CN210174683U - Headrest height adjusting mechanism and child safety seat - Google Patents

Abstract

The utility model provides a headrest height adjusting mechanism and children's safety seat belongs to children's safety seat field, sets up on the seat including headrest and back plate, draw including the headrest and move and be used for spacing the headrest locating component at height-adjusting with the headrest, headrest locating component includes: a plurality of gear grooves are arranged and vertically distributed on the backrest plate; the sliding block is connected with the headrest pulling assembly to drive the headrest pulling assembly to move upwards, the sliding block is of a hollow structure, and inclined grooves are respectively formed in the opposite side walls of the sliding block; the clamping pin is provided with an inserting end and a connecting end, the inserting end can be inserted into the gear groove to form movable locking, and the connecting end is installed on the inclined groove through cylindrical rods extending from two sides so that the inserting end can exit the gear groove when the sliding block moves upwards. The utility model discloses a headrest draws and moves piece and sliding block lug connection, and the structure is compacter and simple, accords with the development of the lightness of children's seat, is favorable to marketing.

Description

Headrest height adjusting mechanism and child safety seat

Technical Field

The utility model belongs to children's safety seat field, concretely relates to headrest height adjusting mechanism, in addition, the utility model discloses still relate to a children's safety seat including above-mentioned headrest height adjusting mechanism.

Background

With the continuous improvement of safety consciousness of people, at present, people can select to install a child safety seat on an automobile seat so as to reduce the impact force on children and limit the body movement of the children to reduce the injury to the children under the condition that the automobile collides or is suddenly decelerated, and the riding safety of the children is ensured.

In order to match children with different body heights, a headrest height adjusting mechanism is arranged on each child safety seat, for example, a headrest height adjusting mechanism of the child safety seat disclosed in the prior art (CN207565390U), an adjusting component and a stretching component for controlling the movement of the adjusting component are arranged in each seat, each adjusting component comprises a locking groove, an adjusting plate and a headrest adjusting connecting rod, a headrest adjusting pin sliding along the adjusting plate is arranged in each adjusting pin, and the headrest adjusting pin and the locking groove are movably locked; the stretching assembly comprises a headrest adjuster handle, a headrest sliding pin is arranged at the bottom of the headrest adjuster handle and connected with a headrest adjusting connecting rod, and the headrest adjusting pin is driven to change positions by pulling the headrest adjuster handle. However, the headrest adjuster handle in the prior art drives the headrest adjusting pin to move through the transmission part (the headrest sliding pin and the headrest adjusting connecting rod), so that the whole occupied space is large, the structure is complex, and the development of the child safety seat to the light direction is not facilitated.

SUMMERY OF THE UTILITY MODEL

Based on the above background problem, the utility model aims at providing a headrest height adjusting mechanism has solved among the prior art big and the complicated defect of structure of occupation space that headrest regulator handle passes through the driving medium and drives the action of headrest adjusting pin and exist, accords with the portable development direction of children's seat. Another object of the present invention is to provide a child safety seat including the above headrest height adjusting structure.

In order to achieve the above purpose, the utility model provides a technical scheme is:

the utility model provides a headrest height adjusting mechanism sets up on the seat including headrest and back board, draws including the headrest and moves the piece and be used for spacing the headrest locating component at height-adjusting with the headrest, its characterized in that, headrest locating component includes: a plurality of gear grooves are arranged and vertically distributed on the backrest plate; the sliding block is connected with the headrest pulling assembly to drive the headrest pulling assembly to move upwards, the sliding block is of a hollow structure, and inclined grooves are respectively formed in the opposite side walls of the sliding block; the clamping pin is provided with an inserting end and a connecting end, the inserting end can be inserted into the gear groove to form movable locking, and the connecting end is installed on the inclined groove through cylindrical rods extending from two sides so that the inserting end can exit the gear groove when the sliding block moves upwards.

The headrest positioning assembly further comprises a sliding block return spring, the sliding block and the sliding block return spring are both accommodated in an adjusting base, and the adjusting base penetrates through the backrest plate and is connected with the headrest; sliding block reset spring's one end with adjust the roof of base fixed, the other end with the sliding block is fixed.

In one embodiment, the headrest pulling member comprises an adjustment handle, the bottom end of the adjustment handle is fixed with the sliding block, and the top end of the adjustment handle extends upwards out of the seat.

Preferably, the sliding block is provided with a clamping column extending horizontally from the end face adjacent to the adjusting handle, the clamping column is provided with a clamping groove, and the adjusting handle is provided with a connecting hole for the clamping column to pass through and limit through the clamping groove.

Preferably, the sliding block is of a concave structure integrally, the concave opening end of the sliding block is far away from the clamping column, and the chute is arranged on the side wall of the concave structure.

More preferably, the chute has an upper end disposed adjacent to the adjustment knob and a bottom end disposed away from the adjustment knob in a horizontal direction.

In one embodiment, the backrest plate is vertically provided with a moving groove, a plurality of stoppers are uniformly distributed in the moving groove from top to bottom, and a gap between two adjacent stoppers forms the gear groove.

Preferably, the bayonet lock is in a rectangular block structure, and the size of the bayonet lock is matched with the gap between two adjacent blocking pieces.

In order to achieve the above object, the present invention also provides a child safety seat, including: a back board, a headrest vertically moving on the back board, and the height adjusting mechanism of the headrest.

Compared with the prior art, the utility model discloses following effect has:

1. the headrest pulling piece of the utility model is directly connected with the sliding block, the structure is more compact and simple, the development of lightening the child seat is met, and the market promotion is facilitated;

2. the utility model discloses an it has the chute to open on the sliding block, and the bayonet lock is connected through the cylinder pole that the side extends and the chute on the sliding block, through the setting of chute for the sliding block can drive the bayonet lock and insert the gear groove and deviate from the gear groove, simplifies adjustment mechanism's structure, and it is convenient to adjust.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below.

Fig. 1 is an exploded view of a headrest height adjustment mechanism in an embodiment of the present invention;

fig. 2 is a schematic structural view of a backrest plate according to an embodiment of the present invention;

FIG. 3 is a schematic view of the assembly of the adjustment handle and the sliding block in the embodiment of the present invention;

FIG. 4 is a schematic structural diagram of the slider shown in FIG. 3;

FIG. 5 is a schematic structural view of the latch of the embodiment of the present invention;

FIG. 6 is a schematic view of the latch of the embodiment of the present invention inserted into the gear groove;

FIG. 7 is an enlarged view of a portion of FIG. 6 at A;

FIG. 8 is a schematic view of the latch releasing from the notch of the embodiment of the present invention;

fig. 9 is a partial enlarged view of fig. 8 at B.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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 obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The embodiment provides a headrest height adjusting mechanism, as shown in fig. 1, which is arranged on a seat comprising a headrest 1-1 and a backrest plate 1-2, and comprises a headrest pulling part and a headrest positioning component for limiting the headrest 1-1 at an adjusted height.

In this embodiment, as shown in fig. 1 and 2, the headrest pulling member includes an adjustment handle 1, and when the adjustment handle 1 is assembled, a later-described clip column 205 is firstly inserted through a connection hole at the bottom end of the adjustment handle 1, as shown in fig. 2, the adjustment handle 1 is in a horizontal state, and then is rotated by 90 °, and a limit is formed by a later-described clip groove 206, so that the sliding block 202 is driven to move by pulling the adjustment handle 1.

The headrest positioning assembly includes: a gear groove 201, a sliding block 202, a detent 203, and a sliding block return spring 204. In this embodiment, as shown in fig. 2, a moving groove 1-3 is vertically formed in the backrest plate 1-2, a plurality of stoppers are uniformly distributed in the moving groove 1-3 up and down, and a gap between two adjacent stoppers forms the gear groove 201; more specifically, each stopper comprises two stoppers 1-4 which are horizontally and symmetrically arranged, and a gap is arranged between the two stoppers 1-4.

In this embodiment, as shown in fig. 3 and 4, the bottom end of the adjustment handle 1 is fixed to the sliding block 202, the top end of the adjustment handle 1 extends upward to form a seat, a clamping column 205 extends horizontally on the surface of the sliding block 202 adjacent to the adjustment handle 1, a clamping slot 206 is formed in the clamping column 205, and a connecting hole through which the clamping column 205 passes and is limited by the clamping slot 206 is formed in the adjustment handle 1. As shown in fig. 4, the sliding block 202 is a concave structure, and includes a first side plate and a second side plate that are arranged oppositely and in parallel, the first side plate and the second side plate are fixedly connected through a connecting plate, and the clamping column 205 is arranged on the connecting plate; the first side plate and the second side plate are both provided with a chute 207. In order to realize the upward movement of the sliding block 202, the detent 203 can be disengaged from the shift groove 201, and as shown in fig. 7 and 9, the upper end of the inclined groove 207 is arranged adjacent to the adjustment handle 1 and the bottom end is arranged away from the adjustment handle 1 along the horizontal direction.

In this embodiment, as shown in fig. 1 and 5, the detent 203 is provided with an insertion end and a connection end, the insertion end can be inserted into the shift slot 201 to form a movable lock, the connection end is mounted on the inclined slot 207 through a cylindrical rod 208 extending from two sides, and since the detent 203 is connected with the inclined slot 207 through the cylindrical rod 208, the cylindrical rod 208 can move along the inclined slot 207, specifically, as can be seen from comparing fig. 6 and 8 or fig. 7 and 9, when the sliding block 202 is moved upwards by adjusting the handle 1, the inclined slot 207 can limit the detent 203, so as to drive the detent 203 to move rightwards to be removed from the shift slot 201, and at this time, the shift position can be adjusted upwards and downwards. Specifically, as shown in fig. 7, the latch 203 is a rectangular block structure, the size of the latch 203 is matched with the gap between two adjacent stoppers, and the front and rear side surfaces of the latch 203 are respectively provided with a cylindrical rod 208 to be correspondingly connected with the inclined groove 207 on the sliding block 202.

In the present embodiment, as shown in fig. 1, 7 and 9, the sliding block 202 and the sliding block return spring 204 are both accommodated in an adjusting base 209, the adjusting base 209 is disposed on a side of the backrest plate 1-2 away from the headrest 1-1 and is connected to the headrest 1-1 through the moving slot 1-3, and the adjusting base 209 can move up and down along with the headrest 1-1; the top end of the sliding block return spring 204 is fixed with the top wall of the adjusting base 209, and the bottom end is fixed with the top end of the sliding block 202. When the bayonet 203 is disengaged from the gear groove 201, and the headrest 1-1 moves up and down to a proper position, the sliding block 202 returns to an initial position under the action of the resilience force of the sliding block return spring 204, and drives the bayonet 203 to move leftwards and insert into the gear groove 201 again for limiting, and at the moment, up and down adjustment cannot be performed.

The working principle of the adjusting mechanism of the embodiment is as follows: as shown in fig. 8 and 9, during adjustment, one hand is required to press the adjustment base 209, the other hand is required to pull up the adjustment handle 1, so as to drive the sliding block 202 to move upwards and press the sliding block return spring 204, and during the process of moving the sliding block 202 upwards, the cylindrical rod 208 is in sliding fit connection with the inclined groove 207, so that the bayonet 203 is driven to move rightwards, and is removed from the gear groove 201; when the bayonet 203 is separated from the gear groove 201, the hand pressing the adjusting base 209 is loosened, the adjusting handle 1 drives the headrest 1-1 to move up and down for adjustment, and the adjusting base 209 moves synchronously with the headrest 1-1 in the up and down adjusting process.

The present embodiment also provides a child safety seat, including: a backrest plate 1-2, a headrest 1-1 which is arranged on the backrest plate 1-2 and can move up and down, and the height adjusting mechanism of the headrest. The child safety seat provided by the embodiment is more compact and light in structure and meets the market development requirements, and when the headrest 1-1 is adjusted through the headrest height adjusting mechanism, the operation is convenient.

It should be noted that, for those skilled in the art, without departing from the inventive concept, several variations and modifications can be made, which are within the scope of the present invention.

Claims (9)

1. The utility model provides a headrest height adjusting mechanism sets up on the seat including headrest and back board, draws the subassembly and is used for spacing the headrest locating component at height-adjusting with the headrest including the headrest, its characterized in that, headrest locating component includes:

a plurality of gear grooves are arranged and vertically distributed on the backrest plate;

the sliding block is connected with the headrest pulling assembly to drive the headrest pulling assembly to move upwards, the sliding block is of a hollow structure, and inclined grooves are respectively formed in the opposite side walls of the sliding block;

the clamping pin is provided with an inserting end and a connecting end, the inserting end can be inserted into the gear groove to form movable locking, and the connecting end is installed on the inclined groove through cylindrical rods extending from two sides so that the inserting end can exit the gear groove when the sliding block moves upwards.

2. The headrest height adjustment mechanism according to claim 1, wherein said headrest positioning assembly further comprises a sliding block return spring, said sliding block and said sliding block return spring both being housed within an adjustment base, said adjustment base being connected to said headrest through said backrest plate;

sliding block reset spring's one end with adjust the roof of base fixed, the other end with the sliding block is fixed.

3. The headrest height adjustment mechanism according to claim 1, wherein the headrest pulling assembly includes an adjustment knob, the adjustment knob being secured at a bottom end to the slide block and extending upwardly from a seat at a top end.

4. The headrest height adjusting mechanism according to claim 3, wherein a locking post horizontally extends from an end surface of the sliding block adjacent to the adjusting handle, a locking slot is formed on the locking post, and a connecting hole for the locking post to pass through and to be limited by the locking slot is formed on the adjusting handle.

5. The headrest height-adjusting mechanism according to claim 4, wherein the sliding block is integrally formed in a concave structure, and a concave opening end of the sliding block is disposed away from the catch post, and the inclined groove is provided on a side wall of the concave structure.

6. The headrest height adjustment mechanism according to claim 5, wherein, in the horizontal direction, an upper end of the inclined groove is disposed adjacent to the adjustment knob and a bottom end is disposed away from the adjustment knob.

7. The headrest height adjusting mechanism according to claim 1, wherein the backrest plate is vertically provided with a moving groove, a plurality of stoppers are uniformly distributed in the moving groove from top to bottom, and a gap between two adjacent stoppers forms the gear groove.

8. The headrest height adjustment mechanism of claim 7, wherein said latch is a rectangular block configuration and is sized to match a gap between two adjacent stops.

9. A child safety seat, comprising: a back board, a headrest provided to move up and down on the back board, and the headrest height adjusting mechanism according to any one of claims 1 to 8.

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