WO2023046052A1

WO2023046052A1 - Structure for improving rear impact strength of swivel seat mechanism

Info

Publication number: WO2023046052A1
Application number: PCT/CN2022/120783
Authority: WO
Inventors: 胡海拉; 杨有为; 乔同舟; 倪洪斌
Original assignee: 恺博(常熟)座椅机械部件有限公司
Priority date: 2021-09-27
Filing date: 2022-09-23
Publication date: 2023-03-30
Also published as: CN113679195A

Abstract

A structure for improving the rear impact strength of a swivel seat mechanism, comprising a connecting wall plate (1), a first sliding rail assembly (2), and a second sliding rail assembly (3). The connecting wall plate (1) is rotatably connected to the first sliding rail assembly (2) and the second sliding rail assembly (3) around a first connecting structure (4) by means of the first connecting structure (4), a second connecting structure (5), a third connecting structure (6), and a fourth connecting structure (7). Portions connecting the first connecting structure (4), the second connecting structure (5), the third connecting structure (6), and the fourth connecting structure (7) to the connecting wall plate (1) are distributed at four corners of the connecting wall plate (1) and are arranged anticlockwise. The first connecting structure (4) and the second connecting structure (5) are connected between the connecting wall plate (1) and the first sliding rail assembly (2). The third connecting structure (6) and the fourth connecting structure (7) are connected between the connecting wall plate (1) and the second sliding rail assembly (3). A portion connecting the first connecting structure (4) to the connecting wall plate (1) is located directly above the first sliding rail assembly (2). According to the structure for improving the rear impact strength of the swivel seat mechanism, the strength and rigidity of the mechanism are improved, and the assembly complexity is low.

Description

Structure for improving the rear impact strength of the swivel seat mechanism

technical field

The invention relates to the field of swivel seats, in particular to a structure for improving the rear impact strength of a swivel seat mechanism.

Background technique

Limited by the traditional seat frame system, the existing frame brackets are arranged at the four corners of the rotating mechanism. At the same time, in order to meet the rotation function, the position of the key hinge point will be far away from the skeleton support, where a cantilever beam structure will be formed, and the cantilever is large, which directly reduces the strength and rigidity of the whole chair.

In addition, in the existing scheme of the seat rotation mechanism, in order to bear the radial load with the bushing at the rotary hinge, a large-area circular lubricating gasket is used to bear the axial load, but the positioning of the gasket is difficult, and the gasket is easily damaged during the assembly process. pieces, resulting in extremely low assembly efficiency.

Please refer to Fig. 1, an existing skeleton support, because the conventional 4 skeleton supports are on the 4 opposite corners of the turntable, the skeleton support includes a first support 1, a second support 2, a third support 3 and a fourth support 4 , so there will be a situation where there is a large cantilever from the hinge at the circled position to the first bracket 1 .

Contents of the invention

In view of the deficiencies in the above-mentioned prior art, the present invention provides a structure for improving the rear impact strength of the rotating seat mechanism, which improves the strength and rigidity of the mechanism, and has low assembly complexity.

In order to achieve the above object, the present invention provides a structure for improving the rear impact strength of a rotating seat mechanism, which includes a connecting wall plate, a first slide rail assembly and a second slide rail assembly; the connecting wall plate passes through a first The connection structure, a second connection structure, a third connection structure and a fourth connection structure are rotatably connected to the first slide rail assembly and the second slide rail assembly around the first connection structure; The connecting parts of the first connecting structure, the second connecting structure, the third connecting structure and the fourth connecting structure and the connecting wall board are distributed in the four corners of the connecting wall board and arranged counterclockwise , the first connection structure and the second connection structure are connected between the connection wall plate and the first slide rail assembly, and the third connection structure and the fourth connection structure are connected to the connection between the wall plate and the second slide rail assembly; the connection part between the first connection structure and the connecting wall plate is located directly above the first slide rail assembly; the third connection structure is connected to the The connecting part of the wall board is located directly above the second slide rail assembly.

Preferably, the first connecting structure includes a first boss, a first step bolt and a first connecting bracket; the connecting wall plate forms the first boss downwards, and the middle part of the first boss A first connection hole is formed; a second boss is formed upward on the first connection bracket, and a first screw hole is formed in the middle of the second boss; the first stepped bolt passes through the first boss from top to bottom A connection hole is screwed to the first screw hole; the first connection bracket is fixed on the first slide rail assembly.

Preferably, the second connecting structure includes a third boss, a first stepped nut, a second stepped bolt and a second connecting bracket; the connecting wall plate forms the third boss downwards, so A second connection hole is formed in the middle of the third boss; a first arc-shaped through groove is formed in the second connection bracket; the second connection bracket is fixed on the first slide rail assembly; the second step Bolts pass through the first arc-shaped slot and the second connecting hole from bottom to top, and the first stepped nut is screwed to the top of the second stepped bolt.

Preferably, the third connecting structure includes a second arc-shaped through groove, a second stepped nut, a gasket, a plastic spacer, an outer hex nut, a third connecting bracket, a third stepped bolt, A fourth connecting bracket, a fourth boss and a fourth stepped bolt; the connecting wall plate forms the second arc-shaped through groove; the third connecting bracket is arc-shaped and one end forms a third connecting hole , the other end of the third connection bracket forms a second screw hole; the third step bolt is connected to the fourth connection bracket, and the fourth connection bracket is fixed on the second slide rail assembly; The third stepped bolts are sequentially passed through the third connection hole, the outer hexagon nut, the plastic spacer, the second arc-shaped through groove and the gasket from bottom to top; The second step nut is screwed to the top of the third step bolt; the connecting wall plate forms the fourth boss downward beside the second arc-shaped channel; the middle part of the fourth boss forms a A fourth connecting hole; the fourth stepped bolt passes through the fourth connecting hole from top to bottom and is screwed with the second screw hole.

Preferably, the fourth connecting structure includes a fifth boss, a third stepped nut, a fifth stepped bolt and a fifth connecting bracket; the connecting wall plate forms the fifth boss downwards, so A fifth connection hole is formed in the middle of the fifth boss; the fifth connection bracket is fixed on the second slide rail assembly and forms a third arc-shaped through groove; the fifth step bolt passes through from bottom to top through the third arc-shaped slot and the fifth connecting hole; the third stepped nut is screwed to the top of the fifth stepped bolt.

Preferably, the first connecting structure further includes a first bushing, the first bushing is sleeved outside the first stepped bolt and placed between the first stepped bolt and the first connecting hole. between.

Preferably, the second connecting structure further includes a second bushing, the second bushing is sleeved outside the second stepped bolt and placed between the second stepped bolt and the second connecting hole. between.

Preferably, the third connecting structure further includes a third bushing and a fourth bushing; the third bushing is set outside the third stepped bolt and pads between the third stepped bolt and the third bushing. between the third connecting holes; the fourth bushing is sleeved outside the fourth stepped bolt and placed between the fourth stepped bolt and the fourth connecting hole.

Preferably, the fourth connecting structure further includes a fifth bushing; the fifth bushing is sleeved outside the fifth stepped bolt and padded between the fifth stepped bolt and the fifth connecting hole. between.

Preferably, the connecting wall plate can move between the spacer and the upper and lower limiting interlayers of the plastic spacer, and the moving track of the connecting wall plate is the track of the second arc-shaped slot.

Preferably, the plastic spacer is fitted between the connecting wall plate and the outer hex nut, and the plastic spacer supports the connecting wall plate and restricts the connecting wall plate from collapsing.

Preferably, the second stepped nut and the third stepped bolt are pre-tightened to limit the warpage of the connecting wall plate, thereby improving the strength and rigidity of the system.

Preferably, the connecting portion between the third connecting structure and the connecting wall plate is located directly above the second slide rail assembly, and no matter how the connecting wall plate moves, the third connecting structure always supports the connection The grooved curve of the wall plate is used as upper and lower limit support, thereby reducing the length of the cantilever and improving the strength and rigidity of the mechanism.

Preferably, the first bushing, the second bushing, the fourth bushing and the fifth bushing are fixed on the connecting wall plate through a riveting process; the third bushing is fixed by The pressure riveting process is fixed on the third connecting bracket.

Preferably, said first bushing, said second bushing, said third bushing, said fourth bushing and said fifth bushing comprise a top surface, an annular side wall and a functional surface The top of the annular side wall extends outward to form the top surface; the bottom of the annular side wall extends outward to form the functional surface; the functional surface includes a plurality of petals, and the petals are radial connected to the bottom of the annular side wall.

Preferably, surfaces of the first bush, the second bush, the third bush, the fourth bush and the fifth bush are coated with a lubricating coating.

Preferably, the plastic spacer is made of wear-resistant POM material; the plastic spacer forms a cavity, and the cavity is matched with the outer hex nut, and the outer hex nut is accommodated in the cavity.

Preferably, the connecting wall plate sinks in the second arc-shaped slot and the peripheral part of the second arc-shaped slot; the top surface of the second stepped nut is lower than the upper surface of the connecting wall plate surface.

The present invention has the following beneficial effects due to the adoption of the above technical scheme:

The first bushing, the second bushing, the fourth bushing and the fifth bushing are fixed on the connecting panel through the riveting process; the third bushing is fixed on the third connecting bracket through the riveting process; so that there is no need for assembly The bushing is repositioned to improve the efficiency of assembly. The functional surface of the bushing includes multiple radially arranged petals. The functional surface is petal-shaped to bear the axial load of the system. The length of the petal-shaped petals is convenient for processing, which can make the area of the functional surface large enough and reduce the support At the same time, the intermittent shape of the petals is also convenient for storing grease. At the same time, the surface of the bushing has a lubricating coating, which can reduce the friction coefficient between the functional surface and the supporting surface and increase the durability.

Description of drawings

Fig. 1 is the structural representation of existing existing frame support;

Fig. 2 is a structural schematic diagram of a structure for improving the rear impact strength of a rotating seat mechanism according to an embodiment of the present invention;

Fig. 3 is an exploded view of the structure for improving the rear impact strength of the rotating seat mechanism according to the embodiment of the present invention;

Fig. 4 is an exploded view of the first connection structure of the embodiment of the present invention;

5 is a cross-sectional view of a first connection structure according to an embodiment of the present invention;

FIG. 6 is an exploded view of a third connection structure according to an embodiment of the present invention;

7 is a cross-sectional view of a third connection structure according to an embodiment of the present invention;

FIG. 8 is an exploded view of a fourth connection structure according to an embodiment of the present invention;

FIG. 9 is a cross-sectional view of a fourth connection structure according to an embodiment of the present invention.

Detailed ways

The preferred embodiments of the present invention are given and described in detail according to the accompanying drawings, Fig. 2 to Fig. 9, so that the functions and characteristics of the present invention can be better understood.

Please refer to Fig. 2 and Fig. 3, a structure for improving the back impact strength of the rotary seat mechanism according to the embodiment of the present invention includes a connecting wall plate 1, a first slide rail assembly 2 and a second slide rail assembly 3; The wall panel 1 is rotatably connected to the first slide rail assembly 2 and the second connecting structure 4 through a first connecting structure 4 , a second connecting structure 5 , a third connecting structure 6 and a fourth connecting structure 7 . On the second slide rail assembly 3; the connecting parts of the first connecting structure 4, the second connecting structure 5, the third connecting structure 6 and the fourth connecting structure 7 and the connecting wall plate 1 are distributed at the four corners of the connecting wall plate 1 and rotated counterclockwise arrangement, the first connecting structure 4 and the second connecting structure 5 are connected between the connecting wall plate 1 and the first slide rail assembly 2, the third connecting structure 6 and the fourth connecting structure 7 are connected between the connecting wall plate 1 and the second Between the slide rail components 3; the connecting part of the first connecting structure 4 and the connecting wall plate 1 is located directly above the first sliding rail component 2; the connecting part of the third connecting structure 6 and the connecting wall plate 1 is located in the second sliding rail assembly 3 directly above.

Please refer to Fig. 3-Fig. 5, the first connection structure 4 includes a first boss 41, a first step bolt 42, a first bushing 43 and a first connection bracket 44; A boss 41, a first connection hole is formed in the middle of the first boss 41; a second boss 441 is formed upward on the first connecting bracket 44, and a first screw hole is formed in the middle of the second boss 441; the first stepped bolt 42 Pass through the first connecting hole from top to bottom and screwed with the first screw hole; the first bushing 43 is sleeved outside the first stepped bolt 42 and placed between the first stepped bolt 42 and the first connecting hole; The first connecting bracket 44 is fixed on the first slide rail assembly 2 .

The first bushing 43 bears the radial load of the first stepped bolt 42; the first stepped bolt 42 connects the connecting wall plate 1 and the first bushing 43 to the first connecting bracket 44 from top to bottom, realizing rotation and supporting the hinge Function.

Please refer to Fig. 3, the second connection structure 5 includes a third boss 51, a first step nut 52, a second bushing 53, a second step bolt 54 and a second connection bracket 55; A third boss 51 is formed downward, and a second connection hole is formed in the middle of the third boss 51; the second connection bracket 55 forms a first arc-shaped slot 551; the second connection bracket 55 is fixed on the first slide rail assembly 2 Above; the second stepped bolt 54 is passed through the first arc-shaped slot 551 and the second connecting hole from bottom to top, and the first stepped nut 52 is screwed to the top of the second stepped bolt 54; the second bushing 53 sets It is arranged outside the second stepped bolt 54 and is arranged between the second stepped bolt 54 and the second connecting hole.

Referring to Fig. 3, Fig. 6 and Fig. 7, the third connecting structure 6 includes a second arc-shaped through groove 601, a second stepped nut 602, a washer 603, a plastic spacer 604, an outer hex nut 605, A third bushing 606, a third connecting bracket 607, a third stepped bolt 608, a fourth connecting bracket 609, a fourth boss 610, a fourth stepped bolt 611 and a fourth bushing 612; The wall plate 1 forms a second arc-shaped through groove 601; the third connecting bracket 607 is arc-shaped and one end forms a third connecting hole, and the other end of the third connecting bracket 607 forms a second screw hole; the third step bolt 608 connects On the fourth connecting bracket 609, the fourth connecting bracket 609 is fixed on the second slide rail assembly 3; the third stepped bolt 608 is sequentially passed through the third connecting hole, the outer hex nut 605, and the plastic spacer 604 from bottom to top , the second arc-shaped through groove 601 and the gasket 603; the second stepped nut 602 is screwed on the top of the third stepped bolt 608; the third bushing 606 is sleeved outside the third stepped bolt 608 and placed on the third Between the stepped bolt 608 and the third connecting hole; the connecting wall plate 1 forms a fourth boss 610 downward beside the second arc-shaped through groove 601; a fourth connecting hole is formed in the middle of the fourth boss 610; the fourth stepped bolt 611 passes through the fourth connecting hole from top to bottom and is screwed with the second screw hole; the fourth bushing 612 is sleeved outside the fourth stepped bolt 611 and placed between the fourth stepped bolt 611 and the fourth connecting hole .

The connecting part of the third connecting structure 6 and the connecting wall plate 1 is located directly above the second slide rail assembly 3, no matter how the connecting wall plate 1 moves, the third connecting structure 6 always sets upper and lower limits on the slotting curve of the connecting wall plate 1 bit support.

The plastic spacer 604 is made of wear-resistant POM material; the plastic spacer 604 forms a cavity, and the cavity cooperates with the outer hex nut 605, and the outer hex nut 605 is accommodated in the cavity.

The connecting wall plate 1 sinks in the second arc-shaped slot 601 and the peripheral part of the second arc-shaped slot 601 ; the top surface of the second stepped nut 602 is lower than the upper surface of the connecting wall plate 1 .

When assembling, the third step bolt 608 is fixed to the fourth connecting bracket 609 by a pressure riveting process;

The third connecting bracket 607 and the third bushing 606 are assembled through a riveting process;

Next step, the third connecting bracket 607 and the fourth connecting bracket 609 are pre-tightened by the outer hex nut 605 .

The next step is to assemble the plastic spacer 604, which is a wear-resistant POM material, and has a cavity matching the outer hexagon nut 605 to realize the limit, thereby ensuring the center through hole of the plastic spacer 604 and the platform of the second stepped nut 602 after assembly. There is enough gap between stages.

In the next step, the connecting wall plate 1 is assembled, on which there is a second arc-shaped through groove 601 , and there is sufficient clearance between the inner diameter of the second arc-shaped through groove 601 and the step of the second stepped nut 602 . The area of the second arc-shaped through groove 601 connecting the wall plate 1 sinks as a whole, so that the nut height of the second stepped nut 602 is lower than the upper mounting surface of the connecting wall plate 1, so as to prevent the second stepped nut 602 from impacting on the skeleton parts during movement. Impact.

In the next step, the gasket 603 is placed above the connecting wall 1 , and the joint between the gasket 603 and the connecting wall 1 is provided with a lubricating coating.

In the next step, the upper part of the second stepped nut 602 is a nut section, and the lower part is a stage stage, and there is a through internal thread inside, which is fastened by the internal thread and the third stepped bolt 608 .

Through the above design,

The connecting wall plate 1 can move between the spacer 603 and the upper and lower limiting interlayers of the plastic spacer 604 , and the moving track is the track of the second arc-shaped through groove 601 .

The plastic spacer 604 is assembled between the connecting wall plate 1 and the outer hex nut 605 to support the connecting wall plate 1 and limit the connecting wall plate 1 to collapse.

After the second stepped nut 602 and the third stepped bolt 608 are pre-tightened, the tilting of the connecting wall plate 1 can be limited, thereby improving the strength and rigidity of the system.

The connecting part of the third connecting structure 6 and the connecting wall plate 1 is located directly above the second slide rail assembly 3, no matter how the connecting wall plate 1 moves, the third connecting structure 6 always sets upper and lower limits on the slotting curve of the connecting wall plate 1 bit support. Therefore, the length of the cantilever is reduced, and the strength and rigidity of the mechanism are improved.

Referring to Fig. 3, Fig. 8 and Fig. 9, the fourth connection structure 7 includes a fifth boss 71, a third stepped nut 72, a fifth bushing 73, a fifth stepped bolt 74 and a fifth connecting bracket 75; the connecting wall plate 1 forms a fifth boss 71 downwards, and a fifth connecting hole is formed in the middle of the fifth boss 71; the fifth connecting bracket 75 is fixed on the second slide rail assembly 3 and forms a third arc-shaped passage slot; the fifth stepped bolt 74 passes through the third arc-shaped slot and the fifth connecting hole from bottom to top; the third stepped nut 72 is screwed on the top of the fifth stepped bolt 74; the fifth bushing 73 is sleeved on the The five stepped bolts 74 are placed outside and between the fifth stepped bolts 74 and the fifth connecting hole.

The side wall of the fifth bushing 73 bears the radial load of the third stepped nut 72; the boss of the third stepped nut 72 faces the step of the fifth stepped bolt 74 to control the axial compression force of the bolt here. The third stepped nut 72 and the fifth stepped bolt 74 fix the connecting wall plate 1 assembled with the fifth bushing 73 and the fifth connecting bracket 75 to realize auxiliary guiding and supporting functions.

Please refer to Fig. 2 to Fig. 9, in this embodiment, the first bushing 43, the second bushing 53, the fourth bushing 612 and the fifth bushing 73 are fixed on the connecting wall plate 1 through the pressure riveting process; The bushing 606 is fixed on the third connecting bracket 607 through a riveting process.

The first bush 43, the second bush 53, the third bush 606, the fourth bush 612 and the fifth bush 73 include a top surface, an annular side wall and a functional surface; the top of the annular side wall faces outward The top surface is formed by extension; the bottom of the annular side wall extends outward to form a functional surface; the functional surface includes a plurality of petals, and the petals are radially connected to the bottom of the annular side wall.

The functional surface of the bushing includes multiple radially arranged petals. The functional surface is petal-shaped to bear the axial load of the system. The length of the petal-shaped petals is convenient for processing, which can make the area of the functional surface large enough and reduce the support At the same time, the intermittent shape of the petals is also convenient for storing grease. At the same time, the surface of the bushing has a lubricating coating, which can reduce the friction coefficient between the functional surface and the supporting surface and increase the durability.

Surfaces of the first bush 43 , the second bush 53 , the third bush 606 , the fourth bush 612 and the fifth bush 73 are coated with a lubricating coating.

Originally, there were 4 hinges on the rotating turntable, but now it is increased to 4 hinges + 1 sinking groove curve, in which the sinking groove curve bracket is connected to the fifth hinge (No. 6 in Figure 2), thereby reducing the skeleton The cantilever length of the support 1 optimizes the stress situation in principle.

The present invention has been described in detail above with reference to the embodiments of the accompanying drawings, and those skilled in the art can make various changes to the present invention according to the above description. Therefore, some details in the embodiments should not be construed as limiting the present invention, and the present invention will take the scope defined by the appended claims as the protection scope of the present invention.

Claims

A structure for improving the back impact strength of a rotating seat mechanism, characterized in that it includes a connecting wall plate, a first slide rail assembly and a second slide rail assembly; the connecting wall plate passes through a first connecting structure, a A second connection structure, a third connection structure and a fourth connection structure are rotatably connected to the first slide rail assembly and the second slide rail assembly around the first connection structure; the first connection structure, the second connecting structure, the third connecting structure and the connecting parts of the fourth connecting structure and the connecting wall are distributed in the four corners of the connecting wall and arranged counterclockwise, the first A connecting structure and the second connecting structure are connected between the connecting wall plate and the first slide rail assembly, and the third connecting structure and the fourth connecting structure are connected between the connecting wall plate and the Between the second slide rail assembly; the connection between the first connection structure and the connecting wall plate is located directly above the first slide rail assembly; the connection between the third connection structure and the connecting wall plate The part is located directly above the second slide rail assembly.
The structure for improving the rear impact strength of a rotating seat mechanism according to claim 1, wherein the first connection structure includes a first boss, a first step bolt and a first connection bracket; the connection The wall board forms the first boss downwards, and a first connection hole is formed in the middle of the first boss; the first connecting bracket forms a second boss upwards, and a first boss is formed in the middle of the second boss. A screw hole; the first step bolt passes through the first connecting hole from top to bottom and is screwed with the first screw hole; the first connecting bracket is fixed on the first slide rail assembly.
The structure for improving the rear impact strength of a rotary seat mechanism according to claim 1, wherein the second connection structure includes a third boss, a first stepped nut, a second stepped bolt and a second The connecting bracket; the connecting wall plate forms the third boss downward, and a second connecting hole is formed in the middle of the third boss; the second connecting bracket forms a first arc-shaped through groove; the first The two connecting brackets are fixed on the first slide rail assembly; the second stepped bolts pass through the first arc-shaped slot and the second connecting hole from bottom to top, and the first stepped nuts Screwed on the top of the second stepped bolt.
According to the structure for improving the rear impact strength of the rotating seat mechanism according to claim 1, it is characterized in that the third connection structure includes a second arc-shaped through groove, a second stepped nut, a gasket, and a plastic spacer. sleeve, an outer hex nut, a third connecting bracket, a third step bolt, a fourth connecting bracket, a fourth boss and a fourth step bolt; the connecting wall plate forms the second arc-shaped passage slot; the third connecting bracket is arc-shaped and one end forms a third connecting hole, and the other end of the third connecting bracket forms a second screw hole; the third step bolt is connected to the fourth connecting bracket above, the fourth connecting bracket is fixed on the second slide rail assembly; the third step bolts are passed through the third connecting hole, the outer hexagon nut, the plastic spacer in sequence from bottom to top. sleeve, the second arc-shaped slot and the washer; the second stepped nut is screwed to the top of the third stepped bolt; the connecting wall is next to the second arc-shaped slot The fourth boss is formed downward; a fourth connection hole is formed in the middle of the fourth boss; the fourth stepped bolt passes through the fourth connection hole from top to bottom and connects with the second screw hole Screw connection.
The structure for improving the rear impact strength of a rotary seat mechanism according to claim 1, wherein the fourth connection structure includes a fifth boss, a third stepped nut, a fifth stepped bolt and a fifth A connecting bracket; the connecting wall plate forms the fifth boss downward, and a fifth connecting hole is formed in the middle of the fifth boss; the fifth connecting bracket is fixed on the second slide rail assembly and forms A third arc-shaped slot; the fifth step bolt passes through the third arc-shaped slot and the fifth connecting hole from bottom to top; the third step nut is screwed to the fifth step the top of the bolt.
The structure for improving the rear impact strength of a rotary seat mechanism according to claim 2, wherein the first connecting structure further includes a first bush, and the first bush is sleeved on the first stepped bolt The outer pad is arranged between the first stepped bolt and the first connection hole.
The structure for improving the rear impact strength of the rotating seat mechanism according to claim 3, wherein the second connection structure further includes a second bushing, and the second bushing is sleeved on the second stepped bolt The outer pad is arranged between the second stepped bolt and the second connection hole.
According to the structure for improving the rear impact strength of the rotary seat mechanism according to claim 4, the third connecting structure further comprises a third bushing and a fourth bushing; the third bushing is sleeved on The third stepped bolt is placed outside and placed between the third stepped bolt and the third connection hole; the fourth bushing is set outside the fourth stepped bolt and placed on the fourth stepped bolt. between the stepped bolt and the fourth connecting hole.
The structure for improving the rear impact strength of the rotating seat mechanism according to claim 5, wherein the fourth connection structure further includes a fifth bush; the fifth bush is sleeved on the fifth stepped bolt The outer pad is arranged between the fifth stepped bolt and the fifth connecting hole.
According to the structure for improving the rear impact strength of the rotating seat mechanism according to claim 4, it is characterized in that the connecting wall plate can move between the spacer and the upper and lower limiting interlayers of the plastic spacer, and the connecting wall The movement trajectory of the wall plate is the trajectory of the second arc-shaped slot.
According to the structure for improving the rear impact strength of the rotating seat mechanism according to claim 4, it is characterized in that the plastic spacer is fitted between the connecting wall plate and the outer hex nut, and the plastic spacer supports the The wall panels are connected and the collapse of the connected wall panels is restricted.
The structure for improving the rear impact strength of a rotating seat mechanism according to claim 4, wherein the second stepped nut and the third stepped bolt are pre-tightened to limit the tilting of the connecting wall plate, This improves the strength and rigidity of the system.
According to the structure for improving the rear impact strength of the rotary seat mechanism according to claim 4, it is characterized in that, the connection part between the third connection structure and the connection wall plate is located directly above the second slide rail assembly, no matter No matter how the connecting wall board moves, the third connecting structure always provides upper and lower limit support for the grooved curve of the connecting wall board, thereby reducing the length of the cantilever and improving the strength and rigidity of the mechanism.
The structure for improving the rear impact strength of a rotary seat mechanism according to claim 6, 7, 8 or 9, wherein the first bush, the second bush, the fourth bush and the The fifth bushing is fixed on the connecting wall plate through a riveting process; the third bushing is fixed on the third connecting bracket through a riveting process.
The structure for improving the rear impact strength of a rotary seat mechanism according to claim 6, 7, 8 or 9, wherein the first bush, the second bush, the third bush, the The fourth bush and the fifth bush include a top surface, an annular side wall and a functional surface; the top of the annular side wall extends outward to form the top surface; the bottom of the annular side wall faces The functional surface is formed by extending outward; the functional surface includes a plurality of petals, and the petals are radially connected to the bottom of the annular side wall.
The structure for improving the rear impact strength of a rotary seat mechanism according to claim 6, 7, 8 or 9, wherein the first bush, the second bush, the third bush, the The surfaces of the fourth bush and the fifth bush are coated with a lubricating coating.
According to the structure for improving the rear impact strength of the rotating seat mechanism according to claim 4, it is characterized in that the plastic spacer is made of wear-resistant POM material; the plastic spacer forms a cavity, and the cavity and the outer The hexagon nut is matched, and the outer hexagon nut is accommodated in the cavity.
The structure for improving the rear impact strength of the rotating seat mechanism according to claim 4, wherein the connecting wall plate is sunk in the second arc-shaped slot and the peripheral part of the second arc-shaped slot ; The top surface of the second stepped nut is lower than the upper surface of the connecting wall plate.