Battery compartment door modular wake-up control device

Abstract

The utility model relates to electric automobile battery technology field, concretely is a kind of battery compartment door modularization wake-up control device, the problem proposed in background art is solved, it includes shell, motor being arranged in the shell, transmission mechanism and wedge-shaped ball self-reset clutch, the wedge-shaped ball self-reset clutch includes driving disc, driven disc, compression spring and multiple rolling bodies, the driving disc is fixedly connected with the output shaft of motor, the driven disc is fixedly connected with the gear shaft of transmission mechanism, and it is oppositely arranged with the driving disc, the opposite end surface of the driving disc is equipped with multiple circumferential distribution wedge-shaped grooves, each the wedge-shaped groove content is equipped with the rolling body, the compression spring is sleeved on the output shaft of motor, and axial pre-tightening force is applied to the driving disc. The utility model, adopt the cooperation mode of steel ball and wedge-shaped groove, when overload, rapidly disconnect through axial displacement, protect motor and transmission system, react quickly.

Description

Technical Field

[0001] This utility model relates to the field of electric vehicle battery technology, specifically a modular wake-up control device for battery compartment doors. Background Technology

[0002] Currently, most electric vehicle battery compartment doors use a motor-driven opening mechanism. In actual use, the door may fail to open properly due to icing, obstruction by foreign objects, or human interference. If the motor continues to operate under overload conditions, it can easily lead to motor burnout, damage to the transmission mechanism, and other malfunctions, resulting in high repair costs and safety hazards.

[0003] While there are some overload protection devices in the existing technology, such as friction plate clutches, they have problems such as inaccurate protection points, easy wear of friction plates leading to unstable torque transmission, and the need for manual intervention to reset after overload. They cannot meet the requirement of automatic and reliable wake-up of the battery compartment door. Utility Model Content

[0004] To solve the above problems, this utility model provides the following technical solution: a modular wake-up control device for a battery compartment door, comprising a housing, a motor, a transmission mechanism, and a wedge-shaped ball self-resetting clutch disposed within the housing. The wedge-shaped ball self-resetting clutch includes a drive disc, a driven disc, a compression spring, and multiple rolling elements. The drive disc is fixedly connected to the output shaft of the motor, and the driven disc is fixedly connected to the gear shaft of the transmission mechanism and is disposed opposite to the drive disc. Multiple circumferentially distributed wedge-shaped grooves are formed on the opposite end face of the drive disc, and each wedge-shaped groove contains a rolling element. The compression spring is sleeved on the output shaft of the motor and applies an axial preload to the drive disc, causing the drive disc to press against the driven disc, thereby keeping each rolling element in contact with the end face of the driven disc. When the driven disc is obstructed, the drive disc can overcome the preload of the compression spring and generate axial displacement, causing the rolling element to slide out from the clamping position of the wedge-shaped groove, thereby realizing the engagement and disengagement of the motor and the transmission mechanism.

[0005] Furthermore, the compression spring is a butterfly spring, and the output shaft of the motor is provided with a shoulder and a locking nut. One end of the butterfly spring abuts against the shoulder, and the other end is pressed against the drive disc by the locking nut.

[0006] Furthermore, the rolling element is a steel ball.

[0007] Furthermore, the transmission mechanism is a gear reduction mechanism, which includes a small gear coaxially arranged with the driven disk and a large gear meshing with the small gear.

[0008] Furthermore, an output gear for driving the battery compartment door is fixedly connected to the gear shaft of the large gear.

[0009] Furthermore, the drive disk has an annular protrusion on the end face opposite to the driven disk, and the driven disk has an annular groove on the corresponding end face. The annular protrusion extends into the annular groove to achieve radial positioning.

[0010] Furthermore, the side wall of the housing is provided with mounting ears, and the mounting ears are provided with mounting holes.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] The clutch employs a combination of steel balls and wedge grooves. Under overload conditions, it quickly disengages via axial displacement, protecting the motor and transmission system with rapid response. Once the overload condition disappears, the drive disc automatically resets under the action of the compression spring, and the steel balls re-engage in the wedge groove, eliminating the need for manual intervention and achieving a true "wake-up" function. The entire clutch structure has a small axial dimension, facilitating modular design. The preload can be easily adjusted via the locking nut, adapting to the disengagement torque required for different door sizes. The annular protrusion and groove combination between the drive disc and driven disc provides excellent centering guidance, improving transmission smoothness and service life. Attached Figure Description

[0013] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the assembly structure of the motor, transmission mechanism and wedge-shaped ball self-resetting clutch of this utility model.

[0016] Figure 3 This is a schematic diagram of the drive disk structure of this utility model;

[0017] Figure 4 This is a schematic diagram of the driven disk structure of this utility model;

[0018] Figure 5 This is a schematic diagram of the wedge-shaped groove structure of this utility model.

[0019] In the diagram: 1. Housing; 11. Mounting ear; 111. Mounting hole; 2. Motor; 21. Output shaft; 22. Shaft shoulder; 23. Locking nut; 3. Transmission mechanism; 31. Pinion; 32. Gear; 4. Wedge-shaped ball self-resetting clutch; 41. Drive disc; 411. Wedge groove; 412. Annular protrusion; 42. Driven disc; 421. Annular groove; 43. Compression spring; 44. Rolling element; 5. Output gear. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0021] like Figure 1-5 As shown, the modular wake-up control device for the battery compartment door in this embodiment includes a housing 1, a motor 2, a transmission mechanism 3, and a wedge-shaped ball self-resetting clutch 4 disposed within the housing 1. The wedge-shaped ball self-resetting clutch 4 includes a drive disc 41, a driven disc 42, a compression spring 43, and multiple rolling elements 44. The drive disc 41 is fixedly connected to the output shaft 21 of the motor 2, and the driven disc 42 is fixedly connected to the gear shaft of the transmission mechanism 3 and is disposed opposite to the drive disc 41. Multiple circumferentially oriented... The distributed wedge-shaped grooves 411 contain rolling elements 44. A compression spring 43 is sleeved on the output shaft 21 of the motor 2 and applies an axial preload to the drive disc 41, causing the drive disc 41 to press against the driven disc 42. This keeps the rolling elements 44 in contact with the end face of the driven disc 42. When the driven disc 42 is obstructed, the drive disc 41 can overcome the preload of the compression spring 43 and generate an axial displacement, causing the rolling elements 44 to slide out from the clamping position of the wedge-shaped grooves 411, thereby realizing the engagement and disengagement of the motor 2 and the transmission mechanism 3.

[0022] The compression spring 43 is a butterfly spring. The output shaft 21 of the motor 2 is provided with a shoulder 22 and a locking nut 23. One end of the butterfly spring abuts against the shoulder 22, and the other end is pressed against the drive disc 41 by the locking nut 23.

[0023] The rolling element 44 is a steel ball.

[0024] The transmission mechanism 3 is a gear reduction mechanism, which includes a small gear 31 coaxially arranged with the driven disk 42 and a large gear 32 meshing with the small gear 31.

[0025] An output gear 5 for driving the battery compartment door is fixedly connected to the gear shaft of the large gear 32.

[0026] An annular protrusion 412 is provided on the end face opposite to the driven disk 42, and an annular groove 421 is provided on the corresponding end face of the driven disk 42. The annular protrusion 412 extends into the annular groove 421 to achieve radial positioning.

[0027] The side wall of the housing 1 is provided with a mounting ear 11, and the mounting ear 11 is provided with a mounting hole 111.

[0028] The working principle of this utility model is as follows:

[0029] This device is an independent modular assembly. The housing is usually made of aluminum alloy or engineering plastic. The mounting ears 11 on its side wall are fixed to a predetermined position on the vehicle body by bolts through mounting holes 111. It is usually located on the vehicle frame near the battery compartment. The output gear 5 serves as the power output end of the entire device and is used to connect with the battery compartment door drive mechanism. A common connection method is that the output gear 5 meshes with a rack fixed on the battery compartment door. When the output gear 5 rotates forward and backward, it can drive the rack to move linearly, thereby driving the door to open or close. In another embodiment, the output gear 5 can also convert the rotational motion into the translational or flipping motion of the door through a linkage mechanism or rope mechanism.

[0030] During normal operation, motor 2 starts, and power is transmitted to drive disc 41 via output shaft 21. Under the preload of disc spring 43, drive disc 41 presses steel ball 44 tightly against the end face of driven disc 42. Due to the action of wedge groove 411, rotational force forces steel ball 44 to move towards the narrow end of the groove, thereby locking drive disc 41 and driven disc 42. Power is smoothly transmitted to pinion 31, and after gear reduction, it is output by output gear 5. When the door is opened, driven disc 42 is obstructed and cannot rotate. Motor 2 drives drive disc 41 to continue rotating, and steel ball 44 is subjected to great resistance. Forced to roll towards the wide end of the wedge groove 411, a component force is generated that causes the drive disc 41 to move axially backward against the pressure of the disc spring 43. As the drive disc 41 moves backward, the clamping force between the steel ball 44 and the driven disc 42 disappears, the clutch enters a slipping state, and the motor 2 idles, thus protecting the entire system. When the jamming disappears, the resistance acting on the driven disc 42 is removed, and the elastic force of the disc spring 43 pushes the drive disc 41 to press against the driven disc 42 again. The steel ball 44 is pressed into the narrow end of the wedge groove 411 and jammed again. Power transmission is restored, the device automatically resets, and the door opening action continues.

[0031] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A modular wake-up control device for a battery compartment door, comprising a housing (1), a motor (2) disposed within the housing (1), a transmission mechanism (3), and a wedge-shaped ball self-resetting clutch (4), characterized in that, The wedge-shaped ball self-resetting clutch (4) includes a drive disc (41), a driven disc (42), a compression spring (43), and multiple rolling elements (44). The drive disc (41) is fixedly connected to the output shaft (21) of the motor (2). The driven disc (42) is fixedly connected to the gear shaft of the transmission mechanism (3) and is arranged opposite to the drive disc (41). Multiple circumferentially distributed wedge-shaped grooves (411) are opened on the opposite end face of the drive disc (41). Each wedge-shaped groove (411) contains a rolling element (44). The compression spring (43) is fixedly connected to the output shaft (21) of the motor (2). 3) The drive disc (41) is sleeved on the output shaft (21) of the motor (2) and an axial preload is applied to the drive disc (41) so that the drive disc (41) presses against the driven disc (42) so that each of the rolling elements (44) keeps in contact with the end face of the driven disc (42). When the driven disc (42) is obstructed, the drive disc (41) can overcome the preload of the compression spring (43) and generate axial displacement, so that the rolling elements (44) slide out from the clamping position of the wedge groove (411), thereby realizing the engagement and disengagement of the motor (2) and the transmission mechanism (3).

2. The modular wake-up control device for a battery compartment door according to claim 1, characterized in that: The compression spring (43) is a butterfly spring. The output shaft (21) of the motor (2) is provided with a shoulder (22) and a locking nut (23). One end of the butterfly spring abuts against the shoulder (22), and the other end is pressed against the drive disc (41) by the locking nut (23).

3. The modular wake-up control device for a battery compartment door according to claim 1, characterized in that: The rolling element (44) is a steel ball.

4. The modular wake-up control device for a battery compartment door according to claim 1, characterized in that: The transmission mechanism (3) is a gear reduction mechanism, which includes a small gear (31) coaxially arranged with the driven disk (42) and a large gear (32) meshing with the small gear (31).

5. A modular wake-up control device for a battery compartment door according to claim 4, characterized in that: An output gear (5) for driving the battery compartment door is fixedly connected to the gear shaft of the large gear (32).

6. The modular wake-up control device for a battery compartment door according to claim 1, characterized in that: The drive disk (41) has an annular protrusion (412) on the end face opposite to the driven disk (42), and the driven disk (42) has an annular groove (421) that cooperates with it on the corresponding end face. The annular protrusion (412) extends into the annular groove (421) to achieve radial positioning.

Images