A seat belt tensioner

Abstract

The application provides a seat belt tensioner, which comprises a shell, an installation hole is formed in the outer wall of the shell, a rotating shaft is rotationally connected inside the installation hole, a seat belt body is arranged on the outer wall of the rotating shaft, a positioning hole is formed in the seat belt body, a friction structure is arranged inside the shell, and a connecting groove is formed in the middle of the outer wall of the shell. The seat belt body is fixed in multiple positions through the downwardly movable limiting structure, the friction structure is moved outward during the downward movement of the limiting structure, the friction structure and the rotating shaft are matched to clamp the seat belt body twice, and the seat belt is tensioned and fixed.

Description

Technical Field

[0001] This invention relates primarily to the field of seat belts, and more specifically to a seat belt tensioner. Background Technology

[0002] Safety belts are safety components used on equipment, such as airplanes, and are used to ensure safety when working at heights or performing acrobatic feats. The main raw materials are polyester, polypropylene, and nylon. Safety belts are not simply webbing; they are assembled from other parts besides webbing. The seat belt tensioner is used to secure the seat belt.

[0003] During the operation of specific embodiments, the inventors discovered the following defects: A seat belt tensioner is disclosed in "202223090180.6". However, when a three-point seat belt is fixed by the tensioner, three mounting strips are inserted into the tensioner. The seat belt and the tensioner need to be fixed by three connecting devices, which makes the process of fixing the seat belt by the tensioner quite cumbersome.

[0004] It should be noted that the above content falls within the scope of the inventor's technical knowledge. Due to the vast and complex nature of the technical content in this field, the above content of this application does not necessarily constitute prior art. Summary of the Invention

[0005] 1. The technical problem that the invention aims to solve: The present invention provides a seat belt tensioner to solve the technical problems existing in the background art.

[0006] 2. Technical Solution: To achieve the above objectives, the technical solution provided by the present invention is as follows: a seat belt tensioner, comprising a housing, an installation hole on the outer wall of the housing, a rotating shaft rotatably connected inside the installation hole, a seat belt body on the outer wall of the rotating shaft, a positioning hole inside the seat belt body, a friction structure inside the housing, a connecting groove in the middle of the outer wall of the housing, a transmission screw rotatably connected inside the housing, and a limit structure on the outer wall of the transmission screw; Pass the seat belt body through the rotating shaft, then manually rotate the transmission screw. The transmission screw drives the limiting structure to move downward and insert into the positioning hole to fix the seat belt body. At the same time, the limiting structure pushes the friction structure to move outward and fit against the outer wall of the seat belt body to fix the seat belt body a second time.

[0007] Furthermore, the friction structure includes a fitting ring slidably connected to a rotating shaft, a push rod provided on one side of the fitting ring, an auxiliary ring provided at one end of the push rod, and a spring push rod provided between the push rod and the housing.

[0008] Furthermore, the fitting ring is configured as an arc shape, and the number of the fitting rings is set to three, with the three fitting rings arranged in a ring array inside the housing.

[0009] Furthermore, the limiting structure includes a lifting ring with a threaded hole in the middle, the threaded hole cooperating with a transmission screw, a support strip on the top of the lifting ring, and a pusher strip on the outer wall of the support strip.

[0010] Furthermore, the push bar is slidably connected to the auxiliary ring, and the push bar is inclined.

[0011] Furthermore, an auxiliary frame is provided at the top of the support strip, and an insertion rod is provided at the bottom of one end of the auxiliary frame. Slide grooves are provided on both sides of the outer wall of the insertion rod, and a limit strip is rotatably connected inside the slide groove. A spring telescopic rod is provided between the limit strip and the insertion rod.

[0012] 3. Beneficial effects: Compared with the prior art, the technical solution provided by this invention has the following advantages: This invention utilizes a downward-moving limiting structure to engage with positioning holes inside the seat belt body, thereby securing the seat belt at multiple positions. Simultaneously, as the limiting structure moves downward, it also pushes the friction structure outward, causing the friction structure and the rotating shaft to cooperate in a secondary clamping of the seat belt body, thus tightening and securing the seat belt. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a three-dimensional structural diagram of the present invention; Figure 3 This is a schematic diagram of the front section of the present invention; Figure 4 This is a three-dimensional structural diagram of the limiting structure of the present invention.

[0014] Figure label: 1. Housing; 2. Mounting hole; 3. Rotating shaft; 4. Seat belt body; 5. Positioning hole; 6. Fitting ring; 7. Push rod; 8. Spring push rod; 9. Auxiliary ring; 10. Connecting groove; 11. Transmission screw; 12. Limiting structure; 1201. Lifting ring; 1202. Threaded hole; 1203. Bracket strip; 1204. Push strip; 1205. Auxiliary frame; 1206. Insert rod; 1207. Slide groove; 1208. Limiting strip; 1209. Spring telescopic rod. Detailed Implementation

[0015] To facilitate understanding of the present invention, a more complete description of the invention will be given below with reference to the accompanying drawings, which illustrate several embodiments of the invention. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of the invention will be more thorough and complete.

[0016] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "page," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0017] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0018] In this invention, unless otherwise explicitly specified and limited, the terms "installed," "connected," "linked," "fixed," "provided with," and "located in" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances. Example

[0019] See attached document Figure 1-4A seat belt tensioner includes a housing 1, an installation hole 2 on the outer wall of the housing 1, a rotating shaft 3 rotatably connected inside the installation hole 2, a seat belt body 4 on the outer wall of the rotating shaft 3, a positioning hole 5 inside the seat belt body 4, a friction structure inside the housing 1, a connecting groove 10 in the middle of the outer wall of the housing 1, a transmission screw 11 rotatably connected inside the housing 1, and a limit structure 12 on the outer wall of the transmission screw 11. Pass the seat belt body 4 through the rotating shaft 3, and then manually rotate the transmission screw 11. The transmission screw 11 drives the limiting structure 12 to move downward and insert into the positioning hole 5 to fix the seat belt body 4. At the same time, the limiting structure 12 pushes the friction structure to move outward and fit against the outer wall of the seat belt body 4 to fix the seat belt body 4 a second time.

[0020] Furthermore, the friction structure includes a fitting ring 6 slidably connected to a rotating shaft 3. A push rod 7 is provided on one side of the fitting ring 6, and an auxiliary ring 9 is provided at one end of the push rod 7. A spring push rod 8 is provided between the push rod 7 and the housing 1. The fitting ring 6 is arc-shaped, and the number of fitting rings 6 is set to three. The three fitting rings 6 are arranged in a ring array inside the housing 1. When the support bar 1203 moves downward, the support bar 1203 drives the push bar 1204 on the outer wall to move downward, so that the push bar 1204 pushes the push rod 7 outward through the auxiliary ring 9 and stretches the spring push rod 8. Then, the seat belt body 4 between the push rod 7 and the rotating shaft 3 is squeezed by the push rod 7 and the seat belt body 4, and the seat belt body 4 is fixed for a second time.

[0021] Furthermore, the limiting structure 12 includes a lifting ring 1201 with a threaded hole 1202 in the middle, which cooperates with the transmission screw 11. A support strip 1203 is provided at the top of the lifting ring 1201, and a pusher strip 1204 is provided on the outer wall of the support strip 1203. The pusher strip 1204 is slidably connected to the auxiliary ring 9 and is inclined. An auxiliary frame 1205 is provided at the top of the support strip 1203, and a rod 1206 is provided at the bottom of one end of the auxiliary frame 1205. Sliding rods are provided on both sides of the outer wall of the rod 1206. The groove 1207 has a rotatable connection to a limiting strip 1208 inside. A spring telescopic rod 1209 is provided between the limiting strip 1208 and the insertion rod 1206. When it is necessary to fix the seat belt body 4 by the seat belt tensioner, the seat belt body 4 is first passed through the rotating shaft 3 to adjust the position of the seat belt body 4. After the adjustment is completed, the transmission screw 11 is manually rotated. The transmission screw 11 drives the lifting ring 1201 to move downward. The lifting ring 1201 drives the support strip 1203 to move downward. The support strip 1203 drives the auxiliary frame 1205 to move downward. The auxiliary frame 1205 drives the insertion rod 1206 to be inserted into the positioning hole 5. The positioning hole 5 presses against the limiting strip 1208, causing the limiting strip 1208 to rotate and press against the spring telescopic rod 1209. After the limiting strip 1208 has completely passed through the positioning hole 5, the spring telescopic rod 1209 pushes the limiting strip 1208 back to its original position, so that one end of the limiting strip 1208 fits against the outer wall of the seat belt body 4, thereby achieving the limiting. The three set insert rods 1206 can fix the three seat belt bodies 4 at the same time.

[0022] The above-described embodiments are merely illustrative of certain implementations of the present invention, and are described in a relatively specific and detailed manner. However, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements are all within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the appended claims.

Claims

1. A seat belt tensioner characterized by: include The housing (1) has an installation hole (2) on its outer wall. A rotating shaft (3) is rotatably connected inside the installation hole (2). A safety belt body (4) is provided on the outer wall of the rotating shaft (3). A positioning hole (5) is provided inside the safety belt body (4). A friction structure is provided inside the housing (1). A connecting groove (10) is provided in the middle of the outer wall of the housing (1). A transmission screw (11) is rotatably connected inside the housing (1). A limit structure (12) is provided on the outer wall of the transmission screw (11). The friction structure includes a fitting ring (6) slidably connected to a rotating shaft (3), a push rod (7) is provided on one side of the fitting ring (6), an auxiliary ring (9) is provided at one end of the push rod (7), a spring push rod (8) is provided between the push rod (7) and the housing (1), the fitting ring (6) is arc-shaped, the number of the fitting rings (6) is set to three, and the three fitting rings (6) are arranged in a ring array inside the housing (1); The limiting structure (12) includes a lifting ring (1201), a threaded hole (1202) is provided in the middle of the lifting ring (1201), the threaded hole (1202) cooperates with the transmission screw (11), a support strip (1203) is provided on the top of the lifting ring (1201), a push strip (1204) is provided on the outer wall of the support strip (1203), the push strip (1204) is slidably connected to the auxiliary ring (9), and the push strip (1204) is inclined. Pass the seat belt body (4) through the rotating shaft (3), and then manually rotate the transmission screw (11). The transmission screw (11) drives the limiting structure (12) to move downward and insert into the positioning hole (5) to fix the seat belt body (4). At the same time, the limiting structure (12) pushes the friction structure to move outward and fits against the outer wall of the seat belt body (4) to fix the seat belt body (4) a second time.

2. A seatbelt tensioner according to claim 1, characterized in that: An auxiliary frame (1205) is provided on the top of the support strip (1203). A plug rod (1206) is provided at the bottom of one end of the auxiliary frame (1205). Slide grooves (1207) are provided on both sides of the outer wall of the plug rod (1206). A limit strip (1208) is rotatably connected inside the slide groove (1207). A spring telescopic rod (1209) is provided between the limit strip (1208) and the plug rod (1206).

Images