Anti-disengagement device, glass assembly and vehicle

Abstract

An anti-disengagement device (100), a glass assembly and a vehicle. The anti-disengagement device comprises a mounting base (10); a synchronous pulley (20), the synchronous pulley (20) being rotatably arranged on the mounting base (10), and the synchronous pulley (20) being configured to have a synchronous belt (200) wrapped therearound, such that the synchronous pulley (20) is in transmission fit with the synchronous belt (200); and an anti-disengagement blocking plate (30), the anti-disengagement blocking plate (30) being arranged on the mounting base (10), and the anti-disengagement blocking plate (30) being arranged to surround the outer side of the synchronous belt (200), so as to limit movement of the synchronous belt (200) away from the synchronous pulley (20) in a first direction.

Description

Anti-detachment device, glass assembly and vehicle

[0001] This application claims priority to Chinese Patent Application No. 202411889634.7, filed on December 20, 2024, entitled "Anti-detachment device, canopy assembly and vehicle", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the technical field of timing belt anti-detachment, and in particular to an anti-detachment device, a glass assembly, and a vehicle. Background Technology

[0003] Synchronous belts are widely used in industries such as machinery and automobiles due to their advantages of good transmission efficiency, low noise, and high transmission accuracy. Synchronous belts are typically used in conjunction with synchronous pulleys and are belt-shaped components used to transmit power. However, in practical use, several problems need to be addressed: Synchronous belts have extremely strict requirements for machining and installation dimensional accuracy. If there are installation deviations, or if the synchronous belt undergoes tensile deformation due to prolonged stress during use, insufficient tension and a loose fit between the synchronous belt and the pulley can lead to the synchronous belt skipping teeth or dislodging from the pulley during operation, affecting transmission stability. Summary of the Invention

[0004] Therefore, it is necessary to provide an anti-slip device, a glass assembly, and a vehicle to address the problem of timing belt skipping or slipping, which affects transmission stability.

[0005] A first aspect of this application provides an anti-detachment device, comprising:

[0006] Mounting base;

[0007] A timing pulley, rotatably mounted on the mounting base, the timing pulley being wound around a timing belt to enable the timing pulley to engage with the timing belt for transmission; and

[0008] An anti-detachment baffle is disposed on the mounting base and surrounds the outside of the synchronous belt to restrict the synchronous belt from moving away from the synchronous pulley in a first direction.

[0009] This anti-detachment device is applied in transmission applications where the synchronous belt and pulley are assembled. It prevents the synchronous belt from skipping teeth or coming off, improving the installation reliability of the synchronous belt and pulley. Specifically, the pulley is mounted on a mounting base and has rotational freedom. The synchronous belt is wound around the outside of the pulley, with the teeth of the belt meshing with the teeth of the pulley. An anti-detachment baffle is then installed on the mounting base, positioned close to the pulley, so that it surrounds the outside of the synchronous belt. In this way, even if the pulley drives the synchronous belt to rotate and there is a loose edge, or if the synchronous belt itself has installation deviations or tensile deformation, the anti-detachment baffle prevents the synchronous belt from moving away from the pulley in the first direction. Therefore, the synchronous belt cannot loosen from the pulley, preventing skipping teeth or coming off. This ensures that the synchronous belt and pulley always effectively mesh and that the transmission is reliable and stable.

[0010] A second aspect of this application also provides a glass assembly comprising: a glass; a sunshade disposed on the side of the glass facing the interior of the vehicle, the sunshade being capable of obscuring or opening the glass, the sunshade being connected to a timing belt; a power source; and an anti-detachment device as described above, the anti-detachment device being configured in cooperation with the timing belt, the timing belt being wound around the timing pulley, and the power source being drively connected to the timing pulley.

[0011] A third aspect of this application also provides a vehicle comprising a body and a glass assembly as described above, the glass assembly being mounted on the body.

[0012] Details of one or more embodiments of this application are set forth in the following drawings and description. Other features, objects, and advantages of this application will become apparent from the specification, drawings, and claims. Attached Figure Description

[0013] To better describe and illustrate embodiments and / or examples of this application, reference may be made to one or more accompanying drawings. Additional details or examples used to describe the drawings should not be considered as limiting the scope of any of the disclosed applications, the currently described embodiments and / or examples, or the best mode of these applications as currently understood.

[0014] Figure 1 is an assembly structure diagram of the anti-detachment device and the timing belt according to an embodiment of this application.

[0015] Figure 2 is a schematic diagram of the anti-detachment baffle in Figure 1 in an explosive state.

[0016] Figure 3 is a schematic diagram of the structure of the anti-detachment baffle and the synchronous belt enclosure in one embodiment.

[0017] Figure 4 is an exploded view of the mounting base and synchronous pulley in one embodiment.

[0018] Figure 5 is a schematic diagram of the structure of a synchronous belt pulley according to an embodiment.

[0019] Figure 6 is an exploded structural diagram of a tensioning mechanism according to an embodiment.

[0020] Figure 7 is a schematic diagram of the structure of a glass assembly according to an embodiment.

[0021] Figure 8 is a magnified view of the structure at point A in Figure 7.

[0022] Figure 9 is a schematic diagram of the installation structure of the elastic structure in the first embodiment.

[0023] Figure 10 is a schematic diagram of the installation structure of the elastic structure in the second embodiment.

[0024] Figure 11 is a schematic diagram of the structure of the elastic structure and anti-detachment baffle, which can be rotated to any angle position of the synchronous pulley.

[0025] Figure 12 is a schematic diagram of the installation structure of the elastic structure in the third embodiment.

[0026] Figure 13 is a schematic diagram of the installation structure of the elastic structure in the fourth embodiment.

[0027] Explanation of reference numerals in the attached drawings: 100, anti-detachment device; 10, mounting base; 11, mounting platform; 111, positioning protrusion; 111a, first positioning protrusion; 111b, second positioning protrusion; 112, threaded hole; 12, shaft hole; 13, platform; 131, guide hole; 20, synchronous pulley; 21, wheel axle; 22, wheel body; 23, first baffle; 24, second baffle; 25, wheel groove; 26, tooth groove; 30, anti-detachment baffle; 31, mounting block; 311, positioning groove; 311a, first positioning groove; 311b, second positioning groove; Positioning groove; 312, through hole; 32, baffle body; 321, concave side; 40, threaded component; 50, tensioning mechanism; 51, elastic element; 52, tensioning column; 521, arc-shaped protrusion; 522, slot; 53, stop spring; 60, elastic structure; 61, elastic body; 61a, first elastic body; 61b, second elastic body; 62, support column; 63, first limiting column; 64, second limiting column; 200, synchronous belt; 300, sunshade; 400, power source; 1000, glass assembly. Detailed Implementation

[0028] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings. Preferred embodiments of this application are shown in the drawings. However, this application can be implemented in many different forms and is not limited to the embodiments described herein. It should be understood that these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this application.

[0029] This application provides a vehicle that can be any type of mature model in the prior art, such as a sedan, SUV, MPV, etc., and can be a gasoline vehicle, a pure electric vehicle, a hybrid electric vehicle, etc., and can be flexibly selected according to actual needs.

[0030] The vehicle includes at least a body and a glass assembly 1000, with the glass assembly 1000 mounted on the body.

[0031] For example, the glass assembly 1000 can be a panoramic sunroof assembly. A panoramic sunroof assembly refers to the complete components of an automotive panoramic sunroof, including glass modules, sunshade assemblies, controller assemblies, and motor assemblies. The main function of the panoramic sunroof assembly is to provide lighting and decorative effects for the vehicle interior, while simultaneously regulating light and temperature through the sunshade 300 and the controller. Of course, in other optional embodiments, the glass assembly 1000 can also refer to a windshield assembly, a rear windshield assembly, etc., and can be flexibly selected according to actual needs.

[0032] As shown in Figure 7, in one embodiment of this application, the glass assembly 1000 includes glass, a sunshade 300, a power source 400, and an anti-detachment device 100. The sunshade 300 is located on the side of the glass facing the vehicle interior, meaning it is positioned inside the vehicle. This allows the sunshade 300 to be protected by the outside of the glass and also facilitates its operation and cleaning. The sunshade 300 can cover or open the glass and is connected to a synchronous belt 200. The anti-detachment device 100 is configured to cooperate with the synchronous belt 200, which is wound around a synchronous pulley 20. The power source 400 is connected to the synchronous pulley 20 for transmission.

[0033] For example, when the sunshade 300 is open, the power source 400 drives the synchronous pulley 20 to rotate clockwise. The synchronous pulley 20 drives the synchronous belt 200 and the sunshade 300 to move towards the open glass. However, at this time, the portion of the synchronous belt 200 above the synchronous pulley 20 may become loose. Conversely, when the sunshade 300 is closed, the power source 400 drives the synchronous pulley 20 to rotate counterclockwise. The synchronous pulley 20 drives the synchronous belt 200 and the sunshade 300 to move towards the closed glass. However, at this time, the portion of the synchronous belt 200 below the synchronous pulley 20 may become loose. This phenomenon of the synchronous belt 200 becoming loose is commonly known as the "slack-edge phenomenon." If left unchecked, the synchronous belt 200 is very likely to jump off the synchronous pulley 20. To address this, this application uses an anti-loosening device 100 installed near the synchronous belt 200 to intervene in the loosening of the synchronous belt 200, thereby effectively solving the aforementioned jumping problem. Optionally, the power source 400 may be, but is not limited to, an electric motor, a combination of an electric motor and a reducer, etc.

[0034] Specifically, please refer to Figures 1 and 2, which illustrate an anti-slip device 100 according to an embodiment of this application. The device includes a mounting base 10, a synchronous pulley 20, and an anti-slip baffle 30. The synchronous pulley 20 is rotatably mounted on the mounting base 10 and is wound around a synchronous belt 200 to enable transmission between the pulley 20 and the belt 200. It is understood that the synchronous pulley 20 and the belt 200 mesh with synchronous teeth to prevent slippage and ensure stable transmission.

[0035] An anti-detachment baffle 30 is disposed on the mounting base 10 and surrounds the outside of the synchronous belt 200 to restrict the synchronous belt 200 from moving away from the synchronous pulley 20 in a first direction. Specifically, the anti-detachment baffle 30 surrounds the outside of the arc-shaped portion of the synchronous belt 200 that wraps around the synchronous pulley 20, that is, the synchronous belt 200 is located between the anti-detachment baffle 30 and the synchronous pulley 20. For example, the first direction specifically refers to the X-axis direction. That is, the anti-detachment baffle 30 can restrict the synchronous belt 200 from moving radially outward from the synchronous pulley 20, thereby preventing the synchronous belt 200 from jumping off.

[0036] In summary, implementing the technical solution of this embodiment will achieve the following beneficial effects: the anti-detachment device 100 of this solution is applied in the transmission working situation after the synchronous belt 200 and the synchronous pulley 20 are assembled, in order to prevent the synchronous belt 200 from skipping teeth or coming off, and improve the installation reliability of the synchronous belt 200 and the synchronous pulley 20.

[0037] Specifically, the synchronous pulley 20 is mounted on the mounting base 10 and has rotational freedom. The synchronous belt 200 is wound around the outside of the synchronous pulley 20, and the teeth of the synchronous belt 200 mesh with the teeth of the synchronous pulley 20. Then, the anti-detachment baffle 30 is installed on the mounting base 10 and brought close to the synchronous pulley 20, so that the anti-detachment baffle 30 can surround the outside of the synchronous belt 200. In this way, even if the synchronous pulley 20 drives the synchronous belt 200 to rotate and there is a loose side, or if the synchronous belt 200 itself has installation deviation or tensile deformation, the anti-detachment baffle 30 has the function of preventing the synchronous belt 200 from moving away from the synchronous pulley 20 in the first direction. Therefore, the synchronous belt 200 cannot loosen from the synchronous pulley 20, and thus there will be no problem of tooth skipping or loosening. This ensures that the synchronous belt 200 can always effectively mesh with the synchronous pulley 20 and the transmission is reliable, thus ensuring the stability of the transmission.

[0038] In this application, the main function of the mounting base 10 is to bear the load generated during the operation of the sunshade 300, prevent the synchronous pulley 20 from shifting left or right or forward or backward under force, and ensure the positional accuracy and fit of each component. For example, the mounting base 10 can be made of plastic or metal; preferably, the material of the mounting base 10 is PA66-GF30. In actual installation, it can be installed and fixed to the glass edging by at least one of the following methods: screwing, snap-fitting, welding, riveting, or bonding.

[0039] Please continue to refer to Figures 1 and 2. In an optional embodiment, the mounting base 10 is provided with a mounting platform 11. The anti-detachment baffle 30 includes a mounting block 31 and a baffle body 32 connected to each other. The mounting block 31 is disposed on the mounting platform 11. The baffle body 32 has an arc-shaped structure. The concave side 321 of the baffle body 32 is disposed towards the synchronous pulley 20, and the concave side 321 of the baffle body 32 is used to make clearance fit with the synchronous belt 200.

[0040] The mounting block 31 is designed to connect with the mounting platform 11, which allows the anti-detachment baffle 30 to be fixed as a whole onto the mounting base 10. The mounting platform 11 is located on the side of the baffle body 32 away from the synchronous pulley 20 and the synchronous belt 200, thus avoiding interference. Since the synchronous pulley 20 and the portion of the synchronous belt 200 wrapped around the synchronous pulley 20 are both convex arc-shaped, the baffle body 32 is designed as an arc-shaped structure, with the concave side 321 of the baffle body 32 facing the synchronous belt 200 and fitting with the synchronous belt 200 with a clearance. This creates a better containment effect, with a larger containment area for the synchronous belt 200 and a better anti-detachment effect. In addition, while playing the role of preventing detachment, it also helps to constrain the arc shape of the synchronous belt 200, so that the synchronous belt 200 and the synchronous pulley 20 maintain more teeth meshing during operation, preventing the synchronous belt 200 from skipping teeth or detaching during the rotation of the synchronous pulley 20.

[0041] It should be noted that during the operation of the sunshade 300, the rotation of the synchronous pulley 20 drives the synchronous belt 200 to rotate. The synchronous belt 200 may exhibit a loose or slack side. If the synchronous belt 200 becomes loose, the number of teeth meshing between the synchronous belt 200 and the synchronous pulley 20 will be insufficient. Furthermore, since the teeth of the synchronous belt 200 are flexible, when the number of meshing teeth is low, the operating resistance of the sunshade 300 exceeds the rigidity of the synchronous belt 200 teeth, making the teeth prone to rigid deformation. This results in slippage between the synchronous belt 200 and the synchronous pulley 20 (i.e., tooth skipping). If the loosening is more severe, the synchronous belt 200 may even jump off the synchronous pulley 20 and fall off. The arc-shaped baffle body 32 effectively solves this technical problem. In this application, the material of the anti-slip baffle 30 can be plastic or metal. For example, the material of the anti-slip baffle 30 is PA66-GF30.

[0042] Please refer to Figure 3. In order to ensure that the anti-detachment baffle 30 has a good anti-detachment effect on the synchronous belt 200, while not contacting the synchronous belt 200 to cause friction, wear and movement interference, the distance t between the concave side 321 of the baffle body 32 and the outer side of the synchronous belt 200 is designed to be 0.1mm to 0.9mm. For example, in this application, the distance t can be 0.1mm, 0.2mm, 0.3mm, 0.4mm, 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm and so on.

[0043] It should be noted that the selection of the value of t is related to the tooth height of the synchronous belt. Specifically, if the tooth height of the synchronous belt is set to h, then t = (1 / 2 to 1 / 6)h. For example, in this application, t = 1 / 4h can be selected.

[0044] Furthermore, in order to facilitate the quick and reliable assembly and fixing of the mounting platform 11 and the mounting block 31, in one embodiment, one of the mounting platform 11 and the mounting block 31 is provided with a positioning protrusion 111, and the other of the mounting platform 11 and the mounting block 31 is provided with a positioning groove 311, and the positioning protrusion 111 is engaged in the positioning groove 311.

[0045] Please refer to Figures 1 and 2. Preferably, based on the above embodiment, the mounting platform 11 is provided with a first positioning protrusion 111a and a second positioning protrusion 111b. The first positioning protrusion 111a and the second positioning protrusion 111b are arranged at intervals. The mounting block 31 is provided with a first positioning groove 311a and a second positioning groove 311b. The opening of the first positioning groove 311a and the opening of the second positioning groove 311b are arranged opposite to each other. The first positioning protrusion 111a is engaged in the first positioning groove 311a, and the second positioning protrusion 111b is engaged in the second positioning groove 311b. On the one hand, the two sets of snap-fit ​​structures, namely the first positioning protrusion 111a snapping with the first positioning groove 311a and the second positioning protrusion 111b snapping with the second positioning groove 311b, can further improve the assembly strength and firmness of the mounting platform 11 and the mounting block 31. On the other hand, since the groove openings of the first positioning groove 311a and the second positioning groove 311b are set back (i.e., facing opposite directions), the two sets of snap-fit ​​structures form a mutual limiting effect, which can effectively prevent the mounting block 31 from loosening or shifting in one direction, while not affecting the containment effect of the baffle body 32 on the synchronous belt 200.

[0046] Please refer to Figures 1 and 2. Further, based on any of the above embodiments, the anti-detachment device 100 also includes a fixing member, and the mounting block 31 is mounted on the mounting platform 11 via the fixing member. This allows the anti-detachment baffle 30 to be assembled and fixed with the mounting base 10. Specifically, in one embodiment, the fixing member includes a threaded component 40. The mounting platform 11 has a threaded hole 112, and the mounting block 31 has a through hole 312 opposite to the threaded hole 112. The threaded component 40 passes through the through hole 312 and is screwed into the threaded hole 112 to screw and fix the mounting block 31 to the mounting platform 11. Using the threaded component 40 to lock and fix the mounting block 31 to the mounting platform 11 further improves the installation strength and stability of the anti-detachment baffle 30, preventing the anti-detachment baffle 30 from loosening due to environmental vibrations during vehicle operation.

[0047] It should be noted that the above embodiments correspond to a scheme in which the anti-detachment baffle 30 and the mounting base 10 are separate structures.

[0048] Referring to Figure 8, in another embodiment, the anti-detachment device 100 further includes an elastic structure 60, through which the anti-detachment baffle 30 is mounted on the mounting base 10, allowing the anti-detachment baffle 30 to elastically float relative to the timing belt 200 in a first direction. More specifically, the anti-detachment baffle 30 is integrally formed with the mounting base 100 via the elastic structure 60.

[0049] Therefore, during production and processing, the anti-detachment baffle 30 can be first installed and fixed on the mounting base 10 through the elastic structure 60. With the help of the elastic extension force provided by the elastic structure 60, the anti-detachment baffle 30 can be pushed in the first direction to compress and deform the elastic structure 60, thereby freeing up sufficient space for the installation of the timing pulley 20 and timing belt 200 on the mounting base 10, preventing interference between the anti-detachment baffle 30 and the timing pulley 20 and timing belt 200, and thus effectively reducing the installation difficulty of the timing pulley 20 and timing belt 200.

[0050] Understandably, pushing the anti-detachment baffle 30 in the first direction to compress the elastic structure 60 also moves the anti-detachment baffle 30 away from the area on the mounting base 10 used to install the timing pulley 20. After the timing pulley 20 and the timing belt 200 are installed, simply loosening the anti-detachment baffle 30 allows the elastic restoring force of the elastic structure 60 to automatically push the anti-detachment baffle 30 back to its original position, so that the anti-detachment baffle 30 is close to and covers the outside of the timing belt 200 portion on the timing pulley 20, preventing the timing belt 200 from loosening from the timing pulley 20, which could lead to skipped teeth or falling off.

[0051] Furthermore, in one embodiment of this application, the anti-detachment baffle 30, the elastic structure 60, and the mounting base 10 are integrally injection molded structures. Because they are processed into an integral structure using injection molding, the anti-detachment baffle 30, the elastic structure 60, and the mounting base 10 have high bonding strength, excellent overall structural performance, and good durability. At the same time, this reduces the number of parts, reduces installation steps, eliminates the need for preliminary development work on the parts, lowers product manufacturing costs, and improves product production efficiency.

[0052] Please refer to Figure 11. In order to meet the product design requirements and installation layout needs of different anti-detachment devices 100, in one embodiment, with the axle 21 line of the synchronous pulley 20 as the rotation center, the anti-detachment baffle 30 and the elastic structure 60 can be rotated to any angle position of the synchronous pulley 20.

[0053] Please continue referring to Figure 9. For example, in an optional embodiment, the elastic structure 60 includes an elastic body 61, one end of which is connected to the mounting base 10, and the other end of which is connected to the anti-detachment baffle 30. By means of the corresponding connection between the two ends of the elastic body 61 and the anti-detachment baffle 30 and the mounting base 10, the elastic body 61 supports and positions the anti-detachment baffle 30 at a preset height on the surface of the mounting base 10, so that the anti-detachment baffle 30 can obtain an elastic floating stroke. On this basis, the elastic element 51 gives the anti-detachment baffle 30 elastic floating capability, thereby facilitating the anti-detachment baffle 30 to move and avoid obstacles to install the synchronous pulley 20 and the synchronous belt 200, and driving the anti-detachment baffle 30 to reset itself after the synchronous pulley 20 and the synchronous belt 200 are installed, ensuring the anti-detachment baffle 30's anti-detachment limiting capability against the synchronous belt 200.

[0054] Please refer to Figure 10. Further, based on the above embodiment, the elastic body 61 has an arc-shaped structure. Both ends of the elastic body 61 are disposed on the mounting base 10. The concave side of the elastic body 61 is spaced apart from the mounting base 10, and the convex side of the elastic body 61 is connected to the anti-detachment baffle 30. The simultaneous connection of both ends of the elastic body 61 to the mounting base 10 can improve the connection strength and firmness between the elastic body 61 and the mounting base 10. On this basis, the convex side of the elastic body 61 is connected to the anti-detachment baffle 30 so that the elastic body 61 can provide better elastic support to the anti-detachment baffle 30.

[0055] Please refer to Figure 10. In addition, based on the above embodiment, the elastic structure 60 also includes a support column 62. One end of the support column 62 is connected to the anti-detachment baffle 30, and the other end of the support column 62 is connected to the convex side of the elastic body 61.

[0056] By using support columns 62 to connect the anti-detachment baffle 30 and the elastic body 61, the elastic body 61 forms an installation support for the anti-detachment baffle 30 through the support columns 62, giving the anti-detachment baffle 30 elastic floating ability. At the same time, the support columns 62 make good use of the distance between the anti-detachment baffle 30 and the mounting base 10, so that the size of the arc-shaped elastic body 61 does not need to be too large. This avoids the elastic body 61 taking up too much installation space and increasing the difficulty of installing the anti-detachment device 100, while also avoiding the elastic body 61's structural strength being affected by its excessive size, thus weakening the elastic support ability of the elastic body 61 for the anti-detachment baffle 30.

[0057] To achieve better elastic performance of the elastic structure 60, this application specifies the relevant dimensions of the elastic structure 60. For example, in one embodiment, the elastic body 61 is a thin-walled component with a thickness of 0.5 mm to 1 mm. Specifically, the thickness of the elastic body 61 can be 0.5 mm, 0.6 mm, 0.7 mm, 0.8 mm, 0.9 mm, 1 mm, etc.

[0058] By selecting the thickness of the elastomer 61 within this dimensional range, the stiffness and elasticity of the elastomer 61 can be balanced, ensuring that the elastomer 61 can effectively support the anti-slip baffle 30 and prevent the timing belt 200 from skipping teeth and falling off during operation. Furthermore, the length of the support column 62 is 0mm to 30mm. For example, the length of the support column 62 can be 5mm, 10mm, 15mm, 20mm, 25mm, etc. Selecting the length of the support column 62 within this dimensional range ensures that the size of the arc-shaped elastomer 61 is neither too large nor too small, allowing the elastomer 61 to simultaneously obtain sufficient support strength and elastic support performance.

[0059] Please refer to Figure 12. In another optional embodiment, the elastic body 61 has an arc-shaped structure, and both its concave and convex sides are arranged in a direction intersecting the elastic floating direction of the anti-detachment baffle 30. Compared to the above embodiment, the elastic body 61 in this embodiment can also provide reliable elastic support for the anti-detachment baffle 30. The difference lies in that the elastic body 61 in this embodiment is connected to the mounting base 10 at one end and to the anti-detachment baffle 30 at the other end, and the convex and concave sides are oriented differently. This makes the molding structure of the elastic body 61 in this embodiment simpler, the arrangement easier, and eliminates the need for the support column 62, thereby reducing manufacturing difficulty and cost. It should be noted that the elastic floating direction of the anti-detachment baffle 30 is specifically indicated by arrow S in Figure 12.

[0060] Please continue to refer to Figure 12. Further, based on the above embodiment, the elastic body 61 includes a first elastic body 61a and a second elastic body 61b. One end of the first elastic body 61a and the second elastic body 61b are both connected to the mounting base 10, and the other end of the first elastic body 61a and the second elastic body 61b are both connected to the anti-detachment baffle 30.

[0061] Both the first elastic body 61a and the second elastic body 61b are arc-shaped structures. The convex side of the first elastic body 61a and the convex side of the second elastic body 61b are arranged facing each other, and the concave side of the first elastic body 61a and the concave side of the second elastic body 61b are arranged facing away from each other.

[0062] By using a first elastic body 61a and a second elastic body 61b to simultaneously connect the mounting base 10 and the anti-detachment baffle 30, the support balance and support strength of the anti-detachment baffle 30 can be increased. When the anti-detachment baffle 30 is pressed and when the pressing force is removed, the anti-detachment baffle 30 can better elastically expand and contract along a straight path, so that the anti-detachment baffle 30 can more effectively provide installation clearance for the synchronous pulley 20 and the synchronous belt 200, and quickly move and reset after the synchronous pulley 20 and the synchronous belt 200 are installed, thus providing protection for the synchronous belt 200.

[0063] Please continue to refer to Figure 12. Further, based on the above embodiment, the elastic structure 60 also includes a first limiting post 63. A gap is formed between the convex side of the first elastic body 61a and the convex side of the second elastic body 61b. The first limiting post 63 is arranged in the gap, and one end of the first limiting post 63 is connected to the anti-detachment baffle 30. The other end of the first limiting post 63 is spaced from the mounting base 10 to form a floating stroke.

[0064] During installation, when the anti-disengagement baffle 30 moves to the floating stroke, the first limit post 63 can form an abutment limit with the mounting base 10 to prevent irreversible damage to the elastic structure 60 caused by overpressure.

[0065] Please refer to Figure 13. In another optional embodiment, the elastic structure 60 includes an elastic body 61, which is annular. The outer walls of the two opposite sides of the elastic body 61 are respectively connected to the anti-detachment baffle 30 and the mounting base 10. The annular elastic body 61 also possesses excellent elastic deformation capabilities, thus effectively supporting the anti-detachment baffle 30 to elastically extend and float, meeting the need for interference-free and convenient installation of the synchronous pulley 20 and the synchronous belt 200.

[0066] For example, in one embodiment, the elastic body 61 has an elliptical structure, and the elastic floating direction of the anti-detachment baffle 30 relative to the mounting base 10 is consistent with the minor axis direction of the elliptical structure; the second limiting post 64 extends along the minor axis direction of the elliptical structure. Arranging the elliptical elastic body 61 in the above spatial posture makes it easier for the elastic body 61 to contract and deform under pressure, and to quickly recover its deformation after the pressure is removed, so that the anti-detachment baffle 30 can effectively protect the synchronous belt 200.

[0067] Please refer to Figure 13. Further, the elastic structure 60 also includes a second limiting post 64. One end of the second limiting post 64 is connected to the elastic body 61 and / or the anti-detachment baffle 30, and the other end of the second limiting post 64 is spaced from the inner wall surface of the elastic body 61 to form a floating stroke. Similarly, by setting the second limiting post 64, irreversible structural damage to the elastic body 61 due to overpressure can be prevented, ensuring the structural safety of the elastic structure 60. Optionally, the first limiting post 63 and the second limiting post 64 described above can be integrally formed or detachably assembled; the specific choice can be made flexibly according to actual needs, and no specific limitation is made here.

[0068] It should be noted that in the embodiments where the anti-detachment baffles are integrated structures, in order to ensure that the anti-detachment baffle 30 has a good anti-detachment effect on the synchronous belt 200, while not contacting the synchronous belt 200 to cause friction, wear, and motion interference, the anti-detachment baffle 30 has an arc-shaped structure. The distance t between the concave side of the anti-detachment baffle 30 and the outer side of the synchronous belt 200 is designed to be 0.1mm to 0.9mm. For example, in this application, the distance t can be 0.1mm, 0.2mm, 0.3mm, 0.4mm, 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm, etc.

[0069] To ensure that the anti-detachment baffle 30 effectively prevents the synchronous belt 200 mounted on the synchronous pulley 20 from skipping teeth and falling off, in one embodiment, the anti-detachment baffle 30 has an arc-shaped structure with an arc length of L, where π*d1 / 2>L≥3*d. Here, d1 is the diameter of the tooth tip circle of the synchronous pulley 20; d is the groove width of the tooth groove 26, i.e., the tooth spacing between two adjacent teeth. This ensures that the anti-detachment baffle 30 covers the synchronous belt 200 on the synchronous pulley 20 with a sufficiently large coverage length, thereby more effectively preventing the synchronous belt 200 from skipping teeth or falling off during operation. For example, the arc length L of the anti-detachment baffle 30 can range from 5mm to 30mm. Specifically, L can be 5mm, 10mm, 15mm, 20mm, 25mm, 30mm, etc.

[0070] Please refer to Figure 10 further. The curvature of the anti-derailment baffle 30 is calculated as d² / 2 + ha + t. Where d² is the diameter of the root circle of the synchronous pulley 20; ha is the thickness of the synchronous belt 200; and t is the distance between the anti-derailment baffle 30 and the synchronous belt 200. This arrangement ensures that the curvature of the anti-derailment baffle 30 is equal to that of the synchronous pulley 20, allowing the anti-derailment baffle 30 to more completely and effectively conform to the synchronous belt 200 wound around the synchronous pulley 20, thus ensuring the protective effect of the anti-derailment baffle 30 on the synchronous belt 200.

[0071] Please refer to Figures 4 and 5. In this application, the mounting base 10 has a shaft hole 12. The synchronous pulley 20 includes a connected axle 21 and a pulley body 22. The axle 21 is rotatably disposed in the shaft hole 12, and the pulley body 22 is used to wrap around the synchronous belt 200. The axle 21 is inserted into the shaft hole 12 to obtain rotational freedom, so that the synchronous pulley 20 can be driven to rotate by a motor, thereby driving the synchronous belt 200 to move, and the synchronous belt 200 in turn drives the sunshade 300 to move, thereby realizing the opening or closing operation of the sunshade 300.

[0072] Furthermore, a first baffle 23 and a second baffle 24 are protruding from the circumferential surface of the wheel body 22. Both the first baffle 23 and the second baffle 24 extend radially outward from the wheel body 22, and are spaced apart axially along the wheel body 22 to form a wheel groove 25. The wheel groove 25 is used to accommodate the synchronous belt 200, and the first baffle 23 and the second baffle 24 are used to restrict the synchronous belt 200 from loosening in the second direction. That is, by means of the blocking effect of the first baffle 23 and the second baffle 24, the synchronous belt 200 can be prevented from shifting along the second direction on the synchronous pulley 20, thus preventing the synchronous belt 200 from jumping off. For example, the second direction can refer to the Y-axis direction, or it can be understood as the axial direction of the synchronous pulley 20.

[0073] Please refer to Figure 5. Further, based on the above embodiment, multiple first baffles 23 are provided, spaced apart along the circumference of the wheel body 22. Multiple second baffles 24 are also provided, spaced apart along the circumference of the wheel body 22. The first baffles 23 and second baffles 24 are staggered in the circumference of the wheel body 22. Preferably, the multiple first baffles 23 and multiple second baffles 24 are staggered one-to-one in the circumference of the wheel body 22. On the one hand, as the synchronous pulley 20 rotates, the first baffle 23 and the second baffle 24, located in different positions, can continuously block and limit the synchronous belt 200, ensuring that the synchronous belt 200 will not move along the Y-axis and thus jump off. On the other hand, compared with the symmetrical structure design of the first baffle 23 and the second baffle 24 in the traditional technology, the first baffle 23 and the second baffle 24 in this solution form an asymmetrical structure design with the first baffle 23 and the second baffle 24 offset in the circumferential direction. This not only makes it easier to demold and reduces mold costs, but also because the symmetrical structure design requires demolding in four directions, while the asymmetrical design only requires demolding in two directions. Moreover, the asymmetrical structure arrangement allows the parting line to avoid the tooth profile, improving the accuracy of the tooth surface.

[0074] As shown in Figure 5, it is easy to understand that the circumferential surface of the synchronous pulley 20 is provided with toothed grooves 26, which are used to mesh with the teeth on the inner surface of the synchronous belt 200. The meshing transmission structure formed by the toothed grooves 26 and the teeth ensures the stability and transmission efficiency of the transmission and avoids slippage.

[0075] Please refer to Figures 1, 2, and 6. Furthermore, based on any of the above embodiments, the anti-detachment device 100 also includes a tensioning mechanism 50. The tensioning mechanism 50 is mounted on the mounting base 10 and is positioned on the side of the synchronous pulley 20 away from the anti-detachment baffle 30. The tensioning mechanism 50 abuts against the synchronous belt 200 to tension the synchronous belt 200 along a third direction. By tensioning the synchronous belt 200 along a third direction using the tensioning mechanism 50, the slack state of the synchronous belt 200 can be improved, making the connection between the synchronous belt 200 and the synchronous pulley 20 more secure and effective, ensuring effective transmission between the synchronous pulley 20 and the synchronous belt 200. For example, the third direction specifically refers to the Z-axis direction in Figure 2. Optionally, the tensioning mechanism 50 can be located below, above, or inside the synchronous belt 200; the specific choice depends on actual needs and is not specifically limited here.

[0076] Specifically, in one optional embodiment, the mounting base 10 is provided with a platform 13, which is located on the side of the synchronous pulley 20 away from the anti-detachment baffle 30. The tensioning mechanism 50 includes an elastic element 51 and a tensioning column 52. The elastic element 51 is located on the platform 13, and the tensioning column 52 abuts against the elastic element 51, allowing the tensioning column 52 to elastically abut against the synchronous belt 200. The compressed elastic element 51 applies an elastic thrust to the tensioning column 52, enabling the tensioning column 52 to tighten the synchronous belt 200 in a third direction, thereby improving the slack state of the synchronous belt 200 and tensioning it. Furthermore, since the tensioning column 52 elastically abuts against the synchronous belt 200, it can prevent excessive compressive force from being applied to the synchronous belt 200, which could lead to deformation or even damage. For example, the elastic element 51 can be any one of, but not limited to, a spring, a sheet, or an elastic column, and can be flexibly selected according to actual needs.

[0077] Furthermore, the platform 13 is provided with guide holes 131, which extend through opposite sides of the platform 13. The tensioning column 52 is telescopically slidably inserted into the guide holes 131. Depending on the installation position of different synchronous belts 200 and the different states of slack of the synchronous belts 200, the tensioning column 52 can telescopically slide within the guide holes 131, and with the help of the elastic force provided by the elastic element 51, it can meet the tensioning needs of different synchronous belts 200, thereby improving the performance and applicability of the tensioning mechanism 50. In particular, the guide holes 131 are designed as limiting holes, which restrict the circumferential rotation of the tensioning column 52 within the limiting holes. The shape and size of the cross-section of the tensioning column 52 are adapted to the shape and size of the cross-section of the limiting hole.

[0078] For example, in this application, the guide hole 131 is a cross-shaped hole, and the tensioning column 52 is a cross-shaped rod. This can prevent the tensioning column 52 from rotating in the guide hole 131 during the rotation of the synchronous belt 200, which would affect the tensioning reliability of the tensioning column 52 on the synchronous belt 200. At the same time, it can prevent the tensioning column 52 from generating rotational friction wear on the synchronous belt 200, which helps to ensure the service life of the synchronous belt 200.

[0079] In this application, the tensioning column 52 is provided with an arc-shaped protrusion 521, which is used to slide against the timing belt 200. This design reduces the frictional resistance and wear between the tensioning column 52 and the timing belt 200 while achieving good tension, thereby increasing the service life of the timing belt 200 and reducing the motor load and power consumption.

[0080] To prevent the tensioning column 52 from completely disengaging from the guide hole 131 under the elastic force of the elastic element 51, in one embodiment, the tensioning mechanism 50 further includes a stop spring 53. The end of the tensioning column 52 away from the arc-shaped protrusion 521 is provided with a groove 522. The stop spring 53 is engaged in the groove 522 and can be limited and abutted against the platform 13.

[0081] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0082] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims, and the specification and drawings can be used to interpret the content of the claims.

Claims

1. An anti-detachment device, characterized in that, include: Mounting base; A timing pulley is rotatably mounted on the mounting base and is used to be wound around a timing belt so that the timing pulley and the timing belt drive together. as well as An anti-detachment baffle is disposed on the mounting base and surrounds the outside of the synchronous belt to restrict the synchronous belt from moving away from the synchronous pulley in a first direction.

2. The anti-detachment device according to claim 1, characterized in that, The mounting base is provided with a mounting platform. The anti-detachment baffle includes a mounting block and a baffle body connected to each other. The mounting block is disposed on the mounting platform. The baffle body has an arc-shaped structure. The concave side of the baffle body is disposed towards the synchronous pulley, and the concave side of the baffle body is used to make clearance fit with the synchronous belt. The mounting platform is located on the side of the baffle body away from the synchronous pulley and the synchronous belt.

3. The anti-detachment device according to claim 2, characterized in that, The distance t between the concave side of the baffle body and the outer side of the synchronous belt ranges from 0.1 mm to 0.9 mm.

4. The anti-detachment device according to claim 3, characterized in that, One of the mounting platform and the mounting block is provided with a positioning protrusion, and the other of the mounting platform and the mounting block is provided with a positioning groove, and the positioning protrusion is engaged in the positioning groove.

5. The anti-detachment device according to claim 4, characterized in that, The mounting platform is provided with a first positioning protrusion and a second positioning protrusion, which are arranged at intervals. The mounting block is provided with a first positioning groove and a second positioning groove, with the openings of the first positioning groove and the second positioning groove facing away from each other. The first positioning protrusion is engaged in the first positioning groove, and the second positioning protrusion is engaged in the second positioning groove.

6. The anti-detachment device according to claim 3, characterized in that, The anti-detachment device also includes a fixing component, and the mounting block is mounted on the mounting platform via the fixing component.

7. The anti-detachment device according to claim 6, characterized in that, The fastener includes a threaded component, the mounting platform has a threaded hole, the mounting block has a through hole opposite to the threaded hole, and the threaded component passes through the through hole and is screwed into the threaded hole to screw and fix the mounting block to the mounting platform.

8. The anti-detachment device according to claim 1, characterized in that, The anti-detachment device further includes an elastic structure, and the anti-detachment baffle is mounted on the mounting base through the elastic structure so that the anti-detachment baffle can elastically float relative to the timing belt along the first direction.

9. The anti-detachment device according to claim 8, characterized in that, The anti-detachment baffle, the elastic structure, and the mounting base are integrally injection molded structures.

10. The anti-detachment device according to claim 8, characterized in that, With the axis of the synchronous pulley as the center of rotation, the anti-derailment baffle and the elastic structure can be rotated to any angular position of the synchronous pulley.

11. The anti-detachment device according to claim 8, characterized in that, The elastic structure includes an elastomer, one end of which is connected to the mounting base, and the other end of which is connected to the anti-detachment baffle.

12. The anti-detachment device according to claim 11, characterized in that, The elastic body has an arc-shaped structure, with both ends of the elastic body disposed on the mounting base. The concave side of the elastic body is spaced apart from the mounting base, and the convex side of the elastic body is connected to the anti-detachment baffle.

13. The anti-detachment device according to claim 12, characterized in that, The elastic structure also includes a support column, one end of which is connected to the anti-detachment baffle, and the other end of which is connected to the convex side of the elastic body.

14. The anti-detachment device according to claim 13, characterized in that, The thickness of the elastomer is 0.5 mm to 1 mm; And / or, the length of the support column is 0mm to 30mm.

15. The anti-detachment device according to claim 11, characterized in that, The elastic body has an arc-shaped structure, and both the concave and convex sides of the elastic body are arranged in a direction that intersects with the elastic floating direction of the anti-detachment baffle.

16. The anti-detachment device according to claim 15, characterized in that, The elastomer includes a first elastomer and a second elastomer, one end of each of the first elastomer and the second elastomer is connected to the mounting base, and the other end of each of the first elastomer and the second elastomer is connected to the anti-detachment baffle. Both the first elastic body and the second elastic body are arc-shaped structures. The convex side of the first elastic body and the convex side of the second elastic body are arranged facing each other, and the concave side of the first elastic body and the concave side of the second elastic body are arranged facing away from each other.

17. The anti-detachment device according to claim 16, characterized in that, The elastic structure further includes a first limiting post, a gap is formed between the convex side of the first elastic body and the convex side of the second elastic body, the first limiting post is arranged in the gap, one end of the first limiting post is connected to the anti-detachment baffle, and the other end of the first limiting post is spaced from the mounting seat to form a floating stroke.

18. The anti-detachment device according to claim 8, characterized in that, The elastic structure includes an elastic body, which is a ring structure, and the outer wall surfaces of the two opposite sides of the elastic body are respectively connected to the anti-detachment baffle and the mounting base.

19. The anti-detachment device according to claim 18, characterized in that, The elastic structure further includes a second limiting post, one end of which is connected to the elastic body and / or the anti-detachment baffle, and the other end of which is spaced from the inner wall surface of the elastic body to form a floating stroke.

20. The anti-detachment device according to claim 19, characterized in that, The elastic body has an elliptical structure, and the elastic floating direction of the anti-detachment baffle relative to the mounting base is consistent with the minor axis direction of the elliptical structure; The second limiting post extends along the minor axis of the elliptical structure.

21. The anti-detachment device according to claim 8, characterized in that, The anti-detachment baffle has an arc-shaped structure, and the distance t between the concave side of the anti-detachment baffle and the outer side of the synchronous belt ranges from 0.1mm to 0.9mm.

22. The anti-detachment device according to any one of claims 1 to 21, characterized in that, The mounting base has a shaft hole, and the synchronous belt pulley includes a wheel axle and a pulley body connected to each other. The wheel axle is rotatably disposed in the shaft hole, and the pulley body is used to be wound with the synchronous belt.

23. The anti-detachment device according to claim 22, characterized in that, The wheel body has a first baffle and a second baffle protruding from its circumferential surface. The first baffle and the second baffle both extend outward along the radial direction of the wheel body, and the first baffle and the second baffle are spaced apart along the axial direction of the wheel body to form a wheel groove. The wheel groove is used to accommodate the timing belt, and the first baffle and the second baffle are used to restrict the timing belt from loosening in the second direction.

24. The anti-detachment device according to claim 23, characterized in that, Multiple first baffles are provided, and the multiple first baffles are arranged at intervals along the circumference of the wheel body. Multiple second baffles are provided, and the multiple second baffles are arranged at intervals along the circumference of the wheel body. The first baffles and the second baffles are staggered in the circumference of the wheel body.

25. The anti-detachment device according to any one of claims 1 to 21, characterized in that, The anti-derailment device further includes a tensioning mechanism, which is disposed on the mounting base and arranged on the side of the synchronous pulley away from the anti-derailment baffle. The tensioning mechanism is used to abut against the synchronous belt to tension the synchronous belt in a third direction.

26. The anti-detachment device according to claim 25, characterized in that, The mounting base is provided with a platform, which is located on the side of the synchronous pulley away from the anti-derailment baffle. The tensioning mechanism includes an elastic element and a tensioning column. The elastic element is located on the platform, and the tensioning column abuts against the elastic element, so that the tensioning column can elastically abut against the synchronous belt.

27. The anti-detachment device according to claim 26, characterized in that, The platform is provided with guide holes, which are arranged through the opposite sides of the platform, and the tensioning column is telescopically slidably inserted into the guide holes.

28. The anti-detachment device according to claim 27, characterized in that, The guide hole is set as a limiting hole, which is used to restrict the tensioning column to rotate circumferentially within the limiting hole. The shape and size of the cross-section of the tensioning column are respectively adapted to the shape and size of the cross-section of the limiting hole.

29. The anti-detachment device according to claim 26, characterized in that, The tensioning column has an arc-shaped protrusion, which is used to slide against the timing belt.

30. The anti-detachment device according to claim 29, characterized in that, The tensioning mechanism also includes a stop spring. The end of the tensioning column away from the arc-shaped protrusion is provided with a groove. The stop spring is engaged in the groove and abuts against the platform for limiting.

31. The anti-detachment device according to claim 1, characterized in that, The circumferential surface of the synchronous pulley is provided with toothed grooves, which are used to mesh with the teeth on the inner surface of the synchronous belt.

32. The anti-detachment device according to claim 31, characterized in that, The anti-detachment baffle has an arc-shaped structure, and the arc length of the anti-detachment baffle is set as L, and π*d1 / 2>L≥3*d; Wherein, d1 is the diameter of the tooth tip circle of the synchronous pulley; d is the width of the tooth groove.

33. The anti-detachment device according to claim 32, characterized in that, The radius of the anti-detachment baffle is d² / 2 + ha + t; Wherein, d2 is the diameter of the root circle of the synchronous pulley; ha is the thickness of the synchronous belt; t is the distance between the anti-detachment baffle and the timing belt.

34. A glass assembly, characterized in that, include: Glass; A sunshade is provided on the side of the glass facing the interior of the vehicle. The sunshade can cover or open the glass. The sunshade is connected to a synchronous belt. Power source; as well as The anti-detachment device as described in any one of claims 1 to 33, wherein the anti-detachment device is configured to cooperate with the synchronous belt, the synchronous belt is wound around the synchronous pulley, and the power source is connected to the synchronous pulley for transmission.

35. A vehicle, characterized in that, include: Body; as well as The glass assembly as claimed in claim 34 is mounted on the vehicle body.

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