Dynamic locking tongue structure of anti-falling safety belt

Abstract

This utility model relates to the field of safety protection equipment, and more particularly to a dynamic locking tongue structure for a fall arrest safety belt. It includes a housing and a second roller. The second roller is housed within the housing, and fixed blocks are provided at both its upper and lower ends. Multiple protrusions are fixedly connected to the edges of the fixed blocks, and mounting grooves are provided between the protrusions. A caliper is installed within the mounting groove, and the caliper is connected to the mounting groove via a torsion spring. This device utilizes a centrifugal force-driven structure for the caliper to automatically extend and engage with the stop blocks, and a knob for manual control of the rotating column. This achieves automatic locking upon a fall and convenient unlocking after the danger has passed, solving the problem of existing devices lacking automatic emergency locking and simple manual unlocking functions.

Description

Technical Field

[0001] This utility model relates to the field of safety protection equipment, and in particular to a dynamic locking tongue structure for a fall-prevention safety belt. Background Technology

[0002] In activities such as working at heights and rock climbing, fall arrestor belts are crucial equipment for ensuring personnel safety. Existing safety belt locking mechanisms are mostly static or require manual operation, failing to respond quickly and lock in time during a sudden fall, posing a safety hazard. While some automatic locking mechanisms can achieve emergency locking to a certain extent, their poor design results in poor locking stability, and the unlocking operation is complex, affecting subsequent use. Furthermore, existing structures experience significant friction during belt extension and retraction, easily causing belt wear and shortening its lifespan. With increasingly stringent safety requirements, there is an urgent need for a dynamic locking mechanism for fall arrestor belts that can quickly and automatically lock and unlock during a fall, while also possessing good durability, to meet the safety needs of practical applications.

[0003] A search revealed patent publication number CN203196166U, which discloses a fall-prevention safety belt for pole work, consisting of a safety belt and a fall-prevention device. It is an upgraded product of the safety belt for high-altitude pole work. The safety belt section of this invention features a seamless design with no joints in the middle of each strap, is entirely sewn together without rivets, and has a more rational design. The fall-prevention device consists of a fall-prevention pole strap and a tightening rope. In the event of a worker falling from a height, the tightening rope tightens the fall-prevention pole strap, securing it firmly to the pole and preventing falls.

[0004] While existing technologies can achieve a certain degree of fall-stopping effect, they suffer from the following drawbacks: they lack automatic emergency locking and simple manual unlocking functions. In view of this, we propose a dynamic locking tongue structure for fall-stopping safety belts, which solves the above problems. Utility Model Content

[0005] The purpose of this invention is to address the problems existing in the background technology by proposing a dynamic locking tongue structure for fall-prevention safety belts.

[0006] The technical solution of this utility model is as follows: A dynamic locking tongue structure for a fall-prevention safety belt includes a housing and a second roller. The housing contains the second roller, and both the upper and lower ends of the second roller are provided with fixing blocks. Multiple protrusions are fixedly connected to the edges of the fixing blocks, and mounting grooves are provided between the protrusions. A caliper is provided in the mounting groove, and the caliper is connected to the mounting groove by a torsion spring. The torsion spring prevents the caliper from deflecting accidentally, keeping the caliper initially positioned in the mounting groove. After the caliper rotates, its length is sufficient to extend beyond the second roller.

[0007] When using the dynamic locking tongue structure of the fall arrestor safety belt in this solution, it is fixedly connected to the external equipment through the first buckle and the second buckle. When a fall occurs, the belt is pulled out, and the second roller rotates rapidly. At this time, the caliper receives a large centrifugal force and overcomes the elastic force of the torsion spring, rotating and extending out of the second roller. When the extended caliper rotates to the right angle side of the stop, it is blocked, thereby locking the rotation of the second roller and preventing the belt from being released. The above-mentioned locking structure is provided at both the upper and lower ends of the second roller to prevent excessive force on one side and improve the stability of the locking effect. When the situation is safe, after unlocking the tension of the belt, the second roller can be rotated by turning the knob at the upper end of the housing in the opposite direction. After the caliper leaves the stop, it returns to the mounting groove under the action of the torsion spring.

[0008] Preferably, a rotating column is fixedly connected inside the second roller, the rotating column is installed on the axis of the second roller, and a belt is fixedly connected to the second roller. The rotation of the rotating column can drive the second roller to rotate, thereby taking the belt on the second roller in and out.

[0009] Preferably, a knob is fixedly connected to the upper end of the rotating column. The knob is located on the outer wall of the upper end of the housing, and the knob can be manually rotated to rotate the second roller.

[0010] Preferably, the lower end of the rotating column is fixedly connected to the inner wall of the lower end of the housing via a bearing.

[0011] Preferably, the inner walls at both the upper and lower ends of the housing are provided with multiple blocks. One side of the block is a right angle and the other side is a bevel. After the caliper extends out of the second roller, it contacts and blocks the right angle of the block, while the bevel provides space for the caliper to retract.

[0012] Preferably, one end of the housing is provided with a take-up and release port, and two symmetrical first rollers are provided on the housing. The first rollers are connected to the inner wall of the housing through bearings. The first rollers are located between the housing and the take-up and release port. The belt passes between the two first rollers, and the friction force of the belt during take-up and release is reduced by rolling friction.

[0013] Preferably, the outer wall of the housing is fixedly connected with a first buckle and a second buckle, the second buckle is located on one side of the opening and closing port, and the first buckle is located on the opposite side of the opening and closing port. The first buckle and the second buckle provide external fixing points for the device.

[0014] Compared with existing technologies, the advantages of this utility model are:

[0015] I. This utility model adopts a centrifugal force driven caliper and stop block design. When a fall causes the second roller to rotate rapidly, the caliper overcomes the torsion spring force under the action of centrifugal force, rotates out of the mounting groove and extends out, and automatically locks after contacting the stop block. No manual intervention is required. It can respond to dangerous situations instantly and quickly stop the belt from being pulled out, providing timely and reliable safety protection for users and effectively avoiding injuries caused by falls.

[0016] Second, based on the first beneficial effect, a knob unlocking structure is set up. When the danger is over, the user can turn the knob at the top of the housing in the opposite direction to drive the rotating column and the second roller to reverse, so that the caliper disengages from the stop block and is reset and retracted into the mounting slot under the action of the torsion spring. The operation is simple and convenient, without the need for additional tools, which makes it easy for the user to quickly restore the seat belt to the normal use state, and to readjust and wear it again, thus improving the flexibility and convenience of seat belt use.

[0017] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0018] Figure 1 This is a first-person three-dimensional perspective schematic diagram of the present invention;

[0019] Figure 2 This is a two-dimensional perspective schematic diagram of the present invention.

[0020] Figure 3 This is a cross-sectional top view of the present invention.

[0021] Figure 4 This is an internal bottom view of the present invention;

[0022] Figure 5 This is a schematic diagram of the present invention.

[0023] Figure label:

[0024] 1. Knob; 2. Housing; 3. Retraction / Expansion port; 4. Strap; 5. First roller; 6. First buckle; 7. Second buckle; 8. Protrusion; 9. Stop block; 10. Rotating column; 11. Caliper; 12. Second roller; 13. Fixing block; 14. Mounting slot. Detailed Implementation

[0025] To make the above-mentioned objectives, features and advantages of this utility model more readily understood, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0026] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0027] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not adhering to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, actual manufacturing should include the three-dimensional spatial dimensions of length, width, and depth.

[0028] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0029] Example 1

[0030] Please see Figures 1-5 As shown, this embodiment is a dynamic locking tongue structure for a fall-prevention safety belt, including a housing 2 and a second roller 12. The housing 2 contains the second roller 12, and both the upper and lower ends of the second roller 12 are provided with fixing blocks 13. Multiple protrusions 8 are fixedly connected to the edges of the fixing blocks 13, and mounting grooves 14 are provided between the protrusions 8. A clamp 11 is provided in the mounting groove 14. The clamp 11 is connected to the mounting groove 14 through a torsion spring. In use, when a fall occurs and the second roller 12 rotates rapidly, the clamp 11 is subjected to centrifugal force to overcome the elastic force of the torsion spring, rotates out of the mounting groove 14 and extends out, and cooperates with the stop block 9 on the inner wall of the housing 2 to lock and prevent the belt 4 from being pulled out further.

[0031] Example 2

[0032] Please see Figures 1-5 As shown, this embodiment further includes, based on embodiment 1, a rotating column 10 fixedly connected inside the second roller 12, the rotating column 10 being installed on the axis of the second roller 12, and a belt 4 fixedly connected to the second roller 12. In use, the rotation of the rotating column 10 drives the second roller 12 to rotate synchronously, so that the belt 4 can be retracted and extended on the second roller 12, thereby adjusting the effective length of the safety belt.

[0033] A knob 1 is fixedly connected to the upper end of the rotating column 10. The knob 1 is located on the upper outer wall of the housing 2. In use, the rotating column 10 is rotated by manually rotating the knob 1, which in turn causes the second roller 12 to rotate synchronously, thereby realizing the operation of tightening and loosening the belt 4. This allows the user to adjust the tightness of the safety belt according to their own needs, ensuring that the safety belt is comfortable to wear and meets safety requirements.

[0034] The lower end of the rotating column 10 is fixedly connected to the inner wall of the lower end of the housing 2 through a bearing. During use, the bearing can effectively reduce the friction when the rotating column 10 rotates, ensure the smoothness of the rotation of the rotating column 10, make the operation of the knob 1 easier and less strenuous, reduce wear between parts, and extend the service life of the entire locking tongue structure.

[0035] Multiple stops 9 are provided on the inner walls of both the upper and lower ends of the housing 2. During use, when a fall causes the second roller 12 to rotate rapidly, the caliper 11 rotates out of the mounting groove 14 and extends out, contacting the stops 9 as the second roller 12 rotates. The stops 9 prevent the caliper 11 from continuing to rotate, thereby locking the second roller 12 and preventing the belt 4 from being pulled out further. When the danger has passed and the length of the belt 4 needs to be readjusted, the knob 1 is turned in the opposite direction to reverse the second roller 12, causing the caliper 11 to disengage from the stops 9 and return to the mounting groove 14 under the action of the torsion spring.

[0036] The housing 2 has a take-up / de-take-up opening 3 at one end, and two symmetrical first rollers 5 on the housing 2. The first rollers 5 are connected to the inner wall of the housing 2 through bearings. The first rollers 5 are located between the housing 2 and the take-up / de-take-up opening 3. In use, the belt 4 enters and exits through the take-up / de-take-up opening 3 and passes through the two first rollers 5. The first rollers 5 significantly reduce the friction of the belt 4 during the take-up and de-take-up process through rolling friction, making the belt 4 smoother during take-up and de-take-up, reducing wear on the surface of the belt 4, extending the service life of the belt 4, and reducing the risk of the belt 4 getting stuck due to excessive friction.

[0037] The outer wall of the housing 2 is fixedly connected with a first buckle 6 and a second buckle 7. The second buckle 7 is located on one side of the opening 3, and the first buckle 6 is located on the opposite side of the opening 3. In use, the locking tongue structure can be firmly fixed to external equipment, such as the fixing bracket of the safety belt or the connection point of the safety rope, through the first buckle 6 and the second buckle 7, ensuring that the locking tongue structure will not loosen or shift during use, providing reliable safety for the user. At the same time, this double buckle design can distribute the force on the fixing point, improving the stability and reliability of the overall structure.

[0038] Instructions for use: When in use, this device is fixedly connected to external equipment via the first buckle 6 and the second buckle 7. When a fall occurs, the strap 4 is pulled out, and the second roller 12 rotates rapidly. At this time, the clamp 11 receives a large centrifugal force and overcomes the elastic force of the torsion spring, rotating and extending out of the second roller 12. When the extended clamp 11 rotates to the right angle side of the stop block 9, it is blocked, thereby locking the rotation of the second roller 12 and preventing the strap 4 from being released. The second roller 12 is equipped with the above-mentioned locking structure at both the upper and lower ends to prevent excessive force on one side and improve the stability of the locking effect. When it is safe to release the tension of the strap 4, the second roller 12 can be rotated by rotating the knob 1 at the upper end of the housing 2 in the opposite direction. After the clamp 11 leaves the stop block 9, it resets and retracts into the mounting groove 14 under the action of the torsion spring.

[0039] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the 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 this utility model should be included within the protection scope of this utility model.

Claims

1. A dynamic locking tongue structure for a fall-prevention safety belt, comprising a housing (2) and a second roller (5), characterized in that: The housing (2) is provided with a second roller (5), and the second roller (5) is provided with fixing blocks (13) at both the upper and lower ends. Multiple protrusions (8) are fixedly connected to the edge of the fixing blocks (13), and mounting grooves (14) are provided between the protrusions (8). A caliper (11) is provided in the mounting groove (14), and the caliper (11) is connected to the mounting groove (14) by a torsion spring.

2. The dynamic locking tongue structure for a fall-prevention safety belt according to claim 1, characterized in that: A rotating column (10) is fixedly connected inside the second roller (5). The rotating column (10) is installed on the axis of the second roller (5). A belt (4) is fixedly connected to the second roller (5).

3. The dynamic locking tongue structure for a fall-prevention safety belt according to claim 2, characterized in that: A knob (1) is fixedly connected to the upper end of the rotating column (10), and the knob (1) is located on the upper outer wall of the housing (2).

4. The dynamic locking tongue structure for a fall-prevention safety belt according to claim 3, characterized in that: The lower end of the rotating column (10) is fixedly connected to the inner wall of the lower end of the housing (2) via a bearing.

5. The dynamic locking tongue structure for a fall-prevention safety belt according to claim 1, characterized in that: The inner walls of the upper and lower ends of the housing (2) are provided with multiple baffles (9).

6. The dynamic locking tongue structure for a fall-prevention safety belt according to claim 1, characterized in that: The housing (2) has a receiving port (3) at one end, and two symmetrical first rollers (12) are provided on the housing (2). The first rollers (12) are connected to the inner wall of the housing (2) through bearings. The first rollers (12) are located between the housing (2) and the receiving port (3).

7. The dynamic locking tongue structure for a fall-prevention safety belt according to claim 1, characterized in that: The outer wall of the housing (2) is fixedly connected with a first buckle (6) and a second buckle (7). The second buckle (7) is located on one side of the opening (3), and the first buckle (6) is located on the opposite side of the opening (3).

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