KR20200005434A - A clutch module for a hoist device and the hoist device using the same - Google Patents

Abstract

The purpose of the present invention is to provide a clutch module which can be easily fabricated in a compact size, uses inexpensive materials and thus is economical, and ensures reinforced braking and smooth operation, and a hoist device using the clutch module. The clutch module comprises: a manual pulley; a first clutch member provided as a wrap spring having an engaging portion integrally formed thereon; a clutch stator which has a first spring friction surface and is fixed to a bracket; a driving member including a first driving rotor for pushing a body of the wrap spring, which is a clutch member, in a direction that the same is widened when the manual pulley rotates, thereby releasing a friction braking force between the spring friction surface of the clutch stator and the inner diameter of the wrap spring, which is a clutch member, and then rotating the same; a pickup member for pushing the engaging portion of the clutch member in such a direction that the wrap spring body of the clutch member is narrowed when a rotational force is delivered from a power transfer portion of the hoist device, thereby increasing the friction braking force between the clutch stator and the clutch member; and a means for preventing interference between the driving member and the pickup member.

Description

A clutch module for a hoist device and the hoist device using the same}

The present invention relates to a clutch module and a hoist device to which braking and smooth operation are performed so as to be used for lifting or lowering of heavy materials while braking the lowering of the various hoist devices by lowering or rotating the winding members thereby. .

The hoist device, such as a variety of awnings, such as a clothes drying rack for tying one side end of a predetermined length to the support member and the other end to the winding member and then winding or recommending the tow line to lift or lower the laundry hanging on the support member. There is.

The shade, roll blind and awning device for shading and mining the end of one side of the screen having a predetermined width and height of the roll / combination / triple blind in the manner of winding up and down to the rod of the predetermined diameter as the winding member, The bottom of one side of the tow line is tied to the lowermost supporting member to walk or unfold the multiple slats, and the slats are rolled up by winding or lowering the one end of the upper end of the tow line inserted into the upper slat through the holes formed in the multiple slats. Venetian blinds that are pulled up or down to lighten and mined, or the bottom of one side of the tow line is tied to the support member provided at the bottom of the corrugated screen, and the one end of the top of the tow line is wound up or down on the take-up member. Honeycomb and pleated blobs with shading or mining by spreading or folding wrinkled screens There are bound like.

Generally, a sunshade, which is a type of hoist device installed indoors or outdoors, is disposed on a window frame to selectively perform light and light through a window, and includes a slat type and a screen type.

The slat type includes: i) venetian blinds with long slats arranged in the horizontal direction and vertically moving according to their structural characteristics, and selective mining, ii) vertical mining with the slats arranged vertically and flowing from side to side. And blinds, and iii) a louver type provided with a plurality of louvers provided to rotate at a fixed position and having an angle adjustment method.

Screen types include: i) roll blinds that are rolled up in a horizontally placed roll, which flows up and down to form selective light, and ii) honeycomb and pleated blinds, which are mined or shaded by folding or unfolding corrugated fabric. There is.

Such a awning is typically provided with a winding member that is securely fixed to the fixed member to be rotatable to any fixed member so that the traction line or the screen itself coupled to the support member can be wound or unwound, and the weight of the support member or a plurality of slats to the screen or a combination thereof It is formed or provided with a sieve, and the traction line or screen coupled thereto is provided to release (recommendation) from the winding member by gravity, and the traction line or screen is wound around the winding member by electric or manual power such as a motor (winding) It is operated by positioning at a specific intended height or rotating a predetermined angle. When electric power or manual power is not applied to the winding member, the winding member is lowered and rotated by the weight of the weight, When this is applied, it is possible to rotate the winding member. And a drive unit (commonly also referred to as "clutch") is essential.

Another type of hoist equipment that is installed indoors or outdoors is a laundry dryer, which is similar in principle to braking and driving compared to the above-described sunshade, so that electric power or manual power is not applied to the winding member. When not in use, a braking and driving device (hereinafter referred to as "clutch") which enables the winding member to be rotated down by the weight of the weight body and enables the rotational driving of the winding member when power is applied is essential.

In addition, there are various hoist devices, but the configuration and operation relations are similar, and the facts thereof will be apparent to those skilled in the art, and thus descriptions of other hoist devices will be omitted.

Hereinafter, in the present specification, a braking and driving device that enables the rotation of the winding member when the power is applied while braking the winding of the winding member of the hoist device as described above is called "braking and driving clutch for the hoist device". More specifically, referred to as "clutch", the shading device will be described as a representative background art in order to explain the present invention in detail to those skilled in the art.

For example, FIGS. 1A and 1B are a perspective view and an exploded perspective view, respectively, of a typical representative roll awning, and FIG. 1C is a perspective view of a combination blind, which is a kind of roll awning using two layers, and FIG. 1D is assembled in one configuration to the roll awning. A perspective view of a plastic bracket, which is a kind of various brackets.

In addition, Figure 2a is an exploded perspective view showing a conventional roll awning clutch, Figure 2b is an example of a variety of roll awning clutch, Figure 2c is an exploded perspective view of the real picture clutch shown in Figure 2b, Figure 2d 3 is an exploded perspective view of a reduction roll sunshade clutch to which a conventional planetary gear is applied, and FIG. 3 is a cross-sectional view of a conventional sprinkler clutch.

First, as illustrated in FIGS. 1A to 2D, a typical roll shade includes a head rail 10 installed above a window frame; Each one of the head rails 10 is provided in pairs, one of which has a hollow formed in the center of the body, and further includes a rotatable 52 which freely rotates when mounted, and each of the locking jaws 51b is provided. A stopper 50 formed on a pair of brackets 51 formed on an outer circumference and having mounting means 51 a having a through hole 51 c therein; And a round bar 22 disposed at a lower side of the head rail 10 and having an upper side supported by a round bar 22 which is a kind of a winding member being rotatably supported. Is done.

One side of the screen 20, the wedge 21 is coupled so that one side is inserted into the slot formed in the round bar, the wedge is inserted into the slot, the screen is assembled to the round bar 22.

Then, when the round bar 22 is rotatably mounted between the head rail 10 and the stopper 50 by external force or gravity, the blind fabric is wound or unrolled.

The bottom of the screen 20 is finished with the bottom bar (30).

On the other hand, as a clutch for braking the winding of the winding member downward and at the same time enabling rotation of the winding member when power is applied, a spring clutch 400 using a wrap spring is generally used. The body of the constituting the clutch stator 401 in a stationary state (see Fig. 2a).

One end (left side of FIG. 1B) of the spring clutch 400 includes a clutch stator 401 having a mounting hole 401c having an arm engaging groove 401d (see right side of FIG. 2B).

At the same time, the stopper 50 has a protruding bracket 51 having a mounting means 51a and a locking jaw 51b (see FIG. 1D).

Thus, the mounting hole 401c is fitted to the mounting means 51a of the bracket 51 (the left bracket of FIG. 1B) without the rotor 52 among the brackets 51 of the both stoppers 50. The arm catching groove 401d is caught by the catching jaw 51b, so that the clutch stator 401, which is the body of the spring clutch 400, is prevented from freely rotating by the bracket 51 of the stopper 50. do.

The pickup member (404 in FIG. 2A) at the other end (right side in FIG. 1B) of the spring clutch 400 is inserted into the round bar 22 (see FIG. 1B), and the round bar 22 is the screen 20. Support rotatably.

At the same time, the spring clutch 400 further includes a clutch member 402 and a driving member 403, which are transmitted from the movable line 60 by external force by manual force by a human hand or by a screen (by gravity). The external force from the round bar 22 to be rotated is braked by the self load of the blind fabric of 20).

Since the roll shade and the spring clutch 400 are directly related to the present invention, the technical background will be described in detail to those skilled in the art through the technical background.

First, the main defects and A / S of the sunshade, which are very important problems for the relevant industry and those skilled in the business, can be divided into two areas. It is a major factor, and in the post-sales phase, most of them occur because of the failure of the bracket 51 and the spring clutch 400, which are the mounting means, and the related industry and those skilled in the art are particularly concerned with the failure of the phase of use, which is the main cause of after-sales service It is sensitive because it incurs additional costs.

The two biggest problems with the quality of these shades are:

First, one problem is that the bracket 51 mainly generated in the case of a plastic material falls without being able to overcome the force, and the catching jaw 51b mainly generated in the case of a metal material is bent without a load.

However, the second, and more serious, problem is that the noise generated from the spring clutch 400, the tightness, the blind fabric does not perform the first good braking over time, the blind fabric falls and the fabric rises or Falling winding is not smooth, the main reason is due to the structural problems of the spring clutch 400, which is the problem to be solved by the present invention.

The spring clutch 400 uses, as shown in FIGS. 2A to 2D, a wrap spring, which is basically inexpensive, as the clutch member 402.

The spring clutch 400, the clutch member 402 made of a wrap spring formed integrally with the engaging portion (402a, 402b); The clutch member 402 is fitted with a spring friction surface 401a for providing frictional force to the body, and the body is firmly fitted to the support means 401b and the mounting means 51a of the bracket 51 protruding to a predetermined length. A clutch stator 401 provided with a mounting hole 401c formed at one side thereof; Manual pulley (403a) is caught by the ball chain 60 or a rotating rope (not shown); A drive member (403) formed with a drive rotor (rotor, 403b), the body being integrally or axially coupled to the manual pulley (403a), and fitted to the outer circumferential surface of the clutch stator (401); And a pick-up member 404 having a brake catching means (not shown in FIG. 2A, 404b of FIG. 2C) formed to increase the friction braking force between the clutch stator 401 and the clutch member 402.

In addition, it may include a transparent case 4a5 mounted on the outer periphery of the manual pulley 403a and covering and rotating the ball chain 60 or a rotating line (not shown) at the outer periphery.

The drive rotor 403b of the drive member 403 pushes the one side locking portion 402a integrally formed with the clutch member 402 in the direction in which the wrap spring body, which is the clutch member 402, is opened, and the clutch stator 401 is formed. Releases and rotates the friction braking force between the spring friction surface 401a and the wrap spring that is the clutch member 402.

The pickup member 404 has a protruding jaw 404a formed so that an outer circumferential surface thereof is fitted to the round bar 22, and an inner circumferential surface is coupled to the driving member 403 and the clutch stator 401, and the other side of the clutch member 402 is caught. The portion 402b is pushed in the direction in which the wrap spring body is narrowed to increase the friction braking force between the clutch stator 401 and the clutch member 402.

Thus, during driving, when the user rotates the manual pulley 403a, which is one component of the driving member 403, with the force to pull the ball chain 60 or the rotating line (not shown) (solid arrow direction in Fig. 3) The driving rotor 403b pushes the engaging portion 402a of the clutch member 402 in the direction in which the wrap spring body is opened to release the friction braking force between the clutch stator 401 and the clutch member 402, and at the same time, By pushing and rotating the braking means 404b of the member 404, the projection jaw 404a formed on the outer circumferential surface of the member 404 pushes and rotates the round bar 22 in the rotational direction.

On the other hand, in order to stop the fabric from falling by gravity, that is, when the user stops pulling the ball chain 60 or the swivel (not shown) as the state to be braked or the fabric is suspended in the usual, screen 20 The rotational force acts on the round bar 22 according to the load of, and the rotational force eventually rotates the pickup member 404, but the braking means 404b of the pickup member 404 The downward gravity force in accordance with the load of the fabric is pushed in the direction in which the wrap spring body is narrowed (in the direction of the dashed arrow in FIG. 3) to increase the friction braking force between the spring friction surface 401a of the clutch stator 401 and the clutch member 402. The self-rotating stop (ie braking) of the round bar 22 to prevent.

In this case, the inner diameter of the wrap spring is 0.3 mm to 0.6 mm smaller than the outer diameter of the clutch stator 401, and is usually manufactured. The locking portions 402a and 402b of the member 402 are wound to the worker's hand so that the worker avoids. However, apart from this, after being assembled, the wrap spring is too tightly squeezed to the clutch stator 401 so that the rotational driving force is stiff, and even when rotated, a lot of frictional heat is generated, which is a plastic stator 401. This is the main cause of thermal and abrasion deformation.

Therefore, in the conventional clutch, lubricant is additionally applied to solve this problem, but when the lubricant is pulled out or volatilized by gravity over time, the occurrence of more rapid thermal deformation and wear deformation is well known to those skilled in the art. The whole industry has been troubled and still cannot be resolved.

Under the conventional clutch technology in this state, there was a structural problem as mentioned above that must be solved technically, which is not solved by a person skilled in the art. The present inventors have analyzed this, and in order to help the person skilled in the art, the root cause is briefly described. Explain. In order for the wrap spring to fit into the clutch stator 401 and be used for the purpose of both braking and driving as the core clutching element, the drive rotor 403b has two locking portions (both ends of the clutch member 402). Naturally, it should be placed in a position to widen the diameter of the wrap spring while rotating between 402a and 402b (since it must be driven left and right), and also the braking means of the pickup member 404 (not shown in FIG. 2A, FIG. 2A). 404b of 2c should also be placed in a position to narrow the inner diameter of the lap spring to rotate between the engaging portions 402a and 402b of the clutch member 402 to brake when the rod 22 rotates by gravity. Braking).

Accordingly, two components of the driving member 403 and the pickup member 404, which are two mutually contradictory mechanical elements, are separated from each other by a winding number in a state where only a slight tolerance is given. The two engaging portions 402a and 402b of the 402 are opposed to each other in an assembled state with each other interposed therebetween, so that the pick-up member 404 and the driving member 403 each have their own targets as desired at different times. In actual operation, there is a fundamental cause of the structure that can cause mutual interference, and this mutual interference acts as a bottleneck because it critically prevents braking, especially when the fabric is lowered.

More specifically, when the user lowers the fabric and stops pulling, the position of the driving rotor 403b is located close to the one side locking portion 402a of the clutch member 402, and the pickup member 404 Is pushed to the far-end load and pushes one end of the spring tip to reduce braking while reducing its inner diameter. However, due to the interference caused by the cross-assembly, the driving rotor 403b is driven and simultaneously opens the other locking portion 402b of the clutch member 402 located very close to the other side, so that braking is not performed. will be.

On the other hand, the situation is completely different immediately after the user drives up, because the moment the user stops pulling immediately after driving up the awning while opening one side locking portion 402a of the clutch member 402, The pickup member 404 is dragged by the far-end load and enters the braking while automatically rotating upside down, and even if it causes interference at the same time, even if the driving rotor 403b is driven (even if it is interfered), there is no problem in the braking after ascending driving. Does not occur. The reason for this is that at this time, since the engaging portion 402b of the opposite clutch member 402 is spaced apart from the driving rotor 403b by a considerable distance, the pick-up member 404 is located on the other side of the clutch member 402 by the distance. The pick-up member which is driven or braked by the driving rotor 403b interferes with the one-side locking portion 402a, which is the spring tip during driving, by pushing the tip of the wrap spring, which is the locking portion 402b, to narrow the inner diameter and completely brakes it. Only when it is pushed to 404 and turned to the opposite spring tip to one side locking portion 402a, a malfunction occurs, and since it is not touched before, there is no problem in braking after ascending. For reference, the tips of the wrap springs, which are both locking portions 402a and 402b of the clutch member 402, are not disposed at 180 degrees, and are configured at about 105 to 150 degrees, and the driving rotor 403b is also configured at about 105 to 150 degrees. As it is rotated, it should be rotated 60 ~ 170 degrees to cause malfunction.

For example, the braking means of the pickup member 404 (not shown in FIG. 2A, 404b of FIG. 2C) pushes the other locking portion 402b of the clutch member 402 (that is, the pickup member 404 of the wrap spring). When the braking is attempted by narrowing the inner diameter of the lap spring, pushing the opposite end tip, there is a structural problem in which the above-mentioned cross interference and the pickup member 404 and the driving member 403 are not completely independent of each other before braking is completed. Due to this, rather than the pickup member 404 touches the drive member 403 abuts to the tolerance level, by being rotated together with a predetermined portion, one side engaging portion 402a of the clutch member 402 undesirably opens, braking This is not perfect, especially when it comes down.

However, in the art does not fundamentally solve this problem, the method of the shortcut method is applied, by making the inner diameter of the wrap spring very small by 0.3mm ~ 0.6mm than the outer circumferential surface of the clutch stator 401, such a mutual interference, Even if this occurs, the other lap spring tip is made to resist the interference rotation of the driving member 403, so that the pickup member 404 is braked. However, due to this, in the conventional spring clutch 400, three infamous problems are known to those skilled in the art. That is, firstly, the user is stiff enough to rotate the drive, and secondly, even if it rotates, a lot of frictional heat is generated. The phenomenon of gradually falling (lubricated oil is applied to the brake), and third, the plastic material is easy to thermal deformation and wear deformation in the clutch stator 401. Eventually, this leads to defects and after sales.

In summary, the pattern of mutual interference is rotated a predetermined angle when braking the narrowing of the inner diameter of the wrap spring by the blind self load, which is mainly when the pick-up member 404 is braking. Since the body rotates by pressing, the body is twisted due to the characteristics of the spiral wrap spring, and moves in the front, rear, up, down, left and right directions, and thus shows a pattern in which interference occurs. That is, when the blind is driven, the round bar 22 rotates up, down, left and right while causing the pattern to move forward and backward in the axial direction, and the pick-up member 404 is affected by the rotation. It will be readily understood by those skilled in the art that the interference contact with the drive rotor 403b is both up, down, left, and right and back axial patterns. Among them, the interference pattern in the axial direction is relatively easy to control, but it is a difficult task to prevent mutual interference in up, down, left, and right in the above-described intersecting structural situation.

On the other hand, those skilled in the art in order to alleviate the underlying structural problems of the spring clutch 400, the inner diameter of the wrap spring is about 0.1mm ~ 0.2mm than the outer diameter of the clutch stator 401, so that the wrap spring applied to the conventional clutch Attempts have been made to increase the frictional force with the wrap spring by widening the inner diameter and applying a metallic material to the clutch stator 401. However, this time the lap spring rotates on its outer circumference, because the clutch stator 401 is a metallic material at the time of driving. Because of this rotation, the “beep” distance produced the rotational noise (the sound produced even with lubricating agent), which was virtually impossible to apply (the “beep” noise at home was fatal).

In addition, in order to solve this problem, as shown in Figure 2d, in addition to the planetary gear set (planetary gear set) in a manner that is integral or coupled to the drive rotor (403b), ring gear (403d) and planetary gear 403c and the combination of the reduction gear ratio among the combination of the sun gear 403f allow the user to drive with little force during driving, thereby alleviating the problem of pulling the user even when the wrap spring is tightly tightened. At the same time, by reducing the rotational speed of the wrap spring on the outer circumference of the clutch stator 401, a method of minimizing the occurrence of “쉭쉭” distance noise when applying metal was applied. The problem is mitigated by reducing the number of itself to minimize wear and frictional heat, but the drive member 403 and the pickup member 404 are still used. The intervention was fundamentally does not stop the problem.

In addition, some persons skilled in the art restricts the number of windings of the wrap spring to within the thickness of the manual pulley 403a, and forms the driving rotor 403b of the drive member 403 in the body of the manual pulley 403a by integral or shaft coupling. It is configured to prevent the left and right swing, but still does not prevent the front and rear axial interference between the drive member 403 and the pickup member 404, and in this case, the number of winding of the wrap spring is small to provide sufficient braking force It had limitations that were only applicable to lightweight blinds.

For example, such a conventional sprinkler clutch 400 allows a single integrally formed mechanical element, called a wrap spring, to handle braking and driving at the same time, and is very easy to manufacture. It is mostly used in hoist equipment such as laundry machines, but as described above, it has a big problem.

Even because the above problems are not solved at present, some of those skilled in the art are concerned about the after-sales cost, which is too expensive, and the motor as an electronic device has many other A It causes a lot / S, a lot of those skilled in the art are in great difficulty, and there is a need for an alternative to solve this problem.

The present invention was created in view of the above-mentioned problems in the prior art, and has been created to solve this problem. The purpose is to provide.

Clutch module for hoist device according to an aspect of the present invention, a rotary body such as a manual pulley or a drive wheel rotated by an external force; A first clutch member including a wrap spring integrally formed with a locking portion; A clutch stator having a first spring friction surface fitted with the first clutch member to provide a frictional force and fixed to the bracket; When rotating by the rotation of the rotating body, between the spring friction surface of the clutch stator and the inner diameter of the wrap spring, which is the first clutch member, pushes the engaging portion of the first clutch member in the direction in which the body of the wrap spring that is the first clutch member opens. A drive member including a first drive rotor for releasing and rotating the friction braking force; When the rotational force of the drive member is transmitted to the power transmission unit of the hoist device, and conversely, when the rotational force of the power transmission unit of the hoist device is transmitted, the first clutch member of the first clutch member is narrowed in the direction in which the wrap spring body of the first clutch member is narrowed. A pickup member which pushes the engaging portion to increase the friction braking force between the clutch stator and the first clutch member; And an interference preventing means for preventing unnecessary interference between the driving member and the pickup member to prevent a phenomenon in which the braking force is dropped by the unnecessary interference when the rotational force of the power transmission unit of the hoist device is transmitted to the pickup member ; Characterized in that it comprises a.

Preferably, the second clutch member is provided with another wrap spring (Wrap Spring) formed integrally with the engaging portion while being fitted to the second spring friction surface of the clutch stator; Further, the second clutch member has no influence when the rotational force of the drive member is transmitted to the power transmission unit of the hoist device through the pickup member, but the rotational force of the power transmission unit of the hoist device is reversed In the case of being transmitted to, the traction spring body of the second clutch member is narrowed by the pickup member to increase the friction braking force between the clutch stator and the second clutch member, thereby to brake the entire operation. It is done.

More preferably, the second spring friction surface of the clutch stator and the second clutch member of the clutch stator are pushed in the direction in which the wrap spring body opens while the engaging portion formed integrally with the second clutch member rotates together with the rotating body when the hoist device is driven. And a second drive rotor for releasing and rotating the friction braking force between the springs.

Most preferably, when the second drive rotor formed on the rotating body rotates, it is driven by one side engaging portion formed on the second clutch member which is pushed and rotated, and at the same time other than being driven by the second clutch member. When driven by an external force, the frictional braking force between the second spring friction surface of the clutch stator and the wrap spring which is the second clutch member is pushed in the direction in which the wrap spring body, which is the second clutch member, is narrowed to the direction in which the wrap spring body, which is the second clutch member, is narrowed. It is characterized in that it further comprises a slip braking rotor for braking the body despite the malfunction of the first clutch member.

Further, the first drive rotor is more preferably formed integrally with the drive member, and the second drive rotor is more preferably formed integrally with the rotor.

Also preferably, the clutch stator may include a clutch stator core fixed to a bracket, and mounting aids having a first spring friction surface on an outer surface thereof while being coupled to the outside of the clutch stator core.

Also preferably, the first separating means which is interposed between the pickup member and the drive member to prevent the rotation interference of both; It characterized in that it further comprises.

Also preferably, the second separating means which is interposed between the drive member and the rotating body to prevent the rotation interference of both; It characterized in that it further comprises.

According to another aspect of the invention, there is provided a hoist device comprising the clutch module for the hoist device.

The clutch module and the hoist device using the same according to the present invention have not only enhanced braking and smooth operation effects, but also can be easily miniaturized, can utilize a proper gear ratio, and can obtain a robust and inexpensive manufacturing cost.

Further objects and effects of the present invention will become more apparent from the following detailed description for carrying out the present invention described with reference to the drawings.

1A and 1B are a perspective view and an exploded perspective view, respectively, of a typical representative roll shade;
1C is a perspective view of a combination blind, which is a kind of roll shade using two plies,
1D is a perspective view of a plastic bracket that is one type of various brackets assembled in one configuration to a roll sunshade,
Figure 2a is an exploded perspective view showing a conventional roll sunshade clutch,
2B is an example of various roll sunshade clutches,
Figure 2c is an exploded perspective view of the real picture clutch shown in Figure 2b,
Figure 2d is an exploded perspective view of a reduction roll sunshade clutch applying a conventional planetary gear,
3 is a cross-sectional view of a conventional roll blind coupled state, which is a kind of a conventional roll type sunshade.
4A is a perspective view of a braking and driving clutch for various hoist devices according to a first embodiment of the present invention;
4B is a perspective view of a braking and driving clutch for various hoist devices according to a second embodiment of the present invention.
FIG. 5A is a partially exploded perspective view illustrating a brake and a driving clutch for various hoist devices according to a first embodiment of the present invention; FIG.
5B is a cross-sectional view of the brake and drive clutch for various hoist devices according to the first embodiment of the present invention;
5C is a cross-sectional view of the brake and drive clutch for various hoist devices according to the first modification of the first embodiment of the present invention;
5D is a partially exploded perspective view of the brake and drive clutch for various hoist devices according to the first modification of the first embodiment of the present invention,
5E is a cross-sectional view of the braking and driving clutch for various hoist machines according to the second modification of the first embodiment of the present invention;
5F is a partially exploded perspective view of the braking and drive clutch for various hoist devices according to the second modification of the first embodiment of the present invention.
Figure 6a is an exploded perspective view for explaining the brake and drive clutch for various hoist devices according to a second embodiment of the present invention,
6B is a cutaway perspective view of a brake and drive clutch for various hoist devices according to a second embodiment of the present invention;
Figure 6c is a cross-sectional view of the brake and drive clutch for various hoist equipment according to a modification of the second embodiment of the present invention,
6D is an exploded perspective view of the brake and drive clutch for various hoist devices according to the modification of the second embodiment of the present invention.
6E and 6F are sectional views of a partially separated state of FIG. 6C, and FIG. 6E is a sectional view of driving a manual pulley, and FIG. 6F is a sectional view of a state where braking is applied by the rotation of the pickup member.

In the accompanying drawings, it should be noted that the same reference numerals are used in the drawings to designate the same configuration in other drawings as much as possible. In the description of the present invention, when it is determined that a detailed description of a known function or a known configuration related to the present invention may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted. And certain features shown in the drawings are enlarged or reduced or simplified for ease of description, the drawings and their components are not necessarily drawn to scale. In addition, in the direction of the device or element, front and rear, right and left, up and down, vertical and horizontal do not mean that the associated device or element should have a specific direction to facilitate the description of the present invention. In addition, terms such as "first", "second", "cancer", "number", and the like are used for convenience of description and do not mean a relative majority or intention or order in the description and the claims. . Such matters will be readily understood by those skilled in the art.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment according to the present invention and the description of the same configuration described in the background will be used as it is.

However, the accompanying drawings are only described in order to more easily disclose the contents of the present invention, and the scope of the present invention is not limited to the scope of the accompanying drawings, as long as those skilled in the art. You will know.

(First embodiment)

First, various brake and drive clutches for a hoist device according to a first embodiment of the present invention will be described with reference to FIGS. 4A and 5A to 5F.

4A is a perspective view of a brake and drive clutch for various hoist devices according to a first embodiment of the present invention, and FIG. 5A is a partial exploded view for explaining a brake and drive clutch for various hoist devices according to a first embodiment of the present invention. 5B is a sectional view of a brake and drive clutch for various hoist devices according to a first embodiment of the present invention.

Figure 5c is a cross-sectional view of the brake and drive clutch for various hoist equipment according to the first modification of the first embodiment of the present invention, Figure 5d is a brake for various hoist equipment according to the first modification of the first embodiment of the present invention Partially exploded perspective view of the drive clutch.

Figure 5e is a cross-sectional view of the brake and drive clutch for various hoist devices according to the second modification of the first embodiment of the present invention, Figure 5f is a brake for various hoist devices according to the second modification of the first embodiment of the present invention Partially exploded perspective view of the drive clutch.

The clutch module 500 for smooth braking and smooth operation according to the first embodiment of the present invention includes a wrap spring having integrally engaging parts 502a and 502b, as shown in FIGS. 4A and 5A to 5B. Clutch member 502 provided by (Wrap Spring); The clutch member 502 is fitted with a spring friction surface 501a for providing a frictional force to the body and supporting means protruding to a predetermined length and mounting means of the bracket (not shown, see 51 in FIGS. 1C and 2A). A clutch stator 501 provided with a mounting hole (not shown, see 401c of FIG. 2B) formed on one side of the body so as to be firmly fixed to the 51A of FIGS. 1C and 2A; A manual pulley 503a that is caught and rotated by a ball chain (not shown, see FIG. 2B) or a rotating line (not shown); A drive member 503 formed at the body of the drive rotor 503b and integrally or axially coupled to the manual pulley 503a and fitted to the outer circumferential surface of the clutch stator 501; A pickup member 504 in which a braking engaging means 504b for increasing friction braking force between the clutch stator 501 and the clutch member 502 is formed; And separating means 507 provided to prevent the up, down, left and right interference between the pickup member 504 and the drive member 503. It is made, including.

In addition, it may further include a case 505 which is mounted on the outer periphery of the manual pulley 503a and covers and rotates the ball chain (not shown, see FIG. 2B) or the rotating cord (not shown) at the outer periphery.

The drive rotor 503b of the drive member 503 pushes the one side locking portion (for example, 502a) formed integrally with the clutch member 502 in the direction in which the body of the wrap spring, which is the clutch member 502, opens, and the clutch stator The friction braking force between the spring friction surface 501a of 501 and the inner diameter of the wrap spring that is the clutch member 502 is released and rotated.

The pickup member 504, the projection jaw (504a) is optionally provided integrally or separately so that the outer peripheral surface of the body to be fitted to the round bar (see 22 of Figure 1a), the body inner peripheral surface is bushing coupled to the clutch stator 501, The other side engaging portion (for example, 502b) is pushed in the direction in which the wrap spring body of the clutch member 502 is narrowed to increase the friction braking force between the clutch stator 501 and the clutch member 502. Here, the one side locking portion (for example, 502a) and the other side locking portion (for example, 502b) may be determined in reverse according to the lifting / lowering direction, and the reference numerals are purely for convenience of explanation.

Preferably, the clutch stator 501 further includes a first fixed coupling means formed on one side of the body, and further includes a second fixed coupling means 507a to be firmly fixed to the clutch stator 501. The member 504 and the drive member 503 are coupled to the clutch stator 501 so as to be stably mounted, and the body is formed to a predetermined length so that the pickup member 504 can be stably rotated from the rear, and at the same time, the drive member 503 is coupled to the bushing to be rotatable while being in close contact with the clutch stator 501.

That is, conventionally, when the pick-up member brakes, attempting to brake by narrowing the inner diameter of the wrap spring by the load of the blind itself, a predetermined angle is rotated. At this time, the tip of the wrap spring is strongly pressed and rotated, so that the body is spiral. Due to the nature of the in-wrap spring, it is moved in the front, rear, up, down, left, and right directions, and interference occurs. In this embodiment, the separating means 507 is disposed between the pickup member 504 and the driving member 503. At the same time, while the separation means 507 stably mounts a part of the pickup member 504 on its outer circumference to prevent axial interference, thereby causing the driving member to move up and down or to the left and right of the pickup member 504 when braking. 503 to prevent interference with.

In the first embodiment, the pickup member 504 is formed by integrally forming the projection jaw 504a so that the outer circumferential surface thereof is fitted to the round bar (not shown), and the clutch stator 501 or the manual pulley 503a or the driving member ( Any one selected from the 503 or the pickup member 504 may optionally further include all or part of any planetary gear train module.

On the other hand, the clutch module 500, which operates smoothly and smoothly according to the first embodiment, has an inner diameter of the wrap spring, which is the clutch member 502, narrower than the diameter of the spring friction surface 501a of the clutch stator 501. It is manufactured, but wider than the wrap spring used by a normal clutch, and can be provided without applying a lubricant. As the material of the clutch stator 501, it is preferable to use an engineering plastic material having good abrasion resistance and heat resistance.

The reason for this is that according to the first embodiment, since the wrap spring does not take the role of preventing the mutual interference between the driving member 503 and the pickup member 504, it is itself through the wrap spring. The branch can only function to its unique goal of braking and driving features. Even if the inner diameter of the lap spring is widened, if the lubrication is not applied, the branch has narrowed the inner diameter of the wrap spring and is braking rather than applying the lubrication. It is well known to those skilled in the art that the friction force is large, and the driving member 503 rotates the latching portion 502a of the wrap spring at a predetermined angle within a limited range because the driving member 503 has already been widened when the inner diameter of the wrap spring is manufactured. Since the inner diameter becomes wider even when pushed, the frictional force is reduced on the outer circumferential surface of the clutch stator 501 to rotate very smoothly. For reference, in the case where the inner diameter is narrowly manufactured and assembled due to the above-described problems as a conventional wrap spring, even if the driving member 503 rotates the locking portion 502a of the wrap spring by a limited angle, it is sufficient. The inner diameter does not widen, so it is rotated very tightly. This results in the wrap spring being able to be applied in a state in which the frictional heat due to rotation is reduced on the outer circumferential surface of the clutch stator 501, and thus, the heat deformation and the wear deformation are also reduced, and in addition, the wear resistance and heat resistance This is because the problem described by the background art is solved at the source when using the plastic with the characteristic.

In addition, the pickup member 504 has a body having a predetermined length and a separation means 507 which prevents the interference with the driving member 503 in the front and rear axial direction, and the pickup member 504 is moved forward and backward. It is possible to be provided so that the pick-up member 504 and the drive member 503 do not interfere with each other even in the vertical, vertical, left and right directions perpendicular to the axial direction so as not to swing in the vertical direction during operation. The number of windings is made within the thickness of the manual pulley 503a, and correspondingly, the drive rotor 503b is also formed within the thickness of the manual pulley 503a and the separating means 507 is advanced to the front immediately before the manual pulley 503a. It can be provided by any one selected from the one provided so that the pick-up member 504 and the drive member 503 to be placed thereon so as not to interfere with each other.

As a result, in the first embodiment, the body of the separating means 507 is formed to have a predetermined length so that the pick-up member 504 is stably mounted, so that the pick-up member (in the up, down, left, and right directions so as not to swing in the up, down, left, and right directions) 504 and the drive member 503 is characterized in that it is provided so as not to interfere with each other.

In addition, the clutch member 502, the clutch stator 501, the drive member 503 and the pickup member 504 constituting the clutch module 500 to operate the brake and smooth operation according to the first embodiment of the present invention is Since it is described in detail as a background art and can be easily understood by those skilled in the art, a detailed description thereof will be omitted, and thus the clutch module 500 for smooth braking and smooth operation according to the first embodiment of the present invention having such a configuration will be omitted. Only the relationship of operation will be described briefly.

For example, during driving, if the user rotates the manual pulley 503a with the force to pull the ball chain (not shown) or the rotating cord (not shown) (solid line arrow direction in Fig. 3), the driving rotor 503b is clutched. Pushing the one side locking portion 502a of the member 502 in the direction in which the wrap spring body opens, releases the friction braking force between the clutch stator 501 and the clutch member 502 and at the same time the braking locking means of the pickup member 504 ( By pushing and rotating 504b, the projection jaw 504a formed on the outer circumference eventually pushes the round bar 22 in the rotational direction to rotate.

On the other hand, in order to stop the fabric from falling by gravity, that is, when the user stops pulling the ball chain (not shown) or the tether (not shown) as the state of braking or the fabric is normally suspended, the screen ( According to the load of 20, a reverse rotational force acts on the round bar 22, and this rotational force eventually rotates the pickup member 504, but the braking means 504b of the pickup member 504 is a clutch member ( 502, the wrap spring body is pushed in the narrowing direction (in the direction of the dashed arrow in FIG. 3) to increase the friction braking force between the spring friction surface 501a of the clutch stator 501 and the clutch member 502, thereby loading the fabric. The self-rotating stop of the round bar 22 to prevent the falling gravity according to.

That is, the braking mechanism is the same as the operation relationship of the conventional clutch, but the enhanced braking and smoothly actuating clutch module 500 according to the first embodiment of the present invention, pickup means as a separation means 507, one configuration The member 504 does not touch the driving rotor 503b or the manual pulley 503a so as to prevent mutual interference.

In the first embodiment of the present invention, various modifications are possible.

That is, according to the clutch module 500 'according to the first modified example as shown in FIGS. 5C and 5D, first, the clutch stator core 511f and the core for mounting the clutch stator 511 to the stopper 40 are disposed. It is coupled to the outside and configured as a separate auxiliary means 518 having a spring friction surface (see 501a in Fig. 5a) on the outer surface, the brake stator means 504b of the pickup member 504 is inserted into the inner circumferentially deeply into the clutch stator A protruding annulus 518a is formed in the support auxiliary means 518 of 511 to form an annular shape.

According to this modification, the brake catching means 504b of the pick-up member 504 pushes in the direction in which the wrap spring body, which is the clutch member 502, is narrowed (in the direction of the dotted arrow in FIG. 3), and the spring of the clutch stator 511 is engaged. When the friction braking force between the friction surface and the clutch member 502 is increased, one end of the brake catching means 504b is inserted into the mounting aid means 518 so that the swinging phenomenon is limited. It is more preferable to block the up, down, left and right interference due to the vertical, horizontal, left and right swing of the member 504.

At this time, the mounting auxiliary means 518 may be made of a material resistant to wear of the wrap spring, and may be fixedly coupled to or integrally provided with the clutch stator core 511f.

The separating means 517 in this first variant has a simple washer shape without flanges as compared to the separating means 507 in FIG. 5A, as shown in FIGS. 5C and 5D to reduce the axial length. It is preferable to set it as.

On the other hand, as shown in Figs. 5E and 5F, according to the clutch module 500 "according to the second modification of the first embodiment of the present invention, the clutch stator 521 has a protruding annulus 521a. It may further include a stationary rotation rotor 521b embedded in the annular groove of the clutch stator 521.

Thus, if the brake catching means 504b and the stationary rotation rotor 521b are combined and provided, the brake catching means 504b is limited to be located inside the clutch stator 521, thereby preventing the up, down, left and right interference at the source. Of course, the mutual interference between the driving member 503 and the pickup member 504 can be further prevented, and it can give an additional advantage that more stable rotation is possible by the stationary rotation rotor 521b.

Further, as shown in Figs. 5E and 5F, the separating means 527 in the second modification can also be configured to have a flange portion 527b and a washer portion 527a.

(2nd Example)

Now, various brake and drive clutches for a hoist device according to a second embodiment of the present invention will be described with reference to FIGS. 4B and 6A to 6F.

4B is a perspective view of a braking and driving clutch for various hoist devices according to a second embodiment of the present invention.

Figure 6a is an exploded perspective view for explaining the brake and drive clutch for various hoist devices according to the second embodiment of the present invention, Figure 6b is a cutaway of the brake and drive clutch for various hoist devices according to a second embodiment of the present invention Perspective view.

Figure 6c is a cross-sectional view of the brake and drive clutch for various hoist devices according to a modification of the second embodiment of the present invention, Figure 6d is an exploded view of the brake and drive clutch for various hoist devices according to a modification of the second embodiment of the present invention. Perspective view.

6E and 6F are sectional views taken along the line VI-VI of FIG. 6C, and FIG. 6E is a sectional view of driving a manual pulley, and FIG. 6F is a sectional view of a state where braking is applied by the rotation of the pickup member.

The greatest difference between the enhanced braking and the smoothly actuating clutch module 600 according to the second embodiment of the present invention is shown in FIGS. 4B and 6A and 6B, in the first and second embodiments. In addition to the first clutch member 602 similar to the clutch member, it further has a second clutch member 612. In addition, for convenience of description, similarly to the first locking portion 602a and the second locking portion 602b provided at each end of the first clutch 602, the second clutches 602 and 612 in the present embodiment. The locking portions provided at both ends of the cross section are also distinguished from the first locking portions 602a and 612a and the second locking portions 602b and 612b. However, this is also distinguished for convenience of description, and it can be changed as much as the lifting and lowering direction of the weight of the hoist device, which is a relative concept.

The clutch module 600, which operates with enhanced braking and smooth operation according to the second embodiment of the present invention, is provided with a wrap spring in which the first and second catching portions 602a and 602b are integrally formed. Clutch member 602; A second clutch member 612 provided with a wrap spring in which the first and second catching portions 612a and 612b are integrally formed; The first spring friction surface 601a and the second clutch member 612 are fitted to the first clutch member 602 to provide the frictional force, and the second spring friction surface 601b is provided on the body to provide the frictional force. (Not shown, see 51 of Fig. 1c and 2a) mounting hole (not shown, Fig. 2a and Fig. 2a) A clutch stator 601 provided with reference numeral 401c of 2b; Manual pulley 606 is rotated by the ball chain 60 or a rotating rope (not shown); A drive member 603 fitted to an outer circumferential surface of the clutch stator 601; The first spring friction surface 601a and the first clutch member 602 of the clutch stator 601 are pushed by pushing the one side locking portions 602a and 602b integrally formed with the first clutch member 602 in the direction in which the wrap spring body opens. A first drive rotor 613b for releasing and rotating the friction braking force between the wrap springs; The second spring friction surface 601b of the clutch stator 601 and the second spring friction surface 601b of the clutch stator 601 are pushed by pushing the engaging portion 612a formed integrally with the second clutch member 612 while rotating together with the manual pulley 606. A second drive rotor 606a for releasing and rotating the friction braking force between the wrap springs that are the two clutch members 612; And the outer circumferential surface of the body is rotatably coupled to the round bar 22, and the inner circumferential surface of the body is rotatably coupled to the driving member 603 and the clutch stator 601, and the wrap spring body of the first clutch member 602 is moved up and down by the hoist device. A pickup member 604 pushed in a narrowing direction to increase friction braking force between the clutch stator 601 and the first clutch member 602; When the second drive rotor 606a formed on the manual pulley 606 is rotated, it is driven by one side engaging portion 612a, 612b formed on the second clutch member 612 to be pushed and rotated, At the same time, when driven by an external force (interference, etc.) other than being driven by the second clutch member 612, the second clutch member 612 includes the engaging portion 612a formed integrally with the second clutch member 612. The in-wrap spring body is pushed in a narrowing direction to increase the friction braking force between the second spring friction surface 601b of the clutch stator 601 and the wrap spring, which is the second clutch member 612, to thereby increase the first clutch member 602. It further includes a slip stopper (603k) to brake the body irrespective of the malfunction of the.

When the pick-up member 604 is self-rotating, i.e., braking to prevent the blind fabric from falling by gravity, the pick-up member 604 is braked (when the brake spring is rotated by tightening the wrap spring). In order to prevent the braking from being disturbed by touching 603, the slip brake rotor 603k separately formed on the driving member 603 causes the latch spring of the wrap spring which is one component of the second clutch member 612 ( 612b is pushed so that its inner diameter is narrowed and stopped by forcibly braking the drive member 603, so that the pickup member 604 is strongly braked.

As a result, unlike the first embodiment of the present invention, the pickup caused by the pickup member 604 is further configured in a cascade manner as a separate additional wrap spring clutching element, by further configuring the interference. The interference between the members 604 and the driving member 603 due to mutual interference is forcibly prevented and the pickup member 604 is stably braked.

In addition, the manual pulley 606 may be mounted on the outer circumference and may further include a transparent case 605 that covers and rotates the ball chain 60 or a rotating line (not shown) on the outer circumference.

The first drive rotor 603b is protruded to one side by integrally or axially coupled to the drive member 603, and the second drive rotor 606a is integrally formed on the manual pulley 606 or is separate It is formed as a member and joined.

In addition, the first spring friction surface 601a and the second spring friction surface 601b may be separately manufactured and fitted into the body, or may be integrally formed with the body.

Similarly, the outer circumferential surface of the body of the pickup member 604 is also provided with one of the projection jaw 604a integrally or separately from the member to be fitted to the round bar 22, and the slip braking rotor 603k is also provided. It is formed integrally with the drive member 603 or provided separately and is rotatably coupled.

The body inner circumferential surface of the pickup member 604 is coupled to the driving member 603 and the clutch stator 601 and pushes in the direction in which the wrap spring body of the first clutch member 602 is narrowed to move the fabric up and down, and thus the clutch stator It is also possible to further provide a braking locking means (not shown, see 504b in FIG. 5A) to increase the friction braking force between 601 and the first clutch member 602.

The pickup member 604 is provided by integrally forming the projection jaw (604a) so that the outer peripheral surface is fitted to the round bar 22, the clutch stator 601 or the manual pulley 606 or the drive member 603 or the pickup member 604 Any one or more of the planetary gear train module may be further included in any one selected from among them, however, the planetary gear train module may be easily understood by those skilled in the art, and thus the detailed description thereof will be omitted.

On the other hand, the clutch module 600 ′, which operates with enhanced braking and smooth operation according to the modified example of the second embodiment of the present invention, will be described with reference to FIGS. 6A to 6F.

First, the clutch stator 611 of the clutch module 600 'according to the present modification is similar to that of the first modification of the first embodiment, and the clutch stator core 611f mounted on the stopper 40 and the core are mounted. It is coupled to the outside and is configured as a separate mounting means 618 having a first spring friction surface (618a in Figure 6d) and a second spring friction surface (618b in Figure 6d). In addition, the second fixed coupling means having a first fixed coupling means on one side of the body of the clutch stator 611, fitted to the clutch stator 611 is firmly fixed and integrally or separately manufactured (see 607a of FIGS. 6C and 6D). It further comprises, through which the pick-up member 604 and the driving member 613 is coupled to the clutch stator 611 to be stably mounted, the body is formed to a predetermined length so that the pick-up member 604 is rotated from the rear stably At the same time, the driving member 613 is in close contact with the clutch stator 611 or the transparent case 605 so as to be rotatable, so as to fundamentally separate the axial interference between the pickup member 604 and the driving member 613. Separating means 607 provided; It may optionally further include as shown in Figure 6c and 6d.

As a modification of the second embodiment of the present invention, a separating means 607 formed integrally with the second supporting means of the clutch stator 611 may be separately manufactured and further included, and may be driven by being fitted into the clutch stator 611. It is further preferable that the role of another third separating means (see FIGS. 6C and 6D 607) to prevent rotational interference of the member 613 and the manual pulley 616 is more preferable.

In addition, the mounting auxiliary means 618, which is another third separation means for forming any one or all selected from the first spring friction surface 618a or the second spring friction surface 618b into the body separately, It is further included, and fitted to the clutch stator core 611f of the clutch stator 611, the first and second clutch members 602 and 612 are fitted to the first and second spring friction surfaces 618a and 618b, respectively. The entire mounting auxiliary means 618, which is a third separating means, is inserted into the first supporting means, and the second driving rotor 616a and the slip braking rotor 613k of the driving member 613 are separated from each other so as not to interfere. When the brake braking rotor 613k of the driving member 613 rotates and brakes while tightening the inner diameter of the second clutch member 612, the brake brake rotor 613k is detached from the second driving rotor 616a, thereby preventing interference. It is most preferable because it can prevent more thoroughly.

At this time, if the number of windings of the second clutch member 612 is adjusted to be small so that the width thereof does not exceed the width of the manual pulley 616, the second as a driving member is provided only by the mounting auxiliary means 618 as the third separating means. More preferably, interference between the drive rotor 616a and the slip brake rotor 613k can be completely eliminated.

However, this also determines that the characteristic gist of the second embodiment may be unnecessarily obscured, and is applied only in the present modification, and is not provided in the second embodiment of the present invention, referring to FIGS. 6C and 6D. Since it is easily understood, it will be omitted.

Also, the first clutch member 602, the second clutch member 612, the clutch stator 611, the manual pulley 616, the transparent case 605, the drive member 613 and the pickup member for this modification 604 is described in detail in the second embodiment and can be easily understood by those skilled in the art, and thus further detailed description is omitted.

Components that perform the same or similar functions as in the other embodiments are given the same or similar member numbers, and detailed descriptions thereof will be omitted in some cases. Reference numeral 613c denotes a passage hole through which the engaging portions 602a and 602b of the first clutch member 602 pass when the clutch module is assembled.

In addition, the rotation direction of the spring of the clutch member of FIGS. 6C and 6D with respect to the modification of the second embodiment is opposite to the rotation direction of the spring of the clutch member of FIGS. 6A and 6B with respect to the second embodiment, and therefore, the driving The second drive rotor for releasing the clamping of the second clutch member 612, in the second embodiment has a circular frame shape in which part formed along the inner edge of the manual pulley is omitted (see 606a of FIG. 6A), and the second embodiment In the variation of the example, it is a protrusion shape formed at one point of the inner edge of the manual pulley (see 616a of FIG. 6D).

Similarly, the slip brake rotor, which is formed on the drive member and tightens the second clutch member 612 during braking, has a circular frame shape in which a part formed along the inner edge of the manual pulley is omitted in the modification of the second embodiment (Fig. 6D). 613k), in the second embodiment, a protrusion is formed at one point of one edge of the manual pulley (see 603k in FIG. 6A).

Now, finally, the operation relationship between the enhanced braking and the clutch module 600, 600 'operating smoothly according to the second embodiment of the present invention having such a configuration will be described with reference to FIGS. 6E and 6F.

Hereinafter, with reference to the drawings of Figs. 6C to 6F of the modification of the second embodiment, the operation of the clutch modules 600 and 600 'will be described with reference to the modification of the second embodiment.

Assume that the hoist device is lowered when pulling the right turn line down in FIGS. 6E and 6F. In addition, when pulling the left turn line (not shown) in Figure 6e, the hoist device also rises, but when stopping the drive in the middle of the lift as described in the problem of the prior art, so that the problem does not occur, so that point The description is omitted.

First, when the user pulls the ball chain (eg right side) or the swivel line 60 (see arrow “A” in FIG. 6E), the manual pulley 616 rotates to one side (clockwise in FIG. 6E) (See arrow "B" in FIG. 6E), when the second driving rotor 616a corresponding to the driving member pushes one side locking portion 612a of the second clutch member 612 in the direction in which the wrap spring body is opened, Simultaneously pushing and rotating the slip braking rotor 613k of the drive member 613, the first drive rotor 613b provided on the other side of the body of the drive member 613 is rotated at the same time, the first drive rotation The former 613b is rotated while pushing the first clutch member 602 in a direction in which the inner diameter is widened, so that the first clutch member 602 is a braking means of the pickup member 604 (604b in FIG. 6E and FIG. 5A). 504b) is rotated and rotated together, so as to rotate the pickup member 604, the projection jaw of the pickup member A round bar (not shown) fitted to 604a rotates to lower the hoist device.

On the other hand, if the user stops pulling the ball chain or the rotating rope 60 on the way, the fabric is lowered by the self-gravity (self-gravity) added to the fabric of the hoist machine immediately, which is a round bar (not shown) Rotate and rotate to the pick-up member 604 (see arrow “C” in FIG. 6F), and then the braking means of the pick-up member 604 (604b in FIG. 6F, FIG. 5A in FIG. 504B) is the first clutch member 602. The second locking portion 602b (in the direction in which the inner diameter of the first clutch member is narrowed) is braked.

In reality, however, the braking of the first clutch member 602 is started, and if the pick-up member 604 brakes and rotates, the drive member has a slight tolerance with the driving member, but due to the influence of gravity or swinging due to rotation, the driving member When the driving member 613 is rotated by contact or friction with 613, the first latching portion 602a of the first clutch member 602 is continuously opened (the inner diameter of the first clutch member is increased). Direction, which is a problem of the prior art, and a phenomenon in which the weight of the hoist device, such as a blind, flows down without being properly braked.

According to the technique of the second embodiment, the slip brake rotor 613k formed on the drive member 613 moves the second locking portion 612b of the second clutch member 612 (in the direction of narrowing the inner diameter of the second clutch member). And the second clutch member 612 is braked (see "D" arrow in FIG. 6F), thereby preventing the driving member 613 from interfering with the rotation, and then the pickup member 604 is moved to the first clutch. The second locking portion 602b of the member 602 is pushed (in a direction in which the inner diameter is narrowed), and the brake is further reliably applied.

Again, summarized the features of the enhanced brake and smoothly actuated clutch modules 600, 600 'according to the second embodiment of the present invention and its modifications, the configuration and the role of the conventional clutch described in the background art are assuredly ensured. Alternatively, according to the second embodiment of the present invention, the manual pulleys 606 and 616 and the second drive rotors 606a and 616a are separated from the drive members 603 and 613 by the second clutch member 612, and the pickup member To prevent the brake brake rotors 603k and 613k from being selectively selectively blocked by the second clutch member 612, the interference generated when the 604 pushes the first clutch member 602 to narrow the inner diameter thereof. Is to add another clutching function.

At the same time, when the user drives the manual pulley 616, the second clutch member 612-a clutch clutching function configured to connect the drive to the slip brake rotors 603k and 613k. The clutch power transmitted to the rotors 603k and 613k causes the first drive rotors 603b and 613b of the drive members 603 and 613 to move up and down the fabric, which is the original role as a normal clutch. It is a configuration to drive 602.

Therefore, the clutch module of the second embodiment of the present invention is significantly different from the configuration for the simple power connection of the conventional clutch, and even in the role of the clutch, the conventional clutch functions as a driving function when the pickup member 604 starts braking. There is also a distinctly different feature from the failure to block rotational interference to the manual pulleys 606 and 616 and the drive members 603 and 613.

In addition, between the second drive rotors 606a and 616a and the slip brake rotors 603k and 613k of the drive members 603 and 613, the separation means 607 and 618 are further included as in the first embodiment. When the brake braking rotor (603k, 613k) is braked, the interference rotation of the second driving rotor (606a, 616a) can be completely blocked. Immediately after release, when the pick-up member 604 starts to brake by narrowing the inner diameter by pressing the one locking portion 612b of the first clutch member 602, the first drive rotors 603b and 613b of the drive members 603 and 613 are Since it is also located near the other engaging portion 612a of the first clutch member 602, it also solves the fundamental problem of not braking properly when interference occurs, so that the pickup member 604 and the driving member 603,613 It is a very useful invention that can solve the problem of the conventional clutch.

Further, according to the second embodiment of the present invention, unlike the first embodiment, it also has the feature of forcibly and reliably prevents mutual interference, and therefore, the first spring friction surfaces 601a and 618a of the clutch stators 601 and 611 are thereby prevented. It is not necessary to make and mount the inner diameter of the wrap spring of the first clutch member 602 narrowly so as to fit tightly), which has an advantageous effect on assembly productivity, and enhanced braking and softening according to the second embodiment of the present invention. The operating clutch module 600, 600 'is provided with an inner diameter of the clutch member 602 smaller than the outer circumferential surface of the clutch stator 601 by only about 0.1 mm to 0.2 mm and wider than a normal clutch, and does not need to be lubricated. However, as the material of the clutch stator 601, it is more preferable to use an engineering plastic material having good abrasion resistance and heat resistance.

On the other hand, if the lubricant is not applied when the inner diameter of the wrap spring is widened, it is well known to those skilled in the art that the braking friction force is larger than the case where the inner diameter of the wrap spring is narrowed and the lubricant is applied, and it is rather smooth even in driving. The reason is that since the inner diameter of the wrap spring is already widened for smooth driving, the inner diameter becomes wider even if it is slightly pushed while the locking portions 602a and 602b of the driving spring, which are driving members, are rotated at a predetermined angle within a limited range. On the outer circumferential surface of the clutch stator 401, the frictional force is essentially lower than the frictional force of the spring, and rotates very smoothly. That is, when the inner diameter of the wrap spring is manufactured to be narrow and assembled, even if the driving members 603 and 613 rotate the wrapping portions 602a and 602b of the wrap spring in a limited angle, the inner diameter thereof does not widen sufficiently, and thus the rotation is performed in a very tight state. It is.

As a result, the wrap spring is a state in which the frictional heat due to rotation in the outer circumferential surface of the clutch stator 401 is significantly reduced, thereby having a feature that greatly reduces the thermal deformation and wear deformation, if you want to further improve the clutch This is because when the plastic having abrasion resistance and heat resistance is used for the stator 401, further problems are fundamentally blocked.

Furthermore, the embodiments of the present invention described above should not be construed as limiting the technical idea of the present invention. The protection scope of the present invention is limited only by the matters described in the claims, and those skilled in the art can change and change the technical idea of the present invention in various forms. Therefore, such improvements and modifications will fall within the protection scope of the present invention, as will be apparent to those skilled in the art.

500,500 ', 500 ": Clutch module according to the first embodiment of the present invention
600,600 ': clutch module according to a second embodiment of the present invention
601,611: clutch stator 602: first clutch member
603,613 drive member 604 pickup member
607: separating means 612: second clutch member

Claims (9)

A rotating body rotated by an external force;
A first clutch member including a wrap spring integrally formed with a locking portion;
A clutch stator having a first spring friction surface fitted with the first clutch member to provide a frictional force and fixed to the bracket;
When rotating by the rotation of the rotating body, between the spring friction surface of the clutch stator and the inner diameter of the wrap spring, which is the first clutch member, pushes the engaging portion of the first clutch member in the direction in which the body of the wrap spring that is the first clutch member opens. A drive member including a first drive rotor for releasing and rotating the friction braking force;
When the rotational force of the drive member is transmitted to the power transmission unit of the hoist device, and conversely, when the rotational force of the power transmission unit of the hoist device is transmitted, the first clutch member of the first clutch member is narrowed in the direction in which the wrap spring body of the first clutch member is narrowed. A pickup member which pushes the engaging portion to increase the friction braking force between the clutch stator and the first clutch member; And
Interference preventing means for preventing unnecessary interference between the driving member and the pickup member, and preventing a phenomenon that the braking force is dropped by the unnecessary interference when the rotational force of the power transmission unit of the hoist device is transmitted to the pickup member ;
Clutch module for hoist apparatus comprising a. The method of claim 1,
A second clutch member fitted to the second spring friction surface of the clutch stator and provided with another wrap spring formed integrally with a locking portion;
More,
The second clutch member has no influence when the rotational force of the drive member is transmitted to the power transmission unit of the hoist device through the pickup member, but conversely, when the rotational force of the power transmission unit of the hoist device is transmitted to the pickup member. The hoist device characterized in that the pick-up member operates in a direction in which the wrap spring body of the second clutch member is narrowed to increase the friction braking force between the clutch stator and the second clutch member, thereby braking the entire operation. Clutch module. The method of claim 2,
Friction braking force between the second spring friction surface of the clutch stator and the wrap spring that is the second clutch member by pushing the engaging portion formed integrally with the second clutch member in the direction in which the wrap spring body opens while rotating together with the rotating body when the hoist device is driven. The clutch module for a hoist device further comprises a second drive rotor for releasing and rotating. The method of claim 3, wherein
When the second drive rotor formed on the rotating body rotates, it is driven by one side engaging portion formed on the second clutch member which is pushed and rotated, and at the same time is driven by an external force other than being driven by the second clutch member. In this case, the engaging portion formed integrally with the second clutch member is pushed in the direction in which the wrap spring body, which is the second clutch member, is narrowed to increase the friction braking force between the second spring friction surface of the clutch stator and the wrap spring which is the second clutch member. 1 clutch module for a hoist device, characterized in that it further comprises a slip braking rotor for braking the body despite the malfunction of the clutch member. The method of claim 3, wherein
The first drive rotor is integrally formed on the drive member, the second drive rotor is a clutch module for a hoist device, characterized in that formed integrally with the rotor. The method of claim 1,
The clutch stator is a clutch module for a hoist device, characterized in that the clutch stator core which is fixed to the bracket and the mounting auxiliary means having a first spring friction surface on the outer surface while being coupled to the outside of the clutch stator core. The method of claim 1,
First separating means interposed between the pick-up member and the driving member to prevent rotational interference between them; Clutch module for a hoist device further comprising. The method of claim 1,
Second separating means interposed between the driving member and the rotating body to prevent rotational interference of both; Clutch module for a hoist device further comprising. A hoist device comprising the clutch module of any one of claims 1 to 8.

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