WO2019167645A1

WO2019167645A1 - Linear body winding/unwinding mechanism

Info

Publication number: WO2019167645A1
Application number: PCT/JP2019/005318
Authority: WO
Inventors: 純雄菅原
Original assignee: Ｓｋマシナリー株式会社
Priority date: 2018-02-27
Filing date: 2019-02-14
Publication date: 2019-09-06
Also published as: JPWO2019167645A1

Abstract

In the present invention a central shaft, both ends of which are supported so as to enable forward/reverse rotation, two guide rings, a threaded pipe extending/retracting body, and a winding tube are arranged in the stated order concentrically and side by side in the radial direction. When the central shaft rotates, the rotation thereof is transmitted to the winding tube via the guide rings. When the central shaft rotates the threaded pipe extending/retracting body also moves reciprocally along the axial direction of the central shaft, and the winding tube moves reciprocally along the axial direction of the central shaft by means of the threaded pipe extending/retracting body, which extends and retracts. Accordingly, when the central shaft rotates, the winding tube for winding and unwinding a linear body moves along the axial direction while rotating together with the central shaft.

Description

Winding and rewinding mechanism for linear objects

The present invention relates to a winding / rewinding mechanism for a linear body (also referred to as a winding / unwinding device for a linear body) for winding or rewinding the linear body on an outer peripheral surface of a winding cylinder. More specifically, the mechanical characteristics and functions of the mechanism are improved by improving the configuration of the main part.

As a means for reciprocating a desired moving body such as a transporting moving body or other moving bodies, a linear body for forward winding and a linear body for reverse winding are connected to the moving body, and both There is one in which the moving body is moved forward and backward by winding the linear body on the outer peripheral surface of the winding cylinder and rewinding it. Since this is for winding and rewinding the linear body, it is called a winding / rewinding mechanism for the linear body. Many such linear body winding and unwinding mechanisms have already been provided, and these are disclosed in the following Patent Documents 1 to 9.

JP 2007-127138 A JP 2009-204134 A JP 2011-002004 A JP 2011-038548 A JP 2012-002297 A Table 2013/137139 Japanese Patent Laying-Open No. 2015-164821 Japanese Unexamined Patent Application Publication No. 2016-0444757 Japanese Unexamined Patent Publication No. 2017-206217

The linear body winding and unwinding mechanisms disclosed in Patent Documents 1 to 9 can be roughly classified into the following two types based on the type of the winding cylinder. One of them is a side-opening type schematically shown in FIG. 7A, and the other is a side-closing type schematically shown in FIG. Each type of winding cylinder has advantages and disadvantages, as will be apparent from the following description.

In the case of the winding cylinder 1 having the side open type shown in FIG. 7 (a), one side is closed by the side wall 1a and the other side is open. This side open type winding cylinder 1 can easily inspect the inside of the cylinder from the opened side, and the maintenance inside the cylinder can be easily performed for the same reason. The side-opening type take-up cylinder 1 can reduce the amount of constituent material and the weight of the take-up cylinder 1 as much as there is no side wall on the open side. Furthermore, since the weight reduction of the winding cylinder 1 relaxes the strength conditions of related parts, the entire mechanism can be made compact. And these advantages realize the cost reduction of the whole mechanism including the winding cylinder 1.

On the other hand, when viewed in relation to the central axis (spline shaft) 2, the winding cylinder 1 in FIG. 7 (a) is connected to the central shaft 2 via a guide ring (spline nut) 3a attached to the side wall 1a. They are only in relative engagement. That is, the winding cylinder 1 shown in FIG. 7A is only assembled to the central shaft 2 in a state where one end is supported. With respect to the winding cylinder 1 in the one-end supported state, the tensile loads F1 and F2 from the forward winding linear body and the reverse winding linear body that are wound or unwound by this are shown in FIG. ) When such tensile loads F1 and F2 are steadily applied to the winding cylinder 1 that is supported at one end, the following problems may occur.

In FIG. 1 (a), the take-up cylinder 1 that constantly receives the tensile loads F1 and F2 is in a supported state, and therefore, there is a possibility that the take-up cylinder 1 may be tilted as shown by phantom lines in FIG. In addition, the central shaft 2 that supports the winding cylinder 1 may be partially bent. The reason why the central shaft 2 is partially bent is that the length of the engagement region between the central shaft 2 and the guide ring 3a, that is, the rigid region L1 that can resist the tensile loads F1 and F2 is very short. The inclination of the winding cylinder 1 and the bending of the central axis 2 have an unfavorable effect when winding and rewinding the normal winding linear body and the reverse winding linear body via the winding cylinder 1. . One of them is that the winding cylinder 1 vibrates or swings due to the above-described inclination or bending (hereinafter referred to as a swinging phenomenon of the winding cylinder 1). When such a shaking phenomenon occurs, as will be obvious, the accuracy and stability of the operation of the winding cylinder 1 are impaired, so that the linear body for normal winding and the linear body for reverse winding are appropriately wound or wound. It becomes difficult to return. This also deteriorates the operation controllability of the linear body by the winding cylinder 1, so that the traveling controllability when moving the moving body forward and backward using this type of mechanism is also deteriorated. Furthermore, knocking may occur in the moving body during traveling due to the occurrence of the shaking phenomenon. Such knocking also causes a decrease in traveling performance and controllability of the moving body, and the linear body is disconnected in extreme cases. After all, the linear body winding and unwinding mechanism has a short life (durability) due to mechanical fatigue caused by the shaking phenomenon.

Of course, the life reduction of the linear body winding and rewinding mechanism as described above can be suppressed or prevented by improving the mechanical strength such as increasing the design safety factor. In the case of countermeasures, the weight and compactness of the entire mechanism are hindered, and material costs, production costs, assembly costs, etc. are also increased, so it is possible to avoid increasing the cost of winding and unwinding mechanisms for linear bodies. Absent.

On the other hand, the winding cylinder 1 of the side-closed type shown in FIG. 7 (b) has its both side surfaces closed by the

side walls

1a and 1b. Further, guide rings (spline nuts) 3a and 3b are respectively attached to both

side walls

1a and 1b of the winding cylinder 1 having a closed side surface, and both

guide rings

3a and 3b are connected to a central shaft (spline shaft). ) 2 is relatively engaged. That is, the winding cylinder 1 shown in FIG. 7B is supported at both ends on the central shaft 2 via the two

guide rings

3a and 3b. In addition, in the side-closed take-up cylinder 1 shown in FIG. 7 (b), the rigid region L2 that can resist the above-described tensile loads F1 and F2 is also different from the rigid region L1 shown in FIG. 7 (a). Greatly surpassed. When the rigidity region L2 that opposes the tensile loads F1 and F2 is large in this way, the central shaft 2 is unlikely to bend, and the winding cylinder 1 supported at both ends is also difficult to tilt. The above-mentioned shaking phenomenon does not occur to the eye.

Therefore, the thing of FIG. 7 (b) is a lack of accuracy and stability regarding the operation of the winding cylinder 1, lack of travel controllability of the mobile body, knocking phenomenon during travel of the mobile body, normal winding wire Disconnection of the linear body and the linear body for reverse winding, and a decrease in the service life of the linear body winding / rewinding mechanism are unlikely to occur. In addition, it is not necessary to reinforce the parts of the mechanism for such measures, so the total cost including material costs, production costs, assembly costs, etc. does not increase, and the entire mechanism is downsized.・ We can satisfy weight reduction, downsizing.

However, the problem to be solved still remains in the winding cylinder 1 of FIG. This is because not only one side of the winding cylinder 1 is closed, but also the other side is closed. That is, in the side-closing type winding cylinder 1, since both sides are closed, the inside of the cylinder cannot be inspected or maintenance work inside the cylinder cannot be performed. In the inspection, there is a trouble of removing the

side wall

1a or 1b from the take-up cylinder 1 or assembling the

side wall

1a or 1b to the take-up cylinder 1 again. Further, the side-closed type winding cylinder 1 shown in FIG. 7 (b) with both side surfaces closed is side walls as compared with the side-opening type winding cylinder 1 shown in FIG. As much as one is required, weight reduction will be hindered, and the difficulty in terms of production and assembly will also increase. Of course, as much as the side wall is required, it becomes a cost increase factor and rebounds on the product.

Furthermore, among the winding / rewinding mechanisms for linear bodies having the winding cylinder 1 of the type as shown in FIG. 7B as a constituent element, the one disclosed in Patent Document 2 is the winding cylinder 1. Two members engaged with each other for reciprocating the shaft along the axial direction of the central shaft 2, that is, the mutually engaged male-threaded countershaft and the internally-threaded reciprocating member are disposed outside the winding cylinder 1. Undesirable in that it is equipped. One reason is that the entire mechanism is not compact because the two axes are dispersedly arranged, such as the central axis and the secondary axis. One of the other reasons is that the secondary axis becomes an obstacle during the winding wiring for the forward winding linear body and the reverse winding linear body that are taken up from the outer peripheral surface of the winding cylinder 1 to the predetermined portion. Because it becomes.

The present invention has been made in view of the technical problems as described above. The object of the present invention is to eliminate only the disadvantages of the prior art and to take out only the advantages of the prior art. Further, an object of the present invention is to provide an improved linear body winding / unwinding mechanism (also referred to as a linear body winding / unwinding device) so that more features can be added. It is.

The winding / rewinding mechanism for a linear body according to the present invention is characterized by the technical contents described in the following [1st paragraph] to [5th paragraph] as means for achieving the intended purpose. is there.
[Section 1]
It comprises a central shaft, a winding cylinder, a threaded tube telescopic body, two guide rings and a pair of bearing bodies as constituent elements, and the outer diameter of the central shaft and the inner and outer diameters of the two guide rings And the inner and outer diameters of the threaded tube telescopic body and the inner and outer diameters of the winding tube body [the outer diameter of the central axis <the inner and outer diameters of the two guide rings <the inner and outer diameters of the threaded tube stretching body <the inner and outer surfaces of the winding tube body Is set to satisfy the relationship of [diameter], and
An outer guide surface having a circumferential torque transmission function and an axial sliding function is formed on the outer peripheral surface of the central shaft, and
The winding cylinder is for winding and rewinding the linear body on the outer peripheral surface, and a side plate portion having a center hole is provided on one side surface and the other side surface is open. And
The internal threaded tube and the female screw, wherein the threaded tube expansion / contraction body is a combination of an internal threaded tube having a male thread on the outer peripheral surface and an external threaded tube having a female thread on the inner peripheral surface. The external threaded pipe having the inner peripheral surface is screwed by both male and female screws, and both the threaded pipes are combined inside and outside so as to be extendable in the axial direction, and
The pair of bearing bodies are for supporting both ends of the central axis so as to freely rotate forward and backward, and
An inner guide surface having a torque transmitting function in the circumferential direction and a sliding function in the axial direction is formed on the inner peripheral surfaces of the both guide rings for engaging with the outer guide surface of the central shaft. And
The center shaft is supported at both ends through the pair of bearing bodies so as to be rotatable forward and backward, and
The outer guide surface of the central shaft and the inner guide surfaces of the guide rings are engaged with each other, the guide rings are fitted into the outer peripheral portion of the central shaft, and the outer peripheral portion of the central shaft The both guide rings fitted together rotate together with the central axis and are movable along the axial direction of the central axis; and
The threaded pipe telescopic body is fitted on the outer peripheral part of the both guide rings fitted on the outer peripheral part of the central axis, and the central axis, the both guide rings, and the threaded pipe elastic body are arranged concentrically. And
The winding cylinder is fitted to the outer peripheral part of the screw tube telescopic body fitted to the outer peripheral part of the both guide rings, and the central shaft, the both guide rings, the screw pipe telescopic body, and the winding cylindrical body. Are concentrically arranged, and
The one guide ring, the internal threaded tube tip of the threaded tube telescopic body, and the side plate portion of the winding cylinder are fixed to each other, and the other guide ring and the internal thread of the threaded tube telescopic body The tube rear end is fixed to each other, and the external screw tube base end of the threaded tube expansion / contraction body is fixed to the one bearing body on the external screw tube base end side. A winding / rewinding mechanism for a linear body characterized by the above.
[Section 2]
An outer guide surface of the central axis is formed by a spline guide surface in which recesses and projections along the length direction of the shaft are alternately arranged in the circumferential direction of the shaft, and a recess along the length direction of the tube, The inner guide surfaces of the two guide rings are formed by spline guide surfaces in which convex shapes are alternately arranged in the circumferential direction of the shaft, and the outer guide surfaces of the central shaft and the inner guide surfaces of the two guide rings are The winding / rewinding mechanism for a linear body according to claim 1, which is engaged with each other.
[Section 3]
The linear body for the linear body described in the first aspect, wherein a linear body for normal winding and a linear body for reverse winding for synchronously winding and rewinding are mounted on the outer peripheral surface of the winding cylinder. Winding and rewinding mechanism.
[Section 4]
4. The linear body winding and unwinding mechanism according to item 3, wherein the forward winding linear body and the reverse winding linear body have a distal end connected to a movable body that can reciprocate.
[Section 5]
Item 4. The moving object is any one selected from the group consisting of water bottom movement, underwater movement, water surface movement, underground movement, ground movement, ground movement, and air movement. Winding and unwinding mechanism for linear bodies.

[Main components and main functions leading to effects]
In the case of the winding / rewinding mechanism for a linear body according to the present invention (hereinafter also simply referred to as the mechanism of the present invention), the winding cylinder has a side open type in which one side is opened. This side-opening type winding cylinder has utility and benefit as described later. Further, in the case of the mechanism of the present invention, the winding cylinder, the two guide rings, and the internal threaded tube of the threaded tube expansion / contraction body are connected and integrated in a concentric arrangement with the central axis of the central axis as the common axial line. It has become. That is, the relative relationship between the take-up cylinder and one guide ring is integrally connected, and the relative relationship between the take-up cylinder and the two guide rings is integrally connected, and a predetermined distance. However, these three members are integrally connected in a relative relationship between the two guide rings on the outer peripheral surface of the central shaft and the internal threaded pipe extending over both guide rings. When viewed comprehensively, the four members of the take-up cylinder, the two guide rings, and the internal screw tube form a four-member connection type by the respective member connections. This four-member connection type configuration is also useful and beneficial as will be described later. On the other hand, when the four-member connection type is mainly composed of the internal threaded tube of the threaded tube expansion / contraction body, the internal threaded tube extends over the two guide rings facing each other with a sufficient distance on the outer peripheral surface of the central axis. Both guide rings are connected in a bridged state. Further, when this connection structure is mainly composed of the central axis, a radial multiplexing structure (rigid region) is formed around the central axis by both guide rings and internal screw tubes. Since the multiplexing structure in this case is long over both ends of the internal threaded tube, the ratio of the multiplexing rigid region formed around the central axis is extremely large. Such a large multiplexed rigidity region is also useful and useful as will be described later.

The effects of the mechanism of the present invention, that is, useful and useful effects based on the above-described side-opening type winding cylinder, four-member connection type, a large multiplexed rigidity region, and the like are as follows.

[Effect 1: Accurate and stable operation]
In the case of a winding / rewinding mechanism for a linear body in which a relatively large rigidity region due to multiplexing exists around the central axis, the strength of the central axis is sufficiently guaranteed by the rigidity of the multiplexed rigidity region. It becomes difficult to bend and deform. In addition, with respect to the winding cylinder and the central axis when the main part of the mechanism forms the above-described four-member connection type, the concentricity between the winding cylinder and the central axis is appropriate by the four-member connection type having high support strength. Since the state is maintained and the linearity between the winding cylinder and the central axis is also maintained, neither of them is inclined. In other words, this means that the take-up cylinder inclination that causes the oscillation phenomenon is difficult to occur. In the case of a take-up cylinder that does not have the possibility of this shaking phenomenon, normal and accurate operability is exhibited without causing any change. The winding cylinder in the case where the vibration phenomenon does not occur also maintains a stable operation with respect to the winding operation and the rewinding operation of the linear body, so that the winding cylinder can travel through the mechanism. Knocking does not occur in the moving body.
[Effect 2: Controllability of operation object]
As described above, the linear body winding / rewinding mechanism that does not cause a vibration phenomenon in the winding cylinder can be used to perform normal, accurate, and stable linear body winding and rewinding operations. It can be done. Accordingly, it is possible to accurately and precisely control the operation of the object operated through the mechanism. For example, when the moving body travels to the target position via this mechanism and stops there, the moving body can be accurately stopped at the target position. In addition, as described above, the fact that knocking or the like does not occur in the moving body during traveling also increases the controllability of the operation target.
[Effect 3: Improved durability (life)]
Winding cylinders that do not cause vibration during forward / reverse rotation are not only accurate and stable, but always exhibit a calm operating state. A large external force that is accidentally generated due to knocking or the like does not act on each member such as. In such a case, it is difficult for a failure to occur in each part of the mechanism. In particular, disconnection of the linear body for normal winding and the linear body for reverse winding is unlikely to occur. Therefore, the durability (life) of the linear body winding / unwinding mechanism can be increased.
[Effect 4: Lightening, downsizing and downsizing of mechanism (Part 1)]
A side-opening type winding cylinder whose one side is open is lighter by the amount of material omitted due to the opening. In addition, since the winding cylinder is reduced in weight, the related component members are also reduced in weight and size. This brings about a good result in the weight reduction, size reduction, and compactness of the whole winding / rewinding mechanism for linear bodies.
[Effect 5: Lightening, downsizing and downsizing of mechanism (Part 2)]
The linear body winding and unwinding mechanism is a configuration that can ensure accuracy, stability, controllability, etc. with respect to the operation of the winding cylinder, and is also a configuration in which failure of each part of the mechanism is unlikely to occur. There is no need to reinforce mechanical parts. In such a case, the entire mechanism can be reduced in size, weight, and size.
[Effect 6: Lightening, downsizing and downsizing of mechanism (Part 3)]
In the winding / rewinding mechanism for linear bodies, the component members such as the central shaft, two guide rings, screw tube expansion / contraction body (internal screw tube and external screw tube), and winding cylinder are based on the axis of the central shaft. And are multiplexed in the radial direction. Among these, the winding cylinder rotates around the central axis or reciprocates (linearly moves) along the axial direction of the central axis. Then, intermediate members such as both guide rings and screw tube expansion / contraction bodies involved in the rotational motion and linear motion of the take-up cylinder body are the remaining space (excess space) existing between the outer periphery of the center shaft and the inner circumference of the take-up cylinder body. ) Are all housed inside. When such a multiplexed structure is used, it is possible to concentrate and arrange the interior of the mechanism using the surplus space without dispersing each component member. In addition, since there is no unnecessary expansion and weight of the components seen in the case of the scattered arrangement, the mechanism can be reduced in weight.
[Effect 7: Lighter, smaller and more compact mechanism (Part 4)]
In the winding / rewinding mechanism for linear bodies, a function for reciprocating the winding cylinder along the axial direction of the central axis is provided in the threaded tube expansion / contraction body existing between the outer periphery of the central axis and the inner periphery of the winding cylinder. There is. In this technology, in order to reciprocate the winding cylinder, the auxiliary shaft other than the central axis is arranged outside the winding cylinder. Biaxial dispersion with the shaft, which was an impediment to making the mechanism compact. Since the screw tube expansion / contraction body in the present invention is on the outer periphery of the central axis and is coaxially arranged, there is no hindrance to downsizing the mechanism as seen in biaxial dispersion. Since the internal threaded tube also serves as a connecting member for connecting the two guide rings, an increase in the number of components can be suppressed. Therefore, from this point of view, the mechanism can be reduced in weight, size, and size.
[Effect 8: Alleviation of wire obstruction of linear body]
In the existing technology, one of the difficulties due to the fact that the auxiliary shaft other than the central shaft is arranged outside the winding cylinder is a normal winding that is routed from the outer peripheral surface of the winding cylinder to a predetermined portion. That is, the wire body for reverse use and the wire body for reverse winding use the secondary shaft as a wiring obstacle. In the case of the threaded tube expansion / contraction body according to the present invention, as described above, the threaded tube expansion / contraction body is arranged coaxially with the central axis and is not outside the winding cylinder, so that it does not become a wiring obstruction of the linear body.
[Effect 9: Ease of inspection and maintenance]
Since the winding cylinder of the linear body winding and unwinding mechanism is the above-described open side, the inside of the cylinder can be easily inspected and maintenance work can be performed from the opened side.
[Effect 10: Cost reduction (part 1)]
In the case of a side-opening type winding cylinder that is open on one side, compared to a side-closing type winding cylinder that is closed on both sides, a single side wall of the winding cylinder is sufficient. Relying on material omission can contribute to material savings, and manufacturing and assembly with other parts can be performed easily. Based on this, the cost of the linear body winding and rewinding mechanism can be reduced.
[Effect 11: Cost reduction (part 2)]
The two guide rings in the mechanism of the present invention allow the winding cylinder to reciprocate along the central axis while transmitting the rotational force to the winding cylinder in the engaged state with the central axis. In addition to this, the two guide rings suppress the winding cylinder from being inclined and hold it in the correct attitude. These two guide rings can be said to be common parts or the same parts and do not increase the number of parts, which helps to reduce costs. About this guide ring, the attitude | position holding force of a winding cylinder shows the tendency which becomes long, so that the length is long. However, since the guide ring, which is a power transmission component, is an expensive component, when the size of the guide ring is increased, the component cost increases accordingly. The mechanism of the present invention forms a guide ring coupling body by increasing the distance between two guide rings and connecting them with an internal screw tube. This guide ring coupling body is equivalent to a long guide ring. That is, by shortening the individual guide rings and suppressing the cost of parts, the guide rings are connected to each other by the internal screw pipes, so that an equivalent to the long guide ring is constructed at a low cost. Therefore, this also helps to reduce costs. Further, for the connection of both guide rings, a dedicated connecting member is not used and used, but the internal screw tube is also used as the connecting member, so that the number of parts does not increase. Therefore, this also helps to reduce costs. Thus, when cost reduction is performed everywhere while satisfying a required function, a high-performance and high-performance linear body winding / rewinding mechanism can be provided at low cost.
[Effect 12: Cost reduction (part 3)]
As described above, the mechanism according to the present invention is greatly effective in preventing the swinging phenomenon of the winding cylinder during forward and reverse rotation, and the durability is improved. This anti-vibration measure is not accompanied by a cost increase factor that reinforces or enhances the mechanical strength of each part, and thus does not lead to an increase in material costs, production costs, assembly costs, and the like. Therefore, from this point of view, the linear body winding and unwinding mechanism is not expensive.

It is the top view which showed schematically one Embodiment of the winding-up rewinding mechanism for linear bodies which concerns on this invention. FIG. 2 is a cross-sectional view taken along the line II-II in FIG. FIG. 3 is a sectional view taken along line III-III in FIG. 2. FIG. 4 is a sectional view taken along line IV-IV in FIG. 2. It is the perspective view which showed schematically the winding pattern of the linear body. It is the front view which outlined the various examples about the winding cylinder. It is sectional drawing which simplified and showed the principal part of the conventional mechanism.

Embodiments of a linear body winding and rewinding mechanism according to the present invention will be described below with reference to the accompanying drawings.

1 to 4, 11 is a winding / rewinding mechanism, 21 is a mounting base, 31 is a prime mover, 41 is a central shaft, 51 is a winding cylinder, 61 is a threaded tube telescopic body, and 71A and 71B are guide rings. Each is shown.

1 to 4, each part or each member for constituting the winding / rewinding mechanism 11, for example, each part or each member other than a well-known ready-made product such as the motor 31 is made of metal / synthetic resin ( FRP is also included.) · Made of materials with excellent mechanical properties such as composites, and some parts may be made of rubber. In a typical example, each of these parts or members is often made of steel or other metal.

1 to 4, in the case of the mounting base 21, three bearing bodies 23 to 25 are erected on the base plate 22. More specifically, the bearing body 23 is erected on one side of the base plate 22, the bearing body 25 is erected on the other side of the base plate 22, and A bearing body 24 is erected at the intermediate portion. Among these bearing bodies, the bearing body 23 and the bearing body 24 are paired to support both ends of the central shaft 41 so as to be rotatable in the forward and reverse directions.

1 to 4, the prime mover 31 has a known output shaft 32 that can rotate forward at high speed or reversely rotate at high speed. The prime mover 31 is composed of an electric motor (motor) as an example. When the prime mover 31 is an electric motor (motor), a known or well-known servo motor or pulse motor is desirable. As is apparent from FIGS. 2 to 3, the prime mover 31 is attached to the bearing body 25 of the attachment base 21 and is mounted on the attachment base 21. More specifically, the output shaft 32 is attached to the outer surface of the bearing body 25 and passes through the bearing body 25.

The center shaft 41 illustrated in FIGS. 1 to 4 has an outer guide surface 42 having a circumferential torque transmission function and an axial sliding function formed on the outer circumferential surface thereof. A region where the outer guide surface 42 is formed on the outer peripheral surface of the central shaft 41 is a portion excluding both end portions (bearing portions) of the central shaft 41. A typical example of the external guide surface 42 is a spline guide surface (outer peripheral surface) in which ridges and convex shapes along the length direction of the shaft are alternately arranged in the circumferential direction of the shaft. The spline guide surface includes a guide surface by a ball spline, a guide surface by a square spline, and a guide surface by an involute spline. As another example, the outer circumferential surface may be an elliptical outer circumferential surface with an elliptical axis or a polygonal outer circumferential surface with a polygonal axis. The center shaft 41 having the spline guide surface (outer peripheral surface) may be referred to as a spline shaft or a spline shaft.

1 to 4, the central shaft 41 is supported at both ends through both bearing

bodies

23 and 24 of the mounting base 21 so as to be rotatable forward and backward. More specifically, a well-known bearing is attached to both ends of the center shaft 41, and both ends of the center shaft 41 are supported by both bearing

bodies

23 and 24 so as to be rotatable forward and backward. Thus, in the case of the central shaft 41 supported at both ends by the both bearing

bodies

23 and 24, it is aligned with the output shaft 32 of the prime mover 31 on the mounting base 21, and one end thereof (the right end portion in FIG. 1) is the bearing. It penetrates the body 24 and protrudes toward the bearing body 25. Furthermore, one end portion of the central shaft 41 protruding toward the bearing body 25 faces the output shaft 32 of the prime mover 31, and the one end portion of the central shaft 41 and the output shaft 32 of the prime mover 31 described above are well known. The couplings 33 are connected to each other. Thus, forward / reverse rotation of the prime mover 31 is transmitted to the central shaft 41.

The winding cylinder 51 illustrated in FIGS. 1 to 4 is for winding and unwinding the linear body on the outer peripheral surface thereof as described later. The winding cylinder 51 has a cylindrical shape with an internal space. As a typical example, the winding cylinder 51 has a cylindrical shape. A side plate 53 having a central hole 52 is provided on one side surface of the winding cylinder 51, but the other side surface of the winding cylinder 51 is open. Therefore, the winding cylinder 51 is a side open type in which one side is opened. On the outer peripheral surface of the winding cylinder 51, an alignment winding groove 54 for spirally winding

linear bodies

81 and 82 to be described later is formed in a spiral shape. The winding cylinder 51 may be referred to as a drum or a winding drum. The winding cylinder 51 is provided on the outer peripheral portion of the central shaft 41 in a manner to be described later.

In the case of the threaded tube expandable body 61 illustrated in FIGS. 1 to 4, an internal threaded tube 62 having a known male screw 63 on the outer peripheral surface and an outer threaded tube 64 having a known female screw 65 on the inner peripheral surface. It is a combination. That is, the threaded pipe expandable body 61 is formed by screwing the male thread 63 of the inner threaded pipe 62 relatively on the outside and the female thread 65 of the outer threaded pipe 64 relatively on the inner side, so that both the threaded cylinders 62 are connected. -64 is combined inside and outside so that it can expand and contract in the axial direction (relative movement is possible). Also in the case of the threaded tube expansion / contraction body 61, it is equipped on the outer peripheral portion of the central shaft 41 in a manner to be described later.

The two

guide rings

71A and 71B illustrated in FIGS. 1 to 4 can be said to be the same parts having the same shape. These two

guide rings

71A and 71B can be any of a short tubular form, a short tubular form, an annular form, and the like. Each of the guide rings 71A and 71B is formed with an inner guide surface 72 having a circumferential torque transmission function and an axial slip function on the inner circumferential surface thereof. Since the inner guide surfaces 72 of both guide rings 71A and 71B correspond to the outer guide surface 42 of the central shaft 41, the inner guide surfaces 72 can be engaged with the outer guide surfaces 42. A typical example of the internal guide surface 72 is the above-described spline guide surface (inner peripheral surface) in which concave stripes and convex shapes along the length direction of the shaft are alternately arranged in the circumferential direction of the shaft. The spline guide surface in this case also includes a ball spline guide surface, a square spline guide surface, an involute spline guide surface, and the like. As another example, the elliptical outer peripheral surface of the elliptical axis or the polygonal outer peripheral surface of the polygonal axis may be the inner guide surface 72. Both guide rings 71 A and 71 B further have a flange (flange) 73 on the outer periphery of one end thereof. About both guide ring 71A * 71B, this may be called a spline nut. Both guide rings 71A and 71B are also provided on the outer peripheral portion of the center shaft 41 in a manner described later.

1 to 4, the two

guide rings

71A and 71B are fitted in the outer peripheral portion of the central shaft 41. By this fitting, the external guide surface 42 of the central shaft 41 and the internal guide surfaces 72 of both guide rings 71A and 71B are relatively engaged. Therefore, when the central shaft 41 rotates, both guide rings 71A and 71B rotate together with the central shaft 41. The guide rings 71A and 71B that are relatively engaged with the central shaft 41 can also move (reciprocate) along the length direction (axial direction) of the central shaft 41.

In the embodiment shown in FIGS. 1 to 4, the part fitted on the outer peripheral surface of the central shaft 41 and on both guide rings 71 A and 71 B is a screw tube expansion / contraction body 61. In the case of this threaded tube expansion / contraction body 61, it covers over the outer peripheral portions of both guide rings 71A and 71B which are opposed to each other on the outer peripheral surface of the central shaft 41. Furthermore, since the internal screw tube 62 is located at the inner peripheral portion of the threaded pipe expansion / contraction body 61, the internal screw pipe 62 is covered over the outer peripheral portions of both guide rings 71A and 71B. In such a case, the screw tube expansion / contraction body 61 is relatively fixed (connected or coupled) to both guide rings 71A and 71B by means described later.

In the embodiment of FIGS. 1 to 4, the part fitted on the outer peripheral surface of the central shaft 41 and on the threaded tube expansion / contraction body 61 is a winding cylinder 51. Incidentally, the external threaded tube 62 is located at the outer peripheral portion of the threaded tube expandable body 61. Therefore, in the case of the take-up cylinder 51, it is covered on the outer peripheral surface of the external screw tube 62. The winding cylinder 51 in such a case is also relatively fixed (connected or coupled) to the guide ring 71A and the threaded pipe telescopic body 61 by means described later.

In the case of the embodiment illustrated in FIGS. 1 to 4, as described above, the predetermined component members are arranged in a multiplexed manner in the radial direction on the outer peripheral surface of the central shaft 41. That is, the guide rings 71A and 71B, the threaded tube telescopic body 61, and the winding cylinder 51 are sequentially arranged from the outer peripheral surface of the central shaft 41 to the centrifugal direction (the eccentric direction). Here, the outer diameter (diameter) of the central shaft 41 is D1, the inner diameters (diameters) of both guide rings 71A and 71B are D2, and the outer diameters (diameters) of both guide rings 71A and 71B other than the

flanges

73A and 73B are D3. The inner diameter (diameter) of the inner threaded tube 62 in the threaded tube telescopic body 61 is D4, the outer diameter (diameter) of the outer threaded pipe 64 in the threaded tube telescopic body 61 is D5, and the inner diameter (diameter) of the winding cylinder 51 is D6. When the outer diameter (diameter) of the winding cylinder 51 is D7, these satisfy the following inequality (1) as is obvious.
D1 <D2 <D3 <D4 <D5 <D6 <D7 (1)

In the above inequality (1), the difference between [D1] and [D2] and the difference between [D3] and [D4] are slightly different in order to ensure a precise fit. The difference between [D5] and [D6] is set to such an extent that the outer peripheral surface of the screw tube expansion / contraction body 61 (the outer peripheral surface of the external screw tube 64) and the inner peripheral surface of the winding cylinder 51 do not rub against each other. The difference is very small. On the other hand, the effective length of the central shaft 41, that is, the length of the outer guide surface 42 on the outer peripheral surface of the central shaft is the maximum expansion / contraction stroke of the screw tube expansion / contraction body 61 (maximum extension state of the internal screw tube 62 and the external screw tube 64). It is set corresponding to.

As is apparent with reference to FIG. 1, the right end portion of the internal threaded tube 62, which is a part of the threaded tube expansion / contraction body 61, the guide ring 71 A on the right side of FIG. It is fixed to. This is component connection or component connection for integrally operating the internal screw tube 62, the guide ring 71A, and the winding cylinder 51. More specifically, the guide ring 71A on the right side of FIG. 1 on the outer peripheral surface of the center shaft 41 passes through the center hole in the side plate portion 53 of the take-up cylinder 51, and the flange portion 73A is formed on the side plate. And the right end surface of the internal threaded tube 62 is in contact with the outer surface of the side plate portion 53, and a known fixture 55 such as a bolt is attached to the three parts in the contact state. It is screwed in from the outer surface side of the side plate portion 53, and the guide ring 71A (the flange portion 73A), the take-up cylindrical body 51 (the side plate portion 53), and the screw tube expansion / contraction body 61 (the internal screw tube 62) are coupled. . On the other hand, the collar portion 73B of the guide ring 71B on the left side of FIG. 1 is in contact with the left end surface of the internal threaded tube 62. It is screwed in from the outer surface side, and the guide ring 71B (the flange 73B) and the threaded pipe expansion / contraction body 61 (the inner threaded pipe 62) are coupled.

Further, the external threaded pipe 64 of the threaded pipe expansion / contraction body 61 has an end of the external threaded pipe 64 from the outer surface side of the bearing body 23 in a state where one end thereof (the left end in FIG. 2) abuts the inner surface of the bearing body 23. It is attached and fixed to the bearing body 23 by a known fixture 55 screwed toward one end.

Here, regarding the overall fixing mode of the threaded tube stretchable body 61, the threaded tube stretchable body 61 is connected to the side plate portion 53 of the take-up cylinder 51 at the tip end portion (the right end portion in FIG. 2) of the internal threaded tube 62. It is fixed, or the base end portion (left end portion in FIG. 2) of the external screw pipe 64 is attached and fixed to the bearing body 23 having a high supporting force. Therefore, in the case of the threaded tube expansion / contraction body 61, [end portion fixing of the internal threaded tube 62 + base end portion fixing of the external threaded tube 64] = [fixing both ends of the threaded tube stretching body 61] It has a fixed structure. When the fixing manner of the threaded tube expansion / contraction body 61 is viewed in relation to the winding cylinder 51, the winding cylinder 51 is not only fixed to the internal screw pipe 62 and the side plate portion 53 but also to the bearing body 23 and the external screw. It is supported or held on the outer peripheral portion of the central shaft 41 by a stable both-end fixing structure (both-end connection configuration) of the entire threaded tube expansion / contraction body including fixing to the tube 64. Therefore, with respect to the take-up cylinder 51 supported or held by the threaded tube expansion / contraction body 61, the above-described shaking phenomenon is less likely to occur from this point of view, and as a result, this is accurate and stable of the linear body. Therefore, the controllability during the operation and the linear body operation is improved.

As an example of obtaining an assembly structure as shown in FIGS. 1 to 4, the linear body winding / rewinding mechanism may be assembled as follows. That is, the assembly structure of the two

guide rings

71A and 71B, the threaded tube expansion and contraction body 61, and the take-up cylinder body 51 is assembled in advance. It fits into the outer periphery. Further, with respect to both ends of the central shaft 41 supported by the two bearing

bodies

23 and 24, the both ends of the central shaft 41 after the assembly structure is covered are supported by the two bearing

bodies

23 and 24 so as to be rotatable forward and backward.

In the case of the winding / rewinding mechanism for a linear body illustrated in FIGS. 1 to 4, the linear body 81 for forward winding and the linear body 82 for reverse winding are wound around the outer peripheral surface of the winding cylinder 51. It will be rewound. When a moving body such as a reciprocating body is moved by winding or unwinding such a linear body, both lines on the outer peripheral surface of the winding cylinder 51 are the same as in the conventional techniques such as Patent Documents 1 to 9. The proximal end portions of the

linear bodies

81 and 82 are fastened, and the distal ends of both

linear bodies

81 and 82 are connected to the moving body. The specific mode will be described with reference to FIG. 1 and other drawings.

First, materials and materials of the forward winding linear body 81 and the reverse winding linear body 82 will be described. Both the

linear bodies

81 and 82 are each made of a tough long object. In particular, flexibility and tensile strength are required as characteristics of the two

linear bodies

81 and 82. About the diameter of both the

linear bodies

81 and 82, the thing of arbitrary diameter is employ | adopted from a very thin thing like a thread | yarn to a thick thing like a rope. From a practical viewpoint, the

linear bodies

81 and 82 having a small diameter are desirable as long as the required strength can be ensured. Both the

linear bodies

81 and 82 have substantially no stretchability due to their high tensile strength even if they have flexibility. Specific materials for the two

linear bodies

81 and 82 include metal, synthetic resin, and composites thereof. For these, a plurality of single yarns or wires are twisted together. Both

linear bodies

81 and 82 in which aramid fibers known by the trade name Kevlar (registered trademark) are brought together are also effective examples. In a typical example, both

linear bodies

81 and 82 are made of a wire made of a tensile strength metal.

1 is connected to a movable body 91 that can reciprocate in the same figure. “For forward winding” and “for reverse winding” in both

linear bodies

81 and 82 are determined based on the moving body 91. That is, one linear body 81 connected to the moving body 91 is used for forward winding, and the other linear body 82 connected to the moving body 91 is used for reverse winding. Incidentally, when the winding cylinder 51 is rotated forward in order to move the moving body 91 forward (forward movement), the normal winding linear body 81 wound around the winding cylinder 51 moves the moving body 91 in the forward direction. This is moved forward while taking over. The reverse winding linear body 82 at this time allows the moving body 91 to move forward and backward by being rewound from the winding cylinder 51. On the other hand, when the winding cylinder 51 is reversely rotated to move the moving body 91 backward (return), the reverse winding linear body 82 wound around the winding cylinder 51 causes the moving body 91 to move. This is moved backward while taking back. The linear body 81 for normal winding at this time permits the backward movement of the moving body 91 by being rewound from the winding cylinder 51. As is clear from this description, “for normal winding” and “for reverse winding” in the two

linear bodies

81 and 82 only mean that the winding directions of the two

linear bodies

81 and 82 are different. Further, “forward rotation” and “reverse rotation” when winding and unwinding the two

linear bodies

81 and 82 only mean that the rotation direction of the winding cylinder 51 is different. Therefore, regarding forward rotation and reverse rotation of the winding cylinder 51, “forward rotation” may be clockwise (clockwise) rotation, and “reverse rotation” may be counterclockwise (clockwise) rotation. “Reverse rotation” may be clockwise (clockwise) rotation, and “forward rotation” may be counterclockwise (clockwise) rotation. Therefore, these items are appropriately set according to the situation.

About both

linear bodies

81 and 82, even if a continuous one is divided into a forward winding and a reverse winding and used separately, the forward winding and the reverse winding are two independent ones. There may be. In an example when both

linear bodies

81 and 82 are made of a single continuous body, as described later, both ends of the continuous linear body are attached to the outer peripheral surfaces of both ends of the take-up cylinder 51 with fasteners or adhesives. It is fixed by other fixing means, and the intermediate portion of the continuous linear body is spirally wound around the outer peripheral surface of the intermediate portion of the winding cylinder 51 in a spiral manner. Then, a loop-like portion having a slack is formed in a part of the intermediate portion of the continuous linear body, and the loop-like portion is seized and connected to the moving body 91. In another example in which both

linear bodies

81 and 82 are made of a single continuous body, as will be described later, an intermediate portion of the continuous linear body (a portion that becomes a boundary between both linear bodies 81 and 82) is wound. While being fixed to the central part of the outer peripheral surface of the cylindrical body 51, the continuous linear body is precisely wound spirally from the central part of the outer peripheral surface of the winding cylindrical body 51 toward both ends of the winding cylindrical body. And after connecting the both ends of a continuous linear body, it connects to the mobile body 91. FIG. Since the continuous linear body in this case becomes the

linear bodies

81 and 82 for forward winding and reverse winding, the winding amount of one (forward winding) linear body 81 around the winding cylinder 51 It is desirable that the winding amount of the linear body 82 on the other side (for reverse winding) is wound so as to be equal to each other.

The example illustrated in FIG. 1 is an example in which the above-described continuous linear body is used as both

linear bodies

81 and 82. In this case, the intermediate portion of the continuous linear body is spirally wound around the outer peripheral surface of the intermediate portion of the take-up cylinder 51, and both end portions of the continuous linear body are press-type fixing tools that use screws. 56 are fixed to the outer peripheral surfaces of both ends of the winding cylinder 51 through 56. On the other hand, the loop portion LP at the intermediate portion of the continuous linear body is roped through guide rotating wheels S1 to S5 such as sheaves or pulleys. Furthermore, a predetermined portion of the loop portion LP is connected to the moving body 91 via a linear body clamping fixture 93. In such a case, one of the continuous linear bodies is a forward winding linear body 81 with the moving body 91 as a boundary, and the other is a reverse winding linear body 82.

Of course, in the case of the two

linear bodies

81 and 82 described above, the continuous linear body does not necessarily remain, and for example, the continuous linear bodies are cut between the two fixtures 93 in the moving body 91 and separated from each other. It may be.

FIG. 5A shows the winding pattern of the two

linear bodies

81 and 82 in FIG. 1 together with the winding cylinder 51. FIG. 5B shows a winding in which an intermediate portion of the continuous linear body (a portion serving as a boundary between both linear bodies 81 and 82) is fixed to the central portion of the outer peripheral surface of the winding cylinder 51 with a fixing tool 57. A pattern is shown with the winding cylinder 51.

For each of the

linear bodies

81 and 82 described above, a plurality of forward winding linear bodies 81 and reverse winding linear bodies 82 may be used. For example, the case where there are two forward winding linear bodies 81 and two reverse winding linear bodies 82, or the case where there are three forward winding linear bodies 81 and three reverse winding linear bodies 82, respectively. There is also a form. Incidentally, when each of the normal winding linear body 81 and the reverse winding linear body 82 is one, the aligned winding groove (spiral groove) 54 formed on the outer peripheral surface of the winding cylinder 51 is one. is there. On the other hand, when there are two forward winding linear bodies 81 and two reverse winding linear bodies 82, two aligned winding grooves (spiral grooves) 54 are taken up as shown in FIG. When there are three forward winding linear bodies 81 and three reverse winding linear bodies 82 formed on the outer peripheral surface of the body 51, three aligned winding grooves (spiral grooves) as shown in FIG. ) 54 is formed on the outer peripheral surface of the winding cylinder 51.

The moving body 91 schematically shown in FIG. 1 is itself a processing machine tool, a transfer jig, or a part of a working robot. The moving body 91 in FIG. 1 includes a traveling member (not shown) such as a bearing for traveling when reciprocating. As a bearing in this case, it is desirable to select and use an appropriate one of linear ball bearings known from a shell type, a risotto type, a stroke type, and other types. As described above, the linear body clamping fixture 93 is for clamping and fixing the linear body.

1 is installed in a predetermined work area in order to perform a predetermined work. In such a case, any moving body traveling guide means 92 such as a guide rail, a feed base, and a guide rail-equipped base is installed in the work area (movement area). As an example, the moving body traveling guide means 92 including a guide rail is laid on a base. The moving body 91 is assembled on the guide means 92 and can reciprocate along the length direction of the guide means 92. Therefore, on a predetermined surface (back surface or the like) of the moving body 91, a traveling portion corresponding to the guide rail (guide means 92), for example, a traveling portion made up of arbitrary components such as a slider, a wheel, and a groove member is provided. As described above, the moving body 91 is connected to the forward winding linear body 81 and the reverse winding linear body 82, and in order to support both the

linear bodies

81 and 82, Guide rotating wheels S1 to S5 are arranged at appropriate positions as shown in FIG.

When the winding / rewinding mechanism for a linear body according to the present invention is used for traveling and control of the moving body, for example, when used in the mode illustrated in FIG. 1, the following is described. .

1 to 4, when the prime mover 31 is rotated forward, the rotation is transmitted to the central shaft 41 via the output shaft 32 and the coupling 33. Here, when seeing both the guide rings 71A and 71B, the internal threaded tube 62 of the threaded tube expansion and contraction body 61, and the winding cylinder 51, these form a four member connection type, and these four members operate integrally. Therefore, when the center shaft 41 rotates in the forward direction, the center shaft 41 and the take-up cylindrical body 51 are engaged by the relative engagement between the outer guide surface 42 of the center shaft 41 and the

inner guide surfaces

71A and 71B of both guide rings 71A and 71B. The internal threaded tube 62 is integrally rotated in the forward direction. Then, in the case of the internal screw tube 62 that is screwed with the external screw tube 64, screw rotation is applied by rotating itself, and the screw advances from the inside of the external screw tube 64 to the right in FIG. Therefore, at this time as well, both guide rings 71A and 71B and the take-up cylinder 51, which are integral with the internal screw tube 62, move in the same direction. Thus, the winding cylinder 51 moves at a predetermined pitch in the axial direction of the center shaft 41 (right direction in FIG. 1) while rotating forward.

In FIG. 1, when the winding cylinder 51 moves at a predetermined pitch in the axial direction of the central shaft 41 while rotating forward as described above, the positive winding linear body 81 is wound around the outer peripheral surface of the winding cylinder 51. At the same time, the reverse winding linear body 82 is rewound from the outer peripheral surface of the winding cylinder 51. In this case, the rewinding amount of the forward winding linear body 81 and the winding amount of the reverse winding linear body 82 are equal to each other. Further, since the winding cylinder 51 moves at a predetermined pitch in the axial direction of the central axis 41, the winding position of the normal winding linear body 81 on the outer peripheral surface of the winding cylindrical body 51 and the reverse winding linear body 82. The rewind position does not change. Then, the reverse winding linear body 82 is rewound while the normal winding linear body 81 is wound, so that the moving body 91 moves forward on the moving body traveling guide means 92 in the direction F1 in FIG. 1 (forward movement). Will be.

When the prime mover 31 is rotated in the reverse direction, all the operations and actions relating to the winding and rewinding described above are reversed, so that the linear body 81 for normal winding is unwound from the outer peripheral surface of the winding cylindrical body 51 at the same time. The reverse winding linear body 82 is wound around the outer peripheral surface of the winding cylinder 51. At this time, the winding amount and the unwinding amount of the two

linear bodies

51 and 52 are also equal to each other. By taking up and rewinding both the

linear bodies

51 and 52, the moving body 91 moves backward (returns) on the moving body traveling guide means 92 in the direction F2 in FIG.

In the above embodiment of the present invention, a multiplexed structure (rigid region) for preventing or suppressing the shaking phenomenon of the winding cylinder 51 and other problems and exhibiting the above-described benefits and usefulness, that is, The four-member connection type includes a winding cylinder 51, two

guide rings

71A and 71B, and an internal screw tube 62. In this case, the rigidity region in which the rigidity of the central shaft 41 is increased corresponds to almost the entire length (the length in the axial direction) of the internal screw tube 62, and can be said to be extremely long.

In the case of the winding / rewinding mechanism for a linear body according to the present invention, in the illustrated embodiment or the like, two types of linear bodies (a linear body 81 for normal winding and a linear body 82 for reverse winding) are wound or unwound. However, the mechanism of the present invention can also be applied to a case where one type of linear body is wound or unwound. In such a case, for example, one end portion of the linear body is fastened to the outer peripheral surface of the end portion of the winding cylinder 51 and the linear body is wound by forward and reverse rotation of the winding cylinder 51. Or rewind. Even when one type and a plurality of linear bodies are wound or unwound, the present invention can be carried out with the same contents.

The linear body winding and rewinding mechanism according to the present invention can be arranged in an arbitrary posture such as a horizontal type (horizontal type), a vertical type (vertical type), or a sloped inclined type. The moving body 91 can be moved horizontally, vertically, or tilted depending on the equipment aspect of the mechanism. For example, when the moving area (moving surface) of the moving body 91 in a horizontal movement or an inclined movement is a smooth surface, the moving body 91 can be driven without the moving body traveling guide means 92.

Among the above, when the moving body 91 is moved vertically or inclined, the moving body 91 is raised by winding the linear body by the winding cylinder 51, but when the moving body 91 is lowered, There may be one that utilizes the weight of the moving body 91 while rewinding the linear body from the winding cylinder 51. In this method, the moving body 91 is lowered by its own weight. In the case of this method, the two types of linear bodies (forward winding linear body 81 and reverse winding linear body 82) from the winding cylinder 51 may be connected to the moving body 91. A kind of linear body from the cylindrical body 51 may be connected to the moving body 91.

For the work area (moving area) of the moving body 91 that moves through the mechanism of the present invention, when a dedicated traveling path is provided, for example, a tunnel-type dedicated traveling path, an elevated dedicated traveling path, an intermediate-type traveling path, etc. When a dedicated traveling path, an overhead dedicated traveling path, a suspended suspended dedicated traveling path, a floating dedicated traveling path, a tower dedicated traveling path, or the like is provided, the mobile body 91 is configured to use these work areas (moving areas). ) Can be operated as intended. In such a case, the moving body 91 can work in almost any area, as will be understood from now on. Among the above-mentioned exclusive traveling paths, when the water surface (liquid level) such as the sea, river, river, lake, swamp, pond, pool, etc. is used as the dedicated traveling path, the moving body 91 may be a ship body, a floating body, a dredger, etc. Such a liquid surface floating body is used. In addition, the moving body 91 when traveling on the above-described dedicated traveling paths is utilized for water bottom movement, underwater movement, water surface movement, underground movement, ground movement, ground movement, air movement, etc. It is something that can be done. However, depending on the embodiment, technical considerations may be required, such as taking waterproofing measures, taking airtight measures, taking safety measures, or taking other measures for the mobile body 91.

The moving body 91 that moves through the mechanism of the present invention may be applied not only to movement / conveyance / transportation of articles and the like, but also to movement / transportation of people, and movement / transportation of people and objects.

The winding / rewinding mechanism for linear bodies according to the present invention is versatile in this kind of technical field such as movement / transport / transport of goods, etc., movement / transport of people, and movement / transport of people and objects. It can be used for. The present invention eliminates the problems of the prior art for such a winding / rewinding mechanism for a linear body, and satisfies an accurate and stable operability, durability, cost reduction, etc. Probability is high.

DESCRIPTION OF SYMBOLS 11 Winding rewinding mechanism for linear bodies 21 Mounting base 22 Base plate 23 Bearing body 24 Bearing body 25 Bearing body 31 Motor | power_engine 32 Output shaft 33 Coupling 41 Central shaft 42 External guide surface 51 Winding cylinder 52 Central hole 53 Side plate portion 54 Alignment winding groove 55 Fixing tool 56 Fixing tool 57 Fixing tool 61 Screw pipe expansion and contraction body 62 Internal screw pipe 63 Male screw 64 External screw pipe 65 Female screw

71A Guide ring

71B Guide ring 72A Internal guide face 72B Internal guide face 73A鍔 part 73B ８１ part 81 linear body for forward winding 82 linear body for reverse winding 91 moving body 92 guide means for traveling the mobile body 93 fixing device LP loop-like part S1 rotating wheel for guidance S2 rotating wheel for guidance S3 rotation for guidance Wheel S4 Guide rotating wheel S5 Guide rotating wheel

Claims

It comprises a central shaft, a winding cylinder, a threaded tube telescopic body, two guide rings and a pair of bearing bodies as constituent elements, and the outer diameter of the central shaft and the inner and outer diameters of the two guide rings And the inner and outer diameters of the threaded tube telescopic body and the inner and outer diameters of the winding tube body [the outer diameter of the central axis <the inner and outer diameters of the two guide rings <the inner and outer diameters of the threaded tube stretching body <the inner and outer surfaces of the winding tube body Is set to satisfy the relationship of [diameter], and
An outer guide surface having a circumferential torque transmission function and an axial sliding function is formed on the outer peripheral surface of the central shaft, and
The winding cylinder is for winding and rewinding the linear body on the outer peripheral surface, and a side plate portion having a center hole is provided on one side surface and the other side surface is open. And
The internal threaded tube and the female screw, wherein the threaded tube expansion / contraction body is a combination of an internal threaded tube having a male thread on the outer peripheral surface and an external threaded tube having a female thread on the inner peripheral surface. The external threaded pipe having the inner peripheral surface is screwed by both male and female screws, and both the threaded pipes are combined inside and outside so as to be extendable in the axial direction, and
The pair of bearing bodies are for supporting both ends of the central axis so as to freely rotate forward and backward, and
An inner guide surface having a torque transmitting function in the circumferential direction and a sliding function in the axial direction is formed on the inner peripheral surfaces of the both guide rings for engaging with the outer guide surface of the central shaft. And
The center shaft is supported at both ends through the pair of bearing bodies so as to be rotatable forward and backward, and
The outer guide surface of the central shaft and the inner guide surfaces of the guide rings are engaged with each other, the guide rings are fitted into the outer peripheral portion of the central shaft, and the outer peripheral portion of the central shaft The both guide rings fitted together rotate together with the central axis and are movable along the axial direction of the central axis; and
The threaded pipe telescopic body is fitted on the outer peripheral part of the both guide rings fitted on the outer peripheral part of the central axis, and the central axis, the both guide rings, and the threaded pipe elastic body are arranged concentrically. And
The winding cylinder is fitted to the outer peripheral part of the screw tube telescopic body fitted to the outer peripheral part of the both guide rings, and the central shaft, the both guide rings, the screw pipe telescopic body, and the winding cylindrical body. Are concentrically arranged, and
The one guide ring, the internal threaded tube tip of the threaded tube telescopic body, and the side plate portion of the winding cylinder are fixed to each other, and the other guide ring and the internal thread of the threaded tube telescopic body The tube rear end is fixed to each other, and the external screw tube base end of the threaded tube expansion / contraction body is fixed to the one bearing body on the external screw tube base end side. A winding / rewinding mechanism for a linear body characterized by the above.
An outer guide surface of the central axis is formed by a spline guide surface in which recesses and projections along the length direction of the shaft are alternately arranged in the circumferential direction of the shaft, and a recess along the length direction of the tube, The inner guide surfaces of the two guide rings are formed by spline guide surfaces in which convex shapes are alternately arranged in the circumferential direction of the shaft, and the outer guide surfaces of the central shaft and the inner guide surfaces of the two guide rings are The winding / rewinding mechanism for a linear body according to claim 1, which is engaged with each other.
The linear body according to claim 1, wherein a linear body for normal winding and a linear body for reverse winding for synchronously winding and rewinding are provided on the outer peripheral surface of the winding cylinder. Winding and rewinding mechanism.
The winding / rewinding mechanism for a linear body according to claim 3, wherein the front end portion of the linear body for forward winding and the front end portion of the linear body for reverse winding are connected to a movable body that can reciprocate.
The moving body is any one selected from water bottom movement, underwater movement, water surface movement, underground movement, ground movement, ground movement, and air movement. Winding and unwinding mechanism for linear bodies.