CN112678064B - Child seat - Google Patents

Abstract

The embodiment of the invention provides a child seat, which relates to the field of production of children vehicles and comprises a seat plate, a back plate and a transmission piece, wherein the back plate is rotatably connected to the seat plate, the transmission piece is simultaneously connected with the seat plate and the back plate, and the transmission piece is used for driving the seat plate to rotate towards a direction close to the back plate under the rotation action of the back plate. The child seat can rotate in opposite directions simultaneously by the back plate and the seat plate in the folding process, can complete folding operation more rapidly, and improves folding efficiency.

Description

Child seat

Cross Reference to Related Applications

The present disclosure claims priority from chinese patent application number 2020114516035, entitled "a child seat," filed on 10/12/2020, the entire contents of which are incorporated herein by reference.

Technical Field

The invention relates to the field of production of kids, in particular to a child seat.

Background

Generally, for carrying and convenient to use, child seat all possesses folding function, and the child seat after folding can reduce space occupation, conveniently carries. In the existing child seat folding process, the back plate is usually folded to the position where the seat plate is located directly, so that the folding efficiency is low.

Disclosure of Invention

The present invention aims to provide a child seat which can effectively improve the aforementioned technical problems.

Embodiments of the present invention are implemented as follows:

In a first aspect, the present invention provides a child seat, including a seat board, a back board and a transmission member, where the back board is rotatably connected to the seat board, and the transmission member is connected to the seat board and the back board at the same time, and the transmission member is configured to drive the seat board to rotate in a direction approaching to the back board under the rotation action of the back board.

In an alternative embodiment, the transmission member includes a first connecting seat, a second connecting seat and a transmission shaft, the first connecting seat is connected with the back plate, the second connecting seat is connected with the seat plate, one end of the transmission shaft is movably matched with the first connecting seat, and the other end of the transmission shaft is movably matched with the second connecting seat.

In an alternative embodiment, the first connecting seat is provided with a first bar-shaped hole, the second connecting seat is provided with a second bar-shaped hole, one end of the transmission shaft is movably embedded in the first bar-shaped hole, and the other end of the transmission shaft is movably embedded in the second bar-shaped hole.

In an alternative embodiment, the first bar-shaped hole comprises a first hole section and a second hole section which are communicated with each other, the transmission shaft is used for being matched with the first hole section or the second hole section in a switchable manner under the rotation action of the back plate, and the seat plate is used for being driven by the transmission shaft under the condition that the transmission shaft is matched with the second hole section and rotating towards the direction approaching to the back plate.

In an alternative embodiment, the first hole section and the second hole section are arc sections, the first connecting seat rotates around a rotation axis line, the rotation axis line passes through a circle center corresponding to the first hole section, and the curvature radius of the second hole section is larger than that of the first hole section.

In an alternative embodiment, the first connecting seat comprises a first seat body and a first reinforcing plate, the second connecting seat comprises a second seat body and a second reinforcing plate, the first seat body is connected with the back plate, the second seat body is connected with the seat plate, the first reinforcing plate is installed on one side, close to the second seat body, of the first seat body, the second reinforcing plate is installed on one side, close to the first seat body, of the second seat body, and the transmission shaft is in movable fit with the first seat body, the second reinforcing plate, the second seat body and the second reinforcing plate simultaneously.

In an alternative embodiment, the child seat further includes a frame, a connection shell, and a first limiting member, the second connection seat is provided with a second notch, the connection shell is connected to the frame, the first limiting member is movably connected to the connection shell, and the first limiting member is used for being clamped into or separated from the second notch, so that the second connection seat is locked on the connection shell or unlocked from the connection shell.

In an alternative embodiment, the first connecting seat is provided with a first notch, the first notch is provided with a guiding inclined wall, and the guiding inclined wall is used for propping the first limiting piece under the action of rotation of the first connecting seat so as to prop the first limiting piece out of the second notch.

In an alternative embodiment, the child seat further includes a first spring, the connection housing is provided with a first mating cavity mated with the first limiting member, the first spring is accommodated in the first mating cavity, one end of the first spring is abutted to the bottom wall of the first mating cavity, the other end of the first spring is abutted to the first limiting member, and the first spring is used for propping the first limiting member into the second notch.

In an alternative embodiment, the child seat further comprises a second limiting member and a gear disc, the second limiting member is movably mounted on the first connecting seat, the gear disc is mounted on one side, close to the first connecting seat, of the connecting shell, a plurality of limiting holes are formed in the peripheral wall of the gear disc, and the second limiting member is used for being matched with one of the limiting holes, or is used for being slidably abutted to the peripheral wall between two adjacent limiting holes.

In an alternative embodiment, the first connecting seat is provided with a first abutting bulge, the gear plate is provided with an avoidance hole, the child seat further comprises a transmission plate and a fixing seat used for being connected with the frame, the transmission plate and the gear plate are arranged in a stacked mode, one side, close to the gear plate, of the transmission plate is provided with a second abutting bulge, the transmission plate is installed on the fixing seat, and the transmission plate is detachably installed on the connecting shell to be switched between a first state and a second state;

In the first state, the transmission disc is arranged on the connecting shell, the second abutting protrusion penetrates through the avoidance hole, and the connecting shell is fixed relative to the fixing base;

in the second state, the first abutting protrusion is used for supporting the second abutting protrusion to separate the transmission disc from the connection shell when the first connection seat rotates to a preset position along with the back plate, and the connection shell and the transmission disc both rotate relative to the fixed seat along with the first connection seat.

In an alternative embodiment, the child seat further includes a third spring, the third spring is disposed between the driving disc and the fixing base, two ends of the third spring are respectively abutted to the driving disc and the fixing base, the third spring is used for being compressed in the second state, and the third spring is used for driving the driving disc to return to the initial position under the condition that the first abutting protrusion and the second abutting protrusion are separated.

In an alternative embodiment, an annular transmission groove is formed in the transmission disc, and the second abutting protrusion is convexly arranged in the transmission groove;

Wherein, in the first state, the first abutting protrusion is in sliding fit with the transmission groove.

In an alternative embodiment, a transition inclined wall is further provided on the driving disc, the transition inclined wall extending from the bottom wall of the driving groove to the top wall of the second abutment protrusion, the transition inclined wall being used for guiding the first abutment protrusion to move from the driving groove to the top wall of the second abutment protrusion so as to support the second abutment protrusion.

In an alternative embodiment, the child seat further includes a second spring, one end of the second spring is connected to the first connection seat, the other end of the second spring abuts against the second limiting member, and the second spring is used for pressing the second limiting member into the limiting hole under the action of restoring force.

In an optional embodiment, the child seat further comprises a traction wire and a connector, one end of the traction wire is connected with the connector, the second limiting piece is provided with a clamping groove, the connector is embedded into the clamping groove, and the traction wire is used for pulling the second limiting piece to be separated from the limiting hole through the connector.

The beneficial effects of the embodiment of the invention include, for example:

The embodiment of the invention provides a child seat, which comprises a seat board, a back board and a transmission piece, wherein the back board is rotatably connected with the seat board, and the transmission piece is simultaneously connected with the seat board and the back board. After the back plate is operated by a user to rotate, the back plate can drive the transmission piece to move, and the transmission piece drives the seat plate to rotate towards the direction close to the back plate. Therefore, in the folding process of the child seat, the back plate and the seat plate can rotate in opposite directions at the same time, so that folding operation can be completed more rapidly, and folding efficiency is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural view of a child seat according to an embodiment of the present invention at a first view angle;

FIG. 2 is an exploded view of a child seat according to an embodiment of the present invention;

FIG. 3 is a schematic view of a child seat according to an embodiment of the present invention at a second view angle;

FIG. 4 is an enlarged schematic view of FIG. 3 at A;

FIG. 5 is a schematic structural view of a first reinforcing plate according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of a first seat body according to an embodiment of the present invention;

FIG. 7 is a schematic structural diagram of a second reinforcing plate according to an embodiment of the present invention;

Fig. 8 is a schematic structural diagram of a second seat body according to an embodiment of the present invention;

Fig. 9 is a schematic structural diagram of the first connecting seat, the first limiting member and the second reinforcing plate according to the embodiment of the present invention;

FIG. 10 is a schematic view of a child seat according to an embodiment of the present invention at a third view angle;

FIG. 11 is an enlarged schematic view at B in FIG. 10;

fig. 12 is a schematic structural diagram of a gear disc according to an embodiment of the present invention under a first view angle;

fig. 13 is a schematic structural view of a second limiting member according to an embodiment of the present invention;

fig. 14 is a schematic structural view of a connection housing according to an embodiment of the present invention;

Fig. 15 is a schematic structural diagram of a gear disc under a second view angle according to an embodiment of the present invention;

Fig. 16 is a schematic structural view of a second limiting member, a second spring, a traction wire and a connector according to an embodiment of the present invention;

fig. 17 is a schematic structural diagram of a driving disc according to an embodiment of the present invention.

The icons include 1-child seat, 11-seat pan, 12-back plate, 13-transmission piece, 131-first connecting seat, 1311-first seat body, 1312-first reinforcement plate, 1313-first abutment boss, 132-second connecting seat, 1321-second seat body, 1322-second reinforcement plate, 133-transmission shaft, 134-first bar hole, 1341-first hole section, 1342-second hole section, 135-second bar hole, 136-first notch, 1361-guiding inclined wall, 137-second notch, 138-chute, 139-second mating cavity, 14-connecting shaft, 16-connecting shell, 161-first mating cavity, 162-chute, 17-first stopper, 18-fixed seat, 21-first spring, 22-second stopper, 221-slider, 222-bump, 223-neck, 23-stopper, 231-stopper hole, 232-tooth wheel disc, 233-hole, 24-second spring, 25-wire, 26-connector, 27-second stopper, 27-neck, 29-third stopper, and transition spring 284.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. 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.

It should be noted that like reference numerals and letters refer to like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present invention, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships conventionally put in use of the inventive product, are merely for convenience of describing the present invention and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal," "vertical," and the like do not denote a requirement that the component be absolutely horizontal or overhang, but rather may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, integrally connected, mechanically connected, electrically connected, directly connected, indirectly connected through an intermediary, or in communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

Referring to fig. 1 and 2, the present embodiment provides a child seat 1, where the child seat 1 includes a seat plate 11, a back plate 12, and a transmission member 13, the back plate 12 is rotatably connected to the seat plate 11, and the transmission member 13 is simultaneously connected to the seat plate 11 and the back plate 12. After the user operates the back plate 12 to rotate, the back plate 12 can drive the transmission piece 13 to move, and the transmission piece 13 drives the seat plate 11 to rotate towards the direction close to the back plate 12. Thus, in the folding process of the child seat 1, the back plate 12 and the seat plate 11 can simultaneously rotate in opposite directions, so that the folding operation can be completed more rapidly, and the folding efficiency is improved.

In fig. 1, for example, in the right view of fig. 1, the above-mentioned "the back plate 12 and the seat plate 11 rotate simultaneously and opposite to each other" may be understood as that the back plate 12 rotates counterclockwise and the seat plate 11 rotates clockwise.

Referring to fig. 2, in the present embodiment, the transmission member 13 includes a first connecting seat 131, a second connecting seat 132, and a transmission shaft 133, wherein the first connecting seat 131 is connected with the back plate 12, the second connecting seat 132 is connected with the seat plate 11, one end of the transmission shaft 133 is movably matched with the first connecting seat 131, and the other end of the transmission shaft 133 is movably matched with the second connecting seat 132.

Thus, in the process of rotating the back plate 12, the first connecting seat 131 rotates along with the back plate 12, and after the first connecting seat 131 rotates by a certain angle, the transmission shaft 133 can act on the transmission shaft 133, and the transmission shaft 133 drives the second connecting seat 132 to rotate, so that the seat plate 11 is driven to rotate.

It should be noted that, the manner in which the transmission shaft 133 is movably matched with the first connecting seat 131 may be that the transmission shaft 133 is movably matched with the groove, or may be that the transmission shaft 133 is movably matched with the hole, or may be that the transmission shaft is in transmission fit with the rack. Similarly, the manner in which the drive shaft 133 is in a clearance fit with the second connection mount 132 may be a clearance fit between the drive shaft 133 and the slot, or may be a clearance fit between the drive shaft 133 and the bore, or may be a drive fit between a gear and a rack.

Referring to fig. 3 and 4, in the present embodiment, the first connecting seat 131 is provided with a first bar hole 134, the second connecting seat 132 is provided with a second bar hole 135, one end of the transmission shaft 133 is movably embedded in the first bar hole 134, and the other end of the transmission shaft 133 is movably embedded in the second bar hole 135.

It should be noted that, during the process that the first connecting seat 131 rotates along with the back plate 12, the first bar-shaped hole 134 moves relative to the transmission shaft 133, and the transmission shaft 133 may move to different areas of the first bar-shaped hole 134, that is, may be regarded as that the transmission shaft 133 moves along the extending direction of the first bar-shaped hole 134.

It should be noted that, in the present embodiment, after the transmission shaft 133 moves into a part of the area of the first strip-shaped hole 134, the inner wall of the first strip-shaped hole 134 can apply a force to the transmission shaft 133, and then the transmission shaft 133 applies a force to the second connection seat 132, so as to finally drive the seat board 11 to rotate in a direction approaching to the back board 12.

Specifically, referring to fig. 4, in the present embodiment, the first bar-shaped hole 134 includes a first hole section 1341 and a second hole section 1342 that are mutually communicated, and the transmission shaft 133 is configured to be switchably engaged with the first hole section 1341 or the second hole section 1342 under the rotation action of the back plate 12. That is, the drive shaft 133 may move within the first bore section 1341 or within the second bore section 1342 during rotation of the first coupling mount 131 following the back plate 12.

Also, in the present embodiment, if the transmission shaft 133 enters the second hole section 1342, the inner wall of the second hole section 1342 will press against the transmission shaft 133, so that the transmission shaft 133 will apply a force to the inner wall of the first bar-shaped hole 134, so that the first connection seat 131 rotates, thereby driving the seat plate 11 to rotate as a whole.

In this embodiment, the first hole section 1341 and the second hole section 1342 are arc sections, and the radius of curvature of the second hole section 1342 is larger than that of the first hole section 1341. That is, the curvature of the second aperture section 1342 is less than the curvature of the first aperture section 1341. After the transmission shaft 133 enters the second hole section 1342, the original track of the transmission shaft 133 is changed under the action of the inner wall of the second hole section 1342, so that an acting force is applied to the inner wall of the first strip-shaped hole 134, and finally the seat board 11 is driven to rotate towards the direction approaching to the back board 12.

In other embodiments, the first hole section 1341 and the second hole section 1342 may be straight lines, and the extending direction of the first hole section 1341 and the extending direction of the second hole section 1342 are Bo Ping lines. Or the first aperture section 1341 is a straight line section and the second aperture section 1342 is an arc section. Or the first aperture section 1341 is an arc section and the second aperture section 1342 is a straight section.

In addition, in the present embodiment, the first connecting base 131 rotates around a rotation axis, and the rotation axis passes through a center of a circle corresponding to the first hole section 1341. That is, in the present embodiment, the first hole section 1341 is a circular arc section. During the rotation of the first coupling holder 131, if the driving shaft 133 moves in the first hole section 1341, the inner wall of the first hole section 1341 does not apply a force to the driving shaft 133, and the second coupling holder 132 and the seat plate 11 do not rotate. During the movement of the transmission shaft 133 in the first hole section 1341, an operator can adjust the inclination angle of the back plate 12, and the inclination angle of the back plate 12 can be adjusted in multiple steps, which will be described in detail later.

In the present embodiment, the first coupling seat 131 and the second coupling seat 132 coaxially rotate. That is, the first and second connection sockets 131 and 132 are rotated about the same rotational axis.

Specifically, referring to fig. 2 and 3, in the present embodiment, the child seat 1 further includes a connecting shaft 14, and the first connecting seat 131 and the second connecting seat 132 are simultaneously sleeved on the connecting shaft 14. The aforementioned axis of rotation is collinear with the axis of the connecting shaft 14.

It should be noted that, in the present embodiment, the extending direction of the first bar-shaped hole 134 is adapted to the moving direction of the transmission shaft 133 relative to the first connecting seat 131, so that it is ensured that the first connecting seat 131 and the transmission shaft 133 are not easy to be blocked during the rotation of the first connecting seat 131.

Referring to fig. 2 and fig. 4-8, in the present embodiment, the first connecting seat 131 includes a first seat body 1311 and a first reinforcing plate 1312, the second connecting seat 132 includes a second seat body 1321 and a second reinforcing plate 1322, the first seat body 1311 is connected with the back plate 12, the second seat body 1321 is connected with the seat plate 11, the first reinforcing plate 1312 is mounted on a side of the first seat body 1311 near the second seat body 1321, the second reinforcing plate 1322 is mounted on a side of the second seat body 1321 near the first seat body 1311, and the transmission shaft 133 is movably matched with the first seat body 1311, the first reinforcing plate 1312, the second seat body 1321 and the second reinforcing plate 1322.

It should be noted that, the first reinforcing plate 1312 and the second reinforcing plate 1322 can enhance the connection strength between the first seat body 1311 and the second seat body 1321, so that the whole folding process is more stable, and the service life of the child seat 1 can be prolonged.

Alternatively, the first reinforcing plate 1312 and the second reinforcing plate 1322 may be selected from a steel plate, an iron plate, and the like.

Referring to fig. 5 to 8, in the present embodiment, the first seat body 1311 and the first reinforcing plate 1312 are both provided with the first bar-shaped hole 134. The second seat body 1321 and the second reinforcing plate 1322 are provided with the second bar-shaped hole 135. The transmission shaft 133 passes through the first bar-shaped hole 134 on the first seat body 1311, the first bar-shaped hole 134 on the first reinforcing plate 1312, the second bar-shaped hole 135 on the second reinforcing plate 1322, and the second bar-shaped hole 135 on the second seat body 1321 at the same time.

In other embodiments, the aforementioned first bar-shaped hole 134 may be provided only on the first seat body 1311. Or the aforementioned first bar-shaped holes 134 may be provided only on the first reinforcing plate 1312.

Similarly, in other embodiments, the aforementioned second bar-shaped hole 135 may be provided only on the second seat body 1321. Or the second reinforcing plate 1322 may be provided with only the aforementioned second bar-shaped holes 135.

Referring to fig. 5 and 6, in the present embodiment, the first reinforcement plate 1312 is provided with a first hole section 1341 and a second hole section 1342 communicating with each other, and the first seat body 1311 is also provided with a first hole section 1341 and a second hole section 1342 communicating with each other. The first aperture section 1341 on the first reinforcement plate 1312 is disposed in alignment with the first aperture section 1341 on the first seat body 1311. The second aperture section 1342 on the first reinforcement plate 1312 is disposed in alignment with the second aperture section 1342 on the first seat body 1311. Thus, the transmission shaft 133 can be conveniently penetrated, and the transmission shaft 133 is not easy to be blocked when relatively moving in the two first strip-shaped holes 134.

Referring to fig. 7 and 8, in the present embodiment, the second bar-shaped hole 135 of the second seat body 1321 and the second bar-shaped hole 135 of the second reinforcing plate 1322 are aligned. Thus, the transmission shaft 133 can be conveniently penetrated, and the transmission shaft 133 is not easy to be blocked when relatively moving in the two second strip-shaped holes 135.

Alternatively, in actual manufacturing, the first reinforcing plate 1312 and the first seat body 1311 may be connected by welding, bonding, or the like. The second reinforcing plate 1322 and the second seat body 1321 may be connected by welding, bonding, or the like.

Referring to fig. 1, 2, 4, 7 and 9, in this embodiment, the child seat 1 further includes a frame (not shown), a connecting shell 16 and a first limiting member 17, the second connecting seat 132 is provided with a second notch 137, the connecting shell 16 is connected to the frame, the first limiting member 17 is movably connected to the connecting shell 16, and the first limiting member 17 is used for being clamped into or separated from the second notch 137, so as to lock the second connecting seat 132 on the connecting shell 16 or unlock the second connecting seat 132 from the connecting shell 16.

It should be noted that the "the second connecting seat 132 is provided with the second notch 137" may be understood that only the second reinforcing plate 1322 is provided with the second notch 137. Or the second notch 137 may be provided only in the second seat body 1321. Or the second seat body 1321 and the second reinforcing plate 1322 are provided with the second notch 137, and the second notch 137 on the second seat body 1321 and the second notch 137 of the second reinforcing plate 1322 are aligned.

When the first limiting member 17 is engaged with the second notch 137, the second connecting seat 132 and the connecting housing 16 are in a relatively locked state. Since the connection housing 16 is mounted on the frame in the present embodiment, the second connection seat 132 is in a relatively locked state with the frame in a state that the first stopper 17 is caught in the second notch 137. That is, at this time, the second connecting seat 132 and the seat plate 11 cannot rotate with respect to the frame.

It should be noted that, when the first limiting member 17 is separated from the second notch 137, the second connecting seat 132 is unlocked from the connecting housing 16, that is, the second connecting seat 132 may rotate relative to the frame under the action of an external force.

In this embodiment, the rotation of the back plate 12 may be understood as the rotation of the back plate 12 relative to the frame, and the rotation of the seat plate 11 may be understood as the rotation of the seat plate 11 relative to the frame.

Referring to fig. 4-6 and 9, in the present embodiment, the first connecting base 131 is provided with a first notch 136, and the first notch 136 is provided with a guiding inclined wall 1361. Under the condition that the first connecting seat 131 rotates, the guiding inclined wall 1361 gradually approaches the first limiting member 17, and under the condition that the guiding inclined wall 1361 continuously rotates, the guiding inclined wall 1361 supports the first limiting member 17 and finally ejects the first limiting member 17 out of the second notch 137, so that the second connecting seat 132 is switched from the locking state to the unlocking state, and the second connecting seat 132 and the seat plate 11 can rotate towards the direction approaching the back plate 12.

It should be noted that, the aforementioned "the first connecting seat 131 is provided with the first notch 136" may be understood that only the first notch 136 is provided on the first seat body 1311. Or only the first reinforcing plate 1312 may be provided with the first notch 136. Or the first seat body 1311 and the first reinforcing plate 1312 are provided with first notches 136, and the two first notches 136 are aligned with each other.

Referring to fig. 4, in this embodiment, the child seat 1 further includes a first spring 21, a first fitting cavity 161 that mates with the first limiting member 17 is disposed in the connection housing 16, the first spring 21 is accommodated in the first fitting cavity 161, and one end of the first spring 21 abuts against a bottom wall of the first fitting cavity 161, and the other end of the first spring 21 abuts against the first limiting member 17.

Thus, the second notch 137 may be rotated into alignment with the first stop 17 during deployment of the child seat 1 from the collapsed condition. At this time, the first stopper 17 may be abutted into the second notch 137 by the first spring 21, so that the second connecting seat 132 is switched from the unlocked state to the locked state, and the second connecting seat 132 and the seat plate 11 cannot rotate with respect to the frame at this time.

Referring to fig. 10-15, in combination with fig. 2, the child seat 1 further includes a second limiting member 22 and a gear disc 23, wherein the second limiting member 22 is movably mounted on the first connecting seat 131, the gear disc 23 is mounted on a side of the connecting shell 16 close to the first connecting seat 131, and a plurality of limiting holes 231 are formed in a peripheral wall of the gear disc 23.

It will be appreciated that, in the case where the second limiting member 22 is not engaged in the limiting hole 231, the second limiting member 22 may rotate along with the first connecting seat 131 during the rotation of the back plate 12 and the first connecting seat 131, and the second limiting member 22 may move on the peripheral wall between two adjacent limiting holes 231. When the second limiting member 22 moves into one of the limiting holes 231, the first connecting seat 131 and the back plate 12 cannot rotate relative to the frame, and the first connecting seat 131 and the frame are in a relatively locked state.

In this embodiment, the back plate 12 and the first connecting seat 131 may have multiple rotational strokes, and when the second limiting member 22 is engaged with different limiting holes 231, the inclination angles of the back plate 12 and the first connecting seat 131 are different, so that a user can adjust the second limiting member 22 to engage with different limiting holes 231 according to actual requirements.

Optionally, the number of the limiting holes 231 is four, and the back plate 12 and the first connecting seat 131 can be adjusted in four steps. The first connecting seat 131 rotates in the first gear, the second gear or the third gear, the transmission shaft 133 moves in the first hole section 1341, and the first connecting seat 131 does not drive the second connecting seat 132 and the seat plate 11 to rotate, and only changes the inclination angle of the back plate 12. The first connecting seat 131 rotates under the condition of fourth gear, the transmission shaft 133 enters the second hole section 1342, and the inclined guide wall 1361 ejects the first limiting piece 17 out of the second notch 137, the second connecting seat 132 is in an unlocking state, and the first connecting seat 131 can drive the second connecting seat 132 and the seat board 11 to rotate through the transmission shaft 133, so that folding efficiency is improved.

Referring to fig. 15 and 16, in this embodiment, a gear disc 232 is disposed on the gear disc 23, a tooth slot 162 is disposed on the connection housing 16, the gear disc 232 is embedded in the tooth slot 162, the gear disc 23 and the connection housing 16 are in a relatively fixed state, and two independent components of the gear disc 23 and the connection housing 16 can be separately formed, so that the production and the manufacturing are convenient.

Referring to fig. 6 and 13, in the present embodiment, the first connecting seat 131 is provided with a chute 138, the second limiting member 22 includes a slider 221 and a protrusion 222, the slider 221 is movably embedded in the chute 138, the protrusion 222 protrudes relative to the slider 221, and the protrusion 222 can be locked into or disengaged from the limiting hole 231.

Referring to fig. 11, in this embodiment, the child seat 1 further includes a second spring 24, one end of the second spring 24 is connected to the first connecting seat 131, and the other end of the second spring 24 abuts against the second limiting member 22.

When the protrusion 222 is separated from the limiting hole 231, the sliding block 221 slides in the sliding groove 138, and the sliding block 221 can press the second spring 24. That is, in the process that the protrusion 222 slides on the peripheral wall between the two limiting holes 231, the second spring 24 is in a compressed state, and when the protrusion 222 moves to a position corresponding to one of the limiting holes 231, the second spring 24 can push the protrusion 222 into the limiting hole 231 under the action of the restoring force, so that the first connecting seat 131 and the back plate 12 are locked on the rack.

Specifically, in the present embodiment, the first connecting seat 131 is provided with the second mating cavity 139 therein, and an end of the second spring 24 remote from the second limiting member 22 is mounted on an inner wall of the second mating cavity 139.

Referring to fig. 2, 6, 15 and 17, in the present embodiment, a first abutment protrusion 1313 is provided on the first seat body 1311, a avoidance hole 233 is provided on the gear disc 23, the child seat 1 further includes a driving disc 28 and a fixing seat 18 connected to a frame (not shown), the fixing seat 18 and the frame are relatively fixed, the driving disc 28 and the gear disc 23 are stacked, a second abutment protrusion 283 is provided on a side of the driving disc 28 close to the gear disc 23, the driving disc 28 is mounted on the fixing seat 18, and the driving disc 28 is detachably mounted on the connection housing 16 to switch between the first state and the second state.

Specifically, in the first state, the transmission disk 28 is mounted on the connection housing 16, and the second abutment boss 283 passes through the escape hole 233, and the connection housing 16 is fixed with respect to the fixed seat 18. In the second state, the first abutment protrusion 1313 is configured to abut against the second abutment protrusion 283 to separate the driving disc 28 from the connection housing 16 when the first socket body 1311 rotates to a predetermined position along with the back plate 12, and the connection housing 16 and the driving disc 28 can both rotate relative to the fixed base 18 along with the first socket 131.

In the present embodiment, the transmission disc 28 and the shift disc 23 are stacked in the axial direction of the connecting shaft 14, the shift disc 23 is disposed near the first seat body 1311, and the transmission disc 28 is disposed near the fixed seat 18.

In the first state, the driving disk 28 is mounted on the connection housing 16, the driving disk 28 is provided with a gear structure similar to the gear disk 232 structure, and the driving disk 28 and the gear disk 23 can be simultaneously embedded into the tooth slot 162 of the connection housing 16. It will be appreciated that after the drive disk 28 has been inserted into the slot 162, the coupling housing 16 is locked to the mounting 18 in this case, i.e. the coupling housing 16 cannot rotate relative to the frame, since the drive disk 28 is coupled to the mounting 18.

Note that the escape hole 233 may provide an escape space for the second abutment protrusion 283 and the first abutment protrusion 1313, avoiding the gear plate 23 from separating the second abutment protrusion 283 from the first abutment protrusion 1313.

In the second state, the back plate 12 rotates, the first seat body 1311 may rotate along with the back plate 12, and when the first seat body 1311 rotates by a preset angle, the position of the first abutment protrusion 1313 corresponds to the position of the second abutment protrusion 283, and at this time, the first abutment protrusion 1313 may abut against the second abutment protrusion 283, so that the driving disc 28 may be ejected out of the tooth slot 162.

It will be appreciated that when the drive disk 28 is ejected out of the splines 162, the coupling housing 16 is no longer constrained by the mating structure between the drive disk 28 and the splines 162, and at this point, the coupling housing 16 may rotate with the first seat body 1311 and the shift disk 23. Therefore, in the second state, the whole of the back plate 12 and the seat plate 11 can rotate relative to the fixing seat 18, and finally the back plate 12 and the seat plate 11 can be overlapped with the frame, so that the carrying and the transferring are convenient.

Referring to fig. 2, in this embodiment, the child seat 1 further includes a third spring 29, the third spring 29 is disposed between the driving disc 28 and the fixing base 18, and two ends of the third spring 29 are respectively abutted against the driving disc 28 and the fixing base 18.

In the second state, the first abutment projection 1313 abuts against the second abutment projection 283, the driving disk 28 is ejected out of the slot 162, the driving disk 28 moves toward the fixing base 18, and the third spring 29 between the driving disk 28 and the fixing base 18 is compressed.

Then, the first seat body 1311 continues to rotate, and after a certain angle of rotation, the first abutment protrusion 1313 is separated from the second abutment protrusion 283, and the driving disc 28 is pushed into the tooth slot 162 again under the restoring force of the third spring 29, so as to lock the connection housing 16 on the fixing seat 18 again.

Alternatively, the number of the third springs 29 may be one, two, three, or the like.

Alternatively, in the case that the number of the third springs 29 is three, the three third springs 29 are disposed at intervals along the circumference of the driving disc 28, and the three third springs 29 may simultaneously drive the driving disc 28 to return to the initial position. The driving disk 28 moves under the combined action of the three third springs 29, and the deflection is not easy to occur. In this way, the drive disk 28 can be more accurately installed into the tooth slot 162.

Referring to fig. 17, in the present embodiment, the transmission disc 28 is provided with an annular transmission groove 282, and the second abutment protrusion 283 is convexly disposed in the transmission groove 282, it should be noted that, in the first state, the first abutment protrusion 1313 is slidably engaged with the transmission groove 282.

During the sliding of the first abutment boss 1313 in the driving groove 282, the first seat body 1311 rotates along with the back plate 12, the back plate 12 and the seat plate 11 relatively approach to each other, after the back plate 12 and the seat plate 11 are folded, the first abutment boss 1313 moves to a position corresponding to the second abutment boss 283, the first abutment boss 1313 abuts against the second abutment boss 283, and the first state is switched to the second state.

Specifically, in the present embodiment, the driving disk 28 is further provided with a transition inclined wall 284, and the transition inclined wall 284 extends from the bottom wall of the driving slot 282 to the top wall of the second abutment boss 283, and the transition inclined wall 284 can guide the first abutment boss 1313 to move from the driving slot 282 to the top wall of the second abutment boss 283 so as to abut against the second abutment boss 283.

That is, the first abutment projection 1313 can move more smoothly from the bottom wall of the driving groove 282 to the top wall of the second abutment projection 283 under the guiding action of the transition inclined wall 284, and the first abutment projection 1313 and the second abutment projection 283 are not easily jammed.

Alternatively, the surface of the transition sloped wall 284 may be planar or curved.

Referring to fig. 2, 11 and 16, the child seat 1 further includes a traction wire 25 and a connector 26, one end of the traction wire 25 is connected with the connector 26, the second limiting member 22 is provided with a clamping groove 223, and the connector 26 is embedded in the clamping groove 223.

Thus, the user pulls the traction wire 25, the connector 26 moves along with the traction wire 25, and the connector 26 drives the second limiting piece 22 to move, so that the second limiting piece 22 can be separated from the limiting hole 231, and thus, the first connecting seat 131 and the back plate 12 can be unlocked from the connecting shell 16, and the first connecting seat 131 and the back plate 12 can rotate relative to the rack. That is, when the inclination angle of the back plate 12 needs to be adjusted, the traction wire 25 may be pulled so that the first socket 131 and the back plate 12 are unlocked from the connection housing 16.

In actual installation, the second spring 24 is sleeved on the traction wire 25, and the connector 26 is embedded in the clamping groove 223.

In connection with fig. 2, in this embodiment, the child seat 1 further comprises an adjustment handle 27, the adjustment handle 27 being in driving connection with the traction wire 25, the adjustment handle 27 being operated to switch different gear positions such that the back plate 12 is at different inclination angles.

To sum up, the working principle of the child seat 1 provided in this embodiment is as follows:

Taking this child seat 1 as an example, in the case of the first gear, the second gear, or the third gear, the adjustment handle 27 is operated, the pull wire 25 pulls the second stopper 22 out of the stopper hole 231 through the connector 26, the inclination angle of the first connecting seat 131 and the back plate 12 can be adjusted, in this process, the transmission shaft 133 moves in the first hole section 1341, no force is applied to the transmission shaft 133 by the inner wall of the first hole section 1341, and the second connecting seat 132 is locked by the first stopper 17, and the second connecting seat 132 and the seat plate 11 do not follow rotation. Under different gear, the inclination of backplate 12 is different, and the user can according to actual demand adjust different gear.

In the fourth gear, the adjusting handle 27 is operated, the traction wire 25 pulls the second limiting piece 22 to be separated from the limiting hole 231 through the connector 26, the first connecting seat 131 and the back plate 12 rotate relative to the frame, the transmission shaft 133 moves into the second hole section 1342, meanwhile, the inclined guide wall 1361 ejects the first limiting piece 17 out of the second notch 137, the second connecting seat 132 is unlocked, the inner wall of the second hole section 1342 applies force to the transmission shaft 133, the transmission shaft 133 drives the second connecting seat 132 and the seat plate 11 to rotate, the seat plate 11 rotates towards the direction close to the back plate 12, the back plate 12 and the seat plate 11 can be folded rapidly, and folding efficiency is improved.

Under the condition of the first gear, the second gear, the third gear or the fourth gear, the first abutting protrusion 1313 slides in the transmission groove 282, after the seat board 11 and the back board 12 are folded, the first abutting protrusion 1313 just moves to a position corresponding to the second abutting protrusion 283, the first abutting protrusion 1313 abuts against the second abutting protrusion 283, so that the transmission disc 28 ejects the connecting shell 16, and then a user can control the seat board 11 and the back board 12 to rotate relative to the fixing seat 18 at the same time, and finally the back board 12 and the seat board 11 are overlapped with the rack, so that subsequent carrying and transferring are facilitated.

The above description is only of specific embodiments of the invention and is not intended to limit the invention, but various modifications and variations can be made by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (11)

1. A child seat is characterized by comprising a seat plate (11), a back plate (12) and a transmission piece (13), wherein the back plate (12) is rotatably connected to the seat plate (11), the transmission piece (13) is simultaneously connected with the seat plate (11) and the back plate (12), the transmission piece (13) is used for driving the seat plate (11) to rotate towards a direction close to the back plate (12) under the rotation action of the back plate (12), the transmission piece (13) comprises a first connecting seat (131), a second connecting seat (132) and a transmission shaft (133), the first connecting seat (131) is connected with the back plate (12), the second connecting seat (132) is connected with the seat plate (11), one end of the transmission shaft (133) is in movable fit with the first connecting seat (131), the other end of the transmission shaft (133) is in movable fit with the second connecting seat (132), the first connecting seat (131) comprises a first seat body (1311) and a first reinforcing plate (1312), the second connecting seat (1321) comprises a second reinforcing seat body (1321) and a second reinforcing seat (1321), the child seat (1) further comprises a frame, a connecting shell (16) and a first limiting piece (17), the second connecting seat (132) is provided with a second notch (137), the connecting shell (16) is connected to the frame, the first limiting piece (17) is movably connected to the connecting shell (16), and the first limiting piece (17) is used for being clamped into or separated from the second notch (137) so as to lock the second connecting seat (132) on the connecting shell (16) or unlock the connecting shell (132) from the connecting shell (16).

2. Child seat according to claim 1, wherein the first connection seat (131) is provided with a first bar-shaped hole (134), the second connection seat (132) is provided with a second bar-shaped hole (135), one end of the transmission shaft (133) is movably embedded in the first bar-shaped hole (134), and the other end of the transmission shaft (133) is movably embedded in the second bar-shaped hole (135).

3. Child seat according to claim 2, wherein the first bar-shaped hole (134) comprises a first hole section (1341) and a second hole section (1342) which are mutually communicated, the drive shaft (133) is adapted to be switchably engaged with the first hole section (1341) or the second hole section (1342) under the rotation action of the back plate (12), and the seat plate (11) is adapted to be driven by the drive shaft (133) and rotated in a direction approaching the back plate (12) in case that the drive shaft (133) is engaged with the second hole section (1342).

4. A child seat according to claim 3, wherein the first aperture section (1341) and the second aperture section (1342) are arc sections, the first connecting seat (131) rotates around a rotation axis, the rotation axis passes through a center of a circle corresponding to the first aperture section (1341), and the radius of curvature of the second aperture section (1342) is larger than the radius of curvature of the first aperture section (1341).

5. Child seat according to claim 1, wherein the first connection seat (131) is provided with a first notch (136), the first notch (136) is provided with a guiding inclined wall (1361), and the guiding inclined wall (1361) is used for pushing the first limiting piece (17) under the action of rotation of the first connection seat (131) so as to push the first limiting piece (17) out of the second notch (137).

6. Child seat according to claim 5, wherein the child seat (1) further comprises a first spring (21), the connection housing (16) is provided with a first fitting cavity (161) fitted with the first limiting member (17), the first spring (21) is accommodated in the first fitting cavity (161), one end of the first spring (21) is abutted with a bottom wall of the first fitting cavity (161), the other end of the first spring (21) is abutted with the first limiting member (17), and the first spring (21) is used for abutting the first limiting member (17) into the second notch (137).

7. Child seat according to claim 1, characterized in that the child seat (1) further comprises a second stop (22) and a gear disc (23), the second stop (22) being movably mounted on the first connection seat (131), the gear disc (23) being mounted on a side of the connection housing (16) close to the first connection seat (131), a plurality of stop holes (231) being provided in a peripheral wall of the gear disc (23), the second stop (22) being adapted to cooperate with one of the stop holes (231) or the second stop (22) being adapted to slidably abut on a peripheral wall between two adjacent stop holes (231).

8. Child seat according to claim 7, wherein the first connection seat (131) is provided with a first abutment protrusion (1313), the gear disc (23) is provided with a relief hole (233), the child seat (1) further comprises a driving disc (28) and a fixing seat (18) for connection to the frame, the driving disc (28) is arranged in a stacked manner with the gear disc (23), a side of the driving disc (28) close to the gear disc (23) is provided with a second abutment protrusion (283), the driving disc (28) is mounted on the fixing seat (18), and the driving disc (28) is detachably mounted on the connection housing (16) for switching between a first state and a second state;

In the first state, the transmission disc (28) is mounted on the connection housing (16), the second abutting protrusion (283) passes through the avoidance hole (233), and the connection housing (16) is fixed relative to the fixing base (18);

In the second state, the first abutting protrusion (1313) is used for abutting the second abutting protrusion (283) to separate the driving disc (28) from the connecting shell (16) when the first connecting seat (131) rotates to a preset position along with the back plate (12), and the connecting shell (16) and the driving disc (28) both rotate relative to the fixed seat (18) along with the first connecting seat (131).

9. Child seat according to claim 8, wherein the child seat (1) further comprises a third spring (29), the third spring (29) being arranged between the driving disc (28) and the fixed seat (18), both ends of the third spring (29) being respectively abutted against the driving disc (28) and the fixed seat (18), the third spring (29) being adapted to be compressed in the second state, and the third spring (29) being adapted to bring the driving disc (28) back to an initial position in case the first abutment protrusion (1313) and the second abutment protrusion (283) are separated.

10. Child seat according to claim 8, wherein the transmission disc (28) is provided with an annular transmission groove (282), the second abutment projection (283) being convexly arranged inside the transmission groove (282);

Wherein, in the first state, the first abutment protrusion (1313) is in sliding engagement with the drive slot (282).

11. Child seat according to claim 10, wherein the drive disc (28) is further provided with a transition inclined wall (284), the transition inclined wall (284) extending from the bottom wall of the drive slot (282) to the top wall of the second abutment projection (283), the transition inclined wall (284) being adapted to guide the movement of the first abutment projection (1313) from the drive slot (282) to the top wall of the second abutment projection (283) for holding the second abutment projection (283).