Vehicle door electric driving device with adjustable internal resistance and vehicle

Abstract

The utility model relates to a vehicle door electric driving device with an adjustable internal resistance and a vehicle. The vehicle door electric driving device comprises a shell, a driving device and a driving device, wherein the shell is used for being installed on a vehicle door; the push rod is movably arranged in the shell in the axial direction, and the tail end of the push rod extends out of the shell and is connected to a vehicle body; the driving assembly is used for driving the push rod to move so as to realize opening and closing of a vehicle door, and the driving assembly is mounted in the shell; the adjusting assembly is used for applying a jacking force in the radial direction of the push rod and balancing resistance fluctuation borne by the push rod by adjusting the magnitude of the jacking force, and the adjusting assembly is installed in the shell. The elastic force acts on the surface of the push rod through the pushing part to generate pressure, the friction force between the pushing part and the push rod can be changed through the pressure, and therefore the friction resistance borne by the push rod is adjusted through screwing-in and screwing-out of the threaded shaft, and fluctuation of resistance of other components can be compensated by changing the friction resistance of the push rod through the threaded shaft. And finally, the resistance of the electric driving device keeps small fluctuation.

Description

Technical Field

[0001] The utility model belongs to the technical field of vehicle parts, and particularly relates to an electric door driving device with adjustable internal resistance and a vehicle. Background Art

[0002] With the development of automobile electrification and intelligence, the electric opening and closing of automobile doors has gradually become popular. The configuration rate of electric back doors has exceeded 50%, and electric side doors have also appeared on a few high-end models. As the core component of electric side doors, the electric door drive device is still in the early stage of industry development. Although the existing products on the market have achieved basic functions and performance, they have different degrees of deficiencies in higher-level requirements such as consistency, reliability, comfort and cost, and the maturity of the product needs to be continuously improved. When the traditional electric door drive device drives the push rod to open and close the door, the drive component needs to apply the driving force, and the driving force must be transmitted to the push rod with the help of the transmission component. There are many parts required in the middle, and there are large differences between different parts. When the parts are combined, resistance will be generated to the driving force. For example, the factors affecting the resistance of the entire drive device include motor tooth torque, reduction box internal resistance, transmission gear friction resistance, screw and nut friction resistance, push rod friction resistance, etc. The accumulated resistance will fluctuate greatly, resulting in poor consistency of door system performance. Therefore, we propose a vehicle door electric drive device with adjustable internal resistance and a vehicle to solve the above problems. Utility Model Content

[0003] In order to solve the above problems, the utility model provides a vehicle door electric drive device with adjustable internal resistance and a vehicle, which solves the problem of large resistance fluctuations inside the drive device.

[0004] The utility model is realized by the following scheme: an electric door driving device with adjustable internal resistance, comprising:

[0005] A housing for mounting on a vehicle door;

[0006] A push rod is axially movably arranged inside the housing, and a distal end of the push rod extends out of the housing and is connected to the vehicle body;

[0007] A driving assembly for driving the push rod to move so as to open and close the door, wherein the driving assembly is installed in the housing;

[0008] An adjusting component applies a thrust force in the radial direction of the push rod and balances the resistance fluctuation suffered by the push rod by adjusting the magnitude of the thrust force. The adjusting component is installed in the housing.

[0009] A further improvement of the electric door drive device with adjustable internal resistance of the utility model is that the adjustment component includes a fixed block and a movable block respectively clamped on opposite sides of the push rod along the radial direction of the push rod, and a pushing member for applying the pushing force to the movable block, and a guide groove for accommodating the movable block is opened in the shell along the direction of applying the pushing force.

[0010] A further improvement of the electric door driving device with adjustable internal resistance of the utility model is that the movable block comprises a pushing portion for contacting the push rod and an elastic portion connected to the pushing portion and for the pushing member to push.

[0011] A further improvement of the electric door driving device with adjustable internal resistance of the utility model is that the pushing member includes a threaded shaft arranged along the pushing direction and inserted into the guide groove to push the elastic part, and also includes a nut threadedly connected to the threaded shaft, and a slot for clamping and limiting the nut is provided in the housing;

[0012] One end of the threaded shaft facing away from the guide groove extends out of the housing for a screwing operation.

[0013] A further improvement of the electric door driving device with adjustable internal resistance of the utility model is that one end of the elastic part relative to the threaded shaft is connected with a blocking piece for the threaded shaft to push, and the size of the blocking piece is adapted to the size of the guide groove.

[0014] A further improvement of the electric door drive device with adjustable internal resistance of the utility model is that the push rod includes a steel core and a plastic coating layer wrapped around the outside of the steel core, the steel core is made of high-strength carbon steel material, and the plastic coating layer is made of plastic coating injection molding process.

[0015] A further improvement of the electric door driving device with adjustable internal resistance of the utility model is that the housing is mainly formed by connecting an upper cover housing and a lower bottom housing;

[0016] The lower edge of the upper cover shell is provided with a water retaining brim which surrounds a circle, and the upper edge of the lower bottom shell is provided with a water retaining boss which surrounds a circle. When the upper cover shell is butt-jointed with the lower bottom shell, the water retaining brim and the water retaining boss are staggered.

[0017] A further improvement of the electric door driving device with adjustable internal resistance of the utility model is that a convex rib is provided on the upper cover shell, and a sealing strip is provided on the lower bottom shell;

[0018] When the upper cover shell and the lower bottom shell are butted against each other, the sealing strip and the convex rib are interference fit.

[0019] A vehicle comprising:

[0020] Car body;

[0021] A door, movably connected to the vehicle body; and

[0022] In the electric door driving device with adjustable internal resistance as described above, the push rod is connected to the vehicle body, and the shell is installed on the vehicle door.

[0023] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0024] 1. The utility model compresses the elastic part by screwing in the threaded shaft to make it have elastic force, and the push part will exert the elastic force on the surface of the push rod to generate pressure. The size of the pressure can change the friction between the push part and the push rod, so that the size of the friction resistance of the push rod can be adjusted by screwing in and out of the threaded shaft. By changing the friction resistance of the push rod through the threaded shaft, the fluctuation of the resistance of other components can be compensated, and finally the resistance of the electric drive device can be kept at a small fluctuation. The adjustment component is used to adjust the internal resistance of the device, to balance the individual differences in the resistance of other transmission components inside the device, and to ensure the consistency of the resistance of the electric drive device product.

[0025] 2. The utility model designs three waterproof structures through the outer shell of the electric drive device. The water-retaining brim on the upper cover shell can prevent water drops or water flows from above from directly entering the gap between the upper cover shell and the lower bottom shell, which is the first waterproof; the water-retaining boss on the lower bottom shell can prevent water flowing along the surface of the lower bottom shell from entering the gap between the upper and lower shells, which is the second waterproof; the convex rib structure of the upper cover shell and the sealing strip have an interference fit to prevent water from entering the interior through the gap between the upper and lower shells, which is the third waterproof. The protection of the three waterproof structures can ensure that the components inside the shell are protected from rain erosion, thereby extending the service life of the electric drive device.

[0026] 3. The utility model adopts high-strength carbon steel as the steel core material to meet the strength requirements of the push rod. The outer plastic layer adopts the overmolding process, and the surface is smooth and beautiful, which is used to improve the appearance quality of the customer-visible area of ​​the push rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A schematic diagram of a vehicle of the present utility model is shown.

[0028] Figure 2 The exploded schematic diagram of the electric drive device of the utility model is shown.

[0029] Figure 3 The cross-sectional structure diagram of the regulating component of the utility model is shown.

[0030] Figure 4 The cross-sectional structure diagram of the utility model is shown in the state where the upper cover shell and the lower bottom shell are in docking state.

[0031] Figure 5 The utility model shows a schematic diagram of the cross-sectional structure of the push rod.

[0032] In the figure: 1. shell; 11. upper cover shell; 111. water retaining brim; 112. convex rib; 12. lower bottom shell; 121. water retaining boss; 122. sealing strip; 2. adjustment assembly; 21. fixing block; 22. push portion; 23. elastic portion; 24. baffle; 25. nut; 26. threaded shaft; 27. guide groove; 3. push rod; 31. steel core; 32. plastic coating; 4. drive assembly; 41. drive motor assembly; 42. output shaft assembly; 43. gear transmission assembly; 44. screw assembly; 45. push rod slider assembly; 5. electric drive device; 6. door; 7. body. DETAILED DESCRIPTION

[0033] In order to solve the problem of large fluctuation of resistance inside the driving device, the utility model provides a vehicle door electric driving device with adjustable internal resistance and a vehicle. The following is a further description of the vehicle door electric driving device with adjustable internal resistance and a vehicle with specific embodiments combined with the accompanying drawings.

[0034] See also Figure 1 to Figure 5 As shown, a vehicle door electric drive device 5 with adjustable internal resistance includes:

[0035] A housing 1 for mounting on a vehicle door 6;

[0036] A push rod 3 is axially movably disposed inside the housing 1, and a distal end of the push rod 3 extends out of the housing 1 and is connected to a vehicle body 7;

[0037] A driving assembly 4 for driving the push rod 3 to move so as to open and close the door 6, wherein the driving assembly 4 is installed in the housing 1;

[0038] The adjusting component 2 applies a thrust force in the radial direction of the push rod 3 and balances the resistance fluctuation suffered by the push rod 3 by adjusting the magnitude of the thrust force. The adjusting component 2 is installed in the housing 1.

[0039] Specifically, the driving component 4 is mainly composed of a driving motor assembly 41 for providing power, an output shaft assembly 42 for transmission, a gear transmission assembly 43 with adjustable speed to change the output torque, a screw assembly 44 and a push rod slider assembly 45 for driving the push rod 3 to move back and forth. When in use, power is output through the driving motor assembly 41 and transmitted to the gear transmission assembly 43 by the output shaft assembly 42, thereby driving the screw assembly 44 to rotate, which can drive the push rod slider assembly 45 screwed thereto to move back and forth, thereby driving the push rod 3 to move back and forth to achieve opening and closing of the door 6; the friction resistance of the push rod 3 can be changed by adjusting the component 2 to compensate for the fluctuation of the resistance of other components, and finally the resistance of the electric drive device 5 is kept at a small fluctuation. The adjusting component 2 is used to adjust the internal resistance of the device to balance the individual differences in the resistance of other transmission components inside the device, and to ensure the consistency of the product resistance of the electric drive device 5.

[0040] Among them, the adjustment component 2 includes a fixed block 21 and a movable block respectively clamped on opposite sides of the push rod 3 along the radial direction of the push rod 3, and a pushing member for applying a pushing force to the movable block. A guide groove 27 for accommodating the movable block is opened in the shell along the direction of applying the pushing force.

[0041] By arranging a fixed block 21 and a movable block on opposite sides of the push rod 3, both sides of the push rod 3 can be subjected to clamping friction force. By adjusting the pushing piece, the pushing force applied to the movable block can be changed, which will change the size of the friction resistance experienced by the push rod 3, which is beneficial for balancing the individual differences in the resistance of other transmission components inside the device as needed.

[0042] The movable block includes a pushing portion 22 for contacting the push rod 3 and an elastic portion 23 connected to the pushing portion 22 and for the pushing member to push.

[0043] The push portion 22 is used to apply a push force to the push rod 3, and the elastic portion 23 can be a coil spring, which is a medium for the push member to apply pressure to the push portion 22, which is convenient for adjustment.

[0044] The pushing member includes a threaded shaft 26 arranged along the pushing direction and inserted into the guide groove 27 to push the elastic part 23, and also includes a nut 25 threadedly connected to the threaded shaft 26. A slot for clamping the limiting nut 25 is provided in the housing 1.

[0045] One end of the threaded shaft 26 facing away from the guide groove 27 extends out of the housing 1 for a screwing operation.

[0046] By screwing the threaded shaft 26, since the nut 25 is fixed, the threaded shaft 26 can be driven into or out of the guide groove 27 by the thread, thereby changing the pressure applied to the movable block, which is convenient for adjustment during use.

[0047] One end of the elastic portion 23 relative to the threaded shaft 26 is connected to a blocking piece 24 for the threaded shaft 26 to push, and the size of the blocking piece 24 is adapted to the size of the guide groove 27 .

[0048] By adopting the above design, when the threaded shaft 26 is screwed in and out, the movable block will not be driven to rotate together, but the blocking piece 24 will be pushed to slide along the guide groove 27, so as to better compress the elastic part 23, and the pressure it receives can be better applied to the pushing part 22, thereby exerting a good friction resistance on the push rod 3.

[0049] The push rod 3 includes a steel core 31 and a plastic coating layer 32 wrapped around the steel core 31 . The steel core 31 is made of high-strength carbon steel material, and the plastic coating layer 32 is made of plastic coating injection molding process.

[0050] The steel core 31 is made of high-strength carbon steel to meet the strength requirements of the push rod 3 . The outer plastic layer is made of overmolding technology with a smooth and beautiful surface to improve the appearance quality of the customer-visible area of ​​the push rod 3 .

[0051] The housing 1 is mainly formed by connecting an upper cover housing 11 and a lower bottom housing 12;

[0052] The lower edge of the upper cover shell 11 is provided with a water retaining brim 111 surrounding a circle, and the upper edge of the lower bottom shell 12 is provided with a water retaining boss 121 surrounding a circle. When the upper cover shell 11 and the lower bottom shell 12 are connected, the water retaining brim 111 and the water retaining boss 121 are staggered.

[0053] The water-retaining brim 111 on the upper cover shell 11 can prevent water drops or water flows from above from directly entering the gap between the upper cover shell 11 and the lower bottom shell 12; the water-retaining boss 121 on the lower bottom shell 12 can prevent water flowing along the surface of the lower bottom shell 12 from entering the gap between the upper and lower shells, thereby achieving a waterproof effect.

[0054] The upper cover shell 11 is provided with a convex rib 112 , and the lower bottom shell 12 is provided with a sealing strip 122 ;

[0055] When the upper cover shell 11 and the lower bottom shell 12 are butted against each other, the sealing strip 122 and the convex rib 112 are interference fit.

[0056] The interference fit between the rib 112 structure of the upper cover shell 11 and the sealing strip 122 prevents water from entering the interior through the gap between the upper and lower shells. The waterproof structure can protect the components inside the shell 1 from being eroded by rainwater, thereby extending the service life of the electric drive device 5.

[0057] A vehicle comprising:

[0058] Body 7;

[0059] The vehicle door 6 is movably connected to the vehicle body 7; and

[0060] In the above-mentioned electric door driving device 5 with adjustable internal resistance, the push rod 3 is connected to the vehicle body 7 , and the housing 1 is installed on the vehicle door 6 .

[0061] The vehicle designed by adopting the above electric drive device 5 has better performance when opening and closing the vehicle door 6.

[0062] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0063] The utility model is described in detail above in conjunction with the embodiments of the drawings. A person skilled in the art can make various variations of the utility model according to the above description. Therefore, some details in the embodiments should not constitute a limitation of the utility model, and the scope of protection of the utility model shall be defined by the scope of the attached claims.

Claims

1. A vehicle door electric drive device with adjustable internal resistance, characterized in that: include: A housing for mounting on a vehicle door; A push rod is axially movably arranged inside the housing, and a distal end of the push rod extends out of the housing and is connected to the vehicle body; A driving assembly for driving the push rod to move so as to open and close the door, wherein the driving assembly is installed in the housing; An adjusting component applies a thrust force in the radial direction of the push rod and balances the resistance fluctuation suffered by the push rod by adjusting the magnitude of the thrust force. The adjusting component is installed in the housing.

2. The electric door drive device with adjustable internal resistance as claimed in claim 1, characterized in that: The adjustment assembly includes a fixed block and a movable block respectively clamped on opposite sides of the push rod along the radial direction of the push rod, and a pushing member for applying the pushing force to the movable block. A guide groove for accommodating the movable block is opened in the shell along the direction of applying the pushing force.

3. The electric door drive device with adjustable internal resistance as claimed in claim 2, characterized in that: The movable block comprises a pushing portion for contacting the push rod and an elastic portion connected to the pushing portion and for the pushing member to push.

4. The electric door drive device with adjustable internal resistance as claimed in claim 3, characterized in that: The pushing member includes a threaded shaft arranged along the pushing direction and inserted into the guide groove to push the elastic part, and also includes a nut threadedly connected to the threaded shaft, and a slot for clamping and limiting the nut is provided in the housing; One end of the threaded shaft facing away from the guide groove extends out of the housing for a screwing operation.

5. The electric door driving device with adjustable internal resistance as claimed in claim 4, characterized in that: One end of the elastic part relative to the threaded shaft is connected with a blocking piece for the threaded shaft to push up, and the size of the blocking piece is matched with the size of the guide groove.

6. The electric door driving device with adjustable internal resistance as claimed in claim 1, characterized in that: The push rod comprises a steel core and a plastic coating layer wrapped around the steel core. The steel core is made of high-strength carbon steel material, and the plastic coating layer is made of a plastic coating injection molding process.

7. The electric door driving device with adjustable internal resistance as claimed in claim 1, characterized in that: The shell is mainly formed by connecting an upper cover shell and a lower bottom shell; The lower edge of the upper cover shell is provided with a water retaining brim which surrounds a circle, and the upper edge of the lower bottom shell is provided with a water retaining boss which surrounds a circle. When the upper cover shell is butt-jointed with the lower bottom shell, the water retaining brim and the water retaining boss are staggered.

8. The electric door driving device with adjustable internal resistance as claimed in claim 7, characterized in that: The upper cover shell is provided with convex ribs, and the lower bottom shell is provided with sealing strips; When the upper cover shell and the lower bottom shell are butted against each other, the sealing strip and the convex rib are interference fit.

9. A vehicle, characterized in that: include: Car body; The door is movably connected to the vehicle body; as well as According to the electric door drive device with adjustable internal resistance as described in any one of claims 1 to 8, the push rod is connected to the vehicle body and the shell is installed on the vehicle door.

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