comprises: A shell body (310), wherein the shell body (310) has a chamber (311) therein, and one end of the shell body (310) has an input end connected to the motor assembly (100), and the other end has an opening connected to the chamber (311); A first rotating disk (320) is disposed on the inner wall of the chamber (311) of the shell body (310) and is disposed close to the input end of the shell body (310); A sliding sleeve (330) is slidably disposed in the chamber (311) of the shell body (310); the output portion (200) passes through the opening and is connected to the sliding sleeve (330); A second rotating disk (340) is disposed on the sliding sleeve (330) and is disposed opposite to the first rotating disk (320); and a spring (350) sleeved on the sliding sleeve (330); Wherein, under normal conditions, the spring (350) pushes the sliding sleeve (330) to move toward the first rotating disk (320), and causes the second rotating disk (340) thereon to press against the first rotating disk (320), and the opposite end surfaces between the first rotating disk (320) and the second rotating disk (340) are tooth surfaces, and the two are meshed with each other; When the output torque of the motor assembly (100) exceeds a set value, the tooth surface on the first rotating disk (320) pushes the tooth surface on the second rotating disk (340), causing the second rotating disk (340) to rotate, the spring (350) is compressed, and the first rotating disk (320) and the second rotating disk (340) are disengaged.

4. The electric tailgate driving mechanism with overload protection as claimed in claim 1, characterized in that: The output unit (200) comprises: A first worm gear (210); A first worm wheel (220) meshing with the first worm (210); and an output shaft (230), one end of which is connected to the first worm gear (220) and the other end of which is an output end; After the motor assembly (100) drives the overload protection device (300) to rotate, the overload protection device (300) drives the first worm (210) to rotate.

5. The electric tailgate driving mechanism with overload protection as claimed in claim 4, characterized in that: There are two output shafts (230), which are arranged on both sides of the first worm gear (220).

6. The electric tailgate driving mechanism with overload protection as claimed in claim 4, characterized in that: The output unit (200) further includes: a second worm gear (240), the second worm gear (240) being connected to an output end of the overload protection device (300); a second worm wheel (250) meshing with the second worm (240); The input end of the first worm (210) is connected to the second worm wheel (250), and the first worm (210) is perpendicular to the second worm (240).

7. The electric tailgate driving mechanism with overload protection as claimed in claim 4, characterized in that: The electric tailgate driving mechanism also includes: A protective shell (400), the motor assembly (100) and the output part (200) are both arranged in the protective shell (400), and the output end of the output part (200) extends out of the protective shell (400).

8. A pickup truck, characterized in that: It comprises an electric tailgate driving mechanism as described in any one of claims 1 to 7.

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