CN217730535U - Unlocking structure of child seat pocket - Google Patents

Abstract

The utility model discloses an unlocking structure of a child seat pocket, which comprises a lower frame body with an unfolding position and a folding position, a backrest frame capable of rotating relative to the lower frame body to adjust the front and back angles, and a lower frame body locking mechanism for locking the lower frame body when the lower frame body is at the unfolding position, wherein the lower frame body locking mechanism can be turned forwards by the backrest frame to unlock, a slidable locking piece is arranged at the rotating joint of the backrest frame and the lower frame body, and the locking piece can lock the backrest frame and the lower frame body when the backrest frame is at different working angles; the backrest frame is provided with an unlocking button which can stretch relative to the backrest frame and a limiting slide button which can limit the pressing stroke of the unlocking button, and the unlocking button is directly or indirectly connected with the locking piece through a traction lock; the utility model discloses the angular adjustment and the seat pocket that utilize the different motion strokes of locking piece can realize the back frame are folding, compare with prior art, need not to set up two sets of independent unlocking structure, and overall structure is simple and novel, has simplified the equipment step, the cost is reduced.

Description

Unlocking structure of children seat pocket

Technical Field

The utility model relates to an unlocking structure of children's seat pocket.

Background

A child seat pocket is one of necessary components of children products such as a child stroller and the like. The prior child stroller generally comprises a frame, a wheel assembly connected with the frame, and a seat pocket mounted and connected with the frame, wherein the seat pocket is used for seating a child. With the increasing demand of people for the comfort level of the infant, the seat bag is usually set to be in various states (including a sitting posture state and a lying posture state).

The child seat pocket in the prior art comprises a lower frame body with an unfolding position and a folding position, and a backrest frame capable of rotating relative to the lower frame body to adjust the front and rear angles, wherein the lower frame body is locked in the unfolding position through a lower frame body locking mechanism. In order to facilitate the conversion and use of the child seat pocket in a plurality of working states, the backrest frame is generally locked at different working angles through the backrest angle adjusting mechanism. However, the unlocking components of the existing lower frame body locking mechanism and the backrest angle adjusting mechanism are generally separately arranged, and are two independent unlocking structures, so that the overall structure is complex, the assembly is complicated, and the cost is high.

Disclosure of Invention

The utility model discloses the purpose is: the unlocking structure of the child seat pocket has the advantages that the angle adjustment of the backrest frame and the folding of the seat pocket can be realized by utilizing different movement strokes of the locking piece, the structure is simple and novel, the assembling steps are simplified, and the cost is reduced.

The technical scheme of the utility model is that: an unlocking structure of a child seat pocket comprises a lower frame body with an unfolding position and a folding position, a backrest frame capable of rotating relative to the lower frame body to adjust the front and back angles, and a lower frame body locking mechanism for locking the lower frame body when the lower frame body is at the unfolding position, wherein the lower frame body locking mechanism can be unlocked by forward turning over the backrest frame, a slidable locking piece is arranged at the rotating connection position of the backrest frame and the lower frame body, and the locking piece can be locked with the lower frame body when the backrest frame is at different working angles; the backrest frame is provided with an unlocking button which can stretch relative to the backrest frame and a limiting slide button which can limit the pressing stroke of the unlocking button, and the unlocking button is directly or indirectly connected with the locking piece through a traction lock;

the limiting slide button is provided with a first working position and a second working position; the unlocking button is provided with a first pressing position and a second pressing position; the locking piece is provided with a locking position, a first unlocking position and a second unlocking position;

when the limiting sliding button slides to the first working position, the unlocking button is pressed, the unlocking button enters the first pressing position, the locking piece is pulled by the traction lock to enter the first unlocking position and the locking of the backrest frame is released, the backrest frame can rotate relative to the lower frame body and the working angle is adjusted, but the backrest frame cannot be turned forwards at the moment and the locking of the locking mechanism of the lower frame body cannot be released;

when the limiting slide button slides to the second working position, the unlocking button is pressed, enters the second pressing position, pulls the locking piece to enter the second unlocking position through the traction lock, the locking of the backrest frame is released at the moment, and the backrest frame can be turned forwards to release the locking of the lower frame body by the lower frame body locking mechanism, so that the seat pocket is folded.

Furthermore, spacing slide button with back frame is along first slip direction sliding fit, the unblock button with back frame is along second slip direction sliding fit, and second slip direction and first slip direction mutually perpendicular.

Furthermore, an operating part is formed at the outer end of the limiting slide button, and a limiting lug is formed at the inner end of the limiting slide button; a pressing part is formed at the outer end of the unlocking button, and a clamping groove corresponding to the limiting lug is formed at the inner end of the unlocking button;

when the limiting sliding button is located at the first working position, the limiting convex block and the clamping groove are arranged in a staggered mode, the unlocking button is pressed at the moment, the unlocking button is arranged on the inner end face of the limiting convex block in an abutting mode, and the unlocking button is located at the first pressing position;

when the limiting slide button is located at the second working position, the limiting convex block and the clamping groove are correspondingly arranged, the unlocking button is pressed at the moment, the clamping groove of the unlocking button is in inserting fit with the limiting convex block, and the unlocking button is located at the second pressing position.

Furthermore, a second return spring is arranged between the limiting slide button and the backrest frame.

Further, install the turning block on the back frame with rotating, pull the lock setting between turning block and locking piece, unblock button and turning block clearance fit press during the unblock button, the turning block changes the rotation stroke along with the stroke of pressing of unblock button, and then changes the position of locking piece through pulling the lock.

Furthermore, the lower frame body comprises a cushion frame, a seat pocket socket connected and assembled with the frame, a front handrail component and a connecting rod; the back frame lower extreme in proper order with preceding handrail subassembly the seat pocket socket rotates to be connected, the cushion frame rear side with the seat pocket socket rotates to be connected, the connecting rod upper end rotates with preceding handrail subassembly to be connected, the connecting rod lower extreme with the cushion frame front portion rotates to be connected.

Furthermore, the lower frame body locking mechanism comprises a gear arranged between the front armrest assembly and the seat pocket socket, a first tooth groove and a second tooth groove matched with the gear are formed in the front armrest assembly and the seat pocket socket respectively, and a gear spring is arranged between the gear and the first tooth groove or the second tooth groove.

Further, the extension bar on the gear passes through the opening groove of the front armrest assembly and exposes the front armrest assembly; the two ends of the locking piece are provided with a protruding upper locking block and a protruding lower blocking block, and a first return spring is arranged between the locking piece and the backrest frame; a convex gear is formed on one side of the front handrail assembly, which is close to the backrest frame, and the convex gear is provided with a plurality of locking grooves for locking the upper locking blocks of the locking pieces; the convex gear is provided with a movable groove for the lower blocking block to slide and for the lower blocking block to move circumferentially when the locking piece is positioned at a first unlocking position, and an arc-shaped groove for the lower blocking block to move circumferentially when the locking piece is positioned at a second unlocking position; the movable groove is communicated with the arc-shaped groove, and the maximum outer diameter of the movable groove is larger than that of the arc-shaped groove; an unlocking groove corresponding to the extension bar is formed in the wall of the inner cavity of the backrest frame;

when the lower frame body is in the unfolding position, the gear is clamped between the first tooth groove and the second tooth groove at the same time, and the lower frame body locking mechanism is in a locking state; the extending strip is arranged in a staggered way with the unlocking groove and is propped against the inner cavity wall of the backrest frame;

when the backrest frame is in a working position, the upper lock block of the locking piece is locked into the corresponding lock groove under the action of the first return spring, so that the backrest frame and the front armrest assembly are locked;

when the locking piece is positioned at the first unlocking position, the upper locking piece exits from the locking groove, and the backrest frame can rotate relative to the lower frame body; at the moment, the lower stop block can move in the inner circumference of the movable groove, but cannot enter the arc-shaped groove, and the backrest frame cannot be turned forwards;

when the locking piece is positioned at the second unlocking position, the upper locking piece exits the locking groove, and the backrest frame can rotate relative to the lower frame body; meanwhile, the lower blocking block enters the arc-shaped groove and can move circumferentially in the arc-shaped groove; when the lower stop block moves circumferentially in the arc-shaped groove, the backrest frame is turned forwards, when the extending strip is opposite to the unlocking groove, the gear moves axially under the action of the gear spring, the extending strip is inserted into the unlocking groove, the gear exits from the second tooth groove and completely enters the first tooth groove, and at the moment, the lower frame body locking mechanism is in an unlocking state.

Furthermore, the middle part of the locking piece is provided with a guide groove, the rotation connecting shaft among the backrest frame, the front handrail component and the seat pocket socket is arranged in the guide groove in a penetrating way, and the first return spring is arranged between the rotation connecting shaft and the guide groove.

The utility model has the advantages that: the utility model discloses the angular adjustment and the seat pocket that utilize the different motion strokes of locking piece can realize the back frame are folding, compare with prior art, need not to set up two sets of independent unlocking structure, and overall structure is simple and novel, has simplified the equipment step, the cost is reduced.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments are briefly introduced below, the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic structural view of the present invention in use;

FIG. 2 is a schematic side view of the structure of FIG. 1;

FIG. 3 is a schematic structural view of the unlocking button and the limiting slide button of FIG. 1 when they are disassembled;

FIGS. 4 and 5 are schematic views of the folding joint of FIG. 1 in an exploded manner;

FIG. 6 is a schematic view of the assembled structure of FIG. 4 at the folding joint;

FIG. 7 is a schematic view of an assembled structure at the folding joint in FIG. 5;

FIG. 8 is a schematic cross-sectional view of the top of the backrest frame when the backrest frame is in use;

fig. 9 is a schematic side sectional view of the utility model in use;

FIG. 10 is a cross-sectional view of the release button of FIG. 8 in a first depressed position;

FIG. 11 is a side cross-sectional view of the locking member of FIG. 9 in a first unlocked position;

FIG. 12 is a side view of the backrest frame after the angle is adjusted backward;

FIG. 13 is a cross-sectional view of the release button of FIG. 8 in a second depressed position;

FIG. 14 is a side cross-sectional view of the locking member of FIG. 9 in a second unlocked position;

FIG. 15 is a side view showing the backrest frame being turned forward to release the locking mechanism of the lower bracket;

FIG. 16 is a schematic view of the locking member in the locked position;

FIG. 17 is a schematic view of the lock in a first unlocked position;

fig. 18 is a schematic view of the locking member in the second unlocked position.

Wherein: a, lower support; 1 a backrest frame; 101 unlocking the groove; 2, a lower frame body locking mechanism; 201 gear wheel; 2011 extension bar; 2012 a guide ramp; 202 a first tooth slot; 203 a second gullet; 204 a gear spring; 3 locking piece; 301, locking the block; a 302 lower stop block; 303 a guide groove; 4 an unlocking button; 401 a pressing part; 402 a card slot; 5, limiting a sliding button; 501 an operation part; 502 limit bump; 6, pulling a lock; 7 a second return spring; 8, rotating the block; 9 a cushion frame; 10 seat pocket sockets; 11 a front armrest assembly; 1101 a spur gear; 1102 locking grooves; 1103 moving slot; 1104 an arc-shaped slot; 12 connecting rods; 13 first return spring.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer and more complete, the technical solutions of the embodiments of the present application will be described below with reference to the drawings of the embodiments of the present application. It should be apparent that the described embodiments are only some of the embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the application without inventive effort, are within the scope of protection of the application. It will be understood that some of the technical means of the various embodiments described herein may be replaced or combined with each other without conflict.

In the description of the present application and claims, the terms "first," "second," and the like, if any, are used solely to distinguish one from another as between described objects and not necessarily in any sequential or technical sense. Thus, an object defined as "first," "second," etc. may explicitly or implicitly include one or more of the object. Also, the use of the terms "a" or "an" and the like, do not denote a limitation of quantity, but rather denote the presence of at least one, and the terms "a" or "an" denote the presence of no less than two.

In the description of the present application and the claims, the terms "connected," "mounted," "fixed," "housed," and the like are used broadly unless otherwise indicated. For example, "connected" may be a separate connection or may be integrally connected; can be directly connected or indirectly connected through an intermediate medium; either non-removably or removably. For example, "accommodated" does not necessarily mean that the entire body is completely accommodated, and the concept also includes a partial accommodation case in which a part protrudes outward. The specific meaning of the foregoing terms in this application will be understood by those skilled in the art as the case may be.

In the description of the present application and in the claims, if there is an orientation or positional relationship indicated by the terms "upper", "lower", "horizontal", etc., based on the orientation or positional relationship shown in the drawings, it is merely for the convenience of clearly and simply describing the present application, and it is not intended to indicate or imply that the elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and these directional terms are relative concepts, are used for descriptive and clarifying purposes, and may be changed accordingly depending on the orientation in which the components in the drawings are placed. For example, if the device in the figures is turned over, elements described as "below" other elements would then be oriented "above" the other elements.

In the description of the present specification and claims, the term "if present, may generally be interchangeable with" when 8230, or "at 8230, or" in response to a determination "or" in response to a detection ", depending on the context.

In the description of the present specification and claims, if there is "direction" with respect to motion, including motion having a directional component, the term "in direction" is not necessarily to be construed as motion in only that one direction, and those skilled in the art will understand the specific meaning of the aforementioned terms in the present application as the case may be.

As shown in fig. 1 to 18, an unlocking structure of a child seat pocket includes a lower frame a having an unfolded position and a folded position, a back frame 1 capable of rotating relative to the lower frame a to adjust a front-back angle, and a lower frame locking mechanism 2 for locking the lower frame a when the lower frame a is at the unfolded position, the lower frame locking mechanism 2 can be unlocked by forward turning over the back frame 1, a slidable locking piece 3 is provided at a rotating connection between the back frame 1 and the lower frame a, and the locking piece 3 can lock the back frame 1 and the lower frame a when the back frame is at different working angles; an unlocking button 4 which can stretch and retract relative to the backrest frame 1 and a limiting slide button 5 which can limit the pressing stroke of the unlocking button 4 are arranged on the backrest frame 1, and the unlocking button 4 is directly or indirectly connected with the locking piece 3 through a traction lock 6;

the limiting slide button 5 is provided with a first working position and a second working position; the unlocking button 4 has a first pressing position and a second pressing position; the locking member 3 has a locking position, a first unlocking position and a second unlocking position;

when the limiting slide button 5 slides to a first working position, the unlocking button 4 is pressed, the unlocking button 4 enters the first pressing position, the locking piece 3 is pulled by the traction lock 6 to enter the first unlocking position and unlock the backrest frame 1, the backrest frame 1 can rotate relative to the lower frame body A and adjust the working angle, but the backrest frame 1 cannot be turned forwards at the moment and cannot unlock the lower frame body locking mechanism 2;

when spacing slide button 5 slided to the second operating position, pressed unlock button 4, unlock button 4 got into the second and pressed the position, and it got into the second unlock position through pulling 6 pulling locking pieces 3 of lock, released the locking to back frame 1 this moment to back frame 1 can turn over forward and relieve down support body locking mechanical system 2 to the locking of support body A down, and then realizes that the seat pocket is folding.

In this embodiment, the limiting slide button 5 is in sliding fit with the backrest frame 1 along a first sliding direction, the unlocking button 4 is in sliding fit with the backrest frame 1 along a second sliding direction, and the second sliding direction is perpendicular to the first sliding direction.

In this embodiment, an operation portion 501 is formed at the outer end of the limiting slide button 5, and a limiting protrusion 502 is formed at the inner end; the outer end of the unlocking button 4 is provided with a pressing part 401, and the inner end is provided with a clamping groove 402 corresponding to the limiting projection 502.

In order to improve the use safety and avoid the lower frame body A from being unlocked by mistake, a second return spring 7 is arranged between the limiting slide button 5 and the backrest frame 1 so as to facilitate the resetting of the limiting slide button 5 at any time,

in this embodiment, the unlocking button 4 is indirectly connected to the locking member 3 through a towing lock 6, and the specific implementation manner thereof is as follows: the backrest frame 1 is rotatably provided with a rotating block 8, the traction lock 6 is arranged between the rotating block 8 and the locking piece 3, the unlocking button 4 is movably matched with the rotating block 8, when the unlocking button 4 is pressed, the rotating block 8 changes the rotating stroke along with the pressing stroke of the unlocking button 4, and then the position of the locking piece 3 is changed through the traction lock 6.

In this embodiment, the lower frame body a includes a cushion frame 9, a seat pocket socket 10 connected to the frame, a front armrest assembly 11, and a connecting rod 12; the lower end of the backrest frame 1 is sequentially connected with the front armrest component 11 and the seat pocket socket 10 in a rotating mode, the rear side of the seat cushion frame 9 is connected with the seat pocket socket 10 in a rotating mode, the upper end of the connecting rod 12 is connected with the front armrest component 11 in a rotating mode, and the lower end of the connecting rod 12 is connected with the front portion of the seat cushion frame 9 in a rotating mode.

In this embodiment, the lower housing locking mechanism 2 includes a gear 201 disposed between the front handle assembly 11 and the seat pocket receptacle 10, the front handle assembly 11 and the seat pocket receptacle 10 respectively have a first tooth groove 202 and a second tooth groove 203 engaged with the gear 201 therein, and a gear spring 204 is disposed between the gear 201 and the first tooth groove 202 or the second tooth groove 203.

In this embodiment, the extension bar 2011 on the gear 201 passes through the opening slot of the front armrest assembly 11 and exposes the front armrest assembly 11; the inner cavity wall of the backrest frame 1 is provided with an unlocking groove 101 corresponding to the extension bar 2011, and the end of the extension bar 2011 is provided with a guide inclined plane 2012. The two ends of the locking piece 3 are provided with a convex upper block 301 and a convex lower block 302, and a first return spring 13 is arranged between the locking piece 3 and the backrest frame 1; a convex gear 1101 is formed on one side of the front armrest assembly 11 close to the backrest frame 1, and the convex gear 1101 is provided with a plurality of locking grooves 1102 for locking the upper locking blocks 301 of the locking pieces 3; the spur gear 1101 has a movable groove 1103 for sliding the lower stopper 302 and for circumferential movement of the lower stopper 302 when the locking member 3 is in the first unlocked position, and an arc-shaped groove 1104 for circumferential movement of the lower stopper 302 when the locking member 3 is in the second unlocked position.

In the present embodiment, the lock slot 1102 is formed on the top rear side of the convex gear 1101, the movable slot 1103 is formed on the bottom front side of the convex gear 1101, and the arc-shaped slot 1104 is formed on the bottom rear side of the convex gear 1101; the movable slot 1103 is communicated with the arc-shaped slot 1104, and the maximum outer diameter of the movable slot 1103 is larger than the maximum outer diameter of the arc-shaped slot 1104, and the minimum inner diameters of the movable slot 1103 and the arc-shaped slot 1104 are the same; the design enables the back frame 1 to rotate only in the adjusting range of the locking piece 3 in the first unlocking position, and can not be turned forwards, and the back frame 1 can be turned forwards only when the locking piece 3 is in the second unlocking position, so that the locking of the lower frame body locking mechanism 2 is released.

In this embodiment, the locking member 3 is configured to slide radially, and the specific mounting manner thereof is as follows: the middle part of the locking piece 3 is provided with a guide groove 303, a rotating connecting shaft between the backrest frame 1, the front handrail component 11 and the seat pocket socket 10 is arranged in the guide groove 303 in a penetrating way, and the first return spring 13 is arranged between the rotating connecting shaft and the guide groove 303.

The utility model discloses a theory of operation does:

when the lower frame body A is in the unfolding position, the gear 201 is clamped between the first tooth groove 202 and the second tooth groove 203 at the same time, and the lower frame body locking mechanism 2 is in a locking state; the extending bar 2011 of the gear 201 is arranged in a staggered way with the unlocking slot 101 and is propped against the inner cavity wall of the backrest frame 1.

When the backrest frame 1 is located at the working position, the upper locking block 301 of the locking piece 3 is locked into the corresponding locking groove 1102 under the action of the first return spring 13, so that the backrest frame 1 and the front armrest assembly 11 are locked; at this time, the lock member 3 is in the lock position;

when the limiting slide button 5 is located at the first working position, the limiting projection 502 and the clamping groove 402 are arranged in a staggered manner, at this time, the unlocking button 4 is pressed, the unlocking button 4 is propped against the inner end face of the limiting projection 502, and the unlocking button 4 is located at the first pressing position; the locking piece 3 is pulled by the traction lock 6 to enter a first unlocking position, the upper locking piece 301 exits from the locking groove, and the backrest frame 1 can rotate relative to the lower frame body A; at this time, the lower stopper 302 can move in the inner circumference of the movable groove 1103 but cannot enter the arc-shaped groove 1104, and the backrest frame 1 cannot be turned forward. Namely, at this time, the backrest frame 1 can rotate relative to the lower frame body A and adjust the working angle, but the locking of the lower frame body locking mechanism 2 cannot be released at this time;

when the limiting slide button 5 is located at the second working position, the limiting projection 502 and the slot 402 are correspondingly arranged, at this time, the unlocking button 4 is pressed, the slot 402 of the unlocking button 4 is in insertion fit with the limiting projection 502, and the unlocking button 4 is located at the second pressing position; the locking piece 3 is pulled by the traction lock 6 to enter a second unlocking position, the upper locking piece 301 exits from the locking groove, and the backrest frame 1 can rotate relative to the lower frame body A; at the same time, the lower stop 302 enters the arcuate slot 1104 and is circumferentially movable therein; when the lower block 302 moves circumferentially in the arc-shaped groove 1104, the backrest frame 1 is turned forward, and when the extension bar 2011 faces the unlocking groove 101, under the action of the gear spring 204, the gear 201 moves axially, the extension bar 2011 is inserted into the unlocking groove 101, the gear 201 exits from the second gear groove 203 and completely enters the first gear groove 202, and at this time, the lower frame body locking mechanism 2 is in an unlocking state. That is, at this time, the locking of the back frame 1 is released, and the locking of the lower frame body a by the lower frame body locking mechanism 2 can be released, thereby realizing the folding of the seat pocket.

The utility model discloses the angular adjustment and the seat pocket that utilize the different motion strokes of locking piece can realize the back frame are folding, compare with prior art, need not to set up two sets of independent unlocking structure, and overall structure is simple and novel, has simplified the equipment step, the cost is reduced.

The above is only a specific application example of the present invention, and does not set any limit to the protection scope of the present invention. In addition to the above embodiments, other embodiments of the present invention are also possible. All technical solutions formed by adopting equivalent substitution or equivalent transformation fall within the scope of the present invention as claimed.

Claims (9)

1. The utility model provides an unlocking structure of children's seat pocket, is including having lower frame (A) of expansion position and folding position, can relatively lower frame (A) rotate back frame (1) of angle around adjusting and to realize lower frame locking mechanical system (2) of locking to it when expansion position, its characterized in that: the lower frame body locking mechanism (2) can be unlocked by forward turning over the backrest frame (1), a slidable locking piece (3) is arranged at the rotating connection part of the backrest frame (1) and the lower frame body (A), and the locking piece (3) can lock the backrest frame (1) and the lower frame body (A) when the backrest frame is positioned at different working angles; the backrest frame (1) is provided with an unlocking button (4) which can stretch relative to the backrest frame and a limiting sliding button (5) which can limit the pressing stroke of the unlocking button (4), and the unlocking button (4) is directly or indirectly connected with the locking piece (3) through a traction lock (6);

the limiting sliding button (5) is provided with a first working position and a second working position; the unlocking button (4) has a first pressing position and a second pressing position; the locking piece (3) has a locking position, a first unlocking position and a second unlocking position;

when the limiting sliding button (5) slides to a first working position, the unlocking button (4) is pressed, the unlocking button (4) enters the first pressing position, the locking piece (3) is pulled by the traction lock (6) to enter the first unlocking position and the locking of the backrest frame (1) is released, at the moment, the backrest frame (1) can rotate relative to the lower frame body (A) and the working angle is adjusted, but at the moment, the backrest frame (1) cannot be turned forwards and the locking of the lower frame body locking mechanism (2) cannot be released;

when spacing slide button (5) slided to the second operating position, pressed unlock button (4), unlock button (4) got into the second and pressed the position, and it got into second unblock position through pulling lock (6) pulling locking piece (3), released the locking to back frame (1) this moment to back frame (1) can be turned over forward and removed lower support body locking mechanical system (2) to the locking of lower support body (A), and then realize that the seat pocket is folding.

2. The unlocking structure of a seat pocket for children as claimed in claim 1, wherein: spacing slide button (5) with back frame (1) is along first slip direction sliding fit, unlock button (4) with back frame (1) is along second slip direction sliding fit, and second slip direction and first slip direction mutually perpendicular.

3. The unlocking structure of a seat pocket for children as claimed in claim 2, wherein: an operation part (501) is formed at the outer end of the limiting slide button (5), and a limiting lug (502) is formed at the inner end of the limiting slide button; a pressing part (401) is formed at the outer end of the unlocking button (4), and a clamping groove (402) corresponding to the limiting bump (502) is formed at the inner end of the unlocking button;

when the limiting slide button (5) is located at a first working position, the limiting convex block (502) and the clamping groove (402) are arranged in a staggered mode, the unlocking button (4) is pressed at the moment, the unlocking button (4) is arranged on the inner end face of the limiting convex block (502) in a propping mode, and the unlocking button (4) is located at the first pressing position;

when the limiting slide button (5) is located at the second working position, the limiting convex block (502) of the limiting slide button and the clamping groove (402) are correspondingly arranged, the unlocking button (4) is pressed at the moment, the clamping groove (402) of the unlocking button (4) is in inserting fit with the limiting convex block (502), and the unlocking button (4) is located at the second pressing position.

4. An unlocking structure of a seat bag for children according to claim 2 or 3, wherein: a second return spring (7) is arranged between the limiting slide button (5) and the backrest frame (1).

5. An unlocking structure of a seat bag for children according to claim 1, 2 or 3, wherein: install turning block (8) on back frame (1) with rotating, pull lock (6) and set up between turning block (8) and locking piece (3), unblock button (4) and turning block (8) clearance fit press during unblock button (4), turning block (8) change the rotation stroke along with the stroke of pressing of unblock button (4), and then change the position of locking piece (3) through pulling lock (6).

6. The unlocking structure of a seat pocket for children as claimed in claim 1, wherein: the lower frame body (A) comprises a cushion frame (9), a seat pocket socket (10) connected and assembled with the frame, a front handrail component (11) and a connecting rod (12); the backrest frame (1) lower extreme in proper order with preceding handrail component (11) seat pocket socket (10) rotate to be connected, cushion frame (9) rear side with seat pocket socket (10) rotate to be connected, connecting rod (12) upper end is rotated with preceding handrail component (11) and is connected, connecting rod (12) lower extreme with the anterior rotation of cushion frame (9) is connected.

7. The unlocking structure of a seat pocket for children as claimed in claim 6, wherein: lower support body locking mechanical system (2) including set up preceding handrail subassembly (11) with gear (201) between seat pocket socket (10), preceding handrail subassembly (11) with have respectively in seat pocket socket (10) with gear (201) complex first tooth's socket (202) and second tooth's socket (203), be provided with gear spring (204) between gear (201) and first tooth's socket (202) or second tooth's socket (203).

8. The unlocking structure of a seat pocket for children as claimed in claim 7, wherein: an extension bar (2011) on the gear (201) passes through an open slot of the front handrail assembly (11) and exposes the front handrail assembly (11); an unlocking groove (101) corresponding to the extending strip (2011) is formed in the inner cavity wall of the backrest frame (1); two ends of the locking piece (3) are provided with a convex upper block (301) and a convex lower block (302), and a first return spring (13) is arranged between the locking piece (3) and the backrest frame (1); a convex gear (1101) is formed on one side, close to the backrest frame (1), of the front armrest assembly (11), and the convex gear (1101) is provided with a plurality of locking grooves (1102) for locking upper blocks (301) of the locking pieces (3); the convex gear (1101) is provided with a movable groove (1103) for sliding of the lower stop (302) and circumferential movement of the lower stop (302) when the locking piece (3) is in a first unlocking position, and an arc-shaped groove (1104) for circumferential movement of the lower stop (302) when the locking piece (3) is in a second unlocking position; the movable groove (1103) is communicated with the arc-shaped groove (1104), and the maximum outer diameter of the movable groove (1103) is larger than that of the arc-shaped groove (1104);

when the lower frame body (A) is in the unfolding position, the gear (201) is clamped between the first tooth groove (202) and the second tooth groove (203) at the same time, and the lower frame body locking mechanism (2) is in a locking state; the extending strip (2011) is arranged in a staggered way with the unlocking groove (101) and is propped against the inner cavity wall of the backrest frame (1);

when the backrest frame (1) is located at a working position, the upper locking block (301) of the locking piece (3) is locked into the corresponding locking groove (1102) under the action of the first return spring (13), so that the backrest frame (1) and the front armrest assembly (11) are locked;

when the locking piece (3) is located at a first unlocking position, the upper locking piece (301) is withdrawn out of the locking groove, and the backrest frame (1) can rotate relative to the lower frame body (A); at the moment, the lower stop block (302) can move in the inner circumference direction of the movable groove (1103) but cannot enter the arc-shaped groove (1104), and the backrest frame (1) cannot be turned forwards;

when the locking piece (3) is located at a second unlocking position, the upper locking piece (301) is withdrawn out of the locking groove, and the backrest frame (1) can rotate relative to the lower frame body (A); meanwhile, the lower stop block (302) enters the arc-shaped groove (1104) and can move circumferentially in the arc-shaped groove; when the lower stop block (302) moves in the circumferential direction in the arc-shaped groove (1104), the backrest frame (1) is turned forwards, when the extending strip (2011) is opposite to the unlocking groove (101), under the action of the gear spring (204), the gear (201) moves axially, the extending strip (2011) is inserted into the unlocking groove (101), the gear (201) exits from the second tooth groove (203) and completely enters the first tooth groove (202), and at the moment, the lower frame body locking mechanism (2) is in an unlocking state.

9. The unlocking structure of a seat pocket for children as claimed in claim 8, wherein: locking piece (3) middle part has guide way (303), back frame (1) preceding handrail component (11) with rotation connecting axle between seat pocket socket (10) is worn to establish in guide way (303), just first reset spring (13) set up and rotate between connecting axle and guide way (303).

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