CN112918541B - Children's product and its backrest adjustment device - Google Patents

Abstract

The invention discloses a children's product and a backrest adjusting device, wherein the children's product comprises a bracket and a backrest, and the backrest is rotatably connected to the bracket; the backrest adjusting device comprises an adjusting part and two sets of left and right adjusting belts, each set of adjusting belts and an adjusting part There are adjustment components for retracting and unwinding the adjustment belts between them. One end of the adjusting strap is fixed on the bracket, and the other end is fixed on the backrest or the adjusting piece. The adjustment assembly at least includes a first positioning member relatively fixed on the backrest, and the adjustment belt is wound around the first positioning member. The adjustment belt has a stretching section and a storage section connected along its own length direction, the adjustment piece can be relatively moved along the up and down direction of the backrest, and the adjustment piece slides up and down relative to the backrest to change the length of the storage section. The children's product and the backrest adjusting device of the invention can adjust the angle of the backrest with one hand, and the operation is simple; there is no unnecessary adjustment belt exposed, and the appearance is good; the left and right sides of the backrest are always flush during the rotation process.

Description

Children's product and its backrest adjustment device

technical field

The invention relates to a children's product and a backrest adjusting device thereof.

Background technique

Many children's products, such as strollers, seat pockets, sleeping baskets, etc., have a backrest for supporting the back of the child. According to the different needs of the child when sitting or lying down, a device that can adjust the angle of the backrest needs to be provided. In the prior art, some backrest adjusting devices are arranged on both sides of the backrest, which requires two-hand adjustment, which is inconvenient to operate; some backrest adjusting devices can be operated with one hand only when adjusted in one direction, and can be rotated in the other direction (usually from the lying down position to the upright position). ) adjustment still requires two-hand operation. Chinese utility model patent CN206031454U discloses a stroller whose backrest can be adjusted with one hand, but the adjusting strap is exposed outside the backrest, and the more vertical the backrest is, the longer the exposed length is, which greatly affects the appearance.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a backrest adjusting device which can adjust the angle of the backrest with one hand, and the adjusting belt will not be exposed.

To achieve the above object, the technical scheme adopted in the present invention is:

A backrest adjustment device for children's products, the children's product includes a bracket and a backrest, the backrest is rotatably connected to the bracket, and the backrest adjustment device includes an adjustment member arranged on the backrest, which is separately arranged on the backrest. There are two sets of adjustment belts on the left and right sides of the adjustment piece. Between each group of the adjustment belts and the adjustment piece, there is an adjustment assembly for retracting the adjustment belt. A first fixed end and a second fixed end at different ends, the first fixed end is fixed on the bracket, and the second fixed end is fixed on the backrest or the adjusting member; the adjusting component at least It includes a first positioning member relatively fixedly arranged on the backrest, and the adjustment belt is wound around the first positioning member; , the stretching section is arranged between the first fixed end and the adjustment assembly, the storage section is arranged between the adjustment assembly and the second fixed end, and the adjustment piece can The up-and-down direction of the backrest is relatively movable on the backrest, and the adjusting member slides up and down relative to the backrest to change the length of the storage section.

Preferably, the adjusting assembly further includes a second positioning member, the second positioning member is fixed on the adjusting member, and the receiving section alternately bypasses the first positioning member and the second positioning member.

Further, all the first positioning members and the second positioning members are rollers, or, are cylinders, or, are any combination of rollers and cylinders.

Preferably, the backrest adjusting device further comprises a positioning belt, the positioning belt extending along the up-down direction of the backrest, and the adjusting member is slidably disposed on the positioning belt along the length extending direction of the positioning belt, The backrest adjusting device further includes a locking mechanism for locking the adjusting member and the positioning belt relative to each other.

Further, the backrest adjusting device further includes a fixing piece, the fixing piece is fixed on one end of the positioning belt, and the first positioning piece is fixed on the fixing piece.

Further, the locking mechanism includes a plurality of positioning teeth arranged on the positioning belt, the positioning teeth are arranged at intervals along the length extending direction of the positioning belt, the locking mechanism further includes a locking block, the locking A block is movably arranged on the adjusting member, the locking block has locking teeth matched with the positioning teeth, and the adjusting member is further provided with an unlocking structure for driving the locking teeth to move away from the positioning teeth , when the locking mechanism is in a locked state, the locking teeth cooperate with the positioning teeth to lock; when the locking mechanism is in an unlocked state, the locking teeth are disengaged from the positioning teeth.

Further, the lower surface of each of the positioning teeth is an inclined surface extending gradually outward from bottom to top, and the upper surface of each of the locking teeth is an inclined surface matched with the lower surface of the positioning teeth; each The upper surface of the positioning teeth is a horizontal plane, and the lower surface of each of the locking teeth is a horizontal plane matching with the lower surface of the positioning teeth.

Further, the locking mechanism further includes an elastic member for driving the locking teeth to move toward the positioning teeth, the locking block has an unlocking portion, the unlocking structure includes an unlocking block, and the unlocking block is movably arranged On the adjusting member, the unlocking block has a pushing portion that cooperates with the unlocking portion. When the locking mechanism is in a locked state, the pushing portion is disengaged from the unlocking portion, and the locking teeth are in the locked state. The elastic piece cooperates and locks with the positioning teeth under the force of the elastic piece; when the locking mechanism is in the unlocked state, the pushing part abuts on the unlocking part, and the locking teeth overcome the action of the elastic piece The force disengages the positioning teeth.

Another object of the present invention is to provide a children's product in which the angle of the backrest can be adjusted with one hand, and the adjustment belt is not exposed.

To achieve the above object, the technical scheme adopted in the present invention is:

A children's product, the children's product includes a bracket and a backrest, the bracket includes two sets of side brackets arranged on the left and right sides, and a support seat for carrying children, the support seat is arranged on the two sets of the side brackets The backrest is rotatably connected to the back of the support seat, the children's product further includes the backrest adjusting device, and the adjusting straps are arranged between the left and right sides of the adjusting assembly and the side brackets. between.

Preferably, the children's product is a stroller, a sleeping basket or a seat.

Due to the application of the above-mentioned technical solutions, the present invention has the following advantages compared with the prior art:

1) It is possible to control the up and down movement of the adjustment piece with one hand, so that the backrest can be rotated in both directions, and the angle of the backrest can be adjusted, which is easy to operate;

2) The storage section of the adjustment belt is located between the adjustment piece and the second fixed end, and there is no excess part outside the backrest exposed. In actual application, it is completely wrapped in the cloth cover of the backrest, ensuring aesthetics and practicability;

3) The left and right two sets of adjustment belts and adjustment components move synchronously, so that the left and right sides of the backrest are always flush during the rotation.

Description of drawings

1 is a schematic front view of a specific embodiment of the children's product and its backrest adjusting device of the present invention, wherein the backrest is in an upright state;

Accompanying drawing 2 is the enlarged schematic diagram at A in Fig. 1;

3 is a schematic side view of the children's product and its backrest adjusting device in the first embodiment, wherein the backrest is in an upright state;

4 is a schematic front view of the children's product and its backrest adjusting device in the first embodiment, wherein the backrest is in a half-upside-down state;

5 is a schematic side view of the children's product and its backrest adjusting device in Embodiment 1, wherein the backrest is in a half-upside-down state;

6 is a schematic front view of the children's product and its backrest adjusting device in the first embodiment, wherein the backrest is in a flat state;

7 is a schematic side view of the children's product and its backrest adjusting device in Embodiment 1, wherein the backrest is in a flattened state;

8 is a schematic diagram of the internal structure of the backrest adjusting device in the first embodiment, wherein the adjusting member is located at the highest position;

9 is a schematic diagram of the internal structure of the backrest adjusting device in the first embodiment, wherein the adjusting member is located in the middle position;

10 is a schematic diagram of the internal structure of the backrest adjusting device in the first embodiment, wherein the adjusting member is located at the lowest position;

Figure 11 is a schematic sectional view of A-A in Figure 8, wherein the locking device is in a locked state;

Figure 12 is a schematic sectional view of A-A in Figure 8, wherein the locking device is in an unlocked state;

13 is a schematic diagram of the internal structure of the backrest adjusting device in the second embodiment, wherein the adjusting member is located at the highest position;

14 is a schematic cross-sectional view of the backrest adjusting device in the third embodiment, wherein the locking device is in a locked state;

15 is a schematic cross-sectional view of the backrest adjusting device in the third embodiment, wherein the locking device is in an unlocked state;

16 is a schematic diagram of the internal structure of the backrest adjusting device in the fourth embodiment, wherein the locking device is in a locked state;

17 is a schematic diagram of the internal structure of the backrest adjusting device in the fourth embodiment, wherein the locking device is in a locked state;

Accompanying drawing 18 is B-B sectional schematic diagram in FIG. 16;

Accompanying drawing 19 is C-C sectional schematic diagram in FIG. 17;

20 is a schematic diagram of the internal structure of the backrest adjusting device in the fifth embodiment, wherein the locking device is in a locked state;

21 is a schematic diagram of the internal structure of the backrest adjusting device in the fifth embodiment, wherein the locking device is in an unlocked state;

22 is a schematic side view of the children's product and its backrest adjusting device in Embodiment 6, wherein the backrest is in an upright state;

Figure 23 is a schematic side view of the children's product and its backrest adjusting device in the sixth embodiment, wherein the backrest is in a half-upside-down state;

24 is a schematic side view of the children's product and its backrest adjusting device in Embodiment 6, wherein the backrest is in a flattened state;

Accompanying drawing 25 is the side view schematic diagram that the children's article in embodiment 6 is installed on the stroller;

Figure 26 is a schematic side view of the children's product and its backrest adjusting device in the seventh embodiment, wherein the backrest is in an upright state;

Figure 27 is a schematic side view of the children's product and its backrest adjusting device in Embodiment 7, wherein the backrest is in a flattened state;

Figure 28 is a schematic side view of the children's product installed on the stroller in the seventh embodiment;

Wherein: 100, a bracket; 101, a side bracket; 102, a support seat; 200, a backrest; 201, a guide; 300, a backrest adjustment device;

1. Adjustment belt; 1a, first fixed end; 1b, second fixed end; 11, stretch section; 12, storage section; 2, adjustment piece; 21, second positioning piece; 3, positioning belt; 31, positioning 4. Fixing part; 41. First positioning part; 5. Locking block; 51. Locking tooth; 52. Unlocking part; 6. Unlocking block; 61. Pushing part; 62. Knob part;

Detailed ways

The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", The azimuth or positional relationship indicated by "left-right direction", "height direction", "front-rear direction", etc. is based on Fig. 1. The azimuth or positional relationship shown when the adult pushing the stroller holds the push handle is only for convenience The invention is described and simplified without indicating or implying that the device or element referred to must have a particular orientation, have only a particular orientation, be constructed and operate in a particular orientation and therefore should not be construed as limiting the invention. Furthermore, the terms "first," "second," "third," etc. are used for descriptive purposes only and should not be construed to indicate or imply relative importance.

It should be noted that, unless otherwise specified, when a feature is called "fixed" or "connected" to another feature, it can be directly fixed or connected to another feature, or it can be indirectly fixed or connected to another feature. on a feature. Unless otherwise expressly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection, It can also be an electrical connection; it can be a direct connection, an indirect connection through an intermediate medium, or an internal connection between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in specific situations. In addition, the descriptions of upper, lower, left, right, etc. used in the present invention are only relative to the mutual positional relationship of each component of the present invention in the accompanying drawings.

Example 1

1 to 7, a children's product and its backrest adjusting device 300, wherein the children's product includes a bracket 100 and a backrest 200, the backrest 200 is rotatably connected to the bracket 100, and the backrest adjusting device 300 can adjust the relative position of the backrest 200. The rotation angle of the bracket 100 can meet the different needs of children such as sitting and lying down.

In this embodiment, taking a stroller as an example, the bracket 100 includes two sets of side brackets 101 arranged on the left and right sides, and a support seat 102 for carrying children. The support seat 102 is specifically a seat, and the support seat 102 is arranged in the two sets Between the side brackets 101 , the backrest 200 is rotatably connected to the rear of the support base 102 .

The backrest adjusting device 300 includes an adjusting member 2 arranged on the backrest 200 , and two sets of adjusting belts 1 respectively arranged on the left and right sides of the adjusting member 2 . The adjusting assembly, wherein, the adjusting member 2 and the adjusting assembly are arranged at the rear of the backrest 200, which is convenient for adults to operate behind the back; is always flush.

Referring to FIG. 8 , in this embodiment, the backrest adjusting device 300 further includes a positioning belt 3 and a fixing member 4 . The positioning belt 3 extends along the vertical direction of the backrest 200 , and the adjusting member 2 can slide along the lengthwise extending direction of the positioning belt 3 . Provided on the positioning belt 3 , the fixing member 4 is fixed on one end of the positioning belt 3 , and the backrest adjusting device 300 further includes a locking mechanism for locking the adjusting member 2 and the positioning belt 3 relative to each other.

Specifically, the adjustment belt 1 has a first fixed end 1a and a second fixed end 1b respectively disposed at opposite ends of its own longitudinal direction, wherein the first fixed end 1a is fixed on the bracket 100 , specifically, the pusher connected to the side bracket 101 The second fixed 1b end is connected to the fixed part 4 or the adjustment part 2. The adjustment belt 1 has a stretching section 11 and a receiving section 12 connected along its own length direction, and the two are actually integrally arranged. between the assembly and the second fixed end 1b.

Each set of adjustment components includes a first positioning member 41 fixed on the fixing member 4 and a second positioning member 21 fixed on the adjusting member 2. The first positioning member 41 and the second positioning member 21 may be rollers, Cylinders, or any combination of rollers and cylinders, when the rollers are used, the resistance to movement of the adjusting belt 1 is relatively smaller. In this embodiment, there is one first positioning member 41 and one second positioning member 21 in each group, the receiving section 12 bypasses the first positioning member 41 and the second positioning member 21 in sequence from the outside to the inside, and the second fixed end 1b is connected On the fixing member 4, in this way, the adjusting member 2 and the fixing member 4 are connected through a pulley relationship. When the adjusting member 2 slides up and down relative to the backrest 200, the length of the storage section 12 changes, and thus the length of the stretching section 11 changes accordingly. .

8 to 10 , in this embodiment, the fixing member 4 is located at the lower end of the positioning belt 3 . When the adjusting member 2 slides downward toward the fixing member 4 , the distance between the two becomes smaller, and the distance between the storage section 12 becomes smaller. The length is shortened, and the length of the stretching section 11 is correspondingly increased, so that the backrest 200 is tilted backward under the action of its own gravity, and the angle between the supporting surfaces of the backrest 200 and the support seat 102 is increased; There is a locking mechanism between them, and the adjusting member 1 can be locked at a desired position, so that the backrest 200 is fixed at a suitable angle; similarly, when the adjusting member 2 slides upward away from the fixing member 4, the length of the storage section 12 With the increase, the length of the stretch section 11 is correspondingly shortened, so that the backrest 200 is pulled upwards.

In addition, two sides of the backrest 200 are symmetrically fixed with guide members 201 , a middle portion of the guide member 201 and the backrest 200 are provided with perforations, and the two sets of adjustment straps 1 respectively pass through the perforations on the corresponding sides. In this way, the flushness of both sides of the backrest 200 can be further ensured.

It should be noted that, in this embodiment, the left and right adjustment belts 1 are actually set in one piece, but are fixed in the middle of the fixing member 4. In other embodiments, the two adjustment belts 1 may be independent of each other. Two, the second fixed end 1b of which is connected to the fixing member 4, the effect is the same.

In some embodiments, the fixing member 4 may not be provided, the first positioning member 41 is directly fixed on the backrest 200, and the second fixing end 1b of the adjustment belt 1 is directly connected to the backrest 200, which can achieve the same as the present invention. technical effect.

11 to 12, the specific structure of the locking mechanism in this embodiment is as follows:

The positioning belt 3 is provided with a plurality of positioning teeth 31. The positioning teeth 31 are arranged at intervals along the extending direction of the length of the positioning belt 3. The positioning teeth 31 are specifically arranged on the side of the positioning belt 3 away from the backrest 200. The backrest 200 extends in the left-right direction, the lower surface of each positioning tooth 31 is an inclined surface extending gradually outward from bottom to top, and the upper surface thereof is a horizontal plane.

The locking mechanism further includes a locking block 5, the locking block 5 is rotatably arranged on the adjusting member 2 through the rotating shaft a, the locking block 5 has a locking tooth 51 matched with the positioning tooth 31, and an unlocking part 52 for unlocking, the locking tooth 51 The unlocking portion 52 and the unlocking portion 52 are respectively provided on both sides of the rotating shaft a. Wherein, the upper surface of each locking tooth 51 is an inclined surface matched with the lower surface of the above-mentioned positioning tooth 31, and the lower surface of each locking tooth 51 is a horizontal surface matched with the lower surface of the positioning tooth 31, so that the locking mechanism can be realized. One-way locking: when the locking teeth 51 are in engagement with the positioning teeth 31, the lower surface of the locking teeth 51 abuts on the upper surface of the positioning teeth 31, and the adjusting member 2 cannot slide downward, but can slide upward under the action of external force , because the slope of the lower surface of the positioning teeth 31 provides sliding guides for the locking teeth 51 . The advantage of this design is that the adjusting member 2 will not be accidentally unlocked and slide down under the action of gravity, thus avoiding potential safety hazards; and when the adjusting member 2 needs to be slid up, it can be directly pulled up and adjusted, which is easy to operate.

It should be noted that, in some embodiments, the upper surface of each positioning tooth 31 and the lower surface of each locking tooth 51 may also be mutually matched inclined surfaces gradually extending outward from bottom to top, which can also realize the locking mechanism. One-way lock.

Further, the locking mechanism further includes an elastic member 7 for driving the locking teeth 51 to move toward the positioning teeth 31 , specifically a spring, which is provided between the inner side wall of the adjusting member 2 and the locking teeth 51 . The adjusting member 2 is also provided with an unlocking structure for driving the locking teeth 51 to move away from the positioning teeth 31 , and the unlocking structure specifically includes an unlocking block 6 . In this embodiment, the unlocking block 6 is rotatably arranged on the adjusting member 2 through the rotating shaft b. The unlocking block 6 has a pushing portion 61 matched with the unlocking portion 52 and a knob portion 62 for the user to operate. The knobs 62 are located on both sides of the rotating shaft b, and the knobs 62 are at least partially located outside the adjusting member 2 .

The steps of using the children's product and the backrest adjusting device 300 thereof in the present embodiment are described in detail below:

When the locking mechanism is in the locked state, the locking teeth 51 cooperate with the positioning teeth 31 to lock, the push portion 61 is disengaged from the unlocking portion 52, the locking teeth 51 are locked with the positioning teeth 31 under the force of the elastic member 7, and the backrest 200 is locked with the support The seat 102 is relatively locked at an angle.

When the angle between the backrest 200 and the supporting surface of the support base 102 needs to be increased, that is, when the backrest 200 is rotated backwards and downwards, the operator only needs to lift the knob 62 of the unlocking block 6 upwards with one hand to unlock the The block 6 rotates around the rotation axis b, so the pushing part 61 abuts on the unlocking part 52 and pushes the locking block 5 to rotate around the rotation axis a, the locking teeth 51 overcome the force of the elastic member 7 and disengage from the positioning teeth 31, so that the adjustment member 2 It can slide down along the positioning belt 3, the storage section 12 of the positioning belt 1 on both sides is shortened, the stretching section 11 is extended, the backrest 200 rotates backward under the action of its own gravity, and when it is adjusted to the desired angle, release the knob 62 , the locking teeth 51 are again locked in cooperation with the positioning teeth 31 under the force of the elastic member 7 .

When the angle between the backrest 200 and the supporting surface of the support base 102 needs to be reduced, that is, when the backrest 200 is rotated forward and upward, the same method as above can be used to unlock and adjust; the locking mechanism can also be used in one direction. With the feature of locking, without operating the handle portion 62, the adjusting member 2 can be directly pulled upwards to a suitable position.

Embodiment 2

Referring to FIG. 13 , the children's product and its back adjustment device 300 of this embodiment are basically the same as those of the first embodiment, and the main difference is that the connection mode of the adjustment belt 1 is different.

In this embodiment, the storage section 12 bypasses the first positioning member 41 and the second positioning member 21 in sequence from the outside to the inside, and the second fixed end 1b is connected to the adjusting member 2, that is, the storage section 12 in the first embodiment is smaller than the storage section 12 in the first embodiment. Reduced by about half the length.

In some other embodiments, the second positioning member 21 may not be provided, and the receiving section 12 is directly connected to the adjusting member 2 or the fixing member 4 after bypassing the first positioning member 41 .

In some other embodiments, the number of the first positioning member 41 and the second positioning member 21 can also be further increased, and the number of the first positioning member 41 and the second positioning member 21 on each side should be equal or different by one, all The first positioning members 41 are arranged at intervals along the left and right directions of the backrest, and all the second positioning members 21 are arranged at intervals along the left and right directions of the backrest. In this way, the storage section 12 bypasses all the first positioning members 41 and the second positioning members 41 and the second positioning members alternately and without repetition. The positioning member 21, the second fixed end 1b is connected to the adjusting member 2 or the fixing member 4, and the adjusting member 2 and the fixing member 4 are connected by a plurality of pulleys.

It should be noted that, the more the first positioning member 41 and the second positioning member 21 are, the more times the storage section 12 is wound up and down. On the one hand, when the adjusting member 2 moves the same distance, the length of the stretching section 11 changes. The larger the angle, the greater the change in the angle adjustment of the backrest 200, which is likely to cause potential safety hazards, or cause discomfort to children riding on it. The larger the frictional resistance, the less smooth the operation of the adjusting member 2 sliding up and down. Therefore, the number of the first positioning member 41 and the second positioning member 21 should not be too large.

Embodiment 3

Referring to FIG. 14 and FIG. 15 , the children's product and its back adjustment device 300 of this embodiment are basically the same as those of the first embodiment, and the main difference is that the specific settings of the locking mechanism and the unlocking structure are different.

In this embodiment, the positioning teeth 31 , the locking block 5 and the elastic member 7 are basically the same as those in the first embodiment, the difference is that the unlocking portion 52 of the locking block 5 has an inclined surface extending upwards gradually from the inside to the outside.

In this embodiment, the unlocking block 6 is slidably disposed on the adjusting member 2 along the up-down direction of the backrest 200 , and the adjusting member 2 has a sliding groove for providing sliding guidance for the unlocking block 6 . The unlocking block 6 has a pushing portion 61 matched with the unlocking portion 52, and a knob portion 62 for user operation, wherein the pushing portion 61 also has an inclined surface extending gradually upward from the inside to the outside. Outer side of adjustment piece 2.

When the locking mechanism is in the locked state, the locking teeth 51 cooperate with the positioning teeth 31 to lock, the push portion 61 is disengaged from the unlocking portion 52 , and the locking teeth 51 are locked with the positioning teeth 31 under the force of the elastic member 7 .

When the locking mechanism needs to be unlocked, the knob 62 is pressed with one hand, so that the unlocking block 6 moves toward the locking block 5, and the pushing portion 61 abuts on the unlocking portion 52 and drives the locking block 5 to rotate, so that the locking teeth 51 and the positioning teeth 31 is disengaged, and the adjusting member 2 can slide up and down and adjust the angle of the backrest 200 .

Embodiment 4

Referring to FIGS. 16 to 19 , the children's product and its back adjustment device 300 of this embodiment are basically the same as those of the first embodiment, and the main difference lies in the specific settings of the locking mechanism and the unlocking structure.

In this embodiment, the structural arrangement of the positioning teeth 31 is basically the same as that of the first embodiment, and the locking block 5 and the unlocking block 6 are both slidably disposed on the adjusting member 2 . The locking block 5 can slide in a direction perpendicular to the back surface of the backrest 200 , and the unlocking block 6 can slide along the left and right directions of the backrest 200 and is disposed on one side of the locking block 5 , specifically the left side in the figure.

One side of the locking block 5 facing the positioning belt 3 has locking teeth 51 matched with the positioning teeth 31 , and one side (ie, the left side) of the locking block 5 facing the unlocking block 6 has an unlocking portion 52 , and the unlocking portion 52 has A slope that gradually slopes outward from right to left.

The unlocking block 6 has a pushing portion 61 matched with the unlocking portion 52, and a knob portion 62 for user operation, wherein the pushing portion 61 also has a slope extending gradually outward from right to left, and the knob portion 62 is at least Parts are located outside the adjustment piece 2 .

When the locking mechanism is in the locked state, the locking teeth 51 cooperate with the positioning teeth 31 to lock, the push portion 61 is disengaged from the unlocking portion 52 , and the locking teeth 51 are locked with the positioning teeth 31 under the force of the elastic member 7 .

When the locking mechanism needs to be unlocked, press the handle portion 62 with one hand, so that the unlocking block 6 moves toward the locking block 5, the pushing portion 61 abuts on the unlocking portion 52 and drives the locking block 5 to move away from the positioning belt 3, thereby locking The teeth 51 are disengaged from the positioning teeth 31 , and the adjusting member 2 can slide up and down and adjust the angle of the backrest 200 .

Embodiment 5

Referring to FIG. 20 and FIG. 21 , the children's product and its back adjustment device 300 in this embodiment are basically the same as those in the third embodiment, and the main difference lies in the specific settings of the locking mechanism and the unlocking structure.

In this embodiment, the positioning teeth 31 are arranged on the left and right sides of the positioning belt 3, but only one of the positioning teeth 31 (the left side in this embodiment) is actually used, so in other embodiments, only the positioning teeth 31 can be arranged at Position one side of tape 3.

Correspondingly, the locking block 5 , the unlocking block 6 and the elastic member (not shown in the drawing of this embodiment) in this embodiment are all arranged on the left side of the positioning belt 3 . Wherein, the locking block 5 is rotatably connected to the adjusting member 2 through the rotating shaft a, and the axis line of the rotating shaft a extends perpendicular to the direction of the rear surface of the backrest. In the unlocked unlocking portion 52 , the locking teeth 51 are disposed toward the positioning teeth 31 , that is, to the right, and the unlocking portion 52 has an inclined surface extending upwards gradually from the inside to the outside.

Similar to the third embodiment, the unlocking block 6 is slidably disposed on the adjusting member 2 along the up-down direction of the backrest 200 , wherein the pushing portion 61 is also an inclined surface extending upwards gradually from the inside to the outside.

When the locking mechanism is in the locked state, the locking teeth 51 cooperate with the positioning teeth 31 to lock, the push portion 61 is disengaged from the unlocking portion 52 , and the locking teeth 51 are locked with the positioning teeth 31 under the force of the elastic member.

When the locking mechanism needs to be unlocked, the knob 62 is pressed with one hand, so that the unlocking block 6 moves toward the locking block 5, and the pushing portion 61 abuts on the unlocking portion 52 and drives the locking block 5 to rotate, so that the locking teeth 51 and the positioning teeth 31 is disengaged, and the adjusting member 2 can slide up and down to adjust the angle of the backrest 200 .

Embodiment 6

Referring to FIGS. 22 to 25 , the children's product and its back adjustment device 300 of this embodiment are basically the same as those of the first embodiment, and the main difference lies in the specific selection of the children's product.

In this embodiment, a seat pocket is selected for the children's product, wherein the first fixed end 1a of the adjusting belt 1 of the backrest adjusting device 300 is connected to the side armrest in the side bracket 101 of the seat pocket.

The seat pocket of this embodiment can be used alone, or can be used by grafting on other devices, as shown in FIG. 25 , when it is installed on the frame of a stroller.

Embodiment 7

Referring to FIGS. 26 to 28 , the children's product and its back adjustment device 300 of this embodiment are basically the same as those of the first embodiment, and the main difference lies in the specific selection of the children's product.

In this embodiment, a sleeping basket is used for children's products, which is suitable for younger infants and young children, wherein the first fixed end 1a of the adjusting belt 1 of the backrest adjusting device 300 is connected to the outer frame of the side bracket 101 of the sleeping basket.

The sleeping basket of this embodiment can be used alone, or can be grafted on other devices, as shown in FIG. 28 , when it is installed on the frame of a stroller.

To sum up, in the children's product and the backrest adjusting device of the present invention, the locking mechanism and the unlocking structure can be selected from different structures, and the children's product itself also has various forms, which are not limited to the above-mentioned embodiments.

The children's product of the present invention and its backrest adjusting device mainly have the following advantages:

1. The operator can control the adjustment member 2 and the knob 62 of the unlocking block 6 with one hand, and control the adjustment member 2 to slide up and down to realize the bidirectional rotation and angle adjustment of the backrest 200, while the other hand can hold the cart frame Wait, it is easy to operate.

2. The storage section 12 of the adjustment belt 1 is completely located between the adjustment member 2 and the fixing member 4, and no redundant parts other than the backrest 200 are exposed. In practical application, the backrest 200 is wrapped with a cloth cover, and the adjustment belt 1 is completely In the cloth cover, it cannot be seen from the outside, thus ensuring the beauty and practicability of children's products.

3. The left and right two sets of adjustment belts 1. The adjustment assembly and the guide member 201 are symmetrically arranged and move synchronously, so that the left and right sides of the backrest 200 are always flush during the rotation process, which ensures the comfort and safety of children's products.

The above-mentioned embodiments are only intended to illustrate the technical concept and characteristics of the present invention, and the purpose is to enable those who are familiar with the art to understand the content of the present invention and implement accordingly, and cannot limit the protection scope of the present invention by this. All equivalent changes or modifications made according to the spirit of the present invention should be included within the protection scope of the present invention.

Claims (10)

1. A backrest adjustment device for children's products, the children's product comprises a bracket and a backrest, and the backrest is rotatably connected to the bracket, characterized in that: the backrest adjustment device comprises an adjustment device arranged on the backrest There are two sets of adjustment belts respectively arranged on the left and right sides of the adjustment piece, and between each group of the adjustment belts and the adjustment piece is provided with an adjustment assembly for retracting the adjustment belt, wherein the adjustment belt It has a first fixed end and a second fixed end which are respectively arranged at opposite ends of its own length direction, the first fixed end is fixed on the bracket, and the second fixed end is fixed on the backrest or the adjusting member ; the adjusting assembly at least comprises a first positioning member relatively fixedly arranged on the backrest, and the adjusting belt is wound around the first positioning member; A stretching section and a storage section, the stretching section is arranged between the first fixed end and the adjustment component, the storage section is arranged between the adjustment component and the second fixed end, the The adjusting member is arranged on the backrest so as to be relatively movable along the up-down direction of the backrest, and the adjusting member slides up and down relative to the backrest to change the length of the storage section. 2 . The backrest adjusting device for children’s products according to claim 1 , wherein the adjusting assembly further comprises a second positioning member, the second positioning member is fixed on the adjusting member, and the storage section Alternately bypassing the first positioning member and the second positioning member. 3. The backrest adjusting device for children's products according to claim 2, wherein: all the first positioning members and the second positioning members are rollers, or, are cylinders, or, are any arbitrary combination of rollers and cylinders combination. 4. The backrest adjusting device for children's products according to claim 1, characterized in that: the backrest adjusting device further comprises a positioning belt, the positioning belt extending along the up-down direction of the backrest, and the adjusting member can The length extension direction of the positioning belt is slidably arranged on the positioning belt, and the backrest adjusting device further includes a locking mechanism for locking the adjusting member and the positioning belt relative to each other. 5 . The backrest adjusting device for children’s products according to claim 4 , wherein the backrest adjusting device further comprises a fixing piece, and the fixing piece is fixed on one end of the positioning belt, and the first positioning piece The piece is fixed on the fixing piece. 6. The backrest adjusting device for children's products according to claim 4, wherein the locking mechanism comprises a plurality of positioning teeth provided on the positioning belt, the positioning teeth extending along the length of the positioning belt The directions are spaced apart, the locking mechanism further includes a locking block, the locking block is movably arranged on the adjusting member, the locking block has locking teeth matched with the positioning teeth, and the adjusting member also There is an unlocking structure for driving the locking teeth to move away from the positioning teeth. When the locking mechanism is in a locked state, the locking teeth cooperate with the positioning teeth to lock; when the locking mechanism is in an unlocked state, The locking teeth are disengaged from the positioning teeth. 7. The backrest adjusting device for children's products according to claim 6, wherein the lower surface of each of the positioning teeth is an inclined surface extending gradually outward from bottom to top, and the upper surface of each of the locking teeth is The upper surface of each of the positioning teeth is a horizontal plane, and the lower surface of each of the locking teeth is a horizontal plane matched with the lower surface of the positioning teeth. 8 . The backrest adjusting device for children’s products according to claim 6 , wherein the locking mechanism further comprises an elastic member for driving the locking teeth to move toward the positioning teeth, and the locking block has an unlocking part. 9 . , the unlocking structure includes an unlocking block, the unlocking block is movably arranged on the adjusting member, and the unlocking block has a pushing portion matched with the unlocking portion, When the locking mechanism is in a locked state, the pushing portion is disengaged from the unlocking portion, and the locking teeth are locked with the positioning teeth under the force of the elastic member; When the locking mechanism is in an unlocked state, the pushing portion abuts on the unlocking portion, and the locking teeth are disengaged from the positioning teeth against the force of the elastic member. 9. A children's product, the children's product includes a bracket and a backrest, the bracket includes two groups of side brackets arranged on the left and right sides, and a support seat for carrying children, the support seat is arranged on the two groups of the side brackets. Between the side brackets, the backrest is rotatably connected to the rear of the support seat, and it is characterized in that: the children's product further comprises the backrest adjusting device according to any one of claims 1 to 8, the adjusting belt It is arranged between the left and right sides of the adjusting assembly and the side brackets. 10. The children's product according to claim 9, wherein the children's product is a stroller, a sleeping basket or a seat.

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