Winding device

Abstract

To provide a winding device for rotating a crimping plug provided on a shaft, in which a gear member is rotatably arranged on a frame, thereby smoothing the operation or reducing the increase in weight. [Solution] A winding device 1 comprising a main frame 11 and a gear member 12 that is rotatably arranged with respect to the main frame 11 and has a hole SH through which a shaft passes, and to which a mounting portion for a winding plug is attached, wherein the gear member 12 is rotatably arranged with respect to the main frame 11 by an arc-shaped rotating guide surface 11112 provided on the main frame 11 side and a guide member 14 provided on the gear member 12 side that travels on the rotating guide surface 11112.

Description

Technical Field

[0001] The present invention relates to a winding device for rotating a tightening plug provided on a shaft.

Background Art

[0002] In an opening / closing device represented by a shutter, in which an opening / closing body is opened and closed in the vertical direction, a means for correcting the self-weight of the opening / closing body is provided in order to reduce the load during the opening / closing operation. As one of such means, there is a method using the elastic force of a spring. By setting the elastic force of the spring and the self-weight of the opening / closing body to be substantially balanced, the load caused by the self-weight of the opening / closing body is prevented (or reduced) during the opening / closing operation of the opening / closing body. During the installation of such an opening / closing device, in order to set the elastic force of the spring in accordance with the weight of the opening / closing body, an operation of tightening the spring by winding is performed, and a winding device that enables tightening by an electric tool or the like is used for this operation. Patent Document 1 and Patent Document 2 disclose techniques related to winding devices used for the spring tightening operation of such opening / closing devices.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the spring winding machine described in Patent Document 1, the spur gear is rotatably held on a frame (two plates) with a structure in which multiple guides (rollers, etc.) are provided between the two plates, and these multiple guides are arranged around the spur gear so as to surround it. In the technology of Patent Document 1, since the guides come into contact with the teeth of the spur gear, there is a risk of damaging the teeth of the spur gear, and there is also a problem that the operation is not very smooth. On the other hand, the spring winding machine described in Patent Document 2 is similar in that it has multiple guides (rollers, etc.) between two plates, but it is configured to have two discs smaller in diameter than the spur gear, sandwiching the spur gear, and these discs come into contact with the multiple guides. According to Patent Document 2, the above problem of Patent Document 1 can be solved, but because it is configured to have two discs stacked on top of the spur gear, the dimensions in the thickness direction increase, and the weight increases. In addition, because the weight of the rotating member increases, the rotational moment becomes larger, and the load on power tools, etc. also increases.

[0005] In view of the above, the present invention aims to provide a winding device for rotating a crimping plug provided on a shaft, in which a gear member is rotatably arranged on a frame, that has smoother operation or reduces the increase in weight. [Means for solving the problem]

[0006] (Composition 1) A winding device for rotating a crimping plug provided on a shaft, comprising: a main frame; a gear member rotatably disposed with respect to the main frame, having a hole through which the shaft passes, and having a mounting portion for the crimping plug attached thereto, wherein the gear member is rotatably disposed on the main frame by an arc-shaped rotating guide surface provided on the main frame side and a guide member provided on the gear member side that travels or slides on the rotating guide surface.

[0007] (Configuration 2) The winding device according to configuration 1, wherein the rotating guide surface has an opening, and the guide member is configured such that, regardless of the rotation angle of the gear member, it contacts the rotating guide surface at at least two points at both ends of the diameter of the arc of the rotating guide surface, or at least three points: a first point, a second point, and a third point located between the point opposite the diameter to the first point and the point opposite the diameter to the second point.

[0008] (Composition 3) The winding device according to configuration 1, wherein the guide member has an even number of contact points with respect to the rotating guide surface, which are arranged at equal intervals from one another, and the interior angles of the polygon with the contact points as vertices exceed the central angle of the opening of the rotating guide surface.

[0009] (Composition 4) The winding device according to configuration 1, wherein the guide member has n contact points, which are contact points with the rotating guide surface and are arranged at equal intervals from one another, and the central angle of the opening of the rotating guide surface is an angle less than 180(n-3) / n.

[0010] (Composition 5) A winding device according to any one of configurations 1 to 4, wherein the guide member is composed of a plurality of rotating bodies.

[0011] (Composition 6) The winding device according to any one of configurations 1 to 4, wherein the guide member is composed of a sliding member having an arc shape along the rotating guide surface.

[0012] (Composition 7) The winding device according to configuration 6, wherein the sliding member is a single C-shaped member.

[0013] (Composition 8) The winding device according to configuration 7, wherein the central angle formed by the C-shape is configured to be greater than or equal to the value obtained by adding 180 to the central angle of the opening of the rotating guide surface.

[0014] (Composition 9) A winding device according to any one of configurations 1 to 8, wherein at least a part of the gear member is separable, thereby forming an introduction portion for introducing the shaft into a hole through which the shaft passes, and further comprising a connecting member for connecting the separable gear member and a connecting bolt for connecting the connecting member to the gear member, wherein a through-screw hole is formed in the gear member for inserting and engaging the connecting bolt, the insertion side having an inner diameter larger than the outer diameter of the thread of the connecting bolt, and a screw hole for engaging the thread of the connecting bolt is formed further inside the insertion hole.

[0015] (Composition 10) The winding device according to configuration 9, wherein the divisible gear members are configured to be attached to and detached from one another only in a direction along the axis of the shaft, and the direction in which the connecting bolts are attached is also along the axis of the shaft.

[0016] (Composition 11) The winding device according to configuration 9 or 10, wherein the connecting bolt is attached to the connecting member with a screw structure to prevent it from falling off, and is provided with an enlarged diameter portion for manual turning.

[0017] (Composition 12) The winding device according to any one of configurations 1 to 11, wherein the mounting portion comprises a rotating arm attached to the gear member and rotating, and a pin member that fits into a fitting recess of the winding plug, the rotating arm has a through hole through which the pin member is inserted, the pin member has an engaging recess or engaging protrusion which is a recess or protrusion in a direction having a component perpendicular to the direction in which the pin member is inserted into the through hole, and the winding device comprises an engaging member which attaches the pin member to the rotating arm by engaging with the engaging recess or engaging protrusion of the pin member inserted into the through hole. Effects of the Invention

[0018] According to the present invention, it is possible to provide a winding device that smoothes the operation in a structure where a gear member is rotatably disposed on a frame, or reduces an increase in weight. Brief Description of the Drawings

[0019] [Figure 1] Figure showing the winding device of Embodiment 1 [Figure 2] Figure showing the front plate constituting the main body frame of the winding device of Embodiment 1 [Figure 3] Figure showing the gear member of the winding device of Embodiment 1 [Figure 4] Figure showing the split gear and the connecting member of the winding device of Embodiment 1 [Figure 5] Figure explaining the gear member of the winding device of Embodiment 1 [Figure 6] Figure showing the mounting portion attached to the gear member of the winding device of Embodiment 1 [Figure 7] Figure explaining the concept of the arrangement position of the guide member [Figure 8] Figure showing the winding device of Embodiment 2 [Figure 9] Figure showing the guide member of the winding device of Embodiment 2 [Figure 10] Figure explaining the concept of the arc-shaped guide member [Figure 11] Figure showing the winding device of Embodiment 3 [Figure 12] Figure showing the winding device of Embodiment 4 [Figure 13] Figure showing another example of the rail member [Figure 14] Figure showing the winding device of Embodiment 5 [Figure 15] Perspective view schematically showing an example of an opening / closing device (overhead door) [Figure 16] Figure showing an example of the mounting portion of the spring for compensating the self-weight of the opening / closing body [Figure 17] Schematic diagram showing the spring winding tightening operation [Modes for carrying out the invention]

[0020] The embodiments of the present invention will be described in detail below with reference to the drawings. Note that the following embodiments are merely examples of how the present invention can be implemented, and do not limit the present invention to their scope.

[0021] <Embodiment 1> First, we will describe an example of an opening / closing device that is used with the winding device 1 of this embodiment. Figure 15 shows the opening / closing device 100, which is the target of the winding device 1, and is a perspective view from the indoor side. Figure 16 shows the mounting part of the spring for compensating for the load due to the weight of the opening / closing body. The opening / closing device 100 is, for example, an opening / closing device that opens and closes an opening formed in a wall that separates the indoors from the outdoors, and more specifically, is an opening / closing device referred to as an overhead door or an overhead sliding door. As shown in Figure 15, the opening / closing device 100 is An opening / closing body 101 in which multiple panel bodies are connected so as to be rotatable to one another, A guide rail 102 that guides the movement of the opening / closing body 101, It includes a self-weight correction mechanism for correcting the load caused by the self-weight of the opening / closing body 101. As shown in Figures 15 and 16, the self-weight compensation mechanism is A wire rope 103 connected near the lower end of the opening / closing body 101, A drum 104 for winding up the wire rope 103, A shaft 105 connected to the drum 104, A crimping plug 108 is inserted through the shaft 105, The device includes a spring 106, one end of which is fixed to a bracket 107 that is fixed to the building structure, and the other end of which is fixed to a shaft 105 via a crimping plug 108.

[0022] Multiple rollers 1011 are provided at both ends in the width direction of the opening / closing body 101, and the guide rail 102 guides the movement of the rollers 1011. The opening / closing body 101 consists of multiple panel bodies connected to each other by hinges so as to be rotatable, and is movable along the guide rail 102 between the closed state shown in Figure 15 and the open state in which the opening / closing body 101 is in a nearly horizontal position at the top. In the self-weight compensation mechanism, the elastic force of the spring 106 and the self-weight of the opening / closing body 101 are set to be roughly balanced in order to reduce the load when the opening / closing body 101 is moved, etc. The shaft 105 is connected to a drum 104, which generates a rotational moment due to the weight of the opening / closing body 101 applied via a wire rope 103 (the drum 104 is fixed to the shaft 105), and a crimping plug 108, which generates a rotational moment due to the elastic force of a spring 106, is also connected. As a result, the rotational moment based on the elastic force of the spring 106 and the rotational moment based on the weight of the opening / closing body 101 act in opposite directions on the shaft 105 (they cancel each other out), and the load based on the weight of the opening / closing body 101 is canceled or reduced. The crimping plug 108 is a component used to set the elastic force of the spring 106 (to crimp the spring). As shown in Figure 16, the crimping plug 108 has a bolt 1082 which is a means of fixing it to the shaft 105, and a fitting recess 1081 which is used when rotating the crimping plug 108 (crimping the spring). The crimping plug 108 in this example has four fitting recesses 1081 arranged at 90-degree intervals on its outer circumference (there are fitting recesses at both ends in the diametrical direction). When the bolt 1082 is not tightened, the crimping plug 108 can rotate around the shaft 105 as its axis. When the bolt 1082 is tightened, the bolt comes into contact with the shaft and is fixed to the shaft 105. As described above, one end of the spring 106 is fixed to the bracket 107 and the other end is fixed to the crimping plug 108. By rotating the crimping plug 108, the spring 106 is twisted, imparting elastic force. In this state, the crimping plug 108 is fixed to the shaft 105, thereby imparting a rotational moment to the shaft 105.

[0023] Figure 17 is a schematic diagram showing an example of using the winding device 1 of this embodiment in the winding operation of a spring 106 provided on a shaft 105. The winding device 1 of this embodiment is a device for rotating a winding plug 108 provided on a shaft 105, and enables winding using a rotary tool T (such as an electric tool or air tool) so that winding work can be performed efficiently and safely (this point is also the same for the winding devices of each embodiment from Embodiment 2 onwards).

[0024] Figure 1 shows the winding device of Embodiment 1, where Figure 1(a) is a front view and Figure 1(b) is a side view. Hereafter, the side with the connecting member 15 will be referred to as the front, and the opposite side with the mounting portion 13 will be referred to as the rear. The direction from the front to the rear (or vice versa) will be referred to as the thickness direction, and the vertical direction in Figure 1(a) will be referred to as the vertical direction. The left-right direction in Figure 1(a) will be referred to as the left-right direction or the width direction. These are for the sake of explanation, and for example, which side will be referred to as the front can be arbitrarily determined.

[0025] The winding device 1 of this embodiment is Main frame 11, A gear member 12 is rotatably positioned relative to the main frame 11, has a shaft hole SH through which a shaft 105 passes, and has a mounting portion 13 attached to which a crimping plug 108 is attached, A guide member 14 provided on the gear member 12 side, A worm gear 17 is a rotational force transmission unit that transmits the rotational force obtained by the rotational force input unit 16 to the gear member 12, A handle 18, which is a gripping part for a person to hold, It is equipped with.

[0026] The main frame 11 is constructed by fastening a front plate and a rear plate together with a bolt B1 and a nut N1 via a spacer S1 (see Figure 1(b)). Note that in Figures 1(a) and 1(b), for the sake of clarity, only one bolt B1 (and one spacer S1 and nut N1) is labeled (in other figures, labels are omitted for components that are clearly understood to have a similar configuration).

[0027] Figure 2 shows the front plate 111, with Figure 2(a) being a side view and Figure 2(b) being a front view. The front plate 111 is a plate-shaped member, and is shaped to generally follow the outer circumference of the gear member 12. It has a C-shaped arm portion 1111 with an opening 11111 on its upper side, and a base portion 1112 with a window portion 11121 on its lower side. The C-shaped arm portion 1111 has an outer arc shape (the arc shape at both the left and right ends) with a radius larger than the radius of the gear member 12, and an inner arc shape with a radius smaller than the radius of the gear member 12. The opening 11111 serves as an entry point for positioning the shaft 105 into the shaft hole SH of the gear member 12, which will be described later, and forms the opening of the rotation guide surface 11112. In this embodiment, the opening 11111 is shown as being formed at the top, but the present invention is not limited to this, and for example, the opening may be formed on either the left or right side. The side surface that forms the inner arc shape of the arm portion 1111 constitutes the "arc-shaped rotating guide surface 11112 provided on the main frame side". The base portion 1112 rotatably supports the worm gear 17 (and its rotating shaft 171) and is also the portion for attaching the handle 18 (handle mounting portion 181). The handle mounting portion 181 is a plate-shaped member welded to the handle 18, which is a round bar-shaped member, and is sandwiched between the front plate and the rear plate and fixed with bolts. The handle mounting portion 181 has a screw hole formed therein that engages with the bolt B5 (see Figure 1(a)) that bolts the handle mounting portion 181 in place. The base portion 1112 has a window portion 11121 in which the worm gear 17 is positioned, and a hole H5 is formed through which a bolt B5 for bolting the handle mounting portion 181 is inserted. The hole 11122 formed in the base portion 1112 is a weight-reducing cutout. The front plate 111 has multiple holes H1 through which bolts B1 (see Figure 1(a)) are inserted to join it to the rear plate with a spacer S1 in between. As mentioned above, in Figure 1 only one bolt B1 (and one spacer S1 and nut N1) is labeled, but in Figure 2(a), a common bolt B1 is passed through each of the holes H1, each spacer S1 is passed through, and the bolts are fastened with nuts N1. The positions and number of bolts (the positions and number of holes H1 for that purpose) may be appropriately selected to obtain the necessary strength for the main frame 11. Furthermore, the spacers S1 through which the bolts B1 are inserted, which are provided adjacent to the rotating shaft 171 of the worm gear 17 (in this embodiment, there is one above the rotating shaft 171 and two below the rotating shaft 171 on each side (see Figure 1(a))), also function as support parts that rotatably hold the rotating shaft 171.

[0028] The rear plate has the same configuration as the front plate 111, so its description is omitted here (the same reference numerals as those used for the front plate 111 will be used hereafter). Note that, in the rear plate 111 (or either the front plate 111), the hole H5 for inserting the bolt B5 that fastens the handle mounting portion 181 is not necessarily required.

[0029] Figure 3 shows the gear member 12, where Figure 3(a) is a front view showing the state with the split gear 122 removed from the main gear 121, and Figure 3(b) is a partially cutaway cross-sectional view illustrating the insertion screw hole H2. The gear member 12 is configured such that a portion of it (the split gear 122) can be separated, and by removing this split gear 122, an introduction portion 1212 is formed that allows the shaft 105 to be introduced into the shaft hole SH through which the shaft 105 passes. The split gear 122 has an engaging projection 1221 that protrudes in the left-right direction, and the main gear 121 has an engaging recess 1211 that receives the engaging projection 1221 of the split gear 122. As a result, the main gear 121 and the split gear 122 are configured to be attached to and detached from each other only in the direction along the axis of the shaft 105 (i.e., the rotation axis of the gear member 12). The main gear 121 and the split gear 122 are connected to each other by a connecting member 15. The split gear 122 has a screw hole H3 formed therein for engaging the connecting bolt B3 (see Figure 1(a)) for attaching the connecting member 15. The main gear 121 also has a through screw hole H2 formed therein for inserting and engaging the connecting bolt B2 (see Figure 1(a)) for attaching the connecting member 15. As shown in Figure 3(b), the through-hole H2 has an insertion hole H21 on the insertion side (the side to which the connecting member 15 is attached) which has an inner diameter larger than the outer diameter of the threads of the connecting bolt B2, and a threaded hole H22 for engaging the threads of the connecting bolt B2 is formed further inside the through-hole H21. The axial direction of the hole in the through-hole H2 is along the axis of the shaft 105 (i.e., the rotation axis of the gear member 12), and therefore, the mounting direction of the connecting bolt B2 is also along the axis of the shaft 105, similar to the mounting direction of the split gear 122. Furthermore, the main gear 121 has a hole H4 through which a bolt B4 (see Figure 1(a)) for attaching the mounting portion 13 is inserted. The gear member 12 is provided with a bearing 14 (see Figure 1(a)), which is a rotating body (guide member) that travels on the rotation guide surface 11112 of the main frame 11. The gear member 12 is provided with a screw hole H6 for engaging a bolt B6 that rotatably supports the bearing 14. In this embodiment, six bearings 14 are arranged evenly in the circumferential direction (arranged at equal intervals from one another) to form a regular hexagon.

[0030] Figure 4 shows the state in which the connecting member 15 is attached to the split gear 122, and Figure 4(a) is a front view, Figure 4(b) is a side view, and Figure 4(c) is a side view of the connecting bolt B2. The connecting member 15 is a plate-shaped member and has a hole H3 through which a connecting bolt B3 for connecting to the split gear 122 is inserted, and a screw hole H2 for engaging a connecting bolt B2 for connecting to the main gear 121. The connecting member 15 has an arc-shaped recess formed on its upper side so as not to interfere with the bearing 14 which is rotatably attached to the split gear 122, and also has dimensions in the width direction such that a screw hole H2 can be formed at least beyond a certain range on the split gear 122. The connecting bolt B2 is a partially threaded bolt with a slender shank, and has a shank section B22 and a threaded section B21 at its tip. Furthermore, the connecting bolt B2 is a high-head bolt, with the head B23 on the base end side being higher than the body detail B22, and the head B23 is equipped with an enlarged diameter section B231 for hand-turning. These features make it easy to turn by hand.

[0031] Figure 5 is an explanatory diagram (a schematic diagram for explanatory purposes) regarding the attachment of the split gear 122 to the main gear 121. When attaching the split gear 122 to the main gear 121, first, the connecting member 15 is attached to the split gear 122 with the connecting bolt B3 (see Figure 4). Also, the connecting bolt B2 is pre-fitted into the screw hole H2 of the connecting member 15 (see Figure 5(a)). As mentioned above, the connecting bolt B2 is a partially threaded bolt with a slender body, and when attached to the connecting member 15, the threaded portion B21 of the connecting bolt B2 protrudes from the rear surface of the connecting member 15, and the slender part B22 of the body is positioned in the screw hole H3 (it is attached to the connecting member 15 with a screw structure that prevents it from falling out). Next, the split gear 122, to which the connecting member 15 is attached, is attached to the main gear 121 by the connecting bolt B2. The connecting bolt B2 is pre-attached to prevent it from falling off the connecting member 15, and the direction in which the split gear 122 is attached to the main gear 121 and the direction in which the connecting bolt B2 is inserted are the same, resulting in excellent workability. In addition, as mentioned above, the tip of the connecting bolt B2 protrudes from the rear surface of the connecting member 15, and this part can be engaged by hooking it into the insertion hole H21 (a drilled hole for the connecting bolt B2) (see Figure 5(b)), providing a good grip when engaging the split gear 122 with the main gear 121. Furthermore, the connecting bolt B2 is a high-head bolt and has an enlarged diameter section B231, making it easy to turn by hand. These features make it easy to work with even one hand. This operation is performed when attaching and detaching the winding device 1 to the shaft 105, and although it is an operation performed at a height, the ease of operation and work efficiency are good, and thus the safety of the operation can be enhanced.

[0032] As shown in Figure 1(b), the gear member 12 is fitted with a mounting portion 13, which is an attachment portion for the crimping plug 108. The mounting portion 13 includes a rotating arm 131 that is attached to the gear member 12 and rotates, a pin member 132 that fits into the fitting recess 1081 (see Figure 16) of the crimping plug 108, and a screw 133 which is an engaging member that attaches the pin member 132 to the rotating arm 131. Figure 6 shows the mounting portion 13 attached to the gear member 12 (main gear 121), with Figure 6(a) being a side view, Figure 6(b) being a rear view, and Figure 6(c) being a side view showing the pin member 132. The rotating arm 131 is an L-shaped member in side view, and has a mounting surface 1311 for the gear member 12, an arm portion 1312 that protrudes to the rear, and a ring portion 1313 that holds the pin member 132. The mounting surface 1311 has a screw hole H4 for engaging a bolt B4 that attaches to the gear member 12. The rotating arm 131 is attached to the gear member 12 via a spacer S2 to avoid interference with the main frame 11. The arm portion 1312 and the ring portion 1313 fixed (welded) to the tip of the arm portion 1312 have holes formed in them for inserting the pin member 132 in the vertical direction (the holes are of a diameter that does not allow insertion of the enlarged diameter portion 1323 at the base end of the pin member 132). In addition, screw holes H7 for engaging the screw 133 are formed on the side surface of the ring portion 1313. The pin member 132 has a ring-shaped recess 1321 at its base end, where it is positioned inside the ring portion 1313 when attached to the arm portion 1312, and is sandwiched between ring-shaped protrusions 1322. The ring-shaped recess 1321 is positioned opposite the screw hole H7 of the ring portion 1313 when attached to the arm portion 1312 (when the pin member 132 is inserted into the ring portion 1313 until the enlarged diameter portion 1323 abuts against it). Therefore, the pin member 132 is attached to the arm portion 1312 (mounting portion 13) by inserting the pin member 132 through the ring portion 1313 and tightening the screw 133 into the screw hole H7 of the ring portion 1313. This configuration offers excellent workability in attaching and detaching the pin member 132 (attaching it to the crimping plug 108). Note that there may be one screw 133, or multiple screws 133 may be provided. The pin member 132 is provided with an "engaging recess or engaging projection that has a directional component perpendicular to the direction in which the pin member is inserted into the insertion hole." Furthermore, the ring portion 1313 and the screw 133 "are equipped with an engaging member that attaches the pin member to the rotating arm by engaging with the engaging recess or engaging projection of the pin member inserted through the insertion hole."

[0033] In this embodiment, the rotational force input section 16 has a hexagonal bolt shape that fits with a socket wrench and is connected to the worm gear 17 via the rotating shaft 171 (see Figure 1(a)). The worm gear 17 is positioned in the window portion 11121 of the main frame 11 (as described above, the rotating shaft 171 is rotatably held by the main frame 11) and meshes with the gear member 12 which is rotatably held by the main frame 11. Therefore, the winding device 1 is configured such that when rotational force is input to the rotational force input unit 16, the gear member 12 (and the mounting unit 13 attached thereto) rotates. As shown in Figure 1(a), the gear member 12 of this embodiment is provided with six bearings (rotating bodies (guide members)) 14, and these bearings 14 are configured to run on the rotation guide surface 11112 of the main frame 11. Therefore, the gear member 12 is mounted to the main frame 11 so as to rotate smoothly, and the rotational force input from the rotational force input unit 16 can be efficiently transmitted to the mounting unit 13 (the crimping plug 108 attached thereto).

[0034] An example of how to use the winding device 1 of this embodiment, which has the above configurations, will be outlined below. First, the winding device 1 is attached to the shaft 105. This attachment is done by removing the split gear 122 (which is integrated with the connecting member 15) from the main gear 121 by loosening the connecting bolt B2 (without removing the connecting bolt B2 from the connecting member 15, but only loosening it enough to release the engagement with the screw hole H22 of the main gear 121), and then inserting the shaft 105 through the resulting introduction section 1212. With the shaft 105 positioned at the shaft hole SH, the split gear 122 (which is integrated with the connecting member 15) is attached to the main gear 121. As described above, the winding device 1 of this embodiment offers excellent workability in this attachment process. Next, the pin member 132 is fitted into the fitting recess 1081 (see Figure 16) of the winding plug 108, and the pin member 132 is attached to the ring portion 1313 of the mounting portion 13. As described above, the winding device 1 of this embodiment is also excellent in terms of the workability of attaching and detaching the pin member 132. This results in the state shown in Figure 17(b), and preparations for tightening are made (the bolt 1082 of the tightening plug 108 is loosened, allowing the tightening plug 108 to rotate relative to the shaft 105). As shown in Figure 17(a), when the rotary tool T is engaged with the rotational force input unit 16 and rotational force is applied, the worm gear 17 rotates via the rotating shaft 171, and the gear member 12 that meshes with it also rotates. As a result, the mounting part 13 attached to the gear member 12 and the tightening plug 108 attached thereto also rotate, and the spring 106 is tightened. After the winding is complete, the winding device 1 is removed from the shaft 105 by following the reverse procedure of installation (according to the winding device 1 of this embodiment, the removal process is just as easy as the installation process).

[0035] As described above, according to the winding device 1 of this embodiment, a bearing (rotating body (guide member)) 14 is provided on the gear member 12 side, which has an arc-shaped rotating guide surface 11112 provided on the main frame 11 side and is configured to run on this rotating guide surface 11112. As a result, the gear member 12 can rotate smoothly, and the rotational force input from the rotational force input unit 16 can be efficiently transmitted to the mounting unit 13 (the winding plug 108 attached thereto). In addition, as described above, the device offers excellent workability in terms of attaching and detaching it from the shaft 105.

[0036] In this embodiment, the guide member on the gear member 12 side that contacts the arc-shaped rotating guide surface 11112 provided on the main frame 11 side is given as an example in which there are six bearings (rotating bodies). However, the present invention is not limited to this, and it is sufficient to have four or more rotating bodies.

[0037] Figure 7 illustrates the concept of how guide members attached to a rotating member to rotatably hold a gear member can be arranged to suppress play in the gear member and ensure proper holding. Assuming the “rotation guide surface” is a perfect, uninterrupted circle, then, as shown in Figure 7(a), guide members A and B positioned at two points on the diameter of the circle can suppress play in the gear member having these guide members and hold the gear member in place. When the guide members are not positioned at two points on the diameter, the minimum number of contact points is three. The arrangement of these three contact points to suppress play in the gear member is such that, for any two points A and B, the third point C is positioned between point A', which is symmetrical with respect to point A (on the opposite side of the diameter), and point B', which is symmetrical with respect to point B (on the opposite side of the diameter). If point C is to the right of point A-A' (indicated by the arrow) in Figure 7(b), the gear cannot suppress play. Similarly, if point C is to the left of point B-B' (on the left side of Figure 7(b)), the gear cannot suppress play. In other words, the presence of point C between points A' and B' suppresses play in the gear member and allows the gear member to be held. To put it another way, if the contact points are "three points such that for any angle of diameter, at least one point exists on both sides of that line (diameter)", then it is possible to suppress play in the gear member and hold the gear member. Therefore, even if the main frame 11 has an opening (opening) 11111 and the "rotating guide surface" cannot be made into a continuous circular shape, the gear member can be held in place by providing a guide member that "contacts the rotating guide surface at least at two points, at both ends of the diameter of the arc of the rotating guide surface, regardless of the rotation angle of the gear member" or "contacts the rotating guide surface at at least three points, regardless of the rotation angle of the gear member, namely a first point, a second point, and a third point located between the point opposite the diameter to the first point and the point opposite the diameter to the second point." This suppresses play in the gear member. When there is an opening, this condition cannot be satisfied with just three points; it is necessary to provide a guide member that contacts the rotating guide surface at at least four points. If the number of contact points is even and the polygon formed by the contact points is a regular polygon (i.e., if an even number of contact points are evenly distributed in the circumferential direction of the gear member), there will be multiple pairs of points on the diameter as shown in Figure 7(a). Under these conditions, the gear member can be held in place by configuring the interior angles of the regular polygon (regular polygon with an even number of angles) to have angles greater than or equal to the central angle of the opening of the rotation guide surface. On the other hand, if the number of contact points is odd and the polygon formed by the contact points is a regular polygon (i.e., if an odd number of contact points are evenly distributed around the gear member), then the three points shown in Figure 7(b) must be present "regardless of the rotation angle of the gear member". As mentioned above, if there is an opening, three points alone are not sufficient, so by setting n to an odd number of 5 or more, and "configuring so that the central angle of the opening in the rotation guide surface has an angle less than 180(n-3) / n", the play of the gear member can be suppressed and the gear member can be held in place.

[0038] In this embodiment, the guide member on the gear member 12 side that contacts the arc-shaped rotating guide surface 11112 provided on the main frame 11 side is an example in which the guide member is a bearing (composed of multiple rotating bodies), but the present invention is not limited to this, and for example, a cylindrical boss member or other member that slides on the arc-shaped rotating guide surface may also be used. The following embodiment 2 shows an example in which the guide member is composed of a single arc-shaped sliding member instead of multiple rotating bodies.

[0039] <Embodiment 2> Figure 8 shows the winding device of Embodiment 2, with Figure 8(a) being a front view, Figure 8(b) a side view, and Figure 8(c) a rear view (showing the state without the pin member 132 attached). For configurations similar to those in Embodiment 1, the same reference numerals as in Embodiment 1 are used, and their descriptions here are simplified or omitted. The winding device 1-2 of this embodiment differs from the winding device 1 of Embodiment 1 in that the guide member provided on the gear member side is composed of a sliding member (a single C-shaped member) having an arc shape along the rotation guide surface 11112.

[0040] Figure 9 shows the C-shaped member 14-2, which is a guide member in this embodiment, with Figure 9(a) being a side view and Figure 9(b) being a front view. The C-shaped member 14-2 is a plate-like member whose outer arc shape is configured to have a radius slightly smaller than the arc shape of the rotation guide surface 11112, so that it slides along the rotation guide surface 11112. The C-shaped member 14-2 has a hole H6-2 through which a bolt B6-2 (see Figure 8(a)) for attachment to the gear member 12-2 is inserted, and a hole H4 through which a bolt B4 is inserted. As described in Embodiment 1, bolt B4 is the bolt for attaching the mounting part 13 and is shared.

[0041] The gear member 12-2 differs from the winding device 1 of Embodiment 1 in terms of the shape of the connecting member 15-2 for attaching the split gear 122 to the main gear 121 of the gear member 12-2, and the configuration of the connecting bolts. The connecting member 15-2 is a plate-shaped member with an oval outer diameter and is configured to be attached to the split gear 122 with four connecting bolts B3-2, which is different from Embodiment 1. However, there is no difference in the function of attaching the split gear 122 to the main gear 121 (in Embodiment 1, it is configured so as not to interfere with the bearing 14, but in this embodiment, it is simply not necessary). Furthermore, the connecting bolt B2-2 for attaching to the main gear 121 is not a bolt as described in Embodiment 1 (Figure 4(c)), but has been simplified to a simple bolt (Embodiment 1 is advantageous in that it has the functions described in Embodiment 1). In this embodiment, the guide member attached to the gear member 12-2 is a C-shaped member 14-2 instead of the bearing 14 in Embodiment 1. Therefore, there is a difference in the number of screw holes formed on the gear member 12-2 for attaching it, but there is no difference in the concept of the gear member. Although the outer diameter shape of the main frame 11 differs slightly between Embodiments 1 and 2, this does not result in a conceptual difference. As described above, in this embodiment, the bolt B4 used to attach the mounting portion 13 is used as the bolt used to attach the C-shaped member 14-2. Since it is possible to attach the C-shaped member 14-2 using only this bolt, it is possible to eliminate the need for separate bolts or screw holes to attach the guide member to the gear member. The other components are the same as those of the winding device 1 in Embodiment 1, so their explanation is omitted here.

[0042] In the winding device 1-2 of this embodiment, an arc-shaped rotating guide surface 11112 is provided on the main frame 11 side, and a C-shaped member (guide member) 14-2 configured to slide on this rotating guide surface 11112 is provided on the gear member 12-2 side. As a result, similar to Embodiment 1, the gear member 12-2 can rotate smoothly, and the rotational force input from the rotational force input unit 16 can be efficiently transmitted to the mounting unit 13 (the winding plug 108 attached thereto). Furthermore, the C-shaped member 14-2 is located inside the main frame 11 and does not overlap with the main frame 11 in the thickness direction, so it does not increase the thickness dimension of the device as in Patent Document 2. Moreover, the C-shaped member 14-2 is an arc-shaped member with a hollow central portion, and is lighter than the configuration in Patent Document 2 in which two discs are placed on top of a spur gear, thus reducing the increase in the weight of the device and the increase in the rotational moment of the rotating body.

[0043] In this embodiment, the "sliding member having an arc shape along the rotation guide surface" serving as the guide member is given as an example of a single member. However, the present invention is not limited to this, and may be composed of, for example, multiple divided arc-shaped members. When a guide member is constructed using multiple arc-shaped members, the arrangement method that can suppress play in the gear member and hold it in place is the same as that described in Embodiment 1 (it is sufficient if the "arc" is considered as a set of contact points, and the points in the "set of points" obtained by the multiple arcs satisfy the above conditions). Figure 10 is a conceptual diagram illustrating the range of arc formation in a C-shaped member 14-2, which is a single arc-shaped member, that can suppress play and hold the gear member. As shown in Figure 10, by configuring the C-shaped member 14-2 such that "the central angle formed by the C shape is greater than or equal to the central angle θ of the opening 11111 on the rotating guide surface plus 180", two points on the diameter in Figure 7(a) (either point on the arc of the C shape) are always present, thus preventing looseness and holding the gear member.

[0044] <Embodiment 3> Figure 11 shows the winding device 1-3 of Embodiment 3, where Figure 11(a) is a front view, Figure 11(b) is a side view, and Figure 11(c) is a rear view (shown without the pin member 132 attached). For configurations similar to those in Embodiment 1 or 2, the same reference numerals as in Embodiment 1 or 2 are used, and their descriptions herein are simplified or omitted. In the winding device 1-3 of this embodiment, A rail member RC provided on the gear member side, A bearing (rotating body) 19, which is a guide member provided on the outer surface of the main frame 11-3, runs on this rail member RC, The gear member 12-2 is rotatably held relative to the main frame 11-3 by this mechanism.

[0045] The rail member RC is provided on the gear member side and is a rail member that is curved in an arc shape when viewed from the front. It is a plate-shaped member that has enough thickness to protrude to the outside of the main frame 11-3 (if the rail member RC is provided on the front side of the gear member, it protrudes further forward than the main frame 11-3, and if it is provided on the rear side, it protrudes further rearward than the main frame 11-3). The mounting structure of the rail member RC to the gear member 12-2 is the same as the mounting structure of the C-shaped member 14-2 to the gear member 12-2 in Embodiment 2.

[0046] The bearing (rotating body) 19 is rotatably supported relative to the main frame 11-3 by a bolt B7 which serves as the axis of rotation. Accordingly, a screw hole for engaging the bolt B7 is formed in the front plate 111-3 of the main frame 11-3. In this example, the guide member is described as being composed of multiple rotating bodies, but the present invention is not limited to this, and may also be a cylindrical boss member or other member that slides on the rail member RC.

[0047] According to the winding device 1-3 of this embodiment, by having a rail member RC provided on the gear member side and a guide member provided on the outer surface of the main frame 11-3 that runs on the rail member RC, the gear member 12-2 can rotate smoothly, similar to embodiments 1 and 2, and the rotational force input from the rotational force input unit 16 can be efficiently transmitted to the mounting unit 13 (the winding plug 108 attached thereto).

[0048] The concept of arranging the contact points of the guide member with respect to the arc-shaped (opening) rail member RC is basically the same as that described in Embodiment 1. However, unlike Embodiment 1, since the contact is on the outside of the arc, contact at "two points on the diameter" is insufficient, and it is necessary to maintain a contact relationship based on the three-point contact described in Embodiment 1. However, this is not necessarily required if the outer circumference of the rail member RC is located close to the inner side surface of the arm portion of the main frame (and can also be supported by the side surface that forms the arc shape on the inside of the arm portion).

[0049] <Embodiment 4> Figure 12 shows the winding device 1-4 of Embodiment 4, where Figure 12(a) is a front view, Figure 12(b) is a side view, and Figure 12(c) is a rear view (shown without the pin member 132 attached). For configurations similar to those in Embodiments 1 to 3, the same reference numerals as in Embodiments 1 to 3 are used, and their descriptions here are simplified or omitted. In the winding device 1-4 of this embodiment, A rail member RC provided on the gear member side, A rotating body that runs on this rail member RC, and a guide member consisting of only one rotating body (bearing 19-41) positioned on the outer surface of the main frame 11-4 on the side opposite to the part where the gear member 12-2 contacts the worm gear 17, which is the rotational force transmission part, On the side opposite to the part of the gear member 12-2 that contacts the rotational force transmission part (worm gear 17), a second guide member consisting of a single rotating body (bearing 19-42) that contacts the gear member 12-2 is arranged on the main frame 11-4, The meshing between the gear member 12-2 and the rotational force transmission part (worm gear 17), The gear member 12-2 is rotatably held relative to the main frame 11-4 by this mechanism.

[0050] Since the rail member RC is the same as in Embodiment 3, its description is omitted here. The bearing (rotating body) 19-41 is the same as one of the bearings 19 in Embodiment 3, and its description is omitted here. The bearing 19 only needs to be capable of contacting the rail member RC in a way that suppresses the upward movement of the rail member RC.

[0051] The second guide member, bearing 19-42, is provided between the front plate 111-4 and the rear plate 111 and is positioned to contact the gear member 12-2 from its upper side (in a manner that suppresses upward movement of the gear member 12-2). In this embodiment, the bearing 19-42 is rotatably supported by the bolt B1 used to fasten the front plate and the rear plate, as described in Embodiment 1 (the bearing 19-42 is installed in place of the spacer S1 that was provided in the same location in Embodiment 1). In this example, the rotating body (second guide member) in contact with the gear member 12-2 is a bearing, but the present invention is not limited to this, and the second guide member may be composed of, for example, a gear (a gear that can rotate freely) that meshes with the gear member.

[0052] According to the winding device 1-4 of this embodiment, the mechanism for rotatably holding the gear member 12-2 with respect to the main frame 11-4 is simplified, and the device can be made lighter.

[0053] In Embodiments 3 and 4, the rail member RC is given as an example of a plate-shaped member with a thickness that extends to the outside of the main frame 11-3. However, the entire rail member does not need to have this thickness. As shown in the rail member RC' illustrated in Figure 13, it is also possible to reduce weight by providing rib-shaped side walls RC-1 on the outer circumference and making the plate thickness of the other parts thinner (or by providing appropriate weight-reducing holes).

[0054] <Embodiment 5> Figure 14 shows the winding device 1-5 of Embodiment 5, where Figure 14(a) is a front view with the switching arm RA closed, Figure 14(b) is a side view with the switching arm RA closed, Figure 14(c) is a front view with the switching arm RA open, and Figure 14(d) is a side view with the switching arm RA open. For configurations similar to those in Embodiments 1 to 4, the same reference numerals as in Embodiments 1 to 4 are used, and their descriptions here are simplified or omitted. In the winding device 1-5 of this embodiment, A switching arm RA is provided to switch between a state in which the opening 11111 is closed (Figures 14(a), (b)) and a state in which the opening 11111 is open (Figures 14(c), (d)) relative to a C-shaped arm portion 1111 (main frame 11) having an opening 11111 on its upper side. A third guide member provided on this switching arm RA is a bearing (rotating body) 19-5 which switches between a state of contact with the gear member 12-5 at the opening 11111 and a state of non-contact as the switching arm RA opens and closes, The meshing between the gear member 12-5 and the rotational force transmission part (worm gear 17), The gear member 12-5 is rotatably held relative to the main frame 11 by this mechanism.

[0055] The switching arm RA consists of a front switching arm RA1 and a rear switching arm RA2. The front switching arm RA1 is a plate-shaped member having an arc shape when viewed from the front, and holes are formed at both ends for inserting bolts to connect to the arm portion 1111. In this embodiment, these bolts are shared with the bolts B1 used to fasten the front plate and rear plate as described in Embodiment 1 (however, this is not limited to this, and separate bolts for attaching the switching arm RA may also be provided). Furthermore, a hole is formed in the center of the front switching arm RA1 for inserting the bolt B8 that supports the bearing 19-5. The rear switching arm RA2 has the same configuration as the front switching arm RA1. The switching arm RA is attached to the main frame 11, closing the opening 11111 as shown in Figures 14(a) and (b). By removing either of the bolts B1 at both ends (or both), the opening 11111 is opened as shown in Figures 14(c) and (d) (this allows for the attachment / detachment of the shaft 105). In this example, the switching arm RA is described as being composed of two members, a front switching arm RA1 and a rear switching arm RA2. However, the switching arm RA may also be a single member (for example, a plate-shaped member positioned between the front plate 111 and the rear plate 111 and having the same thickness as the gear member 12-5).

[0056] The bearing 19-5 is rotatably supported on the switching arm RA by bolt B8, and in the closed state shown in Figures 14(a) and (b), it contacts the gear member 12-5 from its upper side (contacting it in a way that can suppress upward movement of the gear member 12-5). The lower side of the gear member 12-5 is meshed with the worm gear 17, and its downward movement is restricted, so the gear member 12-5 is held so as not to move in the vertical direction (but rotatably). Also, because the gear member 12-5 is meshed with the worm gear 17, its movement in the horizontal direction is restricted (movement in the thickness direction is restricted by the main frame 11). As a result, the gear member 12-5 is held rotatably relative to the main frame 11.

[0057] According to the winding device 1-5 of this embodiment, the mechanism for rotatably holding the gear member 12-5 with respect to the main frame 11 is simplified, and the device can be made lighter.

[0058] In this example, the rotating body (third guide member) in contact with the gear member is a bearing, but the present invention is not limited to this, and the third guide member may be composed of, for example, a gear (a gear that can rotate freely) that meshes with the gear member. Furthermore, although the third guide member is given as an example in which it is composed of a single rotating body, the present invention is not limited to this, and the third guide member may be composed of multiple rotating bodies. In addition, although the present invention is given as an example in which the third guide member is composed of a rotating body, the present invention is not limited to this, and the third guide member may be composed of a member having an inwardly curved guide surface (a surface that slides with the gear member) in an arc shape that generally follows the outer circumference shape of the gear member on the surface facing the gear member.

[0059] In this embodiment, the third guide member is shown in contact with the gear member as an example, but the present invention is not limited to this, and the third guide member may be configured to contact the C-shaped member 14-2 attached to the gear member shown in Embodiment 2, or the rail member RC attached to the gear member shown in Embodiments 3 and 4. In this case, there is a problem if the rail member or the like is an arc-shaped member with an opening, so for example, an arc-shaped member that forms a continuous circle with the C-shaped member 14-2 or the rail member RC is provided on the split gear 122, and the split gear 122 is attached to the main gear 121 to form a continuous circle with the C-shaped member 14-2 or the rail member RC.

[0060] Furthermore, the various configurations and concepts derived from each of the embodiments described above may be combined with each other. For example, the third guide member and switching arm described in Embodiment 5 may be combined with other embodiments.

[0061] In each embodiment, a worm gear 17 is used as an example of a rotational force transmission unit that transmits the rotational force obtained by the rotational force input unit 16 to the gear member. However, the present invention is not limited to this, and any configuration that can appropriately transmit the rotation of the rotational force input unit to the gear member may be used, such as using a bevel gear or adding a reduction gear.

[0062] In the embodiment, an overhead door was described as an example of an object to which the spring tightening is performed. However, the present invention is not limited to this, and can be applied to any opening and closing device in which an opening and closing body moves vertically, such as a shutter, which uses a spring as a self-weight compensation mechanism to compensate for the load due to the weight of the opening and closing body, and is equipped with a tightening plug for tightening the spring. [Explanation of Symbols]

[0063] 1...winding device 11...Main frame 111...Front plate (rear plate) 1111...Arm section 11111...Opening (Opening) 11112...Rotation guide surface 12...Gear component 121...Main gear 122... Split gear SH...shaft hole H2...Through-hole screw hole 13...Mounting part 131... Rotating Arm 132...Pin component 133...Screw (engaging member) 14...Bearings (rotating body (guide member)) 14-2...C-shaped member (sliding member (guide member) having an arc shape) 15...Connecting member 16... Rotational force input section 17...Worm gear (rotational force transmission part) 171... Rotation axis 18...Handle (grip) 19...Bearing (rotating body (guide member)) 19-42...Bearing (Rotating body (second guide member)) 19-5...Bearing (Rotating body (Third guide member)) B2...Connecting bolts B231... Expanded diameter section RA... Switchable Arm RC...rail components 100...Opening and closing device 105...shaft 106... Spring 108...Crimp plug

Claims

1. A winding device for rotating a crimping plug mounted on a shaft, The main frame and A gear member is rotatably positioned relative to the main frame, has a hole through which the shaft passes, and has a mounting portion attached to the crimping plug. Equipped with, A winding device in which the gear member is rotatably positioned on the main frame by means of an arc-shaped rotating guide surface provided on the main frame side and a guide member provided on the gear member side that travels or slides on the rotating guide surface.

2. The winding device according to claim 1, wherein the rotating guide surface has an opening, and the guide member is configured such that, at any rotation angle of the gear member, it contacts the rotating guide surface at at least two points at both ends of the diameter of the arc of the rotating guide surface, or at least three points: a first point, a second point, and a third point located between the point opposite the diameter to the first point and the point opposite the diameter to the second point.

3. The winding device according to claim 1, wherein the guide member has an even number of contact points with respect to the rotating guide surface, which are arranged at equal intervals from one another, and the interior angles of the polygon with the contact points as vertices exceed the central angle of the opening of the rotating guide surface.

4. The winding device according to claim 1, wherein the guide member has n contact points, which are five or more odd numbers, that are contact points with respect to the rotating guide surface and are arranged at equal intervals from each other, and the central angle of the opening of the rotating guide surface is an angle less than 180(n-3) / n.

5. The winding device according to any one of claims 1 to 4, wherein the guide member is composed of a plurality of rotating bodies.

6. The winding device according to any one of claims 1 to 4, wherein the guide member is composed of a sliding member having an arc shape along the rotating guide surface.

7. The winding device according to claim 6, wherein the sliding member is a single C-shaped member.

8. The winding device according to claim 7, wherein the central angle formed by the C-shape is configured to be greater than or equal to the value obtained by adding 180 to the central angle of the opening of the rotating guide surface.

9. At least a portion of the gear member is separable, thereby forming an introduction portion for introducing the shaft into the hole through which the shaft passes. The device comprises a connecting member for connecting the divisible gear members, and a connecting bolt for connecting the connecting member to the gear members, A winding device according to any one of claims 1 to 4, wherein a through-threaded hole is formed in the gear member, which is a hole for inserting and engaging the connecting bolt, the through-threaded hole having an inner diameter larger than the outer diameter of the threads of the connecting bolt on the insertion side, and a threaded hole for engaging the threads of the connecting bolt is formed further inside the through-threaded hole.

10. The winding device according to claim 9, wherein the divisible gear members are configured to be attached to and detached from one another only in a direction along the axis of the shaft, and the direction in which the connecting bolts are attached is also along the axis of the shaft.

11. The winding device according to claim 9, wherein the connecting bolt is attached to the connecting member with a screw structure to prevent it from falling off, and is provided with an enlarged diameter portion for manual turning.

12. The mounting portion comprises a rotating arm attached to the gear member and rotating, and a pin member that fits into the fitting recess of the crimping plug, The rotating arm has an insertion hole through which the pin member is inserted, The pin member is provided with an engaging recess or engaging protrusion which is a recess or protrusion in a direction having a component perpendicular to the direction in which the pin member is inserted into the insertion hole, A winding device according to any one of claims 1 to 4, comprising an engaging member that attaches the pin member to the rotating arm by engaging with the engaging recess or engaging projection of the pin member inserted through the through hole.

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