Chassis capable of swinging leftwards and rightwards

Abstract

The utility model provides a chassis capable of swinging left and right, which comprises a fixed seat and a bottom shell, the fixed seat is arranged in the bottom shell, the bottom shell comprises a bottom plate and two mounting plates fixedly connected to the bottom plate, the mounting plates are positioned above the bottom plate, the fixed seat is arranged between the two mounting plates, and a rotating shaft arranged along the front-back direction is arranged between the fixed seat and the mounting plates; two groups of elastic components are arranged between the fixed seat and the bottom plate, are symmetrically arranged on the left side and the right side of the rotating shaft and provide elasticity for the fixed seat and the bottom plate; an avoiding hole is formed in the bottom plate, the fixed seat is downwards exposed out of the bottom shell from the avoiding hole, the fixed seat is configured to be connected with an air rod of a seat, and the bottom shell is configured to be connected with a seat of the seat and swing left and right relative to the fixed seat together with the seat; under the condition that the overall structure and layout of an original chassis are not changed, left-right swinging is achieved by additionally arranging components in the chassis, users who have positive impressions on the product before are caught, and more markets are expanded outwards through the left-right swinging function.

Description

TECHNICAL FIELD

[0001] The utility model relates to furniture field, especially a left and right swing's chassis. BACKGROUND

[0002] The present seat back linkage seat, the seat is slidably arranged on the chassis, the fixed armrest seat is arranged on the chassis, the seat back is rotatably arranged on the armrest seat, and the seat back is also rotatably connected with the seat, when the seat back is inclined backward, the seat can be moved forward on the chassis, the seat can reduce the discomfort of rubbing back and running waist, thereby improving the use comfort, and market competitiveness is obtained.

[0003] The chassis has another prominent feature, that is, the chassis is integrated with the seat plate of the seat, and the seat is formed by arranging a cushion on the seat plate, more specifically, the chassis comprises a bottom shell, the bottom shell is an upwardly open shell, other components in the chassis are arranged in the bottom shell to realize the function of the chassis, and the seat plate is arranged above the bottom shell to close the bottom shell, the special and strong chassis is very conspicuous when other functional parts are arranged outside, and currently, the dynamic left and right swing chassis gradually becomes a trend, how to improve the above chassis to have the left and right swing function without being conspicuous is a problem we are currently facing. SUMMARY

[0004] In order to solve the above technical problems, the utility model provides a left and right swing chassis, because the external additional components are too conspicuous, a fixed seat is newly arranged in the bottom shell, the air rod originally connected by the bottom shell is changed to be connected by the fixed seat, the fixed seat is used as a static support body when swinging, the bottom shell is still connected with the seat, so that the bottom shell and the seat can swing together, the left and right swing of the bottom shell relative to the fixed seat is realized by arranging the rotating shaft, the horizontal state of the seat under the force-free state is maintained by the elastic components, so that the appearance of the original product is retained while the function is upgraded.

[0005] The technical scheme of the utility model is as follows:

[0006] A left and right swing chassis, comprising a fixed seat and a bottom shell, the fixed seat is arranged in the bottom shell, the bottom shell comprises a bottom plate at the bottom thereof and two mounting plates fixedly connected to the bottom plate, the mounting plates are arranged above the bottom plate, the fixed seat is arranged between the two mounting plates, and a rotating shaft is arranged between the fixed seat and the mounting plates in the front and back directions; two groups of elastic components are arranged between the fixed seat and the bottom plate, the two groups of elastic components are symmetrically arranged on the left and right sides of the rotating shaft and elastically support the fixed seat and the bottom plate; the bottom plate is provided with an avoiding hole, the fixed seat is exposed downward from the bottom shell through the avoiding hole, the fixed seat is configured as an air rod connected with a seat, and the bottom shell is configured as a seat connected with the seat and swings left and right relative to the fixed seat.

[0007] The fixing base is newly arranged inside the bottom shell, the air rod originally connected by the bottom shell is changed to be connected by the fixing base, the fixing base serves as a static support body when swinging, the bottom shell is still connected with the seat, so that the bottom shell and the seat can swing together, the left and right swinging of the bottom shell relative to the fixing base is realized through the setting of the rotating shaft, and the horizontal state of the seat under the force-free state is maintained through the elastic component, so that the appearance of the original product is reserved while the function is upgraded; without changing the overall structure and layout of the original bottom disc, the left and right swinging is realized through the additional components inside the bottom disc, the users who have a positive impression on the product are grasped, and more markets are expanded outward through the left and right swinging function.

[0008] As preferred, the fixing base comprises a sleeve part connected with the seat air rod, the sleeve part is vertically arranged and protrudes downward from the avoiding hole to the bottom shell; the avoiding hole is oval-shaped, and the length of the avoiding hole in the left and right direction is greater than that in the front and back direction, and the size of the avoiding hole is greater than that of the sleeve part. The avoiding hole is configured to avoid the fixing base and the air rod and provide a swinging space for the fixing base and the bottom shell, so that there is enough swinging space when the bottom shell swings left and right relative to the fixing base, so that the action can be smoothly performed.

[0009] As preferred, the fixing base further comprises a main body part and two wing parts respectively located on the left and right sides of the main body part, the sleeve part is arranged on the main body part, the rotating shaft is arranged on the main body part, and the elastic component is arranged between the wing part and the bottom plate; there is a gap between the bottom of the main body part and the bottom plate. The gap between the main body part and the bottom plate is also arranged for the bottom shell to swing relative to the fixing base, and a swinging space is provided, and the wing parts on both sides of the main body part are used to support the elastic component. When the bottom shell swings, the elastic component is compressed by the bottom shell, and the wing part can provide effective support.

[0010] As preferred, two groups of buffer components are arranged between the bottom of the fixing base and the bottom plate, and the two groups of buffer components are symmetrically arranged on the left and right sides of the rotating shaft. The buffer component is used to buffer the left and right swinging of the bottom shell, prevent the bottom shell from knocking the fixing base due to swinging, and prevent damage and noise, and also improve the use experience.

[0011] As preferred, the buffer component is fixedly arranged at the lower end of the mounting plate, and the buffer component protrudes towards the fixing base.

[0012] As preferred, the mounting plate is provided with a mounting part at the lower end, the mounting part protrudes towards the fixing base and is open upwards to form a slot, the mounting plate is provided with a clamping groove at the position of the mounting part, and the slot and the clamping groove are through; the buffer component comprises a plug-in part and an acting part, the plug-in part is further provided with a clamping part, the buffer component is mounted on the mounting part, the plug-in part is inserted into the slot, the clamping part is clamped in the clamping groove, and the acting part is exposed above the mounting part. In this way, the buffer component is stably mounted on the mounting plate.

[0013] As preferred, the buffer component is rubber. It is common and low in cost.

[0014] As preferred, the bottom shell is an upwardly open shell, the fixing seat is located in the bottom shell and at the rear of the bottom shell, and the two mounting plates are spaced apart in the front-rear direction at the rear of the bottom plate.

[0015] As preferred, the elastic component is a compression spring. It is common and low in cost.

[0016] The design starting point, concept and beneficial effects of the utility model with the above technical scheme are:

[0017] Since the external additional component is too conspicuous, a fixing seat is newly arranged inside the bottom shell, the air rod originally connected by the bottom shell is changed to be connected by the fixing seat, the fixing seat serves as a stationary support body when swinging, the bottom shell is still connected with the seat pan, so that the bottom shell and the seat pan can swing together, the left-right swinging of the bottom shell relative to the fixing seat is realized through the arrangement of the rotating shaft, and the horizontal state of the seat pan under the force-free state is maintained through the elastic component, so that the appearance of the original product is retained while the function is upgraded; the left-right swinging is realized through the arrangement of the component inside the bottom plate without changing the overall structure and layout of the original bottom plate, more markets are expanded outward through the left-right swinging function for the users who have a positive impression on the product. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a schematic view of the three-dimensional structure of the bottom plate in the embodiment of the utility model Figure 1 ;

[0019] Figure 2 is a schematic view of the three-dimensional structure of the bottom plate in the embodiment of the utility model Figure 2 ;

[0020] Figure 3 is a schematic view of the three-dimensional structure of the bottom plate in the embodiment of the utility model Figure 3 ;

[0021] Figure 4 is a schematic view of the three-dimensional structure of the fixing seat in the embodiment of the utility model Figure 1 ;

[0022] Figure 2 is a schematic view of the three-dimensional structure of the fixing seat in the embodiment of the utility model Figure 6 ;

[0023] Figure 7 is a schematic view of the three-dimensional structure of the locking assembly in the embodiment of the utility model

[0024] Figure 8 is a schematic view of the three-dimensional structure of the moving piece arranged on the rotating shaft in the embodiment of the utility model

[0025] Figure 9The utility model discloses a three -dimensional structure schematic diagram of setting first buffer piece in the embodiment of the utility model,

[0026] Figure 10 The utility model discloses a three -dimensional structure schematic diagram of setting second buffer piece in the embodiment of the utility model,

[0027] Figure 11 The utility model discloses a three -dimensional structure schematic diagram of second buffer piece and contact plate in the embodiment of the utility model,

[0028] Figure 12 The utility model discloses a three -dimensional structure schematic diagram of second buffer piece in the embodiment of the utility model,

[0029] Figure 1 The utility model discloses a three -dimensional structure schematic diagram of installing portion setting on the mounting plate in the embodiment of the utility model Figure 13 ;

[0030] Figure 2 The utility model discloses a three -dimensional structure schematic diagram of installing portion setting on the mounting plate in the embodiment of the utility model Figure 14 ;

[0031] Figure 1 The utility model discloses a three -dimensional structure sectional view schematic diagram of bottom disc in the embodiment of the utility model.

[0032] The fixed seat 1, sleeve portion 101, main body portion 102, wing portion 103, bottom shell 2, bottom plate 21, mounting seat 22, shell plate 23, mounting plate 221, vertical plate 222, rotating shaft 3, compression spring 4, avoiding hole 5, handrail seat 6, seat connecting piece 7, back connecting piece 8, sliding part 9, sliding groove 91, guide slot 92, connecting plate 93, moving part 10, elastic clamping portion 1001, linkage portion 1002, guide portion 1003, transmission part 11, locking piece 12, locking hole 13, mounting lug 14, operating rod 15, sliding block 16, slide 17, first buffer piece 18, second buffer piece 19, plug-in portion 191, action portion 192, clamping portion 193, installing portion 20, insertion groove 201, clamping groove 202, contact plate 24 are all the utility model discloses a kind of. DETAILED DESCRIPTION

[0033] In order to more clearly understand the above-mentioned purposes, features and advantages of the present application, the present application will be further described in detail below with reference to the drawings and specific embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0034] In the following description, many specific details are set forth in order to provide a thorough understanding of the present application, however, the present application can also be implemented in other ways different from those described herein, therefore, the scope of protection of the present application is not limited by the specific embodiments disclosed below.

[0035] In the description of the utility model, the terms "first", "second", "third" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0036] The specific implementation manner of the utility model is as follows:

[0037] As Figures 1-3 , 2 , the utility model provides a left and right swing chassis, including fixed seat 1 and bottom shell 2, fixed seat 1 is arranged in bottom shell 2, bottom shell 2 includes the bottom plate 21 at its bottom and two mounting plates 221 fixedly connected on the bottom plate 21, and the mounting plate 221 is located above the bottom plate 21, and the fixed seat 1 is arranged between the two mounting plates 221, and the fixed seat 1 and the mounting plate 221 are provided with the rotating shaft 3 arranged along the front and rear directions;Two groups of elastic components are arranged between the fixed seat 1 and the bottom plate 21, and the two groups of elastic components are symmetrically arranged on the left and right sides of the rotating shaft 3 and give the fixed seat 1 and the bottom plate 21 elasticity;The bottom plate 21 is provided with an avoiding hole 5, the fixed seat 1 is exposed downward from the bottom shell 2 in the avoiding hole 5, the fixed seat 1 is configured as the air rod connected with the seat, and the bottom shell 2 is configured as the seat connected with the seat and swings left and right relative to the fixed seat 1.

[0038] Because the external additional components are too conspicuous, the fixed seat 1 is newly arranged in the bottom shell 2, the air rod originally connected by the bottom shell 2 is changed to be connected by the fixed seat 1, the fixed seat 1 is used as a stationary support body when swinging, the bottom shell 2 is still connected with the seat, so that the bottom shell 2 and the seat can swing together, and the left and right swinging of the bottom shell 2 relative to the fixed seat 1 is realized by arranging the rotating shaft 3, and the horizontal of the seat in the stress-free state is maintained by the elastic component, so that the appearance of the original product is retained while the function is upgraded;Without changing the overall structure and layout of the original chassis, the left and right swinging is realized by additionally arranging components in the chassis, the user who has a positive impression on the product before is also expanded to more markets by the left and right swinging function.

[0039] Specifically, as Figure 4 , the chassis further includes the handrail seat 6 fixedly arranged at the rear end of the bottom shell 2, the seat connecting piece 7 slidingly arranged on the bottom shell 2 and the back connecting piece 8 rotationally arranged on the handrail seat 6, the seat connecting piece 7 is rotationally connected with the back connecting piece 8, the seat connecting piece 7 is used for connecting the seat, and the back connecting piece 8 is used for connecting the back, so that the seat and back linkage is realized.

[0040] The bottom shell 2 is an upwardly open shell, the fixing base 1 is located in the bottom shell 2 and at the rear of the bottom shell 2, the bottom shell 2 comprises the bottom plate 21 and the mounting seat 22 fixedly connected to the bottom plate 21, the mounting seat 22 is located above the bottom plate 21, the mounting seat 22 is formed with a containing space for mounting the fixing base 1, the fixing base 1 is arranged in the containing space and is rotationally connected to the mounting seat 22 through the front-rear arranged rotating shaft 3; the mounting seat 22 comprises two front-rear spaced apart horizontal plates and two left-right spaced apart vertical plates 222, the horizontal plate is the mounting plate 221, the vertical plate 222 and the mounting plate 221 form a frame structure, the fixing base 1 is arranged in the frame structure, and the fixing base 1 has a gap with the mounting plate 221, the vertical plate 222 and the bottom plate 21; the elastic component is a compression spring 4, which is common and low in cost; in the embodiment, each group of elastic components has two compression springs 4, so as to give more stable force feedback for left-right swinging.

[0041] As shown in Figures 6-8 , 5 , the fixing base 1 comprises a sleeve part 101 connected to the seat air rod, the sleeve part 101 is vertically arranged and protrudes downward from the avoiding hole 5 to the bottom shell 2; the avoiding hole 5 is oval-shaped, and the length of the avoiding hole 5 in the left-right direction is greater than that in the front-rear direction, and the size of the avoiding hole 5 is greater than that of the sleeve part 101; the avoiding hole 5 is configured to avoid the fixing base 1 and the air rod and provide a swinging space for the fixing base 1 and the bottom shell 2, so as to have enough swinging space when the bottom shell 2 swings left and right relative to the fixing base 1, so that the action can be smoothly performed; the fixing base 1 further comprises a main body part 102 and two wing parts 103 respectively located on the left and right sides of the main body part 102, the sleeve part 101 is arranged on the main body part 102, the rotating shaft 3 is arranged on the main body part 102, and the elastic component is arranged between the wing part 103 and the bottom plate 21; the bottom of the main body part 102 has a gap with the bottom plate 21; the gap between the main body part 102 and the bottom plate 21 is also arranged for the bottom shell 2 to swing relative to the fixing base 1, so as to provide a swinging space, and the wing parts 103 on both sides of the main body part 102 are used for supporting the elastic component, so that the elastic component is compressed by the bottom shell 2 when the bottom shell 2 swings, and the wing part 103 can provide effective support.

[0042] Further, as shown in Figures 9-13As shown, the chassis further comprises a locking assembly, the locking assembly comprising a sliding piece 9, a moving piece 10, a transmission piece 11 and a locking piece 12, the sliding piece 9 being slidingly arranged on the mounting seat 22 and configured as a driving piece of the locking assembly, the moving piece 10 being slidingly arranged on the rotating shaft 3 and in transmission connection with the sliding piece 9, the transmission piece 11 being connected with the moving piece 10 and the locking piece 12 respectively and configured to drive the locking piece 12 to move when the moving piece 10 moves, the locking piece 12 being inserted on the fixing seat 1 and slidingly arranged on the fixing seat 1; the mounting seat 22 is provided with a locking hole 13; the locking assembly is configured such that the sliding piece 9 drives the moving piece 10 to move, the moving piece 10 drives the transmission piece 11 to move, and the transmission piece 11 drives the locking piece 12 to move away from or into the locking hole 13, when the locking piece 12 enters the locking hole 13, the left and right swinging of the bottom shell 2 relative to the fixing seat 1 is prevented. The free function should also be optional, that is, it can be turned on or off by operation, when the free function is turned off, the seat can be stably kept horizontal to prevent fatigue from long-term swinging.

[0043] The rotating shaft 3 penetrates the mounting seat 22 and the fixing seat 1 from front to back, and is specifically arranged on the main body part 102 and the two front and back mounting plates 221, the moving piece 10 is sleeved on the rotating shaft 3 and located in the mounting seat 22, and also located in the main body part 102 between the two wing parts 103; the locking piece 12 has two, the locking pieces 12 are arranged along the left and right directions, the locking pieces 12 penetrate the wing parts 103 from the main body part 102 and are integrally inserted on the wing parts 103 to realize stable sliding, and the locking hole 13 is correspondingly provided on the longitudinal plate 222; the transmission piece 11 also has two, both of the transmission pieces 11 are rotationally connected on the main body part 102 of the fixing seat 1, and the transmission piece 11 is a torsional spring, one torsional arm of the torsional spring is inserted on the moving piece 10, and the other torsional arm of the torsional spring is inserted on the locking piece 12; the included angle formed by the two torsional arms of the torsional spring is towards the moving piece 10, one is to realize the movement direction change from front and back to left and right, and the other is to realize the delayed locking, so that the locking has a buffer, and since the torsional spring has elasticity, even if the locking piece 12 is not aligned with the locking hole 13 when the locking is operated, the locking can be completed after swinging to align the locking piece 12 with the locking hole 13; the two locking pieces 12 are respectively located on the left and right sides of the moving piece 10, and the two transmission pieces 11 are symmetrically arranged on the left and right sides of the moving piece 10; the locking piece 12 is arranged and moves along the left and right directions, and when locking, the left and right parts of the fixing seat 1 and the mounting seat 22 are locked, rather than the front or rear parts of the two, so that the force is more symmetrical and uniform when locking, and sitting is more stable; the rotation of the transmission piece 11 can convert the front and back movement of the moving piece 10 into the left and right movement of the locking piece 12.

[0044] The moving piece 10 is roughly block-shaped, the sliding piece 9 is roughly plate-shaped, the sliding piece 9 is arranged in the left-right direction, sliding grooves 91 are arranged at the left and right ends of the sliding piece 9, horizontal mounting ears 14 are arranged on the two longitudinal plates 222, bolts are arranged on the mounting ears 14, the bolts pass through the sliding grooves 91 to slide the sliding piece 9 on the longitudinal plates 222; a guide groove 92 is arranged at the middle of the sliding piece 9, a guide portion 1003 is protruded on the moving piece 10, the guide portion 1003 is column-shaped and is inserted in the guide groove 92; the guide groove 92 is an inclined groove, which can drive the moving piece 10 to slide forward and backward when the sliding piece 9 slides left and right, specifically, the guide groove 92 is inclined backward from left to right, when the sliding piece 9 slides left, the moving piece 10 slides forward, when the sliding piece 9 slides right, the moving piece 10 slides backward; at the same time, under the action of the transmission piece 11 of the torsional spring, when the moving piece 10 moves forward, the transmission piece 11 pulls the locking piece 12 to move toward the rotating shaft 3 and away from the locking hole 13 to unlock, when the moving piece 10 moves backward, the transmission piece 11 pushes the locking piece 12 to move toward the locking hole 13 and inserts into the locking hole 13 to lock.

[0045] The moving piece 10 comprises an elastic clamping portion 1001 and two linkage portions 1002 arranged at the left and right sides of the elastic clamping portion 1001, the elastic clamping portion 1001 is clamped and slidably arranged on the rotating shaft 3, the two linkage portions 1002 protrude outward from the elastic clamping portion 1001, and the linkage portions 1002 are connected with the transmission piece 11; the elastic clamping portion 1001 and the linkage portions 1002 are integrally formed; the moving piece 10 can be directly clamped on the rotating shaft 3, which is convenient and ingenious, and after being clamped on the rotating shaft 3, the sliding on the rotating shaft 3 can also be realized.

[0046] Further, the bottom shell 2 is provided with an operating rod 15, the operating rod 15 is slidably arranged on the bottom shell 2 and the operating rod 15 is connected with the sliding piece 9; the bottom shell 2 further comprises a shell plate 23 arranged vertically, the operating rod 15 is provided with a sliding block 16 which slides synchronously, the two are fixedly connected through screws, the sliding block 16 is located between the shell plate 23 and the longitudinal plate 222 of the mounting seat 22, the sliding block 16 is connected with the sliding piece 9 and is configured to slide by pulling the operating rod 15 to drive the sliding block 16 to slide, and the sliding block 16 drives the sliding piece 9 to slide; specifically, the operating rod 15 is inserted on the bottom shell 2, a sliding seat 17 is further fixedly arranged between the shell plate 23 and the longitudinal plate 222, and the sliding block 16 is slidably arranged in the sliding seat 17 to stably insert the operating rod 15 on the bottom shell 2; the sliding piece 9 is provided with a connecting plate 93 at the end close to the operating rod 15, the connecting plate 93 extends forward and bends downward to be inserted in the sliding block 16.

[0047] The first buffer 18 is arranged between the sliding block 16 and the mounting base 22 and the shell plate 23, and separates the sliding block 16 from the mounting base 22 and the shell plate 23; the first buffer 18 can prevent noise caused by impact when the pull-out operating rod 15 is pulled out, and optimizes the use experience when the pull-out operating rod 15 is pulled out; in the embodiment, the first buffer 18 has two, one of which is embedded on the longitudinal plate 222 of the mounting base 22 close to the sliding block 16, and the other is embedded on the end of the sliding block 16 close to the shell plate 23; the first buffer 18 is arranged on the longitudinal plate 222 and the sliding block 16 by clamping; the space between the mounting base 22 and the shell plate 23 is relatively small, and in such a small space, the above-mentioned scheme can be used to arrange a smaller first buffer 18 to effectively adapt to the size of the space and achieve the buffering effect.

[0048] As shown in ​ Two groups of second buffers 19 are arranged between the bottom of the fixing seat 1 and the bottom plate 21, and are symmetrically arranged on the left and right sides of the rotating shaft 3; the second buffer 19 is used to buffer the left and right swinging of the bottom shell 2, prevent the bottom shell 2 from knocking the fixing seat 1 due to swinging, and cause damage and noise, and also improve the use experience.

[0049] The second buffer 19 is fixedly arranged at the lower end of the mounting plate 221, and protrudes towards the fixing seat 1; specifically, the mounting plate 221 is provided with a mounting portion 20 at the lower end, the mounting portion 20 protrudes towards the fixing seat 1 and is open upwards to form a slot 201, the mounting plate 221 is provided with a clamping groove 202 at the position of the mounting portion 20, and the slot 201 and the clamping groove 202 are through; the second buffer 19 includes a plug-in portion 191 and an acting portion 192, and the plug-in portion 191 is further provided with a clamping portion 193, the second buffer 19 is installed on the mounting portion 20, the plug-in portion 191 is inserted into the slot 201, the clamping portion 193 is clamped in the clamping groove 202, and the acting portion 192 is exposed above the mounting portion 20, so that the second buffer 19 is stably installed on the mounting plate 221; the lower end of the wing portion 103 is also provided with a horizontally arranged contact plate 24, when the bottom shell 2 swings left and right, the second buffer 19 collides with the contact plate 24, thereby reducing the feeling of impact, noise and damage to the parts.

[0050] The first buffer 18 and the second buffer 19 are rubber, which is common and low in cost.

Claims

1. A chassis that can swing left and right, characterized in that: The device includes a fixed base and a base shell. The fixed base is disposed within the base shell, which includes a base plate at its bottom and two mounting plates fixedly connected to the base plate. The mounting plates are located above the base plate, and the fixed base is disposed between the two mounting plates. A rotating shaft arranged in the front-to-back direction is provided between the fixed base and the mounting plates. Two sets of elastic components are provided between the fixed base and the base plate, symmetrically arranged on the left and right sides of the rotating shaft to provide elasticity to the fixed base and the base plate. A clearance hole is provided on the base plate, through which the fixed base protrudes downward from the base shell. The fixed base is configured to connect to the gas spring of the seat, and the base shell is configured to connect to the seat and swing left and right relative to the fixed base together with the seat.

2. The left-right swaying chassis according to claim 1, characterized in that: The fixed seat includes a sleeve portion that connects to the seat gas spring. The sleeve portion is arranged vertically and protrudes downward from the bottom shell through a clearance hole. The clearance hole is elliptical, and its length in the left-right direction is greater than its length in the front-back direction. The size of the clearance hole is larger than the size of the sleeve portion.

3. The left-right swaying chassis according to claim 2, characterized in that: The mounting base also includes a main body and two wings located on the left and right sides of the main body, a sleeve is mounted on the main body, a rotating shaft is mounted on the main body, and an elastic component is mounted between the wings and the base plate; there is a gap between the bottom of the main body and the base plate.

4. The left-right swaying chassis according to claim 1, characterized in that: Two sets of buffer components are provided between the bottom of the fixed base and the base plate, and the two sets of buffer components are symmetrically arranged on the left and right sides of the rotating shaft.

5. The left-right swaying chassis according to claim 4, characterized in that: The buffer is fixedly installed at the lower end of the mounting plate, and the buffer protrudes towards the mounting base.

6. The left-right swaying chassis according to claim 5, characterized in that: The lower end of the mounting plate is provided with a mounting part, which protrudes towards the fixed seat and opens upward to form a slot. The mounting plate has a slot at the position of the mounting part, and the slot and the slot are connected. The buffer includes a plug-in part and an action part. The plug-in part also has a protruding snap-fit ​​part. The buffer is installed on the mounting part, the plug-in part is inserted into the slot, the snap-fit ​​part is snapped into the slot, and the action part is exposed above the mounting part.

7. The left-right swaying chassis according to claim 5, characterized in that: The cushioning element is made of rubber.

8. The left-right swaying chassis according to claim 1, characterized in that: The bottom shell is an upward-opening shell, the fixing base is located in the bottom shell and at the rear of the bottom shell, and two mounting plates are spaced apart at the rear of the bottom plate in the front-back direction.

9. The left-right swaying chassis according to claim 1, characterized in that: The elastic component is a compression spring.

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