CN221067857U - Seat belt locking mechanism and children's products - Google Patents

Abstract

The utility model discloses a safety belt locking mechanism and a children's product. The children's product comprises a safety belt assembly, wherein the safety belt assembly has a safety belt locking mechanism, wherein the locking mechanism comprises a shell, a locking member and a safety belt, wherein the shell has a receiving cavity, and a first opening and a second opening which are connected to the receiving cavity, wherein the first opening and the second opening are respectively arranged on two different sides of the shell; the locking member is rotatably arranged in the receiving cavity around a rotation center line, wherein the locking member has a first end and a second end; the safety belt passes into the receiving cavity from the first opening, and passes out of the receiving cavity from the second opening; the locking mechanism has a locking state and an unlocking state, wherein when the locking mechanism is in the locking state, the safety belt is clamped between the first end and the shell; when the locking mechanism is in the unlocking state, there is a gap between the locking member and the shell, so that the safety belt can slide from the first opening toward the second opening along its own length direction. The locking mechanism has a simple structure and a low manufacturing cost.

Description

Seat belt locking mechanism and children's products

Technical Field

The utility model relates to a safety belt locking mechanism and children's products.

Background technique

To ensure the safety of children, seat belt assemblies are provided in some children's products, such as stroller seats and safety seats. The seat belt assemblies include locking mechanisms, which can lock the seat belts so that the seat belts restrain the children, thereby preventing the children from getting hurt. The locking mechanism can also be unlocked, and in the unlocked state, the length of the seat belts can be adjusted.

Chinese patent CN201280112Y discloses a seat belt adjustment mechanism, which is provided with an open cavity on the seat, a cam and a torsion spring are provided in the cavity, a ratchet is protruding from the bottom surface of the cam, and the mechanism is also provided with a base surface facing the ratchet. Under the action of the torsion spring, the seat belt is locked between the ratchet and the base surface. A handle is protruding from the cam, and the mechanism is also provided with a button and a reset spring. One end of the button is provided with a push rod for driving the handle to move downward. When the length of the seat belt needs to be adjusted, the button is pressed downward, and the push rod drives the handle to move downward, so that the seat belt is released from between the ratchet and the base surface. When the button is released, the reset spring drives the button back to its original position. The mechanism has a complex structure and a high manufacturing cost, and the button needs to be pressed every time the seat belt is adjusted, which is troublesome to operate.

Summary of the invention

The utility model aims to provide a new safety belt locking mechanism.

In order to achieve the above object, the technical solution adopted by the utility model is: a seat belt locking mechanism, the locking mechanism comprising:

A shell having a receiving cavity, and a first opening and a second opening communicating with the receiving cavity, wherein the first opening and the second opening are respectively arranged on two different sides of the shell;

A locking member, the locking member is rotatably disposed on the housing around a rotation center line and is located in the receiving cavity, the locking member having a first end and a second end disposed on two different sides of the rotation center line;

A safety belt, which passes through the first opening into the receiving cavity, and passes through the first end and the second end in sequence along its length direction, and then passes out of the receiving cavity from the second opening;

The locking mechanism has a locked state and an unlocked state. When the locking mechanism is in the locked state, the first end portion abuts against the shell, so that the safety belt is clamped between the first end portion and the shell. When the locking mechanism is in the unlocked state, there is a gap between the locking member and the shell, so that the safety belt can slide from the first opening toward the second opening along its own length direction.

Preferably, during the transition of the locking mechanism between the locked state and the unlocked state, a distance between the second end and the second opening is always greater than 0, and/or a length of the safety belt between the second end and the second opening is always greater than 0.

Preferably, the shell is provided with a rest area for cooperating with the first end portion, the rest area is located on the cavity wall of the accommodating cavity, and there is a distance greater than 0 between the rest area and the first opening. When the locking mechanism is in the locking state, the safety belt is clamped between the first end portion and the rest area.

Further preferably, the locking mechanism further comprises an elastic member, and the elastic member is configured to provide a force required for the locking member to rotate so that the first end portion is separated from the housing.

Furthermore, the locking member is rotatably connected to the housing via a rotating shaft, the elastic member is a torsion spring, the torsion spring is sleeved on the rotating shaft, and two ends of the torsion spring respectively abut against the second end and the housing.

Preferably, the first end portion has a pressing portion for pressing the safety belt, the outer peripheral surface of the pressing portion is an arcuate surface, and/or the locking member also has an arcuate guide portion, the arcuate guide portion is located between the first end portion and the second end portion, and the safety belt is sequentially arranged around the first end portion, the arcuate guide portion and the second end portion along the length direction.

Preferably, the shell includes a base and a cover body fixedly connected, the base and the cover body cooperate with each other to form the accommodating cavity, the locking piece is rotatably connected to the base, the first opening is provided on the cover body, and the second opening is provided on the base.

The purpose of the utility model is to provide a children's product.

To achieve the above object, the technical solution adopted by the utility model is: a children's product, including a product body with a seat, and a safety belt assembly arranged on the product body, wherein the safety belt assembly has the above-mentioned safety belt locking mechanism.

Furthermore, the shell is fixedly arranged on the seat, and the safety belt has an adjustment end and a connection end which are arranged at two different ends in its length direction, the adjustment end is adjacent to the first opening, the connection end is adjacent to the second opening, and the adjustment end is located above the seat.

Furthermore, the safety belt assembly includes two shoulder straps, and the connecting end of the safety belt is fixedly connected to the two shoulder straps.

Due to the application of the above technical solution, the utility model has the following advantages compared with the prior art: the children's product of the utility model includes a safety belt locking mechanism, which has a simple structure and includes a shell, a locking member and a safety belt. The locking member is rotatably arranged on the shell, and the locking mechanism can be switched between a locked state and an unlocked state by driving the locking member to rotate.

BRIEF DESCRIPTION OF THE DRAWINGS

Figure 1 is a schematic diagram of the assembly of a seat pocket and a safety belt assembly according to a specific embodiment of the utility model;

Figure 2 is an exploded schematic diagram of the seat belt locking mechanism in Figure 1;

Figure 3 is a longitudinal cross-sectional view of the seat belt locking mechanism in Figure 1 in an unlocked state;

Figure 4 is a longitudinal cross-sectional schematic diagram of the seat belt locking mechanism in Figure 1 in a locked state;

FIG5 is an exploded schematic diagram of a seat belt locking mechanism in another embodiment;

Among them: 100, seat belt assembly; 110, seat belt locking mechanism; 120, shoulder strap; 1, shell; 10, receiving chamber; 11, cover; 111, first opening; 12, base; 121, second opening; 122, abutment area; 123, through hole; 2, locking member; 21, first end; 211, pressing portion; 22, second end; 221, driving portion; 23, arc-shaped guide portion; 24, unlocking portion; 3, seat belt; 31, adjustment end; 32, connecting end; 4, rotating shaft; 5, elastic member; 200, seat; 300, backrest.

Detailed ways

The following descriptions of the front, back, left, right, top and bottom directions are all defined with reference to the directions observed by a child sitting on a seat, and are only for the purpose of facilitating the description of the relative positional relationship of the various components.

The technical solution of the utility model is further described below in conjunction with the accompanying drawings and specific embodiments.

Referring to a seat pocket shown in FIG. 1 , the seat pocket includes a seat pocket body and a safety belt assembly 100 disposed on the seat pocket body. The seat pocket body includes a seat 200 , on which a child sits, and the safety belt assembly 100 provides safety protection for the child sitting on the seat 200 .

The seat belt assembly 100 has a seat belt locking mechanism 110, as shown in FIGS. 2 to 4, the seat belt locking mechanism 110 includes a housing 1, a locking member 2 and a seat belt 3. The housing 1 has a receiving cavity 10, and a first opening 111 and a second opening 121 communicating with the receiving cavity 10, and the first opening 111 and the second opening 121 are respectively arranged on different sides of the housing 1; the locking member 2 is rotatably arranged on the housing 1 around the rotation center line and is located in the receiving cavity 10. The locking member 2 has a first end 21 and a second end 22 respectively arranged on different sides of the rotation center line, and the seat belt 3 passes through the receiving cavity 10 from the first opening 111, and passes through the first end 21 and the second end 22 in sequence along its own length direction, and then passes out of the receiving cavity 10 from the second opening 121.

The locking mechanism has a locked state and an unlocked state. When the locking mechanism is in the locked state, the first end 21 abuts against the shell 1, so that the safety belt 3 is clamped between the first end 21 and the shell 1, thereby tightening and protecting the child wearing the safety belt 3; when the locking mechanism is in the unlocked state, there is a gap between the locking member 2 and the shell 1, so that the safety belt 3 can slide from the first opening 111 toward the second opening 121 along its own length direction. In this state, the length of the safety belt 3 can be easily adjusted by pulling it.

As shown in Fig. 1 and Fig. 2, in this embodiment, the housing 1 is fixedly arranged on the seat 200, and the safety belt 3 has an adjustment end 31 and a connection end 32 respectively arranged at two different ends in the length direction of the safety belt 3, the adjustment end 31 is adjacent to the first opening 111, the connection end 32 is adjacent to the second opening 121, and the adjustment end 31 is located above the seat 200. The seat body is also provided with a backrest 300 connected to the seat 200, and the safety belt assembly 100 includes two shoulder straps 120, the shoulder straps 120 are wound around the backrest 300, and the connection end 32 of the safety belt 3 is fixedly connected to the two shoulder straps 120. When a child sits on the seat, the shoulders are set in the two shoulder straps 120, and the shoulder straps 120 can be tightened by pulling the adjustment end 31 forward, and the child can be protected by the shoulder straps 120 through the locking mechanism.

2 to 4 , in this embodiment, the specific structure of the seat belt locking mechanism 110 is as follows:

In this embodiment, the first opening 111 and the second opening 121 are respectively arranged on the front and rear sides of the housing 1, and the locking member 2 is rotatably connected to the housing 1 through the rotating shaft 4. Specifically, the housing 1 includes a cover body 11 and a base 12 that are fixedly connected, wherein the cover body 11 is located above the base 12, and the cover body 11 and the base 12 cooperate with each other to form a receiving chamber 10. Referring to Figures 3 and 4, the first opening 111 is arranged on the front side of the cover body 11, and the second opening 121 is arranged on the rear side of the base 12. In the front-to-back direction, the first opening 111 is located in front of the second opening 121; the middle part of the locking member 2 is rotatably connected to the base 12 through the rotating shaft 4, and the axis of the rotating shaft 4 extends in the same line as the rotation center line and both extend in the left-right direction. In this embodiment, the rear part of the cover body 11 and the rear part of the base 12 are fixed by a buckle, and the front part of the cover body 11 and the front part of the base 12 are fixed by bolts.

The safety belt 3 passes downward from the first opening 111 into the receiving cavity 10, passes through the bottom of the locking member 2, and finally passes backward from the second opening 121. In this embodiment, the first end 21 and the second end 22 are respectively arranged at the front and rear sides of the locking member 2, wherein the first end 21 is located at the front side of the rotating shaft 4, and the second end 22 is located at the rear side of the rotating shaft 4. The locking member 2 also has an arc-shaped guide portion 23, which is located between the first end 21 and the second end 22. The safety belt 3 is sequentially wound around the first end 21, the arc-shaped guide portion 23 and the second end 22 along the length direction. Specifically, the arc-shaped guide portion 23 protrudes downward from the rotating shaft 4, and has an arc surface centered on the rotation center line. The safety belt 3 contacts the arc surface, which reduces the resistance when the safety belt 3 and the locking member 2 move relative to each other.

The shell 1 is provided with a supporting area 122 for cooperating with the first end 21 to abut against the supporting area 122, which is located on the cavity wall of the accommodating cavity 10. The first end 21 has a pressing portion 211 for pressing the safety belt 3, and the outer peripheral surface of the pressing portion 211 is an arc-shaped surface. As shown in Figure 4, the supporting area 122 is located on the front side of the base 12. When the locking mechanism is in the locked state, the safety belt 3 is clamped between the pressing portion 211 of the first end 21 and the supporting area 122. In this state, the safety belt 3 cannot slide backwards, and the child wearing the shoulder belt 120 is tied tightly and protected.

As shown in FIG. 3 and FIG. 4 , there is a spacing greater than 0 between the abutment area 122 and the first opening 111, and the abutment area 122 is located below the first opening 111 in the up-down direction. When the adjustment end 31 of the safety belt 3 is pulled forward, the height difference between the first opening 111 and the abutment area 122 forms a driving force through the lever principle, so that the safety belt 3 drives the pressing portion 211 to move upward, and the pressing portion 211 drives the locking member 2 to rotate around the rotation center line, and increases the distance between the pressing portion 211 and the abutment area 122, so that the safety belt 3 can slide forward. After the child sits on the seat 200, the caregiver can adjust the length of the safety belt 3 by pulling the adjustment end 31 of the safety belt 3 forward, and tighten the shoulder strap 120.

In this embodiment, the locking member 2 is further provided with an unlocking portion 24, as shown in FIG3 and FIG4, the unlocking portion 24 is located at the upper portion of the second end portion 22, and by pressing the unlocking portion 22 downward to drive the second end portion 22 to move downward, the locking structure will be converted to an unlocked state. When the shoulder strap 120 is too tight or the shoulder strap 120 needs to be removed, a finger is inserted into the first opening 111 and the unlocking portion 22 is pressed, and then the safety belt 3 is pulled backward to drive the safety belt 3 to move backward, so that the shoulder strap 120 can be loosened.

In this embodiment, the second end portion 22 has a driving portion 221 in contact with the safety belt 3, and the second opening 121 is located above the driving portion 221. As shown in FIG3 and FIG4, during the process of the locking mechanism switching between the locked state and the unlocked state, the second end portion 22 and the second opening 121 always have a spacing greater than 0, and the length of the safety belt 3 between the second end portion 22 and the second opening 121 is always greater than 0. When the child moves forward, the child will drive the shoulder belt 120 to drive the safety belt 3 to move backward. At this time, through the principle of leverage, the height difference between the second opening 121 and the driving portion 221 forms a driving force, which causes the safety belt 3 to drive the driving portion 221 to move upward, and the driving portion 221 drives the locking member 2 to rotate around the rotation center line, and the locking mechanism switches to the locked state, and the pressing portion 211 clamps the safety belt 3 downward to prevent the child from moving forward, thereby protecting the child. As shown in Figures 3 and 4, in this embodiment, a through hole 123 is provided on the lower rear side of the base 12 for the second end 22 to move downward, and the distance from the driving part 221 to the rotation center line is greater than the distance from the pressing part 211 to the rotation center line, so that the pressing part 211 can apply sufficient squeezing force to the seat belt 3.

In other embodiments, the safety belt assembly 100 is disposed on other children's products other than the seat pocket, such as a safety seat. On the children's product, the safety belt assembly 100 is disposed in a manner similar to that of the present embodiment.

In other embodiments, the locking mechanism further includes an elastic member 5, which is configured to provide the force required for the locking member 2 to rotate so that the first end 21 is separated from the housing 1. Specifically, as shown in FIG5 , the elastic member 5 is a torsion spring, which is sleeved on the rotating shaft 4, and the two ends of the torsion spring are respectively against the second end 22 and the housing 1. Under the action of the elastic member 5, the locking member 2 can rotate around the rotation center line and make the first end 21 away from the abutment area 112.

In summary, the seat belt locking mechanism 110 of the present embodiment has a simple structure and low manufacturing cost. When the child moves forward, the connecting end 32 is subjected to a backward pulling force, the seat belt 3 drives the locking member 2 to rotate and automatically drives the locking mechanism to be converted into a locked state to implement protection. When adjusting the length of the seat belt 3 by the adjusting end 31, there is no need to manually unlock the locking mechanism. Pull the adjusting end 31 forward and the locking mechanism will automatically convert to an unlocked state.

The above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with the technology to understand the content of the utility model and implement it accordingly, and they cannot be used to limit the protection scope of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims (10)

1. A seat belt locking mechanism, characterized in that the locking mechanism comprises:

The shell is provided with a containing cavity, a first opening and a second opening which are communicated with the containing cavity, and the first opening and the second opening are respectively arranged on two different sides of the shell;

The locking piece is rotationally arranged on the shell around the rotation center line and is positioned in the accommodating cavity, and the locking piece is provided with a first end part and a second end part which are respectively arranged at two different sides of the rotation center line;

The safety belt penetrates into the accommodating cavity from the first opening, sequentially winds the first end part and the second end part along the length direction of the safety belt, and penetrates out of the accommodating cavity from the second opening;

The locking mechanism has a locking state and an unlocking state, and in the locking state, the first end portion abuts against the housing so that the seat belt is clamped between the first end portion and the housing; the locking mechanism is in the unlocking state, a gap is reserved between the locking piece and the shell, and the safety belt can slide from the first opening to the second opening along the length direction of the safety belt.

2. The seat belt locking mechanism as claimed in claim 1, wherein: the locking mechanism always has a distance between the second end and the second opening greater than 0 in the process of switching between the locking state and the unlocking state, and/or the length of the safety belt between the second end and the second opening is always greater than 0.

3. The seat belt locking mechanism as claimed in claim 1, wherein: the shell is provided with an abutting area for abutting against the first end part in a matched mode, the abutting area is located on the cavity wall of the accommodating cavity, a distance larger than 0 is reserved between the abutting area and the first opening, and when the locking mechanism is in the locking state, the safety belt is clamped between the first end part and the abutting area.

4. The seat belt locking mechanism as claimed in claim 1, wherein: the locking mechanism further includes a resilient member configured to provide a force required to rotate the locking member to disengage the first end from the housing.

5. The seat belt locking mechanism as claimed in claim 4, wherein: the locking piece is rotationally connected to the shell through a rotating shaft, the elastic piece is a torsion spring, the torsion spring is sleeved on the rotating shaft, and two ends of the torsion spring respectively lean against the second end part and the shell.

6. The seat belt locking mechanism as claimed in claim 1, wherein: the first end is provided with a pressing part for pressing the safety belt, the outer peripheral surface of the pressing part is an arc surface, and/or the locking piece is further provided with an arc guide part, the arc guide part is positioned between the first end and the second end, and the safety belt sequentially winds the first end, the arc guide part and the second end along the length direction.

7. The seat belt locking mechanism as claimed in claim 1, wherein: the shell comprises a base and a cover body which are fixedly connected, the base and the cover body are matched with each other to form the accommodating cavity, the locking piece is rotationally connected to the base, the first opening is formed in the cover body, and the second opening is formed in the base.

8. The utility model provides a children's articles for use, includes the articles for use body that has the seat, locates the safety belt subassembly on the articles for use body, its characterized in that: the seat belt assembly has therein a seat belt locking mechanism as claimed in any one of claims 1 to 7.

9. The child product according to claim 8, wherein: the shell is fixedly arranged on the seat, the safety belt is provided with an adjusting end and a connecting end which are respectively arranged at two different ends in the length direction of the safety belt, the adjusting end is adjacent to the first opening, the connecting end is adjacent to the second opening, and the adjusting end is arranged above the seat.

10. The child product according to claim 9, wherein: the safety belt assembly comprises two shoulder belts, and the connecting end of the safety belt is fixedly connected with the two shoulder belts.