CN2051988U

CN2051988U - Arbitrary stop and reverse-preventing device for hand winder

Info

Publication number: CN2051988U
Application number: CN 89207794
Authority: CN
Inventors: 邱友仁
Original assignee: Individual
Current assignee: Individual
Priority date: 1989-06-13
Filing date: 1989-06-13
Publication date: 1990-01-31

Abstract

The device of the utility model is composed of a handle, a handle cover, a gap pulley, a spring ring, a driving shaft, a driving gear with a convex block, etc. The device can be used for a hand winder; not only the utility model can make winded objects arbitrarily stop to the proper position in the process of receiving and spreading, but also the utility model can prevent the accident caused by the looseness of a rope or the inversion of a gear wheel in the process of receiving and spreading.

Description

Arbitrary stop and reverse-preventing device for hand winder

The utility model relates to a kind of shaking hoist and stops anti-kickback device arbitrarily.

In many occasions, as outdoor place or greenhouse, building balconies etc. such as tennis court, volleyball courts, all need to wait to hide with large-scale net, sunshade or canvas, expose to the sun and rain preventing.These cope areas are quite big, can't be with manually carrying out elevator, and its elevator operation is undertaken by the shaking hoist usually.The operation of at present traditional shaking hoist is to rotate a hand with extended arm handle with hand, drives driving gear, and then drives arm revolving gear and rope barrel rotation, draws, puts the purpose that reaches the volume, raises cope by cable wire on the reel.Because handgrip lever principle and gear transmission, so can reach the labour-saving effect during use, still, this traditional shaking hoist remains in following shortcoming:

(1) cable wire all can only be loosened or all around full, that is can only will be rolled fully by Roll Sushi or launch fully, when needs partly launch or are expanded to a certain suitable height, width with things such as net, canopy, canvas, need to fix with other external force, as utilize a claw-like anti-reverse device, cause the inconvenience in the use like this.

(2) initially be the labour-saving in operation, but owing to sizable weight is all arranged by the elevator thing, through cable wire, rope barrel, transmission gear, driving gear and pass to antagonistic force on the handgrip, (promptly reverse strength) is also quite big, if the careless hand of operator breaks away from handgrip, handgrip can reverse immediately, wounds the operator, causes accident.

This shows, at present traditional shaking volume sample is raised device and is used inconvenience and dangerous, therefore, main purpose of the present utility model is to overcome above-mentioned shortcoming, provide a kind of later-model shaking hoist to stop anti-kickback device arbitrarily, device of the present utility model can be easily with net, canopy, things such as canvas furl or open up and put, and can stop on certain fixed position arbitrarily, need to launch suitably height or area according to using, secondary objective of the present utility model provides a kind of novel shaking hoist and stops anti-kickback device arbitrarily, but the utmost point is the elevator net effortlessly, canopy, copes such as canvas, and can avoid the handgrip reversing to wound the operator, guarantee safety of operation.

For finishing above-mentioned purpose, the keystone configuration of the utility model device is that an imput shaft runs through front sleeve, the fixing center of elements such as cover, breach pulley, driving gear, back sleeve successively, until seat of honour right side.Fixedly cover is fixed on seat of honour left side, and a handgrip is connected on the main shaft, driving gear and transmission gear engagement.Be provided with an annular indent groove on the breach pulley, groove is embedded in a spring coil, and the projection of the breach of this breach pulley on just can chimeric driving gear, breach pulley are embedded in the inside casing of fixing cover.

The advantage of the utility model device be simple in structure, make easily and be easy to and install, can will be fixed on by the elevator thing on any appropriate location and unlikely landing, and can avoid handgrip to reverse fully because of being subjected to antagonistic force, guarantee safety of operation.

Fig. 1 is the section-drawing that the utility model is installed.

Figure 1A be among Fig. 1 A-A to view.

Fig. 2 is the main driver element exploded drawings of the utility model device.

Fig. 3 is the main driver element combination stereogram of the utility model device.

Fig. 4 is the subelement top view of the utility model device.

Fig. 5 is the top view of the spring coil in the utility model device when placing the breach pulley.

Fig. 6 is spring coil in the utility model device and the breach pulley top view when inserting fixing cover inside casing.

Fig. 7 is spring coil in this practical emerging device and the breach pulley cutaway view when inserting fixing cover inside casing.

Fig. 8 a represents the utility model device when normal running, the action scheme drawing of spring coil.

Fig. 8 b represents the action scheme drawing of the utility model device spring coil when being subjected to antagonistic force.

Below in conjunction with description of drawings structure of the present utility model and service condition.

At first referring to Fig. 1, bolt of rear end plate (21) is fixed on handgrip (1) the plane rod end of imput shaft (2), fixedly cover (3) is fixed on seat of honour left side (32) by big countersunk bolt (22), the breach pulley (5) that has spring coil (4) embeds fixedly inside casing (33) the school  saddle cloth  curtain of cover (3)) run through front sleeve (12), fixing cover (3), breach pulley (5), the central straight of driving gear (6) and back sleeve (13) is to seat of honour right side (31), transmission gear (8) meshes in driving gear (6), when driving gear (6) rotates, driving arm revolving gear (8) rotates, transmission gear (8) drives rope barrel (9) rotation again, thereby cable wire is rolled or loosened.

Fig. 2 represents the exploded drawings of the main driver element of this device, as seen from the figure, driving wheel (2) runs through breach pulley (5), spring coil (4) and has the center of the driving gear (6) of projection (7), by a little hook bolt (23) be positioned at the fixed orifice (52) of pulley (5) indentation, there, imput shaft (2) is fixed on the breach pulley (5).Breach pulley (5) is provided with annular indent groove (51), and spring coil (4) just is placed in this groove (51).The projection (7) of the indentation, there of breach pulley (5) and driving gear (6) is chimeric, and constitutes main running part as shown in Figure 3.

This running part matches with fixing cover (3), promptly constitutes the brake housing apparatus of similar automobile, can prevent driving gear (6) reversing.

Referring to Figure 1A, Fig. 2, Fig. 3, during operation, hold handle (11) application of force rotation of handgrip (1), this rotational force is passed to breach pulley (5) by driving wheel (2) rotates breach pulley (5) thereupon, drive driving gear (6) rotation by projection (7), driving gear (6) drives transmission gear (8) rotation, and transmission gear (8) drives cable wire tube (9) rotation, reaches the purpose of elevator cable wire.

Referring to Fig. 4 and Fig. 2, the inward at both ends bending of spring coil (4), form bending segment (41), the distance between this bending segment (41) and the breach pulley (5) greater than and projection (7) between distance, the distance of just finishing between folding section (41) and the projection (7) is very little.Antagonistic force is via cable wire, rope barrel (9), when transmission gear (8) passes to driving gear (6), make driving gear (6) and the stressed counter-rotating of projection (7), when projection (7) when any direction moves, can touch the bending segment (41) at spring coil (4) two ends, because the gap between projection (7) and the bending segment (41) is very little, the strength that projection moves will make bending segment (41) to extending out bullet, make spring coil (4) withstand the fixedly inside casing of cover (33) (see figure 3), the antagonistic force that projection (7) can't move thereby driving gear (6) is subjected to is decomposed, and is unlikely to reversing.In other words, place the spring coil (4) in breach pulley (5) the chase groove (51) to have the elastic force that expands outwardly, adopt just unlikely deviate from (as shown in Figure 5) because of its two bending segment (41) props up breach pulley (5).But because the elastic reaction of the outside support of spring coil (4) makes its circle body external diameter be slightly larger than the fixedly inside casing (33) of cover (3).After the breach pulley (5) of above-mentioned band spring coil (4) is threaded into inner frame (33), spring coil (4) is subjected to the restriction of inside casing (33) internal diameter, force two bending segments (41) that prop up breach pulley (5) originally to leave breach pulley (5), form a gap E(as shown in Figure 6).At this moment, the external diameter of spring coil (4) is close to inside casing (33), (as shown in Figure 7).

Referring to Fig. 8 a, when normal condition during with operating handle, driving wheel (2) rotates, at this moment breach pulley (5) touches projection (7) again with the bending segment (41) that A direction in scheming promotes spring coil (4), driving gear (6) is rotated, the bending segment (41) of spring coil (4) is owing to the power that is subjected to from the A direction, make spring coil (4) itself produce the trend of dwindling the circle footpath, (as shown in phantom in FIG.), thereby do not produce too big resistance with inside casing (33), and make breach pulley (5) to rotate, thereby drive driving gear (6), driven gear (8) and rope barrel (9) reach the purpose of elevator.

Referring to Fig. 8 b, when driving gear (6) is subjected to antagonistic force and promptly reverses external force, this reversing external force makes driving gear (6) reversing, projection (7) on the driving gear (6) forces spring coil (4) to produce the trend that enlarges the circle footpath with the bending segment (41) that B direction in scheming promotes spring coil (4), because original spring coil has been close in the inside casing (33), so the circle of spring coil directly enlarges the very big friction force of generation between rear spring circle and the inside casing, stop the reverse of breach pulley (5), also just avoided the reversing of handgrip.Same principle, net, canopy, canvas etc. can be stopped at desired location arbitrarily by the elevator thing.

Claims

1, a kind of shaking hoist stops anti-kickback device arbitrarily, it is characterized in that mainly by imput shaft run through front sleeve, fixedly cover, breach pulley, driving gear, afterwards sleeve the center and the seat of honour right side that arrives is formed, fixedly cover is fixed in seat of honour left side, on imput shaft, be connected with a handgrip, driving gear and transmission gear engagement.

2, shaking hoist as claimed in claim 1 stops anti-kickback device arbitrarily, it is characterized in that the chute that has an annular to concave on the breach pulley, groove is embedded with the spring coil of a two ends band bending segment, this breach pulley embeds the fixedly inside casing of cover, one projection is arranged on driving gear, and this projection embeds in the breach of breach pulley.