Cross slide block mechanism, seat turntable mechanism and vehicle

Abstract

The embodiment provides a crosshead shoe mechanism, a seat turntable mechanism and a vehicle, the crosshead shoe mechanism comprises an outer sliding mechanism (01) and an inner sliding mechanism (02), the two ends of the inner sliding mechanism in the first direction are provided with protruding parts (021), the outer sliding mechanism is internally provided with a mounting hole (011), the two ends of the outer sliding mechanism in the first direction are provided with limiting parts (011a), and the protruding parts are slidably mounted in the limiting parts; containing grooves (012) are formed in the two ends of the outer sliding mechanism in the first direction, located in one side of the limiting part in the second direction and communicated with the limiting part. The anti-backlash device further comprises an anti-backlash block (03) and an elastic component (04), the anti-backlash block and the elastic component (04) are installed in the containing groove, the inner end wall of the anti-backlash block and the closed end wall of the containing groove are matched inclined faces (A), under the action of elastic force, the two inclined faces (A) abut against each other, the outer end wall of the anti-backlash block abuts against the opposite side wall of the protruding part, and the inclination angle of the inclined faces is smaller than the self-locking angle. The embodiment of the utility model meets the gapless requirement.

Description

Technical Field

[0001] The present application relates to the technical field of seats, and in particular to a cross slider mechanism, a seat turntable mechanism and a vehicle. Background Art

[0002] In a cross slider mechanism that requires sliding fit, since the sliding fit requires a sliding gap, and the gap must be guaranteed by the manufacturing tolerance and cannot be negative, there is usually a positive gap in actual use. When the cross slider mechanism is applied to the seat turntable mechanism, the positive gap will be reflected as free shaking in the rotation direction of the seat during the rotation process, affecting the user experience. Utility Model Content

[0003] The purpose of the present application is to provide a cross slider mechanism, a seat turntable mechanism and a vehicle, which meet the gap-free requirements, solve the free shaking in the rotation direction of the seat when the cross slider mechanism is applied to the seat turntable mechanism, and improve the user experience.

[0004] In order to solve the above technical problems, the present application provides a cross slide mechanism, including an outer sliding mechanism and an inner sliding mechanism, wherein the inner sliding mechanism is provided with protrusions extending in opposite directions at both ends in a first direction, and a mounting hole is provided inside the outer sliding mechanism, and the mounting hole has limit portions extending in opposite directions at both ends in the first direction, and in an installed state, the inner sliding mechanism is at least partially located inside the mounting hole, and the protrusion is at least partially located inside the corresponding limit portion, and the protrusion can move in the limit portion along the first direction;

[0005] The outer sliding mechanism is further provided with receiving grooves at both ends of the first direction, the receiving grooves are located on one side of the limiting portion in the second direction, and the receiving grooves are connected to the limiting portion;

[0006] It also includes a gap-eliminating block and an elastic component, both of which are installed inside the accommodating groove, the inner end wall of the gap-eliminating block and the closed end wall of the accommodating groove are matching inclined surfaces, the elastic component is located at one end of the first direction of the gap-eliminating block, and the elastic component is in an energy storage state. Under the elastic force of the elastic component, the inner end wall of the gap-eliminating block and the closed end wall of the accommodating groove abut, and the outer end wall of the gap-eliminating block and the opposite side walls of the protrusion directly or indirectly abut, the inclination angle of the inclined surface is smaller than the self-locking angle, and the first direction and the second direction are perpendicular to each other.

[0007] The cross slider mechanism of this embodiment is additionally provided with an eliminating block and an elastic component, and the outer sliding mechanism is additionally provided with a receiving groove for accommodating the eliminating block and the elastic component, the inner end wall of the eliminating block and the closed end wall of the receiving groove are arranged as matching inclined surfaces, and the self-locking property of the wedge block is utilized to specially design the inclination angle of the inclined surface so that the inclination angle of the inclined surface is smaller than the self-locking angle, that is, the eliminating block meets the self-locking condition and is theoretically not affected by the magnitude of the impact force, so that the inner end wall of the eliminating block is always in contact with the closed end wall of the receiving groove, and the outer end wall of the eliminating block is always in contact with the opposite side wall of the protrusion, thereby meeting the gap-free requirements under various working conditions. When the cross slider mechanism is applied to a seat turntable mechanism, the free shaking in the rotation direction when the seat rotates is eliminated, thereby improving the user experience.

[0008] Optionally, the inclination angle of the inclined surface is α, and the value range of α is 3°~30°.

[0009] Optionally, the accommodating grooves at both ends are located on the same side of the limiting portion in the second direction;

[0010] Alternatively, the accommodating grooves at both ends are located on different sides of the second direction of the limiting portion.

[0011] Optionally, the outer end wall of the clearance eliminating block is provided with one or more recessed parts, and the plurality of recessed parts are distributed along the first direction, and further comprises one or more rolling elements, and the rolling elements are partially movably installed inside the corresponding recessed parts.

[0012] Optionally, a rolling assembly is further included, and the outer end wall of the anti-backlash block and the opposite side wall of the protrusion are in rolling contact through the rolling assembly.

[0013] Optionally, a mounting groove is provided on the side wall of the raised portion facing the clearance eliminating block, and the rolling assembly is located inside the mounting groove.

[0014] Optionally, the backlash elimination block comprises a first backlash elimination block and a second backlash elimination block connected along the second direction, an end wall of the first backlash elimination block facing away from the second backlash elimination block forms the inclined surface, and a width of the first backlash elimination block along the first direction is greater than a width of the second backlash elimination block along the first direction;

[0015] The accommodating groove includes a backlash elimination block groove, and the backlash elimination block groove includes a first groove portion and a second groove portion, the first groove portion is close to the closed end of the backlash elimination block groove, the end wall of the first groove portion forms the inclined surface, the width of the first groove portion along the first direction is greater than the width of the second groove portion along the first direction, the width of the first groove portion along the first direction is greater than the width of the first backlash elimination block along the first direction, and the width of the second groove portion along the first direction is greater than the width of the second backlash elimination block along the first direction,

[0016] In the installed state, the first backlash eliminating block is located inside the first groove portion, and the second backlash eliminating block is located inside the second groove portion.

[0017] Optionally, the accommodating groove further includes an elastic component groove, the elastic component groove extends along the first direction, the elastic component groove is located at one end of the anti-backlash block groove in the first direction, and the elastic component groove is connected to the wider end of the anti-backlash block groove in the second direction.

[0018] In the installed state, the elastic component is located inside the elastic component groove.

[0019] The present application also provides a seat turntable mechanism, including the aforementioned cross slider mechanism, wherein the inner sliding mechanism of one of the cross slider mechanisms is the outer sliding mechanism of the other cross slider mechanism, and the first directions of the two cross slider mechanisms are perpendicular to each other, wherein the outer sliding mechanism of one of the cross slider mechanisms is a guide groove block, and the inner sliding mechanism is a slider, and the outer sliding mechanism of the other cross slider mechanism is the slider, and the inner sliding mechanism is a guide block.

[0020] The seat turntable mechanism of the present application includes the aforementioned cross slider mechanism, and therefore has the same technical effect as the aforementioned cross slider mechanism, which will not be described in detail here.

[0021] The present application also provides a vehicle, comprising a seat and the aforementioned seat turntable mechanism, wherein the seat is connected to a vehicle floor via the seat turntable mechanism.

[0022] The vehicle of the present application includes the aforementioned seat turntable mechanism, and therefore has the same technical effects as the aforementioned seat turntable mechanism, which will not be described in detail herein. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of a first specific embodiment of the cross slider mechanism in the seat turntable mechanism provided in this application;

[0024] Figure 2 for Figure 1 The split diagram of

[0025] Figure 3 for Figure 1 Force analysis diagram of the anti-backlash block in the cross slide mechanism;

[0026] Figure 4 It is a structural schematic diagram of a second specific embodiment of the cross slider mechanism in the seat turntable mechanism provided in this application;

[0027] Figure 5 It is a partial enlarged view of the third specific embodiment of the cross slider mechanism in the seat turntable mechanism provided by the present application;

[0028] Figure 6 It is a partial enlarged view of the fourth specific embodiment of the cross slider mechanism in the seat turntable mechanism provided by the present application;

[0029] Figure 7 This is a split diagram of the seat turntable mechanism provided in this application;

[0030] in, Figure 1-Figure 7 The reference numerals in the figures are as follows:

[0031] 01-external sliding mechanism; 011-installation hole; 011a-limiting part; b-limiting groove; 012-accommodating groove; c1-clearance block groove; c11-first groove part; c12-second groove part; c2-elastic component groove;

[0032] 02-inner sliding mechanism; 021-protrusion; a-limiting protrusion; 021a-installation groove;

[0033] 03-anti-backlash block; 031-first anti-backlash block; 032-second anti-backlash block;

[0034] 04- Elastic components;

[0035] 05-Rolling parts;

[0036] 06-Scrolling component;

[0037] 1-guide groove block; 2-slider; 3-guide block; 4-core component; 5-moving plate; 6-fixed plate; 7-annular pressure plate; 8-rolling part. DETAILED DESCRIPTION

[0038] In order to enable those skilled in the art to better understand the technical solution of the present application, the present application is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0039] Herein, the end wall of the anti-backlash block 03 close to the closed end of the accommodating groove 012 is called the "inner end wall", and the end wall close to the open end of the accommodating groove 012 is called the "outer end wall".

[0040] Herein, the first direction and the second direction are both for the cross slide mechanism.

[0041] Please refer to Figure 1 and Figure 2 , Figure 1 It is a structural schematic diagram of a first specific embodiment of the cross slider mechanism in the seat turntable mechanism provided in this application; Figure 2 for Figure 1 The split diagram.

[0042] The present embodiment provides a cross slide mechanism, including an outer sliding mechanism 01 and an inner sliding mechanism 02, wherein the inner sliding mechanism 02 is provided with protrusions 021 extending in opposite directions at both ends in a first direction, and the outer sliding mechanism 01 is provided with a mounting hole 011 inside, and the mounting hole 011 has limiting portions 011a extending in opposite directions at both ends in the first direction, and in the installed state, the inner sliding mechanism 02 is located inside the mounting hole 011, and the protrusions 021 are located inside the corresponding limiting portions 011a, and the protrusions 021 can move in the limiting portions 011a along the first direction;

[0043] The outer sliding mechanism 01 is further provided with receiving grooves 012 at both ends in the first direction. The receiving grooves 012 are located on one side of the limiting portion 011a in the second direction. The receiving grooves 012 are connected to the limiting portion 011a.

[0044] It also includes a gap eliminating block 03 and an elastic component 04, both of which are installed inside the accommodating groove 012, the inner end wall of the gap eliminating block 03 and the closed end wall of the accommodating groove 012 are matching inclined surfaces A, the elastic component 04 is located at one end of the first direction of the gap eliminating block 03, the elastic component 04 is in an energy storage state, under the elastic force of the elastic component 04, the inner end wall of the gap eliminating block 03 and the closed end wall of the accommodating groove 012 abut, the outer end wall of the gap eliminating block 03 and the relative side walls of the protrusion 021 directly or indirectly abut, the inclination angle of the inclined surface A is smaller than the self-locking angle, and the first direction and the second direction are perpendicular to each other.

[0045] The cross slider mechanism of the present embodiment is additionally provided with a backlash elimination block 03 and an elastic component 04, and the outer sliding mechanism 01 is additionally provided with a receiving groove 012 for accommodating the backlash elimination block 03 and the elastic component 04, the inner end wall of the backlash elimination block 03 and the closed end wall of the receiving groove 012 are matching inclined surfaces A, and the self-locking characteristics of the wedge block are utilized to specially design the inclination angle of the inclined surface A so that the inclination angle of the inclined surface A is smaller than the self-locking angle, that is, the backlash elimination block 03 meets the self-locking condition and is theoretically not affected by the magnitude of the impact force, so that the inner end wall of the backlash elimination block 03 is always in contact with the closed end wall of the receiving groove 012, and the outer end wall of the backlash elimination block 03 is always in contact with the opposite side wall of the protrusion 021, thereby meeting the gap-free requirements under various working conditions. When the cross slider mechanism is applied to a seat turntable mechanism, the free shaking in the rotation direction when the seat rotates is eliminated, thereby improving the user experience.

[0046] Please refer to Figure 3 , Figure 3 for Figure 1 Force analysis diagram of the anti-backlash block in the cross slide mechanism.

[0047] Depend on Figure 3 It can be seen that in this embodiment, the backlash elimination block 03 is subjected to the following forces:

[0048] N1—positive pressure of the protrusion 021 on the gap-eliminating block 03;

[0049] f1—friction force between the protrusion 021 and the anti-backlash block 03;

[0050] N2—positive pressure of the closed end wall of the receiving groove 012 on the gap elimination block 03;

[0051] f2—friction between the closed end wall of the receiving groove 012 and the anti-backlash block 03;

[0052] α—inclination angle of inclined surface A;

[0053] F1—elastic force of elastic component 04, which is used to make the anti-backlash block 03 keep its inner end wall in contact with the closed end wall of the accommodating groove 012, and its outer end wall in contact with the opposite side wall of the protrusion 021. The F1 value is much smaller than the force on the seat and can be ignored during force analysis.

[0054] When the backlash-eliminating block 03 realizes self-locking, the resultant force of the backlash-eliminating block 03 in the first direction is zero, and the resultant force of the backlash-eliminating block 03 in the second direction is zero, that is:

[0055] N2*sin(α)=f1+f2*cos(α)

[0056] N2*cos(α)=N1-f2*sin(α)

[0057] Assuming that the friction coefficient of each contact pair of parts is the same, the friction coefficient is μ, in the critical sliding state, the friction force is equal to the normal pressure multiplied by the friction coefficient, that is:

[0058] N2*μ=f2

[0059] N1*μ=f1

[0060] Simplifying the self-locking condition:

[0061] α<arctan(2μ / (1-μ2))

[0062] It can be seen that the smaller the friction coefficient, the smaller the self-locking angle. Taking into account different engineering conditions, balancing anti-backlash travel, wear, lubrication and other conditions, after actual testing, α can be adjusted between 3° and 30°.

[0063] Depend on Figure 1 It can be seen that, in this embodiment, the protrusion 021 may include at least one limiting protrusion a, and the limiting portion 011a may include at least one limiting groove b, and the limiting protrusions a are located inside the limiting grooves b in a one-to-one correspondence.

[0064] Please refer to Figure 1 and Figure 4 , Figure 4 It is a structural schematic diagram of a second specific embodiment of the cross slider mechanism in the seat turntable mechanism provided in this application.

[0065] Depend on Figure 1 It can be seen that in the first embodiment, the accommodating grooves 012 at both ends are located on the same side of the second direction of the limiting portion 011a, that is, the two clearance-eliminating blocks 03 are arranged in the same direction; Figure 4 It can be seen that in the second embodiment, the accommodating grooves 012 at both ends are located on different sides of the second direction of the limiting portion 011 a , that is, the two backlash eliminating blocks 03 are arranged in opposite directions.

[0066] It can be understood that no matter the two backlash eliminating blocks 03 are arranged in the same direction or in opposite directions, the backlash eliminating principle does not change and can achieve the same effect.

[0067] Since the anti-backlash block 03 has the self-locking characteristic, the cross slider mechanism is prone to excessive force at startup, that is, startup jamming. This can be alleviated by matching the appropriate α angle. The larger the α angle, the worse the self-locking property of the anti-backlash block 03 and the lower the possibility of startup jamming. At the same time, the following two solutions can also be used to solve the problem of startup jamming.

[0068] Please refer to Figure 5 , Figure 5 This is a partially enlarged view of the third specific embodiment of the cross slider mechanism in the seat turntable mechanism provided in this application.

[0069] In this embodiment, the outer end wall of the clearance eliminating block 03 is provided with one or more recessed parts, and the multiple recessed parts are distributed along the first direction, and also includes one or more rolling elements 05, and the rolling elements 05 are partially movably installed inside the corresponding recessed parts.

[0070] As configured above, the rolling element 05 can only perform limited micro-rolling motion in the recessed portion, and the micro-stroke rolling that can be generated during startup effectively reduces the problem of excessive static friction coefficient during startup and reduces the possibility of startup jamming.

[0071] The rolling element 05 may be a roller, and the recessed portion may be an arc-shaped roller groove.

[0072] Please refer to Figure 6 , Figure 6 This is a partially enlarged view of the third specific embodiment of the cross slider mechanism in the seat turntable mechanism provided in this application.

[0073] In this embodiment, a mounting groove 021a is provided on the side wall of the protrusion 021 facing the gap elimination block 03, the rolling assembly 06 is located inside the mounting groove 021a, and the outer end wall of the gap elimination block 03 and the opposite side wall of the protrusion 021 are in rolling contact through the rolling assembly 06.

[0074] As configured above, not only at startup, but also during the entire movement of the inner sliding mechanism 02, the rolling component 06 will move with the inner sliding mechanism 02 and produce pure rolling, so that the sliding friction between the anti-backlash block 03 and the protrusion 021 is converted into rolling friction, thereby reducing the movement resistance of the inner sliding mechanism 02 and improving the sliding smoothness of the inner sliding mechanism 02.

[0075] In this embodiment, the rolling assembly 06 includes a plurality of rollers, and the plurality of rollers are connected together via a roller cage to form the roller assembly 06 in a group.

[0076] In general, compared with the second embodiment, the advantage of the third embodiment is that the rolling friction is stable and the rolling friction can be used during the movement of the inner sliding mechanism 02 to reduce the movement resistance of the inner sliding mechanism 02, while the second embodiment can only reduce the friction during startup; but the second embodiment does not need to add a roller assembly 06, but instead uses part features (recessed portions) to constrain the rollers, saving space and reducing the complexity of the parts.

[0077] Please continue to refer to Figure 3 , Figure 5 and Figure 6 In some embodiments of the present application, the backlash eliminating block 03 includes a first backlash eliminating block 031 and a second backlash eliminating block 032 connected along the second direction, an end wall of the first backlash eliminating block 031 facing away from the second backlash eliminating block 032 forms an inclined surface A, and a width of the first backlash eliminating block 031 along the first direction is greater than a width of the second backlash eliminating block 032 along the first direction;

[0078] The accommodating groove 012 includes a backlash eliminating block groove c1, and the backlash eliminating block groove c1 includes a first groove portion c11 and a second groove portion c12. The first groove portion c11 is close to the closed end of the backlash eliminating block groove c1, and the end wall of the first groove portion c11 forms an inclined surface A. The width of the first groove portion c11 along the first direction is greater than the width of the second groove portion c12 along the first direction. The width of the first groove portion c11 along the first direction is greater than the width of the first backlash eliminating block 031 along the first direction. The width of the second groove portion c12 along the first direction is greater than the width of the second backlash eliminating block 032 along the first direction.

[0079] In the installed state, the first backlash eliminating block 031 is located inside the first groove portion c11, and the second backlash eliminating block 032 is located inside the second groove portion c12.

[0080] It can be understood that, in practice, the structure of the gap-eliminating block 03 and the gap-eliminating block groove c1 is not limited to the above-mentioned embodiment. For example, it is also feasible that the width of the gap-eliminating block 03 and the gap-eliminating block groove c1 along the first direction remains unchanged, and the above-mentioned gap-eliminating effect can also be achieved. Of course, in the arrangement of this embodiment, the width of the opening end of the gap-eliminating block groove c1 is reduced, which can reduce the size of the gap-eliminating block groove c1, reduce the influence of the gap-eliminating block groove c1 on the structural strength of the outer sliding mechanism 01, and ensure the structural reliability of the outer sliding mechanism 01.

[0081] Please continue to refer to Figure 3 , Figure 5 and Figure 6 The accommodating groove 012 also includes an elastic component groove c2, which extends along the first direction. The elastic component groove c2 is located at one end of the first direction of the anti-backlash block groove c1, and the elastic component groove c2 is connected to the wider end of the second direction of the anti-backlash block groove c1; in the installed state, the elastic component 04 is located inside the elastic component groove c2.

[0082] As configured above, the elastic component groove c2 serves to accommodate the elastic component 04. In practice, the elastic component groove c2 and the elastic component 04 can be clearance-matched, and at this time, the elastic component groove c2 can also serve as a guide and limit for the elastic component 04, so that the elastic component 04 can only be extended and retracted along the axial direction, thereby reducing the possibility of other deformations of the elastic component 04 except for the axial extension and retraction.

[0083] In this embodiment, the elastic component 04 is a coil spring. In practice, it is also feasible that the elastic component 04 is a rubber spring.

[0084] In this embodiment, the wider end of the second direction of the elastic component groove c2 and the gap eliminating block groove c1 is connected, and the elastic component 04 is compressed to store energy. At this time, it is feasible whether the elastic component 04 and the closed end wall of the elastic component groove c2, and the elastic component 04 and the end wall of the first gap eliminating block 031 facing the elastic component groove c2 are connected.

[0085] In practice, it is also feasible to connect the narrower end of the second direction of the elastic component groove c2 and the gap elimination block groove c1. At this time, the elastic component 04 is stretched to store energy, and the closed end wall of the elastic component 04 and the elastic component groove c2, and the end wall of the elastic component 04 and the first gap elimination block 031 facing the elastic component groove c2 all need to be connected to each other. The elastic component 04 can also be an elastic rope.

[0086] Please refer to Figure 2 and Figure 7 , Figure 7 This is a split diagram of the seat turntable mechanism provided in this application.

[0087] The present application also provides a seat turntable mechanism, including two aforementioned cross slider mechanisms, wherein the inner sliding mechanism 02 of one cross slider mechanism is the outer sliding mechanism 01 of the other cross slider mechanism, the first directions of the two cross slider mechanisms are perpendicular to each other, the outer sliding mechanism 01 of one cross slider mechanism is a guide groove block 1, and the inner sliding mechanism 02 is a slider 2, the outer sliding mechanism 01 of the other cross slider mechanism is a slider 2, and the inner sliding mechanism 02 is a guide block 3, and the guide block 3 is connected to the core component 4.

[0088] The seat turntable mechanism of the present application includes two aforementioned cross slider mechanisms, and therefore has the same technical effects as the aforementioned cross slider mechanisms, which will not be described in detail herein.

[0089] Depend on Figure 4 It can be seen that in this embodiment, in the two cross-slider mechanisms, the receiving grooves 012 at both ends are located on different sides of the second direction of the limiting portion 011 a.

[0090] In practice, the receiving grooves 012 at both ends of one cross slider mechanism are located on different sides of the second direction of the limiting portion 011a, and the receiving grooves 012 at both ends of the other cross slider mechanism are located on the same side of the second direction of the limiting portion 011a.

[0091] like Figure 7 As shown, the seat turntable mechanism of this embodiment also includes a moving plate 5, a fixed plate 6 and an annular pressure plate 7. The outer edge of the annular pressure plate 7 is fixedly connected to the fixed plate 6. An annular limiting space is formed between the annular pressure plate 7 and the fixed plate 6. The outer edge of the moving plate 5 is located in the limiting space. It also includes a rolling portion 8. The rolling portion 8 is located between the moving plate 5 and the fixed plate 6, and between the annular pressure plate 7 and the moving plate 5. The annular pressure plate 7 and the fixed plate 6 apply a clamping force to the moving plate 5 through the rolling portion 8, thereby realizing axial gap-free assembly of the moving plate 5. The guide groove block 1 is connected to the fixed plate 6.

[0092] The present application also provides a vehicle, including a seat and the aforementioned seat turntable mechanism, wherein the seat is connected to a vehicle floor via the seat turntable mechanism.

[0093] The vehicle of the present application includes the aforementioned seat turntable mechanism, and therefore has the same technical effects as the aforementioned seat turntable mechanism, which will not be described in detail here.

[0094] The above are only preferred implementations of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A cross slide mechanism, characterized in that: The invention comprises an outer sliding mechanism (01) and an inner sliding mechanism (02), wherein the inner sliding mechanism (02) is provided with protruding portions (021) extending in opposite directions at two ends in a first direction, and a mounting hole (011) is provided inside the outer sliding mechanism (01), and the mounting hole (011) has limiting portions (011a) extending in opposite directions at two ends in the first direction, and in a mounted state, the inner sliding mechanism (02) is at least partially located inside the mounting hole (011), and the protruding portion (021) is at least partially located inside the corresponding limiting portion (011a), and the protruding portion (021) can move inside the limiting portion (011a) along the first direction; The outer sliding mechanism (01) is further provided with receiving grooves (012) at both ends in the first direction, the receiving groove (012) is located on one side of the limiting portion (011a) in the second direction, and the receiving groove (012) is connected to the limiting portion (011a); It also includes a backlash elimination block (03) and an elastic component (04), wherein the backlash elimination block (03) and the elastic component (04) are both installed inside the receiving groove (012), the inner end wall of the backlash elimination block (03) and the closed end wall of the receiving groove (012) are matching inclined surfaces (A), the elastic component (04) is located at one end of the first direction of the backlash elimination block (03), the elastic component (04) is in an energy storage state, and under the elastic force of the elastic component (04), the inner end wall of the backlash elimination block (03) and the closed end wall of the receiving groove (012) are in contact with each other, the outer end wall of the backlash elimination block (03) and the opposite side wall of the protruding portion (021) are in direct or indirect contact with each other, the inclination angle of the inclined surface (A) is smaller than the self-locking angle, and the first direction and the second direction are perpendicular to each other.

2. The cross slide mechanism according to claim 1, characterized in that: The inclination angle of the inclined surface (A) is α, and the value range of α is 3°~30°.

3. The cross slide mechanism according to claim 1, characterized in that: The accommodating grooves (012) at both ends are located on the same side of the limiting portion (011a) in the second direction; Alternatively, the accommodating grooves (012) at both ends are located on different sides of the second direction of the limiting portion (011a).

4. The cross slide mechanism according to any one of claims 1 to 3, characterized in that: The outer end wall of the clearance eliminating block (03) is provided with one or more recessed parts, the plurality of recessed parts are distributed along a first direction, and further comprises one or more rolling elements (05), wherein the rolling elements (05) are partially movably mounted inside corresponding recessed parts.

5. The cross slide mechanism according to any one of claims 1 to 3, characterized in that: It also includes a rolling assembly (06), through which the outer end wall of the anti-backlash block (03) and the opposite side wall of the protruding portion (021) are in rolling contact.

6. The cross slide mechanism according to claim 5, characterized in that: A mounting groove (021a) is provided on the side wall of the raised portion (021) facing the clearance-eliminating block (03), and the rolling assembly (06) is located inside the mounting groove (021a).

7. The cross slide mechanism according to any one of claims 1 to 3, characterized in that: The backlash eliminating block (03) comprises a first backlash eliminating block (031) and a second backlash eliminating block (032) connected along the second direction, the end wall of the first backlash eliminating block (031) facing away from the second backlash eliminating block (032) forms the inclined surface (A), and the width of the first backlash eliminating block (031) along the first direction is greater than the width of the second backlash eliminating block (032) along the first direction; The accommodating groove (012) comprises a backlash-eliminating block groove (c1), the backlash-eliminating block groove (c1) comprises a first groove portion (c11) and a second groove portion (c12), the first groove portion (c11) is close to the closed end of the backlash-eliminating block groove (c1), the end wall of the first groove portion (c11) forms the inclined surface (A), the width of the first groove portion (c11) along the first direction is greater than the width of the second groove portion (c12) along the first direction, the width of the first groove portion (c11) along the first direction is greater than the width of the first backlash-eliminating block (031) along the first direction, the width of the second groove portion (c12) along the first direction is greater than the width of the second backlash-eliminating block (032) along the first direction, In the installed state, the first backlash eliminating block (031) is located inside the first groove portion (c11), and the second backlash eliminating block (032) is located inside the second groove portion (c12).

8. The cross slide mechanism according to claim 7, characterized in that: The accommodating groove (012) further comprises an elastic component groove (c2), the elastic component groove (c2) extending along a first direction, the elastic component groove (c2) being located at one end of the anti-backlash block groove (c1) in the first direction, and the elastic component groove (c2) being connected to an end of the anti-backlash block groove (c1) which is wider in the second direction. In the installed state, the elastic component (04) is located inside the elastic component groove (c2).

9. A seat turntable mechanism, characterized in that: It comprises two cross slider mechanisms according to any one of claims 1 to 8, wherein the inner sliding mechanism (02) of one of the cross slider mechanisms is the outer sliding mechanism (01) of the other cross slider mechanism, the first directions of the two cross slider mechanisms are perpendicular to each other, the outer sliding mechanism (01) of one of the cross slider mechanisms is a guide groove block (1), and the inner sliding mechanism (02) is a slider (2), and the outer sliding mechanism (01) of the other cross slider mechanism is the slider (2), and the inner sliding mechanism (02) is a guide block (3).

10. A vehicle comprising a seat, characterized in that: It also includes the seat turntable mechanism of claim 9, wherein the seat is connected to the vehicle floor through the seat turntable mechanism.

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