Patent Description:
Existing children's products such as children's sitting saddles, children's strollers and other children's products are provided with a child seat device; the child seat device has a seat, a backrest, and a seat belt assembly to restrain the child in the seat device; the seat belt assembly includes a crotch strap and a shoulder strap, the crotch strap is connected to the seat, and the shoulder strap is connected to the backrest. Examples of such products are described in documents <CIT>, <CIT>, <CIT> and <CIT>.

Usually, in order to meet the different needs of children's sitting posture changes, such as sitting at different leaning angles and lying posture changes, the backrest is usually adjustable in angle relative to the seat.

However, after the angle of the backrest relative to the seat is adjusted, such as changed from the sitting-posture state to the lying-posture state, a distance between the position of the shoulder strap connected to the backrest and the position of the crotch strap connected to the seat becomes longer, resulting in the seat belt being taut, causing the child's body to be bound very tight and causing uncomfortable sitting. At present, this problem is mainly solved by adjusting the length of the crotch strap or shoulder strap, but this leads to that the user needs to adjust the length of the seat belt in every adjustment of the angle of the backrest, causing the inconvenience of use.

The purpose of the present disclosure is to overcome the defects of the prior art and provide a new child seat device.

To achieve the above purpose, a technical solution employed by the present invention is: a child seat device comprises a backrest, a seat and a tether system, the backrest is rotatably connected to the seat, the seat device has a sitting side and a back side, the tether system comprises a shoulder strap and a crotch strap, the shoulder strap is arranged on the backrest, the crotch strap has a connecting end and a fixed end, the connecting end and the fixed end are respectively arranged on two opposite end portions of the length extension direction of the crotch strap, the portion of the crotch strap on the sitting side is a first strap segment, the connecting end is located on the first strap segment and can be detachably connected to one end of the shoulder strap, the fixed end is fixedly connected to the back side of the seat device, the seat device has a sitting-posture state and a lying-posture state, the length of the first strap segment in the sitting-posture state is shorter than the length of the first strap segment in the lying-posture state, and during the transition process of the seat device from the sitting-posture state to the lying-posture state, the length of the first strap segment gradually becomes longer.

Preferably, the crotch strap passes through the seat in a manner of being able to slide in its own length direction, and during the transition process of the seat device between the sitting-posture state and the lying-posture state, the sliding of the crotch strap relative to the seat causes the length of the first strap segment to change.

Further, the crotch strap further has a second strap segment on the back side, the fixed end is located on the second strap segment, the second strap segment and the first strap segment are connected in the length direction, and the longer the first strap segment, the shorter the second strap segment.

Preferably, the fixed end is fixedly connected to the backrest.

In one specific embodiment, the backrest has an anchoring element, the fixed end is fixedly connected to the anchoring element, and the anchoring element and the rotation centerline of the backrest relative to the seat are spaced in the height direction of the backrest.

In one specific embodiment, the anchoring element is located on the backrest above the rotation centerline of the backrest relative to the seat.

In one specific embodiment, a lower portion of the backrest is connected to a rear portion of the seat through a soft component, or, a lower portion of the backrest is rotatably connected to a rear portion of the seat through a rotation shaft, and the rotation centerline between the seat and the backrest extends in a left-right direction.

Preferably, the shoulder strap slides through the backrest, the tether system further comprises an adjustment strap, the adjustment strap is fixedly arranged on the shoulder strap, the adjustment strap has a connection position in front of the seat, and an adjustment segment between the connection position and the shoulder strap, and the seat is provided with a strap adjustment mechanism for adjusting the length of the adjustment segment.

In one specific embodiment, the strap adjustment mechanism is a one-way lock mechanism or an automatic winding mechanism.

In one specific embodiment, the adjustment segment is located on the back side, the adjustment strap is slidably connected to a front portion of the seat, and the adjustment strap has an extension segment extending to the sitting side.

In one specific embodiment, the position where the crotch strap is arranged on the seat is behind the connection position between the adjustment strap and the seat in the length extension direction of the seat.

In one specific embodiment, the shoulder strap comprises a left shoulder strap and a right shoulder strap, the left shoulder strap and the right shoulder strap respectively slide through the backrest, each of the left shoulder strap and the right shoulder strap has a first end portion and a second end portion arranged at two opposite ends of its own length direction, the first end portions can be detachably connected to the connecting end of the crotch strap, and the two second end portions are fixedly arranged on the adjustment strap.

As another preferred way, one end portion of the shoulder strap is fixedly arranged on the backrest, and the other end portion of the shoulder strap is detachably connected to the connecting end of the crotch strap.

Another purpose of the present invention is to provide a child product having the above-mentioned child seat device.

To achieve the above purpose, a technical solution employed by the present invention is: a child product comprises the above-mentioned child seat device.

Preferably, the child product is a child stroller or a child sitting saddle.

Due to the use of the above technical solutions, the present invention has the following advantages over the prior art: In the child seat device and the child product having the child seat device of the present invention, when a child sits in this seat device, and when adjusting the angle between the backrest and the seat to meet the needs of the child in different sitting or lying postures, the tether system can be adjusted with the rotation of the backrest and automatically compensate for the total length of a safety belt on the front side of the child body when the backrest angle is increased, such that the child is not bound too tightly; when the backrest angle is decreased, the total length of the safety belt on the front side of the child body is automatically reduced so as to ensure that the tether system binds the child firmly.

wherein, <NUM>, backrest; <NUM>, anchoring element; <NUM>, seat; <NUM>, one-way lock mechanism; <NUM>, tether system; <NUM>, shoulder strap; 31a, first end portion; 31b, second end portion; <NUM>, adjustment strap; 311a, adjustment segment; 311b, extension segment; <NUM>, left shoulder strap; <NUM>, right shoulder strap; <NUM>, crotch strap; <NUM>, connecting end; <NUM>, fixed end; 32a, first strap segment; 32b, second strap segment; <NUM>, waist strap; <NUM>, buckle assembly; <NUM>, rotation shaft.

The technical solution of the present invention is further described below combining with the accompanying drawings and specific embodiments.

For the convenience of description, the following descriptions of up and down, front and rear, left and right directions are defined based on the direction observed by a child sitting on the seat device.

A child seat device is shown in <FIG>, here is specifically a child sitting saddle, which comprises a backrest <NUM>, a seat <NUM> and a tether system <NUM>, and the angle between the backrest <NUM> and the seat <NUM> can be adjusted. Here, a lower portion of the backrest <NUM> is rotatably connected to a rear portion of the seat <NUM> by a rotation shaft <NUM>, the axial line of the rotation shaft <NUM> extends in a left-right direction, that is, the rotation centerline of the backrest <NUM> relative to the seat <NUM> extends in the left-right direction; a lock mechanism is further arranged between the seat <NUM> and the backrest <NUM> to lock the backrest <NUM> and the seat <NUM> at different angle positions, so that the backrest <NUM> has different usage angels relative to the seat <NUM>. In other embodiments, the lower portion of the backrest <NUM> may be connected to the rear portion of the seat <NUM> through a soft connecting member, and another mechanism is used to restrict the angle of the backrest <NUM>, so that the angle stabilizes at the adjusted angle position. The seat device has a sitting side and a back side, the sitting side and the back side are separated by the backrest <NUM> and the seat <NUM>, that is, the side on which a child sits when the child is riding is the sitting side, in front of backrest <NUM> and above the seat <NUM> are the sitting side, while below the seat <NUM> and behind the backrest <NUM> are the back side.

The tether system <NUM> comprises a shoulder strap <NUM> and a crotch strap <NUM>, the crotch strap <NUM> has a connecting end <NUM> and a fixed end <NUM> respectively arranged on two opposite end portions of its own length extension direction, the crotch strap <NUM> passes through the seat <NUM> in a manner of being able to slide in its own length direction, the connecting end <NUM> is located on the sitting side, and is detachably connected with one end portion of the shoulder strap <NUM> through a buckle assembly <NUM>, and the fixed end <NUM> is fixedly connected to the backrest <NUM>.

Specifically, the fixed end <NUM> is located on the back side, and is fixed on the back of the backrest <NUM>. Here, the back of the backrest <NUM> is fixedly provided with an anchoring element <NUM>, the fixed end <NUM> is fixedly connected to the anchoring element <NUM>, to form an anchoring point on the backrest <NUM>. The position of the anchoring point on the backrest <NUM> is above the rotation centerline of the backrest <NUM> relative to the seat <NUM>, and the aforementioned anchoring point and the rotation centerline of the backrest <NUM> relative to the seat <NUM> are spaced in the height direction of the backrest <NUM>.

In this way, the crotch strap <NUM> has a first strap segment 32a and a second strap segment 32b that are connected in the length direction, the first strap segment 32a is on the sitting side, the second strap segment 32b is located on the back side, the connecting end <NUM> is located at the outer end of the first strap segment 32a, and the fixed end <NUM> is located at the outer end of the second strap segment 32b. It should be noted that the length of crotch strap <NUM> is constant, which is equal to the sum of the length of the first strap segment 32a and the length of the second strap segment 32b. The first strap segment 32a and the second strap segment 32b are not of a fixed length, but can vary in length according to the rotation angle of the backrest <NUM>. When the crotch strap <NUM> slides relative to the seat <NUM>, the length of the first strap segment 32a and the length of the second strap segment 32b change inversely. In this embodiment, the shoulder strap <NUM> slides through the backrest <NUM>. The tether system <NUM> further comprises an adjustment strap <NUM>, the adjustment strap <NUM> is fixedly arranged on the shoulder strap <NUM>, the adjustment strap <NUM> has a connection position in front of the seat <NUM>, a strap adjustment mechanism is arranged at the connection position, the part of the adjustment strap <NUM> between the aforementioned connection position and the shoulder strap <NUM> is an adjustment segment 311a, and the strap adjustment mechanism is used for adjusting the length of the adjustment segment 311a.

The adjustment segment 311a is located on the back side of the seat device, the adjustment strap <NUM> further has an extension segment 311b extending to the sitting side, and by operating the extension segment 311b, the strap adjustment mechanism can adjust the length of the adjustment segment 311a.

Specifically , the shoulder strap <NUM> comprises a left shoulder strap <NUM> and a right shoulder strap <NUM>, the left shoulder strap <NUM> and the right shoulder strap <NUM> respectively slide through the backrest <NUM>, each of the left shoulder strap <NUM> and the right shoulder strap <NUM> has a first end portion 31a and a second end portion 31b arranged at two opposite ends of its own length direction, and the two first end portions 31a are detachably connected to the connecting end <NUM> of the crotch strap <NUM> through the buckle assembly <NUM>.

One end portion of the adjustment strap <NUM> is fixed on the two second end portions 31b, and the other end is connected to the front of the seat <NUM> by bypassing the backrest <NUM> and the bottom of the seat <NUM>, and then passes through the strap adjustment mechanism and penetrates above the seat <NUM>, and the part of the adjustment strap <NUM> located above the seat <NUM> forms the extension segment 311b.

The strap adjustment mechanism can adopt a one-way lock mechanism or an automatic winding mechanism, here, a one-way lock mechanism <NUM> is used, which has a one-way locking element with a ratchet structure, so that the adjustment strap <NUM> can only be locked and pulled in a single direction, specifically here, when keeping the one-way lock mechanism <NUM> locked, the user can lengthen the adjustment segment 311a by pulling the shoulder strap <NUM>; when it is necessary to shorten the adjustment segment 311a, the user can unlock the one-way locking element, and then pull the extension segment 311b forward to make the adjustment strap <NUM> slide and shorten the adjustment segment 311a.

The position where the crotch strap <NUM> is arranged on the seat <NUM> is behind the connection position between the adjustment strap <NUM> and the seat <NUM> in the front-rear length extension direction of the seat <NUM>, specifically, the seat <NUM> is provided with a through hole that runs through the thickness direction, the crotch strap <NUM> slides through the through hole along its own length direction, and the one-way lock mechanism <NUM> is arranged in front of the through hole on the seat <NUM>.

Thus, when the child seat device is in a sitting-posture state, as shown in <FIG> and <FIG>, the backrest <NUM> is in an upright state; when the child seat device is switched to a lying- posture state, as shown in <FIG> and <FIG>, the backrest <NUM> is rotated backwards relative to the seat <NUM>, and the angle between the backrest <NUM> and the seat <NUM> increases, here, the angle between the backrest <NUM> and the seat <NUM> is viewed from the sitting side of the seat device, specifically referring to the angle between the leaning surface of the backrest <NUM> for a child to lean on and the sitting surface of the seat <NUM> for a child to sit on. It can be seen that the length of the crotch strap <NUM> wound between the through hole on the seat <NUM> and the fixed end <NUM> is shortened, resulting in a shorter length of the crotch strap <NUM> on the back side and a longer length of the crotch strap <NUM> on the sitting side of the seat <NUM>, in other words, the larger the angle between the backrest <NUM> and the seat <NUM>, the shorter the second strap segment 32b, and accordingly the longer the first strap segment 32a, which compensates for the total length of the crotch strap <NUM> and the shoulder strap <NUM> on the front side of a child body, so as not to be taut on the child's body.

At the same time, through the one-way lock mechanism <NUM>, the user can further release the adjustment strap <NUM>, resulting in a longer length of the adjustment segment 311a of the adjustment strap <NUM>, so that both the left shoulder strap <NUM> and the right shoulder strap <NUM> can be partially released to the front of the child body, further compensating for the total length of the crotch strap <NUM> and shoulder strap <NUM> located on the front of the child body, further avoiding the tether system <NUM> from binding the child too tightly.

When the child seat device is switched from a lying-posture state to a sitting-posture state, the angle of the backrest <NUM> relative to the seat <NUM> decreases, and during the rotation of the backrest <NUM> towards the seat <NUM>, the fixed end <NUM> is pulled up, causing the crotch strap <NUM> to be pulled towards the back side, reducing the length of the crotch strap <NUM> and the shoulder strap <NUM> located on the front of the child body, making the child firmly bound to the child seat device.

Of course, when the backrest <NUM> needs to be adjusted between different sitting-posture states, the angle change of the backrest <NUM> will cause the crotch strap <NUM> to slide along its own length direction and correspondingly adjust the length on the sitting side or back side of the seat <NUM>, compensating for the total length of the crotch strap <NUM> and the shoulder strap <NUM> located on the front side of the child body, avoiding the tether system <NUM> from binding the child too tightly.

In this embodiment, the tether system <NUM> adopts a five-point safety strap, which further comprises two waist straps <NUM> connected to the left and right sides of the lower portion of the backrest <NUM>, the end portions of the waist straps <NUM> are detachably connected to the crotch strap <NUM> and shoulder strap <NUM> through the buckle assembly <NUM> to achieve stable binding of the child.

As shown in <FIG>, this embodiment mainly differs from Embodiment <NUM> by the arrangement of the tether system <NUM>, and in this embodiment, the tether system <NUM> does not comprise the two waist straps <NUM> in Embodiment <NUM>, and the other arrangements are basically the same, which will not be repeated here.

As shown in <FIG>, this embodiment mainly differs from Embodiment <NUM> by that the arrangement of the adjustment strap <NUM> is missing in this embodiment. In this embodiment, the upper end portions of the left shoulder strap <NUM> and the right shoulder strap <NUM> are fixed on the backrest <NUM>, and the lower end portions are detachably connected to the crotch strap <NUM> through the buckle assembly <NUM>. Correspondingly, when the backrest <NUM> rotates relative to the seat <NUM> to achieve angle adjustment, compensation is only achieved by relying on the sliding of the crotch strap <NUM> along its own length direction to avoid the tether system from binding the child too tightly.

Claim 1:
A child seat device comprising a backrest (<NUM>), a seat (<NUM>) and a tether system (<NUM>), the backrest (<NUM>) being rotatably connected to the seat (<NUM>), the seat device having a sitting side and a back side, wherein the tether system (<NUM>) comprises a shoulder strap (<NUM>) and a crotch strap (<NUM>), the shoulder strap (<NUM>) is arranged on the backrest (<NUM>), the crotch strap (<NUM>) has a connecting end (<NUM>) and a fixed end (<NUM>), the connecting end (<NUM>) and the fixed end (<NUM>) are respectively arranged on two opposite end portions of the length extension direction of the crotch strap (<NUM>), the portion of the crotch strap (<NUM>) on the sitting side is a first strap segment (32a), the connecting end (<NUM>) is located on the first strap segment (32a) and can be detachably connected to one end of the shoulder strap (<NUM>), the fixed end (<NUM>) is fixedly connected to the back side of the seat device, the seat device has a sitting-posture state and a lying-posture state,
characterized in that
the length of the first strap segment (32a) in the sitting-posture state is shorter than the length of the first strap segment (32a) in the lying-posture state, and during the transition process of the seat device from the sitting-posture state to the lying-posture state, the length of the first strap segment (32a) gradually becomes longer.