High-tightness automobile skylight guide rail with limiting function

Abstract

The invention relates to a high-tightness automobile skylight guide rail with a limiting function, and relates to the technical field of automobile skylight systems. The device comprises a window formed in an automobile roof, a movable groove connected with the window is formed in the automobile roof, a driven guide rail for controlling the window to be opened and closed is arranged in the movable groove, a driving guide block located in the movable groove is further arranged on the driven guide rail in a sliding mode, and a sealing component and a limiting component are arranged on the two sides of the driven guide rail respectively. The sealing performance between the automobile roof window and the glass arranged on the guide rail is improved through the sealing part, and the moving distance of the automobile skylight guide rail is achieved through the limiting part. The limiting component achieves smooth speed reduction of the driving guide block through clamping friction between the ceramic piece and the friction piece, the rigid collision problem of a traditional rigid stop is thoroughly solved, and the situation that the driving guide block deforms during collision, blocks the driven guide rail and cannot move is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of automobile sunroof systems, and in particular to a high-tightness automobile sunroof guide rail with a limiting function. Background Art

[0002] The car sunroof guide rail is a key component in the car sunroof system. Its main function is to guide the opening and closing of the sunroof glass, ensure that the sunroof runs smoothly and smoothly, and provide good sealing and structural strength.

[0003] Sunroof rails typically consist of a track body, sliders, and connectors. The track body is typically made of high-strength metal (such as aluminum alloy or high-quality steel). Precision machining creates a precisely shaped track groove, providing stable support for the slider's movement. The rail design must balance structural strength, sliding stability, and sealing to ensure proper sunroof operation under various operating conditions.

[0004] For example, Chinese patent publication number CN106427502B discloses a sunroof guide rail for an automobile, comprising a guide rail body and a sunroof glass slidably engaged therewith. The guide rail body is provided with a stepped first track, a vertically disposed dust rail disposed at the front end of the guide rail body, and a dust strip made of a flexible material disposed on the dust rail. The dust rail comprises a stepped second track and a vertical rib disposed at the edge of the second track. A first sliding groove for sliding the dust strip is disposed between the second track and the vertical rib, and the end of the dust strip is fixedly connected to the front end of the sunroof glass. The dust rail is provided at the front end of the guide rail body, and a dust strip made of a flexible material is disposed on the dust rail. The dust strip is connected to the front end of the sunroof body. When the sunroof is opened, the sunroof body pulls the dust strip to slide along the first track of the guide rail body and cover the first track, thereby preventing dust, leaves, and other debris from accumulating on the track when the sunroof is opened and abrading the sunroof components.

[0005] However, the above device still has some shortcomings in actual use: 1. First of all, in the existing technology, the traditional active guide block is slidably arranged on the passive guide rail. When the active guide block moves, limit devices are provided at both ends of the passive guide rail. Therefore, when the active guide block moves to the specified position at a uniform speed, it will hit the limit device to realize the limitation of the active guide block. However, in this process, as the skylight is opened and closed for a long time and the high temperature weather in summer every year, the active guide block will frequently hit the limit device and deform. Over time, the two ends of the active guide block are deformed and become longer in width, causing the active guide block to contact the side wall of the passive guide rail and affect its sliding smoothness. What's worse, the active guide block is stuck in the passive guide rail and cannot move.

[0006] 2. Secondly, the limiting effect of the existing device is poor. The limiting effect of the limiting device gradually fails as the number of times the sunroof is opened increases. In addition, as the number of times the sunroof is opened increases, the lubrication effect of its upper end will be greatly reduced, resulting in greater wear when the sunroof is subsequently started and stopped, and then causing shaking and abnormal noise during the opening and closing process of the sunroof.

[0007] Therefore, based on the above-stated viewpoint, there is still room for improvement in the existing devices. Summary of the Invention

[0008] In order to solve the above problems, the present invention provides a high-tightness automobile sunroof guide rail with a limiting function, which adopts the following technical solutions: A high-tightness automobile sunroof guide rail with a limiting function includes a window opened on the automobile roof, a movable groove connected to the window is provided on the automobile roof, a passive guide rail for controlling the opening and closing of the window is provided in the movable groove, and an active guide block located in the movable groove is slidably provided on the passive guide rail, and the active guide block is provided with a sunroof that is received in the movable groove and seals the automobile roof window.

[0009] Sealing components and limiting components are respectively provided on both sides of the passive guide rail. The sealing components are used to improve the sealing between the car roof window and the glass set on the guide rail, and the limiting components are used to realize the moving distance of the car sunroof guide rail.

[0010] The top of the passive guide rail is provided with a U-shaped groove for the active guide block to slide, and the bottom of the passive guide rail is provided with a driving groove for driving the active guide block to move.

[0011] Preferably, the limiting component includes limiting strip grooves opened on both sides of the length direction of the passive guide rail, and ceramic plates are slidably installed in the limiting strip grooves of the passive guide rail. The side walls of the active guide block are clamped by the synchronous movement of two groups of ceramic plates, thereby slowing down and limiting the movement of the active guide block.

[0012] Several ceramic sheets on one side of the passive guide rail are arranged on a centralized mounting plate. The end of the centralized mounting plate away from the ceramic sheets is hinged to a right-angle lever. The side of the right-angle lever away from the centralized mounting plate is arranged in a driving groove at the bottom of the passive guide rail, and the middle part of the right-angle lever is hinged to the side wall of the passive guide rail. Wedge blocks are slidably installed at the head and tail ends of the passive guide rail.

[0013] Preferably, the part of the wedge block located at the upper end of the passive guide rail is a slope structure, and the part of the wedge block located at the lower end of the passive guide rail is a trapezoidal slope structure. A reset tension spring is installed between the bottom of the wedge block and the inner wall of the driving groove of the passive guide rail, and the side of the right-angle lever away from the centralized mounting plate is located directly below the wedge block, and a reset compression spring is provided between the centralized mounting plate and the passive guide rail.

[0014] Preferably, sliding card slots are provided on both sides of the active guide block, and friction plates corresponding to the ceramic plates are slidably inserted and installed in the sliding card slots of the active guide block; micro-concave-convex structures are provided at the parts where the ceramic plates and the friction plates contact each other.

[0015] Preferably, the sealing component includes a fixed sealing frame and a movable sealing frame. Two groups of fixed sealing frames are installed on the upper end surface of the passive guide rail, and the fixed sealing frames are strip-shaped and distributed parallel to the passive guide rail. Additionally, two other groups of fixed sealing frames are installed at the head and tail ends of the passive guide rail and are distributed perpendicular to it. The four groups of fixed sealing frames form a rectangular shape. The movable sealing frame is slidably installed on the fixed sealing frame along the height direction of the fixed sealing frame, and a sealing spring is provided between the movable sealing frame and the fixed sealing frame. A rubber ring filled with sealed gas is installed on the top of the movable sealing frame.

[0016] Preferably, right-angle-structured fixed sealing frames are separately installed at the four corners of the four groups of fixed sealing frames distributed in a rectangular shape, and the strip-shaped fixed sealing frames are connected to the right-angle-structured fixed sealing frames. Rubber rings are also provided on the right-angle-structured fixed sealing frames, and the rubber rings on the right-angle-structured fixed sealing frames and the rubber rings on the strip-shaped fixed sealing rings are interconnected.

[0017] Preferably, a limiting unit for preventing the active guide block from shifting is installed at the position of the rubber ring. The limiting unit includes a pawl hinged and installed in the length direction of the passive guide rail, and a limiting pawl groove for the pawl to be hinged is provided on the passive guide rail.

[0018] A limiting airbag is installed on the inner side wall of the movable sealing frame corresponding to the position of the pawl, and the limiting airbag is connected to the rubber ring through a pipeline.

[0019] Preferably, a microporous copper-based gasket is further provided on the side wall of the active guide block. The microporous copper-based gasket is composed of a sandwich structure, which includes a surface layer, an intermediate layer, and a bottom layer. The surface layer is a U-shaped frame structure, the intermediate layer is a sponge-like metal block formed by pressing copper powder, and the bottom layer is a stainless steel plate. The intermediate layer is located between the surface layer and the bottom layer, and the surface layer and the bottom layer are clamped and arranged.

[0020] Preferably, the microporous copper-based gasket is embedded at the bottom of the active guide block.

[0021] Preferably, a guiding strip for guiding rainwater is further provided on one side of the passive guide rail, and water filtering holes are provided on the guiding strip.

[0022] In summary, the present application includes at least one of the following beneficial technical effects: First, the limiting component of the present invention realizes the smooth deceleration of the active guide block through the clamping and friction between the ceramic plate and the friction plate, completely solving the problem of rigid collision of the traditional rigid stop, and avoiding the situation that the active guide block is deformed and blocked in the passive guide rail during collision and cannot move.

[0023] II. Through the circular combination of the fixed sealing frame and the movable sealing frame, the present invention realizes a dual mechanism of a rigid frame plus an elastic buffer, effectively blocking the intrusion of rainwater and dust. Moreover, the movable sealing frame is connected to the fixed sealing frame through a sealing spring, and the rubber ring at the top of the movable sealing frame adopts a nitrogen-filled design, enabling the sealing structure to have dynamic self-adaptive ability. When the skylight glass expands and contracts due to temperature changes, the movable sealing frame can slide along the height direction of the fixed sealing frame, and the elastic deformation of the sealing spring compensates for the displacement deviation at the edge of the glass, ensuring that the sealing interface always remains in a compressed state.

[0024] III. The innovative linkage design of the limiting unit and the sealing component realizes a technical breakthrough in self-locking of the sealing state. When the skylight is closed, the rubber ring is deformed under pressure, and the internal nitrogen is filled into the limiting airbag through a pipeline. The airbag expands to push the pawl to rotate and engage with the C-shaped groove. It can not only prevent the movable sealing frame from displacing during vehicle jolts, but also limit the position of the active guide block with the pawl, avoiding the unexpected opening of the skylight during vehicle jolts.

[0025] IV. The microporous copper-based gasket of the present application can automatically adjust the release amount of the lubricating liquid according to temperature. When the temperature generated by friction is low, it indicates that there is still a lubricant playing a lubricating role between the active guide block and the passive guide rail. Therefore, there is no need to release or release a small amount of lubricant. When the lubricant is lacking between the two, the heat generated by the sliding friction between the two will promote the large release of the lubricant, thus ensuring that the fluctuation of the sliding resistance of the active guide block does not exceed a predetermined threshold, and the entire process does not require manual maintenance, reducing the use cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The present invention will be further described below in conjunction with the drawings and embodiments.

[0027] Figure 1 It is a schematic diagram of the main structure of the present invention.

[0028] Figure 2 It is a schematic diagram of the structure between the passive guide rail, the active guide block, the C-shaped groove and the driving groove of the present invention.

[0029] Figure 3 It is a schematic diagram of the structure between the passive guide rail, the active guide block and the pawl of the present invention.

[0030] Figure 4 It is a schematic diagram of the first perspective structure of the limiting component of the present invention.

[0031] Figure 5 It is a schematic diagram of the second perspective structure of the limiting component of the present invention.

[0032] Figure 6 It is a schematic diagram of the third perspective structure of the limiting component of the present invention.

[0033] Figure 7 It is a schematic structural diagram between the movable seal frame with a strip-shaped structure and the rubber ring of the present invention.

[0034] Figure 8 It is a schematic structural diagram between the movable seal frame with a right-angled structure and the rubber ring of the present invention.

[0035] Figure 9 It is the present invention Figure 8 An enlarged view of the partial structure at A in it.

[0036] Figure 10 It is a schematic structural diagram between the seal component and the limit unit of the present invention.

[0037] Figure 11 It is a schematic structural diagram between the active guide block, the friction plate and the micro-pore copper-based liner of the present invention.

[0038] Figure 12 It is a schematic structural diagram between the surface layer, the intermediate layer and the bottom layer of the present invention.

[0039] Explanation of reference numerals: 1, passive guide rail; 2, active guide block; 3, seal component; 4, limit component; 10, U-shaped groove; 11, drive groove; 12, guide strip; 13, water filter hole; 40, limit strip-shaped groove; 41, ceramic piece; 42, centralized mounting plate; 43, right-angle lever; 44, wedge block; 45, return tension spring; 46, return compression spring; 47, friction plate; 30, fixed seal frame; 31, movable seal frame; 32, seal spring; 33, rubber ring; 5, limit unit; 50, pawl; 51, limit pawl groove; 52, limit airbag; 6, micro-pore copper-based liner; 60, surface layer; 61, intermediate layer; 62, bottom layer. Detailed implementation manners

[0040] The following Figures 1-12 is a further detailed description of this application.

[0041] The embodiment of this application discloses a highly tight automobile sunroof guide rail with a limiting function; it relates to the technical field of automobile parts.

[0042] First of all, in the existing technology, the traditional active guide block 2 is slidably arranged on the passive guide rail 1. When the active guide block 2 moves, limit devices are provided at both ends of the passive guide rail 1. Therefore, when the active guide block 2 moves to the specified position at a uniform speed, it will hit the limit device to realize the limitation of the active guide block 2. However, in this process, with the long-term opening and closing of the skylight and the influence of the high temperature weather in summer every year, the active guide block 2 will frequently hit the limit device and deform. Over time, the two ends of the active guide block 2 are deformed and the width direction becomes longer, causing the active guide block 2 to contact the side wall of the passive guide rail 1 and affect its sliding smoothness. What's worse, the active guide block 2 is cracked, and the vibration generated by its movement causes fragments to fall into the passive guide rail 1 and become stuck.

[0043] Secondly, the limiting effect of the existing device is poor. The limiting effect of the limiting device gradually fails as the number of times the sunroof is opened increases. Moreover, as the number of times the sunroof is opened increases, the lubrication effect of its upper end will be greatly reduced, resulting in greater wear when the sunroof is subsequently started and stopped, and then causing shaking and abnormal noise during the opening and closing process of the sunroof.

[0044] Therefore, the present application proposes a high-tightness automobile sunroof guide rail with a limiting function to solve the above problems.

[0045] Reference Figure 1 As shown, a high-tightness automobile sunroof guide rail with a limiting function includes a window opened on the automobile roof, a movable groove connected to the window is provided on the automobile roof, a passive guide rail 1 for controlling the opening and closing of the window is provided in the movable groove, and an active guide block 2 located in the movable groove is also slidably provided on the passive guide rail 1, and the active guide block 2 is provided with a sunroof that is received in the movable groove and seals the automobile roof window.

[0046] A window is opened on the roof of the car, and a movable groove connected to the window is provided inside the roof. The movable groove provides space for the installation of the sunroof and guide rails. Its shape and size are optimized according to the roof structure to ensure that the sunroof does not interfere with other parts of the roof when opening and closing.

[0047] A sealing component 3 and a limiting component 4 are respectively provided on both sides of the passive guide rail 1. The sealing component 3 is used to improve the sealing between the car roof window and the glass set on the guide rail, and the limiting component 4 is used to realize the moving distance of the car sunroof guide rail. A dynamic tightness protection mechanism is also provided in the middle of the guide rail to prevent the active guide block 2 and the sunroof from shaking.

[0048] The movement of the active guide block 2 drives the sunroof to open and close, and its sliding performance directly affects the smoothness of the sunroof's operation. The sunroof glass is fixedly connected to the active guide block 2 to ensure synchronous movement.

[0049] The passive guide rail 1 is made of aluminum alloy and is fixed to the bottom of the movable groove by bolts. During installation, ensure that the U-shaped groove 10 at the top of the passive guide rail 1 is parallel to the length direction of the movable groove, and the drive groove 11 at the bottom faces the inside of the vehicle roof to facilitate the subsequent installation of the drive device. The distance between the two ends of the passive guide rail 1 serves as the travel space for the skylight to move.

[0050] The top of the passive guide rail 1 is provided with a U-shaped groove 10 for the active guide block 2 to slide, and the bottom of the passive guide rail 1 is provided with a drive groove 11 for driving the active guide block 2 to move.

[0051] The U-shaped groove 10 at the top of the passive guide rail 1 forms a multi-faceted contact with the sliding card slot of the active guide block 2, restricting the sway of the active guide block 2 perpendicular to the moving direction. The cross-sectional dimensions of the U-shaped groove 10 are precisely matched with those of the active guide block 2 to ensure the minimization of the sliding gap.

[0052] The top of the passive guide rail 1 is provided with a U-shaped groove 10 for the active guide block 2 to slide, and the bottom is provided with a drive groove 11 for driving the active guide block 2 to move. A drive device (such as a traction wire harness driven by a motor) can be connected into the drive groove 11 to achieve the power transmission of the active guide block 2.

[0053] In the prior art, the start and stop of the skylight are as follows: Start the motor to drive the active guide block 2 to reciprocate on the passive guide rail 1 and test the opening and closing functions of the skylight. The results show that: the skylight opens and closes smoothly without jamming; at the end of the stroke, the moving speed of the active guide block 2 gradually decreases to 0 without obvious impact sound, the limit position is accurate, and the repeat positioning accuracy is within a reasonable range.

[0054] Refer to Figure 2 、 Figure 3 and Figure 4 As shown, specifically, the limit component 4 includes limit strip-shaped grooves 40 opened on both sides of the head and tail of the passive guide rail 1. A ceramic sheet 41 is slidably installed in the limit strip-shaped groove 40 of the passive guide rail 1. By synchronously moving the two groups of ceramic sheets 41, the side wall of the active guide block 2 is clamped, thereby reducing the speed and limiting the movement of the active guide block 2.

[0055] Limit strip-shaped grooves 40 are opened on both sides of the head and tail of the passive guide rail 1, and a ceramic sheet 41 is slidably installed in the groove. The ceramic sheet 41 has the characteristics of high hardness and good wear resistance. When the two groups of ceramic sheets 41 move synchronously, they can clamp the side wall of the active guide block 2. When the active guide block 2 approaches the limit position, the ceramic sheet 41 contacts the friction sheet 47 on the active guide block 2, and the speed is reduced through the frictional force to avoid the rigid collision of the traditional rigid stop.

[0056] Look at Figure 4 、 Figure 5 and Figure 6As shown, several ceramic sheets 41 on one side of the passive guide rail 1 are arranged on a centralized mounting plate 42, and the end of the centralized mounting plate 42 away from the ceramic sheets 41 is hinged to a right-angle lever 43. The side of the right-angle lever 43 away from the centralized mounting plate 42 is arranged in the driving groove 11 at the bottom of the passive guide rail 1, and the middle part of the right-angle lever 43 is hinged to the side wall of the passive guide rail 1, and wedge blocks 44 are slidably installed at the head and tail ends of the passive guide rail 1.

[0057] This lever structure can convert the displacement in the driving slot 11 into a clamping force of the ceramic sheet 41 , thereby achieving force amplification and transmission.

[0058] The inclined surfaces of the wedge block 44 are relatively distributed, and a reset spring 45 is installed between the bottom of the wedge block 44 and the inner wall of the driving groove 11 of the passive guide rail 1, and the side of the right-angle lever 43 away from the centralized mounting plate 42 is located directly below the wedge block 44.

[0059] Wedge blocks 44 are slidably mounted at the front and rear ends of the passive guide rail 1, with the two wedge blocks 44 having inclined surfaces facing each other. A return spring 45 is installed between the bottom of the wedge block 44 and the inner wall of the drive slot 11. Under normal conditions, the return spring 45 maintains the wedge block 44 in its initial position. When the active guide block 2 moves close to the limit end, the power of the drive unit is transmitted to the right-angle lever 43, pushing the wedge block 44 to move. The inclined surface of the lever rotates the lever 43, driving the central mounting plate 42 and the ceramic plate 41 toward the active guide block 2, achieving clamping and limiting.

[0060] During specific implementation, in the initial state, the sunroof is in a closed state. When the sunroof needs to be opened to the maximum stroke, the active guide block 2 slides along the length direction of the passive guide rail 1, and then the active guide block 2 squeezes the inclined surface of the wedge block 44. After being subjected to the pressure of external force, the wedge block 44 moves downward along the height direction of the passive guide rail 1, and then the wedge block 44 squeezes one side of the two right-angle levers 43 at its bottom. The two right-angle levers 43 move outward synchronously after being squeezed, and the other ends of the two right-angle levers 43 approach each other due to the lever principle. When the two approach each other, the active guide block 2 is squeezed through the centralized mounting plate 42, so that the ceramic plate 41 on the centralized mounting plate 42 contacts the friction plate 47 on the active guide block 2, thereby limiting the active guide block 2 and reducing its speed until it stops moving.

[0061] Reference Figure 5 and Figure 6 As shown, specifically, the inclined surfaces of the wedge block 44 are relatively distributed, a reset spring 45 is installed between the bottom of the wedge block 44 and the inner wall of the driving groove 11 of the passive guide rail 1, and the right-angle lever 43 is located directly below the wedge block 44 on the side away from the centralized mounting plate 42.

[0062] Wedge blocks 44 are slidably mounted at the front and rear ends of the passive guide rail 1, with the two wedge blocks 44 having inclined surfaces facing each other. A return spring 45 is installed between the bottom of the wedge block 44 and the inner wall of the drive slot 11. Under normal conditions, the return spring 45 maintains the wedge block 44 in its initial position. When the active guide block 2 moves close to the limit end, the power of the drive unit is transmitted to the right-angle lever 43, pushing the wedge block 44 to move. The inclined surface of the lever rotates the lever 43, driving the central mounting plate 42 and the ceramic plate 41 toward the active guide block 2, achieving clamping and limiting.

[0063] Reference Figure 6 As shown, specifically, sliding slots are provided on both sides of the active guide block 2, and friction plates 47 corresponding to the ceramic plates 41 are slidably inserted into the sliding slots of the active guide block 2; the contact portion between the ceramic plate 41 and the friction plate 47 is provided with a micro-concave-convex structure.

[0064] A friction plate 47 corresponding to the ceramic plate 41 is installed in the sliding slot of the active guide block 2. The contact area between the friction plate 47 and the ceramic plate 41 is provided with a micro-concave-convex structure. These concave-convex structures form multiple points of contact during the sliding process, increase the damping force, and suppress the lateral shaking of the active guide block 2.

[0065] Reference Figure 7 、 Figure 8 and Figure 9 As shown, specifically, the sealing component 3 includes a fixed sealing frame 30 and a movable sealing frame 31. Two groups of fixed sealing frames 30 are installed on the upper end surface of the passive guide rail 1, and the fixed sealing frames 30 are in a strip shape and are distributed parallel to the passive guide rail 1. The other two groups of fixed sealing frames 30 are installed at the head and tail ends of the passive guide rail 1 and are distributed perpendicularly thereto. The four groups of fixed sealing frames 30 are in a circular distance, and the movable sealing frame 31 is slidably installed on the fixed sealing frame 30 along the height direction of the fixed sealing frame 30, and a sealing spring 32 is provided between the movable sealing frame 31 and the fixed sealing frame 30, and a rubber ring 33 filled with sealing gas is installed on the top of the movable sealing frame 31.

[0066] The four groups of fixed sealing frames 30 distributed in a zigzag pattern are independently installed with right-angle fixed sealing frames 30 at the four corners, and the strip-shaped fixed sealing frames 30 are connected to the right-angle fixed sealing frames 30 .

[0067] Reference Figure 7 and Figure 8As shown, the sealing component 3 adopts a composite structure combining a fixed sealing frame 30 and a movable sealing frame 31; the four groups of fixed sealing frames 30 are distributed in a rectangular shape. Two groups of strip-shaped fixed sealing frames 30 are installed on the upper end surface of the passive guide rail 1 and are parallel to the passive guide rail 1; the other two groups of vertically distributed fixed sealing frames 30 are installed at the head and tail ends of the passive guide rail 1, and the fixed sealing frames 30 with a right-angle structure are installed separately at the four corners to ensure the integrity of the rectangular structure. The fixed sealing frame 30 provides an installation basis for the movable sealing frame 31, and its material is made of high-strength engineering plastic, which combines rigidity and weather resistance.

[0068] The sealing spring 32 provides an elastic force, so that the movable sealing frame 31 always presses against the edge of the skylight glass through the rubber ring 33. A rubber ring 33 filled with a sealing gas is installed on the top of the movable sealing frame 31. The rubber ring 33 is made of ethylene propylene diene monomer rubber and has good aging resistance. The sealing gas (such as nitrogen) can improve the elastic deformation ability of the rubber ring 33 and enhance the sealing effect.

[0069] Through the rectangular combination of the fixed sealing frame 30 and the movable sealing frame 31, the present invention realizes a dual mechanism of a rigid frame plus elastic buffering. The rectangular structure completely fits the edge of the roof window, blocking the intrusion paths of rainwater and dust in the spatial dimension. And the movable sealing frame 31 is connected to the fixed sealing frame 30 through the sealing spring 32, making the sealing structure have dynamic self-adaptive ability. When the skylight glass expands and contracts due to temperature changes, the movable sealing frame 31 can slide along the height direction of the fixed sealing frame 30, and the elastic deformation of the sealing spring 32 compensates for the displacement deviation of the glass edge, ensuring that the sealing interface always remains in a pressed state.

[0070] Refer to Figure 9 and Figure 10 As shown, the rubber ring 33 on the top of the movable sealing frame 31 adopts a nitrogen-filled design, which significantly improves the sealing reliability. When the vehicle encounters wind pressure fluctuations during driving, the gas pressure in the rubber ring 33 can automatically balance the internal and external pressure differences, avoiding the deformation failure problem of the traditional sealing rubber strip caused by unilateral pressure.

[0071] The innovative linkage design of the limiting unit 5 and the sealing component 3 realizes a technical breakthrough in self-locking of the sealing state. When the skylight is closed, the rubber ring 33 is deformed under pressure, and the internal nitrogen is filled into the limiting airbag 52 through the pipeline. The airbag expands and pushes the pawl 50 to rotate and engage with the U-shaped groove 10. It can not only prevent the movable sealing frame 31 from displacing during vehicle bumps, but also limit the position of the pawl 50 to the active guide block 2, avoiding the accidental opening of the skylight during vehicle bumps.

[0072] Look at Figure 10As shown in the figure, a limiting unit 5 for placing the displacement of the active guide block 2 is installed at the position of the rubber ring 33. The limiting unit 5 includes a pawl 50 hinged and installed in the length direction of the passive guide rail 1, and a limiting pawl groove 51 for the pawl 50 to be hinged is opened on the passive guide rail 1.

[0073] A limiting airbag 52 is installed on the inner side wall of the movable sealing frame 31 corresponding to the position of the pawl 50, and the limiting airbag 52 is connected to the rubber ring 33 through a pipeline.

[0074] During specific implementation, in the initial state, a torsion spring is provided at the rotation connection of the pawl 50, so that the pawl 50 is initially away from the position of the U-shaped groove 10 on the passive guide rail 1 for the active guide block 2 to slide. When the sunroof is closed, the rubber ring 33 is deformed under pressure, and the internal gas enters the limiting airbag 52 through the pipeline. The airbag expands and pushes the pawl 50 to rotate, making it snap into the U-shaped groove 10. At this time, the pawl 50 is inserted into the passive guide rail 1 to prevent the active guide block 2 from shifting due to the vibration generated during the driving of the vehicle, and it can further consolidate the sealing state of the sunroof.

[0075] Refer to Figure 11 and Figure 12 As shown in the figure, specifically, a microporous copper-based gasket 6 is further provided on the side wall of the active guide block 2. The microporous copper-based gasket 6 is composed of a sandwich structure, which includes a surface layer 60, an intermediate layer 61 and a bottom layer 6, the surface layer 60 is a U-shaped frame structure, the intermediate layer 61 is a sponge-shaped metal block formed by pressing copper powder, the bottom layer 62 is a stainless steel plate, the intermediate layer 61 is located between the surface layer 60 and the bottom layer 62, and the surface layer 60 and the bottom layer 62 are clamped and arranged.

[0076] The microporous copper-based gasket 6 is embedded at the bottom of the active guide block 2.

[0077] The microporous copper-based gasket 6 is embedded on the side wall of the active guide block 2 and adopts a sandwich structure. Among them Surface layer 60: U-shaped frame structure, made of wear-resistant stainless steel material, provides support for the intermediate layer 61 to prevent the leakage of lubricant.

[0078] Intermediate layer 61: A sponge-shaped metal block formed by pressing copper powder, has a rich microporous structure, can store lubricant. The high thermal conductivity of the copper powder enables the intermediate layer 61 to quickly respond to temperature changes and adjust the release amount of the lubricant.

[0079] Bottom layer 62: Stainless steel plate, fixedly connected to the bottom of the active guide block 2 to enhance the overall strength of the gasket.

[0080] When the temperature rises, the release amount of the lubricant in the micropores of the intermediate layer 61 increases due to thermal expansion, reducing the sliding resistance; when the temperature drops, the release amount decreases, avoiding the loss of lubricant, realizing self-adaptive lubrication, and ensuring the dynamic tightness between the active guide block 2 and the passive guide rail 1.

[0081] In specific implementation, when there is lubricating liquid between the passive guide rail 1 and the active guide block 2, the friction between the two is small during the reciprocating sliding process, and no high temperature is generated during the opening and closing process. Therefore, the temperature cannot be transferred to the middle layer 61 through the surface layer 60 and the bottom layer 62, so the paste lubricant stored in the sponge-like metal block of the middle layer 61 will not dissolve; however, when there is lubricant between the passive guide rail 1 and the active guide block 2, after the lubricant is gradually consumed as the two work, there will be a lack of lubricant between the two. At this time, when the active guide block 2 moves on the passive guide rail 1, a large amount of heat will be generated due to friction. At this time, the heat is quickly transferred to the middle layer 61, causing the paste lubricant stored in the middle layer 61 to dissolve, and then the melt flows out from the gap between the surface layer 60 and the bottom layer 62, and lubricates the passive guide rail 1 and the active guide block 2.

[0082] The microporous copper-based liner 6 of the present application can automatically adjust the release amount of lubricating liquid according to the temperature. When the temperature generated by friction is low, it means that there is still lubricant between the active guide block 2 and the passive guide rail 1 to play a lubricating role, so there is no need to release or release a small amount of lubricant. When there is a lack of lubricant between the two, the heat generated by the sliding friction between the two will prompt a large amount of lubricant to be released, thereby ensuring that the sliding resistance fluctuation of the active guide block 2 does not exceed the predetermined threshold, and the entire process does not require manual maintenance, reducing the cost of use, and indirectly improving the overall service life of the guide rail system of the present application.

[0083] During operation: Step 1, in the initial state, the sunroof is in a closed state. When the sunroof needs to be opened to the maximum stroke, the active guide block 2 slides along the length direction of the passive guide rail 1, and then the active guide block 2 squeezes the inclined surface of the wedge block 44. The wedge block 44 moves downward along the height direction of the passive guide rail 1 after being subjected to the pressure of the external force, and then the wedge block 44 squeezes one side of the two right-angle levers 43 at its bottom. The two right-angle levers 43 move outward synchronously after being squeezed, and the other ends of the two right-angle levers 43 approach each other due to the lever principle. When the two approach each other, the active guide block 2 is squeezed through the centralized mounting plate 42, so that the ceramic piece 41 on the centralized mounting plate 42 contacts the friction plate 47 on the active guide block 2, thereby limiting the active guide block 2 and reducing its speed until it stops moving, and vice versa.

[0084] Step 2: After the sunroof is closed, the fixed sealing frame 30 and the movable sealing frame 31 are combined in a circular shape to realize a dual mechanism of a rigid frame and an elastic buffer. The movable sealing frame 31 and the rubber ring 33 are in contact with the sunroof, and the rubber ring 33 is deformed under pressure. The circular structure fits perfectly with the edge of the roof window, blocking the intrusion path of rainwater and dust from a spatial dimension.

[0085] The third step: Meanwhile, the rubber ring 33 is compressed and deformed, and the nitrogen gas inside is filled into the limit airbag 52 through the pipeline. The airbag expands to push the pawl 50 to rotate and engage into the U-shaped groove 10. It can not only prevent the movable sealing frame 31 from displacing during vehicle bumping, but also limit the position of the active guide block 2 by the pawl 50 to avoid the unexpected opening of the sunroof during vehicle bumping.

[0086] The embodiments of this specific implementation manner are all preferred embodiments of the present invention, and do not limit the protection scope of the present invention accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present invention shall be covered within the protection scope of the present invention.

Claims

1. Highly compact automobile sunroof guide rail with position limiting function, characterized by: It includes a window opened on the car roof. There is an active slot connected to the window on the car roof. A passive guide rail (1) for controlling the opening and closing of the window is provided in the active slot. An active guide block (2) located in the active slot is also slidably provided on the passive guide rail (1). A sunroof that is housed in the active slot and seals the car roof window is provided on the active guide block (2). Sealing components (3) and limiting components (4) are respectively provided on both sides of the passive guide rail (1). The sealing components (3) are used to improve the sealing performance between the car roof window and the glass provided on the guide rail, and the limiting components (4) are used to achieve the moving distance of the car sunroof guide rail. A U-shaped slot (10) for the active guide block (2) to slide is opened at the top of the passive guide rail (1), and a driving slot (11) for driving the active guide block (2) to move is opened at the bottom of the passive guide rail (1).

2. The high-tightness automobile sunroof guide rail with a limiting function according to claim 1 is characterized in that: The limiting components (4) include limiting strip-shaped slots (40) opened on both sides in the length direction of the passive guide rail (1). A ceramic sheet (41) is slidably installed in the limiting strip-shaped slots (40) of the passive guide rail (1). The clamping of the side wall of the active guide block (2) is achieved by the synchronous movement of the two groups of ceramic sheets (41), so as to slow down and limit the movement of the active guide block (2). Several ceramic sheets (41) on one side of the passive guide rail (1) are provided on a centralized mounting plate (42). A right-angle lever (43) is hinged at one end of the centralized mounting plate (42) away from the ceramic sheets (41). The side of the right-angle lever (43) away from the centralized mounting plate (42) is located in the driving slot (11) at the bottom of the passive guide rail (1), and the middle of the right-angle lever (43) is hinged on the side wall of the passive guide rail (1). Wedge-shaped blocks (44) are slidably installed at both ends of the passive guide rail (1).

3. The high-tightness automobile sunroof guide rail with a limiting function according to claim 2 is characterized in that: The part of the wedge-shaped block (44) located at the upper end of the passive guide rail (1) is of an inclined surface structure, and the part of the wedge-shaped block (44) located at the lower end of the passive guide rail (1) is of a trapezoidal inclined surface structure. A return tension spring (45) is installed between the bottom of the wedge-shaped block (44) and the inner wall of the driving slot (11) of the passive guide rail (1). And the side of the right-angle lever (43) away from the centralized mounting plate (42) is located directly below the wedge-shaped block (44). A return compression spring (46) is provided between the centralized mounting plate (42) and the passive guide rail (1).

4. The high-tightness automobile sunroof guide rail with a limiting function according to claim 1 is characterized in that: Sliding card slots are opened on both sides of the active guide block (2). Friction sheets (47) corresponding to the ceramic sheets (41) are slidably inserted and installed in the sliding card slots of the active guide block (2). Micro-convex and concave structures are provided at the parts where the ceramic sheets (41) and the friction sheets (47) contact each other.

5. The high-tightness automobile sunroof guide rail with a limiting function according to claim 1 is characterized in that: The sealing component (3) includes a fixed sealing frame (30) and a movable sealing frame (31). Two groups of fixed sealing frames (30) are installed on the upper end surface of the passive guide rail (1), and the fixed sealing frame (30) is strip-shaped and distributed parallel to the passive guide rail (1). Additionally, two other groups of fixed sealing frames (30) are installed at the head and tail ends of the passive guide rail (1) and are distributed perpendicular to it. The four groups of fixed sealing frames (30) are in a rectangular shape. The movable sealing frame (31) is slidably installed on the fixed sealing frame (30) along the height direction of the fixed sealing frame (30), and a sealing spring (32) is provided between the movable sealing frame (31) and the fixed sealing frame (30). A rubber ring (33) filled with sealing gas is installed on the top of the movable sealing frame (31).

6. The high-tightness automobile sunroof guide rail with a limiting function according to claim 5, characterized in that: At the four corners of the four groups of fixed sealing frames (30) distributed in a rectangular shape, fixed sealing frames (30) with a right-angle structure are separately installed, and the strip-shaped fixed sealing frame (30) is connected to the fixed sealing frame (30) with a right-angle structure. A rubber ring (33) is also provided on the fixed sealing frame (30) with a right-angle structure, and the rubber ring (33) on the fixed sealing frame (30) with a right-angle structure and the rubber ring (33) on the strip-shaped fixed sealing ring are interlinked with each other.

7. The high-tightness automobile sunroof guide rail with a limiting function according to claim 6, characterized in that: At the position of the rubber ring (33), a limiting unit (5) for preventing the active guide block (2) from shifting is installed. The limiting unit (5) includes a pawl (50) hingedly installed in the length direction of the passive guide rail (1), and a limiting pawl groove (51) for the pawl (50) to be hinged is opened on the passive guide rail (1). A limiting airbag (52) is installed on the inner side wall of the movable sealing frame (31) corresponding to the position of the pawl (50), and the limiting airbag (52) is connected to the rubber ring (33) through a pipeline.

8. The high-tightness automobile sunroof guide rail with a limiting function according to claim 1, characterized in that: A microporous copper-based gasket (6) is also provided on the side wall of the active guide block (2). The microporous copper-based gasket (6) is composed of a sandwich structure, which includes a surface layer (60), an intermediate layer (61), and a bottom layer (62). The surface layer (60) is a U-shaped frame structure, the intermediate layer (61) is a sponge-like metal block formed by pressing copper powder, and the bottom layer (62) is a stainless steel plate. The intermediate layer (61) is located between the surface layer (60) and the bottom layer (62), and the surface layer (60) and the bottom layer (62) are snap-connected.

9. The high-tightness automobile sunroof guide rail with a limiting function according to claim 1, characterized in that: The microporous copper-based gasket (6) is embedded at the bottom of the active guide block (2).

10. The high-tightness automobile sunroof guide rail with a limiting function according to claim 1, characterized in that: On one side of the passive guide rail (1), a guiding strip (12) for guiding rainwater is also provided, and a water filtering hole (13) is opened on the guiding strip (12).

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