GB2579255A

GB2579255A - Tether structure for safety seat

Info

Publication number: GB2579255A
Application number: GB1902483.5A
Authority: GB
Inventors: Huang Qunsheng
Original assignee: Transtek Industries Hk Ltd
Current assignee: Transtek Industries Hk Ltd
Priority date: 2018-11-27
Filing date: 2019-02-25
Publication date: 2020-06-17
Also published as: FR3088875B3; ES1226799Y; PT11856U; ES1226799U; CN209079854U; FR3088875A3; GB201902483D0

Abstract

A safety seat tether structure has a hook 1, an adjustment buckle 2 and a first long tether 4, wherein the hook 1 is fixed at one end of the first long tether 4, the first long tether 4 penetrates through the adjustment buckle 2, the adjustment buckle 2 locks one end of the first long tether 4 with the hook 1 after adjusting its length, a short tether 5 is fixed on the adjustment buckle 2, an adjuster 3 is fixed at one end of the short tether 5, a second long tether 6 penetrates through the adjuster 3, one end of the second long tether 6 is fixedly connected with the safety seat, and the adjuster 3 locks one end of the second long tether 6 connected with the safety seat after adjusting its length. The tether structure is used with a child safety lock on a seat back or cushion. Further features may include an arc shaped elastic piece 11 fixed to one end of the hook 1, and the first and second long tether 6 may have a loop strap and hook strap 7 & 8 which are adhered to each other to form a collar.

Description

Tether Structure for Safety Seat

FIELD OF THE INVENTION

The utility model relates to the technical field of safety belt structures, and in particular to a tether structure for a safety seat.

BACKGROUND OF THE INVENTION

A tether structure for a safety seat in the prior art (as shown in Fig. 1) comprises a short tether 200 (with unadjustable length), a long tether 400, a ladder buckle 300 and a hook 100, wherein one end of the ladder buckle is fixedly connected with the hook by the short tether, the long tether penetrates through the ladder buckle, the ladder buckle locks the long tether after adjusting its length, and one end of the long tether is fixedly connected with the safety seat. Accordingly, when this structure is applied to a case where an in-vehicle child safety lock is located at a rear side of a seat back or a lower part of the rear side thereof or at a bottom surface of a seat cushion, the unadjustable length of the short tether allows that the ladder buckle is located at the rear side of the seat back or the lower part of the rear side thereof or at the bottom surface of the seat cushion after the hook is fixedly connected with the child safety lock at the above position, so it is quite inconvenient to adjust the length of the long tether.

SUMMARY OF THE INVENTION

An object of the utility model is to provide a tether structure for a safety seat which is capable of adjusting the length of the tether conveniently and reliably when an in-vehicle child safety lock is located at a rear side of a seat back or a lower part of the rear side thereof or at a bottom surface of a seat cushion, thus solving the disadvantages of the above art.

The tether structure for a safety seat provided by the utility model comprises a hook, an adjustment buckle and a first long tether, wherein the hook is fixed at one end of the first long tether, the first long tether penetrates through the adjustment buckle, the adjustment buckle locks one end of the first long tether with the hook after adjusting its length, a short tether is fixed on the adjustment buckle, an adjuster is fixed at one end of the short tether, a second long tether penetrates through the adjuster, one end of the second long tether is fixedly connected with the safety seat, and the adjuster locks one end of the second long tether connected with the safety seat after adjusting its length.

Further preferably, the adjuster comprises a shell, a cross bar, a spring movable member mounted in a cavity of the shell, a U-shaped spring button and a tightness warning block; horizontally penetrating tether passages are respectively arranged at upper and lower ends of the shell, and the spring movable member is mounted at the lower-end tether passage; the U-shaped spring button is mounted at the upper-end tether passage, and its button portion extends through the shell; an observation hole is arranged at a middle part of a top surface of the shell, the tightness warning block is positioned below the observation hole, a movement indicating plate is arranged at the top of the tightness warning block, and the spring movable member is fixedly connected with the movement indicating plate; both ends of the cross bar are positioned on longitudinal portions at both ends of the U-shaped spring button; the second long tether is penetrated from the upper-end tether passage and then sleeved on the cross bar, and the second long tether is clamped between the cross bar and a side wall of the tether passage under the action of the U-shaped spring button; a connecting sleeve at one end portion of the short tether is sleeved on a connecting block at a side portion of the tether passage and on a cross bar of the spring movable member, and the cross bar of the spring movable member is pulled by the connecting sleeve at one end portion of the short tether, and then displaced right below the observation hole together with the movement indicating plate; and a spring on the U-shaped spring button butts against a lower port of the upper-end tether passage along an extension block, and a spring of the spring movable member butts against a side wall at a left end of the cavity of the shell.

Further preferably, the cross bar of the spring movable member and the movement indicating plate are combined with each other to form an integral structure.

Further preferably, a tether positioning block is arranged at an upper end of the shell, the tether positioning block is provided with two perforations, and both ends of the second long tether respectively penetrate through the two perforations.

Further preferably, the shell comprises a first base plate and a first hood which are fixed to each other, passage ports at both ends of the tether passage are respectively arranged on a top surface of the first hood and the first base plate, and the spring movable member, the U-shaped spring button, the tightness warning block and the movement indicating plate are mounted within the hood.

Further preferably, the adjustment buckle comprises a housing and a spline roller, and obliquely disposed elongated holes are respectively arranged at front and rear ends of the housing; the spline roller is located in a cavity of the housing and both ends thereof are respectively inserted into the elongated holes; a tether perforation is arranged at the bottom of the housing; and the first long tether is inserted from the tether perforation and then sleeved on the spline roller, and a connecting sleeve at one end portion of the short tether is sleeved on a connecting block at a side portion of the tether perforation.

Further preferably, the housing comprises a second hood and a second base plate which are mutually joined together, both ends of the second base plate are bent to form stop blocks, and both ends of the hood are respectively fixedly buckled on the two stop blocks; and a through slot is arranged at one side of the hood for a side portion of the connecting sleeve at one end portion of the short tether to pass through. Further preferably, the tether structure further comprises an arc-shaped elastic piece, one end of which is fixed to one end of a hook portion of the hook and the other end of which butts against an inner side of the other end of the hook portion.

Further preferably, the other end of the first long tether and the other end of the second long tether are respectively fixedly flanked with a loop strap and a hook strap, which are adhered to each other to form a collar so that the other section of the first long tether and the other section of the second long tether are rolled.

The tether structure for a safety seat provided by the utility model is configured to adjust the length of the first long tether by the adjustment buckle and to adjust the length of the second long tether by the adjuster, thus further improving the overall length adjustment performance of the tether; and after the hook is fixedly connected with a child safety lock, the adjuster is located at the top of a backrest of the car seat, facilitating to observe whether the tightness warning block (showing that the tether is not tightened) or the movement indicating plate (showing that the tether has been tightened) is shown by the observation hole, thus it is easier to judge whether the tether has been tightened, and it is more convenient and reliable to adjust the length.

BRIEF DESCRIPTION OF THE DRAWINGS

Fig. 1 is a schematic structural view of the prior art in the background art; Fig. 2 is a schematic view of the overall structure of Embodiment 1; Fig. 3 is a full cross-sectional view of Embodiment 1; Fig. 4 is a schematic structural view (1) of an adjuster of Embodiment 2; Fig. 5 is a schematic structural view (II) of the adjuster of Embodiment 2; Fig. 6 is a schematic structural view of an adjustment buckle of Embodiment 3; and Fig. 7 is a schematic structural view of a hook of Embodiment 4.

DETAILED DESCRIPTION OF THE INVENTION

The technical solutions in the embodiments of the utility model are to be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. It is apparent that the described embodiments are only part of rather than all of the embodiments in the utility model. Based on the embodiments of the utility model, all other embodiments obtained by the ordinary persons skilled in the art belong to the protection scope of the utility model.

Embodiment 1 As shown in Figs. 2 and 3, a tether structure for a safety seat described in this embodiment comprises a hook 1, an adjustment buckle 2 and a first long tether 4, wherein the hook 1 is fixed at one end of the first long tether 4, the first long tether 4 penetrates through the adjustment buckle 2, the adjustment buckle 2 locks one end of the first long tether 4 with the hook 1 after adjusting its length, a short tether 5 is fixed on the adjustment buckle 2, an adjuster 3 is fixed at one end of the short tether 5, a second long tether 6 penetrates though the adjuster 3, one end of the second long tether 6 is fixedly connected with the safety seat, and the adjuster 3 locks one end of the second long tether 6 connected with the safety seat after adjusting its length.

The working principle of the above structure is as follows: when an in-vehicle child safety lock is located at a rear side of a seat back or a lower part of the rear side thereof or at a bottom surface of a seat cushion, the hook is bypassing the top of the seat back and fixedly connected with the child safety lock, and then the adjustment buckle and the first long tether are located at the rear side of the seat back; the adjustment buckle can adjust the length of the first long tether so that the adjustment buckle is close to the top of the seat back to facilitate adjusting the tightness; and the adjuster is placed at the top of the seat back, and finally the length of the second long tether is adjusted by the adjuster so as to adjust whether the safety seat has been tightened, thus making it more convenient to adjust the tightness of the tether structure.

Embodiment 2 As shown in Figs. 4 and 5, a tether structure for a safety seat described in this embodiment is substantially the same as that in Embodiment 1, but different from Embodiment 1 in that: the adjuster 3 comprises a shell 30, a cross bar 38, a spring movable member 35 mounted in a cavity of the shell 30, a U-shaped spring button 31 and a tightness warning block 36; horizontally penetrating tether passages 34 are respectively arranged at upper and lower ends of the shell 30, and the spring movable member 35 is mounted at the lower-end tether passage 34; the U-shaped spring button 31 is mounted at the upper-end tether passage 34, and its button portion extends through the shell 30; an observation hole 33 is arranged at a middle part of a top surface of the shell 30, the tightness warning block 36 is positioned below the observation hole 33, a movement indicating plate 37 (for indicating that the tether has been tightened) is arranged at the top of the tightness warning block 36, and the spring movable member 35 is fixedly connected with the movement indicating plate 37; both ends of the cross bar 38 are positioned on longitudinal portions at both ends of the U-shaped spring button 31; the second long tether 6 is penetrated from the upper-end tether passage 34 and then sleeved on the cross bar 38, the second long tether 6 is clamped between the cross bar 38 and a side wall of the tether passage 34 under the action of the U-shaped spring button 31, and when the spring button 31 is pressed, the gap between the cross bar 38 and the side wall of the tether passage 34 becomes larger so that the other end of the second long tether 6 is pulled to perform the tightening operation of the tether; a connecting sleeve at one end portion of the short tether 5 is sleeved on a connecting block 40 at a side portion of the tether passage 34 and on a cross bar 352 of the spring movable member 35, and the cross bar 352 of the spring movable member 35 is pulled by the connecting sleeve at one end portion of the short tether 5, and then displaced right below the observation hole 33 together with the movement indicating plate 37, thus indicating that the tether has been tightened, wherein the movement indicating plate 37 is a green plastic part and the tightness warning block 36 is a red plastic part; and a spring 311 on the U-shaped spring button 31 butts against a lower port of the upper-end tether passage 34 along an extension block, and a spring 351 of the spring movable member 35 butts against a side wall at a left end of the cavity of the shell 30. This structure imparts the adjuster with a tightness indicating function of whether the tether has been tightened, so that a user can visually obtain the tightness information of the tether, thus preventing cases in which the tether has been loosened but the user cannot know the tightness when the safety seat is used.

In this embodiment, the cross bar 352 of the spring movable member 35 and the movement indicating plate 37 are combined with each other to form an integral structure. This structure makes parts manufacturing and mounting convenient and reliable.

In this embodiment, a tether positioning block 39 is arranged at an upper end of the shell 30, the tether positioning block 39 is provided with two perforations 391, and both ends of the second long tether 6 respectively penetrate through the two perforations 391, thus positioning the tether.

In this embodiment, the shell 30 comprises a first base plate 302 and a first hood 301 which are fixed to each other, passage ports at both ends of the tether passage 34 are respectively arranged on a top surface of the first hood 301 and the first base plate 302, and the spring movable member 35, the U-shaped spring button 31, the tightness warning block 36 and the movement indicating plate 37 are mounted within the hood 301. This structure makes parts manufacturing as well as the mounting of internal components convenient and reliable.

Embodiment 3 As shown in Fig. 6, a tether structure for a safety seat described in this embodiment is substantially the same as that in Embodiment 1, but different from Embodiment 1 in that: the adjustment buckle 2 comprises a housing 20 and a spline roller 21, and obliquely disposed elongated holes 203 are respectively arranged at front and rear ends of the housing 20; the spline roller 21 is located in a cavity of the housing 20 and both ends thereof are respectively inserted into the elongated holes 203; a tether perforation 23 is arranged at the bottom of the housing 20; and the first long tether 4 is inserted from the tether perforation 23 and then sleeved on the spline roller 21, and a connecting sleeve at one end portion of the short tether 5 is sleeved on a connecting block 231 at a side portion of the tether perforation 23. In this structure, the spline roller is provided with convex teeth at a peripheral side of a roller body, and the convex teeth allows the tether to be locked when the section of the first long tether with the hook is vertically pulled downwards; when the length needs to be increased, the section of the first long tether with the hook is lifted upwards so that the spline roller is rotated under the pulling action of the tether to increase the length; and when the length needs to be shortened, the section of the first long tether without the hook is pulled so that the spline roller is rotated under the pulling action of the tether to shorten the length. This structure makes adjustment convenient and reliable.

in this embodiment, the housing 20 comprises a second hood 201 and a second base plate 202 which are mutually joined together, both ends of the second base plate 202 are bent to form stop blocks, and both ends of the hood are respectively fixedly buckled on the two stop blocks; and a through slot 24 is arranged at one side of the hood for a side portion of the connecting sleeve at one end portion of the short tether 5 to pass through.

In this embodiment, a handle plate 22 is arranged at a lower side of the housing 20 to adjust the tether more conveniently.

Embodiment 4 As shown in Fig. 7, a tether structure for a safety seat described in this embodiment is substantially the same as that in Embodiment 1, but different from Embodiment 1 in that: the tether structure further comprises an arc-shaped elastic piece 11, one end of which is fixed to one end of a hook portion of the hook 1 and the other end of which butts against an inner side of the other end of the hook portion.

Embodiment 5 As shown in Fig. 2, a tether structure for a safety seat described in this embodiment is substantially the same as that in Embodiment 1, but different from Embodiment 1 in that: the other end of the first long tether 4 and the other end of the second long tether 6 are respectively fixedly flanked with a loop strap 7 and a hook strap 8, which are adhered to each other to form a collar so that the other section of the first long tether 4 and the other section of the second long tether 6 are rolled.

The utility model is not limited to the above most preferred embodiment, and various forms of other products can be obtained by any person under the inspiration of the utility model. However, regardless of any change to its shape or structure, any technical solution which is the same as or similar to the present application shall fall into the protection scope of the utility model.

Claims

CLAIMS1. A tether structure for a safety seat, comprising a hook, an adjustment buckle and a first long tether, wherein the hook is fixed at one end of the first long tether, the first long tether penetrates through the adjustment buckle, the adjustment buckle locks one end of the first long tether with the hook after adjusting its length, a short tether is fixed on the adjustment buckle, an adjuster is fixed at one end of the short tether, a second long tether penetrates through the adjuster, one end of the second long tether is fixedly connected with the safety seat, and the adjuster locks one end of the second long tether connected with the safety seat after adjusting its length.
2. The tether structure for a safety seat according to claim 1, wherein the adjuster comprises a shell, a cross bar, a spring movable member mounted in a cavity of the shell, a U-shaped spring button and a tightness warning block; horizontally penetrating tether passages are respectively arranged at upper and lower ends of the shell, and the spring movable member is mounted at the lower-end tether passage; the U-shaped spring button is mounted at the upper-end tether passage, and its button portion extends through the shell; an observation hole is arranged at a middle part of a top surface of the shell, the tightness warning block is positioned below the observation hole, a movement indicating plate is arranged at the top of the tightness warning block, and the spring movable member is fixedly connected with the movement indicating plate; both ends of the cross bar are positioned on longitudinal portions at both ends of the U-shaped spring button; the second long tether is penetrated from the upper-end tether passage and then sleeved on the cross bar, and the second long tether is clamped between the cross bar and a side wall of the tether passage under the action of the U-shaped spring button; a connecting sleeve at one end portion of the short tether is sleeved on a connecting block at a side portion of the tether passage and on a cross bar of the spring movable member, and the cross bar of the spring movable member is pulled by the connecting sleeve at one end portion of the short tether, and then displaced right below the observation hole together with the movement indicating plate; and a spring on the U-shaped spring button butts against a lower port of the upper-end tether passage along an extension block, and a spring of the spring movable member butts against a side wall at a left end of the cavity of the shell.
3. The tether structure for a safety seat according to claim 2, wherein the cross bar of the spring movable member and the movement indicating plate are combined with each other to form an integral structure.
4. The tether structure for a safety seat according to claim 2, wherein a tether positioning block is arranged at an upper end of the shell, the tether positioning block is provided with two perforations, and both ends of the second long tether respectively penetrate through the two perforations.
5. The tether structure for a safety seat according to claim 2, wherein the shell comprises a first base plate and a first hood which are fixed to each other, passage ports at both ends of the tether passage are respectively arranged on a top surface of the first hood and the first base plate, and the spring movable member, the U-shaped spring button, the tightness warning block and the movement indicating plate are mounted within the hood.
6. The tether structure for a safety seat according to claim 1, wherein the adjustment buckle comprises a housing and a spline roller, and obliquely disposed elongated holes are respectively arranged at front and rear ends of the housing; the spline roller is located in a cavity of the housing and both ends thereof are respectively inserted into the elongated holes; a tether perforation is arranged at the bottom of the housing; and the first long tether is inserted from the tether perforation and then sleeved on the spline roller, and a connecting sleeve at one end portion of the short tether is sleeved on a connecting block at a side portion of the tether perforation.
7. The tether structure for a safety seat according to claim 6, wherein the housing comprises a second hood and a second base plate which are mutually joined together, both ends of the second base plate are bent to form stop blocks, and both ends of the hood are respectively fixedly buckled on the two stop blocks; and a through slot is arranged at one side of the hood for a side portion of the connecting sleeve at one end portion of the short tether to pass through.
8. The tether structure for a safety seat according to claim 1, further comprising an arc-shaped elastic piece, one end of which is fixed to one end of a hook portion of the hook and the other end of which butts against an inner side of the other end of the hook portion.
9. The tether structure for a safety seat according to claim 1, wherein the other end of the first long tether and the other end of the second long tether are respectively fixedly flanked with a loop strap and a hook strap, which are adhered to each other to form a collar so that the other section of the first long tether and the other section of the second long tether are rolled.