A structure for eliminating Z-direction clearance of a rotating mechanism

Abstract

The present invention belongs to the technical field of seat rotating mechanism, and specifically relates to a structure for eliminating Z-direction clearance of a rotating mechanism; wherein curved slide grooves are provided at the four corners of a turntable, welded reinforcing washers are welded on the top and bottom of the turntable, a connecting bracket is fixed on a fixed plate, the bottom of a guide pin shaft is fitted in the connecting bracket, the top of the guide pin shaft is sleeved in the curved slide groove, and the outside of the guide pin shaft above the turntable is sleeved with plastic washers and metal washers in sequence from bottom to top, and the outside of the guide pin shaft below the turntable is sleeved with plastic washers and metal washers in sequence from top to bottom, and a compression spring is provided on the outer sleeve of the guide pin shaft between the metal washer below the turntable and the connecting bracket; the present invention is beneficial to improving the functional robustness of a dual electric slide rail mechanism of a rotating seat, and can be used as a solution for eliminating Z-direction clearance of a rotating mechanism.

Description

Technical Field

[0001] The invention belongs to the technical field of seat rotating mechanisms, and in particular relates to a structure for eliminating Z-direction clearance in a rotating mechanism. Background Art

[0002] The existing seat rotation mechanisms driven by the relative displacement of dual electric slide rails are unable to overcome the functional hazard of failure of movement caused by the Z-direction height deviation of the slide rails on both sides. Currently, there is no solution for eliminating the Z-direction gap in the rotation mechanism, resulting in the dual electric slide rail mechanism of the existing rotating seat being unstable and posing a safety hazard. Summary of the invention

[0003] In order to overcome the above problems, the present invention provides a structure for eliminating Z-direction gaps in a rotating mechanism, which is beneficial to improving the functional robustness of the dual electric slide rail mechanism of a rotating seat and can serve as a solution for eliminating Z-direction gaps in a rotating mechanism.

[0004] A structure for eliminating Z-direction clearance of a rotating mechanism, comprising a guide pin shaft 1, a metal washer 2, a plastic washer 3, a welding reinforcement washer 4, a turntable 5, a compression spring 6, a connecting bracket 7, and a fixing plate 8; wherein the four corners of the turntable 5 are respectively provided with curved slide grooves 51, the top and bottom of the turntable 5 at the curved slide grooves 51 are respectively welded with welding reinforcement washers 4, the connecting bracket 7 is fixed on the fixing plate 8, the bottom of the guide pin shaft 1 is matched and connected in the connecting bracket 7 between the connecting bracket 7 and the fixing plate 8, and the top of the guide pin shaft 1 is provided with a curved slide groove 51. The outside is sleeved in the curved slide groove 51 of the turntable 5, and the outside of the guide pin shaft 1 above the turntable 5 is sleeved with a plastic washer 3 and a metal washer 2 in sequence from bottom to top, and the turntable 5 with a welded reinforcing washer 4, the plastic washer 3, the metal washer 2 and the guide pin shaft 1 are fastened by installing the nut 9. The outside of the guide pin shaft 1 below the turntable 5 is sleeved with a plastic washer 3 and a metal washer 2 in sequence from top to bottom, and a compression spring 6 is sleeved on the outside of the guide pin shaft 1 between the metal washer 2 below the turntable 5 and the connecting bracket 7.

[0005] The turntable 5 is welded to the welding reinforcement washers 4 at the upper and lower ends to form an assembly, and the guide pin shaft 1 is placed in the curved sliding groove 51 through the shaft sleeve 10.

[0006] The welding reinforcement washer 4 is provided with a slide groove corresponding to the curved slide groove 51 .

[0007] The inner diameter of the compression spring 6 is larger than the diameter of the outer matching surface of the guide pin shaft 1 .

[0008] The free height of the compression spring 6 is greater than the maximum distance between the connecting bracket 7 and the metal washer 2 below the turntable 5 . When the compression spring 6 is at the maximum compression amount, the height of the compression spring 6 is less than the minimum distance between the connecting bracket 7 and the metal washer 2 below the turntable 5 .

[0009] The guide pin shaft 1 has a step surface at the bottom, which is arranged between the connecting bracket 7 and the fixing plate 8 , and the area of ​​the cross section at the bottom of the step surface is larger than the diameter of the center hole on the connecting bracket 7 .

[0010] There are gaps between the top of the step surface on the guide pin shaft 1 and the connecting bracket 7, and between the bottom of the step surface and the fixing plate 8, and the sum of the gap heights is greater than the sum of the Z-direction height deviations of the two slide rails.

[0011] The step surface at the bottom of the guide pin shaft 1 is dipped in a rubber coating.

[0012] Beneficial effects of the present invention:

[0013] The structure for eliminating Z-direction gap of a rotating mechanism provided by the present invention is beneficial to improving the functional robustness of the dual electric slide rail mechanism, can be used as a solution for eliminating Z-direction gap of a rotating mechanism, and improves the reliability of a dual electric slide rail relative displacement driving seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings used in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without creative work.

[0015] Figure 1 It is a partial structural schematic diagram of the present invention.

[0016] Figure 2 It is a schematic diagram of a partial decomposition structure of the present invention.

[0017] Figure 3 It is a partial structural cross-sectional schematic diagram of the present invention.

[0018] Figure 4 This is a usage state diagram of the present invention.

[0019] Among them: guide pin shaft 1, metal washer 2, plastic washer 3, welding reinforcement washer 4, turntable 5, curved slide 51, compression spring 6, connecting bracket 7, fixing plate 8, mounting nut 9, shaft sleeve 10, mounting bolt 11. DETAILED DESCRIPTION

[0020] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0021] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0022] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0023] In the description of this embodiment, the terms "upper", "lower", "left", "right" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operate in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0024] Example 1

[0025] like Figure 1-3As shown, a structure for eliminating Z-direction clearance of a rotating mechanism comprises a guide pin shaft 1, a metal washer 2, a plastic washer 3, a welding reinforcement washer 4, a turntable 5, a compression spring 6, a connecting bracket 7, and a fixing plate 8; wherein the four corners of the turntable 5 are respectively provided with curved slide grooves 51, the top and bottom of the turntable 5 at the curved slide grooves 51 are respectively welded with welding reinforcement washers 4, the connecting bracket 7 is fixed to the fixing plate 8 by mounting bolts 11, the bottom of the guide pin shaft 1 is matched and connected in the connecting bracket 7 between the connecting bracket 7 and the fixing plate 8, and the guide pin shaft 1 is fixed to the fixing plate 8 by mounting bolts 11. The outer part of the guide pin shaft 1 above the turntable 5 is sleeved in the curved slide groove 51 of the turntable 5, and the outer part of the guide pin shaft 1 above the turntable 5 is sleeved with a plastic washer 3 and a metal washer 2 in sequence from bottom to top, and the turntable 5 with a welded reinforcing washer 4, the plastic washer 3, the metal washer 2 and the guide pin shaft 1 are fastened by installing the nut 9, and the outer part of the guide pin shaft 1 below the turntable 5 is sleeved with a plastic washer 3 and a metal washer 2 in sequence from top to bottom, and a compression spring 6 is sleeved on the outer part of the guide pin shaft 1 between the metal washer 2 below the turntable 5 and the connecting bracket 7.

[0026] The turntable 5 is welded to the welding reinforcement washers 4 at the upper and lower ends to form an assembly, and the guide pin shaft 1 is placed in the curved sliding groove 51 through the shaft sleeve 10.

[0027] The welding reinforcement washer 4 is provided with a slide groove corresponding to the curved slide groove 51 .

[0028] The inner diameter of the compression spring 6 is larger than the diameter of the outer matching surface of the guide pin shaft 1 .

[0029] The free height of the compression spring 6 is greater than the maximum distance between the connecting bracket 7 and the metal washer 2 below the turntable 5 . When the compression spring 6 is at the maximum compression amount, the height of the compression spring 6 is less than the minimum distance between the connecting bracket 7 and the metal washer 2 below the turntable 5 .

[0030] The guide pin shaft 1 has a step surface at the bottom, which is arranged between the connecting bracket 7 and the fixing plate 8 , and the area of ​​the cross section at the bottom of the step surface is larger than the diameter of the center hole on the connecting bracket 7 .

[0031] There are gaps between the top of the step surface on the guide pin shaft 1 and the connecting bracket 7, and between the bottom of the step surface and the fixing plate 8, and the sum of the gap heights is greater than the sum of the Z-direction height deviations of the two slide rails.

[0032] The step surface at the bottom of the guide pin shaft 1 is dipped in a rubber coating.

[0033] like Figure 4As shown, when in use, the fixing plates 8 at the bottom of the four corners of the turntable 5 are respectively fixed to the upper rails of the seat slide rails, that is, two sets of fixing plates 8 are fixed to the seat slide rails on one side, and the other two sets of fixing plates 8 are fixed to the seat slide rails on the other side; so that the fixing plates 8 can slide on the lower rails of the seat slide rails along with the upper rails, the lower rails of the seat slide rails are fixed to the floor inside the vehicle, and the seat cushion frame is fixed to the turntable 5 through the connecting bracket. The double-sided rails of the seat slide rails respectively drive the guide pin shafts 1 at both ends to move forward and backward, so that the guide pin shafts 1 slide in the curved slide groove 51, thereby driving the turntable 5 to rotate, thereby driving the entire seat to rotate.

[0034] Example 2

[0035] The plastic washer 3 is arranged between the metal washer 2 and the welding reinforcement washer 4 and is designed with wear-resistant materials such as POM to reduce the sliding friction of the guide pin shaft 1 in the curved slide groove 51 of the turntable 5.

[0036] The metal washer 2 is used to increase the stress-bearing area of ​​the plastic washer 3 to prevent the plastic washer 3 from being deformed and damaged due to excessive stress or the sharp edge of the end of the compression spring 6 from locally damaging the plastic washer 3;

[0037] The compression spring 6 is arranged between the connecting bracket 7 and the metal washer 3 below the turntable 5, and is mounted around the guide pin shaft 1 to achieve positioning and assembly of the compression spring 6;

[0038] The inner diameter of the compression spring 6 needs to be slightly larger than the matching diameter of the guide pin shaft 1 to ensure installation. The free height of the compression spring 6 needs to be larger than the maximum distance between the connecting bracket 7 and the metal washer 3 below the turntable 5. When the compression spring 6 is at its maximum compression, the height of the compression spring 6 needs to be smaller than the minimum distance between the connecting bracket 7 and the metal washer 3 below the turntable 5.

[0039] The working limit load of the compression spring 6 must be greater than the sum of the weight of the entire chair and the weight of the 95th percentile male dummy to meet the functional requirements of the compression spring 6;

[0040] The compression spring 6 can eliminate the problem of inconsistent Z-direction heights of the left and right slide rails caused by manufacturing and assembly tolerances of the floor and the slide rails. Inconsistent Z-direction heights of the two-side slide rails will cause the guide pin shaft 1 to shake, make noise, or even get stuck in the curved slide groove of the turntable 5 when the turntable 5 rotates;

[0041] The step surface at the end of the guide pin shaft 1 is arranged between the connecting bracket 7 and the fixing plate 8, and the cross-sectional area of ​​the step surface is larger than the opening size of the connecting bracket 7 to prevent the guide pin shaft from falling out of the connecting bracket;

[0042] There is a gap between the step surface at the end of the guide pin shaft 1 and the connecting bracket 7 and the fixing plate 8, and the total gap must be greater than the total Z-direction height deviation of the two slide rails to offset the Z-direction deviation of the two slide rails;

[0043] The step surface at the end of the guide pin shaft 1 is dipped in a rubber coating to prevent the step surface of the guide pin shaft 1 from colliding with the connecting bracket 7 and the fixing plate 8 to produce abnormal noise.

[0044] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings. However, the protection scope of the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention. These simple variations all belong to the protection scope of the present invention.

[0045] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations.

[0046] In addition, various embodiments of the present invention may be arbitrarily combined, and as long as they do not violate the concept of the present invention, they should also be regarded as the contents disclosed by the present invention.

Claims

1. A structure for eliminating Z-direction clearance of a rotating mechanism, characterized in that The invention comprises a guide pin shaft (1), a metal washer (2), a plastic washer (3), a welded reinforcement washer (4), a turntable (5), a compression spring (6), a connecting bracket (7), and a fixing plate (8); wherein the four corners of the turntable (5) are respectively provided with curved slide grooves (51); the top and bottom of the turntable (5) at the curved slide grooves (51) are respectively welded with welded reinforcement washers (4); the connecting bracket (7) is fixed on the fixing plate (8); the bottom of the guide pin shaft (1) is matched and connected in the connecting bracket (7) between the connecting bracket (7) and the fixing plate (8); the upper outer portion of the guide pin shaft (1) is sleeved on the turntable (5); The guide pin (1) above the turntable (5) is provided with a plastic washer (3) and a metal washer (2) in sequence from bottom to top, and the turntable (5) with a welded reinforcing washer (4), the plastic washer (3), the metal washer (2) and the guide pin (1) are fastened by installing a nut (9), the guide pin (1) below the turntable (5) is provided with a plastic washer (3) and a metal washer (2) in sequence from top to bottom, and a compression spring (6) is provided on the guide pin (1) between the metal washer (2) below the turntable (5) and the connecting bracket (7); The rotating disk (5) is welded to the welding reinforcement washers (4) at the upper and lower ends to form an assembly, and the guide pin shaft (1) is placed in the curved slide groove (51) through the shaft sleeve (10); The welding reinforcement washer (4) is provided with a slide groove corresponding to the curved slide groove (51); The inner diameter of the compression spring (6) is larger than the diameter of the outer mating surface of the guide pin shaft (1); The free height of the compression spring (6) is greater than the maximum distance between the connecting bracket (7) and the metal washer (2) below the turntable (5); when the compression spring (6) is at its maximum compression, the height of the compression spring (6) is less than the minimum distance between the connecting bracket (7) and the metal washer (2) below the turntable (5); The guide pin shaft (1) has a stepped surface at the bottom, the stepped surface is arranged between the connecting bracket (7) and the fixing plate (8), and the area of ​​the cross section at the bottom of the stepped surface is larger than the diameter of the center hole on the connecting bracket (7); There is a gap between the top of the step surface on the guide pin shaft (1) and the connecting bracket (7), and between the bottom of the step surface and the fixing plate (8), and the sum of the gap heights is greater than the sum of the Z-direction height deviations of the two slide rails; The step surface at the bottom of the guide pin shaft (1) is coated with a plastic-coated rubber coating; The plastic gasket (3) is made of POM material.

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