High-strength front electric slide

Abstract

The present invention provides a high-strength front electric slide rail, including an upper rail, a lower rail, a retaining frame assembly and a transmission mechanism assembly; the upper rail can be slidably arranged along the lower rail and cooperate with the lower rail; the retaining frame assembly is arranged in the retaining frame accommodating space; the transmission mechanism assembly is arranged in the transmission mechanism accommodating space and connects the upper rail and the lower rail; the transmission mechanism assembly includes a gear box assembly, a screw rod, two retaining ring assemblies and a nut bracket assembly; one end of the screw rod is transmission-connected to the gear box assembly; the two ends of the screw rod are respectively connected to a retaining ring assembly, and the gear box assembly and the retaining ring assembly are fixed to the upper rail; the nut bracket assembly is sleeved on the outside of the screw rod through an internal threaded hole, and the nut bracket assembly is fixed to the lower rail. A high-strength front electric slide rail of the present invention adopts a front and rear symmetrical block design, an integrated retaining ring, and a segmented design of the nut bracket; the slide rail can withstand higher strength and meet the 40KN requirement.

Description

Technical Field

[0001] The invention relates to the field of slide rails, and in particular to a high-strength front electric slide rail. Background Art

[0002] The existing front electric slide rail solution is mainly designed for the front seats, and does not take into account the need for slide rails for the second row 60° side double seats. For the second row 60° side seats, the slide rails are required to withstand the inertia force caused by the weight of two people during front and rear collisions, but the strength of the existing slide rails cannot meet the requirements.

[0003] The current three-point seat belts of automobile seats are fixed at one end to the B-pillar and the other two points to the seat. However, the three-point seat belts on the second-row seats and some third-row seats of MPVs are all fixed to the seats, which puts forward a 40KN requirement for the forward and backward static strength of the slide rails.

[0004] The existing front electric slide rail only has the front part of the lead screw to bear the forward and backward strength, and the strength is limited and cannot meet the 40KN requirement.

[0005] In addition, the existing product slide rails need a retaining ring for the front and rear strength support, which has many parts and processes, and the two press-fits have a great impact on the screw runout. The existing front electric slide rails will be forced to tilt when the nut bracket is hit by the front or rear collision, which will crush the lower rail, resulting in the strength failing to meet the 40KN requirement. Summary of the invention

[0006] In view of the deficiencies in the above-mentioned prior art, the present invention provides a high-strength front electric slide rail, which adopts a front and rear symmetrical block design, an integrated retaining ring, and a segmented design for the nut bracket; the slide rail can withstand higher strength, meet the 40KN requirement, and can reduce the number of parts, reduce assembly steps, reduce the impact of the process flow on the screw runout, and improve the sound performance of the slide rail.

[0007] In order to achieve the above-mentioned purpose, the present invention provides a high-strength front electric slide rail, comprising an upper rail, a lower rail, two retaining frame assemblies and a transmission mechanism assembly; the upper rail can be slidably arranged along the lower rail and cooperate with the lower rail, the upper rail and the lower rail cooperate on both sides to form a retaining frame accommodating space respectively, and the upper rail and the lower rail cooperate in the middle to form a transmission mechanism accommodating space; the retaining frame assembly is arranged in the retaining frame accommodating space; the transmission mechanism assembly is arranged in the transmission mechanism accommodating space and connects the upper rail and the lower rail. Lower rail; the transmission mechanism assembly includes a gear box assembly, a screw, two retaining ring assemblies, a rear bracket and a nut bracket assembly; one end of the screw is transmission-connected to the gear box assembly, and the other end of the screw is cooperatively connected to the rear bracket; the two ends of the screw are symmetrically connected to the retaining ring assembly, and the gear box assembly and the retaining ring assembly are fixed to the upper rail; the nut bracket assembly forms an internal threaded hole that cooperates with the screw, and is sleeved on the outside of the screw through the internal threaded hole, and the nut bracket assembly is fixed to the lower rail.

[0008] Preferably, the retaining ring assembly includes a retaining ring and a screw support; the retaining ring is sleeved and fixed on the screw; the top of the screw support is fixedly connected to the upper rail, and the retaining ring limits the screw support along the axial direction of the screw.

[0009] Preferably, the retaining ring is integrally formed, a convex ring is formed at each end of the retaining ring and an annular groove is formed in the middle of the retaining ring; a recessed portion cooperating with the annular groove is formed at the lower part of the screw rod bracket; the retaining ring can be rotatably passed through the annular groove and inserted into the recessed portion; the two convex rings limit the axial position of the screw rod bracket along the screw rod; the top of the screw rod bracket is fixedly connected to the upper rail.

[0010] Preferably, the retaining ring is connected to the screw rod by adhesive bonding or riveting.

[0011] Preferably, the nut bracket assembly includes a nut bracket assembly and a nut bracket reinforcement plate; the nut bracket assembly forms the internal threaded hole and is sleeved on the outside of the screw rod through the internal threaded hole and is located between the two retaining rings; the bottom surface of the nut bracket reinforcement plate is fixedly connected to the lower rail; the nut bracket assembly is screwed and fixed to the nut bracket reinforcement plate; the bottom area of ​​the nut bracket reinforcement plate is larger than the bottom area of ​​the nut bracket assembly.

[0012] Preferably, the nut bracket reinforcement plate is glued or welded to the lower rail.

[0013] Preferably, the transmission mechanism assembly further comprises a rear bracket, which is connected to the screw rod and is located at an end of the screw rod away from the gear box assembly.

[0014] The present invention adopts the above technical solution, so it has the following beneficial effects:

[0015] First, the retaining ring assembly is symmetrically arranged in front and behind the screw rod. During the front and rear collision process, due to the symmetrical front and rear block design, the entire screw rod is subjected to force, part of the screw rod is stretched, and the other part of the screw rod is compressed, so that it can withstand higher collision strength. Secondly, the retaining ring adopts an integrated structure, integrating the front and rear strength support functions into one part, reducing the number of parts and reducing the weight of the device; it can also reduce the assembly process, reduce the impact on the screw rod runout, and improve the sound performance of the slide rail; in addition, it also increases the X-direction travel space. The nut bracket assembly adopts a segmented design. The upper nut bracket assembly supports the nut transmission, and the lower nut bracket reinforcement plate is connected to the lower rail by welding / gluing, which increases the contact area between the nut bracket assembly and the lower rail, ensuring that the lower rail is not squeezed and broken under the front and rear collision conditions, so that the slide rail can withstand higher strength; in addition, the height space of the lower nut bracket is reserved, which is convenient for arranging the bolt features of the lower rail, which is beneficial to the assembly space. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of a high-strength front electric slide rail according to an embodiment of the present invention;

[0017] Figure 2 An exploded view of a high-strength front electric slide rail according to an embodiment of the present invention;

[0018] Figure 3 A cross-sectional view of a high-strength front electric slide rail according to an embodiment of the present invention;

[0019] Figure 4 A schematic diagram of the connection structure of a retaining ring assembly according to an embodiment of the present invention;

[0020] Figure 5 and Figure 6 It is a structural schematic diagram of a retaining ring according to an embodiment of the present invention;

[0021] Figure 7 Schematic diagram of the connection structure of the nut bracket assembly according to an embodiment of the present invention. DETAILED DESCRIPTION

[0022] According to the attached figure Figure 1 to Figure 7 , give the preferred embodiments of the present invention, and describe them in detail so that the functions and features of the present invention can be better understood.

[0023] See also Figure 1 to Figure 3A high-strength front electric slide rail according to an embodiment of the present invention comprises an upper rail 1, a lower rail 2, two retaining frame assemblies 3 and a transmission mechanism assembly 4; the upper rail 1 can be slidably arranged along the lower rail 2 and cooperate with the lower rail 2, the upper rail 1 and the lower rail 2 cooperate to form a retaining frame accommodating space on both sides, and the middle of the upper rail 1 and the lower rail 2 cooperate to form a transmission mechanism accommodating space; the retaining frame assembly 3 is arranged in the retaining frame accommodating space; the transmission mechanism assembly 4 is arranged in the transmission mechanism accommodating space and connects the upper rail 1 and the lower rail 2; the transmission mechanism assembly 4 It includes a gear box assembly 41, a screw rod 42, two retaining ring assemblies 43, a rear bracket 45 and a nut bracket assembly 44; one end of the screw rod 42 is transmission-connected to the gear box assembly 41, and the other end of the screw rod 42 is cooperatively connected to the rear bracket 45; the two ends of the screw rod 42 are respectively connected to a retaining ring assembly 43, and the gear box assembly 41 and the retaining ring assembly 43 are fixed to the upper rail 1; the nut bracket assembly 44 forms an internal threaded hole that cooperates with the screw rod 42, and is sleeved on the outside of the screw rod 42 through the internal threaded hole, and the nut bracket assembly 44 is fixed to the lower rail 2.

[0024] A symmetrically arranged retaining ring assembly 43 is used in front and behind the screw rod 42. During the front and rear collisions, due to the front and rear symmetrical block design, the entire screw rod 42 is subjected to force, a part of the screw rod 42 is stretched, and the other part of the screw rod 42 is compressed, so that it can withstand higher collision intensity.

[0025] See also Figure 4 The retaining ring assembly 43 includes a retaining ring 431 and a screw support 432; the retaining ring 431 is sleeved and fixed on the screw 42; the top of the screw support 432 is fixedly connected to the upper rail 1, and the retaining ring 431 limits the screw support 432 along the axial direction of the screw 42.

[0026] See also Figures 4 to 6 The retaining ring 431 is integrally formed, and a convex ring 4312 is formed at both ends of the retaining ring 431 and an annular groove 4311 is formed in the middle of the retaining ring 431; a recessed portion matching the annular groove 4311 is formed at the lower part of the screw rod bracket 432; the retaining ring 431 can be rotatably passed through the annular groove 4311 and penetrated into the recessed portion; the two convex rings 4312 limit the screw rod bracket 432 along the axial direction of the screw rod 42; the top of the screw rod bracket 432 is fixedly connected to the upper rail 1.

[0027] The retaining ring 431 is connected to the screw rod 42 by adhesive bonding or riveting.

[0028] The structure of the retaining ring 431 is as follows: Figure 5 and Figure 6 As shown, Figure 5 The retaining ring 431 can be fixed to the screw rod 42 by gluing; Figure 6 The retaining ring 431 can be fixed to the screw rod 42 by riveting.

[0029] The retaining ring 431 adopts an integrally formed structure, integrating the originally required forward and backward strength support functions into one part, reducing the number of parts and the weight of the device; it can also reduce the assembly process, reduce the impact on the runout of the screw rod 42, and improve the sound performance of the slide rail; in addition, it also increases the travel space in the X direction.

[0030] See also Figure 3 and Figure 7 The nut bracket assembly 44 includes a nut bracket assembly 441 and a nut bracket reinforcement sheet 442; the nut bracket assembly 441 forms an internal threaded hole and is sleeved on the outside of the screw rod 42 through the internal threaded hole and is located between the two retaining rings 431; the bottom surface of the nut bracket reinforcement sheet 442 is fixedly connected to the lower rail 2; the nut bracket assembly 441 is screwed and fixed to the nut bracket reinforcement sheet 442 through the nut bracket fastening bolts 443; the bottom area of ​​the nut bracket reinforcement sheet 442 is larger than the bottom area of ​​the nut bracket assembly 441.

[0031] The nut bracket reinforcement sheet 442 is glued or welded to the lower rail 2 .

[0032] The nut bracket assembly 44 adopts a segmented design. The upper nut bracket assembly 441 supports the nut transmission, and the lower nut bracket reinforcement plate 442 is connected to the lower rail 2 by welding / gluing, thereby increasing the contact area between the nut bracket assembly 441 and the lower rail 2, ensuring that the lower rail 2 is not squeezed and broken under front and rear collision conditions, thereby enabling the slide rail to withstand higher strength; in addition, a height space for the lower nut bracket is reserved to facilitate the arrangement of bolt features on the lower rail 2, which is beneficial to the assembly space.

[0033] The present invention is described in detail above in conjunction with the embodiments of the accompanying drawings. A person skilled in the art can make various variations of the present invention according to the above description. Therefore, certain details in the embodiments should not constitute a limitation of the present invention, and the scope of protection of the present invention shall be defined by the scope of the attached claims.

Claims

1. A high-strength front electric slide rail, characterized in that: The gear train assembly comprises an upper rail, a lower rail, two retaining rack assemblies and a transmission mechanism assembly; the upper rail can be slidably arranged with the lower rail along the lower rail, and the upper rail and the lower rail cooperate with each other on both sides to form a retaining rack accommodating space, and the upper rail cooperates with the middle part of the lower rail to form a transmission mechanism accommodating space; the retaining rack assembly is arranged in the retaining rack accommodating space; the transmission mechanism assembly is arranged in the transmission mechanism accommodating space and connects the upper rail and the lower rail; the transmission mechanism assembly comprises a gear box assembly, a screw rod, two retaining ring assemblies, a rear bracket and a nut bracket assembly; one end of the screw rod is transmission-connected to the gear box assembly, and the other end of the screw rod is cooperated with the rear bracket; the two ends of the screw rod are symmetrically connected to the retaining ring assembly, and the gear box assembly and the retaining ring assembly are fixed to the upper rail; the nut bracket assembly forms an internal threaded hole that cooperates with the screw rod, and is sleeved on the outside of the screw rod through the internal threaded hole, and the nut bracket assembly is fixed to the lower rail; The retaining ring assembly includes a retaining ring and a screw support; the retaining ring is sleeved and fixed on the screw; the top of the screw support is fixedly connected to the upper rail, and the retaining ring limits the screw support along the axial direction of the screw; The retaining ring is integrally formed, and a convex ring is formed at each end of the retaining ring and an annular groove is formed in the middle of the retaining ring; a recessed portion matching the annular groove is formed at the lower part of the screw rod bracket; the retaining ring can be rotatably passed through the annular groove and inserted into the recessed portion; the two convex rings limit the axial position of the screw rod bracket along the screw rod; the top of the screw rod bracket is fixedly connected to the upper rail.

2. The high-strength front electric slide rail according to claim 1, characterized in that: The retaining ring is connected to the screw rod by adhesive bonding or riveting.

3. The high-strength front electric slide rail according to claim 1, characterized in that: The nut bracket assembly includes a nut bracket assembly and a nut bracket reinforcement plate; the nut bracket assembly forms the internal threaded hole and is sleeved on the outside of the screw rod through the internal threaded hole and is located between the two retaining rings; the bottom surface of the nut bracket reinforcement plate is fixedly connected to the lower rail; the nut bracket assembly is screwed and fixed to the nut bracket reinforcement plate; the bottom area of ​​the nut bracket reinforcement plate is larger than the bottom area of ​​the nut bracket assembly.

4. The high-strength front electric slide rail according to claim 3, characterized in that: The nut bracket reinforcement plate is glued or welded to the lower rail.

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