CN211431907U - Chair back and seat connecting part of child chair - Google Patents

Abstract

The utility model relates to the technical field of seats, in particular to a connecting component of a chair back of a child chair, which comprises a connecting frame (100) and a connecting head (200), wherein the connecting frame is provided with a first bulge (101) or a first chute (102), the connecting head is provided with a first chute or a first bulge, and the first chute or the first bulge on the connecting head is correspondingly matched with the first bulge or the first chute on the connecting frame; a clamping tongue (103) or a clamping groove (104) is arranged on the connecting frame, a clamping groove or a clamping tongue is arranged on the connecting head, and the clamping groove or the clamping tongue on the connecting head is correspondingly matched with the clamping tongue or the clamping groove on the connecting frame; during assembly, the clamping groove or the clamping tongue on the connector is close to the connecting frame relative to the first sliding groove or the first protruding part on the connector. The utility model has the characteristics of easy dismounting and aesthetic property are better.

Description

Chair back and seat connecting part of child chair

Technical Field

The utility model relates to the technical field of seats, in particular to a children chair back seat support adapting unit.

Background

The chair on the existing market is divided into following two kinds, one kind is that back of the chair direct fixed connection is on the support frame, and the seat support is also fixed on the support frame, the support frame again with the chassis fixed connection of chair, the problem that this kind of chair exists is: when the chair is used by a consumer, the chair back can not fit with the human body curve, does not conform to the humanized design and is gradually eliminated by the market; the other type is that a connecting mechanism is arranged between the support frame and the chair back, and the connection is realized through a mechanical connection mode, such as a rotating shaft connection, so that when a consumer uses the chair back, the chair back can be adjusted and rotated correspondingly according to the back of the user, the chair back can be attached to a human body curve at any time, and the comfort degree in use is improved. The existing connecting structure between a support frame and a chair back mainly comprises a connecting frame and two connectors, wherein the connecting frame is fixed on the support frame, the connecting frame is of a U-shaped structure, the two connectors are arranged at the end part of a U-shaped opening of the U-shaped connecting frame through a structure that a convex edge is matched with a sliding groove, and the two parts of the chair back are fixed on the corresponding connecting heads by using screws or bolts, so that the problem that the separation between the convex edge and the sliding groove is easy to occur if a user pulls the chair back carelessly, the chair back is disconnected with the connecting frame, the use of the chair is inconvenient, the problem that the separation between the convex edge and the sliding groove is easy to occur is solved, the connecting head and the connecting frame are fixed again by using the bolts or the screws, and the existing connecting structure has the problems that the assembly and the disassembly are troublesome, the beauty of the joint is also affected after the bolt or the screw is fixed; meanwhile, the height between the connecting frame and the supporting frame cannot be adjusted, and the corresponding height adjustment of the chair back cannot be carried out according to the use of people with different physical constitutions.

Therefore, the connecting structure between the prior support frame and the chair back has the problems of troublesome disassembly and assembly and poor aesthetic property.

SUMMERY OF THE UTILITY MODEL

The utility model provides a connecting component of a chair back of a child chair, which is used for solving the technical problems of the connecting structure between the prior supporting frame and the chair back and has the characteristics of convenient assembly and disassembly and good aesthetic property.

The technical scheme of the utility model: a chair back seat connecting component of a child chair comprises a connecting frame and a connector, wherein a first protruding part or a first sliding groove is arranged on the connecting frame, a first sliding groove or a first protruding part is arranged on the connector, and the first sliding groove or the first protruding part on the connector is correspondingly matched with the first protruding part or the first sliding groove on the connecting frame; the connecting frame is provided with a clamping tongue or a clamping groove, the connecting head is provided with a clamping groove or a clamping tongue, and the clamping groove or the clamping tongue on the connecting head is correspondingly matched with the clamping tongue or the clamping groove on the connecting frame; during assembly, the clamping groove or the clamping tongue on the connector is close to the connecting frame relative to the first sliding groove or the first protruding part on the connector. The utility model realizes the further locking after the first projecting part and the first chute are matched and installed by additionally arranging the structure that the clamping tongue is matched with the clamping groove, and the clamping acting force between the clamping tongue and the clamping groove ensures that the first projecting part and the first chute are matched and installed firmly and can not be separated easily in the normal use and the transportation process of the chair at ordinary times; during assembly, after the first protruding part is matched with the first sliding groove, a person uses a slightly larger acting force, and the clamping tongue and the clamping groove can be clamped together; when the chair needs to be disassembled, a person uses a larger acting force to act on the chair back, the acting force of the person is larger than the clamping acting force between the clamping tongue and the clamping groove, the cooperation between the first protruding part and the first sliding groove can be removed after the clamping between the clamping tongue and the clamping groove is removed, the installation and the disassembly of the structure are more convenient compared with the screwing of bolts or screws, and the specific situation of the connecting part can hardly be seen from the outside after the clamping tongue and the clamping groove are clamped because the clamping tongue and the clamping groove are smaller and are positioned at the relatively hidden positions, and the structure is more attractive compared with the fixation of the bolts or the screws; wherein first bulge and first spout, latch and draw-in groove, which setting is on the link exactly, which setting is on the connector, can set up according to the design demand is nimble, can be that first bulge sets up on the link, first spout sets up on the link, also can be that first bulge sets up on the link, first spout sets up on the link, can be that the latch sets up on the link, the draw-in groove sets up on the link, also can be that the latch sets up on the link, the draw-in groove sets up on the link, it is comparatively nimble to set up.

Preferably, the first sliding groove is of a U-shaped stepped structure, and the latch or the slot is arranged at a U-shaped opening end of the first sliding groove; the first bulge is of a T-shaped structure, and the T-shaped bulge of the first bulge is arranged in the low-step space of the first sliding groove in a matched mode. First spout is the stair structure of U-shaped and goes out the turn-ups that has set up a U-shaped for the first spout edge of U-shaped, and the first spout of U-shaped constitutes a space with the first spout of U-shaped, and this space cooperates with the major part bulge of the first bulge of T font, realizes the primary connection between link and the connector, and the stability after the assembly of be is better, and the joint can not take place between connector and the link and control the rocking.

Preferably, the connector is made of an elastic material, and a middle position of an outer wall surface of the connector is in an inward contraction structure. The connecting head made of elastic materials enables the chair back to flexibly rotate correspondingly according to the back force of a user, and after the acting force of the back on the chair back is removed, the chair back can restore to the initial position and state under the self elastic acting force of the connecting head; the structure design that the middle position of the outer wall surface of the connector contracts inwards is to increase the self deformation acting force of the connector, after the middle position of the connector contracts, when the connector is subjected to an external acting force, the connector can deform at the contracted position more easily and firstly, and after the external acting force is removed, the elastic restoring force for restoring the deformation at the contracted position is stronger; wherein the connector can be made of elastic rubber.

Preferably, the link is the U-shaped structure, the connector has a set ofly, and a set of connector corresponds the two tip of setting at the U-shaped opening of link, connector and back of the chair fixed connection. The connecting frame is of a U-shaped structure, so that the connecting frame corresponds to the two chair backs, the two chair backs can be just correspondingly arranged at the two end parts of the U-shaped connecting frame, and the non-opening end of the connecting frame can be just arranged on the chair seat supporting frame.

Preferably, the lifting adjusting device comprises a lifting adjusting assembly, a connecting block is arranged on the lifting adjusting assembly, a second sliding groove or a second protruding portion is arranged on the side face of the connecting block, a second protruding portion or a second sliding groove is arranged on one side, opposite to the connecting head, of the connecting frame, and the second protruding portion or the second sliding groove on the connecting frame is correspondingly matched with the second sliding groove or the second protruding portion on the connecting block. The lifting adjusting component is arranged to solve the problem that the height of the chair back cannot be adjusted correspondingly according to the use of people with different physical constitutions, and a user can flexibly adjust the height of the chair back on the chair seat supporting frame through the lifting adjusting component; the mounting and matching between the connecting frame and the lifting adjusting assembly can be realized through the matching and the dismounting of the second sliding groove and the second protruding part, wherein the second protruding part is of a convex edge structure, and the convex edge can be well matched with the second sliding groove; wherein second bulge and second spout, which setting is on the link exactly, which setting is on the connecting block, can set up according to the design demand is nimble, can be that the second bulge sets up on the link, and the second spout sets up on the connecting block, also can be that the second bulge sets up on the connecting block, and the second spout sets up on the link, sets up comparatively in a flexible way, as long as can realize the good cooperation between second bulge and the second spout just good.

Preferably, the second sliding grooves are in one group, the group of second sliding grooves are parallel, the group of second sliding grooves are arranged on two side faces of the connecting block, or the group of second sliding grooves are arranged on the connecting frame; the second protruding parts are in a group and are parallel, and a group of second protruding parts are arranged on two side faces of the connecting block or a group of second protruding parts are arranged on the connecting frame. All set up second spout and second bulge into a set ofly for make link and connecting block pass through second spout and second bulge complex structure assembled connection after, the stability of installation is better.

Preferably, the lifting adjusting assembly comprises a shell, the connecting block is arranged on one side face of the shell, a sliding groove is formed in the shell, a sliding piece is arranged in the sliding groove in a sliding mode, an adjusting piece is movably arranged in the shell and matched with the sliding piece, and the adjusting piece drives the sliding piece to move left and right relative to the shell in a vertical moving mode relative to the shell. Through reciprocating of external force drive regulating part, the regulating part just can drive the slider horizontal slip in the sliding tray, and then realizes locking and unblock between slider and the seat support frame, and after the locking, the back of the chair just can not be adjusted from top to bottom on the seat support frame, and after the locking is relieved, the back of the chair just can be adjusted from top to bottom on the seat support frame again for the upper and lower regulation of the back of the chair is comparatively convenient, only needs to make the regulating part just good for casing up-and-down motion.

Preferably, the sliding part comprises a sliding block, the sliding block is arranged in the sliding groove in a sliding mode, the sliding block is provided with a lock column, the sliding block is provided with an adjusting hole, and the adjusting part is movably arranged inside the adjusting hole; the regulating part is including adjusting the handle, it is located the outside of casing to adjust the handle, it is equipped with the regulation pole on hand to adjust, adjust the pole and set up for the sliding block slope, the hole wall face in regulation hole is the inclined plane, and the regulation pole that the slope set up cooperatees with the inclined plane in regulation hole. The adjusting rod is arranged in a tilted mode relative to the sliding block, meanwhile, the corresponding hole wall surface of the adjusting hole is designed to be an inclined plane, when the adjusting rod moves up and down relative to the shell integrally, the tilting adjusting rod only can move up and down directionally, the adjusting hole can move in order to adapt to the movement of the tilting adjusting rod, relative movement can occur between the adjusting hole and the adjusting rod, the sliding block can move back and forth in the sliding groove, locking and unlocking relative to the seat support frame are achieved, the tilting adjusting rod and the inclined plane of the adjusting hole which is matched with the tilting adjusting rod are ingenious in design, and the locking and unlocking operation is simple and easy to implement. The inclination angle of the adjusting rod can be set to any angle within the range of 30-60 degrees, and preferably set to 45 degrees.

Preferably, one end of the adjusting rod, which is far away from the adjusting handle, is provided with a limiting rod, the limiting rod is movably connected with the wall surface of the shell, the limiting rod is sleeved with a return spring, one end of the return spring is fixedly arranged on the inner wall surface of the shell, and the other end of the return spring is movably butted with the end part of the adjusting rod. The return spring makes to press and adjusts the spanner and realize the automatic unblock of lock post after, external force removes, and under return spring's return effort, the regulation pole can rebound initial position naturally, is convenient for adjust once more.

Preferably, the position, corresponding to the limiting rod, in the shell is provided with a limiting column, the limiting column is provided with a limiting through hole, the limiting rod is movably arranged in the limiting through hole, and one end of the return spring is fixedly connected with the limiting column. The limiting post and the limiting hole can properly limit the limiting rod, so that the limiting rod can only move back and forth along the axial direction of the limiting hole, the limiting rod cannot swing in the radial direction of the limiting hole, and the stability of adjusting work of the adjusting piece is guaranteed.

Preferably, the shell comprises two parallel sleeves, the two sleeves are connected together through a connecting section, the connecting block is arranged on one side face of the connecting section, the sliding groove is perpendicular to the sleeves, and the sliding groove, the sliding piece and the adjusting piece are arranged inside the connecting section. After the two parallel sleeves and the connecting section are connected, the overall shape of the shell is I-shaped, the shell is a structure specially formed for adapting to the two supporting rods of the seat support frame, the sleeves are sleeved on the corresponding supporting rods in a sliding mode, and the connecting section is located between the two supporting rods.

Preferably, the seat support comprises a seat support frame, the two sleeves are arranged on the seat support frame in a sliding mode, a limiting hole or a limiting groove is formed in the seat support frame, and the limiting hole or the limiting groove is matched with the lock column. The whole chair seat support frame is of an L-shaped structure, the chair seat is arranged at the horizontal section of the chair seat support frame, the base of the chair is also fixed at the horizontal section of the chair seat support frame, and the shell is movably arranged at the vertical section of the chair seat support frame; the limiting hole or the limiting groove is matched with the lock cylinder, so that the locking and unlocking functions of the lock cylinder are realized.

Preferably, the connecting frame is fixedly connected with the connecting block through a screw or a bolt. After the connecting block and the connecting frame are assembled and connected through the structure that the second sliding groove is matched with the second protruding part, when the chair back is pulled, the connecting frame can be separated from the second sliding groove and the second protruding part on the connecting block, and the connecting block and the connecting frame are fixed through screws or bolts, so that the possibility of separation between the second sliding groove and the second protruding part when the chair back is pulled is avoided.

Preferably, the lifting adjusting component is arranged on the seat support frame in a sliding mode.

Preferably, the shell is slidably disposed on the seat support frame.

The utility model discloses following beneficial effect has:

(1) the first bulge and the first chute are further locked after being matched and mounted by additionally arranging a structure that the clamping tongue is matched with the clamping groove, and the first bulge and the first chute are firmly matched and mounted and cannot be easily separated due to clamping acting force between the clamping tongue and the clamping groove in normal use and carrying processes of the chair at ordinary times; during assembly, after the first protruding part is matched with the first sliding groove, a person uses a slightly larger acting force, and the clamping tongue and the clamping groove can be clamped together; when the chair needs to be disassembled, a person uses a larger acting force to act on the chair back, and because the acting force of the person is larger than the clamping acting force between the clamping tongue and the clamping groove, after the clamping between the clamping tongue and the clamping groove is removed, the chair back is lifted upwards, the matching between the first bulge and the first chute can be removed, and the structure is more convenient to assemble and disassemble compared with the bolt or the screw,

(2) because the clamping tongue and the clamping groove are small and are positioned at the relatively hidden positions, the specific situation of the connecting position can not be seen from the outside after the clamping tongue and the clamping groove are clamped, and the clamping device is more attractive compared with bolt or screw fixation.

Drawings

FIG. 1 is an exploded view of a portion of the structure of the present invention;

FIG. 2 is a top view of the connecting frame of the present invention after connecting with the lifting adjusting assembly;

FIG. 3 is a front view of the structure of the present invention after the connecting frame is connected to the lifting adjusting assembly;

FIG. 4 is a schematic structural view of the first protrusion and the latch of the present invention on the connecting frame;

FIG. 5 is a perspective view of the connecting head of the present invention;

fig. 6 is a perspective view of the structure of the first sliding groove and the locking groove of the present invention disposed on the connector;

fig. 7 is a perspective view of a first structure of the lift adjustment assembly of the present invention;

fig. 8 is a perspective view of the second sliding groove of the present invention on the connecting block;

FIG. 9 is a schematic structural view of the second protrusion of the present invention on the connecting frame;

FIG. 10 is a perspective view of the sliding member and the adjusting member of the present invention in a configuration in which they are engaged;

fig. 11 is a perspective view of the sliding member according to the present invention.

The labels in the figures are: 100-connecting frame, 101-first bulge, 102-first sliding groove, 103-clamping tongue, 104-clamping groove, 200-connecting head, 300-chair back, 400-lifting adjusting component, 401-shell, 4011-sleeve, 4012-connecting section, 402-sliding groove, 403-sliding piece, 4031-sliding block, 4032-locking column, 4033-adjusting hole, 404-adjusting piece, 4041-adjusting handle, 4042-adjusting rod, 4043-limiting rod, 4044-return spring, 4045-limiting column, 4046-limiting through hole, 500-connecting block, 501-second sliding groove, 502-second bulge, 600-chair seat supporting frame and 700-armrest.

Detailed Description

The following description is made with reference to the accompanying drawings and examples, but not to be construed as limiting the invention.

As shown in fig. 1, 2 and 3, the connecting member for a chair back seat of a child chair comprises a connecting frame 100 and a connecting head 200 as shown in fig. 5, wherein the connecting frame is provided with a first protrusion 101 or a first sliding groove 102 as shown in fig. 4, the connecting head is provided with a first sliding groove or a first protrusion, and the first sliding groove or the first protrusion on the connecting head is correspondingly matched with the first protrusion or the first sliding groove on the connecting frame; a clamping tongue 103 or a clamping groove 104 shown in fig. 6 is arranged on the connecting frame, a clamping groove or a clamping tongue is arranged on the connecting head, and the clamping groove or the clamping tongue on the connecting head is correspondingly matched with the clamping tongue or the clamping groove on the connecting frame; during assembly, the clamping groove or the clamping tongue on the connector is close to the connecting frame relative to the first sliding groove or the first protruding part on the connector. The first sliding chute is of a U-shaped stepped structure, and the clamping tongue or the clamping groove is arranged at the U-shaped opening end of the first sliding chute; the first bulge is of a T-shaped structure, and the T-shaped bulge of the first bulge is arranged in the low-step space of the first sliding groove in a matched mode. The connector is made of elastic materials, and the middle position of the outer wall surface of the connector is of an inward contraction structure. The connecting frame is of a U-shaped structure, the connecting heads are in a group, the group of connecting heads are correspondingly arranged at two end parts of the U-shaped opening of the connecting frame, and the connecting heads are fixedly connected with the chair back 300. The lifting adjusting assembly 400 comprises a lifting adjusting assembly 400 shown in fig. 7, wherein a connecting block 500 shown in fig. 8 is arranged on the lifting adjusting assembly, a second sliding groove 501 or a second protruding part 502 shown in fig. 9 is arranged on the side surface of the connecting block, a second protruding part or a second sliding groove is arranged on one side of the connecting frame opposite to the connecting head, and the second protruding part or the second sliding groove on the connecting frame is correspondingly matched with the second sliding groove or the second protruding part on the connecting block. The group of the second sliding grooves is parallel to each other and arranged on two side surfaces of the connecting block or arranged on the connecting frame; the second bulge has a set of, and a set of second bulge is parallel, and a set of second bulge sets up on the both sides face of connecting block, or a set of second bulge sets up on the link.

The lifting adjusting assembly comprises a shell 401, a connecting block is arranged on one side face of the shell, a sliding groove 402 is formed in the shell, a sliding piece 403 is arranged in the sliding groove in a sliding mode, an adjusting piece 404 is arranged in the shell in a movable mode, the adjusting piece is matched with the sliding piece, and the adjusting piece drives the sliding piece to move left and right relative to the shell in a movable mode relative to the shell in an up-and-down mode. The sliding piece comprises a sliding block 4031, the sliding block is arranged in the sliding groove in a sliding mode, a locking column 4032 is arranged on the sliding block, an adjusting hole 4033 shown in the figure 11 is formed in the sliding block, and the adjusting piece is movably arranged inside the adjusting hole; the adjusting part comprises an adjusting handle 4041, the adjusting handle is located outside the shell, the adjusting handle is provided with an adjusting rod 4042 shown in fig. 10, the adjusting rod is obliquely arranged relative to the sliding block, the wall surface of the hole of the adjusting hole is an inclined surface, and the obliquely arranged adjusting rod is matched with the inclined surface of the adjusting hole. The regulating rod is provided with a limiting rod 4043 at one end far away from the regulating handle, the limiting rod is movably connected with the wall surface of the shell, the limiting rod is sleeved with a return spring 4044, one end of the return spring is fixedly arranged on the inner wall surface of the shell, and the other end of the return spring is movably butted with the end part of the regulating rod. The inside of casing and the corresponding position of gag lever post are equipped with spacing post 4045, and the inside of spacing post is equipped with spacing through-hole 4046, and the gag lever post activity sets up in the inside of spacing through-hole, return spring's one end and spacing post fixed connection. The casing includes two sleeve pipes 4011 that parallel, and two sleeve pipes link together through linkage segment 4012, and the connecting block setting is on a side of linkage segment, and the sliding tray is mutually perpendicular with the sleeve pipe, and sliding tray, slider and regulating part all set up the inside at the linkage segment. Including seat support frame 600, two sleeve pipes all slide to set up on the seat support frame, are equipped with spacing hole or spacing groove on the seat support frame, spacing hole or spacing groove and lock post phase-match. The connecting frame is fixedly connected with the connecting block through a screw or a bolt. The lifting adjusting component is arranged on the chair seat supporting frame in a sliding manner. The shell is arranged on the seat support frame in a sliding manner.

The utility model discloses a theory of operation does:

the chair seat support frame 600 is an L-shaped structure and comprises a horizontal section and a vertical section, the chair seat is fixed on the horizontal section of the L-shaped chair seat support frame, the chassis is fixed below the horizontal section of the L-shaped chair seat support frame, two sleeves 4011 are sleeved on two support rods of the vertical section of the L-shaped chair seat support frame, an adjusting handle 4041 is manually pressed down, an inclined rod with an inclination angle of 45 degrees can drive a sliding block 4031 to slide back and forth in a sliding groove 402 along the horizontal direction, so that locking or unlocking between a lock column 4032 and a limiting hole is realized, the limiting hole is arranged on the two support rods of the L-shaped chair seat support frame, when the adjusting handle is pressed down, the lock column is separated from the limiting hole to realize unlocking, up-and-down adjustment of the chair back 300 on the chair seat support frame can be carried out, after the adjusting handle is loosened, the adjusting rod 4042 is, the locking between the lock column and the limiting hole is realized, and the locking on the chair seat supporting frame after the chair back is adjusted is realized; the second protrusion 502 is aligned with the second sliding groove 501 on the connecting block 500 and slides in, so that the primary fixed connection between the connecting frame 100 and the connecting block is realized, in order to avoid that the second protrusion is disconnected with the second sliding groove when the chair back is pulled upwards, and then the screws are aligned with the corresponding threaded holes on the connecting frame and the connecting block, so that the complete fixed connection between the connecting frame and the connecting block is realized; carry out fixed connection with the back of the chair earlier with connector 200 through screw or bolt, take up the back of the chair again, aim at first spout 102 on the connector the first bulge 101 of U-shaped link tip, slide first bulge into first spout in, realize preliminary fixed connection between link and the connector, when first bulge can't continue to slide in first spout again, use power a bit bigger again, the card tongue 103 that is located the link tip this moment will block into the draw-in groove 104 on the connector, realize complete fixed connection between link and the connector, when needing to carry out the disconnection between link and the connector, reuse great power again, realize breaking away from between card tongue and the draw-in groove earlier, carry out breaking away from between first bulge and the first spout again. The chair can be pushed or pulled to move forward and backward by the armrest 700 at the top of the seat support 600.

Claims (10)

1. A chair back and seat connecting component of a child chair is characterized in that: the connecting device comprises a connecting frame (100) and a connecting head (200), wherein a first protruding part (101) or a first sliding groove (102) is arranged on the connecting frame, a first sliding groove or a first protruding part is arranged on the connecting head, and the first sliding groove or the first protruding part on the connecting head is correspondingly matched with the first protruding part or the first sliding groove on the connecting frame; a clamping tongue (103) or a clamping groove (104) is arranged on the connecting frame, a clamping groove or a clamping tongue is arranged on the connecting head, and the clamping groove or the clamping tongue on the connecting head is correspondingly matched with the clamping tongue or the clamping groove on the connecting frame; during assembly, the clamping groove or the clamping tongue on the connector is close to the connecting frame relative to the first sliding groove or the first protruding part on the connector.

2. The child chair back seat attachment member of claim 1, wherein: the first sliding groove is of a U-shaped stepped structure, and the clamping tongue or the clamping groove is arranged at the U-shaped opening end of the first sliding groove; the first bulge is of a T-shaped structure, and the T-shaped bulge of the first bulge is arranged in the low-step space of the first sliding groove in a matched mode.

3. The child chair back seat attachment member of claim 1, wherein: the connector is made of elastic materials, and the middle position of the outer wall surface of the connector is of an inward contraction structure.

4. The child chair back seat attachment member of claim 1, wherein: the link is the U-shaped structure, the connector has a set ofly, and a set of connector corresponds two tip of U-shaped opening that set up at the link, connector and back of the chair (300) fixed connection.

5. The child chair back seat attachment member of claim 1, wherein: including lift adjustment subassembly (400), be equipped with connecting block (500) on the lift adjustment subassembly, the side of connecting block is equipped with second spout (501) or second bulge (502), one side relative with the connector is equipped with second bulge or second spout on the link, second bulge or second spout on the link correspond the matching with second spout or second bulge on the connecting block.

6. The child chair back seat attachment member of claim 5, wherein: the second sliding grooves are in a group and are parallel, and the group of second sliding grooves is arranged on two side surfaces of the connecting block or the group of second sliding grooves is arranged on the connecting frame; the second protruding parts are in a group and are parallel, and a group of second protruding parts are arranged on two side faces of the connecting block or a group of second protruding parts are arranged on the connecting frame.

7. The child chair back seat attachment member of claim 5, wherein: the lifting adjusting assembly comprises a shell (401), the connecting block is arranged on one side face of the shell, a sliding groove (402) is formed in the shell, a sliding piece (403) is arranged in the sliding groove in a sliding mode, an adjusting piece (404) is arranged in the shell in a movable mode, the adjusting piece is matched with the sliding piece, and the adjusting piece drives the sliding piece to move left and right relative to the shell in a movable mode relative to the shell in an up-and-down mode.

8. The child chair back seat attachment member of claim 7, wherein: the sliding piece comprises a sliding block (4031), the sliding block is arranged in the sliding groove in a sliding mode, a locking column (4032) is arranged on the sliding block, an adjusting hole (4033) is formed in the sliding block, and the adjusting piece is movably arranged inside the adjusting hole; the regulating part is including adjusting handle (4041), it is located the outside of casing to adjust the handle, it adjusts pole (4042) to adjust to be equipped with on hand, adjust the pole and set up for the sliding block slope, the hole wall face in regulation hole is the inclined plane, and the inclined plane cooperation of regulation pole and regulation hole that the slope set up.

9. The child chair back seat attachment member of claim 8, wherein: the adjusting device is characterized in that a limiting rod (4043) is arranged at one end, far away from the adjusting handle, of the adjusting rod, the limiting rod is movably connected with the wall surface of the shell, a return spring (4044) is sleeved on the limiting rod, one end of the return spring is fixedly arranged on the inner wall surface of the shell, and the other end of the return spring is movably abutted to the end of the adjusting rod.

10. The child chair back seat attachment member of claim 9, wherein: the inside of casing and the corresponding position of gag lever post are equipped with spacing post (4045), the inside of spacing post is equipped with spacing through-hole (4046), the gag lever post activity sets up the inside at spacing through-hole, return spring's one end and spacing post fixed connection.

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