TWI701060B - Safety switch - Google Patents

Abstract

A safety detent device includes a base, a sliding part, a first pushing part, a cord reel and a first emergency stop structure. The sliding part, the first pushing part, the cord reel and the first emergency stop structure are arranged on the base , The cord reel is used to wind up or release a rope body, the first pushing member provides a first pushing force to act on the sliding member, when the end of the rope body connected to the load receives an instant downward force greater than the first jack When the first pushing force of the pusher is applied, the emergency stop structure acts to stop the reel from releasing the rope body, which can cause the suspension in time when a person or object falls.

Description

Safety switch

The present invention relates to a safety detent device; in particular, it refers to a safety detent device to avoid falling.

In workplaces such as roofs, factories, elevators, construction sites, etc., in order to prevent the load from falling, the operator fixes one end of the rope to a safe and stable foundation, and the other end is connected to the load. When the load is moved from a high place When it is dropped carefully, it can prevent the load from falling directly and causing damage.

The load can be transported goods or workers. For example, workers working on construction sites have an increased risk of working with the height of the working position. Therefore, when working at high places, the workers are often equipped There is a safety anti-falling device, wherein one end of the safety anti-falling device is fixed on a stable support, and the other end is tied to the body of the worker, so as to ensure the personal safety of the worker.

Similar problems caused by falling may also occur at home, such as mobility problems or elderly people, between squatting stations or when going up and down stairs, due to insufficient mobility of the limbs or difficulty in supporting the body weight. Then there is a risk of sitting or falling, and the consequences will be personal safety concerns. For this reason, if there is a mechanism that can promptly stop the action when a person or thing falls, it will be able to avoid improper danger.

In view of this, the purpose of the present invention is to provide a safety detent device, which can promptly stop the action when a person or an object falls.

In order to achieve the above-mentioned object, a safety detent device provided by the present invention includes a base, a sliding member, a first pushing member, a cord reel and a first emergency stop structure, wherein the base includes two side plates, The two side plates are separated by a distance and each has a sliding groove; the sliding member can move between a first position and a second position along the sliding groove of the two side plates; the first pushing member provides a The first pushing force acts on the sliding member and keeps the sliding member moving to the first position; the reel includes a reel and a rope body, and the reel is rotatably arranged between the two side plates and used To retract or release the rope body, one end of the rope body goes around the sliding member and connects the load vertically downward; the first emergency stop structure includes a first actuating member and a first positioning member, the first The actuating member is connected to the sliding member, and the first positioning member is linked with the reel. When the rope body receives an instant downward force greater than the first pushing force of the first pushing member, the rope body pulls the sliding member The member moves from the first position to the second position, and the first actuating member and the first positioning member form a catch.

The effect of the present invention is that when one end of the rope body connected to the load receives an instant downward force which is greater than the first pushing force of the first pushing member, the first actuating member and the first positioning member form a catch, causing the The reel stops releasing the rope body, so that when the person or object connected to the rope body falls, it can stop the action in time at the moment of falling.

In order to explain the present invention more clearly, a few preferred embodiments are listed below in detail in conjunction with the drawings. Please refer to FIG. 1 to FIG. 4, which are the first preferred embodiment of the safety switch device 100 of the present invention. The safety switch device 100 includes a base 10, a sliding member 20, a first pushing member 30, and a cord reel. 40 and the first emergency stop structure.

The base 10 includes two side plates 12 and a steering member 14 separated by a distance. The two side plates 12 respectively have corresponding sliding grooves 12a. The base 10 further includes a fixed block 16 arranged outside the side plate 12 and fixed. The block 16 is also connected with a first protruding rod 18. The steering member 14 is a pulley in this embodiment, and the pulley is rotatably disposed between the two side plates 12 through a shaft.

In this embodiment, the sliding member 20 includes a sliding roller 22 and a shaft center 24. The shaft center 24 passes through the sliding roller 22 and has sliding grooves 12a at both ends, so that the sliding member 20 can be placed between the two side plates 12 Move along the sliding groove 12a between the first position P1 and the second position P2. Two ends of the shaft 24 of the sliding member 20 passing through the sliding groove 12 a are respectively connected to a guide block 26, and a second protruding rod 28 is connected to the guide block 26.

The first pushing member 30 is a compression spring in this embodiment. The two ends of the compression spring are respectively sleeved on the first protruding rod 18 and the second protruding rod 28. The compression spring generates a first ejector when the compressed energy is released. The thrust F1 acts on the guide block 26 so that the sliding member 20 maintains the movement to the first position P1.

The reel 40 includes a reel 42, a rope body 44, and a coil spring (not shown). The reel 42 is rotatably arranged between the two side plates 12 through a shaft, one end of the rope body 44 is fixed on the reel 42, and the coil spring is hidden inside the reel 42, and its rewinding force drives The winding wheel 42 rotates and winds up the rope body 44. The other end of the rope body 44 first bypasses the sliding roller 22, then bypasses the steering member 14 and then hangs downward to connect with a load. The load may be a person or an object. The steering member 14 is arranged on the reel 42 and the sliding roller 22. Below and located between the winding wheel 42 and the sliding roller 22.

The first emergency stop structure includes a first actuating member 52, a connecting member 54 and a first positioning member 56. The two ends of the first actuating member 52 respectively pass through the sliding groove 12a, and the connecting member 54 is arranged outside the sliding groove 12a and simultaneously The first actuating element 52 and the sliding roller 22 are connected, so the first actuating element 52 is connected to the sliding roller 22 via the connecting element 54. The first positioning member 56 is a ratchet wheel including a plurality of ratchet teeth 56 a, which is coaxially arranged with the reel 42 and can rotate coaxially, and a plurality of ratchet teeth 56 a of the ratchet are arranged on both sides of the reel 42.

The above is a description of the composition of the safety actuator 100 of the first preferred embodiment of the present invention. The operation method of the safety actuator 100 will be described in detail below.

3 and 4, when the rope 44 receives an instant downward force F greater than the first pushing force F1 provided by the first pushing member 30 to act on the sliding member 20, the rope 44 pulls the sliding roller 22 Then the compression spring of the first pushing member 30 is compressed. At this time, the sliding roller 22 moves from the first position P1 shown in FIG. 2 to the second position P2 shown in FIG. 3, and simultaneously drives the first actuating member 52 and the ratchet The ratchet teeth 56a form a catch, so the reel 42 rotating coaxially with the ratchet also stops rotating, and the reel 42 stops releasing the rope body 44.

In this embodiment, the safety lock device 100 is used for home protection. The base 10 is set above the area where the elderly at home is likely to fall, such as the bathroom, the bedroom, etc., and the rope 44 is connected to one end of the load and is connected to a mobile For the elderly with inconvenience, when the center of gravity of the elderly is unstable and falls, the rope body 44 will be pulled, so that the first actuating member 52 and the ratchet teeth 56a on the ratchet will form a contact, so that the reel 42 cannot rotate to release the rope body 44, so the elderly Stop falling. This way, you can prevent the old man from falling to the ground accidentally, causing the head or other parts of the body to be hit.

When the old man regains his grasp of the center of gravity and stands up, the downward force on the rope body 44 is less than the first pushing force F1. The compression spring of the first pushing member 30 releases its stored potential energy, pushing the sliding roller 22 toward the first At position P1, the sliding roller 22 drives the first actuating member 52 away from the ratchet teeth 56a of the first positioning member 56, so the reel 42 returns to a rotatable state, that is, when the elderly slowly moves to a position away from the base 10, it will Pull the rope body 44 to rotate the reel 42 and release the rope body 44. The rope body 44 bypasses the sliding roller 22 and drives the sliding roller 22 to rotate to release the rope body 44. On the contrary, when the old man moves to a position close to the base 10 At this time, the rope body 44 will be loosened. At this time, the reel 42 rotates and winds the rope body 44 by the rewinding force of the coil spring, so that the rope body 44 is maintained in a tensioned state.

The sliding roller 22 and the wheel body of the steering member 14 in the above embodiment are formed with a ring-shaped recessed limit groove 22a and a limit groove 14a, which can be used for the rope body 44 to be arranged therein and to limit the rope body 44 in the limit position. The groove 22a and the limiting groove 14a are moved in order to prevent the rope body 44 from slipping off. In this embodiment, the base 10 further includes a limiting pulley 19, which is rotatably arranged between the two side plates 12 through a shaft and adjacent to Located on the steering member 14, a sliding space is formed between the surface of the limiting pulley 19 and the limiting groove 14a of the steering member 14. When the rope 44 passes through the sliding space, it will be confined therein, thereby avoiding the rope The body 44 slips off during the movement.

As shown in Figs. 5-9, the safety switch device 200 of the second preferred embodiment of the present invention is roughly the same in structure as the safety switch device 100 of the first preferred embodiment. The difference is that the safety switch The device 200 further includes a second emergency stop structure 60, a second pusher 70, a plurality of rollers 80 and a sleeve 82.

The second emergency stop structure 60 includes a second actuating member 61, a second positioning member 62 and a positioning rail 63. The second actuating member 61 is the guide block 26 in the above-mentioned embodiment and will not be repeated here. The second positioning member 62 includes a linkage rod 64 and a top rod 65. The linkage rod 64 is pivotally disposed on the base 10 through a pivot 64b. One end of the linkage rod 64 forms a first end 64a and is disposed on the sleeve. Inside 82, the other end passes through the side hole 82a of the sleeve 82 and abuts against the ejector rod 65. The ejector rod 65 is arranged in the sleeve 17 on the base 10 in a linearly displaceable manner. The ejector rod 65 forms a second end 65a at the end opposite to the connecting rod 64, whereby the connecting rod 64 can move with The jack 65 is linked and moves between the third position P3 and the fourth position P4. The positioning rail 63 has a rail 63a and a plurality of positioning holes 63b, and the plurality of positioning holes 63b are arranged along the longitudinal axis of the rail 63a.

A plurality of rollers 80 are rotatably arranged above the base 10 through their axles, and the rollers 80 can cooperate with the rail 63a to move in the rail 63a, whereby the roller 80 can drive the base 10 along the long axis of the rail 63a Move in direction. The sleeve 82 is a structure with an accommodating space inside, fixed to the base 10 and set above the guide block 26 when it is at the first position P1.

The second pushing member 70 is a compression spring, which is arranged in the accommodating space of the sleeve 82, one end of which abuts against the inner wall of the sleeve 82, and the other end abuts against the linkage rod 64, the compression spring is releasing the compression storage The second pushing force F2 is generated when it is able to act on the linkage rod 64, so that the sliding member 20 is maintained to move to the third position P3.

When the sliding member 20 is at the first position P1, the compression spring of the second pushing member 70 provides a second pushing force F2 on the linkage rod 64, so that the first end 64a of the linkage rod 64 abuts against the second actuator 61 and is located A third position P3. In this embodiment, the first end 64a of the linkage rod 64 indirectly abuts the second actuating member 61 through a steel ball 66, but it is not limited to this in other embodiments, such as the linkage The first end 64a of the rod 64 can also directly abut the second actuating member 61, or indirectly abut the second actuating member 61 through other members, when the sliding member 20 is located at the second position P2, as shown in FIGS. 7 and As shown in Figure 8, the compression spring of the second pushing member 70 releases its stored potential energy and pushes the linkage rod 64 downward to the fourth position. At this time, the end of the linkage rod 64 that abuts the jack 65 pivots upward and then The top rod 65 is driven to move upward, and the second end 65a of the top rod 65 is inserted into one of the positioning holes 63b on the rail 63a to form a latch with the positioning rail 63.

In this embodiment, the safety detent device 200 is installed above the stairs, and its load is an elderly person with limited mobility. With the positioning rail 63, the elderly can safely move freely within the range of the positioning rail 63. It can improve the problem of the limited range of movement of the conventional safety anti-fall device. When the elderly accidentally fall or fall, not only will the first actuating member 52 and the first positioning member 56 form a jam, the reel 42 cannot rotate the release rope At the same time, the body 44 is linked to insert the top rod 65 into the positioning hole 63b on the rail 63a to form a contact with the positioning rail 63, so that the base 10 cannot move relative to the positioning rail 63. Therefore, when the elderly trigger the safety detent device 200 to act, The old man is protected by the safety switch 200 and stops falling and stops moving.

In the above embodiment, the coil spring is hidden inside the reel 42. In other embodiments, the position of the coil spring is not limited to the position inside the reel 42. As shown in FIG. 10, the reel 40 It includes an adjusting member 67, a coil spring 68 and a shaft 69. The adjusting member 67 is detachably connected to the side plate 12 through a fixing member. One end of the coil spring 68 is fixed on the adjusting member 67, and the other end is fixed On the shaft 69, the shaft 69 and the reel 42 move simultaneously, so that when the user removes the fixing member, the adjusting member 67 can rotate relative to the side plate 12 along the axis of the shaft 69 Therefore, the user can rotate the adjustment member 67 to change the torque applied to the shaft 69 and the reel 42 by the coil spring 68. When the user rotates the adjustment member 67 to the desired adjustment position, the user can The fixing member is installed again, and the adjusting member 67 is fixed and positioned by the fixing member, and the torsion adjustment of the coil spring 68 is completed.

The above are only the preferred and feasible embodiments of the present invention. Any equivalent changes made by applying the specification of the present invention and the scope of the patent application should be included in the patent scope of the present invention.

[this invention] 100: Safety actuator 10: Pedestal 12: side panel 12a: Chute 14: Steering parts 14a: Limit slot 16: fixed block 17: sleeve 18: The first protruding rod 19: Limit pulley 20: Slider 22: sliding wheel 22a: Limit slot 24: axis 26: guide block 28: second protruding rod 30: The first pusher 40: Reel 42: reel 44: rope body 52: The first actuator 54: Connector 56: The first positioning piece 56av ratchet 200: Safety actuator 60: The second emergency stop structure 61: Second Actuator 62: The second positioning piece 63: positioning rail 63a: Orbit 63b: positioning hole 64: Linkage lever 64a: first end 64b: pivot 65: ejector 65a: second end 66: steel ball 67: adjustment parts 68: coil spring 69: Axle 70: The second pusher 80: Roller 82: sleeve 82a: side hole F: Instant downward force F1: First thrust P1: first position P2: second position F2: second thrust P3: third position P4: Fourth position

Figure 1 is a perspective view of the safety detent device of the first preferred embodiment of the present invention; Figure 2 is a bottom view of the safety actuator of the above preferred embodiment; Figure 3 is a schematic diagram of the safety detent device of the above preferred embodiment; Figure 4 is a schematic diagram of the safety detent device of the above preferred embodiment; Figure 5 is a schematic diagram of the safety detent device of the second preferred embodiment of the present invention; Figure 6 is a schematic diagram of the safety detent device of the above preferred embodiment; Figure 7 is a side view of Figure 6; Figure 8 is a schematic diagram of the safety detent device of the above preferred embodiment; Figure 9 is a side view of Figure 8. Figure 10 is a schematic diagram of some components of a safety detent device of a preferred embodiment of the present invention.

100: Safety actuator

10: Pedestal

12: side panel

12a: Chute

14: Steering parts

16: fixed block

18: The first protruding rod

19: Limit pulley

20: Slider

22: sliding wheel

22a: Limit slot

26: guide block

28: second protruding rod

30: The first pusher

40: Reel

42: reel

52: The first actuator

54: Connector

56: The first positioning piece

56a: ratchet

F1: First thrust

Claims (10)

A safety actuator, including: A base including two side plates, the two side plates are separated by a distance and each have a sliding groove; A sliding member which can move between a first position and a second position along the sliding groove of the two side plates; A first pushing member, providing a first pushing force to act on the sliding member, and keeping the sliding member moving to the first position; A reel includes a reel and a rope body, the reel system is rotatably arranged between the two side plates and used to wind up or release the rope body, one end of the rope body goes around the sliding part and Connect the load vertically downward; and A first emergency stop structure includes a first actuating member and a first positioning member, the first actuating member is connected to the sliding member, the first positioning member is linked with the reel, and when the rope body is instantly downward When the force of is greater than the first pushing force of the first pushing member, the rope body pulls the sliding member to move from the first position to the second position, and the first actuating member and the first positioning member form a contact . The safety actuator as described in claim 1, including: A second emergency stop structure includes a second actuating element, a second positioning element, and a positioning rail. The second actuating element is connected to the sliding element. The second positioning element can be positioned at a third position and a fourth position. It moves between positions and has a first end and a second end that are relatively and linked, wherein when the sliding member is located at the first position, the first end of the second positioning member abuts against the second actuating member and is located at the In the third position, when the sliding member is located at the second position, the second positioning member moves to the fourth position; and A second pushing member provides a second pushing force to act on the second positioning member, so that the second positioning member is maintained to move to the fourth position. When the sliding member moves to the second position, and the second positioning member When the positioning member moves from the third position to the fourth position, the second end of the second positioning member forms a catch with the positioning rail. According to the safety detent device according to claim 1, the base includes at least one steering member arranged between the two side plates, and the steering member is located below the sliding member and close to the reel. The safety detent device according to claim 3, wherein the steering member is a pulley, and the pulley has a limiting groove for confining the rope body in the limiting groove. The safety detent device according to claim 2, wherein the positioning rail has a rail and a plurality of positioning holes are arranged along the long axis of the rail, and the base includes a plurality of rollers that cooperate with the rail of the positioning rail. It can move along the long axis of the track, and the second end of the second positioning member can be inserted into one of the positioning holes to form a catch with the positioning rail. The safety locking device according to claim 5, wherein the second positioning member includes a linkage rod and a top rod that can be linked, the linkage rod is pivoted on the base, and the top rod is linearly movable Set on the base, one end of the linkage rod forms the first end, and one end of the jack rod forms the second end. The safety detent device according to claim 1, wherein the sliding member includes a sliding roller, when the rope body receives a downward force, the reel rotates and releases the rope body, and the rope body bypasses the sliding And drive the sliding roller to rotate. The safety detent device according to claim 7, wherein the sliding roller has a limit groove for confining the rope body in the limit groove. The safety detent device according to claim 1, wherein the first positioning member includes a ratchet wheel, and the ratchet wheel is arranged and rotated coaxially with the reel. The safety detent device according to claim 1, wherein the cord reel includes a coil spring.

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