CN217260418U - Seat connection structure and vehicle - Google Patents

Abstract

The utility model belongs to the technical field of the seat, a seat connection structure and vehicle is disclosed, seat connection structure is used for installing the seat subassembly in the frame, including main shaft and the spacing lantern ring. The main shaft includes cylinder portion and connects in the spacing portion of cylinder portion, the spacing lantern ring can be followed main shaft length direction and slided and have rotational position and limiting position, when the spacing lantern ring is located rotational position, the cylinder portion is located to the spacing lantern ring cover, and can rotate for the main shaft along the circumferencial direction of main shaft, when the spacing lantern ring is located limiting position, spacing portion is located to the spacing lantern ring cover, spacing portion can restrict the spacing lantern ring and rotate for the main shaft, thereby make the spacing lantern ring can rotate or static for the main shaft, and simple structure, and convenient operation. The main shaft can be fixedly arranged on the frame, and the limiting lantern ring can synchronously rotate with the seat assembly along the circumferential direction of the main shaft, so that the seat assembly can rotate or be static relative to the frame.

Description

Seat connection structure and vehicle

Technical Field

The utility model relates to a seat technical field especially relates to a seat connection structure and vehicle.

Background

Through installing the children's seat in the electric motor car, can make and ride passerby when riding, settle children in children's seat, when not using children's seat, thereby generally save automobile body space with children's seat folding in the frame.

In order to fold and install the child seat on the frame of the electric vehicle, the child seat is usually arranged on the frame of the electric vehicle in a rotating manner in the prior art, and the frame and the seat are locked and unlocked by arranging a limiting hole on the frame and the seat and inserting and pulling the limiting pin into and out of the limiting hole. However, the scheme has the problems that a limit pin needs to be additionally arranged on the frame and the seat, and the structure is complex. In addition, when the seat is installed in the front beam, for simple installation, often can set up the spacer pin in the narrow and small space of seat below, when wearing gloves or needing to look after children, inconvenient user pulls out the lockpin, and has the risk of pressing from both sides hindering the finger.

Therefore, a seat connecting structure and a vehicle are needed to solve the above problems.

SUMMERY OF THE UTILITY MODEL

According to the utility model discloses an aspect, the utility model provides a seat connection structure can make the spacing lantern ring rotate or static for the main shaft, and simple structure, convenient operation.

In order to achieve the purpose, the utility model adopts the following technical proposal:

a seat attachment structure for mounting a seat assembly to a vehicle frame, comprising:

the main shaft comprises a cylindrical part and a limiting part connected to the cylindrical part, and the main shaft can be fixedly arranged on the frame;

the seat assembly comprises a main shaft, a limiting lantern ring which can slide along the length direction of the main shaft and has a rotating position and a limiting position, when the limiting lantern ring is located at the rotating position, the limiting lantern ring is sleeved on the cylindrical part and can rotate relative to the main shaft along the circumferential direction of the main shaft, the limiting lantern ring and the seat assembly can synchronously rotate along the circumferential direction of the main shaft, when the limiting lantern ring is located at the limiting position, the limiting lantern ring is sleeved on the limiting part, and the limiting part can limit the limiting lantern ring to rotate relative to the main shaft.

In a preferred embodiment of the seat attachment structure, the outer wall of the stopper portion has a polygonal cross section, and when the stopper collar is located at the stopper position, the outer wall of the stopper portion is fitted to the inner wall of the stopper collar.

As a seat connection structure's preferred scheme, still include the rotating sleeve, above-mentioned spacing lantern ring slides and sets up in above-mentioned rotating sleeve, and above-mentioned rotating sleeve can be followed the circumferencial direction of main shaft and rotated with above-mentioned spacing lantern ring is synchronous, and above-mentioned rotating sleeve is used for fixing at above-mentioned seat subassembly.

In a preferred aspect of the seat attachment structure, a first stopper protrusion is protruded from an outer peripheral surface of the stopper collar, the rotating sleeve has a first stopper groove extending in a longitudinal direction of the main shaft, and the first stopper protrusion is slidably provided in the first stopper groove.

As a preferable scheme of the seat connection structure, two rotation sleeves are provided, and are respectively used for fixedly connecting the seat assembly, and one of the rotation sleeves is sleeved on the position limiting sleeve ring and can synchronously rotate along the circumferential direction of the main shaft with the position limiting sleeve ring.

As a preferable aspect of the seat connection structure, the seat connection structure further includes a bearing, the main shaft further includes a connection portion, the connection portion is connected to the cylindrical portion or the stopper portion, an inner ring of the bearing is fixedly disposed at the connection portion, and an outer ring of the bearing is fixedly disposed at the rotating sleeve.

As a preferable mode of the seat connection structure, the seat connection structure further includes a push button connected to the position restricting collar, and an outer peripheral surface of the push button is attached to an inner peripheral surface of the rotating sleeve and extends to an outside of an end surface of the rotating sleeve.

As a preferable mode of the seat connection structure, the seat further includes an elastic member connected to the stopper collar, and the elastic member always tends to drive the stopper collar from the rotational position to the stopper position.

As a preferable scheme of the seat connection structure, the seat connection structure further includes a fixing sleeve, the fixing sleeve is used for being fixed to the frame, the main shaft further includes a connecting portion connected to the cylindrical portion or the limiting portion, the connecting portion penetrates through the fixing sleeve, and the fixing sleeve can be fixedly arranged at any position of the connecting portion.

According to another aspect of the present invention, there is provided a vehicle, including the seat connecting structure described above, further including:

the frame comprises a frame body, and the main shaft is fixedly arranged on the frame body;

the seat assembly comprises a seat and a seat connecting piece connected to the seat, and the limiting lantern ring can synchronously rotate along the circumferential direction of the main shaft with the seat connecting piece.

The utility model has the advantages that:

the utility model provides a seat connection structure, its main shaft has cylinder portion and spacing portion, the length direction that the main shaft can be followed to the spacing lantern ring slides and has rotating position and limiting position, when the spacing lantern ring is located rotating position, the cylinder portion is located to the spacing lantern ring cover, the circumferencial direction that the main shaft can be followed to the spacing lantern ring rotates for the main shaft, because the main shaft can fixed mounting in the frame, the spacing lantern ring can rotate along the circumferencial direction of main shaft with the seat subassembly in step, thereby when the spacing lantern ring rotates for the main shaft, can drive the seat subassembly simultaneously and rotate for the frame, and then make the seat subassembly can expand or fold for the frame. When the limiting sleeve ring is located at the limiting position, the limiting sleeve ring is sleeved on the limiting portion, and the limiting portion can limit the limiting sleeve ring to rotate relative to the main shaft, so that the seat assembly is static relative to the frame, and the seat assembly can be fixed to the frame after being unfolded or folded. In addition, the limiting lantern ring is moved in the length direction of the main shaft, so that the seat assembly can be fixed on the frame or can rotate relative to the frame, additional limiting pins and other structures are not needed to be arranged, the structure is simple, and the operation of a user is facilitated.

The utility model also provides a vehicle can rotate or static for the main shaft through the circumferencial direction of the spacing lantern ring edge main shaft, realizes the rotation or static of seat chain link for the frame body to make the seat rotate for the frame body, or be fixed in the frame body, make the seat can be fixed in the frame body after accomplishing to expand or folding, simple structure is convenient for operate simultaneously.

Drawings

FIG. 1 is a schematic axial view of a seat attachment structure of an embodiment of the present invention without a stationary sleeve and a rotating sleeve;

FIG. 2 is an exploded view of the seat attachment structure of the embodiment of the present invention without the fixing sleeve and the rotating sleeve;

FIG. 3 is a schematic view of the connection between the stop collar and the rotating sleeve according to the embodiment of the present invention;

FIG. 4 is a schematic view of the connection relationship between the main shaft and the fixed sleeve in the embodiment of the present invention;

FIG. 5 is an axial schematic view of a vehicle in an embodiment of the present invention;

fig. 6 is a schematic side view of a vehicle according to an embodiment of the present invention.

In the figure:

100. a frame; 101. a frame body; 102. blocking the platform;

200. a seat assembly; 201. a seat; 202. a seat attachment;

1. a main shaft; 11. a connecting portion; 111. a second limit groove; 12. a cylindrical portion; 13. a limiting part;

2. fixing the sleeve; 21. a second limit bulge;

3. a limiting lantern ring; 31. a first limit protrusion; 32. inserting groove

4. Rotating the sleeve; 41. a first limit groove; 42. an end cap;

5. a bearing;

6. an elastic member;

7. a button; 71. inserting sheets; 72. a fourth limit bulge;

81. a limiting ring; 82. fastening a nut;

9. a gasket.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature "on," "above" and "over" the second feature may include the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are used in the orientation or positional relationship shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

The child seat can conveniently ride passerby and settle children, and the child seat still need be folded in the frame in addition to when not using child seat, save the automobile body space. And current structure mostly is to rotate the mode that sets up in the electric motor car frame with children's seat to set up spacing hole and realize the locking and the unblock of frame and seat through the mode of spacer pin and spacing hole plug on frame and seat, the structure is complicated. In addition, when the seat is installed on the front beam, the limit pin is often disposed in a narrow space below the seat for convenient installation, which is inconvenient to operate.

In view of the above problems, the present embodiment provides a seat connection structure for mounting a seat assembly 200 of a vehicle to a frame 100, which can be used in the seat technology field, and the seat assembly 200 can be a child seat, and can also be other seat structures.

The structure of the seat attachment structure of the present embodiment, which does not include the fixed sleeve 2 and the rotating sleeve 4, will be described with reference to fig. 1 to 2, in which fig. 1 shows an axial view thereof and fig. 2 shows an exploded view thereof. The seat connecting structure comprises a main shaft 1 and a position limiting sleeve ring 3, wherein the main shaft 1 can be fixedly arranged on the frame 100 and used as a rotating shaft for rotating the seat assembly 200 relative to the frame 100, the position limiting sleeve ring 3 is used for synchronously rotating with the seat assembly 200 along the circumferential direction of the main shaft 1, so that when the position limiting sleeve ring 3 rotates relative to the main shaft 1 along the circumferential direction of the main shaft 1, the seat assembly 200 can be driven to rotate relative to the frame 100, the position of the seat assembly 200 relative to the frame 100 can be adjusted, the seat assembly can be folded on the frame 100 or unfolded, and when the position limiting sleeve ring 3 is static relative to the main shaft 1 along the circumferential direction of the main shaft 1, the seat assembly 200 can be fixed on the frame 100. In the present embodiment, the unfolding of the seat assembly 200 relative to the frame 100 means that the seat assembly 200 is in a state capable of carrying a child, and the folding of the seat assembly 200 relative to the frame 100 means that the seat assembly 200 is in a state incapable of normally carrying a child, and the seat assembly 200 is close to the frame 100 to save the space of the vehicle body.

Specifically, the spindle 1 includes a connecting portion 11, a cylindrical portion 12, and a position-limiting portion 13 connected to the cylindrical portion 12, where the connecting portion 11 is connected to the cylindrical portion 12 or the position-limiting portion 13. The connecting portion 11, the cylindrical portion 12, and the stopper portion 13 are connected in this order along the longitudinal direction of the main shaft 1, or the connecting portion 11, the stopper portion 13, and the cylindrical portion 12 are connected in this order along the longitudinal direction of the main shaft 1. The limiting sleeve ring 3 can slide along the length direction of the main shaft 1 and has a rotating position and a limiting position, when the limiting sleeve ring 3 is located at the rotating position, the limiting sleeve ring 3 is sleeved on the cylindrical part 12 and can rotate relative to the main shaft 1 along the circumferential direction of the main shaft 1, so that the seat assembly 200 is driven to rotate relative to the frame 100; when the position limiting collar 3 is located at the position limiting position, the position limiting collar 3 is sleeved on the position limiting portion 13, and the position limiting portion 13 can limit the position limiting collar 3 to rotate relative to the main shaft 1, so that the seat assembly 200 is fixed on the frame 100. The seat assembly 200 is locked on or unlocked from the frame 100 by moving the position limiting sleeve ring 3 along the length direction of the main shaft 1 without arranging additional limiting pins and other structures, and the seat assembly is simple in structure and convenient to operate by a user.

With continued reference to fig. 1-2, the specific structure of the position-limiting portion 13 and the position-limiting collar 3 is that the cross section of the outer wall of the position-limiting portion 13 is polygonal, and when the position-limiting collar 3 is located at the position-limiting position, the outer wall of the position-limiting portion 13 is attached to the inner wall of the position-limiting collar 3, so as to limit the rotation of the position-limiting collar 3 relative to the main shaft 1, that is, the position-limiting collar 3 is stationary relative to the main shaft 1 along the circumferential direction of the main shaft 1. Optionally, the cross-sectional shape of the outer wall of the position-limiting portion 13 is a regular polygon, such as a regular hexagon, a regular octagon or a regular dodecagon, so that when the position-limiting collar 3 is located at the rotation position, the position-limiting collar 3 can be moved along the length direction of the main shaft 1 to be located at the position-limiting position every time the position-limiting collar 3 rotates a certain angle relative to the main shaft 1, so as to fix the position of the seat assembly 200 relative to the frame 100, thereby being capable of adjusting the angle of the seat assembly 200 relative to the frame 100 to meet different requirements. Furthermore, the outer wall cross-sectional shape of the restraint portion 13 may also be other than a regular polygon, and the restraint collar 3 may be movable to a restraint position only when the seat assembly 200 has been fully deployed relative to the vehicle frame 100, and/or folded against the vehicle frame 100, such that the seat assembly 200 may remain stationary relative to the vehicle frame 100 only when fully deployed or folded against the vehicle frame 100.

As an alternative structure, the inner wall of the limiting sleeve ring 3 is provided with a third limiting groove, the outer wall of the limiting part 13 is convexly provided with a third limiting protrusion, and when the limiting sleeve ring 3 is located at a limiting position, the third limiting protrusion is inserted into the third limiting groove, so that the limiting sleeve ring 3 is limited to rotate relative to the main shaft 1. Optionally, the inner wall of the position-limiting collar 3 has a plurality of third position-limiting grooves, and a third position-limiting protrusion can be inserted into the third position-limiting grooves in a selectable manner, so that when the position-limiting collar 3 is located at a rotating position, the position-limiting collar 3 can be moved along the length direction of the main shaft 1 to enable the third position-limiting protrusion to be inserted into one of the plurality of third position-limiting grooves every time the main shaft 1 rotates by a certain angle, so that the position-limiting collar 3 is located at a position-limiting position. Or, the third spacing groove has been seted up to spacing portion 13's outer wall, spacing lantern ring 3's inner wall is provided with the spacing arch of third, when spacing lantern ring 3 is located the rotating position, the spacing protruding butt of third in the outer peripheral face of cylinder portion 12, make spacing lantern ring 3 can rotate for cylinder portion 12 along the circumferencial direction of main shaft 1, when spacing lantern ring 3 is located limiting position, the spacing arch of third is pegged graft in the third spacing groove, similarly, spacing portion 13's outer wall has a plurality of third spacing grooves, the spacing arch of third can the alternative peg graft in the third spacing groove, its effect is no longer repeated.

Fig. 3 shows a schematic diagram of the connection relationship between the position limiting collar 3 and the rotating sleeve 4 in the embodiment of the present invention. Referring to fig. 3, since the seat assembly 200 rotates relative to the main shaft 1 along the circumferential direction of the main shaft 1, in order to improve the stability of the rotational connection and adapt to the use habit of the user, the seat assembly 200 should be stationary relative to the main shaft 1 along the length direction of the main shaft 1, but the position limiting lantern ring 3 rotating synchronously with the seat assembly 200 needs to slide along the length direction of the main shaft 1. In order to solve the problem, the seat connection structure further comprises a rotating sleeve 4, the position limiting sleeve ring 3 is arranged on the rotating sleeve 4 in a sliding mode, the rotating sleeve 4 can rotate synchronously with the position limiting sleeve ring 3 along the circumferential direction of the main shaft 1, the rotating sleeve 4 is used for being fixed on the seat assembly 200, therefore when the position limiting sleeve ring 3 slides along the length direction of the main shaft 1, the rotating sleeve 4 and the seat assembly 200 are static relative to the main shaft 1 along the length direction of the main shaft 1, the use habit is met, and the connection stability is improved.

With reference to fig. 3, the specific structure of the spindle is that the first limiting protrusion 31 is convexly disposed on the outer circumferential surface of the limiting collar 3, the rotating sleeve 4 has a first limiting groove 41, the first limiting groove 41 extends along the length direction of the spindle 1, and the first limiting protrusion 31 is slidably disposed in the first limiting groove 41. Through setting up first spacing arch 31 to through the mode of first spacing arch 31 pegging graft in first spacing groove 41, when spacing lantern ring 3 slided along the length direction of main shaft 1, it is static for main shaft 1 to rotate sleeve 4 along the length direction of main shaft 1, still has easy to assemble's effect simultaneously. Optionally, the first limiting protrusions 31 are provided in a plurality, correspondingly, the rotating sleeve 4 has a plurality of first limiting grooves 41, and the first limiting protrusions 31 are respectively slidably disposed in the first limiting grooves 41, so that the matching between the limiting sleeve ring 3 and the rotating sleeve 4 is more stable.

As an alternative scheme, the first limiting protrusion is convexly arranged on the inner wall of the rotating sleeve 4, the outer peripheral surface of the limiting sleeve ring 3 is provided with a first limiting groove, the first limiting groove extends along the length direction of the main shaft 1, and the first limiting protrusion is slidably arranged in the first limiting groove. In addition, the outer wall of the limiting sleeve ring 3 can be polygonal, and the outer wall of the limiting sleeve ring 3 is attached to the inner wall of the rotating sleeve 4.

Fig. 4 is a schematic view showing a connection relationship between the main shaft and the fixed sleeve in the embodiment of the present invention. Referring to fig. 1, 2 and 4, two rotating sleeves 4 are provided, and are respectively used for fixedly connecting the seat assembly 200, one of the rotating sleeves 4 is sleeved on the limiting sleeve ring 3 and can rotate synchronously with the limiting sleeve ring 3 along the circumferential direction of the main shaft 1, and the rotating fit between the rotating sleeve 4 and the main shaft 1 is more stable by providing the two rotating sleeves 4.

In order to further stabilize the rotational connection between the rotating sleeve 4 and the main shaft 1, the seat connection structure further includes a bearing 5, an inner ring of the bearing 5 is fixedly disposed on the connecting portion 11, and an outer ring of the bearing 5 is fixedly disposed on the rotating sleeve 4, so as to reduce the frictional resistance when the rotating sleeve 4 rotates. Optionally, the number of the bearings 5 is two, inner rings of the two bearings 5 are respectively and fixedly arranged on the connecting portions 11 located at two sides of the fixed sleeve 2, and outer rings of the two bearings 5 are respectively and fixedly arranged on the two rotating sleeves 4, so that the two rotating sleeves 4 are both connected with the connecting portions 11 through the bearings 5, and the friction resistance is reduced.

With continued reference to fig. 1-2, the seat connection structure further includes an elastic element 6 connected to the position-limiting collar 3, the elastic element 6 always has a tendency of driving the position-limiting collar 3 to move from the rotational position to the position-limiting position, optionally, the elastic element 6 is connected to the position-limiting collar 3 and an outer ring of the bearing 5 near one side of the position-limiting collar 3, and a tension spring or a compression spring is selected according to a relative position of the cylindrical portion 12 and the position-limiting portion 13 with respect to the connecting portion 11, for example, in this embodiment, the cylindrical portion 12 is near the connecting portion 11 with respect to the position-limiting portion 13, so that the compression spring is selected, and when the position-limiting collar 3 is located at the rotational position, that is, when the position-limiting collar 3 is located at the cylindrical portion 12, the compression spring is in a compressed state, and always has a tendency of driving the position-limiting collar 3 to move toward the position-limiting position, that is, the rotational position moves from the rotational position to the position.

With continued reference to fig. 1-3, the seat connection structure further includes a button 7, the button 7 is connected to the limiting collar 3, optionally, an insertion sheet 71 is provided on the button 7, a slot 32 is provided on the limiting collar 3, the button 7 is connected to the limiting collar 3 by inserting the insertion sheet 71 into the slot 32, optionally, the insertion sheet 71 is provided in a plurality, the limiting collar 3 is provided with a plurality of slots 32, and the plurality of insertion sheets 71 are respectively inserted into the plurality of slots 32. The outer peripheral surface of the button 7 is attached to the inner peripheral surface of the rotating sleeve 4 and extends out of the end surface of the rotating sleeve 4, so that when a user needs to adjust the seat assembly 200, the state of the limiting sleeve ring 3 can be changed by only pressing the button 7 along the length direction of the spindle 1.

With continued reference to fig. 1-3, to accommodate usage habits, the knob 7 should rotate synchronously with the stop collar 3 and the rotating sleeve 4. In order to realize the function, the outer peripheral surface of the button 7 is convexly provided with fourth limiting protrusions 72, the number of the fourth limiting protrusions 72 corresponds to the number of the first limiting grooves 41 on the rotating sleeve 4, and the fourth limiting protrusions 72 are slidably arranged in the first limiting grooves 41, so that the button 7 and the rotating sleeve 4 can synchronously rotate. Optionally, the rotating sleeve 4 far from the button 7 is covered with an end cap 42 for dust prevention.

With continued reference to fig. 1-4, in the present embodiment, the seat connection structure further includes a fixing sleeve 2, the fixing sleeve 2 is used for being fixed to the frame 100, the connection portion 11 is disposed through the fixing sleeve 2, and the fixing sleeve 2 can be fixedly disposed at any position of the connection portion 11. Specifically, the fixing sleeve 2 can slide relative to the connecting portion 11, and the structure thereof may be: the inner peripheral surface of the fixed sleeve 2 is convexly provided with a second limiting protrusion 21, the outer peripheral surface of the connecting part 11 is provided with a second limiting groove 111 along the length direction of the main shaft 1, and the second limiting protrusion 21 is slidably arranged in the second limiting groove 111, so that the relative movement between the main shaft 1 and the fixed sleeve 2 along the circumferential direction of the main shaft is limited. The effect is that the position of the fixing sleeve 2 relative to the main shaft 1 along the length direction of the main shaft 1 can be finely adjusted, and in addition, the main shaft 1 is convenient to install in the fixing sleeve 2. As an alternative, the second limiting protrusion is convexly disposed on the outer circumferential surface of the connecting portion 11, the inner circumferential surface of the fixing sleeve 2 has a second limiting groove, and the second limiting protrusion is slidably disposed in the second limiting groove.

Describing how to fixedly arrange the fixing sleeve 2 on the connecting portion 11, with continuing reference to fig. 1-4, optionally, the seat connecting structure further includes two limiting rings 81 and a fastening nut 82, the two limiting rings 81 are respectively sleeved on the connecting portion 11, the cylindrical portion 12 and the limiting portion 13 are arranged on one side of the connecting portion 11, the fastening nut 82 is screwed on the other side of the connecting portion 11, and the fastening nut 82, the inner ring of one bearing 5, the one limiting ring 81, the fixing sleeve 2, the other limiting ring 81, and the inner ring of the other bearing 5 are sequentially abutted along the length direction of the main shaft 1, so that the fixing sleeve 2 is fixedly arranged between the two limiting rings 81, that is, fixedly arranged on the connecting portion 11.

In other embodiments, the main shaft 1 may also be fixedly connected to the fixing sleeve 2 by interference fit, or the main shaft 1 may be directly fixedly disposed on the frame 100 by welding, so that it is always stationary relative to the frame 100.

With continued reference to fig. 1-4, the device further includes two washers 9, the two washers 9 are respectively sleeved on the two limiting rings 81 and respectively abut against two ends of the fixed sleeve 2, and respectively abut against the two rotating sleeves 4, so as to prevent friction and wear between the rotating sleeves 4 and the fixed sleeve 2. Alternatively, the washer 9 is made of a nylon material, which has good wear resistance and corrosion resistance.

Fig. 5 shows an axis view of a vehicle in an embodiment of the invention; fig. 6 shows a schematic side view of a vehicle in an embodiment of the invention. Referring to fig. 5 to 6, the present embodiment also provides a vehicle, which may be a bicycle, an electric tricycle, a motorcycle, or the like. The vehicle includes the seat connection structure, and further includes a frame 100 and a seat assembly 200, and the frame 100 may be a front beam tube of the vehicle, or may be a saddle tube, and the like, which is not limited thereto. The frame 100 comprises a frame body 101, and the main shaft 1 can be fixedly arranged on the frame body 101; the seat assembly 200 includes a seat 201 and a seat link 202 connected to the seat 201, and the position restricting collar 3 is rotatable in synchronization with the seat link 202 in the circumferential direction of the main shaft 1. The seat connecting piece 202 rotates or stands still relative to the frame body 101 by the rotation or standing still of the position limiting lantern ring 3 relative to the main shaft 1 along the circumferential direction of the main shaft 1, so that the seat 201 can rotate relative to the frame body 101 or be fixed on the frame body 101, and the seat 201 can be fixed on the frame body 101 after being unfolded or folded.

With continued reference to fig. 5-6, when the seat assembly 200 is unfolded relative to the frame 100, the seat 201 needs to bear the weight of the child, and when the seat assembly 200 and the frame 100 are fixed by using the position-limiting collar 3, the position-limiting collar 3 and the position-limiting portion 13 are easily damaged because the position-limiting collar 3 and the position-limiting portion 13 can bear the full torque. In order to solve this problem, the frame body 101 is further provided with a platform 102, and when the seat assembly 200 is unfolded relative to the frame 100, the seat connector 202 abuts against the platform 102, so that the platform 102 is supported by the seat connector 202, and the connection between the seat assembly 200 and the frame 100 is more stable when the seat assembly is unfolded.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, rearrangements, and substitutions will now occur to those skilled in the art without departing from the scope of the invention. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims (10)

1. A seat attachment structure for mounting a seat assembly (200) to a vehicle frame (100), comprising:

the main shaft (1) comprises a cylindrical part (12) and a limiting part (13) connected to the cylindrical part (12), and the main shaft (1) can be fixedly mounted on the frame (100);

the limiting sleeve ring (3) can slide along the length direction of the main shaft (1) and has a rotating position and a limiting position, when the limiting sleeve ring (3) is located at the rotating position, the cylindrical portion (12) is sleeved with the limiting sleeve ring (3), the limiting sleeve ring (3) can rotate relative to the main shaft (1) along the circumferential direction of the main shaft (1), the limiting sleeve ring (3) can synchronously rotate along the circumferential direction of the main shaft (1) with the seat assembly (200), when the limiting sleeve ring (3) is located at the limiting position, the limiting portion (13) is sleeved with the limiting sleeve ring (3), and the limiting portion (13) can limit the limiting sleeve ring (3) to rotate relative to the main shaft (1).

2. The seat connecting structure according to claim 1, wherein the cross section of the outer wall of the limiting portion (13) is polygonal, and when the limiting collar (3) is located at the limiting position, the outer wall of the limiting portion (13) is attached to the inner wall of the limiting collar (3).

3. The seat connecting structure according to claim 1, further comprising a rotating sleeve (4), wherein the position limiting collar (3) is slidably disposed on the rotating sleeve (4), the rotating sleeve (4) can rotate synchronously with the position limiting collar (3) along the circumferential direction of the main shaft (1), and the rotating sleeve (4) is used for being fixed on the seat assembly (200).

4. The seat connecting structure according to claim 3, wherein a first limiting protrusion (31) is protruded from an outer peripheral surface of the limiting collar (3), the rotating sleeve (4) has a first limiting groove (41), the first limiting groove (41) extends along a length direction of the main shaft (1), and the first limiting protrusion (31) is slidably disposed in the first limiting groove (41).

5. The seat connecting structure according to claim 3, wherein two rotating sleeves (4) are provided for fixedly connecting the seat assembly (200), and one of the rotating sleeves (4) is sleeved on the position limiting sleeve ring (3) and can rotate synchronously with the position limiting sleeve ring (3) along the circumferential direction of the main shaft (1).

6. The seat connecting structure according to claim 3, further comprising a bearing (5), wherein the main shaft (1) further comprises a connecting portion (11), the connecting portion (11) is connected to the cylindrical portion (12) or the stopper portion (13), an inner ring of the bearing (5) is fixedly disposed at the connecting portion (11), and an outer ring of the bearing (5) is fixedly disposed at the rotating sleeve (4).

7. The seat connection structure according to claim 3, further comprising a button (7), wherein the button (7) is connected to the position limiting collar (3), and an outer circumferential surface of the button (7) is attached to an inner circumferential surface of the rotating sleeve (4) and extends out of an end surface of the rotating sleeve (4).

8. Seat connection according to any of claims 1-7, characterized in that it further comprises a spring (6) connected to the check ring (3), said spring (6) always having a tendency to drive the check ring (3) from the rotational position to the check position.

9. The seat connecting structure according to any one of claims 1 to 7, further comprising a fixing sleeve (2), wherein the fixing sleeve (2) is used for being fixed to the frame (100), the main shaft (1) further comprises a connecting portion (11) connected to the cylindrical portion (12) or the limiting portion (13), the connecting portion (11) is inserted into the fixing sleeve (2), and the fixing sleeve (2) can be fixedly arranged at any position of the connecting portion (11).

10. A vehicle characterized by comprising the seat attachment structure according to any one of claims 1 to 9, and further comprising:

the frame (100) comprises a frame body (101), and the main shaft (1) is fixedly arranged on the frame body (101);

the seat assembly (200) comprises a seat (201) and a seat connecting piece (202) connected to the seat (201), and the limiting collar (3) and the seat connecting piece (202) can synchronously rotate along the circumferential direction of the main shaft (1).

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