Push rod resistance adjusting device for electric limiting stopper and electric limiting stopper

Abstract

The invention discloses a push rod resistance adjusting device for an electric limiter, 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 on two sides of a push rod and are in surface contact with the push rod, one end of the adjustable slide block far away from the push rod is connected with an elastic piece, and the elastic piece is connected with the fixed slide block. The other end of the elastic piece is connected with an adjusting assembly, and the adjusting assembly is configured to enable the elastic potential energy of the elastic piece to be increased or decreased by extruding or loosening the elastic piece, so that the 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, and therefore the consistency of a vehicle door system is improved.

Description

Technical Field

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

[0002] With the development of automobile electrification and intelligence, electric opening and closing of car doors has gradually become popular. The configuration rate of electric tailgate has exceeded 50%, and intelligent electric side doors have also appeared on a few high-end models. As the core component of intelligent electric side doors, electric limiters are still in the early stages of industry development. Although the existing products on the market have achieved basic functions and performance requirements, they still have defects to varying degrees in terms of higher-level requirements such as consistency, reliability, comfort and cost, and the maturity of the products needs to be continuously improved. For example: the internal resistance value of the device varies greatly between different parts of the same product, resulting in poor consistency in the performance of the door system, which is a common pain point in the industry. Summary of the invention

[0003] In view of the problem that the current electric limiter cannot adjust the push rod resistance after assembly, the present invention provides a push rod resistance adjustment device for an electric limiter, which can adjust the push rod resistance, thereby significantly improving the consistency of the door system.

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

[0005] A push rod resistance adjustment device for an electric limiter, the push rod resistance adjustment 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 contact the push rod surface, wherein the adjustable slider is connected to an elastic member at one end away from the push rod, and the other end of the elastic member is connected to an adjustment component, the adjustment component is configured to increase or decrease the elastic potential energy of the elastic member by squeezing or relaxing the elastic member, thereby increasing or decreasing the thrust applied to the adjustable slider by the elastic member, thereby increasing or decreasing the friction between the adjustable slider and the fixed slider and the push rod to adjust the travel resistance of the push rod.

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

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

[0008] According to one aspect of the present invention, the adjusting nut includes a self-locking and anti-loosening structure.

[0009] According to one aspect of the present invention, the elastic member is a coil spring.

[0010] An electric limiter comprises a housing and the push rod resistance adjusting device for the electric limiter as described above.

[0011] According to one aspect of the present invention, a driving device is disposed inside the housing, the driving device is connected to a transmission assembly, the transmission assembly is connected to a push rod, and the push rod is connected to a vehicle body fixing bracket.

[0012] According to one aspect of the present invention, the driving device includes a driving motor installed in a housing, and the driving motor is connected to an output shaft assembly.

[0013] According to one aspect of the present invention, the transmission assembly includes a gear transmission assembly, the gear transmission assembly is connected to the output shaft assembly, the gear transmission assembly is connected to the screw assembly, the screw assembly is provided with a push rod nut slider assembly, and the push rod nut slider assembly is connected to the push rod.

[0014] According to one aspect of the present invention, an adjusting head accommodating cavity is provided on an outer side wall of the shell, and the adjusting head of the adjusting assembly is arranged in the adjusting head accommodating cavity.

[0015] Advantages of the implementation of the present invention: through the arrangement of the adjustable slider, the elastic member and the adjustment assembly, the user can adjust the elastic force of the elastic member through the adjustment assembly, and then adjust the friction between the fixed slider and the adjustable slider and the push rod, so as to control the resistance of the push rod, ensure that the resistance felt by the user when opening and closing the door is more consistent, and improve the use quality of the door; by setting the bolt head of the adjusting bolt outside the shell, the resistance of the push rod can be conveniently adjusted after assembly, thereby significantly improving the consistency of the door system. The push rod resistance adjustment device for the electric limiter provided by the present invention can adjust the resistance of the push rod, thereby improving the consistency of the door system. The electric limiter provided by the present invention can adjust the resistance of the push rod after assembly, ensure that the resistance felt by the user when opening and closing the door is more consistent, and improve the use quality of the door. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 A schematic diagram of the installation of the electric limiter for a vehicle door according to the present invention;

[0018] Figure 2 It is a schematic diagram of the installation of the push rod resistance adjustment device of the electric limiter of the present invention;

[0019] Figure 3 The present invention is a schematic structural diagram of a push rod resistance adjustment device for an electric limiter.

[0020] Numbers in the figure:

[0021] 1. Shell; 11. Upper shell; 12. Lower shell; 13. Adjustment head accommodating chamber; 14. Self-tapping screw; 2. Push rod resistance adjustment device; 21. Fixed slider; 22. Adjustable slider; 23. Adjustment bolt; 24. Adjustment nut; 25. Elastic member; 26. Elastic member baffle; 3. Driving device; 31. Output shaft assembly; 4. Transmission assembly; 41. Gear transmission assembly; 42. Screw assembly; 43. Push rod nut slider assembly; 5. Push rod device; 51. Vehicle body fixing bracket; 52. Push rod; 53. Push rod pin; 6. Door mounting base; 7. Door; 8. Vehicle body. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] In the description of the present invention, unless otherwise specified, the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "top", "bottom" and the like indicate directions or positional relationships based on directions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] Example 1

[0025] like Figure 1 , Figure 2 and Figure 3As shown, a push rod resistance adjustment device for an electric limiter, 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, wherein the end of the adjustable slider 22 away from the push rod 52 is connected to an elastic member 25, and the other end of the elastic member 25 is connected to 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, thereby increasing or decreasing the thrust applied to the adjustable slider by the elastic member 25, thereby increasing or decreasing the friction between the adjustable slider 22 and the fixed slider 21 and the push rod to adjust the travel resistance of the push rod.

[0026] In practical applications, the adjustment assembly includes an adjustment bolt 23 and a fixed adjustment nut 24, the adjustment nut 24 can be fixedly mounted on the housing 1 of the electric limiter or other fixed components, the adjustable slider 22 is movably connected in the housing 1, and the adjustment nut 24 is sleeved on the adjustment bolt 23. The elastic member 25 can be a coil spring, a spring, etc., and an elastic member baffle 26 is provided between the adjustment bolt 23 and the elastic member 25. Preferably, the adjustment bolt 23 passes through the outer wall of the housing 1 and is connected to the elastic member 25, and the bolt head of the adjustment bolt 23 is provided outside the housing 1, so that the user can adjust the resistance of the push rod 52 from outside the housing 1. Preferably, an adjusting head accommodating chamber 13 is provided on an 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 provided in the adjusting head accommodating chamber 13, in order to prevent the bolt head of the adjusting bolt 23 from protruding from the outer side wall of the housing 1, the depth of the adjusting head accommodating chamber 13 is greater than the bolt head of the adjusting bolt 23, preferably, the adjusting nut 24 includes a self-locking anti-loosening structure to prevent the adjusting bolt 23 from loosening. The central axis of the elastic member 25 is colinear 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, the adjustable slider 22 applies the elastic force to the surface of the push rod 52 to generate pressure, the magnitude of the pressure changes the friction between the adjustable slider 22 and the push rod 52, thereby adjusting the magnitude of the resistance to which the push rod 52 is subjected. The factors that affect the resistance of the entire electric limiter include the motor tooth torque, the internal resistance of the reduction box, the friction resistance of the transmission gear assembly, the friction resistance of the screw and the nut, the friction resistance of the push rod, etc. In actual production, the accumulated resistance of these factors will fluctuate greatly. By adjusting the bolt 23 to change the friction resistance of the push rod 52, the fluctuation of the resistance of other components can be compensated, and ultimately the resistance of the electric limiter can be kept at a smaller fluctuation.

[0027] Advantages of this embodiment: through the arrangement of the adjustable slider, the elastic member and the adjusting bolt, etc., the user can adjust the elastic force of the elastic member by adjusting the bolt, and then adjust the friction between the adjustable slider and the push rod, so as to control the resistance force on the push rod; by setting the bolt head of the adjusting bolt outside the shell, the resistance of the push rod can be conveniently adjusted after assembly is completed, thereby significantly improving the consistency of the door system.

[0028] Embodiment 2:

[0029] like Figure 1 , Figure 2 and Figure 3 As shown, an electric limiter includes a push rod resistance device, and the push rod resistance adjustment device 2 is arranged inside the shell 1 of the electric limiter. A door mounting base 6 is arranged on one side of the shell 1, and the door mounting base 6 is used to install the main body of the electric limiter on the door 7. Preferably, the shell 1 includes an upper shell 11 and a lower shell 12 fixedly connected to the upper shell 11 by self-tapping screws 14; a driving device 3 is arranged inside the shell 1, and the driving device 3 includes a driving motor electrically connected through an electric beam and an output shaft assembly 31 connected to the motor, and the output shaft assembly 31 is connected to a transmission assembly 4, and the transmission assembly 4 includes a gear transmission assembly 41 connected to the output shaft, and the gear transmission assembly 41 is connected to a screw assembly 42, and the screw assembly 42 is movably connected to a push rod nut slider assembly 43, the screw rod assembly includes a screw rod connected to the gear transmission assembly, the push rod nut slider assembly 43 is arranged on the screw rod, 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 installed 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 screw rod assembly 42 are all fixedly arranged inside the shell 1, the push rod nut slider assembly 43 drives the push rod device 5 to slide on the screw rod assembly 42, that is, the push rod 52 can slide relative to the shell 1.

[0030] In actual application, the push rod resistance adjustment device 2 includes a fixed slider 21 and an adjustable slider 22 arranged on both sides of the push rod 52, the fixed slider 21 and the adjustable slider 22 are in surface contact with the push rod 52, the fixed slider 21 is fixedly installed inside the shell 1, the adjustable slider 22 is movably connected to the shell 1, the adjustable slider 22 is connected to one end of the elastic member 25 away from the push rod 52, the other end of the elastic member 25 is connected with an adjusting bolt 23, the elastic member 25 can be a coil spring, a spring, etc., an elastic member baffle 26 is arranged between the adjusting bolt 23 and the elastic member 25, an adjusting nut 24 is fixedly installed inside the shell 1, the adjusting nut 24 is sleeved on the adjusting bolt 23, the adjusting bolt 23 passes through the outer wall of the shell 1 and is connected to the elastic member 25, the bolt head of the adjusting bolt 23 is arranged outside the shell 1, so that the user can adjust the resistance of the push rod 52 from the outside of the shell 1. Preferably, an adjusting head accommodating chamber 13 is provided on an 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 provided in the adjusting head accommodating chamber 13, in order to prevent the bolt head of the adjusting bolt 23 from protruding from the outer side wall of the housing 1, the depth of the adjusting head accommodating chamber 13 is greater than the bolt head of the adjusting bolt 23, preferably, the adjusting nut 24 adopts a self-locking anti-loosening structure to prevent the adjusting bolt 23 from loosening. The central axis of the elastic member 25 is colinear 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, the adjustable slider 22 applies the elastic force to the surface of the push rod 52 to generate pressure, the magnitude of the pressure changes the friction between the adjustable slider 22 and the push rod 52, thereby adjusting the magnitude of the resistance to which the push rod 52 is subjected. The factors that affect the resistance of the entire electric limiter include the motor tooth torque, the internal resistance of the reduction box, the friction resistance of the transmission gear assembly, the friction resistance of the screw and the nut, the friction resistance of the push rod, etc. In actual production, the accumulated resistance of these factors will fluctuate greatly. By adjusting the bolt 23 to change the friction resistance of the push rod 52, the fluctuation of the resistance of other components can be compensated, and ultimately the resistance of the electric limiter can be kept at a smaller fluctuation.

[0031] Working principle: the main part of the electric limiter is installed in the car door 7, the body fixing bracket 51 is installed on the car body 8, the body fixing bracket 51 is connected to the main part of the electric limiter through the push rod 52, and the extension and contraction of the push rod 52 are driven to drive the car door 7 to open and close. Its function is realized as follows: the driving device 3 is energized to drive the output shaft assembly 31 to rotate, the output shaft assembly 31 is connected to the gear transmission assembly 41, the power is transmitted to the screw assembly 42 through the gear transmission assembly 41, and the speed is adjusted to change the output torque, the screw assembly 42 drives the push rod nut slider assembly 43 to move back and forth along the screw axis direction, and the push rod nut slider assembly 43 is connected to the push rod device 5, driving the push rod device 5 to do back and forth telescopic movement. When the push rod 52 is extended, the car door 7 opens, and when the push rod 52 is retracted, the car door 7 closes, and the extension and contraction movement direction of the push rod 52 is changed by the forward and reverse rotation of the driving motor. The push rod resistance adjustment device 2 is used to adjust the internal resistance of the electric limiter, to balance the individual differences in resistance of other transmission components within the device, and to ensure the consistency of the resistance of the device assembly product.

[0032] Advantages of this embodiment: Through the setting of the push rod resistance adjustment device, the friction resistance of the push rod can be accurately adjusted. The resistance directly acts on the push rod, effectively eliminating the invalid travel of the push rod, thereby avoiding the user from feeling the shaking of the door during use; at the same time, the design controls the resistance of the electric limiter within a smaller tolerance range, ensuring that the resistance felt by the user when opening and closing the door is more consistent, thereby improving the use quality of the door; through the setting of the adjustment bolt, the resistance can be finely adjusted after assembly. By setting the bolt head of the adjustment bolt outside the housing, the resistance of the push rod can be conveniently adjusted after assembly.

[0033] Advantages of the implementation of the present invention: through the arrangement of an adjustable slider, an elastic member, and an adjusting bolt, the user can adjust the elastic force of the elastic member by adjusting the bolt, and then adjust the friction between the adjustable slider and the push rod, thereby controlling the resistance of the push rod, ensuring that the resistance felt by the user when opening and closing the door is more consistent, and improving the use quality of the door; by setting the bolt head of the adjusting bolt outside the shell, the resistance of the push rod can be conveniently adjusted after assembly, thereby significantly improving the consistency of the door system. The push rod resistance adjustment device for an electric limiter provided by the present invention can adjust the resistance of the push rod after assembly, thereby improving the consistency of the door system. The electric limiter provided by the present invention can adjust the resistance of the push rod after assembly, ensuring that the resistance felt by the user when opening and closing the door is more consistent, and improving the use quality of the door.

[0034] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with the art within the technical scope disclosed in the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on 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) comprises a fixed slider (21) and an adjustable slider (22), wherein the fixed slider (21) and the adjustable slider (22) are arranged on both sides of the push rod (52) relative to each other and are in surface contact with the push rod (52), wherein one end of the adjustable slider (22) away from the push rod (52) is connected to an elastic member (25), and the other end of the elastic member (25) is connected to an adjustment component, wherein 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), thereby increasing or decreasing the thrust applied by the elastic member (25) to the adjustable slider, thereby increasing or decreasing the friction between the adjustable slider (22) and the fixed slider (21) and the push rod to adjust the travel 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 assembly comprises an adjustment bolt (23) and a fixed adjustment nut (24); the adjustment bolt (23) is connected to 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 baffle (26) is provided between the elastic member (25) and the adjusting bolt (23).

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

5. The push rod resistance adjustment device for an electric limiter according to claim 1, characterized in that: The elastic member (25) is a coil spring.

6. An electric limiter, characterized in that: The invention comprises a housing (1) and a push rod resistance adjusting device for an electric limiter as claimed in any one of claims 1 to 5.

7. The electric limiter according to claim 6, characterized in that: A driving device (3) is arranged inside the housing (1); the driving device (3) is connected to a transmission assembly (4); the transmission assembly (4) is connected to a push rod (52); and the push rod (52) is connected to a vehicle body fixing bracket (51).

8. The electric limiter according to claim 7, characterized in that: The driving device (3) comprises a driving motor installed in a housing (1), and the driving motor is connected to an output shaft assembly (31).

9. The electric limiter according to claim 8, characterized in that: The transmission assembly (4) comprises a gear transmission assembly (41), the gear transmission assembly (41) is connected to the output shaft assembly (31), the gear transmission assembly (41) is connected to the screw assembly (42), a push rod nut slider assembly (43) is sleeved on the screw assembly (42), and the push rod nut slider assembly (43) is connected to the push rod (52).

10. The electric limiter according to claim 6, characterized in that: An adjusting head accommodating cavity (13) is provided on an outer side wall of the housing (1), and the adjusting head of the adjusting assembly is arranged in the adjusting head accommodating cavity (13).

Images