Safety belt tensioner

Abstract

The invention provides a safety belt tensioner which comprises a shell, a mounting hole is formed in the outer wall of the shell, a rotating shaft is rotatably connected to the interior of the mounting hole, a safety belt body is arranged on the outer wall of the rotating shaft, a positioning hole is formed in the safety belt body, a friction structure is arranged in the shell, and the friction structure is arranged in the shell. And a connecting groove is formed in the middle of the outer wall of the shell. The safety belt is reasonable in design, by arranging the limiting structure capable of moving downwards, the limiting structure is clamped with the positioning hole in the safety belt body, so that the safety belt at multiple positions can be fixed, meanwhile, the friction structure is pushed to move outwards in the downward moving process of the limiting structure, and the friction effect is improved. And the friction structure and the rotating shaft are matched with each other to secondarily clamp the safety belt body, so that the safety belt can be tensioned and fixed.

Description

Technical Field

[0001] The invention mainly relates to the field of seat belts, and in particular to a seat belt tensioner. Background Art

[0002] Seat belts are safety parts used in equipment. They are used to ensure safety when riding in aircraft or other aircraft, or when working at high altitudes or performing skills. The main raw materials are polyester, polypropylene, and nylon. Seat belts do not only refer to webbings. In addition to webbings, seat belts are assembled from other parts. The seat belt tensioner is used to fix the seat belt.

[0003] The inventor discovered the following defects during the operation of the specific embodiment: "202223090180.6" discloses a seat belt tensioner, but when the three-point seat belt is fixed by the tensioner, three mounting strips are inserted into the interior of the tensioner, and the seat belt and the tensioner need to be fixed by three connecting devices, which makes it more cumbersome to fix the seat belt by the tensioner.

[0004] It should be noted that the above contents belong to the technical cognition scope of the inventor. Since the technical contents in this field are vast and too complicated, the above contents of this application do not necessarily constitute prior art. Summary of the invention

[0005] 1. Technical problem to be solved by the invention: The present invention provides a seat belt tensioner to solve the technical problems existing in the above-mentioned background technology.

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

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

[0008] Furthermore, the fitting ring is arranged in an arc shape, the number of the fitting rings is arranged in three, and the three fitting rings are arranged in an annular array inside the shell.

[0009] Furthermore, the limiting structure includes a lifting ring, a threaded hole is opened in the middle of the lifting ring, the threaded hole cooperates with the transmission screw, a bracket bar is arranged on the top of the lifting ring, and a push bar is arranged on the outer wall of the bracket bar.

[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 on the top of the bracket bar, an insertion rod is provided at the bottom of one end of the auxiliary frame, sliding grooves are provided on both sides of the outer wall of the insertion rod, the internal rotation of the sliding groove is connected to a limit strip, and 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 the present invention has the following beneficial effects: The present invention provides a limiting structure that can move downward, so that the limiting structure engages with the positioning hole inside the safety belt body, thereby fixing the safety belt in multiple positions. At the same time, the limiting structure will also push the friction structure to move outward during the downward movement, so that the friction structure and the rotating shaft cooperate with each other to perform secondary clamping on the safety belt body, thereby tightening and fixing the safety belt. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 3 It is a schematic cross-sectional view of the present invention; Figure 4 It is a schematic diagram of the three-dimensional structure of the limiting structure of the present invention.

[0014] Reference numerals: 1. Shell; 2. Mounting hole; 3. Rotating axis; 4. Safety 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 bar; 1204. Push bar; 1205. Auxiliary frame; 1206. Insert rod; 1207. Slide groove; 1208. Limiting bar; 1209. Spring telescopic rod. DETAILED DESCRIPTION

[0015] To facilitate understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. Several embodiments of the present invention are shown in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0016] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "page", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0017] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0018] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed", "provided with", "provided on" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. Example

[0019] See attached Figure 1-4A seat belt tensioner comprises a housing 1, a mounting hole 2 is provided on the outer wall of the housing 1, a rotating shaft 3 is rotatably connected to the inside of the mounting hole 2, a seat belt body 4 is provided on the outer wall of the rotating shaft 3, a positioning hole 5 is provided on the inside of the seat belt body 4, a friction structure is provided on the inside of 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 to the inside of the housing 1, and a limiting structure 12 is provided 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 interior of 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 the outer wall of the seat belt body 4 to fix the seat belt body 4 for a second time.

[0020] Furthermore, the friction structure includes a fitting ring 6 that is slidably connected with the 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 shell 1, the fitting ring 6 is arranged in an arc shape, the number of the fitting rings 6 is set to three, and the three fitting rings 6 are arranged in a circular array inside the shell 1. When the bracket bar 1203 moves downward, the bracket bar 1203 drives the push bar 1204 of 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, and then the safety belt body 4 between the push rod 7 and the rotating shaft 3 is squeezed by the push rod 7 and the safety belt body 4, and the safety belt body 4 is fixed for a second time.

[0021] Further, 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 bar 1203 is provided on the top of the lifting ring 1201, the support bar 1203, the outer wall of the support bar 1203 is provided with a push bar 1204, the push bar 1204 is slidably connected to the auxiliary ring 9, the push bar 1204 is inclined, an auxiliary frame 1205 is provided on the top of the support bar 1203, a plug rod 1206 is provided at the bottom of one end of the auxiliary frame 1205, and sliding The inner rotation connection of the slide slot 1207 is a limit strip 1208, and a spring telescopic rod 1209 is arranged between the limit strip 1208 and the insertion rod 1206. When the safety belt body 4 needs to be fixed by the safety belt tensioner, the safety belt body 4 is first passed through the rotating shaft 3 to adjust the position of the safety belt body 4. After the adjustment is completed, the transmission screw 11 is manually rotated, and the transmission screw 11 drives the lifting ring 1201 to move downward, and the lifting ring 1201 drives the bracket bar 1203 to move downward, and the bracket bar 1203 drives the auxiliary frame 1205 to move downward, and the auxiliary frame 1205 drives the insertion rod 1206 to be inserted into the interior of the positioning hole 5; The positioning hole 5 squeezes the limit strip 1208, causing the limit strip 1208 to rotate and squeeze the spring telescopic rod 1209. After the limit strip 1208 completely passes through the positioning hole 5, the spring telescopic rod 1209 pushes the limit strip 1208 to reset, causing one end of the limit strip 1208 to fit against the outer wall of the seat belt body 4 to achieve limiting. The three inserted rods 1206 can fix the three seat belt bodies 4 at the same time.

[0022] The above-described embodiments only express a certain implementation mode of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the patent scope of the present invention. It should be pointed out that, for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be based on the attached claims.

Claims

1. A seat belt tensioner, characterized in that: include A shell (1), wherein an outer wall of the shell (1) is provided with a mounting hole (2), a rotating shaft (3) is rotatably connected inside the mounting 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 shell (1), a connecting groove (10) is provided in the middle of the outer wall of the shell (1), a transmission screw (11) is rotatably connected inside the shell (1), and a limiting structure (12) is provided on the outer wall of the transmission screw (11); The safety belt body (4) is passed through the rotating shaft (3), and then the transmission screw (11) is manually rotated. The transmission screw (11) drives the limiting structure (12) to move downward and insert into the interior of the positioning hole (5) to fix the safety belt body (4). At the same time, the limiting structure (12) pushes the friction structure to move outward and fit with the outer wall of the safety belt body (4) to perform secondary fixation on the safety belt body (4).

2. A seat belt tensioner according to claim 1, characterized in that: The friction structure comprises 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); and a spring push rod (8) is provided between the push rod (7) and the housing (1).

3. A seat belt tensioner according to claim 1, characterized in that: The fitting ring (6) is arranged in an arc shape, the number of the fitting rings (6) is arranged in three, and the three fitting rings (6) are arranged in a circular array inside the housing (1).

4. A seat belt tensioner according to claim 1, characterized in that: The limiting structure (12) comprises 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 bar (1203) is provided at the top of the lifting ring (1201), and a push bar (1204) is provided on the outer wall of the support bar (1203).

5. A seat belt tensioner according to claim 4, characterized in that: The pushing bar (1204) is slidably connected to the auxiliary ring (9), and the pushing bar (1204) is arranged to be inclined.

6. A seat belt tensioner according to claim 4, characterized in that: An auxiliary frame (1205) is arranged on the top of the support bar (1203), an insertion rod (1206) is arranged on the bottom of one end of the auxiliary frame (1205), sliding grooves (1207) are arranged on both sides of the outer wall of the insertion rod (1206), the interior of the sliding groove (1207) is rotatably connected to a limit strip (1208), and a spring telescopic rod (1209) is arranged between the limit strip (1208) and the insertion rod (1206).

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