CN115817619A - Children's article and back adjustment mechanism thereof - Google Patents

Abstract

The invention discloses a children article and a backrest adjusting mechanism thereof, wherein the backrest adjusting mechanism comprises two adjusting belts and an adjusting device, the two adjusting belts are respectively connected with the adjusting device, each adjusting belt is provided with a first section and a second section which are connected along the length direction of the adjusting belt, and the thickness of the second section is smaller than that of the first section; the adjusting device is provided with a locking state and an unlocking state, and when the adjusting device is in the locking state, if the adjusting device is positioned at the first section, the adjusting device cannot relatively slide along the length extending direction of the first section; if the adjusting device is positioned at the second section, the adjusting device can relatively slide along the length extending direction of the second section; when the adjusting device is in the unlocking state, the adjusting device can slide relatively along the length extending direction of the first section and the second section. The invention can avoid the locking of the adjusting device at the second section, effectively avoids the state of the least stability of the children products and improves the safety of the children products in use.

Description

Children's article and its backrest adjustment mechanism

technical field

The invention relates to the field of children's products, in particular to a children's product and a backrest adjustment mechanism thereof.

Background technique

In all kinds of children's products such as baby strollers, children's sleeping baskets, and children's seats, the backrest with adjustable pitch angle is very common, which can adapt to the different posture requirements of children whether they are sitting or lying down. Generally speaking, considering the stability and safety of children's products when using them, the "most unfavorable angle" existing in the angle adjustment of the backrest deserves attention. The front and rear offset of the center of gravity is relatively large, which can easily cause children's products to fall backwards, posing a safety hazard. According to practical experience and research and development tests, the "most unfavorable angle" (the angle with the front horizontal plane) of a stroller is usually around 149°. In the prior art, some children's products can only realize the "half-lying" function, and the maximum inclination angle of the backrest does not exceed 130°, which does not involve the above-mentioned "most unfavorable angle" problem; while others can realize the "full lying" function In the children's products, the adjustment range of the backrest inclination is about 90°~160°. Unstable angle range, resulting in safety hazards.

Contents of the invention

One object of the present invention is to solve the problems existing in the prior art and provide a backrest adjustment mechanism for children's products that can effectively avoid the "most unfavorable angle" of the backrest and improve the stability and safety of the children's products.

In order to achieve the above object, the technical scheme adopted in the present invention is:

A backrest adjustment mechanism for children's products, the children's products include a body and a backrest rotatably arranged on the body, the backrest adjustment mechanism includes two adjustment belts, and the two adjustment belts are respectively arranged on the On the left and right sides of the backrest, the two adjustment straps are respectively connected to the body, and the backrest adjustment mechanism also includes an adjustment device, the two adjustment straps are respectively connected to the adjustment device, and the adjustment device is located on the the back of the backrest,

Each of the adjustment belts has at least one set of first section and second section connected along its length direction, and the thickness of the second section is smaller than the thickness of the first section;

The adjustment device has a locked state and an unlocked state. When the adjustment device is in the locked state, if the adjustment device is located at the first section, the adjustment device cannot be opposite to each other along the length extension direction of the first section. Sliding; if the adjusting device is located at the second section, the adjusting device can relatively slide along the length extension direction of the second section;

When the adjusting device is in an unlocked state, the adjusting device can slide relatively along the length extension direction of the first section and the second section.

In some embodiments, each of the adjustment straps has a connecting end and a free end respectively arranged at two different ends in the length direction of itself, the connecting end is connected to the body, and the first section is located close to the On one side of the connection end, the second section is located on the side close to the free end.

In some embodiments, each of the adjustment belts has a third section, the first section, the second section, and the third section are sequentially connected along the length direction of the adjustment belt, and the first section The thickness of the second section is smaller than the thickness of the third section; when the adjustment device is in a locked state, if the adjustment device is located at the third section, the adjustment device cannot extend along the length of the third section relative sliding direction; when the adjusting device is in an unlocked state, the adjusting device can slide relatively along the extending direction of the length of the third section.

In some embodiments, the backrest has a backrest surface for supporting children, and when the adjusting device is located at the first section of the two adjustment belts at the same time, the angle between the backrest surface and the horizontal plane is not greater than 145°; when the adjustment device is located at the third section of the two adjustment belts at the same time, the angle between the back surface and the horizontal plane is greater than 150°.

In some embodiments, the adjusting device includes a locking piece and a matching piece, the locking piece and the matching piece are relatively movable, a gap is formed between the locking piece and the matching piece, and the two The adjustment belt is passed through the gap at the same time; when the adjustment device is in a locked state, the gap has a first width, and the first width is greater than the sum of the thicknesses of the two second sections, and the locking The piece and the matching piece can form a clamp for the two first sections; when the adjusting device is in the unlocked state, the gap has a second width, and the second width is larger than the two first sections. The sum of the segment thicknesses.

In some embodiments, the adjusting device includes a locking piece and a matching piece, the locking piece and the matching piece are relatively movable, two gaps are formed between the locking piece and the matching piece, each Each of the gaps is threaded with one adjustment belt; when the adjustment device is in a locked state, each of the gaps has a first width, and the first width is greater than the thickness of one of the second sections, The locking piece and the matching piece can form a separate clamping of the two first sections; when the adjusting device is in an unlocked state, each of the gaps has a second width, and the second width greater than the thickness of one of said first segments.

In some embodiments, the locking part can move relative to the matching part along a first direction, and the matching part has two parts arranged on two sides of the locking part in different second directions, and the locking part There are two locking parts arranged on different sides of the second direction, and the gap is formed between the locking parts on the same side and the matching part, wherein the first direction is two adjustment The common extension direction of the belts, the second direction is the common thickness direction of the two adjustment belts; when the adjustment device is in the locked state, the locking part and the matching part on the same side can be located in both The adjustment belt between them forms a clamp; when the adjustment device is in the unlocked state, the locking part is relatively far away from the fitting part along the first direction; the adjustment device also includes a function for providing the locking The first elastic member moves relatively close to the matching member along the first direction with the required force.

In some embodiments, each of the locking portions extends obliquely along the first direction gradually toward the second direction, and each of the fitting parts is obliquely gradually toward the second direction along the first direction Extending, the oblique extension directions of the locking part on the same side and the fitting part are parallel to each other; along the first direction, there is a first channel opening with a closer distance and a farther distance between the two fitting parts The second passage opening, the first elastic member is used to provide the force required for the locking member to move from the second passage opening toward the first passage opening.

In some embodiments, each of the adjustment straps has a connection end connected to the body, each of the locking parts has a first protruding tooth protruding toward the matching part on the same side, and the first tooth There are at least two protruding teeth arranged at intervals along the first direction, and each of the first protruding teeth extends obliquely from the locking part toward a side away from the connecting end; each of the fitting parts There are second protruding teeth protruding toward the locking portion on the same side, at least two of the second protruding teeth are arranged at intervals along the first direction, and each of the second protruding teeth is formed from the matching The member gradually extends obliquely toward the side away from the connecting end.

In some embodiments, the adjusting device further includes an unlocking member, and the unlocking member can move relative to the locking member along a third direction, the third direction being two directions from the first direction and the second direction. Two perpendicular, the unlocking part has a first slope facing the locking part, the locking part has a second slope facing the first slope, the first slope and the second slope are respectively along the first slope The three directions gradually extend obliquely toward the first direction, the extension directions of the first slope and the second slope are parallel to each other, and the adjustment device further includes a function for providing the unlocking member to move away from each other relatively along the third direction. The second elastic member is the force required for the movement of the locking member.

Another object of the present invention is to provide a children's product with better stability and safety. In order to achieve the above object, the technical solution adopted by the present invention is: a children's product, which includes a main body, a backrest rotatably arranged on the main body, and the backrest adjustment mechanism.

Due to the application of the above-mentioned technical solution, the children's article and its backrest adjustment mechanism provided by the present invention have a special structural design for the adjustment belt. After calculation and testing, when the adjustment device is located at the second section of the adjustment belt, the backrest will be in the position of At its "most unfavorable angle", the center of gravity of children's products is unstable, and there is a danger of tipping over. The present invention thins the second section, which can prevent the adjustment device from being locked at the second section, that is, the adjustment device cannot be stably locked at the second section, and the backrest cannot be at the "most unfavorable angle". When it is used under, the adjustment device can only be locked at the thicker position such as the first section, even inexperienced parents will not misuse it, thus effectively avoiding the most unfavorable state of stability of children's products and improving children's safety. Safety when using the product.

Description of drawings

In order to illustrate the technical solutions of the present invention more clearly, the following will give a brief introduction to the drawings that need to be used in the description of the embodiments.

Accompanying drawing 1 is a schematic side view of a children's article in a specific embodiment of the present invention;

Accompanying drawing 2 is the three-dimensional schematic diagram of children's article in this embodiment;

Accompanying drawing 3 is the top view diagram of the backrest adjustment mechanism in this embodiment, wherein the adjustment device is located at the first section;

Accompanying drawing 4 is the top view diagram of the backrest adjustment mechanism in this embodiment, wherein the adjustment device is located at the second section;

Accompanying drawing 5 is the top view diagram of the backrest adjustment mechanism in this embodiment, wherein the adjustment device is located at the third section;

Accompanying drawing 6 is the partially exploded three-dimensional schematic diagram of the backrest adjustment mechanism in this embodiment;

Accompanying drawing 7 is the enlarged schematic diagram of place A in Fig. 6;

Accompanying drawing 8 is the three-dimensional exploded schematic view of the longitudinal section of the adjusting device in this embodiment;

Accompanying drawing 9 is the internal top view schematic diagram of the adjustment device in this embodiment located at the first section and in a locked state;

Accompanying drawing 10 is the internal top view schematic diagram of the adjustment device in this embodiment located at the first section and in the unlocked state;

Accompanying drawing 11 is the internal top view schematic diagram of the adjustment device in this embodiment located at the second section and in a locked state;

Accompanying drawing 12 is the schematic longitudinal sectional view of the adjusting device in the locking state in this embodiment;

Accompanying drawing 13 is the schematic longitudinal sectional view of the adjusting device in the unlocked state in this embodiment;

Accompanying drawing 14 is the side view schematic diagram of the backrest adjustment mechanism in another embodiment;

Accompanying drawing 15 is the schematic top view of the backrest adjustment mechanism in Fig. 14;

Accompanying drawing 16 is the side view diagram of the backrest adjustment mechanism in another embodiment;

Accompanying drawing 17 is the top view diagram of the backrest adjusting mechanism in Fig. 16;

Among them: 100, backrest adjustment mechanism; 200, body; 210, push rod; 300, backrest; 1001, rotation centerline; X, first direction; Y, second direction; Z, third direction;

110, adjustment belt; 110a, connection end; 110b, free end; 111, first section; 112, second section; 113, third section; 120, adjustment device; 120a, first channel opening; 120b, second channel Mouth; 121, housing; 121a, guide hole; 1211, limit flange; 122, locking piece; 122a, second slope; 1221, first convex tooth; , the unlocking part; 124a, the first slope; 1241, the limit hook; 125, the first elastic part; 126, the second elastic part; 130, the operating handle.

Detailed ways

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

Referring to FIG. 1 and FIG. 2 , this embodiment provides a children's article and its backrest adjustment mechanism 100 , the children's article at least includes a body 200 and a backrest 300 rotatably arranged on the body 200 . The children's articles in this embodiment specifically take a children's stroller as an example. Since the children's stroller often needs to be pushed and moved outdoors during use, its stability is particularly important. In other embodiments, the children's products suitable for the backrest adjustment mechanism 100 also include various products with the function of adjusting the pitch angle of the backrest, such as children's beds, children's sleeping baskets, and children's seats.

Unless otherwise specified, the descriptions of front, rear, left and right, up and down, etc. in this article are all defined based on the directions observed by the parents behind when the children's products are placed on a horizontal plane and used normally in Figure 1. It is only for the convenience of description and understanding, and does not mean that the children's article and its backrest adjustment mechanism 100 must have a specific use direction, and should not be construed as a limitation of the present invention.

In this embodiment, the body 200 of the children's stroller is the stroller frame. The body 200 includes two push rods 210 on the left and right. The backrest 300 is arranged between the two push rods 210. It is rotatably connected with the body 200 , and the rotation centerline 1001 extends along the left-right direction of the body 200 . It should be noted that, in order to clearly show the structure of each component, the backrest 300 in the figure only shows the backrest bar around it. In actual products, the backrest 300 also includes support structures such as cloth covers or back boards connected to the backrest bar; In other embodiments, the specific shape and structure of the backrest 300 may also adopt other existing technologies, which are not limited in the present invention.

In this embodiment, the backrest 300 has at least a relatively vertical sitting position and a relatively horizontal lying position, and the backrest adjustment mechanism 100 is used to adjust the pitch angle of the backrest 300 . The backrest adjustment mechanism 100 here specifically can realize the stepless adjustment of the backrest 300 within a certain angle, and at the same time, the backrest adjustment mechanism 100 can avoid the "most unfavorable angle" of the backrest 300, and does not allow the backrest 300 to be used in an unstable position of the center of gravity. Thereby, the safety of using the stroller is improved.

1 to 6, the backrest adjustment mechanism 100 includes an adjustment device 120 and two adjustment belts 110, the two adjustment belts 110 are respectively arranged on the left and right sides of the backrest 300, and the two adjustment belts 110 are respectively connected with the body 200, and The two adjustment belts 110 are respectively connected with the adjustment device 120 , and the adjustment device 120 is located at the rear side of the backrest 300 . In this embodiment, each adjustment belt 110 has a connection end 110a and a free end 110b respectively arranged at two ends of its own length in different directions, wherein the connection end 110a is connected to the body 200, specifically to the push rod 210 on the same side , the free end 110b is located at the rear side of the backrest 300 . The adjusting device 120 can slide between the connecting end 110a and the free end 110b of the two adjusting belts 110 at the same time. In this way, the part of the adjustment belt 110 between the adjustment device 120 and the two connecting ends 110a can form a support for the backrest 300. The shorter the length of the adjustment belt 110, the smaller the angle between the backrest 300 and the front horizontal plane. The closer the backrest 300 is to the sitting position; on the contrary, the longer the length of the adjustment belt 110 is, the larger the angle between the backrest 300 and the front horizontal plane is, and the closer the backrest 300 is to the lying position. Parents can change the length of the adjustment belt 110 between the adjustment device 120 and the two connecting ends 110 a by changing the relative position of the adjustment device 120 on the adjustment belt 110 , and then can adjust the pitch angle of the backrest 300 . In this embodiment, the free ends 110b of the two adjustment belts 110 are fixed together, and are further provided with an operating handle 130 that can be held by parents, so as to facilitate operation. In other embodiments, the two adjustment belts 110 can also be two parts of the same belt which are integrally arranged; in other embodiments, the free ends 110b of the two adjustment belts 110 can also be arranged separately and not connected to each other.

Referring to Figures 2 to 8, in order to describe the specific structure of the adjusting device 120 more clearly, an XYZ three-dimensional coordinate system is established with the adjusting device 120 as a reference in this embodiment, wherein the first direction X, the second direction Y, The third direction Z is perpendicular to each other, the first direction X is the common extension direction of the two adjustment belts 110 , and the second direction Y is the common thickness direction of the two adjustment belts 110 . It should be noted that the backrest adjustment mechanism 100 shown in FIG. 2 is in a state when someone pulls the operating handle 130 with an external force. In actual use, since the adjustment belt 110 is a flexible belt, when there is no external force, the free end 110b will naturally sag, driving the adjustment device 120 connected to the adjustment belt 110 to move, and the specific orientation of the adjustment device 120 will also be affected by its own gravity and The angle of the backrest 300 is affected, so the XYZ three-dimensional coordinate system will change in the absolute space, and cannot be completely described by the concepts of front and back, left and right, up and down in the absolute space. Further, referring to FIG. 2, it can be seen that when the backrest adjustment mechanism 100 is installed on the children's product for use, the two connecting ends 110a are respectively arranged on the left and right sides of the backrest 300 and extend toward each other, and each adjustment belt 110 is from the connecting end 110a to the free end. 110b generally undergoes a converging angle change at the adjustment device 120 , so there will be "the common extension direction of the two adjustment belts 110" and "the common thickness direction of the two adjustment belts 110" at the adjustment device 120 .

3 to 5, in this embodiment, the two adjustment belts 110 have the same structure and are arranged symmetrically, and each adjustment belt 110 has a first section 111 and a second section 112 that are successively connected along its own length direction. And the third section 113, wherein the first section 111 is located on the side closest to the connecting end 110a, the second section 112 is located in the middle, and the third section 113 is located on the side closest to the free end 110b. The thickness of the first segment 111 is equal or approximately equal to the thickness of the third segment 113 , and the thickness of the second segment 112 is the smallest. In this embodiment, the length occupied by the second section 112 is the shortest, and the length occupied by the first section 111 is the longest. In other embodiments, there may be more than one set of the first section 111 and the second section 112. For example, when the backrest 300 has multiple discontinuous angle ranges that need to be avoided, multiple sections may be arranged alternately on the adjustment belt 110. The first segment 111 and the second segment 112 are different in thickness.

In this embodiment, the adjusting device 120 has a locked state and an unlocked state. When the adjustment device 120 is in the locked state, if the adjustment device 120 is located at the first section 111, the adjustment device 120 cannot slide relatively along the length extension direction of the first section 111; if the adjustment device 120 is located at the second section 112, the adjustment The device 120 can slide relatively along the extending direction of the length of the second section 112 ; When the adjusting device 120 is in an unlocked state, the adjusting device 120 can slide relatively along the length extension direction of any one of the first section 111 , the second section 112 , and the third section 113 . In other words, the adjusting device 120 can be locked and unlocked at the first segment 111 and the third segment 113, thereby realizing the angle adjustment of the backrest 300; but the adjusting device 120 cannot be locked at the second segment 112, when the adjusting device 120 slides to the second segment When at the second section 112, it can only choose to continue sliding to the first section 111 or the third section 113, but cannot stay at the second section 112 for use.

Referring to Fig. 1 and Fig. 2, in this embodiment, the backrest 300 has a backrest surface (not shown in the figure) for supporting a child. When the adjustment device 120 is located at the first section 111 of the two adjustment belts 110 at the same time, the angle between the back surface and the front horizontal plane is not greater than 145°; when the adjustment device 120 is located at the third section 113 of the two adjustment belts 110 at the same time When in the position, the angle between the backrest and the horizontal plane is greater than 150°. That is to say, in this embodiment, the thinning design of the second section 112 prevents the adjustment device 120 from being locked at the second section 112 and prevents the backrest 300 from being used within an unstable angle range of 145°-150°. In other embodiments, the angle range specifically avoided by the second section 112 can be adjusted, and generally needs to cover the "most unfavorable angle" specified by the industry, that is, 149°. In some embodiments, the adjustment belt 110 may not be provided with the third section 113, and the adjustment device 120 can only be locked and adjusted on the first section 111. When the adjustment device 120 slides to the second section 112, it will be directly under the action of gravity Slide to the bottom of the adjustment belt 110, and be received by the free end 110b or the operating handle 130, at this moment, the backrest 300 is directly transformed into a stable full-lying state.

Referring to FIGS. 6 to 13 , in this embodiment, the adjusting device 120 specifically includes a housing 121 , a locking member 122 , a matching member 123 , an unlocking member 124 , a first elastic member 125 , a second elastic member 126 and the like. Wherein, the casing 121 is the casing of the whole adjusting device 120 , which plays the role of installing and accommodating other components. The casing 121 is provided with guide holes 121a through which the two adjusting belts 110 can respectively pass. Seen from the perspective shown in FIG. 6 , the housing 121 has an upward opening, and the unlocking member 124 is disposed at the opening so as to be relatively movable along the third direction Z. As shown in FIG. 8 and 12, the opening of the housing 121 has a limiting flange 1211, the unlocking member 124 has a limiting hook 1241 that can be hooked on the limiting flange 1211, and the limiting flange 1211 is connected to the limiting flange 1211. The positioning hook 1241 constitutes a limiting structure between the unlocking member 124 and the housing 121 , and can prevent the unlocking member 124 from detaching from the housing 121 along the third direction Z.

In this embodiment, the locking piece 122 and the matching piece 123 are arranged to be able to move relative to each other, two gaps are formed between the locking piece 122 and the matching piece 123 , and an adjustment belt 110 is passed through each gap. 9 and 11, when the adjustment device 120 is in the locked state, each gap has a first width, the first width is greater than the thickness of a second section 112, the locking part 122 and the matching part 123 can form a pair of two The first section 111 of the strip is clamped separately. Referring to FIG. 10 , when the adjusting device 120 is in an unlocked state, each gap has a second width, and the second width is greater than the thickness of one first segment 111 . Similarly, when the adjusting device 120 is in the locked state, the locking member 122 and the matching member 123 can respectively clamp the two third segments 113; and when the adjusting device 120 is in the unlocked state, the second width is larger than one third segment. The thickness of segment 113. That is to say, no matter whether the adjusting device 120 is in the locked state or the unlocked state, the locking part 122 and the matching part 123 cannot clamp the second section 112 , and the adjusting device 120 cannot fix the position at the second section 112 .

Further, referring to FIG. 9 to FIG. 11 , in this embodiment, the locking piece 122 can move relative to the matching piece 123 along the first direction X, and the matching piece 123 has two different second directions Y that are separately set on the locking piece 122 . The locking part 122 has two locking parts on different sides in the second direction Y, and the above-mentioned gap is formed between the locking parts on the same side and the matching part 123 . When the adjusting device 120 is in the locked state, the locking part and the matching part 123 on the same side can clamp the adjusting belt 110 between them; when the adjusting device 120 is in the unlocked state, the locking part faces each other along the first direction X away from the fitting 123 . In this embodiment, the first elastic member 125 is used to provide the force required for the locking part to move relatively close to the matching member 123 along the first direction X, where the first elastic member 125 is specifically arranged between the locking member 122 and the housing 121 springs between.

Referring to Fig. 9 to Fig. 11, in this embodiment, each locking portion extends obliquely along the first direction X gradually toward the second direction Y, and each fitting 123 gradually toward the second direction Y along the first direction X Extending obliquely, the obliquely extending directions of the locking portions on the same side and the matching member 123 are parallel to each other, and the obliquely extending directions of the locking portions on both sides are opposite. Along the first direction X, there is a first channel opening 120 a closer to the distance and a second channel opening 120 b farther away between the two fitting parts 123, and the first elastic member 125 is used to provide the locking member 122 from the second channel The force required to move the port 120b toward the first channel port 120a. Viewed from the perspective shown in FIG. 9, the first channel opening 120a is on the left side, and the second channel opening 120b is on the right side. The two locking portions of the locking member 122 roughly form an isosceles trapezoidal shape. When the right side moves against the elastic force of the first elastic part 125 , the two locking parts move away from the corresponding matching part 123 at the same time.

In this embodiment, each locking part has a first protruding tooth 1221 protruding toward the matching part 123 on the same side, and there are at least two first protruding teeth 1221 arranged at intervals along the first direction X. There are two, and each first protruding tooth 1221 extends obliquely from the locking member 122 gradually toward a side away from the connecting end 110 a (right side shown in FIG. 9 ). Correspondingly, each fitting 123 has a second protruding tooth 1231 protruding toward the locking portion on the same side, and there are at least two second protruding teeth 1231 arranged at intervals along the first direction X, here specifically five Each second protruding tooth 1231 extends obliquely from the fitting part 123 toward a side away from the connecting end 110a gradually. It can be seen from FIG. 2 that when the children's product is actually used, the inclined extending direction of the first protruding teeth 1221 and the second protruding teeth 1231 is generally downward. When the backrest adjustment mechanism 100 is installed on the children's product, under the gravity of the backrest 300 , the adjustment device 120 tends to move downward, while the adjustment belt 110 tends to move upward relative to the adjustment device 120 . From the perspective shown in FIG. 9 , the adjustment belt 110 has a tendency to move leftward relative to the adjustment device 120 . At this time, since the inclination direction of the first convex tooth 1221 and the second convex tooth 1231 is opposite to the movement trend direction of the adjustment belt 110, the first convex tooth 1221 and the second convex tooth 1231 can better play a role of friction support, Prevent the adjustment belt 110 from slipping, so that the locking of the adjustment device 120 is more stable.

Referring to FIG. 8 , FIG. 12 and FIG. 13 , in this embodiment, the unlocking member 124 can move along the third direction Z relative to the locking member 122 . The unlocking member 124 has a first inclined surface 124a facing the locking member 122, the locking member 122 has a second inclined surface 122a facing the first inclined surface 124a, and the first inclined surface 124a and the second inclined surface 122a gradually move towards the first direction X along the third direction Z respectively. Extending obliquely, the extension directions of the first slope 124a and the second slope 122a are parallel to each other. The second elastic member 126 is used to provide the force required for the unlocking member 124 to move relatively away from the locking member 122 along the third direction Z. a compression spring. From the perspective shown in FIG. 12 , the first inclined surface 124 a and the second inclined surface 122 a gradually extend forward from top to bottom, and the second elastic member 126 is used to drive the unlocking member 124 to move upward. In this way, when the parents press the unlocking part 124 to move downward along the third direction Z, the unlocking part 124 can drive the locking part 122 to move away from the fitting part 123 along the first direction X through the first slope 124a (that is, to move to the right in FIG. 12 ). ), so that the adjustment device 120 is converted into an unlocked state. When the pressure on the unlocking member 124 is removed, under the cooperative action of the first elastic member 125 and the second elastic member 126, the unlocking member 124 moves upwards, the locking member 122 moves to the left, and the adjusting device 120 is automatically converted into a locked state.

It should be noted that, in other embodiments, the adjusting device 120 may adopt a different structure from that in this embodiment. For example, Fig. 14 and Fig. 15 have shown a kind of regulating device 120, Fig. 16 and Fig. 17 have shown another kind of regulating device 120, the specific internal structure of these two kinds of regulating device 120 all can adopt prior art, it and The biggest difference of the adjusting device 120 in this embodiment is that the adjusting device 120 here includes a locking piece 122 and a matching piece 123, the locking piece 122 and the matching piece 123 can be arranged to be relatively movable, and the locking piece 122 and the matching piece 123 are formed. There is a gap, and the two adjustment belts 110 are passed through the gap at the same time. When the adjusting device 120 is in the locked state, the gap has a first width, and the first width is greater than the sum of the thicknesses of the two second sections 112 , and the locking piece 122 and the matching piece 123 can form a clamp for the two first sections 111 ; When the adjusting device 120 is in the unlocked state, the gap has a second width, and the second width is greater than the sum of the thicknesses of the two first sections 111 . When the two adjustment straps 110 further have a third segment 113, when the adjustment device 120 is in the locked state, the locking member 122 and the matching member 123 can form a clamp to the two third segments 113; when the adjustment device 120 is in the unlocked state Next, the second width is greater than the sum of the thicknesses of the two third segments 113 .

That is to say, the adjusting device 120 may not be limited to the structure described in this embodiment, but they are all based on the principle of changing the gap between the locking piece 122 and the matching piece 123, by clamping the first section 111 or the third section 113 and releasing realize the conversion of the adjusting device 120 between the locked state and the unlocked state. Further, since the thickness of the second section 112 is significantly smaller than the thickness of the first section 111 and the third section 113, the locking piece 122 and the matching piece 123 cannot form a clamp on the second section 112, so as to avoid the backrest 300 in the present invention. The purpose of the most unfavorable angle.

To sum up, the children's product and its backrest adjustment mechanism 100 provided in this embodiment can avoid the most unfavorable state of stability of children's products such as strollers by adjusting the belt 110 between thick and thin, and improve the use of children's products. safety.

The above-mentioned embodiments are only to illustrate the technical conception and characteristics of the present invention. Substantial equivalent changes or modifications shall fall within the protection scope of the present invention.

Claims (10)

1. The utility model provides a back adjustment mechanism for children's articles for use, children's articles for use include the body, set up with rotating back on the body, back adjustment mechanism includes two regulation bands, two the regulation band branch is located the left and right sides of back, two the regulation band respectively with this body coupling, back adjustment mechanism still includes adjusting device, two the regulation band respectively with adjusting device connects, adjusting device is located the rear side of back, its characterized in that:

each adjusting belt is provided with at least one group of first sections and second sections which are connected along the length direction of the adjusting belt, and the thickness of each second section is smaller than that of each first section;

the adjusting device is provided with a locking state and an unlocking state, and when the adjusting device is in the locking state, if the adjusting device is positioned at the first section, the adjusting device cannot relatively slide along the length extending direction of the first section; if the adjusting device is positioned at the second section, the adjusting device can slide relatively along the length extension direction of the second section;

when the adjusting device is in an unlocked state, the adjusting device can slide relatively along the length extending direction of the first section and the second section.

2. The backrest adjustment mechanism for children's products according to claim 1, characterized in that: each adjusting belt is provided with a connecting end and a free end which are respectively arranged at two ends of the adjusting belt, wherein the two ends are different in the length direction of the adjusting belt, the connecting end is connected with the body, the first section is positioned at one side close to the connecting end, and the second section is positioned at one side close to the free end.

3. The backrest adjustment mechanism for children's products according to claim 1, characterized in that: each adjusting belt is provided with a third section, the first section, the second section and the third section are sequentially connected along the length direction of the adjusting belt, and the thickness of the second section is smaller than that of the third section; when the adjusting device is in a locked state, if the adjusting device is positioned at the third section, the adjusting device cannot relatively slide along the length extending direction of the third section; when the adjusting device is in an unlocked state, the adjusting device can slide relatively along the length extending direction of the third section.

4. A back adjustment mechanism for children's products according to claim 3, wherein: the backrest is provided with a backrest surface for supporting a child, and when the adjusting device is simultaneously positioned at the first sections of the two adjusting belts, the included angle between the backrest surface and the horizontal plane is not more than 145 degrees; when the adjusting device is simultaneously positioned at the third sections of the two adjusting belts, the included angle between the backrest surface and the horizontal plane is more than 150 degrees.

5. The backrest adjustment mechanism for children's products according to claim 1, characterized in that: the adjusting device comprises a locking piece and a matching piece, the locking piece and the matching piece can be arranged in a relatively movable mode, a gap is formed between the locking piece and the matching piece, and the two adjusting belts are simultaneously arranged in the gap in a penetrating mode;

when the adjusting device is in a locking state, the gap has a first width which is larger than the sum of the thicknesses of the two second sections, and the locking piece and the matching piece can form clamping on the two first sections; when the adjustment device is in the unlocked state, the gap has a second width that is greater than the sum of the thicknesses of the two first segments.

6. The backrest adjustment mechanism for children's products according to claim 1, characterized in that: the adjusting device comprises a locking piece and a matching piece, the locking piece and the matching piece can be arranged in a relatively movable mode, two gaps are formed between the locking piece and the matching piece, and one adjusting belt penetrates through each gap;

when the adjusting device is in a locking state, each gap has a first width, the first width is larger than the thickness of one second section, and the locking piece and the matching piece can form respective clamping on the two first sections; when the adjusting device is in an unlocked state, each gap has a second width, and the second width is greater than the thickness of one first section.

7. The backrest adjustment mechanism for a children's article according to claim 6, characterized in that: the locking piece can move relative to the matching piece along a first direction, the matching piece is provided with two locking parts which are respectively arranged on two sides of the locking piece, which are different in a second direction, the locking piece is provided with two locking parts which are respectively arranged on two sides of the locking piece, which are different in the second direction, and the gap is formed between the locking parts and the matching piece, wherein the first direction is the common extending direction of the two adjusting belts, and the second direction is the common thickness direction of the two adjusting belts;

when the adjusting device is in a locking state, the locking part and the matching piece on the same side can clamp the adjusting belt positioned between the locking part and the matching piece; when the adjusting device is in an unlocked state, the locking part is relatively far away from the mating part along the first direction; the adjusting device further comprises a first resilient member for providing a force required for the locking portion to move relatively close to the mating member in the first direction.

8. The backrest adjustment mechanism for a children's article according to claim 7, characterized in that: each locking part extends along the first direction and gradually inclines towards the second direction, each matching piece extends along the first direction and gradually inclines towards the second direction, and the locking parts and the matching pieces on the same side are parallel to each other in the inclined extending directions;

along the first direction, a first passage opening with a short distance and a second passage opening with a long distance are arranged between the two fitting parts, and the first elastic element is used for providing acting force required by the locking element to move from the second passage opening to the first passage opening.

9. The backrest adjustment mechanism for a children's article according to claim 7, characterized in that: each adjusting belt is provided with a connecting end connected with the body, each locking part is provided with first convex teeth protruding towards the matching piece on the same side, the first convex teeth are provided with at least two convex teeth arranged at intervals along the first direction, and each first convex tooth extends from the locking piece in an inclined mode towards one side far away from the connecting end; each of the mating pieces is provided with second convex teeth protruding towards the locking part on the same side, the second convex teeth are provided with at least two convex teeth arranged at intervals along the first direction, and each second convex tooth gradually extends from the mating piece in an inclined mode towards one side far away from the connecting end; and/or the presence of a gas in the gas,

adjusting device still includes the deblocking piece, the deblocking piece can follow the third direction for the locking piece motion, the third direction with first direction two liang of verticality of second direction, the deblocking piece has the orientation the first inclined plane of locking piece, the locking piece has the orientation the second inclined plane on first inclined plane, first inclined plane with the second inclined plane is followed respectively the third direction moves towards gradually the first direction slope extends, first inclined plane with the extending direction on second inclined plane is parallel to each other, adjusting device still includes and is used for providing the deblocking piece is followed the third direction is kept away from relatively the second elastic component of the required effort of locking piece motion.

10. A children's article, characterized in that: the children's article comprises a body, a backrest rotatably arranged on the body, and a backrest adjusting mechanism according to any one of claims 1 to 9.

Images