Electric long sliding rail

Abstract

An electric long sliding rail comprises an electric assembly (10), a first sliding rail assembly (20) and a second sliding rail assembly (30). The first sliding rail assembly (20) and the second sliding rail assembly (30) each comprise a lower sliding rail (21), a lead screw assembly (22), an upper sliding rail (23) and a decorative cover (25). The two ends of the first sliding rail assembly (20) and the two ends of the second sliding rail assembly (30) are each provided with a movable shielding assembly (40). An elastic retainer assembly (50) is arranged between the side wall of the lower sliding rail (21) and the side wall of the upper sliding rail (23). The movable shielding assemblies are arranged at the two ends of the first sliding rail assembly and the two ends of the second sliding rail assembly, cleaning is easy, and dirt cannot be hidden in gaps; the elastic retainer assemblies are arranged between the side walls of the lower sliding rails and the side walls of the upper sliding rails, so that stable operation of the long sliding rails can be guaranteed, noise generated in the operation process is reduced to the maximum extent, and quietness is good.

Description

Technical Field

[0001] This utility model relates to the field of automotive seat technology, specifically, it is an electric long slide rail. Background Technology

[0002] With the rapid development of the automotive industry, electric seats have become a mainstream feature in passenger vehicles due to their convenience and comfort. As a core functional component of electric seats, the performance of the long sliding rail assembly directly affects the smoothness, stability, and safety of seat adjustment.

[0003] Chinese invention patent application CN119567970A discloses a concealed offset lead screw electric long slide rail, including an electric component, a wiring harness box, and symmetrically arranged left and right slide rail components. The left and right slide rail components are connected by the electric component, and the wiring harness box is connected to either the left or right slide rail component. Each left and right slide rail component includes a lower slide rail assembly, a lead screw assembly, an upper slide rail assembly, an electric component connecting plate, a decorative component, and an end cap. The lower slide rail assembly is provided with multiple decorative component brackets, and the decorative component is snapped onto the lower slide rail assembly through these brackets. The end cap is snapped onto the lower slide rail assembly through decorative component brackets at both ends of the lower slide rail assembly and is pressed against the decorative component. This electric long slide rail uses end caps to conceal the long slide rail, making it difficult to clean and easily allowing dirt to accumulate in the gaps.

[0004] Chinese utility model patent CN213920748U discloses a long slide rail for a seat, including a left slide rail and a right slide rail, each having an upper slide rail and a lower slide rail slidably connected to each other. The left and right slide rails each include a ball bearing circulation device. In the assembled state, the ball bearing circulation device is fixed to the side wall of the upper slide rail facing the lower slide rail and is housed between the side walls of the upper and lower slide rails. The balls in the ball bearing circulation device allow the upper slide rail to slide relative to the lower slide rail. The ball bearing circulation device includes an upper guard plate, a lower guard plate, and a ball bearing retainer connected to each other. Multiple balls are housed in a first raceway formed by the upper guard plate and the ball bearing retainer, and / or a second raceway formed by the lower guard plate and the ball bearing retainer. When the upper slide rail slides relative to the lower slide rail, at least one of the multiple balls contacts the lower slide rail and rolls upwards. Due to design tolerances or long-term wear, the gap between the upper and lower rails of this type of seat may exceed the allowable threshold, which will produce knocking noises when driving on bumpy roads, and the noise level is high during operation, with generally poor quietness.

[0005] Therefore, existing technologies need to be improved and enhanced. Utility Model Content

[0006] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide an electric long slide rail that is easy to clean, has lower noise, and is quieter.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0008] An electric long slide rail includes an electric component and a first slide rail assembly and a second slide rail assembly with mutually symmetrical structures, wherein the first slide rail assembly and the second slide rail assembly are connected through the electric component.

[0009] Both the first slide rail assembly and the second slide rail assembly include a lower slide rail, a lead screw assembly, an upper slide rail, and a decorative cover.

[0010] Both ends of the first slide rail assembly and the second slide rail assembly are provided with a movable shielding component that is connected to the upper slide rail;

[0011] An elastic retainer assembly is provided between the side wall of the lower slide rail and the side wall of the upper slide rail.

[0012] As a further embodiment of this utility model, the electric assembly includes a motor bracket, a motor mounted on the motor bracket, and a first flexible shaft and a second flexible shaft driven by the motor.

[0013] As a further embodiment of this utility model, an electric control drive module bracket is provided on the side of the motor bracket, and an electric control drive module for driving the motor is installed on the electric control drive module bracket.

[0014] As a further embodiment of this utility model, the movable shielding component includes a movable component mounting base and a movable component. The movable component mounting base has a receiving groove, and the movable component is accommodated in the receiving groove and can move along the length direction of the receiving groove to extend or retract from the receiving groove.

[0015] As a further embodiment of this utility model, the movable component is a constant force spring, and one end of the constant force spring is rotatably mounted in the receiving groove via a shaft pin sleeve.

[0016] As a further embodiment of this utility model, the movable component is a pull strap, and one end of the pull strap is installed in the receiving groove via a retractor.

[0017] As a further embodiment of this utility model, the elastic retainer assembly includes a retainer, an elastic protrusion disposed on the retainer, and two limiting protrusions disposed at both ends of the elastic protrusion, with a spring sheet for pressing against the elastic protrusion disposed between the two limiting protrusions and the elastic protrusion.

[0018] As a further embodiment of this utility model, each of the limiting protrusions has a groove on the side facing the elastic protrusion, and the two ends of the elastic piece are respectively located in the two grooves.

[0019] Compared with the prior art, the beneficial effects of this utility model are:

[0020] Due to the above-mentioned structural design, namely the electric component, the first slide rail component, and the second slide rail component, both ends of the first and second slide rail components are equipped with movable shielding components, which are easy to clean and will not allow dirt to accumulate in the gaps. Elastic retaining brackets are provided between the side walls of the lower slide rail and the side walls of the upper slide rail, which not only ensures the smooth operation of the long slide rail, but also minimizes the noise generated during operation, resulting in good quietness. Attached Figure Description

[0021] Appendix Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0022] Appendix Figure 2 This is a schematic diagram of the structure of the electric component in an embodiment of the present invention;

[0023] Appendix Figure 3 This is a schematic diagram of the structure of the first slide rail assembly according to an embodiment of the present utility model;

[0024] Appendix Figure 4 This is a schematic diagram of the structure of the active shielding component according to an embodiment of the present invention;

[0025] Appendix Figure 5 This is a structural schematic diagram of the elastic retainer assembly according to an embodiment of the present invention.

[0026] The labels in the diagram are as follows:

[0027] 10-Electric assembly, 20-First slide rail assembly, 30-Second slide rail assembly, 40-Modible shielding assembly, 50-Elastic retainer assembly

[0028] 21- Lower slide rail, 22- Lead screw assembly, 23- Upper slide rail, 25- Decorative cover

[0029] 11-Motor bracket, 12-Motor, 13-First flexible shaft, 14-Second flexible shaft, 15-Electrical control drive module bracket, 16-Electrical control drive module

[0030] 41-Modible part mounting base, 42-Modible part

[0031] 51-Cage, 52-Elastic rib, 53-Restricting rib, 54-Spring piece

[0032] 531 - Groove. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the present utility model and are not intended to limit the present utility model; that is, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The components of the embodiments of the present utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0034] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0035] It should be noted that relational terms such as "first" and "second" are used merely 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 a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0036] The features and performance of this utility model will be further described in detail below with reference to the embodiments. Example 1:

[0037] like Figure 1-5 As shown, this application discloses an electric long slide rail, including an electric component 10 and a first slide rail component 20 and a second slide rail component 30 with mutually symmetrical structures. The first slide rail component 20 and the second slide rail component 30 are connected through the electric component 10.

[0038] Both the first slide rail assembly 20 and the second slide rail assembly 30 include a lower slide rail 21, a lead screw assembly 22, an upper slide rail 23, and a decorative cover 25. The lead screw assembly includes a front fixing block, a rear fixing block, a gearbox, and a lead screw. The front and rear ends of the lead screw are respectively provided with a front fixing block and a rear fixing block. The gearbox is connected to the lead screw. The lead screw assembly is fixed inside the lower slide rail through the front fixing block and the rear fixing block. The upper slide rail is connected to the lower slide rail. The upper part of the gearbox is located inside the upper slide rail. The electric component connecting plate 24 is fixed on the upper slide rail 23. The decorative cover 25 is provided on the lower slide rail 21. Multiple decorative cover brackets are provided on the lower slide rail 21. The decorative cover 25 is snapped onto the lower slide rail 21 through the multiple decorative cover brackets.

[0039] Both ends of the first slide rail assembly 20 and the second slide rail assembly 30 are provided with a movable shielding assembly 40 connected to the upper slide rail 23. By providing the movable shielding assembly, when the movable shielding assembly is opened, the long slide rail can be easily cleaned to prevent dirt from accumulating in the gaps. An elastic retainer assembly 50 is provided between the side wall of the lower slide rail 21 and the side wall of the upper slide rail 23. By providing the elastic retainer assembly, not only can the long slide rail be guaranteed to run smoothly, but the noise generated during operation can also be reduced to the greatest extent, resulting in good quietness.

[0040] Specifically, the electric assembly 10 includes a motor bracket 11, a motor 12 mounted on the motor bracket 11, and a first flexible shaft 13 and a second flexible shaft 14 driven by the motor 12. The first flexible shaft and the second flexible shaft respectively cooperate with the gearbox of the first slide rail assembly and the gearbox of the second slide rail assembly. An electric control drive module bracket 15 is provided on the side of the motor bracket 11. An electric control drive module 16 for driving the motor 12 is mounted on the electric control drive module bracket 15. The electric control drive module enables the motor to respond quickly to changes in speed or torque, providing high-precision speed and position control for the motor.

[0041] Specifically, the movable shielding assembly 40 includes a movable component mounting base 41 and a movable component 42. The movable component mounting base 41 has a receiving groove, and the movable component 42 is accommodated in the receiving groove and can move along the length direction of the receiving groove to extend or retract from the receiving groove. A sliding hole is opened in the middle of the decorative cover for the lead screw assembly to perform linear reciprocating motion. In this embodiment, the movable component 42 is a constant force spring. One end of the constant force spring is rotatably mounted in the receiving groove through a shaft pin sleeve, and the other end of the constant force spring is mounted on the upper slide rail through a movable component mounting bracket. When the upper slide rail performs linear reciprocating motion, the constant force spring is stretched or compressed. When compressed, the constant force spring automatically resets and will not curl up or wrinkle, maintaining a constant force and not affecting the movement of the seat, thus ensuring the smoothness of the seat movement. When the constant force spring is stretched, the upper slide rail drives the constant force spring to move within the gap between the decorative cover and the lower slide rail to cover the lower slide rail. At the same time, the edge of the constant force spring is stuck in the gap to ensure smooth stretching and compression of the constant force spring during long strokes, and to prevent the constant force spring from twisting together and causing the movement to fail.

[0042] Specifically, the elastic retainer assembly 50 includes a retainer 51, an elastic protrusion 52 disposed on the retainer 51, and two limiting protrusions 53 disposed at both ends of the elastic protrusion 52. Each limiting protrusion 53 has a groove 531 on the side facing the elastic protrusion 52. A spring piece 54 is disposed between the two limiting protrusions 53 and the elastic protrusion 52 to press against the elastic protrusion 52. The two ends of the spring piece 54 are respectively located in the two grooves 531. Through the above structural design, the elastic protrusion and the limiting protrusion are integrally formed with the retainer and are made of injection molding. Under the action of the elastic protrusion and the spring piece, the elastic protrusion is always pressed against the outer wall surface of the upper slide rail, which can eliminate the gap between the upper slide rail and the lower slide rail and the gap caused by processing errors. After adding lubricating oil, there is almost no friction noise, ensuring quiet operation. Example 2:

[0043] In this embodiment, the movable component 42 is a pull strap. One end of the pull strap is installed in the receiving groove via a retractor. When the upper slide rail makes a linear reciprocating motion, the pull strap is pulled out or retracted. When retracted, the pull strap automatically resets under the action of the retractor, maintaining a constant force and not affecting the seat movement, thus ensuring the smoothness of the seat movement. When the pull strap is stretched, the upper slide rail drives the pull strap to move within the gap between the decorative cover and the lower slide rail to cover the lower slide rail. At the same time, the edge of the pull strap is engaged within the gap, ensuring smooth pulling out and retracting of the pull strap over a long stroke.

[0044] In summary, this utility model, through the above-described structural design, overcomes the shortcomings of the prior art and features a reasonable structure, easy cleaning, and good quietness.

[0045] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. The patent protection scope of the present utility model shall be determined by the claims. Similarly, any equivalent structural changes made based on the description and drawings of the present utility model shall also be included within the protection scope of the present utility model.

Claims

1. An electric long slide rail, comprising an electric component (10) and a first slide rail assembly (20) and a second slide rail assembly (30) with mutually symmetrical structures, the first slide rail assembly (20) and the second slide rail assembly (30) being connected by the electric component (10); each of the first slide rail assembly (20) and the second slide rail assembly (30) includes a lower slide rail (21), a lead screw assembly (22), an upper slide rail (23), and a decorative cover (25), characterized in that: Both ends of the first slide rail assembly (20) and the second slide rail assembly (30) are provided with a movable shielding component (40) connected to the upper slide rail (23). An elastic retainer assembly (50) is provided between the side wall of the lower slide rail (21) and the side wall of the upper slide rail (23).

2. The electric long slide rail according to claim 1, characterized in that: The electric assembly (10) includes a motor bracket (11), a motor (12) mounted on the motor bracket (11), and a first flexible shaft (13) and a second flexible shaft (14) driven by the motor (12).

3. The electric long slide rail according to claim 2, characterized in that: An electric control drive module bracket (15) is provided on the side of the motor bracket (11), and an electric control drive module (16) for driving the motor (12) is installed on the electric control drive module bracket (15).

4. The electric long slide rail according to claim 3, characterized in that: The movable shielding assembly (40) includes a movable mounting base (41) and a movable member (42). The movable mounting base (41) has a receiving groove, and the movable member (42) is accommodated in the receiving groove and can move along the length of the receiving groove to extend or retract from the receiving groove.

5. The electric long slide rail according to claim 4, characterized in that: The movable part (42) is a constant force spring, and one end of the constant force spring is rotatably installed in the receiving groove through a shaft pin sleeve.

6. The electric long slide rail according to claim 4, characterized in that: The movable part (42) is a pull strap, one end of which is installed in the receiving groove by a retractor.

7. The electric long slide rail according to claim 1, characterized in that: The elastic retainer assembly (50) includes a retainer (51), an elastic protrusion (52) disposed on the retainer (51), and two limiting protrusions (53) disposed at both ends of the elastic protrusion (52). A spring piece (54) that abuts against the elastic protrusion (52) is disposed between the two limiting protrusions (53) and the elastic protrusion (52).

8. The electric long slide rail according to claim 7, characterized in that: Each of the limiting protrusions (53) is provided with a groove (531) on the side facing the elastic protrusion (52), and the two ends of the spring piece (54) are respectively located in the two grooves (531).

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