TWM572768U - Fall arrester - Google Patents

Abstract

A fall arrester comprising: a bracket, a rotating member, a seat belt, a brake disc and a plurality of brake blocks, wherein the side of the bracket has a connecting hole and a plurality of stops at a central position; Attached to the bracket; the safety belt is wound around the rotating member; the brake disc has a linkage shaft, and the linkage shaft is coaxially connected to the rotating member through the connecting hole of the bracket; the number of the braking blocks is the same as the number of the stopping blocks The brake blocks are pivotally connected to the inner side surface of the brake disc. When the brake pads are in the locked position, the stop portions of each of the brake blocks are located at positions corresponding to the respective stops and are synchronously and respectively The stopper abuts to restrict rotation of the rotating member. Thereby, the force to which it is subjected is distributed evenly.

Description

Fall arrester

This creation is related to the anti-drop device; in particular, it is a fall arrester suitable for hanging work places.

According to the use of the anti-dropping device, it is used in the work of the high-altitude work to generate a braking effect when the person falls, so as to prevent the person from continuing to fall, thereby achieving the effect of ensuring the safety of the person.

The conventional fall arrester is mainly composed of a fixed body, a rotating body rotatably disposed on the fixed body, a belt body connected to the rotating body, and a plurality of brake blocks pivoted on the rotating body and A plurality of stops connected to the fixed body are formed. In use, the fixing body is used for connecting with a fixed object of the outside, and the belt system is used for tying the connection to a person working at height. When the person starts to fall, the belt body is pulled and driven by the person. The rotating body rotates abruptly, so that the brake block pivoted on the rotating body is subjected to centrifugal force, and is pivoted outwardly and hits against the stopper to block the block by the block. The rotating body can no longer rotate, and the belt body is prevented from being continuously pulled out, and the person can be pulled to prevent the person from continuing to fall.

However, in the above structure of the conventional fall arrester, the number of the stoppers is not the same as the number of the brake blocks, and the distance and angle between the stops and the distance and angle between the brake pads are also Inconsistent. When the person is unfortunately falling down, although the fall arrester starts to work, only one of the brake pads will first contact the corresponding position of the brake block, and the remaining brake blocks will not be combined with other stops. The contact abutment produces a locking effect, causing the force of the entire fall arrester to concentrate only on a single stop. As a result, the force of the single block or the brake block is too large, and it is easy to cause damage or even breakage, so that the fall arrester loses the original emergency locking effect, and cannot ensure the personnel. Safe.

In view of this, one of the aims of the present invention is to provide a fall arrester which can make the locking effect of all the brake blocks and all the stoppers synchronously, so as to evenly distribute the force to be subjected to the force.

Another object of the present invention is to provide a fall arrester which is capable of avoiding damage and prolonging the service life.

In order to achieve the above object, the fall arrester provided by the present invention comprises a bracket, a rotating member, a seat belt, a brake disc and a plurality of brake blocks, wherein one side of the bracket has a connecting hole at a central position. And a plurality of stops protruding from the periphery of the connecting hole, the distance between each block and the center of the connecting hole is the same, and the blocks are centered by the center of the connecting hole, and each two adjacent blocks The central angle between the blocks is also the same; the rotating member is rotatably pivoted on the bracket; the safety belt is wound around the outer peripheral surface of the rotating member, and the rotating member is rotated by the seat belt; The brake disc has a disc body and a linkage shaft protruding from a center position of the disc body, the linkage shaft passing through the connecting hole of the bracket and coaxially connected with the rotating member to rotate coaxially with the rotating member; The number of the brake blocks is the same as the number of the brake blocks, and each of the brake blocks has a body portion and a stop portion integrally connected with the body portion, and the body portions of the brake blocks are pivotally connected to the brake disk. On the disk, the brake pads are located in the connection a periphery of the shaft; wherein, when the brake disc rotates, each of the brake blocks is pivoted from a return position to a lock position, and each of the brake blocks is located at a lock position Located at a position corresponding to each of the stoppers and synchronously abutting each of the stoppers to restrict rotation of the rotating member.

The effect of the present invention is that by limiting the number of the plurality of blocks and the plurality of brake blocks to the same, each of the blocks of the brake block is located at a position corresponding to each of the blocks, so that the brake blocks can be synchronously The locking is locked against each of the stoppers to evenly distribute the force applied, thereby reducing the probability of damage, thereby prolonging the service life, and improving the accuracy and maximum bearing capacity during locking.

In order to explain the present invention more clearly, the following preferred embodiments are described in detail below with reference to the drawings. Referring to FIG. 1 to FIG. 5 , the fall arrester 100 of the preferred embodiment includes a housing 10 , a bracket 20 , a rotating component 30 , a safety belt 40 , a retracting device 50 , and a Brake disc 60, a plurality of brake pads 70, and a plurality of return springs 80, wherein:

Referring to FIG. 1 to FIG. 3, the outer casing 10 is formed by abutting and combining two casings 11.

The bracket 20 has a main frame body 21 and a lifting ring 22. The main frame body 21 has a first side plate 211, a second side plate 212 parallel to the first side plate 211 and a predetermined distance apart, and a top plate connected between the top end of the first side plate 211 and the top end of the second side plate 212. 213. The outer side surface of one of the first side plates 211 (ie, the side surface of the bracket defined in the present invention) is recessed with a plurality of hollow holes 214, and is integrally formed on the adjacent two side walls of each slot 214. A stopper 215 is protruded. In this embodiment, each of the stoppers 215 is curved and extended, and each of the stoppers 215 is integrally connected with two adjacent sidewalls of the slots 214.

The center of the first side plate 211 is inserted through a connecting hole 216. The two blocks 215 are located at the periphery of the connecting hole 216, and the distance between the center of each of the blocks 215 and 216 is the same. 215 is centered on the center of the connecting hole 216, and the central angle between each two adjacent blocks 215 is the same. In this embodiment, the number of the stoppers 215 is two, and the two stoppers 215 are located on the same virtual extension axis passing through the center of the connection hole 216 (refer to FIG. 4), and the central angle between the two stoppers 215 is 180. degree. The lifting ring 22 is rotatably coupled to the top plate 213 of the main frame body 21, and the second blocking block 215 is located on the same virtual extension surface P passing through the center of the connecting hole 216 and the rotation axis of the lifting ring 22 (refer to FIG. 2). The virtual extension axis i is located on the virtual extension plane P. The main frame body 21 is fixed inside the outer casing 10, and the lifting ring 22 protrudes from the top of the outer casing 10.

In this embodiment, each of the slots 214 includes a first portion 214a and a second portion 214b. Each of the stops 215 is connected to two sidewalls of each of the first portions 214a, and each of the second portions 214b The connecting hole 216 is closer to each of the first portions 214a.

More specifically, please refer to FIG. 2B and FIG. 3 , the second block 215 has the same structure, and each of the blocks 215 has a first side end 215 a and a second side end 215 b . Each of the first side edges 215a extends in an arc shape in a direction toward each of the second side ends 215b. The height of each of the stoppers 215 with respect to the outer side surface of the first side plate 211 is gradually reduced from the first side edge 215a to the second side edge 215b. In this embodiment, each of the stoppers 215 is curved and curved in a direction away from the brake disc 60. In other words, the direction in which the stopper 215 is bent between each of the first side end 215a and each of the second side ends 215b is opposite to an arc direction A, and the arc direction A is centered by the connecting hole 216. And each of the first side ends 215a of the block 215 is located in the arc direction A; each of the second side ends 215b and the first side ends 215a face different directions, and the second side of the upper block 215 The end 215b faces the top plate 213, and the second side end 215b of the lower block 215 faces downward.

As shown in FIG. 1 to FIG. 3 , the rotating member 30 is rotatably pivoted between the first side plate 211 and the second side plate 212 of the bracket 20 .

Referring to FIGS. 1 to 3, the seat belt 40 is wound around the outer circumferential surface of the rotating member 30. One end of the seat belt 40 is fixed to the rotating member 30, and the other end is passed out from the bottom of the outer casing 10, so that the rotating member 30 is rotated by the seat belt 40.

Referring to Figures 1 to 3, the retracting device 50 includes a casing 51 and a scroll spring (not shown). The casing 51 is connected to the outer side surface of the second side plate 212 of the bracket 20 and located inside the outer casing 10. The scroll spring is disposed in the casing 51, and the inner end of the scroll spring and the rotation The member 30 is coupled, and the outer end of the scroll spring is coupled to the casing 51 to generate a rotational preloading force for the rotating member 30 to be retracted by the scroll spring of the take-up device 50.

Referring to FIGS. 1 to 3, the brake disc 60 has a disc body 61 and a linkage shaft 62 projecting from a central position of the inner side surface of the disc body 61. The brake disc 60 is located inside the outer casing 10 and passes through the connecting hole 216 of the bracket 20 through the connecting shaft 216, and is coaxially connected with the rotating member 30 to rotate the brake disc 60 coaxially with the rotating member 30.

Referring to FIG. 1 to FIG. 3 , the number of the brake blocks 70 is the same as the number of the stoppers 215 . Each brake block 70 has a body portion 71 and a stop portion 72 connected to the body portion 71 . The body portion 71 is pivotally connected to the inner side surface of the disc body 61 of the brake disc 60 and faces the outer side surface of the first side plate 211 of the bracket 20 . The stopping portion 72 is located at the outer end of the body portion 71 . Each of the brake pads 70 is reciprocally pivotable between a return position (refer to FIG. 4) and a lock position (refer to FIG. 5). When each brake block 70 is in the locked position, each brake block 70 is located at a position corresponding to each of the stops, that is, the axis of the stop portion 72 of each brake block 70 to the linkage shaft 62 of the brake disk 60. The distance between each of the stops 215 and the center of the connecting hole 216 is the same, and the central angle between the blocking portions 72 of each two adjacent braking blocks 70 centering on the axis of the interlocking shaft 62 is also two phases. The central angles between adjacent blocks 215 are the same. In the present embodiment, the line connecting the stopper portions 72 of the two brake pads 70 passes through the center of the interlocking shaft 62, and the central angle between the stopper portions 72 is also 180 degrees. When the brake pads 70 are pivoted and deployed to the locked position, each of the blocking portions 72 abuts against the first side end 215a of the stopper 215 along the arc direction A.

Referring to FIG. 1 to FIG. 4, the return springs 80 are respectively connected between one side of the stopping portion 72 of each brake block 70 and the disk body 61 of the brake disk 60 for each of the braking blocks. 70 generates an elastic pre-tension that is pulled back to the return position, so that each of the brake blocks 60 is normally maintained at the return position without being subjected to other external forces.

Therefore, when the present creation is used, the lifting ring 22 of the bracket 20 is fixed to an external fixing object, and the safety belt 40 is tied and connected to a person who performs aerial work. When the person unfortunately occurs at the initial stage of the fall, the seat belt 40 is pulled out for a short length, and the rotating member 30 is rotated abruptly with the brake disc 60, so that each of the brake blocks 70 is subjected to the centrifugal force of the brake disc 60 being sharply rotated. Acting to overcome the elastic force of the return spring 80, and the stop portion 72 of the brake block 70 is outwardly pulled out to the locked position, so that the stop portion 72 of each brake block 70 and each stop 215 of the bracket 20 Abutting (as shown in FIG. 5), the rotation of the rotating member 30 and the brake disc 60 is prevented, so that the seat belt 40 is pulled out again, so as to prevent the person from continuing to fall.

In this creation, the number of the brake pads 70 is the same as the number of the stoppers 215, and the distance between the centers of each of the stoppers 215 and the connection holes 216 is the same, and the angle between each two adjacent stops 215 is also All are the same, even in the group of two or two stops 215 just on the same virtual extension axis passing through the center of the connection hole 216, and each brake block 70 is in the blocking position, each brake block 70 is blocked The distance between the center of the interlocking shaft 62 of the brake disc 60 is the same, and the angle between the stopping portions 72 of each two adjacent brake blocks 70 is the same, even with the two brake pads 70. A group is located exactly on the same virtual extension axis passing through the center of the linkage shaft 62. Therefore, when the stopping portion 72 of each brake block 70 is pulled outward to the locking position by the force generated by the rotation of the brake disk 60, the blocking portions 72 of the respective brake blocks 70 are simultaneously and synchronously Each of the stoppers 215 is in contact with each other to form a common lock, so that the force (the gravity of the person falling) of the artificial fall arrester 100 can be evenly distributed on each of the stoppers 215, thereby not only reducing the stoppers. 215 The probability of damage, in order to extend the service life, can greatly improve the accuracy and maximum load capacity of the lock.

In the above, the number of the stoppers 215 and the number of the brake blocks 70 are two, but not limited thereto, and may be three or more, and the distance between the centers of the stoppers 215 and the connection holes 216 is the same, and three More than one stop 215 is centered on the center of the connecting hole 216, and the central angle between each two adjacent blocks 215 of the blocks 215 is also the same. For example, when three blocks 215 are used, two adjacent blocks are used. The central angle between the blocks 215 is 120 degrees. The central angle between the stop portions 72 of the brake block 70 matches the central angle between the stops 215.

In addition, each of the stoppers 215 is curved and extended. Therefore, after each of the stoppers 215 is abutted against the braking block 70, the stress generated by the stoppers 215 is gradually transmitted through the curved surface. And dissipating to the other end to avoid excessive stress concentration and retention, and strengthening the connection between each of the stoppers 215 and the bracket 20 by connecting the two adjacent sidewalls of the stopper 215 and each of the slots 214. Bond strength to avoid cracks or breaks. In order to achieve the purpose of increasing the service life by dispersing the stress and reducing the damage of the parts. Since the direction in which the respective stoppers 215 are bent is opposite to the arc direction A when the respective brake pads 70 are moved, the stress generated by the impact is more dispersed. In addition, the height of each of the stoppers 215 relative to the outer side surface of the first side plate 211 is gradually reduced from the first side end 215a toward the second side end 215b, so that the stopper 215 is close to the first side end. The portion of 215a can withstand a large impact force, and the force that is gradually moved away from the first side end 215a is gradually smaller. Therefore, the height reduction can make the material less used without affecting the strength. Save on material costs.

The above is only a preferred embodiment of the present invention, and equivalent changes to the scope of the present application and the scope of the patent application are intended to be included in the scope of the present patent.

[This creation]

100‧‧‧ fall arrester

10‧‧‧ Shell

20‧‧‧ bracket

21‧‧‧Main frame

211‧‧‧First side panel

212‧‧‧Second side panel

213‧‧‧ top board

214‧‧‧ slots

214a‧‧‧ first

214b‧‧‧ second

215‧‧ ‧block

215a‧‧‧First side

215b‧‧‧Second side

216‧‧‧connection hole

22‧‧‧ rings

30‧‧‧Rotating parts

40‧‧‧Safety belt

50‧‧‧Retracting device

51‧‧‧Box

60‧‧‧ brake disc

61‧‧‧ dish

62‧‧‧ linkage axis

70‧‧‧ brake pads

71‧‧‧ Body

72‧‧‧stops

80‧‧‧Return spring

A‧‧‧Arc direction

i‧‧‧Virtual extension axis

P‧‧‧ virtual extension surface

1 is a perspective view of a fall arrester of a preferred embodiment of the present invention. 2A is an exploded perspective view of FIG. 1. Fig. 2B is a partially enlarged perspective view of Fig. 2A. Figure 3 is a partial enlarged view of a portion of the portion of Figure 1. Figure 4 is a schematic view showing the state of the brake block at the return position. Figure 5 is a schematic view showing the state of the brake block in the locked position.

Claims (9)

A fall arrester comprising: a bracket having a connecting hole at a central position on the side of the bracket and a plurality of stops protruding from the periphery of the connecting hole, each block being between the centers of the connecting holes The distances are the same, and the stops are centered on the center of the connecting hole, and the central angle between each two adjacent blocks is also the same; a rotating member is rotatably pivoted on the bracket; The belt is wound around the outer peripheral surface of the rotating member, and the rotating member is rotated by the seat belt; a brake disc having a disc body and a linking shaft protruding from a center position of the disc body, the linkage The shaft is passed through the connecting hole of the bracket, and is coaxially connected with the rotating member to rotate coaxially with the rotating member; a plurality of braking blocks, the number of the braking blocks being the same as the number of the stopping blocks, each of the braking blocks Each of the brake pads is pivotally connected to the disk body of the brake disc, and the brake pads are located on the outer periphery of the linkage shaft, wherein the brake pads are respectively connected to the body of the brake disc; When the brake disc rotates, it drives the system. The block is pivoted from a return position to a locked position, and each of the brake blocks is located at a position corresponding to each of the stops and synchronously abuts each of the stops when the brake block is in the locked position. To limit the rotation of the rotating member. The fall arrester of claim 1, wherein the number of the stops is two, and the two stops are located on the same virtual extension axis passing through the center of the connection hole. The fall arrester of claim 1, wherein the bracket has a main frame body and a lifting ring; the main frame body has a first side plate, a second side plate parallel to the first side plate and spaced apart by a predetermined distance, and a top plate connected between the top end of the first side panel and the top end of the second side panel, the stopper protruding from the side surface of the first side panel, the lifting ring being rotatably coupled to the top panel, and from the outer casing Extending from the top; the rotating member is pivotally connected between the first side plate and the second side plate; wherein the number of the two blocks is two, and the two blocks are located at a center of the connecting hole and an axis of rotation of the ring The same virtual extension surface. The fall arrester of claim 1, wherein each of the stops has a first side end and a second side end, each of the stops being from the first side end to the second side The side ends are curved and curved to extend; each of the brake blocks abuts against each of the first side ends in the locking position. The fall arrester of claim 4, wherein the height of each of the stops relative to the side is gradually reduced from the first side to the second side. The fall arrester of claim 4, wherein each of the stops extends in an arc shape away from the direction of the brake disc. The fall arrester of claim 4, wherein each of the stoppers pivots to the locking position in an arc direction; and each of the first sides The direction in which the respective blocks are bent between the end and the second side ends is opposite to the direction of the arc. The fall arrester of claim 4, wherein the side of the bracket is recessed with a plurality of slots, each of the brackets being connected to two adjacent sidewalls of each slot. The fall arrester of claim 8, wherein each of the slots includes a first portion and a second portion, wherein the blocks are connected to two side walls of each of the first portions, each of the second portions The brake disc is approached to each of the first portions.