Upper rail sliding supporting structure

Abstract

The utility model discloses an upper rail sliding supporting structure which comprises a lower rail and an upper rail assembled in the lower rail in a sliding mode, outward turning structures are arranged on the two sides of the upper rail, inward turning structures are arranged on the two sides of the lower rail, the upper portions of the outward turning structures are enclosed in the inward turning structures, sliding blocks are arranged between the outward turning structures and the lower rail, and the lower portions of the outward turning structures are fixedly supported on the sliding blocks. The sliding block can freely slide relative to the lower rail; the sliding block is further provided with an elastic element, and force applied by the elastic element can enable the sliding block to be tightly installed between the outward turning structure and the inner side of the lower rail. The utility model has the beneficial effects that the stable assembly between the upper rail and the lower rail can be ensured only through the combination of the sliding block and the elastic element, so that the production cost is greatly reduced, and the tool difficulty is also reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile seats, in particular to an upper rail sliding support structure. Background Art

[0002] Car seats are generally equipped with slide rails at the bottom to adjust the seats forward and backward to ensure that the passengers have enough space.

[0003] In the prior art, the bottom rail of the car seat is relatively short. For some commercial vehicles, a long-stroke rail is used to ensure sufficient sliding space. Since the seats are installed on the upper rail, which is much shorter than the lower rail, a support structure is generally required to be installed between the upper and lower rails to ensure that the seats do not shake when sliding.

[0004] The existing long rail support structure is mostly supported by bearings, and the spring force is applied to the bearings to absorb the gap to ensure that the rail is tightly assembled. In the specific implementation process, an external bracket needs to be installed on the upper rail to apply spring force to the bearing. The structure and process are relatively complex and the production cost is high. In addition, the bearing is rolling friction during rotation, and the friction resistance is small. The car seat itself is heavy. Under vibration conditions, the longitudinal movement load of the seat is large. Since all longitudinal movements need to be suppressed by the gearbox, and the gearbox is flexibly connected to the upper rail, the resistance it can provide is limited. At the same time, the clearance control of the gearbox itself has great process difficulty and is difficult to further reduce. Therefore, there is a certain probability of abnormal vibration and noise during road tests. Utility Model Content

[0005] In view of this, the utility model provides an upper rail sliding support structure, aiming to achieve sliding support of the upper rail in a simpler way.

[0006] To achieve the above purpose, the technical solution of the utility model is as follows:

[0007] An upper rail sliding support structure comprises a lower rail and an upper rail slidably assembled in the lower rail, the upper rail is provided with outward-turned structures on both sides, the lower rail is provided with inward-turned structures on both sides, the upper part of the outward-turned structure is enclosed in the inward-turned structure, and is characterized in that: a sliding block is provided between the outward-turned structure and the lower rail, the lower part of the outward-turned structure is fixedly supported on the sliding block, and the sliding block can slide freely relative to the lower rail; an elastic element is provided on the sliding block, and the force exerted by the elastic element can enable the sliding block to be tightly installed between the outward-turned structure and the inner side of the lower rail.

[0008] With the above structure, stable installation between the upper and lower rails is achieved through the slider and the elastic element, and the overall structure is very simple.

[0009] Preferably, four sliders are arranged between the outward-turned structure and the lower rail, and the four sliders are arranged in a rectangular shape on both sides of the upper rail. The above structure can ensure that the structure between the upper rail and the lower rail is more stable.

[0010] Preferably, the slider is in a "C" shape, the inner side of the slider is used to engage the outward-turned structure, and the outer side, bottom and top surfaces of the slider are all slidably fitted to the inner surface of the lower rail. The above structure can ensure that the upper rail is stably supported on the slider and slides on the lower rail through the slider.

[0011] Preferably, the lower part of the slider is provided with a thickened portion protruding toward the middle of the lower rail, the outward-turned structure is supported on the thickened portion, the top surface of the thickened portion is provided with a limiting protrusion, and the outward-turned structure is provided with a positioning hole matching the limiting protrusion. The above structure can ensure that the upper rail is fixedly installed on the slider.

[0012] Preferably, the upper part of the slider is provided with an intermediate deformation block and end deformation blocks at both ends of the intermediate deformation block, the elastic element is a spring sheet, the middle part of the spring sheet is supported on the outside of the intermediate deformation block, and the two ends are respectively supported on the inside of the two groups of end deformation blocks, under the action of the spring sheet, the intermediate deformation block and the two groups of end deformation blocks can both be elastically deformed, so that the intermediate deformation block can fit on the outside of the outward-turned structure, and the end deformation blocks can fit on the inside of the lower rail. With the above structure, the end deformation blocks can be lifted upward and abut against the lower bottom surface of the inward-turned structure, and the intermediate deformation blocks can be pressed downward and closely abut against the top surface of the outward-turned structure, so that the longitudinal gap between the upper and lower rails can be eliminated.

[0013] As a preferred embodiment, a limiting baffle is further provided on the middle deformation block, and a limiting groove adapted to the spring piece is provided at the bottom of the end deformation block. The above structure can ensure the stable installation of the spring piece.

[0014] As a preferred embodiment, a weakened notch is provided between the middle deformation block and the end deformation blocks at both ends. With the above structure, the middle deformation block and the end deformation block are easier to deform.

[0015] Preferably, both sides of the thickened portion are provided with weight-reducing grooves distributed in an array. The above structure can reduce the weight of the slider, reduce the production cost of the slider, and also reduce the friction coefficient of the slider, making it easier for the slider to slide relative to the lower rail.

[0016] As a preference, the sliding block is made of plastic material. The above structure is not only low in cost, but also can effectively prevent the lower rail from being worn due to long-term sliding.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] 1. The upper rail sliding support structure provided by the utility model is adopted, and the upper rail is supported by the provided slider, and the outward-turning structure, the slider and the inward-turning structure are tightly fitted by the elastic element, thereby eliminating the installation gap between the upper and lower rails.

[0019] 2. The limit protrusions on the slider cooperate with the positioning holes on the upper rail, making the installation of the slider very simple. In addition, the slider and the spring are inexpensive, which greatly reduces the assembly cost.

[0020] 3. The movement of the slider relative to the lower rail is sliding friction, and the sliding resistance is large, which can effectively suppress the longitudinal movement of the upper rail. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the upper rail sliding support structure;

[0022] Figure 2 It is a structural schematic diagram of the inner side of the slider 3;

[0023] Figure 3 It is a structural schematic diagram of the outer side of the slider 3;

[0024] Figure 4 It is a schematic diagram of the assembly of the slider 3 and the elastic element 4;

[0025] Figure 5 It is a schematic diagram of the assembly of the slider 3 and the upper rail 1;

[0026] Figure 6 It is a schematic diagram of the layout of the slider 3. DETAILED DESCRIPTION

[0027] The utility model is further described below in conjunction with embodiments and drawings.

[0028] like Figure 1 As shown, an upper rail sliding support structure includes a lower rail 2 and an upper rail 1 slidably assembled in the lower rail 2, wherein an outward turning mechanism 1a is formed on both sides of the upper rail 1, and an inward turning structure 2a is formed on both sides of the lower rail 2, and the upper part of the outward turning mechanism 1a is enclosed in the inward turning structure 2a to ensure that the upper and lower rails will not be separated longitudinally. In this embodiment, a slider 3 is installed between the outward turning structure 1a and the lower rail 2, and the lower part of the outward turning structure 1a is fixedly supported on the slider 3, and the slider 3 can slide freely relative to the lower rail 2. An elastic element 4 is also installed on the slider 3, and the force applied by the elastic element 4 can enable the slider 3 to be tightly installed between the outward turning structure 1a and the inner side of the lower rail 2.

[0029] With such a design, the upper rail 1 is supported by the installed slider 3, and the installation gap between the upper rail 1 and the lower rail 2 is eliminated by the elastic element 4, and the overall structure is very simple.

[0030] In this embodiment, four sliders 3 are installed between the outward turning structure 1a and the lower rail 2. Figure 6 , four slide blocks 3 are arranged in a rectangular shape on both sides of the upper rail 1. In this way, the upper rail 1 is stably supported on the lower rail 2.

[0031] like Figures 1 to 3 As shown, the slider 3 is in a "C" shape as a whole, the inner side of the slider 3 is used to clamp the outward-turned structure 1a, and the outer side, bottom edge and top surface of the slider 3 are all slidably fitted to the inner surface of the lower rail 2. In this way, the upper rail 1 is stably supported and the slider 3 has a sufficient sliding contact surface. In this embodiment, there is sliding friction between the slide rail 3 and the lower rail 2, and its lateral sliding friction resistance is large, which can effectively suppress the longitudinal movement of the slide rail 3 and the longitudinal movement of the upper rail 1.

[0032] like Figure 2 and Figure 3 As shown, the lower part of the slider 3 is formed with a thickened portion 3a protruding toward the middle of the lower rail 2. The thickened portion 3a is used to support the outward-turned structure 1a. A limiting protrusion 3a1 is formed on the top surface of the thickened portion 3a. A positioning hole 1b is opened at the position of the outward-turned structure 1a corresponding to the limiting protrusion 3a1. The limiting protrusion 3a1 can be inserted into the positioning hole 1b so that the upper rail 1 is stably supported on the slider 3. There are also array-distributed weight-reducing grooves 3a2 on both sides of the thickened portion 3a. The weight-reducing grooves 3a2 can effectively reduce the weight of the slider 3, thereby reducing the production cost of the slider 3. In addition, the weight-reducing grooves 3a2 can also reduce the friction coefficient of the slider 3, ensuring that the slider 3 is easier to slide on the lower rail 2.

[0033] Further, such as Figure 4 As shown, a limiting portion 3b is formed on the upper part of the slider 3, and the limiting portion 3b is used to place the elastic element 4. In this embodiment, the elastic element 4 is a spring sheet, and the limiting portion 3b includes a middle deformation block 3b1 and end deformation blocks 3b2 located at both ends of the middle deformation block 3b1. The middle part of the spring sheet is supported on the outside of the middle deformation block 3b1, and the two ends of the spring sheet are respectively supported on the inner sides of the two end deformation blocks 3b2. Under the action of the spring sheet, the middle deformation block 3b1 and the two groups of end deformation blocks 3b2 can all undergo elastic deformation, so that the middle deformation block 3b1 can fit on the outside of the outward-turned structure 1a, and the end deformation blocks 3b2 can fit on the inner surface of the lower rail 2, thereby playing a role in eliminating the longitudinal gap between the upper rail 1 and the lower rail 2.

[0034] Specifically, a limiting baffle 3b3 is formed on the middle deformation block 3b1, and a limiting groove 3b4 adapted to the spring piece is opened at the bottom of the end deformation block 3b2, so as to ensure that the spring piece can be stably installed on the limiting portion 3b.

[0035] In order to ensure that the middle deformation block 3b1 and the end deformation blocks 3b2 can deform better, in this embodiment, weakened notches 3b5 are provided between the middle deformation block 3b1 and the end deformation blocks 3b2 at both ends.

[0036] In this embodiment, the slider 3 is a plastic part, which not only has low processing costs, but also is more likely to deform the middle deformation block 3b1 and the end deformation block 3b2 under the influence of the spring sheet, so that the longitudinal gap between the upper rail 1 and the lower rail 2 can be eliminated; in addition, since it is a plastic part, the friction between the slider 3 and the lower rail 2 causes little damage to the lower rail 2.

[0037] Finally, it should be noted that the above description is only a preferred embodiment of the present invention. Under the guidance of the present invention, ordinary technicians in this field can make a variety of similar expressions without violating the purpose and claims of the present invention, and such changes fall within the scope of protection of the present invention.

Claims

1. An upper rail sliding support structure, comprising a lower rail (2) and an upper rail (1) slidably assembled in the lower rail (2), wherein both sides of the upper rail (1) are provided with outward-turning structures (1a), and both sides of the lower rail (2) are provided with inward-turning structures (2a), and the upper part of the outward-turning structure (1a) is enclosed in the inward-turning structure (2a), characterized in that: A sliding block (3) is provided between the outward-turned structure (1a) and the lower rail (2); the lower portion of the outward-turned structure (1a) is fixedly supported on the sliding block (3); and the sliding block (3) is capable of sliding freely relative to the lower rail (2); The slider (3) is provided with an elastic element (4), and the force exerted by the elastic element (4) can enable the slider (3) to be tightly mounted between the outward-turned structure (1a) and the inner side of the lower rail (2).

2. The upper rail sliding support structure according to claim 1, characterized in that: Four sliding blocks (3) are provided between the outward-turning structure (1a) and the lower rail (2), and the four sliding blocks (3) are arranged in a rectangular shape on both sides of the upper rail (1).

3. The upper rail sliding support structure according to claim 1, characterized in that: The slider (3) is of a "C"-shaped structure; the inner side surface of the slider (3) is used to engage the outward-turned structure (1a); the outer side surface, bottom surface and top surface of the slider (3) are all slidably fitted to the inner surface of the lower rail (2).

4. The upper rail sliding support structure according to claim 1, characterized in that: The lower part of the slide block (3) is provided with a thickened portion (3a) protruding toward the middle of the lower rail (2); the outward-turned structure (1a) is supported on the thickened portion (3a); a limiting protrusion (3a1) is provided on the top surface of the thickened portion (3a); and the outward-turned structure (1a) is provided with a positioning hole (1b) matching the limiting protrusion (3a1).

5. The upper rail sliding support structure according to claim 1, characterized in that: The upper portion of the slider (3) is provided with an intermediate deformation block (3b1) and end deformation blocks (3b2) located at both ends of the intermediate deformation block (3b1); the elastic element (4) is a spring sheet, the middle portion of which is supported on the outside of the intermediate deformation block (3b1), and the two ends of which are respectively supported on the inside of the two groups of end deformation blocks (3b2); under the action of the spring sheet, the intermediate deformation block (3b1) and the two groups of end deformation blocks (3b2) can both undergo elastic deformation, so that the intermediate deformation block (3b1) can fit on the outside of the outward-turned structure (1a), and the end deformation blocks (3b2) can fit on the inside of the lower rail (2).

6. The upper rail sliding support structure according to claim 5, characterized in that: A limiting baffle (3b3) is also provided on the middle deformation block (3b1), and a limiting groove (3b4) adapted to the spring sheet is provided at the bottom of the end deformation block (3b2).

7. The upper rail sliding support structure according to claim 5, characterized in that: A weakened notch (3b5) is provided between the middle deformation block (3b1) and the end deformation blocks (3b2) at both ends.

8. The upper rail sliding support structure according to claim 4, characterized in that: Both sides of the thickened portion (3a) are provided with weight-reducing grooves (3a2) distributed in an array.

9. The upper rail sliding support structure according to claim 1, characterized in that: The sliding block (3) is made of plastic.

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