Guide rail assembly of vehicle sunroof

Abstract

The invention relates to the technical field of guide rails, in particular to a guide rail assembly of a vehicle sunroof, which comprises a base and two groups of guide rail bodies detachably connected to the base, the base is at least provided with a horizontal part, and the two groups of guide rail bodies are vertically arranged on the horizontal part of the base at intervals; a groove is formed in the inner side of the horizontal part, two elastic pieces are arranged at the groove, one ends of the two elastic pieces are connected to the horizontal part, and the other ends of the two elastic pieces are pre-pressed, deformed and attached to each other; the guide rail body comprises a head part, two elastic supporting parts and a lubricating channel, and the two elastic supporting parts are arranged at the bottom of the head part at intervals. Through the linkage design of the elastic supporting part and the elastic piece, when the positive pressure applied by the sliding block is increased, lubricating oil in the oil storage cavity is pressed and is precisely conveyed to the sliding contact face through the lubricating channel and the lubricating guide groove, oil supply according to needs is achieved, the friction coefficient can be effectively reduced through the mechanism, and the clamping stagnation phenomenon caused by insufficient lubrication is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of guide rails, in particular to a guide rail assembly of a vehicle sunroof. Background Art

[0002] In the automotive sunroof system, the guide rail assembly is a core component, and its performance directly affects the sliding smoothness, durability, and user experience of the sunroof. In the existing technology, sunroof guide rails generally have problems such as insufficient lubrication and high maintenance costs.

[0003] The traditional guide rail lubrication method relies on external application or regular manual addition of lubricating oil. It is unable to adjust the lubrication amount in real time according to the dynamic changes in the slider's movement resistance, resulting in large fluctuations in the friction coefficient of the sliding contact surface. After long-term operation, problems such as jamming and abnormal noise are prone to occur, reducing the life of the sunroof system.

[0004] Most skylight guide rails are integral structures. Once they are partially worn or damaged, they need to be replaced as a whole, which results in high maintenance costs. Although some designs attempt to split them into modules, the complex connection structure makes the disassembly and assembly process cumbersome, which is not conducive to quick maintenance. Summary of the Invention

[0005] The present invention addresses the problems in the prior art and provides a guide rail assembly for a vehicle sunroof. The specific technical solutions are as follows:

[0006] A guide rail assembly for a vehicle sunroof includes a base and two sets of guide rail bodies detachably connected to the base, wherein the base has at least a horizontal portion, and the two sets of guide rail bodies are vertically arranged and spaced apart on the horizontal portion of the base;

[0007] A groove is provided on the inner side of the horizontal portion, and two elastic sheets are provided in the groove, one end of the two elastic sheets are connected to the horizontal portion, and the other ends are pre-compressed and deformed and fit together;

[0008] The guide rail body includes a head, two elastic support parts, and a lubrication channel. The two elastic support parts are spaced apart and arranged at the bottom of the head. The lubrication channel is opened in the head.

[0009] In the installed state, the gap between the two elastic support parts communicates with the groove and forms an oil storage chamber for accommodating lubricating oil. The two elastic sheets are supported by the guide rail body and open to both sides and press against the elastic support parts. The lubrication channel is connected and arranged between the oil storage chamber and the sliding contact surface.

[0010] When the positive pressure applied by the slider increases, the elastic sheet presses the elastic arms closer to each other, squeezing the lubricating oil in the oil storage cavity to flow out through the lubrication channel of the lubrication channel to lubricate the sliding contact surface.

[0011] As a further technical solution of the present invention, both sides of the groove extend outward to form a horizontal section;

[0012] The elastic support portion includes a connecting section and an inserting section connected in sequence, wherein one end of the connecting section is directly connected to the head, and the inserting section is connected to the other end of the connecting section;

[0013] In the installed state, the insertion sections of the two elastic support parts are bent and deformed outwards and inserted into the grooves and pressed against the end walls of the horizontal sections.

[0014] As a further technical solution of the present invention, a lubrication groove corresponding to the lubrication channel is opened on the surface of the head along its cross-sectional shape, and the free end of the lubrication groove extends to the surface of the elastic support portion.

[0015] As a further technical solution of the present invention, the width of the insertion section is smaller than that of the connecting section so as to form a stepped portion located on the outside at the connection;

[0016] In the installed state, the two elastic sheets are supported by the guide rail body to open to both sides and press against the stepped portion of the elastic support portion to form a smooth sliding surface.

[0017] As a further technical solution of the present invention, a control component is installed in the main lubrication channel, and the control component includes:

[0018] a retaining ring, installed in the lubrication channel;

[0019] Several elastic sealing pieces, one end of which is connected to the fixed ring, and the other end of which extends obliquely toward the axis and is distributed circumferentially to form a tapered structure. Under normal conditions, adjacent elastic sealing pieces are tightly fitted together, and when pressurized, the ends open outward to form an oil injection port;

[0020] and an elastic sealing film connected to the end of the elastic support arm and sealing the tapered opening of the tapered structure, so that the lubricating oil is sprayed out in a mist form only through the oil spray port, and the opening of the oil spray port increases with the increase of positive pressure.

[0021] As a further technical solution of the present invention, the flared end of the conical structure faces the oil storage cavity as the oil inlet direction, and the tapered end serves as the oil outlet direction, forming a one-way check channel to prevent the lubricating oil from flowing back.

[0022] The beneficial effects of the present invention are as follows:

[0023] (1) Through the linkage design of the elastic support and the elastic sheet, when the positive pressure applied by the slider increases, the lubricating oil in the oil reservoir is pressurized and accurately delivered to the sliding contact surface through the lubrication channel and lubrication groove, achieving "on-demand oil supply." This mechanism can effectively reduce the friction coefficient, avoid sticking caused by insufficient lubrication, and reduce lubricating oil waste.

[0024] (2) The conical structure and elastic sealing film design in the control component allow the lubricating oil to be sprayed out in a mist-like manner, with a wide coverage and uniform adhesion, significantly improving the lubrication efficiency of the sliding surface while avoiding splashing and contamination of other components.

[0025] (3) The fitting design of the elastic sheet and the elastic support portion forms a sealing barrier to prevent the lubricating oil from overflowing. At the same time, the flexible cooperation between the elastic support portion and the elastic sheet can absorb the tiny vibrations during operation, reduce the abnormal leakage of lubricating oil caused by vibration, and maintain the stable lubrication state of the sliding surface.

[0026] (4) The guide rail body is inserted into the base groove through the elastic support part and pressed against the horizontal section end wall to achieve positioning, and can be installed without screws or welding. The detachable design only requires the damaged part to be disassembled and replaced, without replacing the entire guide rail assembly, which greatly reduces maintenance costs. The connection between the base and the guide rail body adopts a pre-stressed elastic sheet and a stepped part design to form a smooth sliding surface, while reducing the use of traditional fasteners, shortening assembly time and reducing process complexity. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 Shows a schematic diagram of the overall structure of the guide rail assembly of a vehicle sunroof;

[0028] Figure 2 shows a schematic structural diagram of the base;

[0029] Figure 3 Shows a schematic structural diagram of the guide rail body;

[0030] Figure 4 shows a schematic structural diagram of the elastic support portion;

[0031] Figure 5 Shows a schematic diagram of the structure after the base and guide rail body are installed;

[0032] Figure 6 shows a schematic structural diagram of the control component;

[0033] Figure 7 A schematic diagram of the structure of the control component under pressure is shown.

[0034] Description of the drawings: 100, base; 110, horizontal part; 111, groove; 112, elastic sheet; 113, horizontal section; 120, vertical part; 200, guide rail body; 210, head; 220, elastic support part; 221, connecting section; 222, insertion section; 230, lubrication channel; 240, lubrication groove; 250, oil storage chamber; 300, control component; 310, fixing ring; 320, elastic sealing sheet; 330, elastic sealing membrane; 340, oil injection port. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0036] Figure 1 Shows a schematic diagram of the overall structure of the guide rail assembly of a vehicle sunroof; Figure 1 In the figure, the guide rail assembly of the vehicle sunroof is used to cooperate with the slider to guide the sliding of the sunroof; it includes a base 100 and two sets of guide rail bodies 200, wherein the two sets of guide rail bodies 200 are vertically arranged and spaced apart in the base 100, and are used to support and guide the sliding of the slider, and the base 100 is used to be installed on the top of the car, and its overall structure is U-shaped, and the open side is used for the sliding of the slider and the sunroof.

[0037] Figure 2 shows a schematic structural diagram of the base 100; Figure 2 In the figure, the base 100 includes a horizontal part 110 and two groups of vertical parts 120, wherein the two groups of vertical parts 120 are vertically connected to the two ends of the horizontal part 110 to form a U-shaped structure; a groove 111 is opened on the inner side of the horizontal part 110, and two elastic sheets 112 are provided at the groove 111, one end of the two elastic sheets 112 are connected to the horizontal part 110, and the other ends are pre-deformed and fit together; both sides of the groove 111 extend outward to form a horizontal section 113; that is, under normal conditions, the free ends of the two elastic sheets 112 are driven to fit each other by the rebound force after their own deformation.

[0038] Figure 3 shows a schematic structural diagram of the guide rail body 200; Figure 3 In the figure, the guide rail body 200 includes a head 210, two elastic support parts 220, a lubrication channel 230 and a lubrication guide groove 240, wherein the head 210 is a dovetail structure as a whole, with the width of the top being greater than the width of the bottom, which is conducive to fitting the slider; the two elastic support parts 220 are arranged at intervals at the bottom of the head 210, and a lubrication channel 230 is opened in the head 210, and one end of the lubrication channel 230 connects the gap between the two sets of elastic support parts 220, and the other end extends upward from the top of the head 210, so that the gap between the two elastic support parts 220 is connected to the sliding contact surface of the top of the head 210, which is conducive to subsequent lubrication and oil supply. A lubrication guide groove 240 corresponding to the lubrication channel 230 is opened on the surface of the head 210 along its cross-sectional shape, and the free end of the lubrication guide groove 240 extends to the surface of the elastic support part 220, that is, the lubrication guide groove 240 is connected to the lubrication channel 230, and can guide the lubricating oil flowing out of the lubrication channel 230 to the contact surface of the entire guide rail body 200 and the slider.

[0039] Figure 4 shows a schematic structural diagram of the elastic support portion 220; Figure 4In the figure, the elastic support portion 220 includes a connecting section 221 and an insertion section 222 connected in sequence, wherein one end of the connecting section 221 is directly connected to the head 210, and the insertion section 222 is connected to the other end of the connecting section 221. The width of the insertion section 222 is smaller than the connecting section 221 to form a step portion located on the outside at the connection; it should be noted that both sets of elastic support portions 220 are elastic and can be deformed, specifically metal or plastic, and there is no further restriction on the material.

[0040] Figure 5 Schematic diagram showing the structure of the base 100 and the guide rail body 200 after installation; Figure 5 Combine Figure 3 and Figure 4 In the installed state, the insertion sections 222 of the two elastic support parts 220 are bent and deformed outward and inserted into the groove 111 and pressed against the end wall of the horizontal section 113. The two elastic sheets 112 are supported by the guide rail body 200 to open to both sides and press against the stepped portion of the elastic support part 220 to form a smooth sliding surface. The gap between the two elastic support parts 220 is connected to the groove 111 and forms an oil storage chamber 250 for containing lubricating oil; when the sliding resistance between the slider and the guide rail body 200 increases, the positive pressure applied by the slider to the guide rail body 200 increases, the two elastic sheets 112 are compressed and deformed and press the two elastic support parts 220 closer to each other, so as to squeeze the lubricating oil in the oil storage chamber 250 to flow out through the lubrication channel 230 and fully lubricate the sliding contact surface through the lubrication groove 240 to reduce the sliding resistance. After the sliding resistance is reduced, the positive pressure applied by the slider to the guide rail body 200 is reduced, and the two elastic support parts 220 rebound and return to their original position.

[0041] It should be noted that in the present application, the guide rail body 200 is inserted longitudinally, and after insertion, the end of the insertion section 222 is deformed and extends into the horizontal section 113, which can limit the elastic support part 220 in the vertical direction to form an anti-slip feature, and the two elastic sheets 112 and the two elastic support parts 220 are both deformable and can resist oil seepage caused by vibration; and the guide rail body 200 can be disassembled and replaced separately when its service life is exhausted, reducing maintenance costs.

[0042] Figure 6 shows a schematic structural diagram of the control component 300; Figure 7 It shows a schematic structural diagram of the control assembly 300 in a pressurized state; Figure 6 and Figure 7In the embodiment, a control assembly 300 is installed in the lubrication channel 230. The control assembly 300 includes a fixing ring 310, an elastic sealing piece 320 and an elastic sealing film 330. The fixing ring 310 is installed on the inner wall of the lubrication channel 230 to fix the entire control assembly 300 in the lubrication channel 230. One end of the elastic sealing piece 320 is connected to the fixing ring 310, and the other end extends obliquely toward the axial direction. The elastic sealing piece 320 is provided with a plurality of groups along the circumference of the fixing ring 310 to form a conical structure. The elastic sealing film 330 is connected to the other end of the elastic sealing piece 320 and blocks the end of the conical structure. The end of the elastic sealing piece 320 is pressed to open outward so that an oil nozzle 340 for spraying lubricating oil is formed between two adjacent groups of elastic sealing pieces 320. That is to say, in normal state The lubricating oil can be sprayed out in the form of mist through the gap to avoid splashing. The elastic sealing film 330 can block the cone mouth of the cone structure so that the cone mouth is still sealed when the elastic sealing film 320 is opened, forcing the lubricating oil to be sprayed out only through the oil injection port 340. The opening angle of the elastic sealing film 320 increases with the increase of pressure, that is, the oil injection port 340 adjusts the opening in real time according to the size of the positive pressure. The flared end of the cone structure is in the oil inlet direction, and the tapered end is in the oil outlet direction, which is conducive to preventing backflow and forming the lubrication channel 230 into a one-way channel.

[0043] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same.

Claims

1. The guide rail assembly of the vehicle sunroof is characterized in that: The invention comprises a base (100) and two sets of guide rail bodies (200) detachably connected to the base (100), wherein the base (100) has at least a horizontal portion (110), and the two sets of guide rail bodies (200) are both vertically arranged and spaced apart on the horizontal portion (110) of the base (100); A groove (111) is provided on the inner side of the horizontal portion (110), and two elastic sheets (112) are provided at the groove (111). One end of the two elastic sheets (112) is connected to the horizontal portion (110), and the other end is pre-compressed and deformed and fits together. The guide rail body (200) comprises a head (210), two elastic support parts (220), and a lubrication channel (230), wherein the two elastic support parts (220) are arranged at intervals at the bottom of the head (210), and the lubrication channel (230) is opened in the head (210); In the installed state, the gap between the two elastic support parts (220) communicates with the groove (111) and forms an oil storage cavity (250) for accommodating lubricating oil. The two elastic sheets (112) are supported by the guide rail body (200) to open to both sides and press against the elastic support parts (220). The lubrication channel (230) is arranged between the oil storage cavity (250) and the sliding contact surface. When the positive pressure applied by the slider increases, the elastic sheet (112) presses the elastic arms (220) closer to each other, squeezing the lubricating oil in the oil storage cavity (250) to flow out through the lubricating channel (230) to lubricate the sliding contact surface.

2. The guide rail assembly for a vehicle sunroof according to claim 1, characterized in that: Both sides of the groove (111) extend outward to form a horizontal section (113); The elastic support portion (220) comprises a connecting section (221) and an inserting section (222) connected in sequence, wherein one end of the connecting section (221) is directly connected to the head (210), and the inserting section (222) is connected to the other end of the connecting section (221); In the installed state, the insertion sections (222) of the two elastic support parts (220) are bent and deformed outwards and inserted into the groove (111) and pressed against the end wall of the horizontal section (113).

3. The guide rail assembly for a vehicle sunroof according to claim 2, characterized in that: The insertion section (222) has a width smaller than that of the connection section (221) so as to form a stepped portion located on the outside at the connection; In the installed state, the two elastic sheets (112) are supported by the guide rail body (200) to open to both sides and press against the stepped portion of the elastic support portion (220) to form a smooth sliding surface.

4. The guide rail assembly for a vehicle sunroof according to claim 3, characterized in that: A lubrication guide groove (240) corresponding to the lubrication channel (230) is provided on the surface of the head (210) along its cross-sectional shape, and a free end of the lubrication guide groove (240) extends to the surface of the elastic support portion (220).

5. The guide rail assembly for a vehicle sunroof according to claim 4, characterized in that: A control assembly (300) is installed in the lubrication channel (230), and the control assembly (300) includes: A fixing ring (310) is installed in the lubrication channel (230); A plurality of elastic sealing sheets (320), one end of which is connected to the fixing ring (310), and the other end of which is inclined and extended in the axial direction and distributed along the circumference to form a tapered structure. Under normal conditions, adjacent elastic sealing sheets (320) are tightly fitted together, and when pressurized, the ends of the elastic sealing sheets open outward to form an oil injection port (340); and an elastic sealing film (330) connected to the end of the elastic support arm (320) and sealing the tapered opening of the tapered structure, so that the lubricating oil is sprayed out in a mist form only through the oil spray port (340), and the opening of the oil spray port (340) increases with the increase of the positive pressure.

6. The guide rail assembly for a vehicle sunroof according to claim 5, characterized in that: The flared end of the conical structure faces the oil storage cavity (250) as the oil inlet direction, and the tapered end serves as the oil outlet direction, forming a one-way non-return channel to prevent the lubricating oil from flowing back.

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