CN215971213U - Child safety seat - Google Patents

Abstract

The utility model relates to a child safety seat, which comprises a base and a seat, wherein the base is provided with a pivotable supporting leg, a backrest of the seat is provided with a headrest with adjustable height, the child safety seat also comprises a headrest limiting device, and the headrest limiting device is operatively connected with the supporting leg; the headrest limiting device is provided with a first locking piece, and when the supporting legs are in the unfolding state, the first locking piece is in an extending state to be capable of being engaged with the headrest so as to limit the upper adjusting height of the headrest; when the supporting legs are in a folding state, the first locking piece is in a retraction state; and/or the headrest limiting device is provided with a second locking piece, and when the supporting legs are in the unfolding state, the second locking piece is in the retracting state; when the support legs are in the folded state, the second locking piece is in the extending state to be capable of being engaged with the headrest, so that the lower adjustment height of the headrest is limited.

Description

Child safety seat

Technical Field

The present invention relates to a child safety seat.

Background

Child safety seats are used in vehicles to facilitate parents in traveling with children. Existing child safety seats are usually provided with a headrest for supporting and protecting the head of a child, the height of the headrest being adjustable in order to adapt the headrest to children of different heights. The height adjustment range of the headrest is usually large to meet the requirements of children growing to different heights. If the parent is not very skilled in the use of the child safety seat, the height of the headrest used is easily adjusted to an inappropriate height, so that the headrest cannot effectively protect the head of the child. For example, for small children passengers the headrest is not adapted to be adjusted above a certain height, whereas for larger children passengers the headrest is not adapted to be adjusted below a certain height.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a child safety seat, which aims to improve the operation difficulty of adjusting the height of a headrest of the child safety seat.

The child safety seat comprises a base and a seat, wherein the base is provided with a pivotable supporting leg, a backrest of the seat is provided with a headrest with adjustable height, and the child safety seat further comprises a headrest limiting device which is operatively connected with the supporting leg; the headrest limiting device is provided with a first locking piece, and when the supporting legs are in the unfolding state, the first locking piece is in an extending state to be capable of being engaged with the headrest so as to limit the upper adjusting height of the headrest; when the supporting legs are in a folding state, the first locking piece is in a retraction state; and/or the headrest limiting device is provided with a second locking piece, and when the supporting legs are in the unfolding state, the second locking piece is in the retracting state; when the support legs are in the folded state, the second locking piece is in the extending state to be capable of being engaged with the headrest, so that the lower adjustment height of the headrest is limited.

Furthermore, the headrest is arranged on the inner side of the backrest, a blocking block is arranged on the outer side of the backrest, and the blocking block is connected with the headrest and can move up and down along with the headrest; the stop block has an upper stop surface engageable with the first locking member; and/or the blocking piece is provided with a lower limiting surface which can be engaged with the second locking piece.

Further, the outer side of the backrest is provided with a track in sliding fit with the stop block.

Further, the headrest stop device still includes: a first locking assembly, comprising: the first elastic reset piece is arranged on the backrest and connected with the first locking piece; a first cable, a first end of which is connected with the first connecting point of the supporting leg, and a second end of which is operatively connected with the first elastic reset piece; when the supporting legs are in the unfolding state, the first elastic resetting piece keeps the first locking piece in the stretching state; when the supporting legs are in a folding state, the first elastic resetting piece is deformed under the action of the force from the first inhaul cable, so that the first locking piece is switched to a retracting state from an extending state; and/or, a second locking assembly comprising: the second elastic resetting piece is arranged on the backrest and is connected with the second locking piece; a second cable having a first end connected to the second connection point of the support leg and a second end operatively connected to the second elastic return member; when the supporting legs are in a folding state, the second elastic resetting piece keeps the second locking piece in an extending state; when the supporting leg is in the unfolding state, the second elastic resetting piece is deformed by the force from the second inhaul cable, so that the second locking piece is switched to the retraction state from the extension state.

Further, the first elastic resetting piece and the first locking piece are integrally formed, and/or the second elastic resetting piece and the second locking piece are integrally formed.

Further, the supporting legs are pivotally connected with the base through pivot points; the first connecting point is arranged at the top of the supporting leg, the first connecting point and the pivot point are separated by a first preset distance in the length direction of the supporting leg, and/or the second connecting point is arranged at the top of the supporting leg, and the second connecting point and the pivot point are separated by a second preset distance in the length direction of the supporting leg.

Furthermore, a first guide part is arranged at the front end of the base, and the first inhaul cable is connected with the front end of the base through the first guide part; a first cable length between the first guide portion and the first connection point is shorter when the support leg is in the unfolded state than when the support leg is in the folded state; and/or a second guide part is arranged at the front end of the base, and the second inhaul cable is jointed with the front end of the base through the second guide part; a second cable length between the second guide and the second connection point is shorter when the support leg is in the stowed state than when the support leg is in the deployed state.

Further, the seat is pivotally connected to the base through a hollow rotating shaft, and the first cable penetrates through the rotating shaft, and/or the second cable penetrates through the rotating shaft.

Further, the seat is fixedly connected with the base, a first guide structure and/or a second guide structure are/is arranged at the bottom of the base, the first pull cable passes through the first guide structure, and the second pull cable passes through the second guide structure.

Further, the first locking component also comprises a first mounting seat which is mounted on the backrest and is provided with a first accommodating groove; the first elastic resetting piece is positioned in the first accommodating groove, and a first through hole for the first locking piece to extend out or retract is formed in the groove bottom of the first accommodating groove; and/or the second locking assembly further comprises a second mounting seat which is mounted on the backrest and is provided with a second receiving groove; the second elastic resetting piece is located in the second accommodating groove, and a second through hole for the second locking piece to extend out or retract is formed in the groove bottom of the second accommodating groove.

Furthermore, a second end of the first inhaul cable is connected with a first driving pin, and the first driving pin is accommodated in the first accommodating groove and abuts against the first elastic resetting piece; and/or a second end of the second inhaul cable is connected with a second driving pin, and the second driving pin is accommodated in the second accommodating groove and abuts against the second elastic reset piece.

Furthermore, a first slideway is arranged on the groove wall of the first accommodating groove, and the first driving pin is in sliding fit with the first slideway; and/or the groove wall of the second accommodating groove is provided with a second slideway, and the second driving pin is in sliding fit with the second slideway.

Furthermore, the first elastic reset piece is provided with a first open hole, the second end of the first inhaul cable is provided with a first connecting ring, and the first connecting ring is located in the first open hole and sleeved on the first driving pin; and/or the second elastic resetting piece is provided with a second open hole, the second end of the second inhaul cable is provided with a second connecting ring, and the second connecting ring is located in the second open hole and sleeved on the second driving pin.

Further, a first end of the first elastic resetting piece is connected with the first mounting seat, a second end of the first elastic resetting piece extends towards the groove bottom of the first mounting groove in an inclined mode, and the first locking piece is located at the second end of the first elastic resetting piece; and/or the first end of the second elastic resetting piece is connected with the second mounting seat, the second end of the second elastic resetting piece extends towards the groove bottom of the second mounting groove in an inclined mode, and the second locking piece is located at the second end of the second elastic resetting piece.

Further, a height adjusting mechanism is arranged between the backrest and the headrest, and the height adjusting mechanism allows the head to lean against the backrest to have an upper limit adjusting height and a lower limit adjusting height; wherein the height value of the upper limit adjustment height is greater than the height value of the upper adjustment height, and/or the height value of the lower limit adjustment height is less than the height value of the lower adjustment height.

Further, the headrest is provided with a shoulder belt hole and a safety belt channel passing device; wherein the lower limit adjustment height and the upper adjustment height correspond to a distance between a lower edge of the shoulder strap aperture and an upper surface of a seat of the seat, and/or the upper limit adjustment height and the lower adjustment height correspond to a distance between a lower edge of the belt runner and an upper surface of a seat of the seat.

In the child safety seat provided by the utility model, the headrest limiting device can provide an upper height adjustment and/or a lower height adjustment for the headrest through the first locking piece and/or the second locking piece according to different working modes (unfolding or folding) of the supporting legs, so that a parent can be prevented from adjusting the headrest too high when a child sits on the child safety seat, or the parent can adjust the headrest too low when a child sits on the child safety seat, the misuse of the headrest height is effectively avoided, and the safety and the comfort of the child during sitting are improved.

Drawings

FIG. 1 schematically illustrates a perspective view of a child safety seat according to an embodiment of the utility model, with the seat mounted forward on a base and support legs in an extended state;

FIG. 2 schematically illustrates a perspective view of a child safety seat according to an embodiment of the utility model, wherein the seat is mounted inverted on a base with support legs in an extended state;

FIG. 3 schematically illustrates a perspective view of a seat, support legs and headrest restraint of a child safety seat according to an embodiment of the present invention, wherein the seat is in a forward mounted position and the support legs are in a deployed state;

FIG. 4 schematically illustrates a perspective view of a support leg of a child safety seat in accordance with an embodiment of the present invention;

FIG. 5 schematically illustrates a perspective view of a seat, support legs, and a headrest restraint of a child safety seat according to an embodiment of the present invention, wherein the seat is in a forward mounted position and the support legs are in a stowed condition;

FIG. 6 schematically illustrates a rear perspective view of a seat in a child safety seat according to an embodiment of the present invention;

FIG. 7 schematically illustrates a partial longitudinal cross-sectional view of a child safety seat at a first latch assembly according to an embodiment of the disclosure;

FIG. 8 schematically shows an enlarged view at A in FIG. 7;

FIG. 9 schematically illustrates a first perspective view of a first lock assembly in a child safety seat according to an embodiment of the present invention;

FIG. 10 schematically illustrates a second perspective view of a first lock assembly in a child safety seat according to an embodiment of the present invention;

FIG. 11 illustrates an exploded view of a first latch assembly of the child safety seat in accordance with an embodiment of the present invention;

FIG. 12 schematically illustrates a partial longitudinal cross-sectional view of a child safety seat at a second latch assembly according to an embodiment of the present disclosure;

fig. 13 schematically shows an enlarged view at B in fig. 12;

FIG. 14 schematically illustrates a perspective view of a second latch assembly in a child safety seat according to an embodiment of the present invention;

FIG. 15 schematically illustrates an exploded view of a second latch assembly in a child safety seat according to an embodiment of the present invention;

FIG. 16 schematically illustrates the path of a first cable and a second cable when the support legs of the child safety seat are in a deployed state and the seat is in a forward mounted state, in accordance with an embodiment of the present invention;

figure 17 schematically illustrates an adjusted position of a headrest in a child safety seat according to an embodiment of the utility model.

Detailed Description

Referring to fig. 1, 2 and 6, a structure of a child safety seat 100 according to an embodiment of the present invention is shown. The child safety seat 100 comprises a base 1 and a seat 2. In the present embodiment, the seat 2 is rotatably provided on the base 1, and at this time, the seat 2 may have a forward mounting position and a reverse mounting position with respect to the base 1. Fig. 1 shows a perspective view of a seat 2 being mounted on a base 1 in a forward direction, it being understood that a child sitting on the seat 2 mounted in the forward direction faces forward. Fig. 2 shows a perspective view of the seat 2 mounted on the base 1 in the reverse direction, it being understood that the face of a child sitting on the seat 2 mounted in the reverse direction faces rearward. In other embodiments, the seat 2 may be fixedly disposed on the base 1 and may not be rotatable relative to the base 1.

It should be noted that, unless otherwise specified, the directional terms such as "front", "rear", "left", "right", "up", "down", etc. in the present embodiment correspond to the directions of "front", "rear", "left", "right", "up", "down", etc. of the vehicle, and these directional terms are only used to make the description of the embodiments of the present invention clearer, and are not used to unduly limit the scope of the present invention.

The front end of the base 1 is provided with a pivotable support leg 11, see fig. 3 and 4, which support leg 11 is pivotally connected to the base 1 by a pivot point 11 a. The support legs 11 have an extended state (fig. 1) and a collapsed state (fig. 5) with respect to the base 1. The chair 2 has a seat 21 and a backrest 22, the backrest 22 being provided with a headrest 23 which is adjustable in height, so that the headrest 23 can be adjusted to the height of the child. For example, a height adjustment mechanism 4 may be provided between the backrest 22 and the headrest 23, the height adjustment mechanism 4 may be of a known technique, and the height adjustment mechanism 4 allows the height of the headrest 23 above the backrest 22 (see fig. 17, the distance of the headrest 23 relative to the upper surface of the seat 21) to be adjusted to adapt the headrest 23 to changes in the height of a child. As is known in the art, the height adjustment mechanism 4 enables the headrest 23 to have an upper limit adjustment height H3 and a lower limit adjustment height H4, and enables the headrest 23 to be secured in any one of a plurality of adjustment positions between the upper limit adjustment height H3 and the lower limit adjustment height H4. That is, the height adjustment mechanism 4 provides the headrest 23 with a height adjustment range between H4-H3.

Referring to fig. 1, 5 and 17, it should be noted that, for a child safety seat 100 capable of accommodating the heights of small children (children, for example, 0 to 4 years) and large children (for example, 3 to 12 years), a headrest 23 in the related art is provided with a seat belt passing device 237 and a shoulder belt hole 236, and the seat belt passing device 237 is located above the shoulder belt hole 236. When a small child is seated in the child safety seat 100 (e.g., when the support legs 11 need to be opened), the harness of the child safety seat 100 is inserted through the shoulder strap holes 236, and the child safety seat 100 fixes the child therein by means of the harness configured by the child safety seat 100. When a large child is seated in the child safety seat 100, the belt of the vehicle seat will pass the belt shunt 237 when engaged with the child safety seat 100. By means of the shoulder strap aperture 236 or the belt runner 237 the safety belt of the vehicle seat will provide a reliable protection for the child seated in the child safety seat 100 without affecting the seating comfort of the child.

It should be noted that, in the art, when the headrest 23 is used for a small child to sit on, the height of the headrest 23 generally refers to the distance between the lower edge of the shoulder strap aperture 236 and the upper surface of the seat 21, and it is understood that the lower limit adjustment height H4 refers to the nearest distance between the lower edge of the shoulder strap aperture 236 and the upper surface of the seat 21, for example; when the headrest 23 is intended for a larger child to sit on, the height of the headrest 23 generally refers to the distance of the lower edge of the belt runner 237 from the upper surface of the seat 21, it being understood that the upper limit adjustment height H3 refers to, for example, the furthest distance of the lower edge of the belt runner 237 from the upper surface of the seat 21.

The child safety seat 100 further includes a headrest limiting device 3, the headrest limiting device 3 is operatively connected to the support legs 11, and the headrest limiting device 3 has different operating states according to changes of operating modes (unfolding or folding) of the support legs 11.

In this embodiment, referring to fig. 7, 8 and 17, the headrest restraint device 3 may have a first locking member 301. When the support legs 11 are in the unfolded state, the first latches 301 are in an extended state to be able to engage with the headrest 23, thereby defining an upper adjustment height H1 of the headrest 23 (in conjunction with the above, the upper adjustment height H1 refers to, for example, the distance of the lower edge of the shoulder strap aperture 236 from the upper surface of the seat 21). When the support legs 11 are in the collapsed state, the first latch 301 is in the retracted state. Referring to fig. 12, 13 and 17, the headrest restraint 3 may have a second latch 302, the second latch 302 being in a retracted state when the support legs 11 are in an extended state. When the support legs 11 are in the stowed condition, the second latch 302 is in an extended condition to be able to engage with the headrest 23, thereby defining a lower adjustment height H2 of the headrest 23 (in combination with the above, the lower adjustment height H2 refers to, for example, the distance of the lower edge of the harness runner 237 from the upper surface of the seat 21). It is understood that the upper limit adjustment height H3 has a height value greater than the upper adjustment height H1, and the upper adjustment height H1 has a height value greater than the lower limit adjustment height H4; the height value of the lower limit adjusting height H4 is smaller than that of the lower adjusting height H2, and the height value of the lower adjusting height H2 is smaller than that of the upper limit adjusting height H3.

Generally, the child safety seat 100 is more suitable for use by smaller children (infants) when supported using the support legs 11 (i.e., the support legs 11 are in the unfolded state in the use state of the child safety seat 100), where the headrest 23 needs to be adjusted to a lower range of positions. When the child safety seat 100 is not supported by the support legs 11 (i.e., the support legs 11 are in the folded state in the use state of the child safety seat 100), it is more suitable for a larger child to use, and at this time, the headrest needs to be adjusted to a higher position range.

In order to avoid the misuse of the headrest 23 in different modes of the supporting legs 11 of the child safety seat 100, the headrest limiting device 3 is operatively connected with the supporting legs 11, so that when the supporting legs 11 are in the unfolded state for seating a child, the first locking piece 301 of the headrest limiting device 3 is in the extended state and the second locking piece 302 is in the retracted state, so that the upper adjustment height H1 of the headrest 23 when the supporting legs 11 are in the unfolded state is limited, and the height adjustment range of the headrest 23 at the moment is, for example, between H4 and H1 (for example, 274mm to 391mm), so that when the child safety seat is seated by the child, the headrest is prevented from being misused due to the fact that a parent adjusts the headrest 23 too high, and the seating safety and comfort of the child are improved. When the supporting legs 11 are in the folded state for a larger child to sit on, the second locking piece 302 of the headrest limiting device 3 is in the extended state and the first locking piece 301 is in the retracted state, so that the height H2 of the headrest 23 is limited to be adjusted when the supporting legs 11 are in the folded state, and the height adjustment range of the headrest 23 is, for example, between H2-H3 (for example, 324 mm-533 mm), so that when the child safety seat is used for a larger child, the condition that the headrest 23 is adjusted by parents to be too low to cause misuse of the headrest is avoided, and the safety and the comfort of the larger child to sit are improved.

In the above embodiment, the height difference HS between the upper adjustment height H1 and the lower adjustment height H2 is not equal to the height difference between the lower edge of the webbing relay 237 and the lower edge of the shoulder strap hole 236, and even the height value of the upper adjustment height H1 is greater than the height value of the lower adjustment height H2, that is, the position adjustment range of the headrest 23 may have an overlapping adjustment range when the support legs 11 are in the unfolded state and when the support legs 11 are in the collapsed state. In other embodiments (fig. 17), the height difference HS between the upper adjustment height H1 and the lower adjustment height H2 may be equal to the height difference between the lower edge of the harness runner 237 and the lower edge of the shoulder strap aperture 236, for example.

Referring to fig. 1 and 6, the headrest 23 is disposed on the inner side 221 of the backrest 22, and the stop block 24 is disposed on the outer side 222 of the backrest 22, and the stop block 24 is connected to the headrest 23 and can move up and down along with the headrest 23. The stop block 24 may be detachably connected to the headrest 23 by bolts (not numbered), for example, and the outer side 222 of the backrest 22 may be provided with a rail 2221, for example, and the stop block 24 is slidably fitted with the rail 2221. The blocking tab 24 may have an upper stop surface 241 engageable with the first latch 301 and the blocking tab 24 may also have a lower stop surface 242 engageable with the second latch 302. In this way, the first and second latches 301 and 302 can indirectly engage with the headrest 23 through the blocking pieces 24, thereby limiting the upper and lower adjustment heights H1 and H2 of the headrest 23. The blocking block 24 linked with the headrest 23 is arranged on the outer side 222 of the backrest 22, so that the extending directions of the first locking piece 301 and the second locking piece 302 are both towards the direction departing from the back of a child passenger, the outer space of the backrest 22 is fully utilized on one hand, and the structure of the headrest 23 is not greatly influenced on the other hand.

Referring to fig. 3, the headrest restraint device 3 may further include a first locking assembly 31 and a second locking assembly 32, fig. 7 to 11 show a preferred embodiment of the first locking assembly 31, and fig. 12 to 15 show a preferred embodiment of the second locking assembly 32.

Referring to fig. 3 and 4, fig. 7 to 11, and fig. 16 in combination, the first locking assembly 31 may include a first elastic restoring member 311 and a first cable 312. The first elastic restoring member 311 may be installed at the backrest 22 and connected with the first locking member 301. The first elastic return member 311 may be, for example, an elastic sheet material, such as made of metal or plastic or other suitable material. The first latch 301 may be a latch pin, which may be attached to or integrally formed with the first resilient return 311. The first cable 312 may be, for example, a steel wire, and the first end 3121 of the first cable 312 is connected to the first connection point 111 of the supporting leg, and the second end 3122 is operatively connected to the first elastic restoring member 311. It should be noted that the operable connection between the first cable 312 and the first elastic reset element 311 may be a direct connection, an indirect connection, a direct collision, or an indirect collision, so that the active action of one of the first cable 312 and the first elastic reset element 311 may cause the passive action of the other.

The first locking component 31 can satisfy the following conditions by reasonably setting the path of the first cable 312: when the support legs 11 are in the unfolded state (as mentioned above, generally corresponding to the sitting condition of a child, the position of the headrest 23 needs to be controlled not to be too high), the first elastic restoring member 311 keeps the first locking member 301 in the extended state. When the headrest 23 moves from the bottom up to the upper adjustment height H1, the first locking piece 301 abuts against the upper limiting surface 241, thereby limiting the headrest 23 from moving above the upper adjustment height H1. When the supporting legs 11 are switched from the unfolded state to the folded state, the supporting legs 11 pull the first pulling cable 312, the first elastic resetting piece 311 is elastically deformed by the force from the first pulling cable 312, the elastic deformation of the first elastic resetting piece 311 drives the first locking piece 301 to be switched from the extended state to the retracted state, and at this time, the first locking piece 301 no longer limits the headrest 23 to move higher than the upper adjustment height H1. It can be understood that when the supporting legs 11 are switched from the folded state to the unfolded state, the first elastic restoring member 311 can pull the first pulling cable 312 reversely under the elastic restoring force and bring the first locking member 301 back to the extended state.

Referring to fig. 3 and 4 in combination, and fig. 12 to 16, the second locking assembly 32 may include a second elastic restoring member 321 and a second cable 322. The second resilient return member 321 may be mounted to the backrest 22 and coupled to the second latch member 302. The second elastic restoring member 321 may be, for example, an elastic sheet material, for example, made of metal or plastic or other suitable material. The second latch member 302 may be a latch pin that is attached to or integrally formed with the second resilient return member 321. The second cable 322 can be, for example, a steel wire, and the first end 3221 of the second cable 322 is connected to the second connection point 112 of the supporting leg 11, and the second end 3222 is operatively connected to the second elastic restoring member 321. It should be noted that the operable connection between the second cable 322 and the second elastic restoring element 321 may be a direct connection, an indirect connection, a direct collision, or an indirect collision, so that the active action of one of the second cable 322 and the second elastic restoring element 321 will cause the passive action of the other.

This second locking subassembly 32 is through the route of rational setting up second cable 322, can satisfy the following condition: when the support legs 11 are in the retracted position (as mentioned above, generally corresponding to the situation of a larger child sitting, the position of the headrest 23 needs to be controlled not to be too low), the second elastic restoring member 321 keeps the second locking member 302 in the extended position. When the headrest 23 moves from the top down to the lower adjustment height H2, the second locking member 302 abuts against the lower limiting surface 242, thereby limiting the movement of the headrest 23 below the lower adjustment height H2. When the supporting legs 11 are switched from the folded state to the unfolded state, the supporting legs 11 pull the second cable 322, the second elastic resetting piece 321 is elastically deformed by the force from the second cable 322, the second locking piece 302 is switched from the extended state to the retracted state by the elastic deformation of the second elastic resetting piece 321, and at this time, the second locking piece 302 no longer limits the headrest 23 to move lower than the lower adjustment height H2. It can be understood that when the supporting legs 11 are switched from the unfolded state to the folded state, the second elastic restoring member 321 can pull the second cable 322 reversely under the elastic restoring force and bring the second locking member 302 back to the extended state.

Referring to fig. 3 to 5, in the present embodiment, the first connection point 111 may be disposed at the top 110 of the support leg 11, and the first connection point 111 may be spaced apart from the pivot point 11a of the support leg 11 by a first preset distance L1 in the length direction L of the support leg 11. The second connection point 112 may be disposed at the top 110 of the support leg 11, and the second connection point 112 may be spaced apart from the pivot point 11a of the support leg 11 by a second preset distance L2 in the length direction L of the support leg 11. In some embodiments, the first preset distance L1 may be equal to the second preset distance L2. In some embodiments, the first connection point 111 and the second connection point 112 may be the same connection point.

Referring to fig. 3, 5 and 16, in the present embodiment, the first cable 312 and the second cable 322 may be provided as follows, for example:

a first guide 101 is provided at the bottom front end of the chassis 1 (the chassis 1 is not shown in fig. 3 and 5 for ease of understanding), and the first cable 312 is engaged with the front end of the chassis 1 through the first guide 101, the first guide 101 being, for example, at the rear of the first connection point 111. The first cable length between the first guide portion 101 and the first connection point 111 is small when the support leg 11 is in the unfolded state, and is large when the support leg 11 is in the folded state. In fig. 3, S1 represents a first cable length between the first guide portion 101 and the first connection point 111 when the support leg 11 is in the unfolded state, and in fig. 5, S2 represents a first cable length between the first guide portion 101 and the first connection point 111 when the support leg 11 is in the folded state, and S1 is smaller than S2. The second end 3122 of the first cable 312 sequentially passes through the first guide portion 101 and the bottom of the base 1 to extend upward, and is connected to the first elastic resetting piece 311.

The second guide portion 102 is provided at the bottom front end of the base 1, and the second cable 322 is engaged with the front end of the base 1 via the second guide portion 102, and the second guide portion 102 is located, for example, in front of the second connection point 112. The second cable length between the second guide portion 102 and the second connection point 112 is larger when the support leg 11 is in the unfolded state and smaller when the support leg 11 is in the folded state. In fig. 3, S3 represents the second cable length between the second guide portion 102 and the second connection point 112 when the support leg 11 is in the unfolded state, and in fig. 5, S4 represents the second cable length between the second guide portion 102 and the second connection point 112 when the support leg 11 is in the folded state, and S3 is greater than S4. The second end 3222 of the second cable 322 sequentially passes through the second guiding portion 102 and the bottom of the base 1 to extend upward, and is connected to the second elastic restoring member 321.

Referring to fig. 6, in the present embodiment, the seat 2 is pivotally connected to the base 1 through a hollow rotating shaft 20, and the seat 2 can rotate 360 ° for example. At this time, the second end 3122 of the first cable 312 may pass through the central hole of the rotating shaft 10 and be connected to the first elastic restoring element 311, and the second end 3222 of the second cable 322 may pass through the central hole of the rotating shaft 20 and be connected to the second elastic restoring element 321. Thus, the first and second latch assemblies 31 and 32 can operate normally regardless of whether the seat 2 is in the forward installation position or the reverse installation position. Referring to fig. 16, it can be seen that the first cable 312 and the second cable 322 are crossed in the rotating shaft 20 in the present embodiment, but in other embodiments, the first cable 312 and the second cable 322 may take other suitable paths so that the first cable 312 and the second cable 322 do not cross.

Referring to fig. 8 to 11, in the present embodiment, the first locking component 31 may further include a first mounting seat 331, the first mounting seat 331 is mounted on the backrest 22 and has a first receiving groove 3310, and the first elastic restoring member 311 is located in the first receiving groove 3310. The first elastic restoring member 311 is mounted to the backrest 22 through the first mounting seat 331, and is not easily interfered by other components in the first receiving groove 3310. The first through hole 33101 for the first locking member 301 to extend out or retract back is disposed at the bottom of the first accommodation groove 3310. It can be appreciated that when the first latch 301 protrudes from the first through hole 33101, the first latch 301 is in a protruding state for engagement with the headrest 23 or the blocking piece 24. When the first latch 301 is retracted from the first through hole 33101, the first latch 301 is in a retracted state.

Referring to fig. 13 to 15, in the present embodiment, the second locking assembly 32 may further include a second mounting seat 332, the second mounting seat 332 is mounted to the backrest 22 and has a second receiving groove 3320, and the second elastic restoring member 321 is located in the second receiving groove 3320. The second elastic restoring member 321 is mounted to the backrest 22 through the second mounting seat 332 and is not easily interfered by other components in the second receiving groove 3320. The bottom of the second receiving groove 3320 is provided with a second through hole 33201 for extending or retracting the second locking member 302. It will be appreciated that when the second latch member 302 extends from the second through aperture 33201, the second latch member 302 is in an extended condition for engagement with the headrest 23 or the stop 24. When the second latch member 302 is retracted from the second through-hole 33201, the second latch member 302 is in a retracted state.

The preferred operative connection of the first cable 312 to the first elastic return member 311 and the preferred operative connection of the second cable 322 to the second elastic return member 321 are also shown in this embodiment.

Referring to fig. 10 and 11, a first drive pin 341 may be connected to the second end 3122 of the first cable 312, and the first drive pin 341 may be received in the first receiving groove 3310 and abut against the first elastic restoring member 311. When the support legs 11 are switched from the unfolded state to the folded state, the first cable 312 drives the first elastic restoring member 311 to deform through the first driving pin 341 so that the first latch 301 is retracted from the first through hole 33101.

In some embodiments, the groove wall of the first receiving groove 3310 may be provided with a first slide 33102, and the first driving pin 341 is slidably fitted with the first slide 33102. The first slide way 33102 is, for example, an elongated hole, and the first slide way 33102 provides the first drive pin 341 with a stroke equal to, for example, the difference between the aforementioned S1 and S2. Referring to fig. 8, when the supporting leg 11 is switched from the unfolded state to the folded state, the first cable 312 pulls the first driving pin 341 to move along the first slide 33102 to the lower right, and the first driving pin 341 applies force to the first elastic restoring member 311 during the movement, so that the first locking member 301 moves to the upper right and retracts from the first through hole 33101. Thus, when the support legs 11 of the child safety seat are folded for seating of a larger child, the first latch 301 no longer restricts upward movement of the headrest 23.

In some embodiments, the middle portion of the first elastic restoring member 311 may be provided with a first hole 3110, the second end 3122 of the first cable 312 is provided with a first connection ring 31220, and the first connection ring 31220 is located in the first hole 3110 and sleeved on the first driving pin 341.

In some embodiments, the first end 3111 of the first elastic restoring member 311 is riveted or welded with the first mounting seat 331, for example, and the second end 3112 of the first elastic restoring member 311 extends obliquely toward the groove bottom of the first mounting groove 3310, thus having a slope. The first latch 301 is located at the second end 3112 of the first elastic reset piece 311. Thus, when the first driving pin 341 receives a pulling force from the first cable 312 greater than a pressing force from the first elastic restoring member 311, the first driving pin 341 slides in the first slide 33102 while pushing the slope of the first elastic restoring member 311 to be elastically deformed, so that the first locking member 301 is retracted from the first through hole 33101. When the first drive pin 341 receives a pulling force from the first cable 312 less than a pressing force from the first elastic restoring member 311, the first lock member 301 protrudes from the first through hole 33101 while the slope of the first elastic restoring member 311 drives the first drive pin 341 to slide reversely in the first slide 33102.

Referring to fig. 15, a second driving pin 342 may be connected to the second end 3222 of the second cable 322, and the second driving pin 342 is received in the second receiving groove 3320 and abuts against the second elastic restoring member 321. When the support legs are switched from the folded state to the unfolded state, the second cable 322 drives the second elastic reset piece 321 to deform through the second driving pin 342, so that the second locking piece 302 retracts from the second through hole 33201.

In some embodiments, groove walls of the second receiving groove 3320 may be provided with second sliding ways 33202, and the second driving pin 342 is slidably engaged with the second sliding ways 33202. The second slide way 33202 is, for example, an elongated hole, and the second slide way 33202 provides the second drive pin 342 with a stroke, for example, equal to the difference between the aforementioned S3 and S4. Referring to fig. 13, when the support leg 11 is switched from the retracted state to the extended state, the second cable 322 pulls the second driving pin 342 to move along the second sliding track 33202 to the lower right, and the second driving pin 342 applies a force to the second elastic reset piece 321 during the movement, so that the second locking piece 302 moves to the upper right to retract from the second through hole 33201. Thus, when the support legs 11 of the child safety seat are unfolded for seating of a smaller child, the second latches 302 no longer limit the downward movement of the headrest 23.

In some embodiments, the second elastic restoring member 321 may be provided with a second opening 3210 at a middle portion thereof, and the second end 3222 of the second cable 322 is provided with a second connecting ring 32220, wherein the second connecting ring 32220 is located in the second opening 3210 and sleeved on the second driving pin 342.

In some embodiments, the first end 3211 of the second elastic restoring member 321 is riveted or welded with the second mounting seat 332, for example, and the second end 3212 of the second elastic restoring member 321 extends obliquely toward the groove bottom of the second mounting groove 3320, thus having a slope. The second locking member 302 is located at the second end 3212 of the second elastic restoring member 321. Thus, when the second driving pin 342 is subjected to a pulling force from the second cable 322 and a pressure greater than that from the second elastic restoring element 321, the second driving pin 342 slides in the second slideway 33202 and pushes the inclined surface of the second elastic restoring element 321 to deform elastically, so as to retract the second locking element 302 from the second through hole 33201. When the second driving pin 342 is subjected to a pulling force from the second cable 322 and a pressure force from the second elastic restoring member 321 is smaller, the inclined surface of the second elastic restoring member 321 drives the second driving pin 342 to slide reversely in the second sliding track 33202, and simultaneously, the second locking member 302 extends out of the second through hole 33201.

The first and second mounting seats 331 and 332 may be spaced left and right in the middle of the backrest 22.

It should be noted that, although the headrest limiting device 3 includes the first locking member 301 and the second locking member 302 in the embodiment, in practical application, the headrest limiting device 3 may include only one of the first locking member 301 and the second locking member 302, and it is understood that the first locking assembly 31 and the second locking assembly 32 associated with the first locking member 301 and the second locking member 302 may be correspondingly provided with only one.

It is understood that the headrest limiting device 3 and the first and second locking assemblies 31 and 32 thereof may have various embodiments in other embodiments, and are not limited to the above examples, as long as the objects of the present invention can be achieved.

It should be noted that although the first and second lock members 301 and 302 are configured to limit the upward and downward movement of the headrest 23 by abutting engagement with the stop block 24 in the above-described embodiment, it is understood that in other embodiments, the stop block 24 may not be provided, and the first and second lock members 301 and 302 may be directly engaged with the headrest 23 to limit the upward and downward movement of the headrest 23, for example.

It should be noted that, although the child safety seat 100 in which the seat 2 is pivotally connected to the base 1 is taken as an example in the above embodiments, it is understood that, in other embodiments that are not shown, the headrest limiting device 3 of the embodiment of the present invention may also be applied to the child safety seat 100 in which the seat 2 is fixedly connected to the base 1. At this time, a first guiding structure and/or a second guiding structure (not shown) may be provided at the bottom of the base 1, the second end 3122 of the first cable 312 passes through the first guiding structure and is guided by the first guiding structure to be operatively connected with the first elastic restoring member 311 upward, and the second end 3222 of the second cable 322 passes through the second guiding structure and is guided by the second guiding structure to be operatively connected with the second elastic restoring member 321 upward.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (16)

1. A child safety seat comprises a base and a seat, wherein the base is provided with pivotable supporting legs, and a backrest of the seat is provided with a headrest with adjustable height;

the headrest limiting device is provided with a first locking piece, and when the supporting legs are in the unfolding state, the first locking piece is in an extending state to be capable of being engaged with the headrest so as to limit the upper adjusting height of the headrest; when the supporting legs are in a folding state, the first locking piece is in a retraction state;

and/or the headrest limiting device is provided with a second locking piece, and when the supporting legs are in the unfolding state, the second locking piece is in the retracting state; when the support legs are in the folded state, the second locking piece is in the extending state to be capable of being engaged with the headrest, so that the lower adjustment height of the headrest is limited.

2. The child safety seat according to claim 1, wherein the headrest is arranged on the inner side of the backrest, and a blocking block is arranged on the outer side of the backrest, is connected to the headrest and can move up and down along with the headrest;

the stop block has an upper stop surface engageable with the first locking member; and/or the blocking piece is provided with a lower limiting surface which can be engaged with the second locking piece.

3. A child safety seat according to claim 2, wherein the outer side of the backrest is provided with a track which is a sliding fit with the stop.

4. The child safety seat according to any one of claims 1 to 3, wherein the headrest restraint device further comprises:

a first locking assembly, comprising: the first elastic reset piece is arranged on the backrest and connected with the first locking piece; a first cable, a first end of which is connected with the first connecting point of the supporting leg, and a second end of which is operatively connected with the first elastic reset piece; when the supporting legs are in the unfolding state, the first elastic resetting piece keeps the first locking piece in the stretching state; when the supporting legs are in a folding state, the first elastic resetting piece is deformed under the action of the force from the first inhaul cable, so that the first locking piece is switched to a retracting state from an extending state;

and/or the presence of a gas in the gas,

a second locking assembly, comprising: the second elastic resetting piece is arranged on the backrest and is connected with the second locking piece; a second cable having a first end connected to the second connection point of the support leg and a second end operatively connected to the second elastic return member; when the supporting legs are in a folding state, the second elastic resetting piece keeps the second locking piece in an extending state; when the supporting leg is in the unfolding state, the second elastic resetting piece is deformed by the force from the second inhaul cable, so that the second locking piece is switched to the retraction state from the extension state.

5. The child safety seat according to claim 4, wherein the first resilient return member is integrally formed with the first latch member and/or the second resilient return member is integrally formed with the second latch member.

6. The child safety seat according to claim 4,

the supporting legs are pivotally connected with the base through pivot points;

the first connecting point is arranged at the top of the supporting leg, the first connecting point and the pivot point are separated by a first preset distance in the length direction of the supporting leg, and/or the second connecting point is arranged at the top of the supporting leg, and the second connecting point and the pivot point are separated by a second preset distance in the length direction of the supporting leg.

7. The child safety seat according to claim 6,

the front end of the base is provided with a first guide part, and the first inhaul cable is jointed with the front end of the base through the first guide part; a first cable length between the first guide portion and the first connection point is shorter when the support leg is in the unfolded state than when the support leg is in the folded state;

and/or the presence of a gas in the gas,

the front end of the base is provided with a second guide part, and the second inhaul cable is jointed with the front end of the base through the second guide part; a second cable length between the second guide and the second connection point is shorter when the support leg is in the stowed state than when the support leg is in the deployed state.

8. A child safety seat according to claim 4, wherein the seat is pivotally connected to the base by a hollow pivot shaft through which the first cable is passed and/or through which the second cable is passed.

9. A child safety seat according to claim 4, wherein the seat is fixedly connected to the base, and a first guide structure and/or a second guide structure is provided on the bottom of the base, the first cable passing through the first guide structure and the second cable passing through the second guide structure.

10. The child safety seat according to claim 4,

the first locking assembly further comprises a first mounting seat, and the first mounting seat is mounted on the backrest and provided with a first accommodating groove; the first elastic resetting piece is positioned in the first accommodating groove, and a first through hole for the first locking piece to extend out or retract is formed in the groove bottom of the first accommodating groove;

and/or the presence of a gas in the gas,

the second locking assembly further comprises a second mounting seat, and the second mounting seat is mounted on the backrest and provided with a second accommodating groove; the second elastic resetting piece is located in the second accommodating groove, and a second through hole for the second locking piece to extend out or retract is formed in the groove bottom of the second accommodating groove.

11. The child safety seat according to claim 10,

a second end of the first inhaul cable is connected with a first driving pin, and the first driving pin is accommodated in the first accommodating groove and abuts against the first elastic resetting piece;

and/or the presence of a gas in the gas,

and a second end of the second inhaul cable is connected with a second driving pin, and the second driving pin is accommodated in the second accommodating groove and abuts against the second elastic reset piece.

12. The child safety seat according to claim 11,

a first slideway is arranged on the groove wall of the first accommodating groove, and the first driving pin is in sliding fit with the first slideway;

and/or the presence of a gas in the gas,

the cell wall of second holding tank is provided with the second slide, second drive round pin with second slide sliding fit.

13. The child safety seat according to claim 11,

the first elastic reset piece is provided with a first open hole, the second end of the first inhaul cable is provided with a first connecting ring, and the first connecting ring is positioned in the first open hole and sleeved on the first driving pin;

and/or the presence of a gas in the gas,

the second elasticity resets and is provided with the second trompil, the second end of second cable is provided with the second go-between, the second go-between is located in the second trompil and the cover is located the second drive round pin.

14. The child safety seat according to claim 11,

the first end of the first elastic resetting piece is connected with the first mounting seat, the second end of the first elastic resetting piece extends towards the groove bottom of the first mounting groove in an inclined mode, and the first locking piece is located at the second end of the first elastic resetting piece;

and/or the presence of a gas in the gas,

the first end that the second elasticity resets with the second mount pad is connected, the second end that the second elasticity resets extends towards the tank bottom slope of second mounting groove, the second locking piece is located the second end that the second elasticity resets.

15. The child safety seat according to any one of claims 1 to 3,

a height adjusting mechanism is arranged between the backrest and the headrest, and the height adjusting mechanism allows the head to lean against the backrest to have an upper limit adjusting height and a lower limit adjusting height;

wherein the height value of the upper limit adjustment height is greater than the height value of the upper adjustment height, and/or the height value of the lower limit adjustment height is less than the height value of the lower adjustment height.

16. The child safety seat according to claim 15,

the headrest is provided with a shoulder belt hole and a safety belt channel passing device;

wherein the lower limit adjustment height and the upper adjustment height correspond to a distance between a lower edge of the shoulder strap aperture and an upper surface of a seat of the seat, and/or the upper limit adjustment height and the lower adjustment height correspond to a distance between a lower edge of the belt runner and an upper surface of a seat of the seat.

Images