A new type of slide rail device used on car seats

Abstract

A new type of slide rail device used in car seat, which comprises a slide base, a slide rail and at least two sets of opposite slide assemblies. Each set of the slide assemblies comprises a retainer clamped between the slide base and the slide rail, a plurality of mounting holes on the retainer, and a plurality of slide posts corresponding to each of the mounting holes. The retainer comprises a bottom plate and two bent portions at both ends of the bottom plate. Each of the bent portions comprises a straight portion on the side of the mounting hole facing the slide rail and an arcuate portion opposite to the straight portion. The slide posts are made of plastic material as a whole, which is light in weight, not easy to rust and small in surface friction coefficient. The straight portion is a rectangular hole, which is used to make the abutting portion have a larger space to abut against the slide post. The arcuate portion is used to improve the structural strength of the bent portion, thereby improving its service life.

Description

Technical Field

[0001] This utility model belongs to the field of automotive seat technology, and in particular to a novel slide rail device used in automotive seats. Background Technology

[0002] Car seat rails are an important functional component of car seats. They are installed at the bottom of the car seat to allow for adjustment of the seat's fore-aft position as needed, thereby increasing the comfort of the car seat.

[0003] In existing technologies, most automotive seats are driven by sliding components including ball bearings and ball cage bearings made of hardened steel. However, the lubricant used as grease in the ball bearings may leak during installation and use, causing contamination of the components and resulting in significant inconvenience for users.

[0004] For example, in the utility model patent with publication number CN207670245U, the slide rail is driven to move through the bearing assembly and roller assembly. However, the lubricating grease in the bearing assembly may still leak during the movement, thus contaminating the seat and affecting people's user experience. Summary of the Invention

[0005] In view of this, the present invention provides a novel slide rail device for use in automobile seats to solve the above problems.

[0006] A novel slide rail device for use in automobile seats includes a slide base, a slide rail that engages with the slide base, and two sets of sliding assemblies disposed opposite each other between the slide base and the slide rail. The slide rail includes two opposing flange portions. Each flange portion includes a fixing portion and two opposing abutment portions located at both ends of the fixing portion. Each sliding assembly includes a retainer clamped between the slide base and the slide rail, a plurality of mounting holes on the retainer, and a plurality of sliding posts located in each mounting hole. The retainer includes a base plate and two bends located at both ends of the base plate. Each bend includes a straight portion on the side of the mounting hole facing the slide rail, an arc portion on the side of the mounting hole facing the slide base, and two slots on opposite sides of the mounting hole for engaging the sliding posts. The straight portion is a rectangular hole through which the abutment portions pass to abut against the sliding posts. The arc portion increases the thickness of the bend, thereby improving the structural strength of the bend. The slot includes a guide surface connected to the straight portion and a stop surface connected to the curved portion. Both the guide surface and the stop surface are curved surfaces, with the curvature of the guide surface being smaller than that of the stop surface. The guide surface guides the sliding post into the slot, and the stop surface abuts against the sliding post to prevent it from detaching from the stop surface. The two ends of the sliding post are abutted by the mounting holes, and the side walls are abutted by the slide block and the stop surface. The sliding post is integrally formed from a wear-resistant and lubricating material.

[0007] Furthermore, the slide includes a base, two first sidewalls extending from both ends of the base and disposed opposite to each other, and two covering portions connected to the two first sidewalls and disposed opposite to each other. The first sidewalls are located between the base and the covering portions. One end of the first sidewall is connected to the base and the other end is connected to the covering portion. The slide is integrally formed by a bending process.

[0008] Furthermore, the slide rail also includes a slide rail seat and two second sidewalls extending from both ends of the slide rail seat and arranged opposite to each other. The two flange portions are respectively connected to the two second sidewalls and arranged opposite to each other. The second sidewalls are located between the slide rail seat and the flange portions. One end of the second sidewall is connected to the slide rail seat, and the other end is connected to the flange portion.

[0009] Furthermore, the slide is made of metal.

[0010] Furthermore, the slide rail is made of metal.

[0011] Furthermore, the fixing part includes at least one fixing through hole disposed on the fixing part.

[0012] Furthermore, the base plate includes at least one fixing protrusion located on the base plate, and the fixing protrusion and the fixing through hole are correspondingly arranged.

[0013] Furthermore, the fixing protrusion also includes two guide portions located at both ends of the fixing protrusion, and two abutment portions respectively connected to the guide portions.

[0014] Furthermore, the size and shape of the fixing protrusion are adapted to the fixing through hole.

[0015] Furthermore, the sliding column is made entirely of PTFE, POM, PA, PEEK, and UHMWPE engineering plastics, and is manufactured using injection molding.

[0016] Compared with existing technologies, this utility model provides a novel slide rail device for automobile seats. The rectangular straight section provides a larger contact space for the abutment to abut the sliding column, while the curved section increases the thickness of the bent section, thereby improving the structural strength of the bent section and thus extending the overall service life. Furthermore, the sliding column, made entirely of engineering plastics such as PTFE, POM, PA, PEEK, and UHMWPE or modified composite materials, is lightweight, effectively reducing the weight of the slide rail device and lowering the coefficient of friction on its surface. This reduces friction between the sliding column and the slide rail during relative movement, making the sliding column more wear-resistant. Moreover, the plastic material used in the sliding column prevents rust and corrosion compared to traditional metal materials, significantly extending the service life of the slide rail device and improving the user experience. The sliding column can be manufactured by simultaneous extrusion molding followed by cutting or direct injection molding, which is convenient and cost-effective, improving production efficiency and economic benefits, and is suitable for mass production. Furthermore, after the sliding column enters the mounting hole through the straight section, both ends are abutted by the mounting hole, and the side walls are clamped and fixed by the slide block and the abutting part, making the connection reliable. This prevents the sliding column from falling out of the retainer during installation and transportation, and will not affect subsequent normal use. Attached Figure Description

[0017] Figure 1 A schematic diagram of the structure of a novel slide rail device for use in car seats provided by this utility model. Figure 2 for Figure 1 An exploded view of the new sliding rail device used in car seats.

[0018] Figure 3 for Figure 2 An exploded view of the new sliding rail device used in car seats from another direction.

[0019] Figure 4 for Figure 2 A schematic diagram of the cage structure of a new type of sliding rail device used in car seats.

[0020] Figure 5 for Figure 4 A schematic diagram of the cage structure in another direction of the new sliding rail device used in car seats.

[0021] Figure 6 for Figure 5 A cross-sectional schematic diagram of the cage of a new type of sliding rail device used in car seats. Detailed Implementation

[0022] The specific embodiments of this utility model are described in further detail below. It should be understood that the description of the embodiments of this utility model herein is not intended to limit the scope of protection of this utility model.

[0023] like Figures 1 to 6 The diagram shows a structural schematic of a novel slide rail device for use in car seats according to this utility model. The novel slide rail device for car seats includes a slide base 10, a slide rail 20 that engages with the slide base 10, and at least two sets of sliding components 30 arranged opposite to each other and located between the slide base 10 and the slide rail 20. The novel slide rail device for car seats also includes other functional modules, such as a drive mechanism, sliders, assembly components, etc., which are technologies known to those skilled in the art and will not be described in detail here.

[0024] like Figure 1 As shown, the slide 10 includes a base 11, two first sidewalls 12 extending from both ends of the base 11 and disposed opposite to each other, and two covering portions 13 connected to the two first sidewalls 12 and disposed opposite to each other. The slide 10 can be integrally formed from sheet metal through a bending process. To ensure the load-bearing strength of the slide 10, the slide 10 is made of metal material.

[0025] The base 11 is used to support the first sidewall 12 and the covering part 13, and it can be a long strip plate.

[0026] The first sidewall 12 is located between the base 11 and the covering part 13, with one end connected to the base 11 and the other end connected to the covering part 13. In the cross-section of the arrangement direction of the slide block 10 and the slide rail 20, the first sidewall 12 is perpendicular to the base 11, and the connection between the two is bent.

[0027] The two covering portions 13 have the same structure and are arranged opposite to each other. In a cross-section along the arrangement direction of the slide block 10 and the slide rail 20, the covering portion 13 is parallel to the base 11 and perpendicular to the first sidewall 12, that is, the first sidewall 12 is perpendicular to the base 11 and the covering portion 13. The connection portion between the covering portion 13 and the first sidewall 12 is bent.

[0028] like Figure 2 As shown, the slide rail 20 includes a slide rail base 21, two second sidewalls 22 extending from both ends of the slide rail base 21 and arranged opposite each other, and two flange portions 23 connected to the two second sidewalls 22 and arranged opposite each other. The slide rail 20 can be integrally formed from sheet metal through a bending process. The extension direction and extension length of the slide rail 20 and the slide base 10 are the same. To ensure the load-bearing strength of the slide rail 20, the slide rail 20 is made of metal material.

[0029] The slide rail seat 21 is used to support the second sidewall 22 and the flange portion 23, and it can be an elongated plate. In the cross-section of the arrangement direction of the slide seat 10 and the slide rail 20, the slide rail seat 21 is parallel to the base 11.

[0030] The second sidewall 22 is located between the slide rail seat 21 and the flange portion 23, with one end connected to the slide rail seat 21 and the other end connected to the flange portion 23. In the cross-section of the arrangement direction of the slide seat 10 and the slide rail 20, the second sidewall 22 is perpendicular to the slide rail seat 21 and parallel to the first sidewall 12, and is bent at the connection between the two.

[0031] like Figure 3 As shown, the two flange portions 23 have the same structure and are disposed opposite to each other. The flange portion 23 is used to cooperate with the first sidewall 12 to abut against the sliding assembly 30, and includes a fixing portion 231 and two abutment portions 232 located at both ends of the fixing portion 231 and disposed opposite to each other. The flange portion 23 is connected to one end of the second sidewall 22, and the connection portion between the two is bent.

[0032] The fixing part 231 is used to connect and fix the slide rail 20 to the sliding assembly 30, and includes at least one fixing through hole 2311 provided on the fixing part 231. The fixing through hole 2311 is used to cooperate with the fixing protrusion 313 described below to fix the sliding assembly 30 to the slide rail 20. Its specific working principle will be described below in conjunction with the fixing protrusion 313. The number of fixing through holes 2311 can be set according to actual needs. In this embodiment, the number of fixing through holes 2311 on each fixing part 231 is two. The fixing part 231 can be a long strip plate for supporting the abutment top 232.

[0033] Both abutment tops 232 have the same function and structure. The abutment top 232 is used to cooperate with the slide block 10 to abut and fix the sliding assembly 30. It is bent at a certain angle to the fixing part 231. This bending angle must be able to abut the sliding assembly 30. Therefore, the minimum distance between the abutment top 232 and the slide block 10 should be less than the diameter of the sliding post 33 of the sliding assembly 30, so that the abutment top 232 will have a certain deformation. Then, the deformation elasticity is used to abut the sliding post 33 against the slide block 10, thereby preventing the sliding post 33 from loosening.

[0034] The slide seat 10 and the slide rail 20 are respectively connected to the seat body (not shown) and the vehicle body (not shown) of the car. The slide rail 20 can slide freely on the slide seat 10, so that the position of the slide seat 10 and / or the slide rail 20 can be moved according to the actual needs of the person during use to adjust the relative position of the seat body (not shown) and the vehicle body (not shown), thereby adjusting the position of the seat.

[0035] like Figure 4 As shown, the two sets of sliding components 30 have the same structure and function; only one of them will be briefly described here. It is conceivable that, since the slide rail 20 is typically quite long, multiple sets of sliding components 30, such as four or six sets, will be provided on a single slide rail 20. In this embodiment, only to illustrate the structure and working principle of the present invention, two sets of sliding components 30 are used as an example.

[0036] The sliding assembly 30 includes a retainer 31 sandwiched between the slide block 10 and the slide rail 20, a plurality of mounting holes 32 located on the retainer 31, and a plurality of sliding posts 33 located in the mounting holes 32.

[0037] like Figure 5As shown, the retainer 31 is used to support the sliding column 33 and is sandwiched between the flange portion 23 and the first sidewall 12. The retainer 31 includes a base plate 311 and two bent portions 312 located at both ends of the base plate 311.

[0038] At least one fixing protrusion 313 is provided on the base plate 311. The base plate 311 and the bending part 312 can be integrally formed by injection molding, and it can be a rectangular plate.

[0039] The fixing protrusion 313 is used to cooperate with the fixing through hole 2311 to assemble the retainer 31 onto the slide rail 20, thereby fixing the sliding assembly 30 relative to the slide rail 20. The number of fixing protrusions 313 is determined by the number of fixing through holes 2311. In this embodiment, there are two fixing protrusions 313 on each base plate 311. The fixing protrusion 313 can be a plug-in protrusion. The fixing protrusion 313 and the retainer 31 can be integrally formed by injection molding. The fixing protrusion 313 also includes two guide portions 3131 located at both ends of the fixing protrusion 313, and two abutment joints 3132 respectively connected to the guide portions 3131.

[0040] The guide portion 3131 is used to guide the retainer 31 when the retainer 31 is fixed on the slide 10.

[0041] like Figure 6 As shown, the two bent portions 312 are respectively located within the bending gap space formed by the flange portion 23, the covering portion 13, and the base 11. The mounting hole 32 and the sliding post 33 are located on the bent portion 312, and the bent portion 312 is used to determine the positions of the mounting hole 32 and the sliding post 33. In a cross-section perpendicular to the arrangement direction of the slide rail 20 and the sliding assembly 30, the bent portion 312 includes a straight portion 3121 located on the side of the mounting hole 32 facing the slide rail 20, an arc portion 3122 located on the side of the mounting hole 32 facing the slide block 10, and two slots 3123 located on opposite sides of the mounting hole 32 for engaging the sliding post 33.

[0042] The straight section 3121 is located on the side of the bent section 312 facing the slide rail 20, thus forming a rectangular hole. The length of the shorter side of this rectangular hole is less than the radius of the sliding post 33, so that when the sliding post 33 is inserted into the mounting hole 32 from the straight section 3121, the sliding post 33 will deform to a certain extent, and this deformation elasticity will allow the sliding post 33 to engage with the mounting hole 32. Due to the presence of the straight section 3121, a plane is formed on the side of the bent section 312 facing the slide rail 20. This facilitates cooperation with the abutment 232, ensuring that even if the abutment 232 pushes the sliding post 33 against the slide block 10, it will not interfere with the sliding post 33; that is, the abutment 232 has more space to abut the sliding post 33.

[0043] The curved portion 3122 is located on the side of the bent portion 312 facing the slide block 10 and is opposite to the straight portion 3121. The curved portion 3122 can be an arc, and the central angle of the arc is less than 180 degrees. When the sliding post 33 is inserted from the straight portion 3121 into the mounting hole 32, one side extends out from the curved portion 3122 and is engaged in the curved portion 3122. Because the central angle of the curved portion 3122 is less than 180 degrees, the sliding post 33 extends out of the mounting hole 32 and contacts the slide block 10. At the same time, due to the presence of the curved portion 3122, the thickness of the bent portion 312 is larger, thereby improving the strength of the bent portion 312 and preventing deformation under the pressure of the sliding post 33 during sliding, thus helping to improve the service life of the overall structure.

[0044] The slot 3123 is used to engage the sliding post 33, with one end connected to the straight portion 3121 and the other end connected to the curved portion 3122. The slot 3123 includes a guide surface 3124 connected to the straight portion 3121 and a top surface 3125 connected to the curved portion 3122.

[0045] The guide surface 3124 is used to guide the sliding post 33 into the mounting hole 32, and it is an arc-shaped surface with a small curvature.

[0046] The abutting surface 3125 is used to abut the sliding post 33, and it is an arc-shaped surface with a large curvature. The two arc-shaped surfaces are arranged opposite each other to form an arc-shaped gripper to abut and fix the sliding post 33 to prevent the sliding post 33 from leaving the mounting hole 32 from the abutting surface 3125.

[0047] During installation, simply insert the sliding post 33 into the mounting hole 32 from the guide surface 3124. During disassembly, simply push the sliding post 33 along the guide surface 3124 by hand. Since the retainer 31 is fixed to the slide rail 20, one side of the sliding post 33 is abutted by the abutment surface 3125, and the other side is abutted by the slide rail 20, thus securing the sliding post 33 and preventing it from falling off. The slot 3123 not only ensures the stable connection of the sliding post 33 but also facilitates installation and disassembly, making it highly practical.

[0048] The mounting hole 32 is used to install the sliding column 33, and it can be a rectangular hole. The number of mounting holes 32 can be set according to actual needs. In this embodiment, each bent portion 312 has two mounting holes 32, and the two mounting holes 32 on the same side of the bent portion 312 are spaced apart. The straight portion 3121 and the curved portion 3122 are located on both sides of the opening of the mounting hole 32.

[0049] The sliding post 33 is used to allow the slide rail 20 to move freely relative to the slide block 10, and it is located in the mounting hole 32. The sliding post 33 can be a cylinder, the size and shape of which are adapted to the size and shape of the mounting hole 32. Both ends of the sliding post 33 are abutted by the mounting hole 32, one side wall is abutted by the abutment top 232, and the other side wall is abutted by the slide block 10, thereby limiting and fixing the sliding post 33 in the retainer 31. The sliding post 33 is made entirely of plastic material, and in order to ensure the load-bearing capacity of the sliding post 33, the sliding post 33 is made of engineering plastics or modified composite materials such as PTFE, POM, PA, PEEK, and UHMWPE with a hardness ≥55D and a continuous operating temperature ≥80℃. The sliding column 33 is not only lightweight, effectively reducing the weight of the slide rail device, but also has a lower coefficient of friction on its surface. This reduces the friction between the slide block 10 and the slide rail 20 and their surfaces, making the sliding column 33 more wear-resistant. Furthermore, because the sliding column 33 is made of plastic, it will not rust or corrode like traditional metal materials, thus greatly extending the service life of the slide rail device and improving the user experience.

[0050] The sliding column 33 can be integrally extruded and then cut, or directly integrally molded through injection molding. This not only makes it easy to manufacture and reduces costs, but also effectively improves the production efficiency and economic benefits of enterprises, making it suitable for mass production. Furthermore, the sliding column 34 is securely fixed in the mounting hole 32, preventing it from falling out of the retainer 31 during installation and handling, thus ensuring normal subsequent use.

[0051] During assembly, the sliding column 33 can be first pressed into the mounting hole 32 from the straight portion 3121. Then, the fixing protrusion 313 is inserted into the fixing through hole 2311 along the guide portion 3131. At this time, the retainer 31 fits against the slide rail 20, and the abutment 3132 passes through the fixing through hole 2311 and abuts against the second side wall 22 to limit the slide rail 20, thereby fixing the retainer 31 on the slide rail 20. Next, the slide block 10 is sleeved on the retainer 31, and the slide rail 20 is slid and translated until the two ends of the slide rail 20 are flush with the two ends of the slide block 10. At this time, the two ends of the sliding column 33 are abutted by the mounting hole 32, and the two side walls are clamped and fixed by the slide block 10 and the abutment portion 232, thereby installing and fixing the sliding column 33 between the slide block 10 and the slide rail 20.

[0052] Compared with existing technologies, the novel slide rail device for automobile seats provided by this utility model provides a larger contact space for the abutment top 232 to abut the sliding column 33 through the rectangular straight portion 3121, and increases the thickness of the bending portion 312 through the arc portion 3122, thereby improving the structural strength of the bending portion 312 and thus improving the overall service life. Furthermore, the sliding column 33, made entirely of engineering plastics such as PTFE, POM, PA, PEEK, and UHMWPE or modified composite materials, is not only lightweight, effectively reducing the weight of the slide rail device, but also has a lower coefficient of friction on its surface. This reduces the friction between the sliding column 33 and the slide rail 20 when they move relative to each other, making the sliding column 33 more wear-resistant. Moreover, the sliding column 33, made entirely of plastic materials, will not rust or corrode compared to traditional metal materials, thus greatly improving the service life of the slide rail device and enhancing the user experience. The sliding column 33 is manufactured by simultaneous extrusion molding followed by cutting or direct injection molding, which is not only convenient and inexpensive to produce, but also effectively improves the production efficiency and economic benefits of enterprises, making it suitable for mass production. Furthermore, after the sliding column 33 enters the mounting hole 32 through the straight section 3121, both ends are abutted by the mounting hole 32, and the side walls are clamped and fixed by the slide block 10 and the abutment part 232, ensuring a secure connection. This prevents the sliding column 33 from falling out of the retainer 31 during installation and transportation, thus ensuring normal subsequent use.

[0053] The above are merely preferred embodiments of the present utility model and are not intended to limit the scope of protection of the present utility model. Any modifications, equivalent substitutions or improvements within the spirit of the present utility model are covered within the scope of the claims of the present utility model.

Claims

1. A novel slide rail device for use in automobile seats, characterized in that: The novel slide rail device for use in automobile seats includes a slide base, a slide rail that engages with the slide base, and two sets of sliding assemblies disposed opposite each other between the slide base and the slide rail. The slide rail includes two opposing flanges, each flange including a fixing portion and two opposing abutments located at both ends of the fixing portion. Each sliding assembly includes a retainer clamped between the slide base and the slide rail, a plurality of mounting holes on the retainer, and a plurality of sliding posts in each mounting hole. The retainer includes a base plate and two bent portions located at both ends of the base plate. Each bent portion includes a straight portion on the side of the mounting hole facing the slide rail, an arc portion on the side of the mounting hole facing the slide base, and two... A slot is located on both sides of the mounting hole and is used to engage the sliding column. The straight portion is a rectangular hole through which the abutment passes to abut the sliding column. The curved portion is used to increase the thickness of the bent portion, thereby improving the structural strength of the bent portion. The slot includes a guide surface connected to the straight portion and an abutment surface connected to the curved portion. Both the guide surface and the abutment surface are curved surfaces, and the curvature of the guide surface is smaller than that of the abutment surface. The guide surface is used to guide the sliding column into the slot, and the abutment surface is used to abut the sliding column to prevent the sliding column from falling off the abutment surface. The two ends of the sliding column are abutted by the mounting hole, and the two side walls are abutted by the slide block and the abutment. The sliding column is integrally formed from wear-resistant and lubricating material.

2. The novel slide rail device for use in automobile seats as described in claim 1, characterized in that: The slide includes a base, two first sidewalls extending from both ends of the base and arranged opposite each other, and two covering portions connected to the two first sidewalls and arranged opposite each other. The first sidewalls are located between the base and the covering portions. One end of the first sidewall is connected to the base and the other end is connected to the covering portion. The slide is integrally formed by bending process.

3. The novel slide rail device for use in automobile seats as described in claim 1, characterized in that: The slide rail also includes a slide rail seat and two second sidewalls that extend from both ends of the slide rail seat and are disposed opposite to each other. The two flange portions are respectively connected to the two second sidewalls and disposed opposite to each other. The second sidewalls are located between the slide rail seat and the flange portions. One end of the second sidewall is connected to the slide rail seat and the other end is connected to the flange portion.

4. The novel slide rail device for use in automobile seats as described in claim 1, characterized in that: The slide is made of metal.

5. The novel slide rail device for use in automobile seats as described in claim 1, characterized in that: The slide rail is made of metal.

6. The novel slide rail device for use in automobile seats as described in claim 1, characterized in that: The fixing part includes at least one fixing through hole provided on the fixing part.

7. The novel slide rail device for use in automobile seats as described in claim 6, characterized in that: The base plate includes at least one fixing protrusion located on the base plate, and the fixing protrusion and the fixing through hole are correspondingly arranged.

8. The novel slide rail device for use in automobile seats as described in claim 7, characterized in that: The fixing protrusion also includes two guide portions located at both ends of the fixing protrusion, and two abutment portions respectively connected to the guide portions.

9. The novel slide rail device for use in automobile seats as described in claim 7, characterized in that: The size and shape of the fixing protrusion are adapted to the fixing through hole.

10. The novel slide rail device for use in automobile seats as described in claim 1, characterized in that: The sliding column is manufactured using an injection molding process.

Images