An electrically powered guideway device, a seat assembly, a center console, and an automobile

Abstract

The application relates to the technical field of vehicles and provides an electric guide rail device, a seat assembly, a central armrest box and a car. The electric guide rail device comprises a sliding rail assembly, a driving part, a belt transmission assembly and a connecting piece. The sliding rail assembly comprises a first sliding rail arranged on a seat body or an armrest box body and a second sliding rail arranged on a car body floor. The first sliding rail and the second sliding rail are in sliding fit. The belt transmission assembly comprises a driving wheel, a belt pulley and a synchronous belt. At least part of the synchronous belt is arranged in the second sliding rail. The synchronous belt is wound around the driving wheel and the belt pulley. The driving part is connected with the driving wheel and is used for driving the driving wheel to rotate. The synchronous belt is connected with the first sliding rail. The central shafts of the driving wheel and the belt pulley are arranged in a vertical direction. The application makes the sliding action of the first sliding rail relative to the second sliding rail more smooth, reserves sufficient foot space for rear passengers, and provides convenience for the arrangement and assembly of the belt transmission assembly and the driving part.

Description

Technical Field

[0001] This invention relates to the field of vehicle technology, and more specifically, to an electric guide rail device, a seat assembly, a center armrest box, and an automobile. Background Technology

[0002] Electric sliding rail devices are typically used to enable movable devices within a car, such as car seats, to move relative to the car's floor in the front-to-back or left-to-right direction. These devices mainly include an upper sliding rail connected to the bottom of the seat body, a lower sliding rail fixed to the car floor, a drive motor, and a transmission structure. The transmission structure includes an internal thread (or gear) on the upper sliding rail and a lead screw (or rack) on the lower sliding rail. The rotation of the drive motor, through the transmission between the internal thread (or gear) and the lead screw (or rack), enables the upper sliding rail to move relative to the lower sliding rail.

[0003] However, due to the meshing connection between the various components of the metal parts such as gears and racks installed on the upper and lower slide rails, noise is generated during the movement of the seat body relative to the vehicle floor, and the sliding is not smooth due to assembly tolerance factors. Summary of the Invention

[0004] The problem addressed by this invention is how to reduce noise and uneven sliding caused by assembly tolerance factors during the movement of movable devices such as seats relative to the vehicle floor within a car.

[0005] To address the aforementioned problems, the present invention provides an electric guide rail device, comprising a slide rail assembly, a drive unit, and a belt drive assembly. The slide rail assembly includes a first slide rail disposed on the seat body or armrest box body and a second slide rail disposed on the vehicle floor, wherein the first slide rail and the second slide rail are slidably engaged. The belt drive assembly includes a drive wheel, a pulley, and a timing belt, wherein at least a portion of the timing belt is disposed within the second slide rail, and the timing belt is wound around the drive wheel and the pulley. The drive unit is connected to the drive wheel for driving the drive wheel to rotate, and the timing belt is connected to the first slide rail.

[0006] The central axes of both the drive wheel and the pulley are set in the vertical direction.

[0007] Optionally, the second slide rail includes a slide rail body and a pulley fixing member, the pulley fixing member being disposed on the side of the slide rail body, and at least a portion of the belt drive assembly being disposed on the pulley fixing member.

[0008] Optionally, the pulley fixing component includes a pulley mounting base and a protective cover. The pulley mounting base is disposed at the end of the protective cover along the extension direction of the second slide rail. The pulley is mounted on the pulley mounting base, and the drive wheel and the pulley are disposed on the protective cover.

[0009] Optionally, the second slide rail includes at least two slide rail bodies, which are spaced apart along an extension direction perpendicular to themselves. The number of the drive unit and the timing belt is one. The pulley fixing member has a cavity, and at least a portion of the timing belt, the drive unit, and the drive wheel are disposed in the cavity.

[0010] Optionally, the timing belt passes through one of the slide rail bodies, and there are two pulleys, which are respectively disposed at both ends of the second slide rail.

[0011] Optionally, the belt drive assembly further includes a tensioning pulley, with two tensioning pulleys respectively disposed at both ends of the second slide rail, two pulleys respectively disposed at both ends of the second slide rail, and the tensioning pulleys disposed on one side of the pulleys.

[0012] Optionally, a portion of the timing belt passes through the slide rail body, and another portion of the timing belt passes through the pulley fixing member; or, at least a portion of the timing belt is disposed within the pulley fixing member.

[0013] Optionally, the pulley and the drive wheel are respectively disposed at both ends of the second slide rail, a portion of the timing belt passes through the slide rail body, and the timing belt is sleeved on the drive wheel and the pulley.

[0014] Optionally, the belt drive assembly further includes a tensioning pulley and a pressure pulley. The two pulleys are respectively disposed at one end of the two second slide rails, and the plurality of tensioning pulleys are respectively disposed at the other end of the two second slide rails. The pressure pulley and the drive pulley are respectively tightly disposed against the outer wall and inner wall of the synchronous belt to press the synchronous belt onto the drive pulley. The synchronous belt is wound around the pulleys, tensioning pulleys and drive pulleys, and different parts of the synchronous belt pass through the two slide rail bodies.

[0015] Optionally, the electric guide rail device includes two belt drive assemblies, the second slide rail includes at least two slide rail bodies, the at least two slide rail bodies are spaced apart along an extension direction perpendicular to themselves, and the synchronous belts of the two belt drive assemblies are respectively passed through the two slide rail bodies.

[0016] Optionally, the electric guide rail device includes two drive units, each drive unit being connected to a drive wheel in each belt drive assembly. The belt drive assembly also includes a plurality of pressure wheels, a portion of which are arranged circumferentially around one drive wheel, and another portion of which are arranged circumferentially around another drive wheel.

[0017] Optionally, the electric guide rail device includes one of the drive units, the synchronous belt of the belt drive assembly passes through the corresponding second slide rail, the drive unit is connected to the drive wheel in one of the belt drive assemblies, and one of the belt drive assemblies is connected to another belt drive assembly for driving the other belt drive assembly to operate.

[0018] Optionally, the drive wheel includes a belt mounting portion and a toothed portion connected sequentially along its axial direction, the synchronous belt is sleeved on the belt mounting portion, and the toothed portion of one belt drive assembly is engaged with the toothed portion of another belt drive assembly.

[0019] Optionally, the belt drive assembly further includes a pressure wheel and a transmission gear. The drive wheel includes a belt mounting portion and a toothed portion connected sequentially along its axial direction. The synchronous belt is wound around the pulley, the belt mounting portion of the drive wheel, and the pressure wheel. The toothed portion of one belt drive assembly is meshed with the toothed portion of another belt drive assembly through the transmission gear.

[0020] Optionally, one of the belt drive assemblies further includes a transmission belt, a first drive wheel, and a second drive wheel; another belt drive assembly further includes a third drive wheel. The drive unit is connected to the second drive wheel, the second drive wheel is meshed with the first drive wheel, the second drive wheel is connected to the third drive wheel via the transmission belt, and the first drive wheel and the third drive wheel are respectively connected to the synchronous belts of the two belt drive assemblies.

[0021] Optionally, the inner and outer walls of the synchronous belt have internal teeth and external teeth, respectively. The internal teeth of the synchronous belt are sleeved on the pulley and the drive wheel. The synchronous belts in the two belt drive assemblies are connected by the external teeth. The drive wheels in the two belt drive assemblies are arranged opposite to each other to press the meshing points of the two synchronous belts.

[0022] Optionally, the belt drive assembly includes a pressure wheel and a drive wheel. The drive wheel includes two belt mounting parts connected sequentially along its axial direction. The synchronous belts of the two belt drive assemblies are respectively sleeved on the two belt mounting parts and the pulley. The pressure wheel and the drive wheel are respectively connected to the outer wall and inner wall of the synchronous belt to press each synchronous belt onto each belt mounting part.

[0023] Optionally, the belt drive assembly includes a first pressure wheel, a second pressure wheel, and a third pressure wheel. The timing belt has internal teeth and external teeth. The internal teeth of one timing belt are sleeved on one pulley and the first pressure wheel, and the internal teeth of another timing belt are sleeved on another pulley, the second pressure wheel, and the drive wheel. The third pressure wheel is disposed on one side of the drive wheel and connected to the external teeth of the other timing belt, for pressing the other timing belt onto the drive wheel. The two timing belts are connected by meshing external teeth.

[0024] The first clamping wheel and the second clamping wheel are disposed between the slide rail bodies of the two second slide rails, and the first clamping wheel is disposed on one side of the second clamping wheel for clamping the meshing part of the two timing belts.

[0025] Optionally, the belt drive assembly further includes an elastic tensioner, which is disposed below the pulley fixing member and on one side of the pulley. The elastic tensioner is connected to one of the pulleys and is used to adjust the position of the pulleys during the assembly stage so that the tension of the two synchronous belts is consistent.

[0026] Optionally, the first slide rail includes at least two slide rail components, which are spaced apart along an extension direction perpendicular to themselves. Each slide rail component includes a movable component and a first guide rail portion. The first guide rail portion is disposed on a side perpendicular to the extension direction of the first slide rail. Two sets of movable components are spaced apart along the extension direction perpendicular to the first slide rail, and the two sets of movable components are respectively connected to the first guide rail portion. The slide rail body includes a second guide rail portion, and the first guide rail portion is embedded in the second guide rail portion. Each set of two movable components is located in the second guide rail portion and is used to move relative to the second guide rail portion. The synchronous belt is located between the movable component and the second guide rail portion.

[0027] Optionally, the slide rail body further includes a support portion, which is disposed between the two second guide rail portions, and the top surface of the support portion is lower than the bottom surface of the second guide rail portions.

[0028] Optionally, the electric guide rail device further includes a connector, which includes a first connecting seat and a second connecting seat. The first connecting seat is connected to the first guide rail portion of the first slide rail. The first connecting seat is connected to the second connecting seat, and the first connecting seat and / or the second connecting seat are provided with a mounting groove. A portion of the synchronous belt passes through the mounting groove, and the first connecting seat is connected to the second connecting seat.

[0029] Compared with the prior art, when the first slide rail slides relative to the second slide rail in this invention, the drive unit can work to drive the drive wheel to rotate. The drive wheel and the pulley are connected by a synchronous belt, so that the rotation of the drive wheel drives the synchronous belt to drive the transmission. The synchronous belt is connected to the first slide rail, so that the synchronous belt drives the first slide rail to slide relative to the second slide rail, thereby realizing the movement of movable devices in the car, such as the seat body or armrest box body, relative to the car floor, such as forward and backward or left and right movement.

[0030] In this design, the timing belt in the belt drive assembly is wound around the drive wheel and pulley, creating a flexible connection between them. This not only reduces noise from the seat's movement relative to the vehicle floor but also transmits the drive force from the drive wheel to the pulley and the first slide rail, reducing assembly tolerances and resulting in smoother sliding between the first and second slide rails. By placing at least a portion of the timing belt within the second slide rail, dirt and grime from inside the vehicle are prevented from entering other components of the belt drive assembly, reducing the likelihood of transmission failure. Furthermore, this design does not interfere with the assembly of the second slide rail to the vehicle floor or the first slide rail to the seat.

[0031] Since the area of ​​the upper slide rail and the seat body or armrest box body is the foot space for rear passengers, the usable space of the seat body is very limited. In related technologies, the drive motor and transmission structure are usually located below the seat body, thereby reducing the foot space for rear passengers in the seat body. However, in this invention, the central axes of the drive wheel and pulley are both arranged vertically, so that the synchronous belt extends and reciprocates in the horizontal plane, and at least part of the synchronous belt is arranged in the second slide rail. Therefore, the drive unit and the entire belt drive assembly (including the drive wheel, pulley and synchronous belt) are basically located in the area below the horizontal height of the second slide rail. Correspondingly, the drive unit used to drive the belt drive assembly is also in a lower position, so that it not only does not occupy the space below the seat body or armrest box body to reserve sufficient foot space for rear passengers, but also provides convenience for the arrangement and assembly of the belt drive assembly and drive unit.

[0032] Another embodiment of the present invention provides a seat assembly, including the electric guide rail device as described above, and a seat body, wherein the seat body is connected to a first slide rail of the electric guide rail device; the extending directions of the first slide rail and the second slide rail are parallel to the moving direction of the seat body.

[0033] Therefore, since the seat assembly includes an electric guide rail device, the seat assembly has at least all the technical effects of the electric guide rail device, which will not be elaborated here.

[0034] Another embodiment of the present invention provides a central armrest box, including the electric guide rail device as described above, and an armrest box body, wherein the armrest box body is connected to a first slide rail of the electric guide rail device; the extending directions of the first slide rail and the second slide rail are parallel to the moving direction of the armrest box body.

[0035] Therefore, since the center armrest box includes an electric guide rail device, it possesses at least all the technical effects of the electric guide rail device, which will not be elaborated further here.

[0036] Another embodiment of the present invention provides an automobile including the seat assembly as described above, or the center armrest box as described above, or the electric guide rail device as described above.

[0037] Therefore, since a car includes a seat assembly, or a center armrest, or an electric rail device, the car has at least all the technical effects of a seat assembly, or a center armrest, or an electric rail device, which will not be elaborated here. Attached Figure Description

[0038] Figure 1 This is a schematic diagram of the axonal structure of the electric guide rail device in an embodiment of the present invention;

[0039] Figure 2 This is one of the exploded structural diagrams of the electric guide rail device in an embodiment of the present invention;

[0040] Figure 3 This is a schematic diagram of one embodiment of the electric guide rail device with a single synchronous belt according to the present invention;

[0041] Figure 4 This is a second embodiment of the electric guide rail device with a single synchronous belt according to the present invention;

[0042] Figure 5 This is a schematic diagram of the third embodiment of the electric guide rail device with a single synchronous belt according to the present invention;

[0043] Figure 6 This is a schematic diagram of the fourth embodiment of the electric guide rail device with a single synchronous belt according to the present invention;

[0044] Figure 7 This is a schematic diagram of the fifth embodiment of the electric guide rail device with a single synchronous belt according to the present invention;

[0045] Figure 8 This is a schematic diagram of the electric guide rail device with a single synchronous belt according to the present invention, which is a sixth embodiment.

[0046] Figure 9 This is a schematic diagram of one embodiment of the electric guide rail device with two synchronous belts according to the present invention;

[0047] Figure 10 This is a schematic diagram of the structure of the electric guide rail device with two synchronous belts according to the present invention, which is a second embodiment.

[0048] Figure 11 This is a schematic diagram of the electric guide rail device with two synchronous belts according to the present invention, which is a third embodiment.

[0049] Figure 12 This is a schematic diagram of the electric guide rail device with two synchronous belts according to the present invention, which is a fourth embodiment.

[0050] Figure 13 This is a schematic diagram of the fifth embodiment of the electric guide rail device with two synchronous belts of the present invention;

[0051] Figure 14 This is a schematic diagram of the electric guide rail device with two synchronous belts according to the present invention, which is a sixth embodiment.

[0052] Figure 15 This is a schematic diagram of the electric guide rail device with two synchronous belts according to the present invention, which is the seventh embodiment.

[0053] Figure 16 This is a schematic diagram of the structure of the electric guide rail device with two synchronous belts of the present invention, which is the eighth embodiment.

[0054] Figure 17 This is a schematic diagram of the structure of the belt drive assembly in one embodiment of the present invention;

[0055] Figure 18 This is a schematic diagram of the belt drive assembly in one embodiment of the present invention, which is also a second embodiment.

[0056] Figure 19 This is a schematic diagram of the seat assembly in an embodiment of the present invention;

[0057] Figure 20 This is the second exploded structural diagram of the electric guide rail device in an embodiment of the present invention;

[0058] Figure 21 for Figure 20 Enlarged structural diagram at point A;

[0059] Figure 22 This is a schematic diagram of the structure of the first slide rail and connecting member in an embodiment of the present invention.

[0060] Explanation of reference numerals in the attached figures:

[0061] 1-Drive unit; 2-Slide rail assembly; 21-First slide rail; 211-First guide rail part; 212-Moving part; 22-Second slide rail; 221-Slide rail body; 2211-Second guide rail part; 2212-Support part; 222-Pulley fixing part; 2221-Pulley mounting seat; 2222-Protective cover; 3-Belt drive assembly; 31-Drive wheel; 311-First drive wheel; 312-Second drive wheel; 313-The 314-Fourth drive wheel; 315-Fifth drive wheel; 316-Sixth drive wheel; 32-Pulley; 33-Synchronous belt; 34-Tension pulley; 35-Pressure pulley; 351-First pressure pulley; 352-Second pressure pulley; 353-Third pressure pulley; 36-Transmission gear; 37-Transmission belt; 38-Elastic tensioning element; 4-Connector; 41-First connecting seat; 42-Second connecting seat; 5-Seat body. Detailed Implementation

[0062] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0063] It should be noted that in the XYZ coordinate system provided herein, the positive X-axis represents the rear, and the negative X-axis represents the front; the positive Y-axis represents the right, and the negative Y-axis represents the left; the positive Z-axis represents the top, and the negative Z-axis represents the bottom. Furthermore, it should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in sequences other than those illustrated or described herein.

[0064] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0065] In the description of this specification, references to terms such as "embodiment," "one embodiment," and "one implementation" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or implementation is included in at least one embodiment or implementation of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or implementation. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or implementations.

[0066] To solve the above technical problems, combined with Figure 1 As shown, this embodiment of the invention provides an electric guide rail device, including a slide rail assembly 2, a drive unit 1, and a belt drive assembly 3. The slide rail assembly 2 includes a first slide rail 21 disposed on the seat body 5 and a second slide rail 22 disposed on the vehicle floor, the first slide rail 21 and the second slide rail 22 being slidably engaged. The belt drive assembly 3 includes a drive wheel 31, a pulley 32, and a timing belt 33. At least a portion of the timing belt 33 is disposed on the second slide rail 22, and the timing belt 33 is wound around the drive wheel 31 and the pulley 32. The drive unit 1 is connected to the drive wheel 31 for driving the drive wheel 31 to rotate, and the timing belt 33 is connected to the first slide rail 21.

[0067] The central axes of both the drive wheel 31 and the belt pulley 32 are arranged in a vertical direction.

[0068] It should be noted that the first slide rail 21 can be set at the bottom of the seat body 5, and the second slide rail 22 can be mounted on the vehicle floor; specifically, the synchronous belt 33 is arranged around the drive wheel 31 and the pulley 32. When the central axes of the drive wheel 31 and the pulley 32 are both arranged in the vertical direction, the synchronous belt 33, the drive wheel 31 and the pulley 32 can be regarded as being in the same horizontal plane. The synchronous belt extends in this horizontal plane to form a closed loop and moves back and forth under the drive of the drive wheel 31.

[0069] At least a portion of the timing belt 33 is disposed within the second slide rail 22, such that the drive wheel 31, pulley 32, and drive unit 1 connected to the timing belt 33 can be located inside or outside the second slide rail 22. This not only avoids occupying the area of ​​the seat body 5, but also provides sufficient legroom for rear passengers. The vertical direction refers to... Figure 1 The direction of the Z-axis in the coordinate system.

[0070] When the first slide rail 21 slides relative to the second slide rail 22 in this invention, the drive unit 1 can work to drive the drive wheel 31 to rotate. The drive wheel 31 is connected to the pulley 32 by a synchronous belt 33, so that the rotation of the drive wheel 31 drives the synchronous belt 33 to drive the transmission. The synchronous belt 33 is connected to the first slide rail 21, so that the synchronous belt 33 drives the first slide rail 21 to slide relative to the second slide rail 22, so as to realize the movement of movable devices in the car, such as the seat body 5 or the armrest box body, relative to the car floor, for example, forward and backward or left and right movement.

[0071] In this design, the timing belt 33 in the belt drive assembly 3 is wound around the drive wheel 31 and the pulley 32, providing a soft connection between them. This not only reduces the noise from the seat body 5 moving relative to the vehicle floor, but also transmits the transmission force of the drive wheel 31 to the pulley 32 and the first slide rail 21 via the timing belt 33, reducing assembly tolerances and resulting in smoother sliding of the first slide rail 21 relative to the second slide rail 22. By placing at least a portion of the timing belt 33 within the second slide rail 22, it not only prevents dirt and grime from entering other components of the belt drive assembly 3 through the timing belt 33, reducing the possibility of transmission failure, but also does not affect the assembly of the second slide rail 22 with the vehicle floor or the first slide rail 21 with the seat body 5.

[0072] Since the area of ​​the upper slide rail and the seat body 5 or armrest box body is the foot space of the rear passengers, the usable space of the seat body 5 is very limited. In related technologies, the drive motor and transmission structure are usually set below the seat body 5, thereby reducing the foot space of the rear passengers in the seat body 5. However, in this invention, the central axes of the drive wheel 31 and the pulley 32 are both set in the vertical direction, so that the synchronous belt extends and reciprocates in the horizontal plane. At least part of the synchronous belt 33 is set in the second slide rail 22. Therefore, the entire belt drive assembly 3 (including the drive wheel 31, the pulley 32 and the synchronous belt) is basically in the area below the horizontal height of the second slide rail 22. Correspondingly, the drive part used to drive the belt drive assembly 3 is also in a lower position. Therefore, it not only does not occupy the space below the seat body 5 or the armrest box body to reserve enough foot space for the rear passengers, but also provides convenience for the arrangement and assembly of the belt drive assembly 3 and the drive part 1.

[0073] In one embodiment of the present invention, combined with Figure 1 and Figure 2 As shown, the second slide rail 22 includes a slide rail body 221 and a pulley fixing member 222. The pulley fixing member 222 is disposed on the side of the slide rail body 221, and at least a portion of the belt drive assembly 3 is disposed on the pulley fixing member 222.

[0074] It should be noted that the extension direction of the slide rail body 221 of the second slide rail 22 is the same as that of the slide rail body 221. Figure 1 In the coordinate system, the X-axis direction is consistent with the length direction of the slide rail body 221, while the extension direction perpendicular to the slide rail body 221 is... Figure 1 In the coordinate system, the Y-axis direction is consistent, and it is also the width direction of the slide rail body 221.

[0075] The upper slide rail and the area of ​​the seat body 5 or armrest box body provide legroom for rear passengers. In related technologies, the drive motor and transmission structure are usually located below the seat body 5, thereby reducing the legroom for rear passengers in the seat body 5. However, the area around the lower slide rail is usually made of foam or carpet. Therefore, in this embodiment, the pulley fixing member 222 is connected to the slide rail body 221. The pulley fixing member 222 can be located on the side of the slide rail body 221 in the width direction, which is equivalent to increasing the width area of ​​the entire second slide rail 22. This allows at least a portion of the structure of the belt drive assembly 3 to be installed on the pulley fixing member 222, so as to make full use of the internal space of the second slide rail 22. In other words, it does not occupy the space of the seat body 5 or armrest box body area, but reserves more legroom for rear passengers in the seat body 5 or armrest box body, thereby improving the user experience. The drive unit 1 can also be installed in the internal space of the second slide rail 22. The internal space of the second slide rail 22 can facilitate the assembly of the drive unit 1 and the entire belt drive assembly 3.

[0076] The drive wheel 31 and pulley 32 can be located in the area below the pulley fixing member 222. In other words, the pulley fixing member 222 not only provides installation space for the drive wheel 31 and pulley 32 to protect them, but also reduces the number of external debris entering the drive wheel 31 and pulley 32, so as to avoid external debris affecting the normal transmission operation of the belt drive assembly 3 and causing structural failure.

[0077] The pulley fixing member 222 is provided on the side of the slide rail body 221, which means that the pulley fixing member 222 can be provided on one side of the slide rail body 221 or around the outside of the slide rail body 221, and the pulley fixing member 222 and the slide rail body 221 can have a direct connection relationship or not be directly connected.

[0078] In addition, in related technologies, the synchronous belt 33 is an end belt structure. Since the main body of the synchronous belt is made of materials such as rubber that are easily softened at high temperatures, the synchronous belt is difficult to clamp at high temperatures, which may lead to it coming loose at the end belt during transmission. However, the synchronous belt 33 in this embodiment is a closed structure. The reliability of the closed structure synchronous belt 33 is higher than that of the end belt synchronous belt 33, which improves the reliability of the synchronous belt, especially at high temperatures.

[0079] In one embodiment of the present invention, combined with Figure 2 As shown, the pulley fixing member 222 includes a pulley mounting base 2221 and a protective cover 2222. The pulley mounting base 2221 is disposed at the end of the protective cover 2222 along the extension direction of the second slide rail 22. The pulley 32 is mounted on the pulley mounting base 2221. The drive wheel 31 and the pulley 32 are disposed on the protective cover 2222.

[0080] It should be noted that the pulley mounting base 2221 is located at the end of the protective cover 2222 along the extension direction (length direction) of the second slide rail 22. There is at least one pulley mounting base 2221, used to mount components in the belt drive assembly 3, such as pulleys 32 and tensioners. The pulleys 32 are mounted at both ends of the extension direction of the pulley fixing member 222 and are located on both sides of the extension direction of the slide rail body 221. In other words, in this embodiment, the pulleys 32 can be directly mounted on the pulley mounting base 2221, without being installed inside or at the end of the slide rail body 221, thus not occupying the internal space of the slide rail body 221. This is equivalent to increasing the travel distance of the first slide rail 21 relative to the second slide rail 22, thereby increasing the forward / backward or left / right adjustment travel of the seat body 5 relative to the vehicle floor to accommodate the needs of customers of different body types. The drive wheel 31 and pulley 32 are located at the bottom of the protective cover 2222, thus providing shielding and protection for the drive wheel 31 and pulley 32 through the protective cover 2222.

[0081] Specifically, at least one pulley 32 can be installed on a pulley mounting base 2221. The number of pulleys 32 installed on the pulley mounting base 2221 can be flexibly set according to different vehicle models, different customers, etc., and is not specifically limited here. The protective cover 2222 can be a plate-shaped structure (flat plate, curved plate, etc.). In this case, the drive unit 1 and the belt drive assembly 3 can be located in the lower or upper area of ​​the plate-shaped structure. It can also be a shell structure, etc. In this case, the drive unit 1 and the belt drive assembly 3 can be located in the internal space of the shell structure. Therefore, the structure or shape of the protective cover 2222 is not specifically limited here.

[0082] In one embodiment of the present invention, combined with Figures 3 to 8 As shown, the second slide rail 22 includes at least two slide rail bodies 221, which are spaced apart along an extension direction perpendicular to themselves. The number of the drive part 1 and the synchronous belt 33 is one. The pulley fixing member 222 has a cavity, and at least a portion of the synchronous belt 33, the drive part 1 and the drive wheel 31 are disposed in the cavity.

[0083] It should be noted that there are at least two slide rail bodies 221, and at the same time, there are at least two first slide rails 21 corresponding to the slide rail bodies 221, and the number of slide rail bodies 221 matches the number of first slide rails 21.

[0084] The pulley fixing member 222, for example, the protective cover 2222, has a cavity. Therefore, at least a portion of the synchronous belt 33, the drive unit 1, and the drive wheel 31 are all installed in the cavity to shield and protect the belt drive assembly 3 through the pulley fixing member 222. In this embodiment, since there is only one drive unit 1 and one synchronous belt 33, one drive unit 1 works to drive the drive wheel 31 to rotate. The synchronous belt 33 drives multiple pulleys 32 to rotate. The synchronous belt 33 is connected to the first slide rail 21 to drive the first slide rail 21 to move relative to the second slide rail 22. In other words, the seat body 5 or the armrest box body can move left and right or forward and backward relative to the vehicle floor through one drive unit 1, thereby effectively reducing the cost of the drive unit 1 and the entire belt drive assembly 3. The drive unit 1 can be a rotary motor.

[0085] in, Figures 3 to 8 The X and Y axes of the coordinate system are used to indicate that in one embodiment, two slide rail bodies 221 can be arranged at intervals along the Y axis direction, and the extension direction of each second slide rail 22 can be parallel to the X axis direction. The seat body 5 can move back and forth relative to the vehicle floor. However, it is not limited to this arrangement of the two slide rail bodies 221. For example, the two slide rail bodies 221 can also be arranged at intervals along the X axis direction so that the seat body 5 can move left and right relative to the vehicle floor.

[0086] In one embodiment of the present invention, combined with Figure 3 As shown, the synchronous belt 33 passes through a slide rail body 221, and there are two pulleys 32, which are respectively disposed at both ends of the second slide rail 22.

[0087] It should be noted that the two pulleys 32 can be respectively set at both ends of the slide rail body 221, or they can be set in the two pulley mounting seats 2221. The synchronous belt 33 passes through the slide rail body 221 and is wrapped around the drive wheel 31, the pressure wheel 35 and the two pulleys 32. The drive unit 1 is connected to the drive wheel 31 so as to drive the drive wheel 31 to rotate. The rotation of the drive wheel 31 drives the synchronous belt 33 to drive the transmission on the pulley 32, so as to drive the first slide rail 21 to move linearly relative to the second slide rail 22, so as to realize the position adjustment of the seat body 5 relative to the vehicle floor.

[0088] Figure 3In the belt drive assembly 3, there are also multiple pressure rollers 35 arranged around the drive wheel 31. The pressure rollers 35 and the drive wheel 31 are respectively in contact with the outer wall and inner wall of the synchronous belt 33 to press the synchronous belt 33 against the drive wheel 31, thereby preventing the synchronous belt 33 from detaching from the drive wheel 31 during transmission and improving the stability of the synchronous belt 33 in transmission on the drive wheel 31 and the pulley 32.

[0089] In one embodiment of the present invention, combined with Figure 4 and Figure 5 As shown, the belt drive assembly 3 also includes a tensioning wheel 34. The two tensioning wheels 34 are respectively disposed at both ends of the second slide rail, and the two pulleys 32 are respectively disposed at both ends of the second slide rail 22. The tensioning wheel 34 is disposed on one side of the pulley 32.

[0090] It should be noted that the two pulleys 32 are respectively located at both ends of the second slide rail 22, thereby providing support for the installation and transmission of the synchronous belt 33. The two tensioning pulleys 34 are respectively located at both ends of the second slide rail 22, and the tensioning pulleys 34 are located on one side of the pulleys 32. The tensioning pulleys 34 are used to adjust the tension of the synchronous belt 33, so that the consistency of the tension of the synchronous belt corresponding to the two second slide rails 22 can be guaranteed during the assembly stage, thereby ensuring the synchronicity and smoothness of the sliding of the first slide rail 21 relative to the second slide rail 22.

[0091] Specifically, the tensioning pulley 34 can be a wheel body with external teeth on its circumferential outer wall and used to tension the timing belt 33, and the pulley can be a wheel body with a smooth circumferential outer wall or a wheel body with external teeth on its circumferential outer wall.

[0092] In one embodiment of the present invention, combined with Figure 4 and Figure 6 As shown, a portion of the synchronous belt 33 passes through the slide rail body 221, and another portion of the synchronous belt 33 passes through the pulley fixing member 222; or, at least a portion of the synchronous belt 33 is disposed within the pulley fixing member 222.

[0093] It should be noted that, in Figure 4In this configuration, two pulleys 32 are installed on opposite sides of the slide rail body 221 and are respectively installed within the pulley mounting seats 2221 of the pulley fixing member 222. At this time, a portion of the synchronous belt 33 passes through the slide rail body 221, while the other portion is located outside the slide rail body 221 but within the pulley fixing member 222. Thus, the slide rail body 221 and the pulley fixing member 222 jointly shield and protect the synchronous belt 33 and the pulleys 32. The synchronous belt 33 can pass through the center of the slide rail body 221 or from one side of the center; no specific limitation is made here.

[0094] Combination Figure 7 As shown, the second slide rail 22 can have multiple slide rail bodies 221, with the synchronous belt 33 passing through one of the slide rail bodies 221; for example... Figure 3 There are three slide rail bodies 221, so the synchronization of the sliding of the first slide rail 21 relative to the second slide rail 22 can be achieved by a synchronous belt 33.

[0095] exist Figure 6 In the middle, the pulleys 32 and tensioning pulleys 34 on both sides of the second slide rail 22 are installed in the corresponding pulley mounting seats 2221. The synchronous belt 33 can pass through the inside of the protective cover 2222 of the pulley fixing member 222. In other words, the synchronous belt 33 does not pass directly through the inside of the slide rail body 221, so that the synchronous belt 33 can also drive the first slide rail 21 to move relative to the second slide rail 22.

[0096] In one embodiment of the present invention, combined with Figure 5 As shown, the pulley 32 and the drive wheel 31 are respectively disposed at both ends of the second slide rail 22, and part of the timing belt 33 passes through the slide rail body 221. The timing belt 33 is sleeved on the drive wheel 31 and the pulley 32.

[0097] It should be noted that by setting the pulley 32 and the drive wheel 31 at opposite ends of the second slide rail 22, the drive wheel 31 not only serves as the pulley 32 to support the synchronous belt 33, but also drives the synchronous belt 33 under the driving action of the drive unit 1. This reduces the number of pulleys 32 and correspondingly reduces the assembly difficulty and failure probability of the belt drive assembly 3.

[0098] In one embodiment of the present invention, combined with Figure 8As shown, the belt drive assembly 3 further includes a tensioning wheel 34 and a pressure wheel 35. Two pulleys 32 are respectively disposed at one end of two second slide rails 22, and multiple tensioning wheels 34 are respectively disposed at the other end of two second slide rails 22. The pressure wheel 35 and the drive wheel 31 are respectively disposed in close contact with the outer wall and inner wall of the synchronous belt 33 to press the synchronous belt 33 onto the drive wheel 31. The synchronous belt 33 is wound around the pulleys 32, tensioning wheels 34 and drive wheel 31, and different parts of the synchronous belt 33 pass through the two slide rail bodies 221.

[0099] It should be noted that the two pulleys 32 can be set at one end of the two slide rail bodies 221, such as the rear end, and the multiple tensioning wheels 34 are respectively installed at the other end of the two second slide rails 22, such as the front end. At this time, the tensioning wheel 34 not only supports the timing belt 33 for the pulleys 32, but also tensions the timing belt 33; the pressure wheel 35 is used to press the timing belt 33 onto the drive wheel 31 to prevent the timing belt 33 from detaching from the drive wheel 31.

[0100] In this embodiment, there is one synchronous belt 33. The synchronous belt 33 passes through the two slide rail bodies 221 and is wound around each pulley 32, tension wheel 34 and drive wheel 31. The drive unit 1 works to drive the drive wheel 31 to rotate, and the drive wheel 31 drives the synchronous belt 33. Since the connector 4 is used to connect the synchronous belt 33 and the first slide rail 21, the synchronous belt 33 passing through the two second slide rails 22 can be connected to the two first slide rails 21 respectively through the two connectors 4. Thus, the transmission of the synchronous belt 33 not only makes the first slide rail 21 move relative to the second slide rail 22, realizing the position adjustment of the seat body 5 relative to the vehicle floor, such as moving forward or backward or left or right, but also ensures the synchronicity of the movement of the two first slide rails 21 relative to the second slide rail 22 when different parts of the synchronous belt 33 move in the same direction and speed when passing through the two second slide rails 22, so as to make the position adjustment action of the seat body 5 more stable.

[0101] In one embodiment of the present invention, combined with Figures 9 to 16 As shown, the electric guide rail device includes two belt drive assemblies 3, and the second slide rail 22 includes at least two slide rail bodies 221. The at least two slide rail bodies 221 are spaced apart along an extension direction perpendicular to themselves, and the synchronous belts 33 of the two belt drive assemblies 3 are respectively inserted into the two slide rail bodies 221.

[0102] It should be noted that there are at least two slide rail bodies 221, and there may be two belt drive components 3. The synchronous belt 33 is passed through the corresponding second slide rail 22, so that the drive wheel 31 is driven to rotate by the drive unit 1. The drive wheel 31 drives the two synchronous belts 33 to drive simultaneously, so that the two first slide rails 21 move synchronously relative to the two slide rail bodies 221. This not only realizes the position adjustment of the seat body 5 relative to the vehicle floor, such as moving forward or backward or left or right, but also makes the position adjustment action of the seat body 5 more stable.

[0103] In one embodiment of the present invention, combined with Figure 9 As shown, the electric guide rail device includes two drive units 1, each drive unit 1 is connected to the drive wheel 31 in each belt drive assembly 3, and the belt drive assembly 3 also includes a plurality of pressure wheels 35, a portion of the pressure wheels 35 are arranged around the circumference of one drive wheel 31, and another portion of the pressure wheels 35 are arranged around the circumference of another drive wheel 31.

[0104] It should be noted that by driving the corresponding belt drive assembly 3 through the two drive units 1 respectively, the two first slide rails 21 connected to the synchronous belt 33 in the belt drive assembly 3 move relative to the two slide rail bodies 221. This not only enables the seat body 5 to adjust its position relative to the vehicle floor, such as moving forward or backward or left or right, but also makes the position adjustment of the seat body 5 more stable.

[0105] To enable the two drive units 1 to drive their corresponding belt drive assemblies 3 synchronously, the two drive units 1 can be controlled by a single automotive electronic control unit (ECU) to ensure the synchronicity of their operation. Furthermore, each belt drive assembly 3 has a pressure roller 35 arranged circumferentially on its drive pulley 31. The pressure roller 35 and the drive pulley 31 respectively contact the outer and inner walls of the timing belt 33, thereby tightly pressing the same timing belt 33 onto the drive pulley 31 through the pressure roller 35, effectively preventing the timing belt 33 from detaching from the drive pulley 31.

[0106] In one embodiment of the present invention, combined with Figures 10 to 14 As shown, the electric guide rail device includes a drive unit 1, the synchronous belt 33 of the belt drive assembly 3 passes through the corresponding second slide rail 22, the drive unit 1 is connected to the drive wheel 31 in one of the belt drive assemblies 3, and one belt drive assembly 3 is connected to another belt drive assembly 3 for driving the other belt drive assembly 3 to operate.

[0107] It should be noted that one drive unit 1 can simultaneously drive two belt drive assemblies 3 to work, and each synchronous belt 33 is threaded through the corresponding second slide rail 22. Specifically, the drive unit 1 works to drive the drive wheel 31 of one of the belt drive assemblies 3 to rotate. Since the two belt drive assemblies 3 are connected, when one belt drive assembly 3 is running, it can simultaneously drive the other belt drive assembly 3 to drive. Thus, not only can the position adjustment of the seat body 5 relative to the vehicle floor be realized through one drive unit 1, such as moving forward or backward or left or right, but the position adjustment action of the seat body 5 can also be made more stable.

[0108] In one embodiment of the present invention, combined with Figure 10 As shown, the drive wheel 31 includes a belt mounting part and a toothed part connected sequentially along its axial direction. The synchronous belt 33 is sleeved on the belt mounting part. The toothed part of one belt drive assembly 3 is engaged with the toothed part of another belt drive assembly 3.

[0109] It should be noted that there are two drive wheels 31. Both drive wheels 31 include a belt mounting part and a toothed part. The belt mounting part and the toothed part are integrally formed along the central axis of the drive wheel 31, thereby improving the mechanical strength of the drive wheel 31 and extending its service life accordingly. A synchronous belt 33 is sleeved on the belt mounting part of one drive wheel 31 and the pulley 32 installed at the end of a second slide rail 22. The toothed part of one drive wheel 31 is meshed with the toothed part of the other drive wheel 31. The other synchronous belt 33 is sleeved on the belt mounting part of the other drive wheel 31 and the pulley 32 installed at the end of the other second slide rail 22. In other words, through the mutual meshing of the drive wheels 31 in the two belt transmission assemblies 3, the drive wheel 31 is driven to rotate under the action of the drive part 1, so that the synchronous belt 33 corresponding to the other drive wheel 31 meshing with the drive wheel 31 can be synchronously transmitted. This not only realizes the position adjustment of the seat body 5 relative to the vehicle floor, such as moving forward or backward or left or right, but also makes the position adjustment action of the seat body 5 more stable.

[0110] In one embodiment of the present invention, combined with Figure 11 As shown, the belt drive assembly 3 further includes a pressure wheel 35 and a transmission gear 36. The drive wheel 31 includes a belt mounting part and a toothed part connected sequentially along its axial direction. The synchronous belt 33 is wound around the pulley 32, the belt mounting part of the drive wheel 31 and the pressure wheel 35. The toothed part of one belt drive assembly 3 is meshed with the toothed part of another belt drive assembly 3 through the transmission gear 36.

[0111] It should be noted that there are two drive wheels 31 and at least one transmission gear 36. The teeth of one drive wheel 31 can be connected to the teeth of another drive wheel 31 through at least one transmission gear 36. Thus, the rotation of one drive wheel 31 is transmitted to the other drive wheel 31 through at least one transmission gear 36. This not only enables the first slide rail 21 to move relative to the second slide rail 22, but also makes the position adjustment of the seat body 5 relative to the vehicle floor more stable.

[0112] Combination Figure 11 As shown, there is one transmission gear 36. The drive wheel 31 includes a fourth drive wheel 314, a fifth drive wheel 315, and a sixth drive wheel 316. The drive unit 1 is connected to the fourth drive wheel 314. The right side of the fourth drive wheel 314 can mesh with the sixth drive wheel 316. The sixth drive wheel 316 is driven by the right-side synchronous belt 33. The left side of the fourth drive wheel 314 can mesh with the fifth drive wheel 315 through the transmission gear 36. The fifth drive wheel 315 is driven by the left-side synchronous belt 33. Thus, the drive unit 1 drives the fourth drive wheel 314 to rotate. At this time, the fourth drive wheel 314 transmits the rotational force to the right-side synchronous belt 33 through the sixth drive wheel 316, and also transmits the rotational force to the left-side synchronous belt 33 through the transmission gear 36 and the fifth drive wheel 315, thereby achieving synchronous sliding of the first slide rail relative to the two slide rail bodies in the second slide rail. In this embodiment, the drive unit 1 can be driven by any one of the drive wheels or the transmission gear 36.

[0113] Combination Figure 12 As shown, the number of transmission gears 36 is an even number, for example, four. The drive wheel 31 includes a fourth drive wheel 314 and a sixth drive wheel 316. The drive unit 1 is connected to the fourth drive wheel 314. The right side of the fourth drive wheel 314 is connected to the sixth drive wheel 316 via four transmission gears 36. The sixth drive wheel 316 is connected to the right-side synchronous belt 33. The left side of the fourth drive wheel 314 is connected to the left-side synchronous belt 33. Thus, the drive unit 1 drives the fourth drive wheel 314 to rotate. At this time, the fourth drive wheel 314 transmits the rotational force to the right-side synchronous belt 33 via the four transmission gears 36 and the sixth drive wheel 316, and also transmits the rotational force to the left-side synchronous belt 33, thereby achieving synchronous sliding of the first slide rail relative to the two slide rail bodies in the second slide rail. In this embodiment, the drive unit 1 can be driven connected to any one of the drive wheels or any one of the transmission gears 36.

[0114] In one embodiment of the present invention, combined with Figure 13As shown, one belt drive assembly 3 further includes a transmission belt 37, a first drive wheel 311 and a second drive wheel 312, and another belt drive assembly 3 further includes a third drive wheel 313. The drive unit 1 is connected to the second drive wheel 312, the second drive wheel 312 is meshed with the first drive wheel 311, the second drive wheel 312 is connected to the third drive wheel 313 via the transmission belt 37, and the first drive wheel 311 and the third drive wheel (313) are respectively connected to the synchronous belts 33 of the two belt drive assemblies 3.

[0115] It should be noted that one of the belt drive components 3 has two drive wheels 31, namely the first drive wheel 311 and the second drive wheel 312, while the other belt drive component 3 has one drive wheel 31, which is defined as the third drive wheel 313.

[0116] Specifically, in combination Figure 13 As shown, drive wheel 31 is connected to second drive wheel 312, and second drive wheel 312 is meshed with first drive wheel 311 on the left. Synchronous belt 33 on the left is connected to first drive wheel 311 and pulley 32 on the left. Second drive wheel 312 is connected to third drive wheel 313 via transmission belt 37. Synchronous belt 33 on the right is connected to third drive wheel 313 and pulley 32 on the right. Thus, under the driving action of drive unit 1, second drive wheel 312 can not only drive first drive wheel 311 to rotate, but also drive third drive wheel 313 to rotate via transmission belt 37. First drive wheel 311 and third drive wheel 313 drive their respective corresponding synchronous belts 33 to rotate. This not only enables first slide rail 21 to move relative to second slide rail 22, but also reduces noise during operation of the two belt drive components 3 due to the connection between second drive wheel 312 and third drive wheel 313 via transmission belt 37. Furthermore, it makes the position adjustment of seat body 5 relative to vehicle floor more stable.

[0117] In one embodiment of the present invention, combined with Figure 14 As shown, the inner wall and outer wall of the synchronous belt 33 have internal teeth and external teeth respectively. The internal teeth of the synchronous belt 33 are sleeved on the pulley 32 and the drive wheel 31. The synchronous belts 33 in the two belt drive assemblies 3 are connected by the external teeth. The two drive wheels 31 are arranged opposite to each other to press the meshing part of the two synchronous belts 33.

[0118] It should be noted that there are two drive pulleys 31 and two timing belts 33, and both the inner and outer walls of the two timing belts 33 have friction surfaces. The inner and outer walls of the timing belts 33 are defined as internal teeth and external teeth, respectively. In other words, the two timing belts 33 in the two belt drive assemblies 3 transmit power through the meshing of their respective external teeth. The two drive pulleys 31 are arranged adjacent to each other to make the meshing of the external teeth of the two timing belts 33 tighter. Each timing belt 33 is connected to the corresponding first slide rail 21 through a connector 4.

[0119] The number of pulley fixing parts 222 can be one, that is, one pulley fixing part 222 is connected to two slide rail bodies 221 respectively; or the number of pulley fixing parts 222 can be two, that is, the pulley fixing part 222 is connected to the corresponding slide rail body 221.

[0120] Specifically, the drive unit 1 operates to drive one of the drive wheels 31 to rotate. At this time, the drive wheel 31 not only drives the corresponding synchronous belt 33 to drive, but also drives another synchronous belt 33 to drive synchronously, so that the two first slide rails 21 connected to the synchronous belt 33 can move synchronously relative to the second slide rail 22. This not only enables the seat body 5 to adjust its position relative to the vehicle floor, such as moving forward or backward or left or right, but also makes the position adjustment of the seat body 5 more stable.

[0121] In one embodiment of the present invention, combined with Figure 15 As shown, the belt drive assembly 3 further includes a pressure wheel 35 and a drive wheel 31. The drive wheel 31 includes two belt mounting parts connected sequentially along its axial direction. The synchronous belts 33 of the two belt drive assemblies 3 are respectively sleeved on the two belt mounting parts and the pulley 32. The pressure wheel 35 and the drive wheel 31 are respectively connected to the outer wall and inner wall of the synchronous belt 33, respectively, for pressing the two synchronous belts 33 onto each of the belt mounting parts.

[0122] It should be noted that there is one drive unit 1 and one drive wheel 31, and two synchronous belts 33. The inner walls of the two synchronous belts 33 have internal teeth, and the outer walls of the synchronous belts 33 can be smooth or have external teeth. The drive wheel 31 has two belt mounting portions for winding one synchronous belt 33 around it. There can be at least one clamping wheel 35, which is arranged circumferentially around the drive wheel 31 to clamp the two synchronous belts 33 onto the respective belt mounting portions of the drive wheel 31.

[0123] Specifically, the drive unit 1 operates to drive the drive wheel 31 to rotate. At this time, the drive wheel 31 can drive the two synchronous belts 33 to transmit synchronously, so that the two first slide rails 21 connected to the two synchronous belts 33 can move synchronously relative to the second slide rail 22. This not only enables the seat body 5 to adjust its position relative to the vehicle floor, such as moving forward or backward or left or right, but also makes the position adjustment action of the seat body 5 more stable.

[0124] In one embodiment of the present invention, combined with Figure 16 As shown, the belt drive assembly 3 further includes a first pressure wheel 351, a second pressure wheel 352, and a third pressure wheel 353. The synchronous belt 33 has internal teeth and external teeth. The internal teeth of one synchronous belt 33 are sleeved on one pulley 32 and the first pressure wheel 351. The internal teeth of another synchronous belt 33 are sleeved on another pulley 32, the second pressure wheel 352, the third pressure wheel 353, and the drive wheel 31. The third pressure wheel 353 is disposed on one side of the drive wheel 31 and connected to the external teeth of the other synchronous belt 33, for pressing the other synchronous belt 33 onto the drive wheel 31. The two synchronous belts 33 are connected by the meshing of the external teeth.

[0125] The first clamping wheel 351 and the second clamping wheel 352 are disposed between the slide rail bodies 221 of the two second slide rails 22, and the first clamping wheel 351 is disposed on one side of the second clamping wheel 352 for clamping the meshing part of the two timing belts 33.

[0126] It should be noted that there is one drive unit 1 and one drive wheel 31, and two synchronous belts 33. The inner and outer walls of the two synchronous belts 33 are respectively provided with internal teeth and external teeth. The first clamping wheel 351, the second clamping wheel 352, and the third clamping wheel 353 are installed in different positions. For example, there is at least one first clamping wheel 351, which can be set on the left side of the center position of the two slide rail bodies 221. There is at least one second clamping wheel 352, which can be set on the right side of the center position of the two slide rail bodies 221. The first clamping wheel 351 and the second clamping wheel 352 are arranged opposite each other to make the two synchronous belts 33 mesh tightly. The third clamping wheel 353 is arranged around the drive wheel 31 to press the synchronous belt 33 wrapped around the drive wheel 31 and the pulley 32 onto the drive wheel 31 to prevent the synchronous belt 33 from detaching from the drive wheel 31.

[0127] Specifically, the drive unit 1 operates to drive the drive wheel 31 to rotate. At this time, the drive wheel 31 can drive a synchronous belt 33 to drive, and then the synchronous belt 33 drives another synchronous belt 33 to drive. In other words, the transmission speed of the two synchronous belts 33 is the same, so that the two first slide rails 21 connected to the two synchronous belts 33 can move synchronously relative to the second slide rail 22. This not only realizes the position adjustment of the seat body 5 or the armrest box body relative to the vehicle floor, such as moving forward or backward or left or right, but also makes the position adjustment action of the seat body 5 and the armrest box body more stable.

[0128] In one embodiment of the present invention, combined with Figure 17 and Figure 18 As shown, the belt drive assembly 3 also includes an elastic tensioner 38, which is disposed below the pulley fixing member 222 and on one side of the pulley 32. The elastic tensioner 38 is connected to one of the pulleys 32 and is used to adjust the position of the pulleys 32 during the assembly stage so that the tension of the two synchronous belts 33 is consistent.

[0129] It should be noted that the elastic tensioner 38 is positioned below the pulley fixing member 222 and on one side of the pulley 32, thereby providing safety protection for both the elastic tensioner 38 and the pulley 32 through the pulley fixing member 222. The extension direction of the elastic tensioner 38 is consistent with the arrangement direction of the two pulleys 32, so that when adjusting the tension of the synchronous belt 33 during assembly, the position of the pulleys 32 can be effectively and quickly adjusted to the correct position, ensuring that the tension of the two synchronous belts 33 is consistent, thus guaranteeing the synchronous sliding of the upper and lower slide rails.

[0130] Normally, due to the assembly tolerance between the two pulleys 32 and the inconsistency in the tension of the two synchronous belts 33 during the assembly stage, the synchronous belts 33 may spin freely, affecting the electric adjustment of the position of the seat body 5 or the armrest box body. In this embodiment, by setting the elastic tensioner 38 on one side of the pulley 32, with one end of the elastic tensioner 38 fixed and the other end connected to a pulley 32, the position of the pulley 32 can be adjusted by elastic deformation to adjust the tension of the synchronous belt 33. After the synchronous belt 33 is tensioned, the position of the pulley 32 is fixed, thereby ensuring that the tension of the synchronous belts 33 in the two slide rail bodies 221 is the same, so that the position adjustment of the seat body 5 or the armrest box body relative to the vehicle floor is more stable.

[0131] In one embodiment of the present invention, combined with Figure 17As shown, when the elastic tensioning member 38 is a compression spring, the elastic tensioning member 38 is disposed between the two pulleys 32 and near one of the pulleys 32. By restoring elasticity through the compression spring, the pulley 32 on the side of the compression spring can be moved away from the other pulley 32 under the operation of the operator. In other words, the distance between the two pulleys 32 is increased to effectively adjust the tension of the timing belt 33.

[0132] It should be noted that, Figure 17 In the diagram, the dashed compression spring and pulley 32 represent the positions before the tension adjustment of the synchronous belt 33, while the solid lines represent the positions after the tension adjustment of the synchronous belt 33.

[0133] Combination Figure 18 As shown, when the elastic tensioning member 38 is a tension spring, the elastic tensioning member 38 is disposed on the side of one of the pulleys 32 away from the other pulley 32. By the tensioning force of the tension spring, the pulley 32 on the side of the tension spring can be moved away from the other pulley 32 under the operation of the operator. In other words, the distance between the two pulleys 32 is increased to adjust the tension of the timing belt 33.

[0134] It should be noted that, Figure 18 In the diagram, the dashed compression spring and pulley 32 represent the positions before the tension adjustment of the synchronous belt 33, while the solid lines represent the positions after the tension adjustment of the synchronous belt 33.

[0135] In one embodiment of the present invention, combined with Figure 19 , Figure 20 and Figure 21 As shown, the first slide rail 21 includes at least two slide rail components, which are spaced apart along an extension direction perpendicular to themselves. Each slide rail component includes a moving component 212 and a first guide rail portion 211. The first guide rail portion 211 is disposed on a side perpendicular to the extension direction of the first slide rail 21. Two sets of moving components 212 are spaced apart along an extension direction perpendicular to the first slide rail 21, and are respectively connected to the first guide rail portion 211. The slide rail body 221 includes a second guide rail portion 2211, in which the first guide rail portion 211 is embedded. Each set of two moving components 212 is located within the second guide rail portion 2211 and is used to move relative to the second guide rail portion 2211. The synchronous belt 33 is located between the moving component 212 and the second guide rail portion 2211.

[0136] It should be noted that each slide rail component includes two sets of moving parts 212. For example, the slide rail component on the left side includes two sets of moving parts 212. When each set of moving parts includes two moving parts 212, the two moving parts 212 are respectively installed at both ends of the extension direction of the first guide rail part 211, thereby increasing the support load of the second slide rail 22 on the first slide rail 21. The number of slide rail components in the first slide rail 21 matches the number of slide rail bodies 221 in the second slide rail 22. The synchronous belt 33 is located between the moving parts 212 and the second guide rail part 2211. In other words, the synchronous belt 33 is installed inside the slide rail body 221, thereby shielding and protecting the synchronous belt 33 through the slide rail body 221 to prevent debris from intruding into other components of the belt drive assembly 3 through the synchronous belt 33, thus affecting the transmission operation.

[0137] Since the first guide rail portion 211 and the moving member 212 are respectively disposed within the corresponding second guide rail portion 2211, the first guide rail portion 211 not only guides the movement of the moving member 212 within the second guide rail portion 2211, but also prevents the first guide rail portion 211 from detaching from the second guide rail portion 2211, thereby improving the stability of the movement of the first guide rail portion 211 relative to the second guide rail portion 2211. The moving member 212 and the first guide rail portion 211 can be connected to form a whole first slide rail 21, thereby facilitating the assembly operation of the first slide rail 21 and the second slide rail 22.

[0138] Specifically, the moving part 212 can be a roller structure or a slide rail structure. Any moving part 212 that can move smoothly on the second slide rail 22 is applicable to this technical solution and is not specifically limited here.

[0139] In one embodiment of the present invention, combined with Figure 20 As shown, the slide rail body 221 also includes a support portion 2212, which is disposed between the two second guide rail portions 2211, and the top surface of the support portion 2212 is lower than the bottom surface of the second guide rail portion 2211.

[0140] It should be noted that the slide rail body 221 may include two second guide rail portions 2211. Since the support portion 2212 is disposed between the two second guide rail portions 2211, connecting the two second guide rail portions 2211 to form an integral slide rail body 221, the support portion 2212 and the two second guide rail portions 2211 can be integrally formed, thereby improving the mechanical strength of the slide rail body 221. The top surface of the support portion 2212 is lower than the bottom surface of the second guide rail portion 2211. The bottom of the support portion 2212 can be disposed on the vehicle floor, and the moving member 212 moves within the second guide rail portion 2211. In other words, the bottom surface of the moving member 212 is also higher than the top surface of the support portion 2212, thereby effectively preventing debris on the vehicle floor from entering the moving member 212 from the end of the slide rail body 221 and causing jamming, thus reducing the failure rate of the electric guide rail device.

[0141] In one embodiment of the present invention, combined with Figure 20 and Figure 21 As shown, the electric guide rail device also includes a connector 4, which includes a first connecting seat 41 and a second connecting seat 42. The first connecting seat 41 is connected to the first guide rail portion 211 of the first slide rail 21. The first connecting seat 41 is connected to the second connecting seat 42, and the first connecting seat 41 and / or the second connecting seat 42 are provided with mounting grooves. A portion of the synchronous belt 33 passes through the mounting grooves. The first connecting seat 41 is connected to the second connecting seat 42.

[0142] It should be noted that the first connecting seat 41 is connected to the first guide rail 211. When the first connecting seat 41 is connected to the second connecting seat 42, an installation groove can be provided on the connector 4 so that the synchronous belt 33 can pass through the installation groove. Since the first connecting seat 41 is connected to the first guide rail 211 and the connector 4 is connected to the synchronous belt 33, the connector 4 connects the partial structure of the synchronous belt 33 to the first slide rail 21 so that the synchronous belt 33 can drive the first slide rail 21 to move relative to the second slide rail 22 during transmission.

[0143] Combination Figure 21 As shown, the first connecting seat 41 and the second connecting seat 42 can be detachably connected. This not only connects the synchronous belt 33 and the first slide rail 21 into a single structure via the connecting piece 4, facilitating the movement of the synchronous belt 33 relative to the first slide rail 21 relative to the second slide rail 22, but also provides convenience for the repair of the synchronous belt 33. Specifically, the first connecting seat 41 and the second connecting seat 42 can be connected by bolts.

[0144] Combination Figure 22As shown, the first connecting seat 41 and the second connecting seat 42 can be integrally formed, with an installation groove provided on the first connecting seat 41, or an installation groove provided on the second connecting seat 42, or an installation groove provided on both the first connecting seat 41 and the second connecting seat 42.

[0145] Combination Figure 19 As shown, another embodiment of the present invention provides a seat assembly, including the electric guide rail device as described above, and a seat body 5, wherein the seat body 5 is connected to a first slide rail 21 of the electric guide rail device; the extending directions of the first slide rail 21 and the second slide rail 22 are parallel to the moving direction of the seat body 5.

[0146] It should be noted that the parallelism between the extending directions of the first slide rail 21 and the second slide rail 22 and the moving direction of the seat body 5 means that if the extending directions of the first slide rail 21 and the second slide rail 22 are consistent with the longitudinal direction of the vehicle, the seat body 5 can be adjusted in the longitudinal (driving direction) direction via the first slide rail 21 relative to the second slide rail 22 on the vehicle floor; if the extending directions of the first slide rail 21 and the second slide rail 22 are consistent with the lateral direction of the vehicle, the seat body 5 can be adjusted in the lateral direction via the first slide rail 21 relative to the second slide rail 22 on the vehicle floor. The seat assembly has at least all the technical effects of the electric guide rail device, which will not be elaborated further here.

[0147] Another embodiment of the present invention provides a central armrest box, including the electric guide rail device as described above, and an armrest box body, wherein the armrest box body is connected to a first slide rail 21 of the electric guide rail device; the extending directions of the first slide rail 21 and the second slide rail 22 are parallel to the moving direction of the armrest box body.

[0148] It should be noted that the center armrest box itself is a storage device located between the driver's seat and the passenger seat. It is typically situated in the space between the seat and the center console, providing additional storage space for small items such as wallets, mobile phones, and keys. The armrest box can also function as an armrest, providing additional comfort and support. The fact that the extension directions of the first slide rail 21 and the second slide rail 22 are parallel to the movement direction of the armrest box body means that if the extension directions of the first slide rail 21 and the second slide rail 22 are aligned with the longitudinal direction of the vehicle, the armrest box body can be adjusted in the longitudinal (driving direction) direction via the first slide rail 21 relative to the second slide rail 22 on the vehicle floor. If the vehicle's interior space is large enough, the extension directions of the first slide rail 21 and the second slide rail 22 can be aligned with the lateral direction of the vehicle, allowing the armrest box body to be adjusted in the lateral direction via the first slide rail 21 relative to the second slide rail 22 on the vehicle floor. The center armrest box possesses at least all the technical effects of an electric guide rail device, which will not be elaborated upon here.

[0149] Another embodiment of the present invention provides an automobile, including a seat assembly as described in the above embodiment, or a center armrest box as described in the above embodiment, or an electric guide rail device as described in the above embodiment.

[0150] It should be noted that the automobile also includes the vehicle floor, and the second slide rail 22 in the seat assembly can be mounted on the vehicle floor. The automobile has at least all the technical effects of the seat assembly, center armrest, or electric guide rail device, but no specific limitations are made here.

[0151] While the present invention has been disclosed above, its scope of protection is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and all such changes and modifications will fall within the scope of protection of the present invention.

Claims

1. An electric guide rail device, characterized in that, The system includes a slide rail assembly (2), a drive unit (1), and a belt drive assembly (3). The slide rail assembly (2) includes a first slide rail (21) disposed on the seat body (5) or the armrest box body and a second slide rail (22) disposed on the vehicle floor. The first slide rail (21) and the second slide rail (22) are slidably engaged. The belt drive assembly (3) includes a drive wheel (31), a pulley (32), and a timing belt (33). At least a portion of the timing belt (33) is disposed on the second slide rail (22). The timing belt (33) is wound around the drive wheel (31) and the pulley (32). The drive unit (1) is connected to the drive wheel (31) and is used to drive the drive wheel (31) to rotate. The timing belt (33) is connected to the first slide rail (21). The central axes of the drive wheel (31) and the pulley (32) are both arranged in the vertical direction; The second slide rail (22) includes a slide rail body (221) and a pulley fixing member (222). The pulley fixing member (222) is disposed on the side of the slide rail body (221) in the width direction. At least a portion of the belt drive assembly (3) is disposed on the pulley fixing member (222). The belt drive assembly (3) further includes an elastic tensioner (38), which is located below the pulley fixing member (222) and on one side of the pulley (32). The elastic tensioner (38) is connected to one of the pulleys (32) and is used to adjust the position of the pulley (32) during the assembly stage so that the tension of the two synchronous belts (33) is consistent.

2. The electric guide rail device according to claim 1, characterized in that, The pulley fixing member (222) includes a pulley mounting base (2221) and a protective cover (2222). The pulley mounting base (2221) is disposed at the end of the protective cover (2222) along the extension direction of the second slide rail (22). The pulley (32) is mounted on the pulley mounting base (2221). The drive wheel (31) and the pulley (32) are disposed on the protective cover (2222).

3. The electric guide rail device according to claim 1, characterized in that, The second slide rail (22) includes two belt drive assemblies (3), and includes at least two slide rail bodies (221). The at least two slide rail bodies (221) are spaced apart along an extension direction perpendicular to themselves, and the synchronous belts (33) of the two belt drive assemblies (3) are respectively inserted into the two slide rail bodies (221).

4. The electric guide rail device according to claim 3, characterized in that, The device includes two drive units (1), each drive unit (1) being connected to a drive wheel (31) in each belt drive assembly (3). The belt drive assembly (3) also includes a plurality of pressure wheels (35), a portion of which are arranged circumferentially around one drive wheel (31), and another portion of which are arranged circumferentially around the other drive wheel (31).

5. The electric guide rail device according to claim 3, characterized in that, It also includes a drive unit (1), the synchronous belt (33) of the belt drive assembly (3) is inserted into the corresponding second slide rail (22), the drive unit (1) is connected to the drive wheel (31) in one of the belt drive assemblies (3), and one belt drive assembly (3) is connected to another belt drive assembly (3) for driving the other belt drive assembly (3) to operate.

6. The electric guide rail device according to claim 5, characterized in that, The drive wheel (31) includes a belt mounting part and a toothed part connected sequentially along its axial direction. The synchronous belt (33) is sleeved on the belt mounting part. The toothed part in one belt drive assembly (3) is engaged with the toothed part in another belt drive assembly (3).

7. The electric guide rail device according to claim 5, characterized in that, The belt drive assembly (3) further includes a pressure wheel (35) and a transmission gear (36). The drive wheel (31) includes a belt mounting part and a toothed part connected sequentially along its axial direction. The synchronous belt (33) is wound around the pulley (32), the belt mounting part of the drive wheel (31), and the pressure wheel (35). The toothed part in one belt drive assembly (3) is meshed with the toothed part in another belt drive assembly (3) through the transmission gear (36).

8. The electric guide rail device according to claim 5, characterized in that, One of the belt drive assemblies (3) further includes a drive belt (37), a first drive wheel (311) and a second drive wheel (312), and another belt drive assembly (3) further includes a third drive wheel (313). The drive unit (1) is connected to the second drive wheel (312), the second drive wheel (312) is meshed with the first drive wheel (311), the second drive wheel (312) is connected to the third drive wheel (313) via the drive belt (37), and the first drive wheel (311) and the third drive wheel (313) are respectively connected to the synchronous belts (33) of the two belt drive assemblies (3).

9. The electric guide rail device according to claim 5, characterized in that, The inner and outer walls of the synchronous belt (33) have internal teeth and external teeth respectively. The internal teeth of the synchronous belt (33) are sleeved on the pulley (32) and the drive wheel (31). The synchronous belts (33) in the two belt drive assemblies (3) are connected by the external teeth. The drive wheels (31) in the two belt drive assemblies (3) are arranged opposite to each other to press the meshing points of the two synchronous belts (33).

10. The electric guide rail device according to claim 3, characterized in that, The belt drive assembly (3) further includes a pressure wheel (35) and a drive wheel (31). The drive wheel (31) includes two belt mounting parts connected sequentially along its axial direction. The synchronous belts (33) of the two belt drive assemblies (3) are respectively sleeved on the two belt mounting parts and the pulley (32). The pressure wheel (35) and the drive wheel (31) are respectively connected to the outer wall and inner wall of the synchronous belt (33) to press each synchronous belt (33) onto each belt mounting part.

11. The electric guide rail device according to claim 3, characterized in that, The belt drive assembly (3) further includes a first pressure wheel (351), a second pressure wheel (352), and a third pressure wheel (353). The synchronous belt (33) has internal teeth and external teeth. The internal teeth of one synchronous belt (33) are sleeved on one pulley (32) and the first pressure wheel (351). The internal teeth of another synchronous belt (33) are sleeved on another pulley (32), the second pressure wheel (352), and the drive wheel (31). The third pressure wheel (353) is disposed on one side of the drive wheel (31) and connected to the external teeth of the other synchronous belt (33) for pressing the other synchronous belt (33) onto the drive wheel (31). The two synchronous belts (33) are connected by the meshing of the external teeth. The first clamping wheel (351) and the second clamping wheel (352) are disposed between the slide rail bodies (221) of the two second slide rails (22), and the first clamping wheel (351) is disposed on one side of the second clamping wheel (352) for clamping the meshing point of the two synchronous belts (33).

12. The electric guide rail device according to claim 1, characterized in that, The first slide rail (21) includes at least two slide rail components, which are spaced apart along an extension direction perpendicular to themselves. Each slide rail component includes a moving component (212) and a first guide rail portion (211). The first guide rail portion (211) is disposed on a side perpendicular to the extension direction of the first slide rail (21). Two sets of moving components (212) are spaced apart along an extension direction perpendicular to the first slide rail (21), and the two sets of moving components (212) are respectively connected to the first guide rail portion (211). The slide rail body (221) includes a second guide rail portion (2211). The first guide rail portion (211) is embedded in the second guide rail portion (2211). Each set of two moving components (212) is located in the second guide rail portion (2211) and is used to move relative to the second guide rail portion (2211). The synchronous belt (33) is located between the moving component (212) and the second guide rail portion (2211).

13. The electric guide rail device according to claim 12, characterized in that, The slide rail body (221) also includes a support part (2212), which is disposed between the two second guide rail parts (2211), and the top surface of the support part (2212) is lower than the bottom surface of the second guide rail parts (2211).

14. The electric guide rail device according to claim 12, characterized in that, It also includes a connector (4), which includes a first connector (41) and a second connector (42). The first connector (41) is connected to the first guide rail portion (211) of the first slide rail (21). The first connector (41) is connected to the second connector (42), and the first connector (41) and / or the second connector (42) are provided with mounting grooves. A portion of the synchronous belt (33) passes through the mounting grooves. The first connector (41) is connected to the second connector (42).

15. A seat assembly, characterized in that, The device includes the electric guide rail device as described in any one of claims 1 to 14, and further includes a seat body (5), the seat body (5) being connected to a first slide rail (21) of the electric guide rail device; the extending directions of the first slide rail (21) and the second slide rail (22) are parallel to the moving direction of the seat body (5).

16. A central armrest box, characterized in that, The device includes the electric guide rail device as described in any one of claims 1 to 14, and further includes an armrest box body, the armrest box body being connected to a first slide rail (21) of the electric guide rail device; the extending directions of the first slide rail (21) and the second slide rail (22) are parallel to the moving direction of the armrest box body.

17. A car, characterized in that, Includes the seat assembly as claimed in claim 15, or the center armrest box as claimed in claim 16, or the electric guide rail device as claimed in any one of claims 1 to 14.

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