Safety belt retractor

Abstract

The utility model relates to the field of child safety products, and discloses a safety belt retractor which comprises a woven belt and a support, limiting fluted discs are rotationally connected to the inner walls of the two sides of the support, rotating shafts are fixedly connected to the close sides of the two limiting fluted discs, limiting shafts are installed on the inner walls of the two limiting fluted discs, and the limiting fluted discs are fixedly connected to the rotating shafts. A second shaft sleeve is installed on one side of the limiting shaft, a connecting sleeve is fixedly connected to one side of the second shaft sleeve, a coil spring is fixedly connected to the end, away from the limiting shaft, of the connecting sleeve, a protection assembly is fixedly connected to the outer portion of the support, and a locking piece is rotationally connected to one side of the support. The limiting fluted disc is connected with the locking piece in a meshed mode. According to the child safety seat, the fastening effect is effectively enhanced through cooperation of the locking piece and the tension spring, the stability and comfort of the child safety seat are guaranteed, and in addition, due to the elastic potential energy of the tension spring, unnecessary loosening or influence caused by external force pulling of the braid can be avoided.

Description

Technical Field

[0001] This utility model relates to the field of child safety products, and in particular to a seat belt retractor. Background Technology

[0002] Infant seat webbing is an essential part of child safety seats. It is typically used to secure an infant or child in the seat and ensure their safety. The webbing is usually made of durable, soft, and strong materials. Its purpose is to effectively restrain the child and reduce the risk of injury in the event of sudden braking or a collision.

[0003] Infant car seat webbing is typically used to secure an infant's position in the seat and ensure safety. The webbing is usually made of strong fiber material, which has high abrasion resistance and tensile strength. When the baby sits in the seat, the webbing is used to adjust the buckles or slip buckles to secure the baby to the seat and prevent accidental slipping or falling when the vehicle speed changes or there is a collision.

[0004] Existing infant car seat webbing has problems such as protrusion and difficulty in storage, which affects the neatness and ease of use of the seat to some extent. Protrusion and difficulty in storage not only make the seat look messy, but also increase the trouble for parents when operating it, especially in busy or emergency situations. Therefore, a seat belt retractor is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a seat belt retractor, which aims to improve the problems of exposed webbing and difficulty in storage in the prior art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A seat belt retractor includes a webbing and a support. Limiting gears are rotatably connected to the inner walls of both sides of the support. A rotating shaft is fixedly connected to the adjacent side of the two limiting gears. A limiting shaft is installed on the inner wall of the two limiting gears. A bushing is installed on one side of the limiting shaft. A connecting sleeve is fixedly connected to one side of the bushing. A coil spring is fixedly connected to the end of the connecting sleeve away from the limiting shaft. A protective component is fixedly connected to the outside of the support. A locking piece is rotatably connected to one side of the support. The limiting gears and the locking piece are engaged. The outer surface of the webbing is disposed on the inner wall of the rotating shaft.

[0008] As a further description of the above technical solution:

[0009] The protective assembly includes a housing 1, the rear end of which is fixedly connected to the front end of the support, and a housing 2 is installed at the front end of the housing 1 by screws.

[0010] As a further description of the above technical solution:

[0011] The rear end of the support is fixedly connected to a bushing, and one side of the limiting shaft is rotatably connected to the inner wall of the bushing.

[0012] As a further description of the above technical solution:

[0013] A tension spring is fixedly connected to one side of the locking piece, and the other end of the tension spring is fixedly connected to one side of the tension spring.

[0014] As a further description of the above technical solution:

[0015] One side of the coil spring is fixedly connected to the inner wall of one side of the outer casing, and one side of the locking piece is in contact with the outside of the webbing.

[0016] This utility model has the following beneficial effects:

[0017] In this invention, the seat belt retractor, through precise design, can effectively control the extension and retraction of the webbing, preventing the webbing from becoming loose or stretched outward when not in use. The engagement of the limiting tooth plate and the locking plate ensures that the webbing is effectively restrained during retraction, thereby avoiding instability during the retraction process. The torque force of the coil spring ensures rapid retraction of the webbing, while the cooperation between the locking plate and the tension spring effectively enhances the fastening effect, ensuring the stability and comfort of the child safety seat. In addition, the elastic potential energy of the tension spring prevents the webbing from becoming unnecessarily loose or affected by external forces. Attached Figure Description

[0018] Figure 1 This is a three-dimensional schematic diagram of a seat belt retractor proposed in this utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the locking piece of a seat belt retractor proposed in this utility model;

[0020] Figure 3 This is an exploded structural diagram of a seatbelt retractor proposed in this utility model;

[0021] Figure 4 This is a schematic diagram of the outer shell of a seatbelt retractor proposed in this utility model.

[0022] Legend:

[0023] 1. Webbing; 2. Limiting gear plate; 3. Rotating shaft; 4. Bushing 1; 5. Support; 6. Limiting shaft; 7. Bushing 2; 8. Outer shell 1; 9. Connecting sleeve; 10. Coil spring; 11. Outer shell 2; 12. Screw; 13. Locking piece; 14. Tension spring. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Reference Figures 1 to 3 This utility model provides an embodiment of a seat belt retractor, including a webbing 1 and a support 5. The inner walls on both sides of the support 5 are rotatably connected to limiting toothed discs 2. This design allows the limiting toothed discs 2 to rotate accordingly with the rotation of the support 5, providing a key component for controlling the retraction and extension of the webbing 1, thereby ensuring the flexibility and stability of the webbing 1. A rotating shaft 3 is fixedly connected to the adjacent side of the two limiting toothed discs 2. The setting of the rotating shaft 3 allows the limiting toothed discs 2 to effectively coordinate their rotation through the support of the rotating shaft 3, ensuring that the webbing 1 is not subjected to excessive friction or resistance during the retraction and extension process.

[0026] Limiting shafts 6 are installed on the inner walls of the two limiting toothed discs 2. The rotation of the limiting shafts 6 controls the running range of the limiting toothed discs 2, preventing the webbing 1 from being overstretched or over-retracted, and ensuring that the webbing 1 is always in a safe and appropriate position during use. A bushing 7 is installed on one side of the limiting shaft 6, and a connecting sleeve 9 is fixedly connected to one side of the bushing 7. The cooperation between the bushing 7 and the connecting sleeve 9 makes the structure more compact, and their combination realizes seamless transmission between rotations, improving the stability and durability of the entire retractor.

[0027] A coil spring 10 is fixedly connected to the end of the connecting sleeve 9 away from the limiting shaft 6. The coil spring 10 can effectively store and release energy through the fixed connection of the connecting sleeve 9, thereby providing the necessary rebound force to ensure that the webbing 1 can be smoothly retracted and maintain appropriate tension. A protective component is fixedly connected to the outside of the support 5. The design of the protective component not only improves the safety of the structure, but also effectively protects the internal components of the retractor, prevents external impact or dust from entering, and extends the service life. A locking piece 13 is rotatably connected to one side of the support 5. The limiting toothed disc 2 and the locking piece 13 are engaged. The engagement design of the locking piece 13 and the limiting toothed disc 2 ensures the stability of the webbing 1 when it is in a fixed position, prevents the webbing 1 from automatically loosening or moving without operation, and improves safety.

[0028] The outer surface of the webbing 1 is set on the inner wall of the rotating shaft 3. The webbing 1 is fixed by the inner wall of the rotating shaft 3 to ensure the stability of the webbing 1 in the retractor, thereby preventing the webbing 1 from slipping or falling off during use. The protective component includes a housing 8. The rear end of the housing 8 is fixedly connected to the front end of the support 5. The design of the housing 8 effectively protects the internal mechanism of the retractor. At the same time, by fixing it to the front end of the support 5, it provides additional support and protection for the retractor.

[0029] refer to Figure 3 and Figure 4 The front end of the outer casing 8 is fitted with the second outer casing 11 by screws 12. The installation of the second outer casing 11 by screws 12 makes the entire protective assembly more robust, increases the durability and shock resistance of the retractor, and ensures that the internal components are not easily damaged by external interference. The rear end of the support 5 is fixedly connected to the bushing 4. One side of the limiting shaft 6 is rotatably connected to the inner wall of the bushing 4. The function of the bushing 4 is to further enhance the rotational stability of the limiting shaft 6 and provide support for it, ensuring that the limiting shaft 6 can transmit force smoothly and efficiently when rotating.

[0030] A tension spring 14 is fixedly connected to one side of the locking plate 13, and the other end of the tension spring 14 is fixedly connected to one side of the tension spring 14. The tension spring 14 is designed to provide an elastic response when the locking plate 13 swings, ensuring that the locking plate 13 can quickly return to its original position, further improving the fastening effect of the seat belt.

[0031] One side of the coil spring 10 is fixedly connected to the inner wall of the outer casing 11, and one side of the locking piece 13 is in contact with the outside of the webbing 1. The connection between the coil spring 10 and the outer casing 11 ensures the continuity of the rebound force, while the contact between the locking piece 13 and the webbing 1 effectively prevents the webbing 1 from loosening or overstretching, ensuring the safety and stability of the webbing 1 in use.

[0032] Working principle: When needed, pull the webbing 1 and push the locking piece 13. The movement of the webbing 1 will cause the limiting shaft 6 to rotate. The rotation of the limiting shaft 6 will cause the bushing 7 to rotate, which in turn causes the connecting sleeve 9 to rotate. The rotation of the connecting sleeve 9 will cause the coil spring 10 to be subjected to torque, thus causing the coil spring 10 to rotate and deform. Under the rotation of the limiting shaft 6, the rotating shaft 3 will also be driven to rotate the limiting gear plate 2. After the webbing 1 is adjusted, release the webbing 1, and the coil spring 10 will return to its original position, causing the connecting sleeve 9 to rotate, which in turn causes the limiting shaft 6 to rotate. The reset allows the rotating shaft 3 to drive the limiting gear 2 to rotate. At this time, the rotation of the limiting gear 2 can engage the locking piece 13, causing the locking piece 13 to swing. The swing of the locking piece 13 can compress the tension spring 14, causing the tension spring 14 to deform and generate elastic potential energy. The swing of the locking piece 13 prevents the webbing 1 from being affected when it retracts, and allows the retraction of the webbing 1 to stop the child, improving the fastening effect. Through the engagement of the locking piece 13 and the limiting gear 2, the locking piece 13 locks the limiting gear 2, preventing the webbing 1 from stretching outward.

[0033] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A seatbelt retractor, comprising a webbing (1) and a support (5), characterized in that: The inner walls of both sides of the support (5) are rotatably connected to a limiting gear disc (2). A rotating shaft (3) is fixedly connected to the adjacent side of the two limiting gear discs (2). A limiting shaft (6) is installed on the inner wall of the two limiting gear discs (2). A bushing (7) is installed on one side of the limiting shaft (6). A connecting sleeve (9) is fixedly connected to one side of the bushing (7). A coil spring (10) is fixedly connected to the end of the connecting sleeve (9) away from the limiting shaft (6). A protective component is fixedly connected to the outside of the support (5). A locking piece (13) is rotatably connected to one side of the support (5). The limiting gear disc (2) and the locking piece (13) are meshed. The outer side of the webbing (1) is set on the inner wall of the rotating shaft (3).

2. A seatbelt retractor according to claim 1, characterized in that: The protective assembly includes a first housing (8), the rear end of which is fixedly connected to the front end of the support (5), and a second housing (11) is installed at the front end of the first housing (8) by screws (12).

3. A seatbelt retractor according to claim 1, characterized in that: The rear end of the support (5) is fixedly connected to a bushing (4), and one side of the limiting shaft (6) is rotatably connected to the inner wall of the bushing (4).

4. A seatbelt retractor according to claim 1, characterized in that: One side of the locking piece (13) is fixedly connected to a tension spring (14), and the other end of the tension spring (14) is fixedly connected to one side of the tension spring (14).

5. A seatbelt retractor according to claim 2, characterized in that: One side of the coil spring (10) is fixedly connected to the inner wall of one side of the outer casing (11), and one side of the locking piece (13) is in contact with the outside of the webbing (1).

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