Push rod resistance adjusting device for electric limiting stopper

Abstract

The utility model discloses a push rod resistance adjusting device for an electric limiting stopper, the push rod resistance adjusting device comprises a fixed slide block and an adjustable slide block, the fixed slide block and the adjustable slide block are oppositely arranged at two sides of a push rod and are in surface contact with the push rod, the push rod comprises a core rod, the outer surface of the core rod is provided with a plastic coating layer, the end, away from the push rod, of the adjustable sliding block is connected with an elastic piece, the other end of the elastic piece is connected with an adjusting assembly, and the adjusting assembly is configured to enable elastic potential energy of the elastic piece to be increased or decreased by extruding or loosening the elastic piece, so that thrust applied to the adjustable sliding block by the elastic piece is increased or decreased. And the friction force between the adjustable sliding block and the fixed sliding block and the push rod is increased or decreased to adjust the advancing resistance of the push rod. According to the push rod resistance adjusting device for the electric limiting stopper, the resistance of the push rod can be adjusted, so that the consistency of a vehicle door system is improved, and meanwhile the requirement for the attractiveness of the push rod can be met.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile manufacturing, in particular to a push rod resistance adjusting device for an electric limiter. Background Art

[0002] With the development of automobile electrification and intelligence, the electric opening and closing of automobile doors have been gradually popularized. The configuration rate of electric rear doors has exceeded 50%, and intelligent electric side doors also appear in a few high-end models. As a core component of intelligent electric side doors, the electric limiter is still in the initial stage of industry development. Although the existing products in the market have achieved the basic function and performance requirements, there are still defects to varying degrees in terms of higher-level requirements such as consistency, reliability, comfort, and cost, and the maturity of the products still needs to be continuously improved. For example, the internal resistance values of the device vary greatly among different parts of the same product, resulting in poor consistency of the door system performance, which is a common pain point in the industry; the current technology has not been able to realize the adjustment of the push rod resistance after the electric limiter is assembled to solve the problem of door system consistency; at the same time, in the existing technology, the push rod mostly adopts a galvanizing process, which makes the push rod lack aesthetics. Summary of the Utility Model

[0003] In view of the problems that the push rod resistance cannot be adjusted after the electric limiter is assembled and the push rod lacks aesthetics at present, the utility model provides a push rod resistance adjusting device for an electric limiter, which can adjust the resistance of the push rod, thereby significantly improving the consistency of the door system, and at the same time can meet the aesthetic requirements for the push rod.

[0004] To achieve the above object, the embodiments of the utility model adopt the following technical solutions:

[0005] A push rod resistance adjusting device for an electric limiter, the push rod resistance adjusting device includes a fixed slider and an adjustable slider, the fixed slider and the adjustable slider are relatively arranged on both sides of the push rod and are in surface contact with the push rod. The push rod includes a core rod, and a plastic coating is arranged on the outer surface of the core rod. Wherein, an elastic member is connected to one end of the adjustable slider away from the push rod, and an adjusting assembly is connected to the other end of the elastic member. The adjusting assembly is configured to increase or decrease the elastic potential energy of the elastic member by squeezing or relaxing the elastic member, so as to cause the thrust applied by the elastic member to the adjustable slider to increase or decrease, and further cause the friction force between the adjustable slider and the fixed slider and the push rod to increase or decrease to adjust the traveling resistance of the push rod.

[0006] According to one aspect of the present invention, the adjusting assembly includes an adjusting bolt and a fixedly arranged adjusting nut. The adjusting bolt is connected to the elastic member, and the adjusting nut is sleeved on the adjusting bolt.

[0007] According to one aspect of the present utility model, an elastic member flap is provided between the elastic member and the adjusting bolt.

[0008] According to one aspect of the present utility model, the elastic member is a helical spring.

[0009] According to one aspect of the present utility model, the adjusting nut includes a self-locking and anti-loosening structure.

[0010] According to one aspect of the present utility model, the plastic coating layer is made of PA material.

[0011] Advantages of the implementation of the present utility model: Through the setting of the plastic coating layer, the appearance quality of the visible area of the push rod is improved, and the wear resistance of the push rod is enhanced; through the settings of the adjustable slider, elastic member and adjusting bolt, etc., the user can adjust the elastic force of the elastic member through the adjusting bolt, and then adjust the friction force between the adjustable slider and the push rod, so as to control the resistance of the push rod; through the bolt head of the adjusting bolt being arranged outside the housing, the resistance of the push rod can be conveniently adjusted after assembly, thus significantly improving the consistency of the door system. A push rod resistance adjusting device for an electric limiter provided by the present utility model can adjust the resistance of the push rod after assembly, thereby improving the consistency of the door system, improving the appearance quality of the visible area of the push rod, and enhancing the wear resistance of the push rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the following-described drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0013] Figure 1 Schematic diagram of the installation of the door of the electric limiter according to the present utility model;

[0014] Figure 2 Schematic diagram of the installation of the push rod resistance adjusting device of the electric limiter according to the present utility model;

[0015] Figure 3 Schematic diagram of the structure of a push rod resistance adjusting device for an electric limiter according to the present utility model;

[0016] Figure 4 Schematic cross-sectional view of the push rod of a push rod resistance adjusting device for an electric limiter according to the present utility model.

[0017] Reference numerals in the drawings:

[0018] 1. Housing; 11. Upper housing; 12. Lower housing; 13. Bolt head receiving cavity; 14. Self-tapping screw; 2. Push rod resistance adjusting device; 21. Fixed slider; 22. Adjustable slider; 23. Adjusting bolt; 24. Adjusting nut; 25. Elastic member; 26. Elastic member retaining plate; 3. Driving device; 31. Output shaft assembly; 4. Transmission assembly; 41. Gear transmission assembly; 42. Lead screw assembly; 43. Push rod nut slider assembly; 5. Push rod device; 51. Body fixing bracket; 52. Push rod; 521. Core rod; 522. Plastic coated layer; 53. Push rod pin; 6. Door mounting base; 7. Door; 8. Body. Detailed implementation manners

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0020] As Figure 1 , Figure 2 , Figure 3 and Figure 4 shown, a push rod resistance adjusting device for an electric limiter, the push rod resistance adjusting device 2 is arranged inside the housing 1 of the electric limiter, a door mounting base 6 is arranged on one side of the housing 1, and the door mounting base 6 is used to mount the main body part of the electric limiter on the door 7. Preferably, the housing 1 includes an upper housing 11 and a lower housing 12 fixedly connected to the upper housing 11 by self-tapping screws 14; a driving device 3 is arranged inside the housing 1, the driving device 3 includes a driving motor electrically connected by an electric beam and an output shaft assembly 31 connected to the motor, the output shaft assembly 31 is connected to a transmission assembly 4, the transmission assembly 4 includes a gear transmission assembly 41 connected to the output shaft, the gear transmission assembly 41 is connected to a lead screw assembly 42, the lead screw assembly 42 is movably connected to a push rod nut slider assembly 43, the push rod nut slider assembly 43 is connected to the push rod device 5, the push rod device 5 includes a body fixing bracket 51, the body fixing bracket 51 is mounted on the body 8, the body fixing bracket 51 is connected to the push rod nut slider assembly 43 through a push rod 52, the push rod 52 is connected to the body fixing bracket 51 through a push rod pin 53, the driving device 3, the gear transmission assembly 41, and the lead screw assembly 42 are all fixedly arranged inside the housing 1, and the push rod nut slider assembly 43 drives the push rod device 5 to slide on the lead screw assembly 42, that is, the push rod 52 can slide relative to the housing 1.

[0021] In practical applications, the push rod 52 includes a core rod 521 in the middle, and a plastic coating layer 522 is sleeved outside the core rod 521. The core rod is connected to the push rod nut slider assembly 43. Preferably, the core rod 521 is a steel core, and the material is preferably high-strength carbon steel to meet the strength requirements of the push rod. The material of the plastic coating layer can be PA, ABS, PP, PE, PVC, silicone, etc., and PA material is preferred. The plastic coating layer 522 is wrapped on the outer surface of the core rod 521 by plastic coating injection molding process, with a smooth and beautiful surface, which is used to improve the appearance quality of the visible area of the push rod 52 and enhance the wear resistance of the push rod 52.

[0022] In practical applications, the push rod resistance adjusting device 2 includes a fixed slider 21 and an adjustable slider 22. The fixed 21 and the adjustable slider 22 are relatively arranged on both sides of the push rod 52 and are in surface contact with the push rod 52. Among them, one end of the adjustable slider 22 away from the push rod 52 is connected with an elastic member 25, and the other end of the elastic member 25 is connected with an adjusting assembly. The adjusting assembly is configured to increase or decrease the elastic potential energy of the elastic member 25 by squeezing or relaxing the elastic member 25, so as to cause the thrust applied by the elastic member 25 to the adjustable slider to increase or decrease, and further increase or decrease the frictional force between the adjustable slider 22 and the fixed slider 21 and the push rod to adjust the resistance of the push rod during movement.

[0023] In practical applications, the adjusting assembly includes an adjusting bolt 23 and a fixedly arranged adjusting nut 24. The adjusting nut 24 can be fixedly installed on the housing 1 of the electric limiter. The adjustable slider 22 is movably connected within the housing 1, and the adjusting nut 24 is sleeved on the adjusting bolt 23. The fixed slider 21 is fixedly installed inside the housing 1. The adjustable slider 22 is movably connected to the housing 1. The other end of the elastic member 25 is connected to the adjusting bolt 23. The elastic member 25 can be a helical spring, a spring sheet, etc. An elastic member retaining piece 26 is arranged between the adjusting bolt 23 and the elastic member 25. The adjusting nut 24 is fixedly installed inside the housing 1, and the adjusting nut 24 is sleeved on the adjusting bolt 23. The adjusting bolt 23 passes through the outer wall of the housing 1 and is connected to the elastic member 25. The bolt head of the adjusting bolt 23 is arranged outside the housing 1, facilitating the user to adjust the resistance of the push rod 52 from outside the housing 1. Preferably, a bolt head receiving cavity 13 is arranged on one outer side wall of the housing 1. The adjusting bolt 23 passes through the outer side wall of the housing 1 and is connected to the elastic member 25. The bolt head of the adjusting bolt 23 is arranged inside the bolt head receiving cavity 13. In order to prevent the bolt head of the adjusting bolt 23 from protruding from the outer wall of the housing 1, the depth of the bolt head receiving cavity 13 is greater than the bolt head of the adjusting bolt 23. Preferably, the adjusting nut 24 adopts a self-locking and anti-loosening structure to prevent the loosening of the adjusting bolt 23. The central axis of the elastic member 25 is collinear with the central axis of the adjusting bolt 23, parallel to the direction of the adjustable slider 22, and perpendicular to the central plane in the thickness direction of the push rod 52. The user can change the compression length and elastic force of the elastic member 25 by screwing the adjusting bolt 23 in and out. The elastic force of the elastic member 25 acts on the adjustable slider 22, and the adjustable slider 22 acts the elastic force on the surface of the push rod 52 to generate pressure. The magnitude of the pressure changes the frictional force between the adjustable slider 22 and the push rod 52, thereby adjusting the magnitude of the resistance received by the push rod 52. The factors affecting the magnitude of the resistance of the entire electric limiter include the motor cogging torque, the internal resistance of the reduction gearbox, the frictional resistance of the transmission gear assembly, the frictional resistance between the lead screw and the nut, the frictional resistance of the push rod, etc. In actual production, the fluctuations in the total of these will be very large. By changing the frictional resistance of the push rod 52 through the adjusting bolt 23, the fluctuations in the resistance of other components can be compensated, and finally the resistance of the electric limiter is maintained with relatively small fluctuations.

[0024] Advantages of the implementation of the present utility model: Through the setting of the plastic coating layer, the appearance quality of the visible area of the push rod is improved, and the wear resistance of the push rod is enhanced; through the setting of the adjustable slider, elastic member, adjusting bolt, etc., the user can adjust the elastic force of the elastic member through the adjusting bolt, and then adjust the frictional force between the adjustable slider and the push rod, so as to control the resistance of the push rod; through the bolt head of the adjusting bolt being arranged outside the housing, the resistance of the push rod can be conveniently adjusted after assembly, thus significantly improving the consistency of the door system. A push rod resistance adjusting device for an electric limiter provided by the present utility model can adjust the resistance of the push rod after assembly, thereby improving the consistency of the door system, improving the appearance quality of the visible area of the push rod, and enhancing the wear resistance of the push rod.

[0025] The above is only the specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present utility model should be covered by the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be subject to the protection scope of the claims.

Claims

1. A push rod resistance adjustment device for an electric limiter, characterized in that, The push rod resistance adjustment device (2) includes a fixed slider (21) and an adjustable slider (22). The fixed slider (21) and the adjustable slider (22) are relatively arranged on both sides of the push rod (52) and are in surface contact with the push rod (52). The push rod (52) includes a core rod (521), and a plastic coating layer (522) is provided on the outer surface of the core rod (521). Among them, one end of the adjustable slider (22) away from the push rod (52) is connected with an elastic member (25), and the other end of the elastic member (25) is connected with an adjustment component. The adjustment component is configured to increase or decrease the elastic potential energy of the elastic member (25) by squeezing or relaxing the elastic member (25), so as to cause the thrust applied by the elastic member (25) to the adjustable slider to increase or decrease, and further cause the frictional force between the adjustable slider (22), the fixed slider (21) and the push rod to increase or decrease to adjust the traveling resistance of the push rod.

2. The push rod resistance adjustment device for an electric limiter according to claim 1, characterized in that, The adjustment component includes an adjustment bolt (23) and a fixedly arranged adjustment nut (24). The adjustment bolt (23) is connected with the elastic member (25), and the adjustment nut (24) is sleeved on the adjustment bolt (23).

3. The push rod resistance adjustment device for an electric limiter according to claim 2, characterized in that, An elastic member retaining piece (26) is arranged between the elastic member (25) and the adjustment bolt (23).

4. The push rod resistance adjustment device for an electric limiter according to claim 2, characterized in that, The elastic member (25) is a helical spring.

5. The push rod resistance adjustment device for an electric limiter according to claim 2, characterized in that, The adjustment nut (24) includes a self-locking and anti-loosening structure.

6. The push rod resistance adjustment device for an electric limiter according to claim 1, wherein The plastic coating layer (522) is made of PA material.

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