A seat belt self-locking mechanism

Abstract

The utility model discloses a safety belt self locking mechanism, including base, rope disc, locking assembly, first eccentric wheel and second eccentric wheel, rope disc rotation is established on the base, and one end of safety rope is connected with rope disc, locking assembly sets up on the base and is connected with rope disc, first eccentric wheel and second eccentric wheel rotation are established on the base and have the unlocking state and the locked state, and the first eccentric wheel and the second eccentric wheel between the structure are out and pass the rope passageway, and the other end of safety rope is arranged in the pass the rope passageway, safety rope can be in the pass the rope passageway and is rolled up and is unreeled when the first eccentric wheel and the second eccentric wheel are in the unlocking state, or, safety rope can be locked in the pass the rope passageway when the first eccentric wheel and the second eccentric wheel are in the locked state, through above -mentioned structure can reduce the number of parts, and the processing difficulty is low, can pass the standardization production and reduce manufacturing cost, and it is more easy to realize batch application, and the assembly process is simpler, and the later maintenance is more convenient.

Description

Technical Field

[0001] This utility model relates to the field of power transmission and distribution technology, and in particular to a seat belt self-locking mechanism. Background Technology

[0002] In power transmission and distribution operations, high-altitude installations, and other scenarios, safety belt attachment devices are crucial equipment for ensuring the safety of workers. The reliability of its core component, the rope retraction mechanism, directly determines the protective effect. Currently, mainstream rope retraction mechanisms suffer from structural complexity. For example, Chinese Utility Model Patent 2023224385231 discloses a safety belt attachment device for substation main transformers. The rope locking structure used in this device consists of a fixed base, a rope locking seat, and ball bearings. The fixed base has complex abutment surfaces, and the rope locking seat has through holes. Locking and unlocking of the safety rope is achieved by the abutment surfaces engaging with the ball bearings. This rope locking structure is not only complex but also difficult to assemble, resulting in high production and assembly costs. Therefore, there is an urgent need for a self-locking safety belt mechanism to solve these problems. Utility Model Content

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a seat belt self-locking mechanism.

[0004] The technical solution adopted by one embodiment of this utility model to solve its technical problem is: a seat belt self-locking mechanism, including a base, a rope reel, a locking component, a first eccentric wheel and a second eccentric wheel; The rope reel is mounted on the base, and one end of the safety rope is connected to the rope reel. The locking component is mounted on the base and connected to the rope reel to limit the rotation of the rope reel; The first eccentric wheel and the second eccentric wheel are rotatably mounted on the base and have unlocked and locked states. A rope-threading channel is formed between the first eccentric wheel and the second eccentric wheel, and the other end of the safety rope is threaded through the rope-threading channel. The safety rope can be wound and unwound in the rope passage when the first and second eccentric pulleys are in the unlocked state, or the safety rope can be locked in the rope passage when the first and second eccentric pulleys are in the locked state.

[0005] As a preferred embodiment of the present invention, the base is provided with a first arc-shaped groove and a second arc-shaped groove. A first connecting rod passing through the first arc-shaped groove is provided on the first eccentric wheel, and a second connecting rod passing through the second arc-shaped groove is provided on the second eccentric wheel. The first eccentric wheel can enter a locked state when the first connecting rod is located at the beginning of the first arc-shaped groove and enter an unlocked state when the first connecting rod is located at the end of the first arc-shaped groove. The second eccentric wheel can enter a locked state when the second connecting rod is located at the beginning of the second arc-shaped groove and enter an unlocked state when the second connecting rod is located at the end of the second arc-shaped groove.

[0006] As a preferred embodiment of the present invention, a seat belt self-locking mechanism further includes a first retainer and a second retainer. One end of the first retainer is connected to the base and the other end is connected to the first connecting rod, so that the first connecting rod is held at the beginning of the first arc-shaped groove. One end of the second retainer is connected to the base and the other end is connected to the second connecting rod, so that the second connecting rod is held at the beginning of the first arc-shaped groove.

[0007] In one of the preferred embodiments of this utility model, the first retainer and / or the second retainer are configured as tension springs.

[0008] As one of the preferred embodiments of this utility model, the end of the first arc-shaped groove is provided with a first slot, the end of the second arc-shaped groove is provided with a second slot, the first eccentric wheel can enter the unlocked state when the first connecting rod is inserted into the first slot, and the second eccentric wheel can enter the unlocked state when the second connecting rod is inserted into the second slot.

[0009] As one of the preferred embodiments of this utility model, the locking assembly includes a ratchet and a pawl. The ratchet is connected to the rope reel, and the pawl is disposed on the base and engages with the ratchet.

[0010] As one of the preferred embodiments of this utility model, a plurality of locking teeth are provided on the opposite side of the first eccentric wheel and the second eccentric wheel, and the locking teeth are inclined away from the unwinding direction of the safety rope.

[0011] As one of the preferred embodiments of this utility model, a handwheel is provided on the rope reel.

[0012] The beneficial effects of this utility model are as follows: A self-locking mechanism for a safety belt includes a base, a rope reel, a locking component, a first eccentric wheel, and a second eccentric wheel. The rope reel is rotatably mounted on the base, and one end of the safety rope is connected to the rope reel. The locking component is mounted on the base and connected to the rope reel to restrict the rotation of the rope reel. The first and second eccentric wheels are rotatably mounted on the base and have unlocked and locked states. A rope-threading channel is formed between the first and second eccentric wheels, and the other end of the safety rope is threaded through the rope-threading channel. The safety rope can be wound and unwound within the rope-threading channel when the first and second eccentric wheels are in the unlocked state, or the safety rope can be locked within the rope-threading channel when the first and second eccentric wheels are in the locked state. The above structure reduces the number of parts, lowers the processing difficulty, reduces manufacturing costs through standardized production, facilitates mass production, simplifies the assembly process, and makes subsequent maintenance more convenient. Attached Figure Description

[0013] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a schematic diagram of a seatbelt self-locking mechanism; Figure 2 An exploded view of a seatbelt self-locking mechanism; Figure 3 This is a cross-sectional view of a seatbelt self-locking mechanism; Figure 4 for Figure 2 A magnified view of a portion of region A in the middle. Detailed Implementation

[0014] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0015] In the description of this utility model, "multiple" means two or more; "greater than," "less than," and "exceeding" are understood to exclude the stated number; "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly specifying the number of indicated technical features or their sequential relationship.

[0016] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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 utility model.

[0017] In this utility model, unless otherwise explicitly defined, the terms "setting," "installing," and "connecting" should be interpreted broadly. For example, they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to a fixed connection, a detachable connection, or an integral molding; they can refer to a mechanical connection; they can refer to the internal connection of two components or the interaction between two components. Those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0018] Reference Figures 1-4 This utility model provides a seat belt self-locking mechanism, including a base 10, a rope reel 20, a locking component 30, a first eccentric wheel 41, and a second eccentric wheel 42; The rope reel 20 is rotatably mounted on the base 10, and one end of the safety rope 50 is connected to the rope reel 20; The locking component 30 is disposed on the base 10 and connected to the rope reel 20 to limit the rotation of the rope reel 20; The first eccentric wheel 41 and the second eccentric wheel 42 are rotatably mounted on the base 10 and have an unlocked state and a locked state. A rope passage 43 is formed between the first eccentric wheel 41 and the second eccentric wheel 42, and the other end of the safety rope 50 is threaded through the rope passage 43. The safety rope 50 can be wound and unwound within the rope passage 43 when the first eccentric pulley 41 and the second eccentric pulley 42 are in the unlocked state, or the safety rope 50 can be locked within the rope passage 43 when the first eccentric pulley 41 and the second eccentric pulley 42 are in the locked state.

[0019] Reference Figures 1-4When unwinding the safety rope 50, first operate the first eccentric wheel 41 and the second eccentric wheel 42 to the unlocked state, so that the rope passage 43 is in the open state. Then pull the other end of the safety rope 50, so that the safety rope 50 is unwound from the rope reel 20 and slides outward along the rope passage 43 until it reaches the required length. At this time, operate the first eccentric wheel 41 and the second eccentric wheel 42 to the locked state. At this time, the first eccentric wheel 41 and the second eccentric wheel 42 move closer to each other, so that the rope passage 43 gradually narrows until it is closed. The safety rope 50 abuts and locks, which can limit the sliding of the safety rope 50 in the rope passage 43. When winding the safety rope 50, the first eccentric wheel 41 and the second eccentric wheel 42 are operated to the unlocked state. At this time, the first eccentric wheel 41 and the second eccentric wheel 42 move away from each other, causing the rope passage 43 to gradually expand. The first eccentric wheel 41 and the second eccentric wheel 42 are separated from the safety rope 50, and the safety rope 50 can be freely wound and unwound in the rope passage 43. Then, the rope reel 20 is rotated to make the safety rope 50 wound on the rope reel 20.

[0020] Reference Figures 1-4 In some embodiments, the base 10 is provided with a first arc-shaped groove 61 and a second arc-shaped groove 62. A first connecting rod 63 passing through the first arc-shaped groove 61 is provided on the first eccentric wheel 41, and a second connecting rod 64 passing through the second arc-shaped groove 62 is provided on the second eccentric wheel 42. The first eccentric wheel 41 can enter a locked state when the first connecting rod 63 is located at the beginning of the first arc-shaped groove 61 and enter an unlocked state when the first connecting rod 63 is located at the end of the first arc-shaped groove 61. The second eccentric wheel 42 can enter a locked state when the second connecting rod 64 is located at the beginning of the second arc-shaped groove 62 and enter an unlocked state when the second connecting rod 64 is located at the end of the second arc-shaped groove 62.

[0021] Specifically, the first arc-shaped groove 61 and the second arc-shaped groove 62 are arranged in a figure-eight shape on the base 10 and are located on both sides of the base 10. The upper ends of the first arc-shaped groove 61 and the upper ends of the second arc-shaped groove 62 are their respective starting points and are close to each other. The lower ends of the first arc-shaped groove 61 and the lower ends of the second arc-shaped groove 62 are their respective ending points and are far apart from each other. When the first connecting rod 63 and the second connecting rod 64 are moved to the ends of the first arc-shaped groove 61 and the second arc-shaped groove 62 respectively, the first eccentric wheel 41 and the second eccentric wheel 42 will be driven to move away from each other and enter the unlocked state. At this time, the rope channel 43 reaches its maximum. When the operation... When the first link 63 and the second link 64 move to the beginning of the first arc-shaped groove 61 and the beginning of the second arc-shaped groove 62 respectively, they will drive the first eccentric wheel 41 and the second eccentric wheel 42 to move closer to each other and enter a locked state. At this time, the rope passage 43 reaches its minimum. Furthermore, the end of the first arc-shaped groove 61 is provided with a first slot 65, and the end of the second arc-shaped groove 62 is provided with a second slot 66. The first eccentric wheel 41 can enter an unlocked state and remain in it when the first link 63 is inserted into the first slot 65, and the second eccentric wheel 42 can enter an unlocked state and remain in it when the second link 64 is inserted into the second slot 66.

[0022] Reference Figures 1-4 In some embodiments, a seat belt self-locking mechanism further includes a first retainer 71 and a second retainer 72. One end of the first retainer 71 is connected to the base 10 and the other end is connected to the first connecting rod 63, so that the first connecting rod 63 is held at the beginning of the first arc-shaped groove 61. One end of the second retainer 72 is connected to the base 10 and the other end is connected to the second connecting rod 64, so that the second connecting rod 64 is held at the beginning of the first arc-shaped groove 61. Preferably, the first retainer 71 and / or the second retainer 72 are configured as tension springs. By configuring tension springs, the first connecting rod 63 and the second connecting rod 64 are always at the beginning of the first arc-shaped groove 61 and the beginning of the second arc-shaped groove 62, that is, the first eccentric wheel 41 and the second eccentric wheel 42 are always in a locked state of being close to each other.

[0023] Reference Figures 1-4 In some embodiments, a plurality of locking teeth 80 are provided on the opposite side of the first eccentric wheel 41 and the second eccentric wheel 42. The locking teeth 80 are inclined away from the unwinding direction of the safety rope 50. Since the safety belt of the worker is suspended on the safety rope 50, it will pull the safety rope 50 forward to unwind. This setting can prevent the safety rope 50 from continuing to unwind when the first eccentric wheel 41 and the second eccentric wheel 42 are close to each other and in a locked state, thereby ensuring safety. However, it can be wound in the opposite direction, so that the safety rope 50 is in a taut state.

[0024] Reference Figures 1-4In some embodiments, the locking assembly 30 includes a ratchet 31 and a pawl 32, the ratchet 31 being connected to the rope reel 20, and the pawl 32 being disposed on the base 10 and engaging with the ratchet 31.

[0025] Reference Figures 1-4 In some embodiments, a handwheel 90 is provided on the rope reel 20.

[0026] The advantages of this utility model are: the above structure can reduce the number of parts, reduce the processing difficulty, reduce manufacturing costs through standardized production, make it easier to achieve mass application, and make the assembly process simpler and the later maintenance more convenient.

[0027] Of course, this utility model is not limited to the above-described embodiments. Those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of this utility model. All such equivalent modifications and substitutions are included within the scope defined by the claims of this application.

Claims

1. A seatbelt self-locking mechanism, characterized in that: It includes a base (10), a rope reel (20), a locking assembly (30), a first eccentric wheel (41), and a second eccentric wheel (42); The rope reel (20) is rotatably mounted on the base (10), and one end of the safety rope (50) is connected to the rope reel (20); The locking assembly (30) is disposed on the base (10) and connected to the rope reel (20) for limiting the rotation of the rope reel (20); The first eccentric wheel (41) and the second eccentric wheel (42) are rotatably mounted on the base (10) and have an unlocked state and a locked state. A rope passage (43) is formed between the first eccentric wheel (41) and the second eccentric wheel (42), and the other end of the safety rope (50) is threaded through the rope passage (43). The safety rope (50) can be wound and unwound in the rope channel (43) when the first eccentric wheel (41) and the second eccentric wheel (42) are in the unlocked state, or the safety rope (50) can be locked in the rope channel (43) when the first eccentric wheel (41) and the second eccentric wheel (42) are in the locked state.

2. The seat belt self-locking mechanism according to claim 1, characterized in that: The base (10) is provided with a first arc-shaped groove (61) and a second arc-shaped groove (62). The first eccentric wheel (41) is provided with a first connecting rod (63) passing through the first arc-shaped groove (61). The second eccentric wheel (42) is provided with a second connecting rod (64) passing through the second arc-shaped groove (62). The first eccentric wheel (41) can enter the locked state when the first connecting rod (63) is located at the beginning of the first arc-shaped groove (61) and enter the unlocked state when the first connecting rod (63) is located at the end of the first arc-shaped groove (61). The second eccentric wheel (42) can enter the locked state when the second connecting rod (64) is located at the beginning of the second arc-shaped groove (62) and enter the unlocked state when the second connecting rod (64) is located at the end of the second arc-shaped groove (62).

3. A seatbelt self-locking mechanism according to claim 2, characterized in that: It also includes a first retainer (71) and a second retainer (72), one end of the first retainer (71) being connected to the base (10) and the other end being connected to the first connecting rod (63) so that the first connecting rod (63) is held at the beginning of the first arcuate groove (61); one end of the second retainer (72) being connected to the base (10) and the other end being connected to the second connecting rod (64) so ​​that the second connecting rod (64) is held at the beginning of the first arcuate groove (61).

4. A seatbelt self-locking mechanism according to claim 3, characterized in that: The first retainer (71) and / or the second retainer (72) are configured as tension springs.

5. A seatbelt self-locking mechanism according to claim 2, characterized in that: The first arc-shaped groove (61) is provided with a first slot (65) at its end, and the second arc-shaped groove (62) is provided with a second slot (66) at its end. The first eccentric wheel (41) can enter the unlocked state when the first connecting rod (63) is inserted into the first slot (65), and the second eccentric wheel (42) can enter the unlocked state when the second connecting rod (64) is inserted into the second slot (66).

6. A seatbelt self-locking mechanism according to claim 1, characterized in that: The locking assembly (30) includes a ratchet (31) and a pawl (32). The ratchet (31) is connected to the rope reel (20), and the pawl (32) is disposed on the base (10) and engages with the ratchet (31).

7. A seatbelt self-locking mechanism according to claim 1, characterized in that: A plurality of locking teeth (80) are provided on the opposite side of the first eccentric wheel (41) and the second eccentric wheel (42), and the locking teeth (80) are inclined away from the unwinding direction of the safety rope (50).

8. A seatbelt self-locking mechanism according to claim 1, characterized in that: A handwheel (90) is provided on the rope reel (20).

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