CN114162004B - Child seat controlled by split-key linkage - Google Patents

Abstract

The invention relates to a child seat controlled by split linkage, comprising: the seat comprises a base, a seat body, a rotating mechanism for enabling the seat body to be rotatably mounted to the base, a rotating locking mechanism for locking the position of the seat body relative to the base and an unlocking mechanism for unlocking the rotating locking mechanism so that the seat body can rotate relative to the base; the rotating mechanism comprises: a rotating disc; the rotating disk is rotatably mounted to the base; the chair body is mounted to the rotary disk; the unlocking mechanism comprises: the device comprises a button piece for being pressed by a user, a swinging piece, a steel wire stay cord, a transmission connecting piece, a position indicating piece and an indicating piece reset spring for resetting the position indicating piece; the transmission connecting piece is connected with the position indicating piece and the swinging piece, and when the swinging piece is pushed to rotate by the button piece, the transmission connecting piece pushes the position indicating piece to rotate against the acting force of the indicating piece reset spring. The unlocking can be realized only by pressing, and the unlocking can be realized by pressing any button piece of the unlocking mechanisms at two sides.

Description

Child seat controlled by split-key linkage

Technical Field

The invention relates to a child seat, in particular to a child seat controlled by split linkage.

Background

Safety facilities such as safety belts and safety airbags arranged on the existing automobile are designed according to the standards of adults and cannot be suitable for children, in real life, the children often need to follow adults to sit in the automobile, the safety facilities on the automobile cannot be suitable for the children, and potential safety hazards exist when the children sit on the automobile.

At present, aiming at the potential safety hazard of a child riding automobile, a child safety seat is designed, the child safety seat is arranged on the automobile, the child riding automobile travel safety device is provided with a restraint function for the child riding, and the child safety seat is used for protecting the life safety of the child when the automobile is in traffic accidents, so that the impact resistance of the child safety seat is good to protect the life safety of the child, and the child safety seat on the market can be put into the market for use only by the test of the child safety seat collision regulation.

The chair body of the child seat can rotate relative to the base so as to adjust the orientation of the chair body, and unlocking is achieved through the unlocking mechanism. But the conventional unlocking mechanism is inconvenient to operate.

Disclosure of Invention

The present invention is directed to a child seat that solves the above-mentioned problems with the prior art.

In order to achieve the above purpose, the present invention provides the following technical solutions:

a split linkage controlled child seat comprising: the seat comprises a base, a seat body, a rotating mechanism for enabling the seat body to be rotatably mounted to the base, a rotating locking mechanism for locking the position of the seat body relative to the base and an unlocking mechanism for unlocking the rotating locking mechanism so that the seat body can rotate relative to the base;

the rotating mechanism comprises: a rotating disc; the rotating disk is rotatably mounted to the base; the chair body is mounted to the rotary disk; the rotation lock mechanism includes: the rotary seat, the locking pin used for inserting into the base to lock the rotary position of the rotary disk, the sliding piece used for driving the locking pin to move and the sliding piece reset spring used for resetting the sliding piece; the rotating seat is fixed to the rotating disc; the locking pin is movably mounted to the rotating seat; the sliding piece is slidably mounted to the rotating seat;

the unlocking mechanism comprises: the device comprises a button piece for being pressed by a user, a swinging piece, a steel wire stay cord, a transmission connecting piece, a position indicating piece and an indicating piece reset spring for resetting the position indicating piece; the button piece is pushed to push the swinging piece to rotate after being pressed; two ends of the steel wire stay cord are respectively connected with the swinging piece and the sliding piece, so that the swinging piece moves to drive the sliding piece to move;

the transmission connecting piece is connected with the position indicating piece and the swinging piece, and when the swinging piece is pushed to rotate by the button piece, the transmission connecting piece pushes the position indicating piece to rotate against the acting force of the indicating piece reset spring; the position indicator is provided with an indication mark for indicating the state of the unlocking mechanism.

As a further scheme of the invention: after the button piece is stopped to be pressed, the acting force of the indicator reset spring drives the position indicator to rotate to reset.

As a further scheme of the invention: the indication mark comprises a first mark for indicating that the unlocking mechanism is unlocked and a second mark for indicating that the unlocking mechanism is not unlocked; the base is provided with a window for exposing the indication mark; after the button member is pressed, the first mark aligns with the window; the second indicia is aligned with the window when the button member is not depressed.

As a further scheme of the invention: the first logo and the second logo are different in color.

As a further scheme of the invention: the window is oriented parallel to the pressing direction of the button member.

As a further scheme of the invention: the unlocking mechanism further comprises: unlocking the base; the unlocking base is fixed to the base; the swing member and the position indicator member are both rotatably mounted to the unlocking base.

As a further scheme of the invention: the steel wire stay rope is provided with a steel wire sleeve; one end of the wire sleeve is fixed to the unlocking base.

As a further scheme of the invention: the indicator return spring is a torsion spring; the button piece is provided with a supporting rod for pushing the swinging piece to rotate; the abutting rod abuts against the swinging piece.

As a further scheme of the invention: the number of the unlocking mechanisms is two; two wire ropes of two unlocking mechanisms are simultaneously connected to the same sliding piece.

As a further scheme of the invention: the two unlocking mechanisms are arranged on two sides of the base.

Compared with the prior art, the invention has the beneficial effects that: the operation is convenient. The unlocking can be realized only by pressing. And the unlocking can be realized by pressing the button piece of any one of the unlocking mechanisms at the two sides.

Impact resistance is effectively improved through the arrangement of the rotating disc, particularly forward impact resistance can be effectively improved, and the possibility of forward tilting is reduced when backward impact force is applied.

Has better impact resistance and high safety.

The structural arrangement of the support column can play a role in enhancing the impact resistance. The structural arrangement of the lower housing and the upper housing has higher strength and enhanced impact resistance than the conventional plate-shaped lower housing in which the raised upper housing is mounted.

Drawings

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

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

FIG. 3 is a perspective view of the base unit of FIG. 2 from another perspective;

FIG. 4 is a plan view of the base unit of FIG. 2;

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

FIG. 6 is an exploded view of the base unit of FIG. 2;

FIG. 7 is a schematic view of the base unit of FIG. 1 with the upper cover removed;

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

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

FIG. 10 is a schematic view of a rotating disk and rotation locking mechanism of the base mechanism of FIG. 1;

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

FIG. 12 is a schematic view of a rotating disk and upper seat 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 view of a portion of the structure of FIG. 13;

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

FIG. 16 is a top view of the rotational locking 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 a locking pin and slider 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 unlocking base removed;

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

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

FIG. 23 is a schematic side 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 an inner metal frame of the child seat of FIG. 1;

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

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

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

Child seat 100, base 101, body 102, swivel mechanism 103, head rest 104, unlocking mechanism 105, horizontal reference surface 1001;

base mechanism 10, base housing 11, lower base housing 111, bottom plate portion 1111, fence portion 1112, support column 1113, stopper 1114, recess 1115, stopper 1116, upper base cover 112, open hole 1121, annular bead 1122, window 1123, backrest structure 110, base frame 12, connection pipe 121, front elbow 122, rear straight pipe 123, swivel mount 124, support leg group 125, swivel disk 13, annular bead 131, annular groove 132, roller 14, buffer mechanism 15, buffer hook 151, guard 152, annular member 16, swivel locking mechanism (17, 17 a), locking seat (171, 171 a), locking pin (172, 172 a), slider (173, 173 a), slider return spring 174a;

the seat body shell 21, the seat body mounting frame 22, the mounting plate 221, the connecting rod sliding chute 222, the damping sleeve 223, the seat body reinforcing frame 23, the elbow 231, the elbow lower connecting rod 232, the elbow middle connecting rod 233 and the auxiliary reinforcing rod 234;

head protection part 41, sliding seat part 42, neck part 43, head support neck reinforcing plate 431, back plate 44, head support connection reinforcing plate 45, sliding bar 46, guiding bar 47 and height adjusting pin groove 48;

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

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

As shown in fig. 1 to 28, the child seat 100 includes: a base 101 and a chair body 102. The base 101 functions as a chassis for the child seat 100 to rest on. The chair body 102 is used for children to sit on. The seat 102 is mounted to the base 101. The child seat 100 also includes a swivel mechanism 103. The rotation mechanism 103 rotatably mounts the seat 102 to the base 101. The full-group child seat 100 can be adapted to children of all ages, and can realize the full-group function by adjusting the relative positions of the seat body 102 and the base 101, or maliciously by arranging additional devices on the seat body 102, so as to adapt to children of all ages.

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

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

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

The radius of the rotary disk 13 is 110mm or more and 150mm or less. 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 130mm. The difference between the radius of the rotating disk 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 datum 1001. The horizontal reference surface 1001 is a reference surface on which the base housing 11 is placed. The rotary disk 13 is disposed obliquely to the horizontal reference plane 1001. Specifically, the angle β1 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 β1 of the rotation axis of the rotary disk 13 with respect to the horizontal reference surface 1001 may be set to 78 degrees. Impact resistance, particularly forward impact resistance, can be effectively improved by setting the inclination angle of the rotating disc 13, and the possibility of forward tilting is reduced when a backward impact force is applied.

The angle β2 between the rotating disk 13 and the horizontal reference plane 1001 is 10 degrees or more and 15 degrees or less. The minimum distance from any point on the rotary disk 13 to the horizontal reference surface 1001 is 20mm or more and 40mm or less. It is preferable that the angle β2 between the rotating disk 13 and the horizontal reference surface 1001 is set to 12 degrees. At this time, the angle β1 between the rotation axis of the corresponding rotary disk 13 and the horizontal reference plane 1001 is 78 degrees. The minimum distance from any point on the rotary disk 13 to the horizontal reference surface 1001 is 25mm or more and 35mm or less. The front end height of the rotary disk 13 is lower than the rear end height, and at this time, the minimum distance from the rotary disk 13 to the horizontal reference surface 1001 and the distance from the front end of the rotary disk 13 to the horizontal reference surface 1001 are set. Impact resistance, particularly forward impact resistance, can be effectively improved by setting the inclination angle of the rotating disc 13, and the possibility of forward tilting is reduced when a backward impact force is applied.

The rotary disk 13 is disposed obliquely to the horizontal reference plane 1001. The height from the front end of the rotary disk 13 to the horizontal reference surface 1001 is 20mm or more and 40mm or less. The height from the rear end of the rotary 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 rotary disk 13 to the horizontal reference surface 1001 is 25mm or more and 35mm or less. The height from the rear end of the rotary 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 compactness can be achieved by the height arrangement of the two ends of the rotary disk 13 and the size arrangement of the rotary disk 13. And the stability is improved by reducing the gravity center, so that the shock resistance is further improved.

The base housing 11 includes: a lower housing 111 and an upper cover 112. The lower housing 111 and the upper cover 112 are integrally formed. Specifically, the lower housing 111 is integrally formed as a single body by molding. The 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 shell 111.

As a preferred embodiment, the base skeleton 12 is welded as one piece from several metal tubes. The base frame 12 is disposed within the base housing 11 and is fixed to the lower housing 111. The base frame 12 serves to increase strength. The base skeleton 12 is arranged with at least a portion of the metal tube parallel to the horizontal reference plane 1001. The base frame 12 is horizontally disposed to enhance support and 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 housing 111. The top of the support column 1113 forms a mounting groove for mounting the roller 14. The roller 14 is rotatably disposed in the mounting slot. The roller 14 contacts the bottom of the rotary disk 13 to support the rotary disk 13. The outer ring of the rotating disk 13 protrudes downward to form an annular raceway surface with which the rollers 14 come into contact. The width of the endless track surface is greater than 1 time the width of the roller 14 and less than 3 times the width of the roller 14. The width of the annular track surface ensures the stability of the contact of the roller 14 with the rotating disk 13.

At least part of the support columns 1113 has a top portion protruding upward to form a stopper protrusion 1114 for stopping the rotary disk 13. A limit bump 1114 may be formed on top of a portion of the support column 1113. The limit bump 1114 may be formed on top of all the support columns 1113. A plurality of stopper lugs 1114 are provided on the outer circumference of the rotary disk 13. The plurality of limit lugs 1114 collectively limit the position of the rotary disk 13 and position the rotary disk 13 such that the rotary disk 13 cannot run radially but only rotates circumferentially.

As a preferred embodiment, the lower housing 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 fence portion 1112 gradually rises from the front to the rear. The upper cover 112 covers the top of the wall portion 1112 so that the backrest structure 110 is composed of the upper cover 112 and the wall portion 1112 together.

Compared with the conventional mode of separately providing a backrest structure and then mounting the backrest structure to a base, the base mechanism 10 has the advantages of high structural strength and high impact resistance by forming the backrest structure 110 by the lower seat shell 111 and the upper seat cover 112 and constructing the lower seat shell 111 and the upper seat cover 112 in an integrally formed manner.

As a preferred embodiment, the outer edge of the rotary disk 13 is formed with an annular protrusion 131 protruding upward. The rotary disk 13 is formed with a ring groove 132. The annular projection 131 forms the outer groove wall of the groove 132. The upper cover 112 forms an exposing hole 1121 through which the rotary disk 13 is exposed. The aperture of the open bore 1121 extends downwardly to form an annular bead 1122. The annular bead 1122 extends into the annular groove 132. The annular ribs 1122 are matched with the annular grooves 132, so that an auxiliary buffering effect is achieved under the strong impact effect.

As a preferred embodiment, a base unit 10 further comprises: a buffer mechanism 15. The buffer 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 is engaged by the buffer hook 151 to perform limiting. 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 hook portion of the guard 152 mounted to the buffer hook 151 prevents the buffer hook 151 from directly contacting the annular protrusion 131. Specifically, the end of the buffer hook 151 is inserted into the guard 152 to be wrapped by the guard 152. The guard 152 may be provided as a pom member. The guard 152 is made of a pom material and has high wear resistance and self-lubricity. And under the condition of smaller impact force, vibration is reduced, and noise is reduced. It will be appreciated that the roller 14, the damping sleeve 223 and the locking pin 172 are all made of a pom material and have excellent wear resistance and self-lubricity, thereby ensuring better noise reduction performance of the child chair when in use.

As a preferred embodiment, a base unit 10 further comprises: a circular ring 16 for auxiliary support of the rotary disk 13. The ring 16 is located below the rotary disk 13 and the ring 16 is fixed to the lower housing 111. The base unit 10 further comprises: a rotation locking mechanism 17 for locking the position of the rotary disk 13 with respect to the base housing 11. The rotation lock mechanism 17 includes: a locking seat 171 and a locking pin 172. The locking seat 171 is fixed to the rotary disk 13. The locking pin 172 is movably mounted to the locking seat 171. The ring 16 is provided with a pin hole into which the locking pin 172 is inserted. The locking pin 172 has a locking position and an unlocking 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 bore. The movement of the locking pin may be achieved by pulling the locking pin directly. The locking and unlocking of the locking pin 172 can also be achieved by moving the locking pin 172 by the movement of the operating member in a ramp conventional manner. A return spring may be provided to urge the locking pin 172 from the unlocked position to the locked position.

As a preferred embodiment, a portion of the base frame 12 encloses a rectangular space. The four corners of the rectangular space are provided with support columns 1113. The support column 1113 cooperates with the base skeleton 12, so that the base skeleton 12 can be assisted in installation and positioning, and impact resistance can be improved under the action of strong impact.

As a preferred embodiment, the base skeleton 12 includes: a connection pipe 121 and two side pipe groups. The side tube group includes: a front elbow 122 and a rear straight 123. The front elbow 122 is welded to the rear straight pipe 123. The rear straight pipe 123 is welded to the connection pipe 121. The front bent pipe 122 is formed by bending a straight pipe by 90 degrees. Specifically, the front bent pipe 122 and the rear straight pipe 123, and the rear straight pipe 123 and the connecting 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 front elbow 122 and the connection pipe 121 are each fixed with a buffer hook 151. The buffer hook 151 to which the front elbow 122 is fixed is located at the front side of the rotating disk 13. The buffer hook 151 to which the connection pipe 121 is fixed is located at the rear side of the rotary disk 13. The impact resistance in the front-rear direction is enhanced. The buffer hook 151 is directly fixed to the base frame 12 with superior shock resistance. The front end of the rotating disk 13 is lower in height than 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 elbow 122 is simultaneously fixed to the base housing 11 by means of screw connection. The rotary disk 13 is punched downward with a plurality of reinforcing ribs. The reinforcing cavities are symmetrically arranged at the front end and the rear end of the rotating disk 13. The structural strength is high, and the safety 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 hooks 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 20mm or more and 40mm or less. Specifically, the width of the buffer hook 151 is 25mm or more and 35mm or less. The structure of the buffer hook 151 effectively ensures the impact strength, and improves the impact resistance, thereby improving the safety performance.

As a preferred embodiment, the front bent pipe 122, the rear straight pipe 123, and the connection pipe 121 are all metal pipes. The metal tube may be a square tube or a special tube. As an alternative embodiment, the front elbow, the rear straight pipe and the connecting pipe may also be provided as round pipes or other shaped pipe elements. Adopt the metal side pipe to compare the welding of pipe structure and be difficult for appearing the rosin joint, and also make things convenient for bolted connection. The 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 comprises: swivel mount 124 and support leg set 125. The swivel mount 124 is secured to the base frame 12. Specifically, the base mechanism 10 further includes: swivel mount 124 and support leg set 125. The swivel mount 124 is secured to the two front elbows 122. The swivel mount 124 is made of a metal plate-like material. The support leg assembly 125 is rotatably coupled to the swivel mount 124. The bottom of the base housing 11 is recessed upward to form a recess 1115. The recess 1115 forms a support leg channel opening 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 the recess 1115 forms a stopper 1116 for limiting the front end of the rotary disk 13. The stopper 1116 is located at the front side of the rotary disk 13. The stops 1116 may promote impact resistance. The support leg assembly 125 may be provided with a position indicating module to indicate the position of the support leg assembly 125, ensuring that the support leg assembly 125 reaches the open position. Specifically, the position of the support leg group 125 can be ensured by means of red-green color display. The support retraction group 125 is displayed 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 comprises: and a connecting slide bar. The connecting slide bar is slidably disposed in the rear straight pipe 123, and a telescopic rod structure is formed by the connecting slide bar and the rear straight pipe 123. The connecting slide bar can be matched with a locking structure on the automobile to be fixed, so that the child seat 100 is fixed on the automobile, and the safety performance is better than that of the mode of placing the child seat on the automobile.

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

The position of the seat shell 21 can be adjusted by adjusting the position of the seat reinforcement 23 relative to the seat mount 22. Specifically, the seat mount 22 is fixed to the rotary disk 13. The body reinforcing frame 23 includes: two elbows 231 and a number of elbow links. As a specific embodiment, the seat body reinforcing frame 23 is provided with two bent pipe links. The two ends of the bent pipe link are fixed to two bent pipes 231. The two elbow links are defined as elbow lower link 232 and elbow middle link 233, respectively. That is, the body reinforcing frame 23 includes: two elbows 231, a lower elbow link 232 and an intermediate elbow link 233. The two ends of the bent-tube lower link 232 are fixed to the bottom ends of the two bent tubes 231. The two ends of the in-bend link 233 are fixed to the two bends 231 and the tops of the two bends 231 extend upward beyond the in-bend link 233. The chair body 102 further comprises: auxiliary reinforcing bars 234 for increasing strength. The auxiliary reinforcing rod 234 is fixed to the body housing 21 and the auxiliary reinforcing rod 234 is located above the link 233 in the elbow. The auxiliary reinforcing rod 234 is parallel to the bent-tube middle link 233 and the bent-tube 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 arrangement of the auxiliary reinforcing rod 234 can improve the structural strength of the chair body, thereby improving the shock resistance and the safety.

As a specific embodiment, the auxiliary reinforcing rod 234, the bent-tube middle connecting rod 233 and the bent-tube lower connecting rod 232 are arranged in an obtuse triangle.

The tops of the bent pipes 231 are parallel to each other and extend in a straight line. The tops of the two elbows 231 form a plane. The plane formed by the auxiliary reinforcing bar 234 and the connecting rod 233 in the bent pipe is parallel to the plane formed by the tops of the two bent pipes 231. Alternatively, the auxiliary reinforcing rod 234 and the connecting rod 233 of the bent pipes are located in the same plane a, and the tops of the two bent pipes 231 are located in the same plane B, which are parallel to each other.

As a specific embodiment, the in-elbow link 233 and the under-elbow link 232 are on the same side of the elbow 231. The bent pipe middle connecting rod 233 and the bent pipe lower connecting rod 232 are positioned outside the arc formed by the bent pipe 231. More specifically, the elbow lower link 232 is disposed below the front end of the elbow 231. The link 233 in the bent pipe is disposed behind the rear end of the bent pipe 231. The front end of the bent pipe 231 is disposed perpendicular to the rear end of the bent pipe 231. The structure of the connecting rod 233 in the bent pipe is the same as that of the connecting rod 232 under the bent pipe.

As a specific embodiment, the length of the auxiliary reinforcing bar 234 is greater than or equal to the distance between the two bent pipes 231 and less than the width of the seat 102. The length of the auxiliary reinforcing rod 234 is smaller than the length of the link 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 chair 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 support connection reinforcing plate 45 is fixed to the seat body reinforcing frame 23. The upper end of the head-rest connection reinforcing plate 45 is fixed to the body housing 21. The head rest 104 is provided with a slider 46. A chute is formed between the head support connection reinforcing plate 45 and the body housing 21. The slide 46 slides in the chute. The length direction of the slide bar 46 is parallel to the length direction of the head rest connection reinforcing plate 45. The head support connection reinforcing plate 45 not only plays a role of a sliding rail, but also can improve the strength of the joint of the head support 104 and the chair body 102. Avoiding the head rest 104 from being separated from the seat 102 during a large impact does not provide a good protection.

As a preferred embodiment, the lower end of the head support connection reinforcing plate 45, the body reinforcing frame 23 and the body case 21 are simultaneously fixed as one body by means of bolting. The connection mode of the head rest connection reinforcing plate 45 is high in reliability. As a specific embodiment, the number of the slide 46 and the head rest connection reinforcing plate 45 is two.

As a preferred embodiment, the head rest 104 comprises: a head guard 41 for protecting the head, a slider portion 42, and a neck portion 43 connecting the head guard 41 and the slider portion 42. The slide block 42 forms a slide bar 46. The child seat 100 further includes: head support neck stiffener 431. The head-support-neck reinforcing plate 431 is fixed to the neck 43. The head-rest neck reinforcing plate 431 can 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-support-neck reinforcing plates 431 are respectively fixed to both ends of the neck 43. As a specific embodiment, the head-rest-neck reinforcing plate 431 extends in the length direction from the slider portion 42 to the head protection portion 41. The length direction of the head support neck reinforcing plate 431 is parallel to the length direction of the head support connection reinforcing plate 45.

As a preferred embodiment, the head rest 104 further comprises: 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 body housing 21 is formed with guide bars 47. The guide bar 47 slides in the guide groove. The number of guide grooves and guide bars 47 is two. The back plate 44 and the head rest connection reinforcing plate 45 raise the strength of the head rest 104 from both sides, and raise the response to the forward and backward impact forces. The head rest is connected with the reinforcing plate 45, and the moving stroke of the head rest 104 is lifted. The guide strip 47 directly forms the height adjusting pin grooves 48, so that the interval between the height adjusting pin grooves 48 can be reduced, and the gear adjusting interval can be reduced. The shoulder strap buffer 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 is slidably mounted with a height adjustment locking pin. The guide bar 47 is formed with a plurality of height adjustment pin grooves 48 that cooperate with the height adjustment pins to adjust the height of the head rest 104 relative to the seat 102. The insertion of the height-adjustment locking pins into the different height-adjustment pin slots 48 enables locking of different heights. The sliding connection structure of the head rest 104 can effectively avoid front and back loosening, left and right loosening and swinging, and has higher stability.

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

The rotation lock mechanism may be provided in different configurations as desired. The linear movement of the slide relative to the locking seat can likewise be converted by means of a bevel transmission of the bevel groove into a movement of the locking pin relative to the locking seat in the other direction. For example, the movement of the locking pin relative to the locking seat may be either a horizontal movement or a height movement. 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 the base according to the requirement.

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 173a. The locking seat 171a is fixed to the base 101. The locking pin 172a is movably mounted to the locking seat 171a. The slider 173a is slidably mounted to the locking seat 171a. The slider 173a is provided with a chute in which the wire locking pin 172a moves. The linear motion of the slider 173a with respect to the locking seat 171a is converted into the motion of the locking pin 172a in the other direction with respect to the locking seat 171a by means of the bevel transmission of the bevel groove. Specifically, the movement direction of the lock pin 172a with respect to the lock seat 171a is perpendicular to the movement direction of the slider 173a with respect to the lock seat 171a. Locking or unlocking can be achieved by operating the slider 173a to move the locking pin 172 a. And the slider return spring 174a returns the moving slider 173a. 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 disk 13 after being moved upward to lock the rotary disk 13. The locking pin 172a may be withdrawn from the rotary disk 13 after being moved downward to unlock the rotary disk 13. The number of unlocking mechanisms 105 is two. The unlocking mechanism 105 includes: a button member 51 for a user to press, a swinging member 52, a wire rope, a transmission link 53, a position indicator 54, and an indicator return spring 55 for resetting the position indicator 54. One end of the wire rope is connected to the swing member 52 so as to transmit the force when the swing member 52 rotates. The two wire ropes of the two unlocking mechanisms 105 are simultaneously connected to the same slider 173a. 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 push button member 51 is pushed to rotate the swing member 52. Both ends of the wire rope are respectively connected with the swinging piece 52 and the sliding piece 173a so that the swinging piece 52 moves to drive the sliding piece 173a to move.

The transmission link 53 connects the position indicator 54 and the swinging member 52, and when the swinging member 52 is pushed to rotate by the push button member 51, the transmission link 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 indication mark indicating the state of the unlocking mechanism 105. After the button member 51 is stopped, the position indicator 54 is rotated by the urging force of the indicator return spring 55 to return. The indication identifier includes a first identifier indicating that the unlocking mechanism 105 is unlocked and a second identifier 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 member 51 is pressed, the first mark aligns with the window 1123. The second mark aligns with the window 1123 when the button member 51 is not pressed. As a specific embodiment, the first logo and the second logo are different in color. The unlocked state and the locked state may be distinguished, for example, by red and green colors. The position indicator 54 has an unlock indication position and a lock indication position. The first indicia align with the window 1123 when the position indicator 54 is in the unlock indication position. The second indicia align with the window 1123 when the position indicator 54 is in the lock indication position. The transmission link 53 connects the position indicator 54 and the swinging member 52, and when the swinging member 52 is pushed to rotate by the push button member 51, the transmission link 53 pushes the position indicator 54 to rotate against the urging force of the indicator return spring 55 to move from the lock indication position to the unlock indication position. After the push button member 51 is stopped being pressed, the urging force of the indicator return spring 55 rotates the position indicator 54 to move from the unlock indication position to the lock indication position, and at the same time, the position indicator 54 pushes the swing member 52 to return through the transmission link 53. The window 1123 is oriented parallel to the pressing direction of the button member 51. The user can observe the indication mark through the window 1123 at the same time to understand the current state and the state after operation when pressing the button member 51. Specifically, the pressing direction of the button member 51 is from the top down.

As a specific embodiment, the unlocking mechanism 105 further includes: unlocking the base 56. Unlocking base 56 is fixed to base 101. The swing member 52 and the position indicator 54 are both rotatably mounted to an unlocking base 56. The rotational axes of the swing member 52 and the position indicator member 54 are parallel to each other. The steel wire stay cord is provided with a steel wire sleeve. One end of the wire sleeve is secured to the unlocking base 56. The other end of the wire sleeve is fixed to the locking seat 171. The indicator return spring 55 is a torsion spring. The button member 51 is formed with a butt lever for pushing the swing member 52 to rotate. The abutting rod abuts against the swinging member 52. The unlocking mechanism 105 further includes a swing member return spring. The swing member return spring is sleeved on the steel wire pull rope, and two ends of the swing member return spring are respectively abutted against the swing member 52 and the unlocking base 56.

As a preferred embodiment, the seat mount 22 is provided with a link chute 222 through which the elbow link passes and guides the elbow link for sliding. The body mount 22 is fitted with a shock absorbing boot 223 that prevents the bent-tube link from directly contacting the body mount 22. The damping sleeve 223 is annularly disposed in the connecting rod chute 222 and wraps the wall of the connecting rod chute 222. The bent-tube link passes through the shock absorbing sheath 223.

As a specific embodiment, the body mount 22 includes two mounting plates 221. The mounting plate 221 is fixed to the rotary disk 13. The bent-tube link 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 bent link passes and which guides the bent link to slide. The shock absorbing sleeve 223 is provided with a hook structure by which the shock absorbing sleeve 223 is fixed to the mounting plate 221. Each mounting plate 221 is formed with a number of link runners 222. The number of link runners 222 formed in each mounting plate 221 is the same as the number of bent links.

As a specific embodiment, the locking and unlocking of the positions of the seat body reinforcing frame and the seat body mounting frame can be realized by arranging the reinforcing frame control mechanism. The reinforcement bracket control mechanism may be configured in the same manner as the adjustment of the head rest. As an alternative embodiment, the reinforcement frame control mechanism, the rotation locking mechanism for locking the rotating disc, and the unlocking mechanism may be provided in different manners as required, and may be rotated by one key or rotated by separate keys.

As a specific embodiment, the child seat further comprises a shoulder strap directly connected with the neck 43 and adaptively adjusted, so that the movement of the head rest is not limited by the installation of the shoulder strap, thereby not affecting the adjustment of the head rest, ensuring the adjustment of the head rest in a large stroke, and meeting the needs of children of different ages.

It will be evident to those skilled in the art that the invention 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 characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention 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 disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.

Claims (5)

1. A split linkage controlled child seat comprising: a base, a seat, a rotation mechanism rotatably mounting the seat to the base, a rotation locking mechanism for locking a position of the seat relative to the base, and an unlocking mechanism for unlocking the rotation locking mechanism so that the seat can be rotated relative to the base;

the rotation mechanism includes: a rotating disc; the rotating disk is rotatably mounted to the base; the chair body is mounted to the rotating disc; the rotation lock mechanism includes: the locking seat, the locking pin used for being inserted into the base so as to lock the rotating position of the rotating disk, the sliding piece used for driving the locking pin to move and the sliding piece reset spring used for resetting the sliding piece; the locking seat is fixed to the rotating disk; the locking pin is movably mounted to the locking seat; the slider is slidably mounted to the locking seat;

the sliding piece is provided with a chute for guiding the locking pin to move; the linear motion of the sliding piece relative to the locking seat is converted into the motion of the locking pin relative to the locking seat along the other direction in a bevel transmission mode of a chute; the unlocking mechanism comprises: the device comprises a button piece for being pressed by a user, a swinging piece, a steel wire stay cord, a transmission connecting piece, a position indicating piece and an indicating piece reset spring for resetting the position indicating piece; the button piece is pushed to push the swinging piece to rotate after being pressed; the two ends of the steel wire stay cord are respectively connected with the swinging piece and the sliding piece, so that the swinging piece moves to drive the sliding piece to move;

the transmission connecting piece is connected with the position indicating piece and the swinging piece, and when the swinging piece is pushed to rotate by the button piece, the transmission connecting piece pushes the position indicating piece to rotate against the acting force of the indicating piece reset spring; the position indicator is provided with an indication mark for indicating the state of the unlocking mechanism;

after the button piece is stopped to be pressed, the acting force of the indicator return spring drives the position indicator to rotate so as to realize the return;

the indication mark comprises a first mark for indicating that the unlocking mechanism is unlocked and a second mark for indicating that the unlocking mechanism is not unlocked; the base is provided with a window for exposing the indication mark; after the button member is pressed, the first mark is aligned with the window; when the button piece is not pressed, the second mark is aligned with the window;

the first mark and the second mark are different in color;

the window is parallel to the pressing direction of the button piece;

the unlocking mechanism further includes: unlocking the base; the unlocking base is fixed to the base; the swing member and the position indicator are both rotatably mounted to the unlocking base.

2. A split linkage controlled child seat according to claim 1,

the steel wire stay rope is provided with a steel wire sleeve; one end of the wire sleeve is fixed to the unlocking base.

3. A split linkage controlled child seat according to claim 1,

the indicator return spring is a torsion spring; the button piece is provided with a supporting rod for pushing the swinging piece to rotate; the abutting rod abuts against the swinging piece.

4. A split linkage controlled child seat according to any one of claims 1-3,

the number of the unlocking mechanisms is two; the two wire pull ropes of the two unlocking mechanisms are simultaneously connected to the same sliding piece.

5. A split linkage controlled child seat according to claim 4,

the two unlocking mechanisms are arranged on two sides of the base.