Slide rail assembly and reduction gearbox of slide rail assembly

Abstract

The sliding rail assembly comprises a lead screw (3000), the reduction gearbox (1000) comprises a shell (1100) and a speed reduction transmission mechanism (1200), the shell (1100) comprises a transverse shell part (1000A) and an avoiding shell part (1000B), the transverse shell part (1000A) and the avoiding shell part (1000B) are arranged in an included angle mode, the speed reduction transmission mechanism (1200) comprises an input wheel component (1210), a transmission wheel component (1220) and an output wheel component (1230), and the transmission wheel component (1220) is connected with the input wheel component (1210). The input wheel part (1210) and the transmission wheel part (1220) are both installed on the avoiding shell part (1120), the output wheel part (1230) is installed on the transverse shell part (1000A), the input wheel part (1210) is in transmission connection with the output wheel part (1230) through the transmission wheel part (1220), the output wheel part (1230) is arranged on the lead screw (3000) in a sleeving mode, and the output wheel part (1230) is in transmission connection with the lead screw (3000). The avoiding shell part of the reduction gearbox can avoid the space above the lead screw, and interference with a protection component above the lead screw can be avoided.

Description

Technical Field

[0001] The present invention relates to the field of vehicle technology, and in particular to a slide rail assembly and a reduction gearbox of the slide rail assembly, wherein the slide rail assembly can be specifically applied in a vehicle to adjust the installation position of a seat body inside the vehicle. Background Art

[0002] The slide rail assembly includes a slide rail component and a drive component. The slide rail component includes an upper rail component and a lower rail component. The upper rail component is connected to the seat body, and the lower rail component can be connected to the vehicle floor through screws and other connectors. The drive component includes a drive motor, a gear box and a screw. The screw is fixed inside the lower rail component, the gear box is connected to the upper rail component, and the drive motor is connected through the gear box and the screw. In this way, when the drive motor is started, the gear box can drive the upper rail component to move along the screw, so that the installation position of the seat body can be adjusted.

[0003] In the related art, the gearbox is usually a rectangular parallelepiped structure, including a lower end and an upper end. The lower end is used to connect to the screw, and the upper end is located directly above the lower end, that is, directly above the screw. In this case, if a protective component in the form of a dust strip or the like is provided directly above the screw, when the gearbox moves along the screw, the upper end will interfere with the protective component.

[0004] Therefore, how to provide a solution to overcome or alleviate the above-mentioned defects is still a technical problem that needs to be solved urgently by those skilled in the art. Summary of the invention

[0005] The object of the present invention is to provide a slide rail assembly and a reduction gearbox of the slide rail assembly, wherein the reduction gearbox includes a transverse shell portion and an avoidance shell portion, and the avoidance shell portion can avoid the space above the screw rod to avoid interference with the protective component above the screw rod.

[0006] In order to solve the above technical problems, the present invention provides a reduction gearbox of a slide rail assembly, the slide rail assembly includes a screw rod, the reduction gearbox includes a shell and a reduction transmission mechanism, the shell includes a transverse shell portion and an avoidance shell portion, the transverse shell portion and the avoidance shell portion are arranged at an angle, the reduction transmission mechanism includes an input wheel component, a transmission wheel component and an output wheel component, the input wheel component and the transmission wheel component are both installed on the avoidance shell portion, the output wheel component is installed on the transverse shell portion, the input wheel component is transmission-connected to the output wheel component through the transmission wheel component, the output wheel component is outermostly disposed on the screw rod, and the output wheel component and the screw rod are transmission-connected.

[0007] With the above solution, an output wheel component is provided in the transverse shell portion, and the output wheel component can be connected to the screw rod through an outer sleeve, that is, the transverse shell portion can be outer sleeved on the screw rod. The avoidance shell portion and the transverse shell portion can be arranged at an angle, so that the avoidance shell portion can avoid the space above the screw rod. In this way, when the protective component is installed above the screw rod, the reduction box will basically not interfere with the protective component, which can facilitate the installation of the protective component and is conducive to building reliable protection for the screw rod.

[0008] Optionally, the outer shell includes a first shell and a second shell of a split type, the first shell and the second shell are connected to each other along the axial direction of the screw rod, the first shell and the second shell both include a transverse shell segment and an avoidance shell segment arranged at an angle, the two transverse shell segments are combined to form the transverse shell portion, and the two avoidance shell segments are combined to form the avoidance shell portion.

[0009] Optionally, the input wheel component includes an input wheel body and two first bushings, the two first bushings are arranged at the two axial ends of the input wheel body; the first shell is provided with two first groove bodies, and the second shell is provided with two second groove bodies, the two first groove bodies can be respectively connected with the two second groove bodies to form two accommodating holes, and the two first bushings are respectively installed in the two accommodating holes.

[0010] Optionally, the transmission wheel component includes a transmission wheel body and two rolling bearings, the two rolling bearings are respectively arranged at the axial ends of the transmission wheel body, the rolling bearing includes an inner ring and an outer ring, and there is a bearing clearance between the inner ring and the outer ring; and / or, the output wheel component includes an output wheel body, two thrust bearings and two second bushings, the two thrust bearings are respectively arranged at the axial ends of the output wheel body, the two second bushings are respectively arranged on the side of the two thrust bearings away from the output wheel body, and the output wheel component and the outer casing are arranged along the axial gap of the screw rod.

[0011] Optionally, the housing is provided with a positioning hole, the slide rail assembly includes an upper rail component, the upper rail component is provided with a positioning pin, the positioning hole is used to be plugged with the positioning pin, and the positioning hole and the positioning pin are clearance-matched in the radial direction.

[0012] Optionally, at least one of the input wheel body of the input wheel component and the transmission wheel body of the transmission wheel component is made of plastic; and / or the output wheel body of the output wheel component is made of one of copper alloy, wear-resistant steel, free-cutting steel, and plastic-metal multilayer composite material.

[0013] Optionally, a shock absorbing component is further included, the shock absorbing component includes a top shock absorbing component and two side shock absorbing components, the top shock absorbing component is arranged at the upper end of the shell, and the two side shock absorbing components are respectively arranged at two ends of the shell along the axial direction of the screw rod.

[0014] Optionally, one of the side shock absorbers and the housing is provided with a protruding portion, and the other of the side shock absorbers and the housing is provided with a recessed portion, and the protruding portion can be inserted into the recessed portion; and / or, the outer wall surfaces of the top shock absorber and the side shock absorber are both provided with slots; and / or, the top shock absorber is provided with an avoidance groove, and the avoidance groove can avoid the axial two ends of the input wheel component.

[0015] An embodiment of the present invention further provides a slide rail assembly, including a slide rail component, a reduction gearbox, a lead screw, and a protection component. The slide rail component includes an upper rail component and a lower rail component. The lead screw is installed on the lower rail component. The reduction gearbox is connected to the upper rail component, and the protection component is connected to the lower rail component. The protection component includes a covering portion located above the lead screw. The reduction gearbox is the reduction gearbox of the above slide rail assembly, and the avoidance shell portion laterally avoids the covering portion.

[0016] Optionally, it further includes a connecting piece for installing and fixing the lower rail component. The connecting piece includes a head located inside the lower rail component, and the head and the lead screw are arranged offset in the lateral direction. Description of the Drawings

[0017] Figure 1 It is a partial structural diagram of a slide rail assembly provided by an embodiment of the present invention;

[0018] Figure 2 It is a connection structural diagram of the reduction gearbox and the lead screw;

[0019] Figure 3 It is an exploded view of the reduction gearbox;

[0020] Figure 4 It is an exploded view of the reduction gearbox after removing the shock absorption components.

[0021] Reference Signs:

[0022] 1000 - Reduction gearbox; 1100 - Housing; 1100A - Lateral housing part; 1100B - Avoidance housing part; 1100C - Positioning hole; 1100D - Protrusion part; 1110 - First housing; 1111 - First lateral housing section; 1112 - First avoidance housing section; 1112A - First groove; 1120 - Second housing; 1121 - Second lateral housing section; 1122 - Second avoidance housing section; 1122A - Second groove; 1200 - Reduction drive mechanism; 1210 - Input wheel component; 1211 - Input wheel body; 1212 - First bushing; 1220 - Drive wheel component; 1221 - Drive wheel body; 1222 - Rolling bearing; 1230 - Output wheel component; 1231 - Output wheel body; 1232 - Thrust bearing; 1233 - Second bushing; 1300 - Shock-absorbing component; 1300A - Concave part; 1300B - Slotted; 1300C - Avoidance groove; 1310 - Top shock-absorbing piece; 1320 - Side shock-absorbing piece;

[0023] 2000 - Lower rail component; 2100 - Lower rail bottom plate; 2200 - Lower rail side plate; 2300 - Lower rail top plate; 2400 - Lower rail flange;

[0024] 3000 - Lead screw;

[0025] 4000 - Protection component; 4100 - Covering part;

[0026] 5000 - Connecting piece; 5100 - Head; 5200 - Rod part. Detailed implementation mode

[0027] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0028] In the description of the embodiments of the present invention, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features.

[0029] In the description of the embodiments of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, "connected" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium.

[0030] In the embodiments of the present invention, the orientation terms mentioned, such as "inner", "outer", etc., are only references to the directions in the attached drawings. Therefore, the orientation terms used are for better and clearer description and understanding of the embodiments of the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the embodiments of the present invention.

[0031] In the description of the embodiments of the present invention, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising a..." does not exclude the presence of additional identical elements in the process, method, article or device comprising such element.

[0032] In the description of the embodiments of the present invention, "and / or" is merely a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B may represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this article generally represents an "or" relationship between the associated objects before and after.

[0033] Please refer to Figures 1-4 , Figure 1 which is a partial structural diagram of a slide rail assembly provided by the embodiments of the present invention; Figure 2 is a connection structural diagram of a reduction gearbox and a lead screw; Figure 3 is an exploded view of the reduction gearbox; Figure 4 is an exploded view of the reduction gearbox after removing the shock-absorbing components.

[0034] The embodiments of the present invention provide a slide rail assembly, which may specifically be an electric slide rail assembly, including a slide rail assembly and a drive assembly.

[0035] The slide rail assembly has an extending direction. In the embodiments of the present invention, this extending direction can be defined as the longitudinal direction. In the mounting surface of the slide rail assembly, the direction perpendicular to this longitudinal direction can be defined as the transverse direction, and at the same time, the direction perpendicular to this mounting surface can be defined as the vertical direction, and the vertical direction is also called the up-and-down direction.

[0036] The slide rail assembly may include an upper rail component (not shown in the figure) and a lower rail component 2000. In some implementations, the slide rail assembly may include two slide rail components, and the two slide rail components may be arranged at intervals in the transverse direction to better slidably support the seat body, thereby improving the reliability of the installation and sliding displacement of the seat body inside the vehicle. Of course, in some other implementations of the embodiments of the present invention, the slide rail assembly may also include other numbers of slide rail components, for example, it may include one slide rail component, three slide rail components, etc.

[0037] In the slide rail assembly, the lower rail component 2000 is used to connect to the vehicle floor. Specifically, as Figure 1 shown, the lower rail component 2000 may include a lower rail bottom plate 2100, lower rail side plates 2200, lower rail top plates 2300, and lower rail flanges 2400. The number of the lower rail side plates 2200 may be two, and the two lower rail side plates 2200 may be respectively located on the transverse two sides of the lower rail bottom plate 2100. The number of the lower rail top plates 2300 may also be two, and the two lower rail top plates 2300 may be respectively connected to the two lower rail side plates 2200. The number of the lower rail flanges 2400 may also be two, and the two lower rail flanges 2400 may be respectively connected to the two lower rail top plates 2300.

[0038] The lower rail bottom plate 2100 may be connected to the vehicle floor through a connecting member 5000 in the form of a screw or the like. The connecting member 5000 may include a head 5100 and a rod portion 5200. The rod portion 5200 may be a threaded rod, which may pass through the lower rail bottom plate 2100 and be connected to the vehicle floor, and the head 5100 may be located inside the lower rail component 2000 and may be in abutment with the lower rail bottom plate 2100 in the vertical direction, so as to be able to connect and fix the lower rail component 2000. In this way, the connecting member 5000 is installed from the inside of the lower rail component 2000, which can reduce the requirement for the installation space of the vehicle body.

[0039] Combined with Figure 1 , during specific assembly, the head 5100 and the screw rod 3000 may be arranged in a staggered manner in the transverse direction. In this way, the installation interference between the head 5100 and the screw rod 3000 can be reduced, so that the installation of the lower rail component 2000 and the screw rod 3000 can be conveniently realized.

[0040] In the slide rail assembly, the upper rail component is used to connect to the seat body, and the specific connection method and the like are not limited herein.

[0041] The driving assembly includes a driving motor (not shown in the figure), a reduction gearbox 1000, and a lead screw 3000. The reduction gearbox 1000 can be connected to the upper rail component. The driving motor can be connected to the reduction gearbox 1000 through a transmission shaft such as a flexible shaft, and the reduction gearbox 1000 can be connected to the lead screw 3000. In this way, the reduction gearbox 1000 can be displaced along the lead screw 3000 under the drive of the driving motor, thereby driving the upper rail component to be displaced relative to the lower rail component 2000.

[0042] As Figures 1-3 shown, in the embodiment of the present invention, the reduction gearbox 1000 includes a housing 1100 and a reduction transmission mechanism 1200.

[0043] The housing 1100 includes a transverse housing portion 1100A and an avoidance housing portion 1100B. The transverse housing portion 1100A can extend substantially horizontally. The transverse housing portion 1100A and the avoidance housing portion 1100B are arranged at an angle. The reduction transmission mechanism 1200 includes an input wheel component 1210, a transmission wheel component 1220, and an output wheel component 1230. The input wheel component 1210 and the transmission wheel component 1220 are both installed on the avoidance housing portion 1100B. The output wheel component 1230 is installed on the transverse housing portion 1100A. The input wheel component 1210 is drivingly connected to the output wheel component 1230 through the transmission wheel component 1220. The output wheel component 1230 is sleeved on the lead screw 3000, and the output wheel component 1230 is drivingly connected to the lead screw 3000.

[0044] With the above solution, the output wheel component 1230 is arranged in the transverse housing portion 1100A. The output wheel component 1230 can be sleeved and connected to the lead screw 3000, that is, the transverse housing portion 1100A can be sleeved on the lead screw 3000. The avoidance housing portion 1100B and the transverse housing portion 1100A can be arranged at an angle, so that the avoidance housing portion 1100B can avoid the upper space of the lead screw 3000. In this way, when the protective component 4000 is installed above the lead screw 3000, the reduction gearbox 1000 basically does not interfere with the protective component 4000, which is convenient for the installation of the protective component 4000 and is beneficial to building a reliable protection for the lead screw 3000.

[0045] Here, the embodiment of the present invention does not limit the specific value of the angle between the transverse housing portion 1100A and the avoidance housing portion 1100B. In actual applications, those skilled in the art can select according to specific needs as long as the requirements of use can be met. For example, the angle can be 90 degrees. At this time, the avoidance housing portion 1100B can be substantially vertically extended. For another example, the angle can also be non-90 degrees, such as 80 degrees, 110 degrees, 120 degrees, 130 degrees, etc., as long as the avoidance housing portion 1100B can reliably avoid the protective component 4000. The dividing line between the transverse housing portion 1100A and the avoidance housing portion 1100B can be substantially referred to Figure 1The dashed line shown in

[0046] See Figure 1 , the protective component 4000 can be generally T-shaped, including a top plate portion and a vertical plate portion. The vertical plate portion is used for installing with the lower rail component 2000, and the specific installation method can be, for example, snap connection, etc., which is not limited herein. The top plate portion has a covering portion 4100. The covering portion 4100 can be located above the lead screw 3000 and can cover and protect the lead screw 3000, reducing the possibility of the lead screw 3000 being abnormally stepped on or dust contaminated.

[0047] In some implementation manners, as Figure 3 shown, the housing 1100 can include a split first housing 1110 and a second housing 1120. The split design of the housing 1100 can facilitate the installation or disassembly of the aforementioned speed reduction transmission mechanism 1200 in the housing 1100.

[0048] The first housing 1110 and the second housing 1120 can be specifically butted along the axial direction of the lead screw 3000, that is, they can be butted longitudinally. The connection manner between the first housing 1110 and the second housing 1120 can be, for example, screw connection, snap connection, riveting, etc., which is not limited herein as long as the reliability requirement of the connection can be satisfied.

[0049] Both the first housing 1110 and the second housing 1120 can include a transverse shell segment and an avoidance shell segment arranged at an angle. For ease of description, the transverse shell segment and the avoidance shell segment of the first housing 1110 can be respectively referred to as the first transverse shell segment 1111 and the first avoidance shell segment 1112, and the transverse shell segment and the avoidance shell segment of the second housing 1120 can be respectively referred to as the second transverse shell segment 1121 and the second avoidance shell segment 1122. The first transverse shell segment 1111 and the second transverse shell segment 1121 can be combined to form the aforementioned transverse shell portion 1100A, and the first avoidance shell segment 1112 and the second avoidance shell segment 1122 can be combined to form the aforementioned avoidance shell portion 1100B.

[0050] In some implementation manners, in combination with Figure 4 , the input wheel component 1210 can include an input wheel body 1211 and two first bushings 1212. The input wheel body 1211 can be specifically a worm, etc., and the two first bushings 1212 can be arranged at both axial ends of the input wheel body 1211.

[0051] The first housing 1110 can be provided with two first slots 1112A, and the second housing 1120 can be provided with two second slots 1122A. After the first housing 1110 and the second housing 1120 are butted longitudinally, the two first slots 1112A can be respectively butted with the two second slots 1122A to form two accommodation holes (not labeled in the figure).

[0052] The two first bushings 1212 can be respectively installed in the two receiving holes. An interference fit or a transition fit can be provided between the two first bushings 1212 and the receiving holes, which is not limited herein. The arrangement of the two first bushings 1212 can effectively eliminate the problem that the first housing 1110 and the second housing 1120 are not completely aligned after docking, and the first groove 1112A and the second groove 1122A do not completely align, that is, it can be used to reduce or eliminate manufacturing errors, so as to ensure the smooth rotation of the input wheel body 1211 and reduce the rotational friction between the input wheel body 1211 and the housing 1100. At the same time, the two first bushings 1212 can also be used as an installation and positioning reference, which can eliminate the problem that the two receiving holes are not completely concentric, and thus can effectively eliminate the rotational noise of the input wheel body 1211.

[0053] The above-mentioned first bushing 1212 can specifically be a plastic part or a powder metallurgy part, etc., which can effectively reduce the weight of the vehicle and is beneficial to achieving lightweight.

[0054] In some implementation manners, such as Figure 4 shown, the transmission wheel component 1220 can include a transmission wheel body 1221 and two rolling bearings 1222.

[0055] The two rolling bearings 1222 can be respectively arranged at the axial two ends of the transmission wheel body 1221. The first housing 1110 and the second housing 1120 can both be provided with a first receiving groove (not marked in the figure), and the rolling bearings 1222 can be installed in the first receiving grooves of the first housing 1110 and the second housing 1120 by means of a clearance fit or a transition fit, etc. Based on the above-mentioned implementation manner in which the first housing 1110 and the second housing 1120 are separately arranged longitudinally, the first receiving groove of the first housing 1110 can be separately formed by the first housing 1110, and the first receiving groove of the second housing 1120 can also be separately formed by the second housing 1120, that is, the first receiving groove is not formed by splicing two semi-circular grooves. In this way, there is no problem of non-concentricity of the two semi-circular grooves, so as to reduce errors and is beneficial to the reliable installation of the rolling bearings 1222 in the two first receiving grooves.

[0056] The rolling bearing 1222 can include an inner ring and an outer ring. There can be a bearing clearance between the inner ring and the outer ring, and the bearing clearance can include an axial clearance and a radial clearance, so that the inner ring can have a certain degree of floating and swinging relative to the outer ring, which can adapt to a certain manufacturing error, can reduce the manufacturing precision requirements for the first housing 1110 and the second housing 1120, and is beneficial to improving the transmission smoothness of the speed reduction transmission mechanism 1200.

[0057] Here, the embodiments of the present invention do not limit the specific number of the drive wheel components 1220. In practical applications, those skilled in the art can select according to specific needs as long as the requirements of use can be met. For example, the number of the drive wheel components 1220 can be at least two, and each drive wheel component 1220 can be arranged vertically. In this way, the installation height of the input wheel component 1210 can be lifted, which is beneficial to lifting the installation height of the drive motor, so that there can be a larger space below the drive motor, and it can better adapt to different usage scenarios. For example, in the scenario where the lower rail component 2000 is installed under the vehicle carpet, raising the drive motor can reduce the possibility of installation interference between the drive motor and the carpet.

[0058] In some implementation manners, the output wheel component 1230 may include an output wheel body 1231, two thrust bearings 1232, and two second bushings 1233.

[0059] The two thrust bearings 1232 can be respectively arranged at the axial two ends of the output wheel body 1231, and the two second bushings 1233 can be respectively arranged on the sides of the two thrust bearings 1232 away from the output wheel body 1231. Both the first housing 1110 and the second housing 1120 can be provided with second receiving grooves (not marked in the figure). The thrust bearings 1232 and the second bushings 1233 can be installed in the second receiving grooves of the first housing 1110 and the second housing 1120 by means of clearance fit or interference fit, etc. Based on the above implementation manner in which the first housing 1110 and the second housing 1120 are separately arranged longitudinally, the second receiving groove of the first housing 1110 can be formed independently by the first housing 1110, and the second receiving groove of the second housing 1120 can also be formed independently by the second housing 1120, that is, the second receiving groove is not formed by splicing two semi-circular grooves. In this way, the problem of non-concentricity of the two semi-circular grooves does not exist, so that the error can be reduced, which is beneficial to the reliable installation of the rolling bearing 1222 in the two second receiving grooves.

[0060] The thrust bearing 1232 can reduce the end face sliding friction between the output wheel body 1231 and the second bushing 1233, and can improve the rotation smoothness of the output wheel body 1231.

[0061] The second bushing 1233 can radially support the output wheel body 1231, and further, the second bushing 1233 can also adjust the axial installation clearance between the output wheel component 1230 and the housing 1100. In the embodiment of the present invention, through the arrangement of the second bushing 1233, the output wheel component 1230 and the housing 1100 can be arranged with a clearance along the axial direction (i.e., the longitudinal direction) of the lead screw 3000, and this clearance can be, for example, between 0.05 mm and 0.1 mm, so that the output wheel body 1231 can have a certain floating amount, can adapt to the installation and manufacturing errors of the lead screw 3000, and is beneficial to improving the smoothness of the displacement of the output wheel body 1231 along the lead screw 3000.

[0062] In some implementation manners, at least one of the input wheel body 1211 of the input wheel component 1210 and the transmission wheel body 1221 of the transmission wheel component 1220 is made of plastic material.

[0063] Taking the input wheel body 1211 as an example, when using plastic material, the input wheel body 1211 can be processed and formed by an integral injection molding process or the like, the molding process is more convenient, and the error adaptability is relatively better. Moreover, the plastic material is lighter in weight, which is more conducive to realizing the lightweight design of the vehicle. At the same time, it can also reduce the collision noise and vibration during the transmission process, and is also beneficial to improving the quality of the speed reducer provided by the embodiment of the present invention.

[0064] In specific practice, it can be that both the input wheel body 1211 and the transmission wheel body 1221 are made of plastic material. Or, one of the input wheel body 1211 and the transmission wheel body 1221 can also be made of metal material to form a combined transmission of plastic and metal. Or, when the number of the transmission wheel components 1220 is greater than two, it can be that the transmission wheel bodies 1221 of all the transmission wheel components 1220 are made of plastic material, or only some of the transmission wheel bodies 1221 of the transmission wheel components 1220 are made of plastic material.

[0065] In fact, in some other implementation manners of the embodiment of the present invention, it is also possible to set both the input wheel body 1211 and the transmission wheel body 1221 as metal materials, and this is also feasible.

[0066] In some implementation manners, the material of the output wheel body 1231 of the output wheel component 1230 can be copper alloy. The copper alloy has a relatively small friction coefficient and relatively good wear resistance, and can reduce the wear during the transmission process.

[0067] In addition, the output wheel component 1230 can also be made of one of wear-resistant steel, free-cutting steel, and plastic-metal multi-layer composite material.

[0068] In some implementation manners, the housing 1100 can also be provided with a positioning hole 1100C. CombiningFigure 2 and Figure 3 In the housing 1100, both the first housing 1110 and the second housing 1120 can be provided with the above-mentioned positioning holes 1100C.

[0069] The upper rail component can be provided with a positioning pin. Specifically, the upper rail component can be provided with a mounting bracket, and the positioning pin can be arranged on the mounting bracket. The positioning hole 1100C of the housing 1100 can be used for plugging with the positioning pin. Moreover, the positioning hole 1100C and the positioning pin can be in clearance fit in the radial direction, and the clearance can be specifically between 1 mm and 4 mm, for example, it can be 2 mm. In this way, there can be a certain floating amount between the speed reducer 1000 and the mounting bracket, so as to adapt to the manufacturing and installation errors of the lead screw 3000. At the same time, it can also prevent the large-angle rotation of the speed reducer 1000 relative to the lead screw 3000.

[0070] In some implementation manners, the speed reducer 1000 provided by the embodiment of the present invention may further include a shock-absorbing component 1300.

[0071] Such as Figure 2 and Figure 3 As shown, the shock-absorbing component 1300 can include a top shock-absorbing member 1310 and two side shock-absorbing members 1320. The top shock-absorbing member 1310 can be arranged at the upper end of the housing 1100 to eliminate the axial clearance between the top of the speed reducer 1000 and the mounting bracket, and further can reduce the noise between the top of the speed reducer 1000 and the mounting bracket. The two side shock-absorbing members 1320 can be respectively arranged at both ends of the housing 1100 along the axial direction of the lead screw 3000, and the two side shock-absorbing members 1320 can also be used to eliminate the collision noise between the speed reducer 1000 and other components.

[0072] Both the top shock-absorbing member 1310 and the side shock-absorbing members 1320 can be prepared from materials such as rubber that have a certain flexible deformation ability.

[0073] The top shock-absorbing member 1310 can be provided with an avoidance groove 1300C. The avoidance groove 1300C can avoid the axial two ends of the input wheel component 1210. At the same time, the top shock-absorbing member 1310 can also wrap the axial two ends of the input wheel component 1210 to a certain extent at the avoidance groove 1300C, so as to reduce the noise during the transmission of the input wheel component 1210.

[0074] Combined with Figure 4, among the side shock absorber 1320 and the housing 1100, one can be provided with a convex portion 1100D, and the other can be provided with a concave portion 1300A. During specific assembly, the convex portion 1100D can be inserted into the concave portion 1300A to achieve the installation and positioning of the side shock absorber 1320 on the housing 1100, and can reduce the possibility that the side shock absorber 1320 interferes with the lead screw 3000 due to deformation caused by interference fit during the installation process.

[0075] The specific structural shapes of the convex portion 1100D and the concave portion 1300A are not limited herein. In practical applications, those skilled in the art can design according to specific needs as long as they can meet the usage requirements. For example, the cross-section of the convex portion 1100D and the concave portion 1300A perpendicular to the longitudinal direction can be approximately rectangular, etc.

[0076] The outer wall surfaces of the top shock absorber 1310 and the side shock absorber 1320 can also be provided with slots 1300B. On the one hand, the slots 1300B can achieve a weight reduction effect, which is beneficial to the lightweight of the vehicle. On the other hand, the setting of the slots 1300B can also improve the deformability of the top shock absorber 1310 and the side shock absorber 1320, and can largely avoid the problem that the top shock absorber 1310 and the side shock absorber 1320 are in contact and squeezed but cannot be effectively deformed, resulting in difficulty in installing the speed reducer 1000; that is, the setting of the slots 1300B can facilitate the installation of the speed reducer 1000.

[0077] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art in the technical field, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A speed reducer housing of a slide rail assembly, the slide rail assembly including a lead screw (3000), characterized in that, The speed reducer (1000) includes a housing (1100) and a speed reduction transmission mechanism (1200). The housing (1100) includes a transverse housing portion (1100A) and an avoidance housing portion (1100B). The transverse housing portion (1100A) and the avoidance housing portion (1100B) are arranged at an angle. The speed reduction transmission mechanism (1200) includes an input wheel component (1210), a transmission wheel component (1220), and an output wheel component (1230). The input wheel component (1210) and the transmission wheel component (1220) are both installed on the avoidance housing portion (1100B), and the output wheel component (1230) is installed on the transverse housing portion (1100A). The input wheel component (1210) is drivingly connected to the output wheel component (1230) through the transmission wheel component (1220). The output wheel component (1230) is sleeved outside the lead screw (3000), and the output wheel component (1230) is drivingly connected to the lead screw (3000).

2. The speed reducer of the slide rail assembly according to claim 1, characterized in that The housing (1100) includes a split first housing body (1110) and a second housing body (1120). The first housing body (1110) and the second housing body (1120) are butted against each other along the axial direction of the lead screw (3000). Both the first housing body and the second housing body include a transverse housing segment and an avoidance housing segment that are arranged at an angle. The two transverse housing segments are combined to form the transverse housing portion (1100A), and the two avoidance housing segments are combined to form the avoidance housing portion (1100B).

3. The speed reducer of the slide rail assembly according to claim 2, characterized in that The input wheel component (1210) includes an input wheel body (1211) and two first bushings (1212). The two first bushings (1212) are arranged at the axial two ends of the input wheel body (1211). The first housing body (1110) is provided with two first grooves (1112A), and the second housing body (1120) is provided with two second grooves (1122A). The two first grooves (1112A) can be respectively butted against the two second grooves (1122A) to form two receiving holes, and the two first bushings (1212) are respectively installed in the two receiving holes.

4. The speed reducer of the slide rail assembly according to claim 2, characterized in that The transmission wheel component (1220) includes a transmission wheel body (1221) and two rolling bearings (1222). The two rolling bearings (1222) are respectively arranged at the axial two ends of the transmission wheel body (1221). The rolling bearing (1222) includes an inner ring and an outer ring, and there is a bearing clearance between the inner ring and the outer ring; and / or, The output wheel component (1230) includes an output wheel body (1231), two thrust bearings (1232), and two second bushings (1233). The two thrust bearings (1232) are respectively arranged at the axial two ends of the output wheel body (1231), and the two second bushings (1233) are respectively arranged on one side of the two thrust bearings (1232) away from the output wheel body (1231). The output wheel component (1230) and the housing (1100) are arranged with an axial clearance along the lead screw (3000).

5. The speed reducer of the slide rail assembly according to claim 1, characterized in that, The housing (1100) is provided with a positioning hole (1100C). The slide rail assembly includes an upper rail component, and the upper rail component is provided with a positioning pin. The positioning hole (1100C) is used for plugging with the positioning pin, and the positioning hole (1100C) and the positioning pin are in clearance fit in the radial direction.

6. The speed reducer of the slide rail assembly according to any one of claims 1-5, characterized in that, At least one of the input wheel body (1211) of the input wheel component (1210) and the transmission wheel body (1221) of the transmission wheel component (1220) is made of plastic material; and / or, The material of the output wheel body (1231) of the output wheel component (1230) is one of copper alloy, wear-resistant steel, free-cutting steel, and plastic-metal multi-layer composite material.

7. The speed reducer of the slide rail assembly according to any one of claims 1-5, characterized in that, It further includes a shock-absorbing component (1300). The shock-absorbing component (1300) includes a top shock-absorbing member (1310) and two side shock-absorbing members (1320). The top shock-absorbing member (1310) is arranged at the upper end of the housing (1100), and the two side shock-absorbing members (1320) are respectively arranged at the two axial ends of the housing (1100) along the lead screw (3000).

8. The speed reducer of the slide rail assembly according to claim 7, wherein One of the side shock-absorbing member (1320) and the housing (1100) is provided with a convex portion (1100D), and the other of the side shock-absorbing member (1320) and the housing (1100) is provided with a concave portion (1300A). The convex portion (1100D) can be plugged into the concave portion (1300A); and / or, The outer wall surfaces of the top shock-absorbing member (1310) and the side shock-absorbing member (1320) are both provided with slots (1300B); and / or, The top shock-absorbing member (1310) is provided with an avoidance groove (1300C), and the avoidance groove (1300C) can avoid the two axial end portions of the input wheel component (1210).

9. A slide rail assembly, characterized in that, It includes a slide rail assembly, a reduction gearbox (1000), a lead screw (3000) and a protective component (4000). The slide rail assembly includes an upper rail component and a lower rail component (2000). The lead screw (3000) is installed on the lower rail component (2000). The reduction gearbox (1000) is connected to the upper rail component. The protective component (4000) is connected to the lower rail component. The protective component (4000) includes a shielding portion (4100). The shielding portion (4100) is located above the lead screw (3000). The reduction gearbox (1000) is the reduction gearbox of the slide rail assembly according to any one of claims 1-8. The avoidance housing portion (1100B) laterally avoids the shielding portion (4100).

10. The slide rail assembly according to claim 9, wherein, It further includes a connecting piece (5000). The connecting piece (5000) is used for installing and fixing the lower rail component (2000). The connecting piece (5000) includes a head (5100). The head (5100) is located inside the lower rail component (2000). The head (5100) and the lead screw (3000) are arranged offset in the lateral direction.

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