A fixing and positioning device for long slide rails

Abstract

The utility model relates to a kind of fixing and positioning device for long slide rail, including lower rail, and positioning support mechanism is equipped in lower rail;Positioning support mechanism includes screw and positioning assembly, transmission sheet is equipped between the two;Positioning assembly includes the positioning pin shell fixedly installed in lower rail, positioning pin cavity is equipped in positioning pin shell, positioning pin is slidably equipped in positioning pin cavity, and elastic element is equipped between the top of positioning pin and positioning pin shell;Lower rail pin hole is equipped on lower rail, and lower rail pin hole is located below positioning pin;Positioning pin middle part is equipped with baffle flange;The lower part of transmission sheet is bottom plate, and bottom plate through-hole is equipped on bottom plate, and bottom plate slides in lower rail, and the upper part of transmission sheet is limit plugboard, and limit plugboard end portion both sides are equipped with insertion strip, and both sides insertion strip are positioning pin avoidance slot between;Between bottom plate and limit plugboard, it is vertical board.The utility model can solve the problem of insufficient strength in the middle of long slide rail caused by installation at both ends, and mushroom nail cooperation hole slot strengthens the rigidity of lower rail middle part.

Description

Technical Field

[0001] This utility model belongs to the field of vehicle seat technology and relates to a device for fixing and positioning long slide rails. Background Technology

[0002] Currently, to meet the needs of comfortable family travel, MPV models are becoming increasingly common, and the application of electric long sliding rails is also growing. In the traditional design of screw-driven long sliding rail mechanisms, a centrally located screw connection is commonly used. This results in the screw obstructing the strength fixing point in the middle of the sliding rail. Therefore, installation can only rely on the fixing points at the front and rear ends of the sliding rail, making it difficult to meet the overall strength requirements. Summary of the Invention

[0003] The purpose of this invention is to provide a fixing and positioning device for long slide rails, which can solve the above-mentioned problems and improve assembly efficiency.

[0004] According to the technical solution provided by this utility model: a fixing and positioning device for a long slide rail includes a lower rail, in which a positioning support mechanism is provided; the positioning support mechanism includes a screw and a positioning component, with a transmission plate between them; the positioning component includes a positioning pin housing fixedly installed in the lower rail, a positioning pin cavity in the positioning pin housing, a positioning pin slidably disposed in the positioning pin cavity, and an elastic element disposed between the top of the positioning pin and the positioning pin housing; a lower rail pin hole is provided on the lower rail, the lower rail pin hole being located below the positioning pin; a baffle flange is provided in the middle of the positioning pin; the transmission plate... The lower part of the moving plate is a base plate with a through hole. The base plate slides in the lower rail. The upper part of the transmission plate is a limiting plate with inserts on both sides of the end of the limiting plate. There is a positioning pin clearance groove between the two inserts. There is a vertical plate between the base plate and the limiting plate. There are insert clearance grooves on both sides of the middle of the positioning pin sleeve, which are connected to the positioning pin cavity. The inserts at the end of the limiting plate extend into the insert clearance grooves. The baffle flange in the middle of the positioning pin is located above the inserts. The upper and lower ends of the elastic element abut against the positioning pin cover and the top inserts of the positioning pin contact the baffle flange.

[0005] As a further improvement of this utility model, the positioning pin housing adopts a split structure, consisting of a positioning pin sleeve and a positioning pin cover. The positioning pin sleeve is fixedly connected to the lower rail, and the positioning pin cover is installed on the upper part of the positioning pin sleeve.

[0006] As a further improvement of this utility model, the positioning pin sleeve and the positioning pin cover are connected by a threaded structure, the top of the positioning pin sleeve is provided with an external thread, and the bottom of the positioning pin cover is provided with a matching internal thread.

[0007] As a further improvement of this utility model, the lower part of the positioning pin is a guide positioning part, which is conical in shape.

[0008] As a further improvement of this utility model, the transmission plate is zig-shaped.

[0009] As a further improvement of this utility model, the lower rail is provided with a connected screw hole and a screw groove, the screw hole is adapted to the size of the screw head, and the screw groove is adapted to the size of the middle part of the screw.

[0010] As a further improvement of this utility model, a sliding groove is provided at the bottom of the lower rail; the lower positioning pin sleeve is fixedly installed in the sliding groove by bolts; the pin hole of the lower rail is located in the middle of the sliding groove; the base plate slides in the sliding groove; the screw hole and screw groove are located at the middle position in the length direction of the sliding groove.

[0011] As a further improvement of this utility model, the elastic element is a spring.

[0012] As a further improvement to this utility model, the screw is a mushroom-shaped screw.

[0013] The positive and progressive effects of this utility model are as follows: 1. This utility model can solve the problem of insufficient strength in the middle caused by the installation at both ends of a long slide rail. The mushroom nails and the grooves together strengthen the rigidity of the middle of the lower rail.

[0014] 2. The positioning pin of this utility model ensures fixation while achieving precise positioning, thereby improving assembly efficiency. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model.

[0016] Figure 2 This is a first sectional view of the present invention before installation.

[0017] Figure 3 This is a second sectional view of the present invention before it is installed.

[0018] Figure 4 This is a first sectional view of the present invention after installation.

[0019] Figure 5 This is a second sectional view of the present invention after it has been installed.

[0020] Figure 6 This is a schematic diagram showing the positions of the screw holes and screw slots of this utility model.

[0021] Figure 7 This is a schematic diagram of the screw structure of this utility model. Detailed Implementation

[0022] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.

[0023] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0024] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this utility model described herein. Furthermore, terms such as "comprising" and "having" mean that in addition to those already listed in "comprising" and "having," other unlisted contents may also be included; for example, a process, method, system, product, or device may include a series of steps or units, not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to these processes, methods, products, or devices.

[0025] Due to the angle of the drawing, some parts may not be drawn, but their positions and connections can be understood from the text descriptions.

[0026] like Figure 1 As shown, this utility model is a device for fixing and positioning long slide rails, including a lower rail 1, in which a positioning support mechanism is provided.

[0027] like Figure 3 As shown, the positioning support mechanism includes a screw 5 and a positioning assembly 2, with a transmission plate 4 between them. The positioning assembly 2 includes a positioning pin housing fixedly installed in the lower rail 1, a positioning pin cavity in the positioning pin housing, a positioning pin 2-1 slidably disposed in the positioning pin cavity, and an elastic element 2-2 between the top of the positioning pin 2-1 and the positioning pin housing. The lower rail 1 has a lower rail pin hole 1-1, which is located below the positioning pin 2-1.

[0028] The positioning pin housing adopts a split structure, consisting of positioning pin sleeve 2-3 and positioning pin cover 2-4. Positioning pin sleeve 2-3 is fixedly connected to the lower rail 1, and positioning pin cover 2-4 is installed on the upper part of positioning pin sleeve 2-3.

[0029] The locating pin sleeve 2-3 and the locating pin cover 2-4 are connected by a threaded structure. The top of the locating pin sleeve 2-3 is provided with an external thread, and the bottom of the locating pin cover 2-4 is provided with a matching internal thread.

[0030] The lower part of the locating pin 2-1 is a guide locating part 2-11, which is conical in shape and can more smoothly cooperate with the locating pin hole on the vehicle body. The locating pin 2-1 has a baffle flange 2-12 in the middle.

[0031] The transmission plate 4 is Z-shaped. The lower part of the transmission plate 4 is a base plate 4-1 with a through hole that matches the head size of the screw 5. The base plate 4-1 slides within the lower rail 1. The upper part of the transmission plate 4 is a limiting plate 4-2 with inserts 4-21 on both sides of its end. A positioning pin clearance groove is located between the two inserts 4-21. A vertical plate 4-3 is located between the base plate 4-1 and the limiting plate 4-2. The positioning pin sleeve 2-3 has insert clearance grooves on both sides of its middle section, which are connected to the positioning pin cavity. The insert 4-21 at the end of the limiting insert plate 4-2 extends into the insert plate clearance groove. The baffle flange 2-12 in the middle of the positioning pin 2-1 is located above the insert 4-21. The upper and lower ends of the elastic element 2-2 abut against the positioning pin cover 2-4 and the top of the positioning pin 2-1, giving the positioning pin 2-1 a downward pushing force. The insert 4-21 contacts the baffle flange 2-12, preventing the positioning pin 2-1 from moving downward.

[0032] like Figure 6 As shown, the lower rail 1 is provided with a connected screw hole 1-3 and screw groove 1-4. The screw hole 1-3 is adapted to the head size of the screw 5, and the screw groove 1-4 is adapted to the middle size of the screw 5.

[0033] The bottom of the lower rail 1 is provided with a sliding groove 1-2. The lower positioning pin sleeve 2-3 is fixedly installed in the sliding groove 1-2 by bolts. The lower rail pin hole 1-1 is located in the middle of the sliding groove 1-2. The base plate 4-1 slides in the sliding groove 1-2. The screw hole 1-3 and the screw groove 1-4 are located at the middle position along the length of the sliding groove 1-2.

[0034] An upper rail 7 is slidably mounted in the lower rail 1, and an upper rail drive mechanism is provided in the lower rail 1. The upper rail drive mechanism includes a lead screw 6, the two ends of which are connected to the lower rail 1 through lead screw mounting seats 3. The lead screw mounting seats 3 are located in the lower sliding groove 1-2. The limiting plate 4-2 is provided with a clearance hole to prevent interference with the lead screw mounting seat 3 on one side.

[0035] The elastic element 2-2 is a spring.

[0036] The working process of this utility model is as follows: Screw 5 is pre-installed at the bottom of the vehicle compartment, and the bottom of the vehicle compartment is pre-machined with a vehicle compartment positioning pin hole that mates with positioning pin 2-1.

[0037] like Figures 2-3As shown, keep the lower rail 1 horizontal and move it close to the screw 5 from top to bottom. Continue to move the lower rail 1 down. The screw 5 passes through the screw hole 1-3 on the lower rail 1 and the bottom plate through hole on the bottom plate 4-1 in sequence. The lower rail 1 contacts the bottom of the vehicle compartment, ensuring that the screw groove 1-4 and the vehicle compartment positioning pin hole are located on both sides of the screw 5.

[0038] The lower rail 1 is moved toward the locating pin hole in the cabin. The middle part of the screw 5 first contacts the wall of the through hole in the base plate 4-1. The transmission plate 4 remains stationary after contacting the screw 5. At the same time, due to the presence of the screw groove 1-4, the lower rail 1 continues to move toward the locating pin hole in the cabin. The middle part of the screw 5 slides in the screw groove 1-4, and relative movement occurs between the transmission plate 4 and the lower rail 1. The insert 4-21 gradually moves out of the insert plate clearance groove. When the middle part of the screw 5 contacts the end of the screw groove 1-4, the locating pin 2-1 moves with the lower rail 1 to above the locating pin hole in the cabin. The insert 4-21 completely moves out of the insert plate clearance groove, and the baffle flange 2-12 disengages from the insert 4-21. The locating pin 2-1 moves downward under the thrust of the elastic element 2-2, passes through the lower rail pin hole 1-1, and enters the cabin locating pin hole, completing the positioning of the cabin and the lower rail 1. Figures 4-5 As shown.

[0039] like Figure 7 As shown, screw 5 is a mushroom-shaped screw. The head of screw 5 presses against the lower rail 1, keeping the lower rail 1 stable in the vertical direction. The middle part of the mushroom-shaped screw mates with the screw groove 1-4, which enhances the stability of the middle part of the lower rail 1.

[0040] It is understood that the above embodiments are merely exemplary implementations used to illustrate the principles of this utility model, and the utility model is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of this utility model, and these modifications and improvements are also considered to be within the protection scope of this utility model.

Claims

1. A device for fixing and positioning long slide rails, characterized in that, The system includes a lower rail (1), which has a positioning support mechanism. The positioning support mechanism includes a screw (5) and a positioning component (2), with a transmission plate (4) between them. The positioning component (2) includes a positioning pin housing fixedly installed in the lower rail (1), with a positioning pin cavity in the positioning pin housing. A positioning pin (2-1) is slidably provided in the positioning pin cavity, and an elastic element (2-2) is provided between the top of the positioning pin (2-1) and the positioning pin housing. The lower rail (1) has a lower rail pin hole (1-1), which is located below the positioning pin (2-1). A baffle flange (2-12) is provided in the middle of the positioning pin (2-1). The lower part of the transmission plate (4) is a base plate (4-1), which has a base plate through hole. The base plate (4-1) is located below the lower rail (1). The transmission plate (4) slides in the middle. The upper part of the transmission plate (4) is a limiting plate (4-2). The two sides of the end of the limiting plate (4-2) are provided with inserts (4-21). The two sides of the inserts (4-21) are connected to the positioning pin relief groove. The bottom plate (4-1) and the limiting plate (4-2) are connected to the vertical plate (4-3). The two sides of the middle part of the positioning pin sleeve (2-3) are provided with insert plate relief grooves. The insert plate relief grooves are connected to the positioning pin cavity. The inserts (4-21) at the end of the limiting plate (4-2) extend into the insert plate relief groove. The baffle flange (2-12) in the middle of the positioning pin (2-1) is located above the inserts (4-21). The upper and lower ends of the elastic element (2-2) abut against the positioning pin cover (2-4) and the top inserts (4-21) and baffle flange (2-12) of the positioning pin (2-1).

2. The fixing and positioning device for long slide rails as described in claim 1, characterized in that, The positioning pin housing adopts a split structure, consisting of a positioning pin sleeve (2-3) and a positioning pin cover (2-4). The positioning pin sleeve (2-3) is fixedly connected to the lower rail (1), and the positioning pin cover (2-4) is installed on the upper part of the positioning pin sleeve (2-3).

3. The fixing and positioning device for long slide rails as described in claim 1, characterized in that, The locating pin sleeve (2-3) and the locating pin cover (2-4) are connected by a threaded structure. The top of the locating pin sleeve (2-3) is provided with an external thread, and the bottom of the locating pin cover (2-4) is provided with a matching internal thread.

4. The fixing and positioning device for long slide rails as described in claim 1, characterized in that, The lower part of the positioning pin (2-1) is the guide positioning part (2-11), which is conical in shape.

5. The fixing and positioning device for long slide rails as described in claim 1, characterized in that, The transmission plate (4) is zig-shaped.

6. The fixing and positioning device for long slide rails as described in claim 1, characterized in that, The lower rail (1) is provided with a connected screw hole (1-3) and screw groove (1-4). The screw hole (1-3) is adapted to the head size of the screw (5), and the screw groove (1-4) is adapted to the middle size of the screw (5).

7. The fixing and positioning device for long slide rails as described in claim 1, characterized in that, The bottom of the lower rail (1) is provided with a sliding groove (1-2); the lower positioning pin sleeve (2-3) is fixedly installed in the sliding groove (1-2) by bolts; the lower rail pin hole (1-1) is located in the middle of the sliding groove (1-2); the base plate (4-1) slides in the sliding groove (1-2); the screw hole (1-3) and the screw groove (1-4) are located in the middle of the length direction of the sliding groove (1-2).

8. The fixing and positioning device for long slide rails as described in claim 1, characterized in that, The elastic element (2-2) is a spring.

9. The fixing and positioning device for long slide rails as described in claim 1, characterized in that, Screws (5) are mushroom-shaped screws.

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