CN216915612U - Base mechanism and child seat - Google Patents

Abstract

The utility model relates to a base mechanism and a child seat with the same, comprising: the rotary table comprises a base shell, a base framework, a rotary disc and a plurality of rollers for supporting the rotary disc; the base housing includes: a lower seat shell and an upper seat cover; the lower seat shell and the upper seat cover are integrally formed; the upper seat cover is fixed to the lower seat shell; the base framework is welded into a whole by a plurality of metal pipes; the base framework is arranged in the base shell and fixed to the lower base shell; a plurality of supporting columns for mounting the rollers are formed in the lower seat shell; the top of at least part of the supporting columns is upwards protruded to form a limiting bump for limiting the rotating disc; the plurality of limiting lugs are arranged on the periphery of the rotating disc; a part of the base framework is enclosed into a rectangular space; four angles in the rectangular space are all provided with support columns. The utility model has the beneficial effect that the shock resistance is improved by arranging the support columns.

Description

Base mechanism and child seat

Technical Field

The utility model relates to a base mechanism and a child seat with the same.

Background

Safety facilities such as safety belts, safety airbags and the like arranged on the existing automobile are designed according to adult standards and cannot be suitable for children, in real life, the children often need to ride in the automobile along with adults, the safety facilities on the automobile cannot be suitable for the children, and the potential safety hazards exist when the children ride in the automobile at the moment.

At present, to the potential safety hazard of car is taken to children, child safety seat has been designed, this kind of child safety seat is installed on the car, supply the device that has constraint function guarantee children and take car trip safety that children take, because child safety seat guarantees the life safety of protection children when the traffic accident takes place for the car, this makes child safety seat anti-collision performance want good, with the life safety of protection children, and the child safety seat on the market all need can put into market through the test of child safety seat collision law.

Conventional child seats typically incorporate a backrest structure on the base to increase the ability to resist impact. But the connection position of the backrest structure and the base is loosened after long-time use, which may affect the impact resistance.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to a base mechanism and a child seat to solve the problems of the related art.

In order to achieve the purpose, the utility model provides the following technical scheme:

a base mechanism, comprising: the rotary table comprises a base shell, a base framework, a rotary disc and a plurality of rollers for supporting the rotary disc; the base housing includes: a lower seat shell and an upper seat cover; the lower seat shell and the upper seat cover are integrally formed; the upper seat cover is fixed to the lower seat shell; the base framework is welded into a whole by a plurality of metal pipes; the base framework is arranged in the base shell and fixed to the lower base shell; a plurality of supporting columns for mounting the rollers are formed in the lower seat shell; the top of at least part of the supporting columns is upwards protruded to form a limiting bump for limiting the rotating disc; the plurality of limiting lugs are arranged on the periphery of the rotating disc; a part of the base framework forms a rectangular space; four angles in rectangle space all are equipped with the support column.

As a further scheme of the utility model: the outer edge of the rotating disk is upwards protruded to form an annular convex part.

As a further scheme of the utility model: the rotating disc is provided with a ring groove; the annular convex part forms the outer groove wall of the ring groove; the upper seat cover forms an exposed hole for exposing the rotating disc; the hole opening of the exposed hole extends downwards to form an annular convex rib; the annular convex rib extends into the annular groove.

As a further scheme of the utility model: a base mechanism further comprising: a buffer mechanism; the buffer mechanism includes: a plurality of buffer hooks; the buffer hook is fixed to the base framework; the annular convex part is inserted into the buffer hook; the end of the buffer hook is provided with a protection piece.

As a further scheme of the utility model: a base mechanism further comprising: the circular ring piece is used for assisting in supporting the rotating disc; the ring member is located below the rotating disk and the ring member is fixed to the lower seat shell.

As a further scheme of the utility model: a base mechanism further comprising: a rotation locking mechanism for locking the position of the rotary plate relative to the base housing; the rotation lock mechanism includes: a rotating seat and a locking pin; the rotating seat is fixed to the rotating disc; the locking pin is movably arranged on the rotating seat; the circular ring piece is provided with a pin hole for inserting the locking pin; the locking pin has a locking position and an unlocking position relative to the rotating seat; the locking pin is inserted into the pin hole when in the locking position; in the unlocked position, the locking pin is withdrawn from the pin hole.

As a further scheme of the utility model: the base skeleton includes: the connecting pipe and the two side pipe groups; the side tube group includes: a front bent pipe and a rear straight pipe; the front bent pipe is welded to the rear straight pipe; the rear straight tube is welded to the connecting tube.

As a further scheme of the utility model: the front bent pipe and the connecting pipe are both fixed with buffer hooks; a buffer hook fixed on the front bent pipe is positioned on the front side of the rotating disk; the buffer hook fixed by the connecting pipe is positioned at the rear side of the rotating disk.

As a further scheme of the utility model: a base mechanism further comprising: a swivel mount and a support leg set; the rotary seat is fixed to the two front bent pipes; the supporting leg group is rotatably connected to the rotary seat.

As a further scheme of the utility model: the lower seat shell includes: a bottom plate portion and a wall portion extending upward from an outer edge of the bottom plate portion; the height of the rear end of the enclosing wall part is gradually increased from front to back; the upper seat cover covers the top of the enclosure portion so that the upper seat cover and the enclosure portion together constitute a backrest structure.

A child seat, comprising: a chair body and the base mechanism; the chair body is mounted to the rotating disc.

Compared with the prior art, the utility model has the beneficial effects that: the shock resistance is improved by the arrangement of the supporting columns.

The structural arrangement of support column can play the effect of reinforcing shock resistance. The structural arrangement of the lower seat shell and the upper seat cover has higher strength and enhances the shock resistance compared with the form of installing the raised upper seat cover on the traditional platy lower seat shell.

The transmission of whole impact force is gradually transferred to the buffer gear by the atress spare part finally to realize progressively releasing impact force, in addition, each spare part of being strikeed itself can respond in time and warp and digest impact force when the striking, thereby reduced forward acceleration, guaranteed the security when children's chair uses.

Drawings

FIG. 1 is a schematic view of a child seat;

FIG. 2 is a perspective view of a base mechanism that may be used with the child seat of FIG. 1;

FIG. 3 is a perspective view of the seat mechanism of FIG. 2 from another perspective;

FIG. 4 is a plan view of the seat mechanism of FIG. 2;

FIG. 5 is a cross-sectional view of the structure of FIG. 4;

FIG. 6 is an exploded view of the seat mechanism of FIG. 2;

FIG. 7 is a schematic view of the seat mechanism of FIG. 1 with the upper seat cover removed;

FIG. 8 is a top view of the structure of FIG. 7;

FIG. 9 is a schematic view of the structure of FIG. 8 with the rotating disk removed;

FIG. 10 is a schematic view of the rotary plate and rotary locking mechanism of the base mechanism of FIG. 1;

FIG. 11 is a schematic view of a rotational locking mechanism of the structure of FIG. 10;

FIG. 12 is a schematic view of the swivel plate and upper housing cover of the base structure of FIG. 1;

FIG. 13 is a cross-sectional view of the structure of FIG. 12 taken along line A-A;

FIG. 14 is an enlarged partial view of the structure of FIG. 13;

FIG. 15 is a schematic view of the rotational locking and unlocking mechanism of the child seat of FIG. 1;

FIG. 16 is a top view of the twist-lock mechanism of FIG. 15;

FIG. 17 is a front view of the rotational locking mechanism of FIG. 16;

FIG. 18 is a schematic view of the locking pin and slide of the rotational locking mechanism of FIG. 17;

FIG. 19 is a schematic view of an unlocking mechanism of the child seat of FIG. 1;

FIG. 20 is a schematic view of the structure of FIG. 19 with the release base removed;

FIG. 21 is a schematic view from another perspective of the structure of FIG. 20;

FIG. 22 is a schematic view of the front of the body of the child seat of FIG. 1;

FIG. 23 is a side elevational view of the chair body of FIG. 22;

FIG. 24 is a schematic view of the back of the chair body of FIG. 22;

FIG. 25 is a schematic view of the inner metal frame of the child seat of FIG. 1;

FIG. 26 is a schematic view from another perspective of the structure of FIG. 25;

FIG. 27 is a schematic view of the front of the head rest of the child seat of FIG. 1;

fig. 28 is a schematic view of the side of the head rest of fig. 27.

The child seat 100, a base 101, a seat body 102, a rotating mechanism 103, a head rest 104, an unlocking mechanism 105 and a horizontal reference surface 1001;

the seat mechanism 10, the seat housing 11, the lower seat shell 111, the bottom plate portion 1111, the enclosing wall portion 1112, the support column 1113, the limit protrusion 1114, the recess 1115, the stopper 1116, the upper seat cover 112, the exposure hole 1121, the annular rib 1122, the window 1123, the backrest structure 110, the seat frame 12, the connection pipe 121, the front bent pipe 122, the rear straight pipe 123, the swivel base 124, the support leg group 125, the swivel plate 13, the annular protrusion 131, the annular groove 132, the roller 14, the buffer mechanism 15, the buffer hook 151, the guard 152, the annular ring 16, the swivel lock mechanism (17,17a), the lock seat (171,171a), the lock pin (172,172a), the slider (173,173a), the slider return spring 174 a;

the chair body shell 21, the chair body mounting frame 22, the mounting plate 221, the connecting rod sliding groove 222, the shock absorption sleeve 223, the chair body reinforcing frame 23, the elbow pipe 231, the elbow pipe lower connecting rod 232, the elbow pipe middle connecting rod 233 and the auxiliary reinforcing rod 234;

a head protection part 41, a sliding seat part 42, a neck part 43, a head support neck reinforcing plate 431, a back plate 44, a head support connecting reinforcing plate 45, a sliding strip 46, a guide strip 47 and a height adjusting pin groove 48;

a button member 51, a swinging member 52, a wire rope, a transmission connecting member 53, a position indicator 54, an indicator return spring 55 and an unlocking base 56.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1 to 28, the child seat 100 includes: a base 101 and a seat body 102. The base 101 functions as a chassis for placing the child seat 100. The seat body 102 is used for seating a child. The seat body 102 is mounted to the base 101. The child seat 100 further comprises a rotation mechanism 103. The swivel mechanism 103 rotatably mounts the seat body 102 to the base 101. The full-group child seat 100 can be adapted to children of all ages, can realize full-group functions by adjusting the relative positions of the seat body 102 and the base 101, and can also be adapted to children of all ages by arranging an additional device on the seat body 102.

The base 101 includes: a base housing 11 and a base frame 12. The base frame 12 serves to increase the strength of the base housing 11. The base frame 12 is mounted into the base housing 11.

The rotation mechanism 103 includes: a rotary disk 13, a plurality of rollers 14 for supporting the rotary disk 13, and a plurality of buffer hooks 151 for limiting the position of the rotary disk 13. The rollers 14 are rotatably mounted to the base housing 11. The buffer hook 151 is mounted to the base frame 12. The rotation mechanism 103 is provided inside the base housing 11. The base 101 and its internal components together form the base unit 10. Specifically, the base mechanism 10 includes: a base housing 11, a base frame 12, a rotary disk 13, and a plurality of rollers 14 for supporting the rotary disk 13. The rotary disk 13 is rotatable relative to the base housing 11 by means of rollers 14.

In a preferred embodiment, a plurality of rollers 14 are arranged in a ring around the axis of rotation of the rotating disk 13. The rotational axis of the roller 14 intersects the rotational axis of the rotating disk 13.

The radius of the rotary disk 13 is not less than 110mm and not more than 150 mm. Specifically, the radius of the rotating disk 13 is 120mm or more and 140mm or less. More specifically, the radius of the rotating disk 13 is 125mm or more and 135mm or less. As a specific embodiment, the radius of the rotating disk 13 may be set to 132mm or 130 mm. The difference between the radius of the rotating disc 13 and the radius of the annular arrangement of the plurality of rollers 14 is 15mm or less. The radius of the annular arrangement of the plurality of rollers 14 is smaller than the radius of the rotating disc 13. The bottom of the base housing 11 defines a horizontal reference plane 1001. The horizontal reference plane 1001 is a reference plane on which the base housing 11 is placed. The rotating disk 13 is disposed obliquely to the horizontal reference surface 1001. Specifically, an angle β 1 between the rotation axis of the rotary disk 13 and the horizontal reference surface 1001 is 76 degrees or more and 80 degrees or less. As a specific embodiment, the angle β 1 between the rotation axis of rotating disk 13 and horizontal reference plane 1001 may be set to 78 degrees. The shock resistance, especially the forward shock resistance, can be effectively improved by setting the inclination angle of the rotating disk 13, and the forward tilting possibility is reduced when the rotating disk is subjected to backward impact force.

An angle β 2 between the rotary disk 13 and the horizontal reference surface 1001 is 10 degrees or more and 15 degrees or less. The minimum distance from any point on the rotating disk 13 to the horizontal reference surface 1001 is 20mm or more and 40mm or less. It is preferable that rotation plate 13 is set to have an angle β 2 of 12 degrees with respect to horizontal reference surface 1001. At this time, the angle β 1 between the rotation axis of the corresponding rotating disk 13 and the horizontal reference surface 1001 is 78 degrees. The minimum distance from any point on rotary disk 13 to horizontal reference surface 1001 is 25mm or more and 35mm or less. The height of the front end of rotating disk 13 is lower than the height of the rear end, at which time the minimum distance from horizontal reference plane 1001 on rotating disk 13 and the distance from the front end of rotating disk 13 to horizontal reference plane 1001. The shock resistance, especially the forward shock resistance, can be effectively improved by setting the inclination angle of the rotating disk 13, and the forward tilting possibility is reduced when the rotating disk is subjected to the backward impact force.

The rotating disk 13 is disposed obliquely to the horizontal reference surface 1001. The height from the front end of the rotating disk 13 to the horizontal reference surface 1001 is 20mm or more and 40mm or less. The height from the rear end of the rotating disk 13 to the horizontal reference surface 1001 is 70mm or more and 100mm or less. Specifically, the height from the front end of the rotating disk 13 to the horizontal reference surface 1001 is 25mm or more and 35mm or less. The height from the rear end of the rotating disk 13 to the horizontal reference surface 1001 is 70mm or more and 90mm or less. The center of gravity can be effectively lowered and the structure can be made compact by the height setting of both ends of the rotating disk 13 and the size setting of the rotating disk 13. Stability is improved by lowering the center of gravity, and the impact resistance is further improved.

The base housing 11 includes: a lower seat shell 111 and an upper seat cover 112. The lower seat shell 111 and the upper seat cover 112 are integrally formed. Specifically, the lower seat shell 111 is integrally formed as one piece by molding. Upper seat cover 112 is also integrally formed as a single piece by molding. The upper seat cover 112 is fixed to the lower seat case 111.

In a preferred embodiment, the base frame 12 is formed by welding a plurality of metal tubes into a whole. The base frame 12 is disposed in the base housing 11 and fixed to the lower seat shell 111. The base frame 12 serves to increase strength. At least a portion of the metal tube of chassis frame 12 is disposed parallel to horizontal reference plane 1001. The pedestal frame 12 is horizontally arranged to improve the supporting capability and improve the impact resistance.

The base housing 11 is formed with a plurality of support columns 1113 for mounting the rollers 14. The number of support columns 1113 is equal to the number of rollers 14. Specifically, a plurality of support columns 1113 for mounting the rollers 14 are formed inside the lower seat case 111. The top of the support column 1113 forms a mounting slot for mounting the roller 14. The roller 14 is rotatably disposed in the mounting groove. The roller 14 contacts the bottom of the rotating disk 13 to support the rotating disk 13. The outer ring of the rotating disk 13 protrudes downward to form an annular track surface which the roller 14 contacts. The width of the endless track surface is greater than 1 times the width of the roller 14 and less than 3 times the width of the roller 14. The width of the circular track surface is set to ensure the stability of the contact of the roller 14 with the rotating disk 13.

At least part of the supporting columns 1113 are formed with a limiting bump 1114 protruding upwards on the top for limiting the rotation disc 13. The stop bumps 1114 may be formed on top of portions of the support posts 1113. The top of all the support columns 1113 may be formed with the limiting bumps 1114. A plurality of limit bumps 1114 are provided on the outer periphery of the rotating disk 13. The plurality of limit protrusions 1114 together limit the position of the rotary disk 13, and position the rotary disk 13 so that the rotary disk 13 cannot radially run but only circumferentially rotates.

As a preferred embodiment, the lower seat shell 111 includes: a bottom plate portion 1111 and a fence portion 1112 extending upward from an outer edge of the bottom plate portion 1111. The rear end of the surrounding wall portion 1112 gradually rises in height from the front to the rear. The upper seat cover 112 covers the top of the enclosure portion 1112 so that the upper seat cover 112 and the enclosure portion 1112 together form the backrest structure 110.

Compared with the traditional mode of independently arranging the backrest structure and then installing the backrest structure on the base, the base mechanism 10 has the advantages that the lower seat shell 111 and the upper seat cover 112 are integrally formed, the backrest structure 110 is formed by the lower seat shell 111 and the upper seat cover 112, and the structural strength is high and the impact resistance is strong.

In a preferred embodiment, the outer edge of the rotating disk 13 is formed with an annular protrusion 131 protruding upward. The rotating disk 13 is formed with a ring groove 132. The annular protrusion 131 constitutes an outer groove wall of the ring groove 132. The upper seat cover 112 forms an exposure hole 1121 through which the rotation disk 13 is exposed. The opening of the exposed hole 1121 extends downward to form an annular rib 1122. The annular rib 1122 extends into the annular groove 132. The annular convex rib 1122 is matched with the annular groove 132, and plays an auxiliary buffering role under the action of strong impact.

As a preferred embodiment, a base mechanism 10 further includes: and a buffer mechanism 15. The damper mechanism 15 includes: a plurality of buffer hooks 151. The buffer hook 151 is fixed to the base frame 12. The annular protrusion 131 is inserted into the buffer hook 151 and engaged with the buffer hook 151 to be restricted. The top of the buffer hook 151 is inserted into the buffer hook 151. The top of the buffer hook 151 is located above the rotating disk 13. The bottom of the buffer hook 151 is fixed to the base frame 12. The end of the buffer hook 151 is provided with a guard 152. Specifically, the guard 152 is a buffer. The protector 152 is mounted to the hook portion of the buffer hook 151 to prevent the buffer hook 151 from directly contacting the annular protrusion 131. Specifically, the end of the buffer hook 151 is inserted into the shielding member 152 to be wrapped by the shielding member 152. The guard 152 may be provided as a pom piece. The guard 152 is made of a pom material and has high wear resistance and self-lubrication. Under the condition that the impact force is small, the vibration is reduced, and the noise is reduced. It can be understood that the roller 14, the damping sleeve 223 and the locking pin 172 are made of pom materials, and have excellent wear resistance and self-lubrication, so that the better noise reduction performance of the children's chair is ensured when in use.

As a preferred embodiment, a base mechanism 10 further includes: for assisting in supporting the ring member 16 of the rotary disk 13. The ring member 16 is located below the rotating disk 13 and the ring member 16 is fixed to the lower seat shell 111. A base mechanism 10 further comprising: a rotation locking mechanism 17 for locking the position of the rotary disk 13 relative to the base housing 11. The rotation lock mechanism 17 includes: a locking seat 171 and a locking pin 172. The lock seat 171 is fixed to the rotary plate 13. The locking pin 172 is movably mounted to the locking seat 171. The ring member 16 is provided with a pin hole into which the locking pin 172 is inserted. The locking pin 172 has a locked position and an unlocked position with respect to the locking seat 171. In the locked position, the locking pin 172 is inserted into the pin hole. In the unlocked position, the locking pin 172 is withdrawn from the pin hole. The movement of the locking pin may be achieved by pulling directly on the locking pin. Locking and unlocking of the locking pin 172 may also be accomplished by movement of the operator in a ramp conventional manner to move the locking pin 172. A return spring may be provided to urge the locking pin 172 from the unlocked position to the locked position.

In a preferred embodiment, a portion of the base frame 12 defines a rectangular space. Four angles in the rectangular space are all provided with support columns 1113. Support column 1113 and the cooperation of base skeleton 12 can assist the installation location of base skeleton 12, can promote shock resistance again under strong impact.

As a preferred embodiment, the base chassis 12 includes: connecting tube 121 and two side tube groups. The side tube group includes: a front curved tube 122 and a rear straight tube 123. The front curved tube 122 is welded to the rear straight tube 123. The rear straight pipe 123 is welded to the connection pipe 121. Front bend 122 is formed by a straight tube bent 90 degrees. Specifically, the front bent pipe 122 and the rear straight pipe 123, and the rear straight pipe 123 and the connection pipe 121 all form a right-angle structure, and a rectangular structure is enclosed between the four right-angle structures.

As a preferred embodiment, the buffer hook 151 is fixed to each of the front bent pipe 122 and the connection pipe 121. A buffer hook 151 fixed to the front bent pipe 122 is located on the front side of the rotary disk 13. A buffer hook 151 fixed to the connection pipe 121 is located at the rear side of the rotation plate 13. The impact resistance in the front-rear direction is enhanced. The buffer hook 151 directly fixed to the base frame 12 has a good impact resistance. The height of the front end of the rotating disk 13 is lower than the height of the rear end of the rotating disk 13. The number of buffer hooks 151 at the rear side of the rotating disk 13 is greater than the number of buffer hooks 151 at the front side of the rotating disk 13.

As a preferred embodiment, the buffer hook 151 fixed to the front bent pipe 122 is simultaneously fixed to the base housing 11 by means of a screw connection. The rotary plate 13 is stamped downward with a plurality of reinforcing ribs. The plurality of reinforcement cavities are symmetrically disposed at the front and rear ends of the rotating disk 13. The structural strength is high, and the security is high.

The buffer hook 151 and the rotating disk 13 are each made of a metal plate-like material. The ratio of the thickness of the metal plate material of the buffer hook 151 to the thickness of the metal plate material of the rotating disk 13 is 1.5 or more and 2 or less. The width of the buffer hook 151 is not less than 20mm and not more than 40 mm. Specifically, the width of the buffer hook 151 is 25mm or more and 35mm or less. The structural arrangement of the buffer hook 151 effectively ensures the impact resistance, and improves the impact resistance, thereby improving the safety performance.

In a preferred embodiment, the front bent pipe 122, the rear straight pipe 123 and the connection pipe 121 are all metal pipes. The metal pipe can be a square pipe or a special pipe. As an alternative embodiment, the front bent pipe, the rear straight pipe and the connecting pipe can also be provided as round pipes or other shaped pipe fittings. When the metal square tube is adopted to be welded compared with a circular tube structure, insufficient welding is not prone to occurring, and bolt connection is facilitated. Both ends of the connection pipe 121 are bent downward to form an inverted U-shape. The square tube structure realizes the surface-to-surface lamination and improves the welding reliability.

As a preferred embodiment, the child seat 100 further includes: a swivel 124 and a set of support legs 125. Swivel mount 124 is affixed to base frame 12. Specifically, the base mechanism 10 further includes: a swivel 124 and a set of support legs 125. Swivel mounts 124 are affixed to the two front elbows 122. The swivel mount 124 is made of a metal plate-like material. The support leg set 125 is rotatably connected to the swivel base 124. The bottom of the base housing 11 is recessed upwardly to form a recess 1115. The recess 1115 forms a support leg slot that opens downward for receiving the support leg set 125. The supporting leg group 125 is accommodated to the bottom of the base housing 11 in a rotating manner, and occupies a small space. The top of recess 1115 forms a stopper 1116 for restraining the front end of rotating disk 13. The stopper 1116 is located on the front side of the rotating disk 13. The stops 1116 may enhance impact resistance. The support leg assemblies 125 may be provided with position indication modules to indicate the position of the support leg assemblies 125 to ensure that the support leg assemblies 125 reach an open position. Specifically, the position of the support leg group 125 can be ensured by a red-green color display. The support member 125 is colored green when it reaches the open position and red when it does not reach the open position.

As a preferred embodiment, the child seat 100 further includes: and connecting the sliding rod. The connecting slide rod is slidably disposed in the rear straight tube 123, and the connecting slide rod and the rear straight tube 123 form a telescopic rod structure. The connecting slide bar may be secured in cooperation with a locking structure on the vehicle to secure the child seat 100 to the vehicle with greater safety than if the child seat were to be swung into place on the vehicle seat.

As a preferred embodiment, the seat body 102 includes: a seat shell 21, a seat mount 22, and a seat reinforcement 23. The seat body mount 22 is mounted to the base 101 through the rotation mechanism 103. The seat body reinforcing frame 23 is movably mounted to the seat body mounting frame 22. The seat shell 21 is fixed to a seat reinforcing frame 23. The seat body reinforcing frame 23 serves to increase the strength of the seat body housing 21.

The position of the seat body housing 21 can be adjusted by adjusting the position of the seat body reinforcing frame 23 with respect to the seat body mounting frame 22. Specifically, the seat body mount 22 is fixed to the rotating plate 13. The seat body reinforcing frame 23 includes: two elbow pipes 231 and several elbow links. In one embodiment, the body frame 23 is provided with two elbow links. Both ends of the elbow link are fixed to two elbows 231. The two elbow links are defined as elbow lower link 232 and elbow middle link 233, respectively. That is, the seat body reinforcing frame 23 includes: two elbows 231, an elbow lower link 232, and an elbow middle link 233. Both ends of the elbow lower link 232 are fixed to the bottom ends of the two elbows 231. Both ends of elbow mid-link 233 are fixed to both elbows 231 and the tops of both elbows 231 extend upward beyond elbow mid-link 233. The seat body 102 further includes: an auxiliary reinforcing bar 234 for increasing strength. The auxiliary reinforcement bar 234 is fixed to the seat body shell 21 and the auxiliary reinforcement bar 234 is located above the bent pipe middle link 233. The auxiliary stiffener 234 is parallel to the elbow mid-link 233 and the elbow lower link 232. The bent pipe 231 is formed by bending a metal pipe, and specifically, the bent pipe 231 is formed by bending a metal square pipe. The extending directions of both ends of the bent pipe 231 are perpendicular to each other. The structural strength of the chair body can be improved by the auxiliary reinforcing rod 234, so that the impact resistance and the safety are improved.

In one embodiment, the auxiliary stiffener 234, the elbow mid-link 233, and the elbow lower link 232 are arranged in an obtuse triangle.

The tops of the bent tubes 231 are parallel to each other and extend linearly. The tops of the two bent tubes 231 constitute a plane. The plane formed by the auxiliary reinforcement bar 234 and the elbow mid-link 233 is parallel to the plane formed by the tops of the two elbows 231. Alternatively, the auxiliary reinforcement bar 234 and the elbow center link 233 are located in the same plane a, and the tops of the two elbows 231 are located in the same plane B, which are parallel to each other.

In one embodiment, the elbow middle link 233 and the elbow lower link 232 are located on the same side of the elbow 231. Elbow mid link 233 and elbow lower link 232 are located outside the arc formed by elbow 231. More specifically, the elbow lower link 232 is disposed below the front end of the elbow 231. Elbow mid-link 233 is disposed rearward of the rear end of elbow 231. The front end of the bent pipe 231 is disposed perpendicular to the rear end of the bent pipe 231. Elbow mid link 233 and elbow lower link 232 are identical in structure.

In a specific embodiment, the length of the auxiliary reinforcement bar 234 is equal to or greater than the distance between the two bent tubes 231 and is smaller than the width of the seat body 102. The length of the auxiliary reinforcement bar 234 is less than the length of the tie rods 233 in the elbow.

The child seat 100 also includes a head rest 104. The head rest 104 protects the child's head. The head rest 104 is slidably mounted to the seat body 102 for height adjustment. The child seat 100 further includes: the head rest is connected to the reinforcing plate 45. The lower end of the head rest connection reinforcement plate 45 is fixed to the seat body reinforcement frame 23. The upper end of the head rest attachment reinforcement plate 45 is fixed to the seat body housing 21. The head rest 104 is provided with a slide 46. A chute is formed between the head support connection reinforcing plate 45 and the seat body housing 21. The slide 46 slides within the slide channel. The longitudinal direction of the slide bar 46 is parallel to the longitudinal direction of the head rest connection reinforcing plate 45. The head rest connection reinforcing plate 45 functions as a slide rail, and can improve the strength of the joint of the head rest 104 and the chair body 102. The head rest 104 does not protect well against separation from the seat body 102 during a large impact.

As a preferred embodiment, the lower end of the head support connection reinforcing plate 45, the seat body reinforcing frame 23 and the seat body shell 21 are fixed as a single body by bolting. The head rest connection reinforcing plate 45 has high reliability in the connection mode. In one embodiment, the number of the slider 46 and the head rest attachment reinforcing plate 45 is two.

As a preferred embodiment, the head rest 104 includes: a head guard portion 41 for protecting the head, a slider portion 42, and a neck portion 43 connecting the head guard portion 41 and the slider portion 42. The slide seat portion 42 forms a slide bar 46. The child seat 100 further includes: a head rest neck stiffener 431. A head rest neck reinforcement panel 431 is fixed to the neck 43. The head rest neck reinforcement panel 431 may increase the strength of the neck 43. As a specific embodiment, the number of the head rest neck reinforcing plates 431 is two. Two head rest neck reinforcing plates 431 are fixed to both ends of the neck 43, respectively. As a specific embodiment, the head rest neck reinforcement plate 431 extends in the longitudinal direction from the slider portion 42 to the toe guard portion 41. The longitudinal direction of the head rest neck reinforcement plate 431 is parallel to the longitudinal direction of the head rest connection reinforcement plate 45.

As a preferred embodiment, the head rest 104 further includes: a back plate 44. The back plate 44 is fixed to the slider portion 42. A guide groove is formed between the back plate 44 and the slider portion 42. The seat body housing 21 is formed with a guide bar 47. The guide bar 47 slides in the guide groove. The number of the guide grooves and the guide strips 47 is two. The back plate 44 and the head rest attachment reinforcing plate 45 raise the strength of the head rest 104 from both sides, and improve the handling of forward and backward impact forces. The head rest connection reinforcing plate 45 is arranged to lift the stroke of the head rest 104. The height-adjusting pin grooves 48 are formed directly by the guide bars 47, and the intervals of the height-adjusting pin grooves 48 can be narrowed, thereby making the gear-position adjustment interval small. The shoulder strap cushioning strap is fixed to the head rest 104 and moves with the head rest 104, thereby avoiding affecting the adjustment of the head rest 104.

The back plate 44 slidably mounts a height adjustment latch. The guide bar 47 is formed with a plurality of height adjustment pin grooves 48 that cooperate with the height adjustment lock pins to adjust the height of the head rest 104 relative to the seat body 102. Different height locking may be achieved by inserting the height adjustment locking pin into different height adjustment pin slots 48. The sliding connection structure of the head support 104 can effectively avoid front and back looseness, left and right looseness and swinging, and has high stability.

The child seat 100 is also provided with an unlocking mechanism 105 for unlocking the rotation locking mechanism 17 so that the seat body 102 can be rotated relative to the base 101. The key-division linkage control can be realized by the unlocking mechanism 105. Specifically, the rotation lock mechanism 17 includes: a locking seat 171, a locking pin 172 for being inserted into the base 101 to lock the rotational position of the rotary disk 13, a slider 173 for driving the movement of the locking pin 172, and a slider return spring for returning the slider 173. The lock seat 171 is fixed to the rotary plate 13. The locking pin 172 is movably mounted to the locking seat 171. The slider 173 is slidably mounted to the lock seat 171. The slider 173 is provided with a diagonal slot for movement of the wire locking pin 172. The linear movement of the slider 173 with respect to the lock seat 171 is converted into a movement of the locking pin 172 with respect to the lock seat 171 in the other direction by means of a bevel transmission of the chute. Specifically, the moving direction of the locking pin 172 with respect to the locking seat 171 is perpendicular to the moving direction of the slider 173 with respect to the locking seat 171. The locking or unlocking may be achieved by operating the slider 173 to move the locking pin 172. And the slider return spring returns the moved slider 173.

The rotational locking mechanism may be provided in different configurations as desired. It is also possible to convert the linear movement of the slider relative to the locking seat into a movement of the locking pin in the other direction relative to the locking seat by means of a bevel drive of the chute. For example, the movement of the locking pin relative to the locking seat may be a movement in a horizontal direction or a movement in a height direction. The rotary locking mechanism realizes the locking of the relative position of the rotary disk and the base, and can be arranged on the rotary disk or on the base as required.

As another specific embodiment, the rotation lock mechanism 17a includes: a locking seat 171a, a locking pin 172a, a slider 173a for driving the locking pin 172 to move, and a slider return spring 174a for returning the slider 173 a. The lock seat 171a is fixed to the base 101. The locking pin 172a is movably mounted to the locking seat 171 a. The slider 173a is slidably mounted to the lock seat 171 a. The slider 173a is provided with an inclined groove in which the wire locking pin 172a moves. The rectilinear motion of the slider 173a with respect to the locking seat 171a is converted into a motion of the locking pin 172a in the other direction with respect to the locking seat 171a by means of a bevel transmission of the chute. Specifically, the moving direction of the locking pin 172a with respect to the locking seat 171a is perpendicular to the moving direction of the slider 173a with respect to the locking seat 171 a. The locking or unlocking may be achieved by operating the slider 173a to move the locking pin 172 a. And slider return spring 174a returns the moved slider 173 a. The locking pin 172a is used to be inserted into the rotary disk 13 to lock the rotational position of the rotary disk 13. Specifically, the locking pin 172a may be inserted into the rotary plate 13 after moving upward to lock the rotary plate 13. The locking pin 172a can be withdrawn from the rotary disk 13 after moving downward to unlock the rotary disk 13. The number of the unlocking mechanisms 105 is two. The unlocking mechanism 105 includes: a button member 51 to be pressed by a user, a swinging member 52, a wire rope, a transmission link member 53, a position indicator 54, and an indicator return spring 55 for returning the position indicator 54. One end of the wire rope is connected to the oscillating member 52 so as to transmit force when the oscillating member 52 rotates. The two wire ropes of the two unlocking mechanisms 105 are connected to the same slider 173a at the same time. Two unlocking mechanisms 105 are provided on both sides of the base 101. The position of the slider 173a can be controlled by any one of the unlocking mechanisms 105 to unlock and lock the rotation locking mechanism 17 a.

The button member 51 is pushed to rotate the swinging member 52. Both ends of the wire rope are connected to the swinging member 52 and the sliding member 173a, respectively, so that the sliding member 173a is moved by the movement of the swinging member 52.

The transmission link member 53 connects the position indicator 54 and the swinging member 52, and when the swinging member 52 is pushed to rotate by the button member 51, the transmission link member 53 pushes the position indicator 54 to rotate against the urging force of the indicator return spring 55. The position indicator 54 is provided with an indicator indicating the state of the unlocking mechanism 105. After the push button 51 is stopped being pressed, the position indicator 54 is rotated by the urging force of the indicator return spring 55 to be returned. The indicator marks include a first mark indicating that the unlocking mechanism 105 is unlocked and a second mark indicating that the unlocking mechanism 105 is not unlocked. The base 101 is provided with a window 1123 through which the indication mark is exposed. After the button piece 51 is pressed, the first indicia is aligned with the window 1123. When the button piece 51 is not pressed, the second indicia is aligned with the window 1123. As a specific embodiment, the first and second indicia are different colors. The unlocked state and the locked state can be distinguished by red and green, for example. The position indicator 54 has an unlocked indicating position and a locked indicating position. When the position indicator 54 is in the unlock indicating position, the first indicia is aligned with the window 1123. When the position indicator 54 is in the lock indicating position, the second indicia is aligned with the window 1123. The transmission link member 53 connects the position indicating member 54 and the swinging member 52, and when the swinging member 52 is pushed to rotate by the button member 51, the transmission link member 53 pushes the position indicating member 54 to rotate against the urging force of the indicating member return spring 55 to move from the lock indicating position to the unlock indicating position. After the push button member 51 is stopped being pressed, the position indicating member 54 is rotationally moved from the unlock indicating position to the lock indicating position by the urging force of the indicating member return spring 55, and the position indicating member 54 pushes the swinging member 52 to return through the transmission link member 53. The window 1123 is oriented in parallel with the pressing direction of the button member 51. When the user presses the button member 51, the indication mark can be simultaneously observed through the window 1123 to know the current state and the operated state. Specifically, the pressing direction of the button member 51 is from top to bottom.

As a specific embodiment, the unlocking mechanism 105 further includes: unlocking the base 56. The unlocking base 56 is fixed to the base 101. The swinging member 52 and the position indicating member 54 are both rotatably mounted to the unlocking base 56. The axes of rotation of the oscillating member 52 and the position indicator 54 are parallel to each other. The steel wire pull rope is provided with a steel wire sleeve. One end of the wire sleeve is fixed to the unlocking base 56. The other end of the wire sleeve is fixed to the locking seat 171. Indicator return spring 55 is a torsion spring. The button member 51 is formed with an abutment lever for urging the swinging member 52 to rotate. The abutting lever abuts against the swinging member 52. The unlocking mechanism 105 also includes a pendulum return spring. The swing return spring is sleeved on the wire rope, and both ends of the swing return spring abut against the swing member 52 and the unlocking base 56, respectively.

In a preferred embodiment, the seat body mount 22 is provided with link runners 222 through which the elbow links pass and guide the sliding motion of the elbow links. The seat frame 22 is provided with a shock-absorbing bushing 223 that prevents the elbow link from directly contacting the seat frame 22. The damping sleeve 223 is annularly disposed in the connecting rod sliding groove 222 and wraps a groove wall of the connecting rod sliding groove 222. The elbow linkage passes through a shock sleeve 223.

As a specific embodiment, the seat mount 22 includes two mounting plates 221. The mounting plate 221 is fixed to the rotating disk 13. The elbow linkage passes through both mounting plates 221 simultaneously. The two mounting plates 221 are arranged in parallel. Specifically, the mounting plate 221 is provided with a link chute 222 through which the elbow link passes and which guides the elbow link to slide. The damping sleeve 223 is provided with a hook structure, and the damping sleeve 223 is fixed to the mounting plate 221 through the hook structure. Each mounting plate 221 is formed with a plurality of link sliding grooves 222. Each mounting plate 221 defines the same number of link runners 222 as the number of elbow links.

As a specific implementation mode, the position locking and unlocking of the chair body reinforcing frame and the chair body mounting frame can be realized by arranging the reinforcing frame control mechanism. The cradle control mechanism may be configured in the same unlocking and control manner as the head rest adjustment. As an alternative embodiment, the reinforcing frame control mechanism, the rotation locking mechanism for locking the rotating disk, and the unlocking mechanism may be set in different manners as required, and may be in a one-key rotation manner or a key-division rotation manner.

As a specific implementation mode, the child seat further comprises shoulder straps which are directly connected with the neck 43 and are self-adaptive to adjust, so that the movement of the head rest is not limited by the installation of the shoulder straps, the adjustment of the head rest is not influenced, the adjustment of the large stroke of the head rest is ensured, and the child seat can be used by children of different ages.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims (10)

1. A base mechanism, comprising: the rotary table comprises a base shell, a base framework, a rotary disc and a plurality of rollers for supporting the rotary disc; the base housing includes: a lower seat shell and an upper seat cover; the lower seat shell and the upper seat cover are integrally formed; the upper seat cover is fixed to the lower seat shell; the base framework is formed by welding a plurality of metal pipes into a whole; the base framework is arranged in the base shell and fixed to the lower base shell; a plurality of supporting columns for mounting the rollers are formed in the lower seat shell; at least part of the top of the supporting column protrudes upwards to form a limiting bump for limiting the rotating disc; the plurality of limiting lugs are arranged on the periphery of the rotating disc; a part of the base framework forms a rectangular space; four angles in the rectangular space are provided with the supporting columns.

2. The base unit of claim 1,

the outer edge of the rotating disc is upwards protruded to form an annular convex part.

3. A base unit as claimed in claim 2,

the rotating disc is provided with a ring groove; the annular convex part forms an outer groove wall of the ring groove; the upper seat cover forms an exposed hole for exposing the rotating disc; the hole opening of the exposed hole extends downwards to form an annular convex rib; the annular convex rib extends into the annular groove.

4. A base unit as claimed in claim 2,

the base mechanism further comprises: a buffer mechanism; the buffer mechanism includes: a plurality of buffer hooks; the buffer hook is fixed to the base framework; the annular convex part is inserted into the buffer hook; the end of the buffer hook is provided with a protection part.

5. The base unit of claim 1,

the base mechanism further comprises: a ring member for assisting in supporting the rotating disk; the ring member is located below the rotating disk and is fixed to the lower seat shell.

6. A base unit as claimed in claim 5,

the base mechanism further comprises: a rotation locking mechanism for locking the position of the rotary plate relative to the base housing; the rotation locking mechanism includes: a rotating seat and a locking pin; the rotating seat is fixed to the rotating disc; the locking pin is movably mounted to the rotating seat; the circular ring piece is provided with a pin hole for inserting the locking pin; the locking pin has a locked position and an unlocked position relative to the rotating seat; the locking pin is inserted into the pin hole when in the locking position; in the unlocked position, the locking pin is withdrawn from the pin hole.

7. A base unit as claimed in claim 4,

the base skeleton includes: the connecting pipe and the two side pipe groups; the side tube group includes: a front bent pipe and a rear straight pipe; the front bent pipe is welded to the rear straight pipe; the rear straight tube is welded to the connecting tube.

8. A base unit as claimed in claim 7,

the front bent pipe and the connecting pipe are both fixed with the buffer hooks; the buffer hook fixed by the front bent pipe is positioned on the front side of the rotating disc; the buffer hook fixed by the connecting pipe is positioned at the rear side of the rotating disc.

9. A base unit as claimed in claim 7,

the base mechanism further comprises: a swivel mount and a support leg set; the swivel mount is fixed to both of the front elbows; the supporting leg group is rotatably connected to the rotary seat.

10. A child seat, comprising: a chair body and a base unit as claimed in any one of claims 1 to 9; the chair body is mounted to the swivel plate.

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