CN217218608U

CN217218608U - Safety belt adjusting structure, backrest structure and seat

Info

Publication number: CN217218608U
Application number: CN202123369481.8U
Authority: CN
Inventors: 李绍钦; 姜密
Original assignee: Dongguan Jinwang Children Products Co ltd
Current assignee: Dongguan Jinwang Children Products Co ltd
Priority date: 2021-12-28
Filing date: 2021-12-28
Publication date: 2022-08-19
Anticipated expiration: 2031-12-28
Also published as: WO2023124862A1

Abstract

The application discloses a safety belt adjusting structure, which comprises a backrest and a safety belt arranged on the backrest, wherein the safety belt comprises a shoulder belt, the end part of the shoulder belt is provided with a first fixing structure, the backrest is provided with a first fixing hole arranged along the length direction of the backrest and a first adjusting hole arranged along the height direction of the backrest, and the first fixing hole and the first adjusting hole penetrate through the backrest; the first fixing hole is a long hole and is arranged close to the backrest from the inner side of the backrest to the outer side of the backrest in a downward inclination mode along the height direction of the backrest; the first fixing holes are arranged at intervals along the height direction of the backrest, and the first adjusting holes are communicated with the first fixing holes; when the backrest is fixed, the shoulder belt passes through one of the first fixing holes and is limited to be separated from the backrest by the first fixing structure; when the adjusting device is adjusted, the shoulder belt can move to other first fixing holes along the first adjusting holes. The application also discloses a backrest structure and a seat. The application has a better constraint effect.

Description

Safety belt adjusting structure, backrest structure and seat

Technical Field

The application relates to the technical field of seats, in particular to a safety belt adjusting structure, a backrest structure and a seat.

Background

The safety belt among children's dining chair or the children's safety seat among the prior art generally can adjust, but generally more can only adjust the length of the baldric of safety belt, but has the height that can adjust the baldric at least, consequently leads to current safety belt can not satisfy the children of different age brackets and uses, and simultaneously, current baldric can not laminate well with children's shoulder, synthesizes and leads to the baldric to drop easily in the use, can't play fine restraint effect.

Therefore, a safety belt adjusting structure, a backrest structure and a seat with good restraining effect need to be designed.

SUMMERY OF THE UTILITY MODEL

The utility model provides a structure, back structure and seat are adjusted to safety belt, can conveniently will adjust the height of baldric in order to adapt to the user's of different age brackets or height user's user demand, and the baldric can be laminated with user's shoulder simultaneously, has better restraint effect to the aim at overcoming prior art's not enough.

The technical scheme of the application provides a safety belt adjusting structure, which comprises a backrest and a safety belt arranged on the backrest, wherein the safety belt comprises a shoulder belt, and a first fixing structure is arranged at the end part of the shoulder belt;

the backrest is provided with a first fixing hole arranged along the length direction of the backrest and a first adjusting hole arranged along the height direction of the backrest, and the first fixing hole and the first adjusting hole penetrate through the backrest;

the first fixing hole is a long hole and is arranged close to the backrest from the inner side of the backrest to the outer side of the backrest in a downward inclined mode along the height direction of the backrest;

the first fixing holes are arranged at intervals along the height direction of the backrest, and the first adjusting holes communicate the first fixing holes;

when the backrest is fixed, the shoulder strap passes through one of the first fixing holes and is limited to be separated from the backrest by the first fixing structure;

when the shoulder belt is adjusted, the shoulder belt can move to other first fixing holes along the first adjusting holes.

Preferably, the first fixing structure is a slider structure, and the slider structure is arranged on the back surface of the backrest in a sliding manner and can slide along the height direction of the backrest;

when the backrest is fixed, the sliding block structure covers the first fixing hole, the shoulder belt passes through the first fixing hole, and the sliding block structure abuts against the back face of the backrest and limits the shoulder belt to be separated from the backrest;

during adjustment, the sliding block structure covers the first adjusting hole and slides along the height direction of the backrest, and the shoulder belt penetrates through the first adjusting hole and can move along the first adjusting hole.

Preferably, the back of the backrest is provided with a sliding groove corresponding to the first fixing hole and the first adjusting hole, and the sliding block structure is slidably arranged in the sliding groove.

Preferably, the backrest is further provided with a second fixing hole and a second adjusting hole, the second fixing holes are arranged at intervals along the height direction of the backrest, the second adjusting hole is communicated with the second fixing holes, and the second fixing holes are arranged on one side of the first fixing holes.

Preferably, a communication hole is provided between the first and second regulation holes, and the communication hole communicates the first and second regulation holes.

Preferably, the first fixing structure is a clamping structure connected with one end of the shoulder strap penetrating out of the backrest back;

when the backrest is fixed, the clamping structure is abutted against the back face of the backrest and limits the shoulder belt from being separated from the backrest.

Preferably, the first securing structure is formed by tying knots in the shoulder straps.

Preferably, the first fixing structure is formed by folding and fixing a plurality of layers of the shoulder straps.

The utility model also discloses a backrest structure, adjust the structure including foretell safety belt.

The utility model also discloses a seat, including foretell back structure.

After adopting above-mentioned technical scheme, have following beneficial effect:

according to the shoulder strap height adjusting device, the shoulder straps can be inserted into the first fixing holes with different heights, so that the shoulder straps can be suitable for users with different heights and ages to use, when the height of the shoulder straps is adjusted, the shoulder straps only need to be moved into the different first fixing holes along the first adjusting holes, the shoulder straps do not need to be detached, and the operation is more convenient and easier; in addition, first fixed orifices slope sets up in this application, consequently can make the shoulder that is in first fixed orifices can adapt to human shoulder slope setting to make the shoulder can laminate with the shoulder, have better restraint effect.

Drawings

The disclosure of the present application will become more readily understood by reference to the drawings. It should be understood that: these drawings are for illustrative purposes only and are not intended to limit the scope of the present application. In the figure:

fig. 1 is a schematic front view of a backrest structure according to an embodiment of the present invention;

fig. 2 is a schematic back view of the backrest structure of the present invention in one embodiment;

fig. 3 is a schematic view of the backrest of the present invention in one embodiment thereof;

fig. 4 is a schematic view of the chute of the present invention in one embodiment thereof;

fig. 5 is a schematic view of the back frame of the present invention in one embodiment thereof;

fig. 6 is a schematic view of the first fixing hole and the second fixing hole of the present invention in one embodiment;

fig. 7 is a schematic view of a third fixing hole according to an embodiment of the present invention;

fig. 8 is a schematic view of the present invention in one embodiment thereof;

fig. 9 is a schematic view of a fastening structure according to an embodiment of the present invention;

fig. 10 is a schematic view of a seat according to one embodiment of the present invention.

Reference symbol comparison table:

the backrest 1: a first fixing hole 10, a first adjusting hole 11, a second fixing hole 12, a second adjusting hole 13, a communicating hole 14, a third fixing hole 15, a third adjusting hole 16, a backrest framework 17, a reinforcing plate 171, a process notch 172, a transverse reinforcing rib 173, a longitudinal reinforcing rib 174, a side plate 18 and a sliding groove 19;

safety belt 2: the shoulder strap 21, the first fixing structure 22, the fastening structure 221, the position-limiting surface 2211, the dismounting surface 2212, the fixing layer 2213, the movable layer 2214, the folding space 2215, the sliding block structure 222, the waist belt 23, the second fixing structure 24, the crotch strap 25 and the buckle structure 26;

cushion skeleton 3: a baffle 31, a stop block 32 and an opening 33.

Detailed Description

Embodiments of the present application are further described below with reference to the accompanying drawings.

It is easily understood that according to the technical solutions of the present application, those skilled in the art can substitute various structures and implementations without changing the spirit of the present application. Therefore, the following detailed description and the accompanying drawings are merely illustrative of the technical solutions of the present application, and should not be construed as limiting or restricting the technical solutions of the present application in their entirety.

The directional terms upper, lower, left, right, front, rear, front, back, top, bottom and the like that are or may be mentioned in this specification are defined relative to the configurations shown in the drawings, and are relative concepts that may be changed accordingly depending on the position and the use state of the device. Therefore, these and other directional terms should not be construed as limiting terms. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Throughout the description of the present application, it is to be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "coupled" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; the two components can be directly connected or indirectly connected through an intermediate medium, and the two components can be communicated with each other. The foregoing is to be understood as belonging to the specific meanings in the present application as appropriate to the person of ordinary skill in the art.

The utility model discloses in one of the embodiments as shown in fig. 1, a safety belt adjusting structure, including back 1 and the safety belt 2 arranged on the back, as shown in fig. 2, the safety belt 2 includes the shoulder belt 21, and the tip of the shoulder belt 21 is equipped with first fixed knot structure 22.

The backrest 1 is provided with a first fixing hole 10 arranged along the length direction of the backrest 1 and a first adjusting hole 11 arranged along the height direction of the backrest 1, and the first fixing hole 10 and the first adjusting hole 11 penetrate through the backrest 1;

as shown in fig. 3, the first fixing hole 10 is a long hole, and the first fixing hole 10 is provided near to be inclined downward in the height direction of the backrest 1 from the inner side of the backrest 1 to the outer side of the backrest 1;

the plurality of first fixing holes 10 are arranged at intervals along the height direction of the backrest 1, and the first adjusting holes 11 communicate the plurality of first fixing holes 10;

when the fixing is performed, the shoulder strap 21 passes through one of the first fixing holes 10 and the first fixing structure 22 limits the separation of the shoulder strap 21 from the backrest 1;

during adjustment, the shoulder strap 21 can move along the first adjustment hole 11 to the other first fixing holes 10.

As shown in fig. 8, the safety belt 2 is a five-point type safety belt 2, which includes two sets of shoulder straps 21, two sets of waist straps 23, a crotch strap 25, and a buckle structure 26, and thus, a set of first fixing holes 10 and a set of first adjusting holes 11 are respectively disposed on the left and right sides of the backrest 1. The buckle structure 26 is connected to the crotch strap 25, and the ends of the two shoulder straps 21 and the ends of the two waist straps 23 can be detachably connected to the buckle structure 26, so that the shoulder straps 21 and the waist straps 23 can be separated from the buckle structure 26 when a child sits on the seat to wear the seat belt 2.

Specifically, the shoulder strap 21 is a flexible strap, and the hardness of the first fixing structure 22 is greater than that of the shoulder strap 21, so that the first fixing structure 22 can be conveniently inserted into or pulled out of the first fixing hole 10, and the first fixing structure 22 can stably abut against the back surface of the backrest 1 to realize limiting. The first fixing holes 10 are adapted to the shoulder straps 21, the shoulder straps 21 can pass through the first fixing holes 10 from the front surface of the backrest 1 to the back surface of the backrest 1 and are connected with the first fixing structures 22 arranged on the back surface of the backrest 1, and the separation of the shoulder straps 21 from the backrest 1 is limited by the first fixing structures 22. As shown in fig. 1 and 3, the plurality of identical first fixing holes 10 are respectively arranged at equal intervals in the height direction of the backrest 1, that is, the plurality of first fixing holes 10 are respectively arranged in the up-down direction of the figure, the axes of the first fixing holes 10 and the first adjusting holes 11 are arranged in the front-back direction of the backrest 1, and the first adjusting holes 11 are arranged in the height direction of the backrest 1, that is, the axes of the first adjusting holes 11 are arranged in the up-down direction of the figure and the first adjusting holes 11 communicate the plurality of first fixing holes 10, so that the shoulder straps 21 can be moved into different first fixing holes 10 through the first adjusting holes 11, thereby adjusting the height of the shoulder straps 21.

Further, as shown in fig. 5, the backrest 1 includes a backrest frame 17, a reinforcing plate 171 provided in the height direction of the backrest frame 17 is provided in the middle of the backrest frame 17, and the structural strength of the backrest frame 17 can be reinforced by the reinforcing plate 171. In addition, a plurality of sets of reinforcing ribs are further arranged on the backrest frame 17 to enhance the structural strength of the backrest frame 17. Wherein, the first fixing hole 10 and the first adjusting hole 11 penetrate through the backrest frame 17.

As shown in fig. 5, a process notch 172 is formed in the outer periphery of the first adjustment hole 11, and the process notch 172 can reduce stress concentration around the first adjustment hole 11, thereby improving the structural strength of the backrest frame 17.

Still further, as shown in fig. 1, both sides of the back frame 17 are bent toward the front of the back frame 17 to form side panels 18 for restricting the left and right movement of the occupant, and as shown in fig. 4, a plurality of sets of transverse reinforcing ribs 173 arranged along the length direction of the back 1 are provided on the side panels 18 for reinforcing the structural strength of the side panels 18. A plurality of sets of longitudinal reinforcing ribs 174 are provided on the backrest frame 17 along the height direction of the backrest 1 for increasing the longitudinal structural length of the backrest frame 17.

As shown in fig. 1, the left-right direction in the drawing is the longitudinal direction of the backrest, the up-down direction in the drawing is the height direction of the backrest, and the front-back direction in the drawing is the width direction of the backrest.

Specifically, the end of the first fixing hole 10 close to the longitudinal midline of the backrest 1 is a high end, the end of the first fixing hole 10 far away from the longitudinal midline of the backrest 1 is a low end, and the shoulder belt 21 can be adapted to the shoulder of the passenger by obliquely arranging the first fixing hole 10, so that the fitting degree of the shoulder belt 21 to the shoulder of the passenger can be improved, and the use comfort is improved.

In this application, the user can adjust the height of baldric 21 according to the height of self, when adjusting the height of baldric 21, the user only need twist reverse baldric 21 and make it enter into first regulation hole 11, and pull baldric 21 and remove to the first fixed orifices 10 of co-altitude along first regulation hole 11, then twist reverse baldric 21 to fix in first fixed orifices 10 again can, baldric 21 can not separate with the back under first fixed knot constructs 22's effect this moment, thereby can realize that the height of adjustment baldric 21 uses with the user of adaptation co-altitude and age bracket. In addition, in the present application, when the shoulder strap 21 is located in the first fixing hole 10, since the first fixing hole 10 is disposed in an inclined manner, the shoulder strap 21 is also inclined, so that the shoulder strap 21 can adapt to the shape of the shoulder of the human body and can be attached to the shoulder, thereby preventing the shoulder strap 21 from falling off from the shoulder during use, and providing better constraint.

Furthermore, the shoulder straps 21 are sleeved with buffer sleeves, and the buffer sleeves can increase the contact area between the human body and the shoulder straps 21, so that the use comfort is improved. Optionally, the cushion sheath is made of sponge.

In some embodiments of the present invention, as shown in fig. 4, the first fixing structure 22 is a slider structure 222, and the slider structure 222 is slidably disposed on the back surface of the backrest 1 and can slide along the height direction of the backrest 1;

when in fixation, the sliding block structure 222 covers the first fixing hole 10, the shoulder belt 21 passes through the first fixing hole 10, and the sliding block structure 222 abuts against the back surface of the backrest 1 and limits the shoulder belt 21 to be separated from the backrest 1;

during adjustment, the slider structure 222 covers the first adjustment hole 11 and slides in the height direction of the backrest 1, and the shoulder strap 21 passes through the first adjustment hole 11 and can move along the first adjustment hole 11.

The slider structure 222 is attached to the back surface of the backrest 1 and can slide up and down along the height direction of the backrest 1, that is, the slider structure 222 and the backrest 1 are fixed relative to each other in the front-rear direction and can move relative to each other in the up-down direction. The area of the slider structure 222 is larger than the area of the first fixing hole 10 and the first adjusting hole 11, when the shoulder strap 21 is fixed, the slider structure 222 is slid to cover the first fixing hole 10, the shoulder strap 21 passes through the first fixing hole 10 at this time, and the slider structure 222 abuts against the back surface of the backrest 1, so that the shoulder strap 21 can be kept fixed in the first fixing hole 10 and cannot be separated from the backrest 1, thereby playing a role of restraint. When the height of the shoulder strap 21 needs to be adjusted, the user can twist the shoulder strap 21 and make the shoulder strap 21 enter the first adjusting hole 11, and by pulling the shoulder strap 21, the shoulder strap 21 can move along the first adjusting hole 11 to the first fixing hole 10 with different height, and at the same time, the slider structure 222 can also move up and down along the height direction of the backrest 1 along with the end of the shoulder strap 21.

In some embodiments of the present invention, as shown in fig. 4, the back surface of the backrest 1 is provided with a sliding groove 19 corresponding to the positions of the first fixing hole 10 and the first adjusting hole 11, and the sliding block structure 222 is slidably disposed in the sliding groove 19.

Wherein, the sliding groove 19 is arranged along the height direction of the backrest 1, and the sliding groove 19 is arranged at the periphery of the first fixing hole 10 and the first adjusting hole 11, so that the sliding block structure 222 can slide along the height direction of the backrest 1 through the sliding groove 19, and the sliding block structure 222 can be limited to move along the front-back direction, thereby preventing the shoulder belt 21 from separating from the backrest 1.

In some embodiments of the present invention, as shown in fig. 3, the first adjusting hole 11 is disposed along the height direction of the backrest 1, and the first adjusting hole 11 communicates with the middle portion of the first fixing hole 10.

Wherein, the first adjusting hole 11 communicates with the middle portion of the first fixing hole 10 so that the shoulder strap 21 can be more easily rotated to the first adjusting hole 11.

Further, when the shoulder strap 21 is fixed, the shoulder strap 21 is positioned in one of the first fixing holes 10, and the shoulder strap 21 is approximately parallel to the surface of the backrest 1, so that the contact area of the shoulder strap 21 and the human body can be larger, and the comfort and the safety when the user wears the backrest are improved. When the height of the shoulder strap 21 needs to be adjusted, because the shoulder strap 21 is a flexible strap, the user can rotate the shoulder strap 21 to be approximately perpendicular to the backrest 1, and at this time, the shoulder strap 21 can enter the first adjusting hole 11 and move the shoulder strap 21 to the first fixing holes 10 with different heights through the first adjusting hole 11, so as to satisfy the use of children with different ages or heights. Simultaneously, a plurality of first fixed orificess 10 communicate through first regulation hole 11 in this application, therefore when adjusting the height of baldric 21, the user need not to tear shoulder 21 out, only need with shoulder 21 along first regulation hole 11 remove to different first fixed orifices 10 in can, it is more convenient to use the regulation.

Alternatively, the first regulation hole 11 can also communicate with the end of the first fixing hole 10.

Optionally, one first adjusting hole 11 is disposed in two adjacent first fixing holes 10, and two adjacent first adjusting holes 11 are disposed in a staggered manner, that is, two adjacent first adjusting holes 11 are not in the same straight line.

In some embodiments of the present invention, as shown in fig. 6, the backrest 1 is further provided with a second fixing hole 12 and a second adjusting hole 13, the second fixing holes 12 are disposed along the height direction of the backrest 1 at intervals, the second adjusting hole 13 communicates with the second fixing holes 12, and the second fixing hole 12 is disposed on one side of the first fixing hole 10.

Specifically, as shown in fig. 6, the first fixing hole 10 and the second fixing hole 12 have the same shape and size, and the first fixing hole 10 and the second fixing hole 12 are parallel, and correspondingly, the first adjusting hole 11 and the second adjusting hole 13 have the same shape and size and are parallel to each other. The first fixing hole 10 and the second fixing hole 12 are respectively located at different length positions of the backrest 1, when the distance between the two shoulder straps 21 needs to be adjusted, a user can detach the shoulder straps 21 from the first fixing hole 10 and load the shoulder straps 21 into the second fixing hole 12, so that the distance between the two shoulder straps 21 can be adjusted to meet the requirements of passengers with different shoulder widths.

Similarly, shoulder belt 21 can move to the second fixed orifices 12 of different heights along second regulation hole 13 to realize adjusting the height of shoulder belt 21, through setting up first fixed orifices 10 and second fixed orifices 12, can realize the interval control of shoulder belt 21 and the altitude mixture control of shoulder belt 21 simultaneously, thereby can satisfy the person of taking of different demands and use.

Alternatively, the second fixing holes 12 and the second adjusting holes 13 may be provided in plural sets, thereby making the adjustment range of the distance between the shoulder straps 21 wider.

In some embodiments of the present invention, as shown in fig. 6, a communication hole 14 is provided between the first adjusting hole 11 and the second adjusting hole 13, and the communication hole 14 communicates the first adjusting hole 11 and the second adjusting hole 13.

Further, the first fixing holes 10 and the second fixing holes 12 correspond in position and number in the transverse direction, at least two first fixing holes 10 and at least two second fixing holes 12 are provided, the communication between the first adjusting holes 11 and the second adjusting holes 13 can be realized by providing the communication holes 14, when the distance between the two shoulder straps 21 needs to be adjusted, a user can move the shoulder straps 21 along the communication holes 14 to the first adjusting holes 11 or the second adjusting holes 13, and then move the shoulder straps 21 to the first fixing holes 10 or the second fixing holes 12. Through setting up intercommunicating pore 14 can realize need not to dismantle shoulder belt 21 when adjusting the interval of shoulder belt 21 and reinstall, the installation is convenient simple.

Still further, as shown in fig. 6, at least one communication hole 14 is provided between adjacent two first fixing holes 10, and the communication hole 14 communicates the first regulation hole 11 and the second regulation hole 13.

By arranging at least one communication hole 14 between the two first fixing holes 10, when the distance between the shoulder straps 21 only needs to be adjusted, a user only needs to move the shoulder straps 21 into the first adjusting holes 11 or the second adjusting holes 13 and then move the shoulder straps 21 along the communication holes 14 to adjust the positions, and then moves the shoulder straps 21 into the first fixing holes 10 or the second fixing holes 12 which are at the same height before adjustment, so that the adjustment is more convenient.

Alternatively, only one communication hole 14 may be provided.

In some embodiments of the present invention, the first fixing structure 22 is a fastening structure 221 connected to the shoulder strap 21 and extending to the back of the backrest 1;

when fixed, the fastener 221 abuts against the back surface of the backrest 1 and restricts the shoulder straps 21 from separating from the backrest 1.

The occupant is restrained on the front side of the backrest 1 by the shoulder straps 21, the waist belt 23 and the crotch strap 25, and when the occupant moves forward under the inertia, the shoulder straps 21 are driven to move forward, and at this time, the buckling structure 221 abuts against the back side of the backrest 1, so that the shoulder straps 21 cannot move forward further, and the forward movement of the occupant can be limited.

In some embodiments of the present invention, as shown in fig. 9, the fastening structure 221 includes a limiting surface 2211 and a detaching surface 2212, the area of the limiting surface 2211 is larger than the area of the first fixing hole 10, and the area of the detaching surface 2212 is smaller than the area of the first fixing hole 10;

the shoulder strap 21 is connected with the limiting surface 2211, and the clamping structure 221 can move relative to the shoulder strap 21;

when the fixing is performed, the fastening structure 221 rotates until the limiting surface 2211 faces the first fixing hole 10, and the limiting surface 2211 abuts against the backrest 1 and limits the shoulder belt 21 from separating from the backrest 1;

when detaching, the fastening structure 221 rotates until the detaching surface 2212 faces the first fixing hole 10 so that the fastening structure 221 can pass through the first fixing hole 10 and be separated from the backrest 1.

Further, the fastening structure 221 is a plate-shaped structure, wherein the shoulder strap 21 is a flexible strap, so that the fastening structure 221 can rotate to adjust the position thereof. When the shoulder strap 21 is fixed, the fastening structure 221 rotates until the limit surface 2211 faces the back of the backrest 1, and when the shoulder strap 21 is pulled forward by an external force, the limit surface 2211 of the fastening structure 221 abuts against the back of the backrest 1 to limit the separation of the shoulder strap 21 from the backrest 1. When the fastening structure 221 needs to be removed, the fastening structure 221 is rotated to make the removing surface 2212 face the back of the backrest 1, and the fastening structure 221 is adjusted to make the fastening structure 221 align with the first fixing hole 10, at this time, the fastening structure 221 can penetrate through the first fixing hole 10, so that the shoulder strap 21 is separated from the backrest 1.

Alternatively, the fastening structure 221 may be a hard plate, and the shoulder strap 21 is connected to the hard plate, and when the fastening structure is fastened, the hard plate abuts against the back surface of the backrest 1 so as to limit the separation of the shoulder strap 21 from the backrest 1.

In some alternative embodiments of the present invention, the first securing structure is formed by a knot tied in the shoulder strap.

In some embodiments of the present invention, the shoulder strap 21 is provided with a length adjusting buckle for adjusting the length of the shoulder strap 21. The length of the shoulder belt 21 can be adjusted by adjusting the buckle of the shoulder belt 21, so that the use of passengers with different requirements can be met.

Alternatively, the first fixing structure 22 may also be a retractor provided on the back surface of the backrest 1, in which the shoulder belt 21 is wound, and the shoulder belt 21 may be pulled out when it is necessary to wear the seat belt 2, and the retractor may restrict the shoulder belt 21 from being pulled out to restrict the occupant from continuing to move forward when the occupant suddenly inertially moves forward.

In some embodiments of the present invention, as shown in fig. 9, the fastening structure 221 is formed by folding and fastening the multi-layered shoulder strap 21.

Specifically, after one end of the shoulder strap 21 extending out of the back surface of the backrest 1 is folded, the adjacent shoulder straps 21 can be fixedly connected together by sewing or gluing, and the folded multi-layer shoulder strap 21 is not easy to deform and has larger volume, so that the shoulder strap 21 can be prevented from being separated from the backrest 1.

In some embodiments of the present invention, as shown in fig. 8, the fastening structure 221 includes a fixed layer 2213 and a movable layer 2214, the fixed layer 2213 is connected to the movable layer 2214, the movable layer 2214 is connected to the shoulder strap 21, and the movable layer 2214 has a folding space 2215;

when the backrest is disassembled, the fastening structure 221 rotates until the portion of the shoulder strap 21 on the back of the backrest 1 is received in the folding space 2215, so that the shoulder strap 21 is flush with the movable layer 2214, the cross section of the shoulder strap 21 and the side surface of the fixed layer 2213 form a limiting surface 2211, and the fastening structure 221 is rotated until the limiting surface 2211 faces the first fixing hole 10, so that the fastening structure 221 can pass through the first fixing hole 10 and be separated from the backrest 1.

Preferably, the fixing layer 2213 includes at least two shoulder straps 21, so that the fixing layer 2213 is not easily deformed, and the fastening structure 221 can be firmly abutted against the back of the backrest 1. The shoulder strap 21 is folded over to the surface of the fixed layer 2213 to form the active layer 2214. When fixed, the catching structure 221 rotates to be perpendicular to a portion of the shoulder strap 21 passing through the first fixing hole 10 and causes the catching structure 221 to cover the first fixing hole 10 and abut against the back surface of the backrest 1, thereby restricting the shoulder strap 21 from being separated from the backrest 1. When the shoulder strap 21 needs to be detached, the fastening structure 221 is rotated 90 ° so that the portion of the shoulder strap 21 on the back side of the backrest 1 rotates into the folding space 2215, at this time, the shoulder strap 21 is flush with the movable layer 2214 and just rotates until the limiting surface 2211 faces the first fixing hole 10, the fastening structure 221 can be pulled out from the first fixing hole 10 by pulling out the shoulder strap 21, and thus the shoulder strap 21 and the backrest 1 are separated.

In some embodiments of the present invention, as shown in fig. 2 and 8, the safety belt 2 further includes a belt 23, the end of the belt 23 is provided with a second fixing structure 24, the backrest 1 is further provided with a third fixing hole 15 and a third adjusting hole 16, and the belt 23 passes through the third fixing hole 15 or the third adjusting hole 16;

a plurality of third fixing holes 15 are arranged at intervals along the length direction of the backrest 1, and a third adjusting hole 16 is communicated with the plurality of third fixing holes 15;

when the fixing is performed, the waist belt 23 passes through one of the third fixing holes 15 and limits the separation of the waist belt 23 from the backrest 1 through the second fixing structure 24;

during adjustment, the waist belt 23 can move along the third adjustment hole 16 to the other third fixing holes 15.

The distance between the two waist belts 23 can be adjusted by arranging a plurality of third fixing holes 15 so as to meet the use requirements of different users. And the waistband 23 does not need to be detached and reinstalled when the waistband 23 is adjusted through the third adjusting hole 16, and the waistband 23 only needs to be moved to different third fixing holes 15 along the third adjusting hole 16, so that the adjustment is convenient and quick.

The second fixing structure 24 is the same as the first fixing structure 22 in structure, and is a fastening structure 221.

As a preferred embodiment of the present invention, as shown in fig. 1, the backrest structure includes a backrest 1 and a safety belt 2, wherein the safety belt 2 is a five-point safety belt 2, as shown in fig. 7, the safety belt 2 includes two sets of shoulder straps 21, two sets of waist belts 23, a crotch strap 25 and a buckle structure 26, the buckle structure 26 is fixedly connected to the crotch strap 25, one end of the shoulder strap 21 is connected to the backrest 1, the other end is detachably connected to the buckle structure 26, one end of the waist belt 23 is connected to the backrest 1, and the other end is detachably connected to the buckle structure 26.

As shown in fig. 1 to 3, a set of first fixing holes 10 and a set of first adjusting holes 11 are respectively disposed on the left side and the right side of the backrest 1, the first fixing holes 10 are disposed at intervals along the height direction of the backrest 1, the first fixing holes 10 are long holes, and one end of the first fixing hole 10 close to the longitudinal centerline of the backrest 1 is located above one end of the first fixing hole 10 away from the longitudinal centerline of the backrest 1, so that the first fixing hole 10 is inclined downward from inside to outside. The first regulation hole 11 communicates the plurality of first fixing holes 10.

The end of the shoulder strap 21 penetrates out of the first fixing hole 10 or the first adjusting hole 11 to the back of the backrest 1, and a first fixing structure 22 is arranged on the back of the backrest 1, wherein the first fixing structure 22 is a clamping structure 221, and the clamping structure 221 is a clamping structure 221 formed by folding multiple layers of shoulder straps 21. The clamping structure 221 includes a limiting surface 2211 and a detaching surface 2212, the area of the limiting surface 2211 is larger than the area of the first fixing hole 10, and the area of the detaching surface 2212 is smaller than the area of the first fixing hole 10, so that when the limiting surface 2211 faces the back of the backrest 1, the limiting surface 2211 can cover the first fixing hole 10 and the clamping structure 221 cannot penetrate through the first fixing hole 10, and the shoulder strap 21 and the backrest 1 cannot be separated. When the dismounting surface 2212 faces the first fixing hole 10, the fastening structure 221 can pass through the first fixing hole 10, so that the shoulder belt 21 can be separated from the backrest 1.

In this application, shoulder area 21 can be fixed in the first fixed orifices 10 of co-altitude position to satisfy the user of different age brackets or height and use, when the adjustment shoulder area 21 height, the user need not to dismantle the separation with shoulder area 21 and back 1, only need with shoulder area 21 along first regulation hole 11 remove to co-altitude first fixed orifices 10 in can, adjust convenient simple.

The utility model also discloses a seat, as shown in fig. 10, including foretell back structure.

Further, the seat still includes cushion skeleton 3, thereby is connected through revolution mechanic between the lower extreme of back 1 and the cushion skeleton 3 and makes back 1 can rotate for cushion skeleton 3 to the effect at the inclination of realization adjustment back 1.

The seat cushion frame 3 is provided with baffles 31 on both left and right sides thereof to restrict the right and left movement of the occupant. A stopper 32 is provided at the front end of the seat cushion frame 3, an opening 33 is provided between the stopper 32 and the side flaps 31 to allow the legs of the occupant to protrude, and the stopper 32 can restrict the occupant from coming out of the seat. One end of the crotch strap 25 is connected with the cushion frame 3, and the other end is connected with the buckle structure 26.

Wherein, this seat can regard as children's dining chair to use, also can regard as children's safety seat to use.

The foregoing is considered as illustrative only of the principles and preferred embodiments of the application. It should be noted that, for a person skilled in the art, several other modifications can be made on the basis of the principle of the present application, and these should also be considered as the scope of protection of the present application.

Claims

1. A safety belt adjusting structure comprises a backrest (1) and a safety belt (2) arranged on the backrest (1), wherein the safety belt (2) comprises a shoulder belt (21), a first fixing structure (22) is arranged at the end part of the shoulder belt (21),

the backrest (1) is provided with a first fixing hole (10) arranged along the length direction of the backrest (1) and a first adjusting hole (11) arranged along the height direction of the backrest (1), and the first fixing hole (10) and the first adjusting hole (11) penetrate through the backrest (1);

the first fixing hole (10) is a long hole, and the first fixing hole (10) is arranged in a manner of inclining downwards along the height direction of the backrest (1) from the inner side of the backrest (1) to the outer side of the backrest (1);

the first fixing holes (10) are arranged at intervals along the height direction of the backrest (1), and the first adjusting holes (11) are communicated with the first fixing holes (10);

when fixed, the shoulder strap (21) passes through one of the first fixing holes (10) and limits the separation of the shoulder strap (21) and the backrest (1) through the first fixing structure (22);

when adjusting, the shoulder belt (21) can move to other first fixing holes (10) along the first adjusting hole (11).

2. The seat belt adjusting structure according to claim 1, characterized in that the first fixing structure (22) is a slider structure (222), and the slider structure (222) is slidably disposed on the back surface of the backrest (1) and is slidable in the height direction of the backrest (1);

when in fixation, the slide block structure (222) covers the first fixing hole (10), the shoulder strap (21) passes through the first fixing hole (10), and the slide block structure (222) abuts against the back surface of the backrest (1) and limits the separation of the shoulder strap (21) and the backrest (1);

during adjustment, the sliding block structure (222) covers the first adjusting hole (11) and slides along the height direction of the backrest (1), and the shoulder belt (21) penetrates through the first adjusting hole (11) and can move along the first adjusting hole (11).

3. The seat belt adjusting structure according to claim 2, characterized in that a sliding groove (19) corresponding to the positions of the first fixing hole (10) and the first adjusting hole (11) is formed in the back surface of the backrest (1), and the slider structure (222) is slidably disposed in the sliding groove (19).

4. The seat belt adjusting structure according to claim 1, wherein a second fixing hole (12) and a second adjusting hole (13) are further formed in the backrest (1), a plurality of the second fixing holes (12) are arranged at intervals in a height direction of the backrest (1), the second adjusting hole (13) communicates with the plurality of the second fixing holes (12), and the second fixing hole (12) is formed in one side of the first fixing hole (10).

5. The seatbelt adjustment structure according to claim 4, characterized in that a communication hole (14) is provided between the first adjustment hole (11) and the second adjustment hole (13), the communication hole (14) communicating the first adjustment hole (11) and the second adjustment hole (13).

6. The seat belt adjusting structure according to claim 1, wherein the first fixing structure (22) is a fastening structure (221) connected with one end of the shoulder belt (21) penetrating out to the back of the backrest (1);

when the backrest is fixed, the clamping structure (221) is abutted against the back face of the backrest (1) and limits the shoulder belt (21) from being separated from the backrest (1).

7. The harness adjustment structure according to any one of claims 1-6, characterized in that the first securing structure (22) is formed by a knot tying the shoulder strap (21).

8. The seat belt adjusting structure according to any one of claims 1 to 6, wherein the first fixing structure (22) is formed by folding and fixing a plurality of layers of the shoulder belt (21).

9. A backrest structure characterized by comprising the seatbelt adjustment structure according to any one of claims 1 to 8.

10. A seat comprising the back rest structure of claim 9.