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, that can make the operation smoother or reduce the size of the device. [Solution] A winding device 1 comprises a main frame 11 and a gear member 12 that is rotatably positioned relative to the main frame 11, has a hole through which a shaft passes, and has a mounting portion for a winding plug attached to it, wherein the main frame 11 has an arc-shaped curved inner curved guide surface 11311 configured to follow the outer circumference of the gear member 12.

Description

Technical Field

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

[0002] In an opening / closing device represented by a shutter, in which the 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 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, an operation of tightening the spring by winding is performed to set the elastic force of the spring in accordance with the weight of the opening / closing body, and a winding device that enables winding and tightening with a power tool or the like is used for this operation. A technique related to a winding device used for the spring winding and tightening operation of such an opening / closing device is disclosed in Patent Document 1. Prior Art Documents Patent Documents

[0003] Patent Document 1 Japanese Patent No. 7497270 Summary of the Invention Problems to be Solved by the Invention

[0004] In the spring winding machine described in Patent Document 1, a spur gear is rotatably held on a frame (two plates) with a structure in which multiple guides (rollers) are provided between the two plates, and these multiple rollers are arranged around the spur gear. In the technology of Patent Document 1, there is a problem that the operation is not very smooth because the rollers are in contact with the teeth of the spur gear. Also, if the rollers are made smaller, the play in the operation increases, and if the rollers are made too small, there is a risk that the operation of the spur gear may be hindered, so the rollers need to have a certain diameter, and therefore it is difficult to make the device smaller.

[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 can make the operation smoother or reduce the size of the device. [Means for solving the problem]

[0006] (Composition 1) A winding device for rotating a crimping plug provided on a shaft, comprising: a main frame; and a gear member rotatably arranged 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 main frame has an arc-shaped curved inner curved guide surface configured to follow the outer circumference of the gear member.

[0007] (Configuration 2) The winding device according to configuration 1, wherein the inner curved guide surface has an arc shape centered on the center of the gear member.

[0008] (Composition 3) The winding device according to configuration 1 or 2, wherein the main frame comprises a side wall erected inward from the inner curved guide surface, the side wall covering the front side of the outer circumference of the gear member, and the rear side wall covering the rear side of the outer circumference of the gear member, thereby providing an arc-shaped guide groove.

[0009] (Composition 4) The winding device according to any one of configurations 1 to 3, wherein the main frame is constructed by stacking multiple plates, each divided in the thickness direction, on top of each other.

[0010] (Composition 5) The winding device according to configuration 4, wherein the front plate, which is the frontmost of the plurality of plates, has the front side wall, and the rear plate, which is the rearmost of the plurality of plates, has the rear side wall.

[0011] (Composition 6) The winding device according to configuration 5, further comprising an intermediate plate positioned between the front plate and the rear plate, wherein the front plate, the rear plate, and the intermediate plate all have an inner arc shape, and the inner arc shape of the intermediate plate has a larger radius than the inner arc shapes of the front plate and the rear plate.

[0012] (Composition 7) The winding device according to configuration 6, comprising: a rotational force input section into which rotational force is input; a rotational force transmission section that transmits the rotational force obtained by the rotational force input section to the gear member; and a gripping section, wherein the intermediate plate is divided into an upper intermediate plate on the upper side of the rotational force input section and a lower intermediate plate on the lower side, and the upper intermediate plate is divided so as to be positioned on one side and the other side of the joint between the gear member and the rotational force transmission section, and the lower intermediate plate is divided so as to be positioned on one side and the other side of the gripping section.

[0013] (Composition 8) The winding device according to configuration 7, wherein the rotating shaft of the rotational force transmission unit is held between the upper intermediate plate and the lower intermediate plate.

[0014] (Composition 9) At least a part of the gear member is configured to be splittable, whereby an introduction portion for introducing the shaft into the hole through which the shaft passes is formed, the winding device according to any one of Structures 1 to 8, comprising a connecting member for connecting the splittable gear member, and a connecting bolt for connecting the connecting member to the gear member, wherein a through-threaded hole is formed in the gear member, the through-threaded hole being a hole into which the connecting bolt is inserted and threaded, the through-hole having an inner diameter larger than the outer diameter of the thread of the connecting bolt on the insertion side, and a threaded hole for threading the thread of the connecting bolt is formed deeper than the through-hole.

[0015] (Structure 10) The winding device according to Structure 9, wherein the splittable gear member is configured to be attachable to and detachable from each other only in the direction along the axis of the shaft, and the mounting direction of the connecting bolt is also the direction along the axis of the shaft. Effects of the Invention

[0016] According to the present invention, it is possible to provide a winding device capable of smoothing the operation in a structure in which a gear member is rotatably disposed on a frame in a winding device for rotating a tightening plug provided on a shaft, or reducing the size of the device. Brief Description of the Drawings

[0017] [Figure 1] Figure showing the winding device according to the embodiment of the present invention [Figure 2] Figure showing a front plate constituting the main body frame of the winding device of the embodiment [Figure 3] Figure showing an upper intermediate plate and a lower intermediate plate constituting the main body frame of the winding device of the embodiment [Figure 4] Figure for explaining the main body frame of the winding device of the embodiment [Figure 5] Figure showing the gear member of the winding device of the embodiment [Figure 6] Figure showing the connecting member of the winding device of the embodiment [Figure 7] Diagram showing the mounting portion of the winding device according to the embodiment [Figure 8] Explanatory diagram relating to the attachment of the mounting portion to the tightening plug [Figure 9] Perspective view showing an outline of an example of an opening / closing device (overhead door) [Figure 10] Diagram showing an example of the mounting portion of a spring for correcting the self-weight of the opening / closing body [Figure 11] Schematic diagram showing the spring tightening operation [Mode for Carrying Out the Invention]

[0018] Hereinafter, embodiments of the present invention will be specifically described with reference to the drawings. Note that the following embodiments are one form for embodying the present invention, and are not intended to limit the present invention within its scope.

[0019] First, an opening / closing device (one example) that is the usage target of the winding device 1 of the present embodiment will be described. FIG. 9 is a diagram showing the opening / closing device 100 that is the usage target of the winding device 1, and is a perspective view seen from the indoor side. Further, FIG. 10 is a diagram showing the mounting portion of the spring for correcting the load caused by the self-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 surface separating the indoor side and the outdoor side, and more specifically, is an opening / closing device referred to as an overhead door, an oversliding door, or the like. As shown in FIG. 9, the opening / closing device 100 includes an opening / closing body 101 in which a plurality of panel bodies are connected to each other so as to be mutually rotatable, a guide rail 102 that guides the movement of the opening / closing body 101, and a self-weight correction mechanism for correcting the load caused by the self-weight of the opening / closing body 101. As shown in FIG. 9 and FIG. 10, the self-weight correction mechanism includes a wire rope 103 connected near the lower end portion of the opening / closing body 101, a drum 104 that winds 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.

[0020] 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 9 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 10, 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.

[0021] Figure 11 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. Furthermore, the winding device 1 of this embodiment is a small winding device used in relatively small opening and closing devices (and therefore the opening and closing body is light, and the spring 106 and winding plug 108 are also small), such as opening and closing devices installed in garages. Figure 1 shows a winding device according to an embodiment of the present invention, where Figure 1(a) is a front view, Figure 1(b) is a side view, and Figure 1(c) is a rear view. Hereafter, the side with the connecting member 14 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.

[0022] 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 a crimping plug 108. A rotational force input unit 16 receives rotational force from a rotary tool T, A worm gear 15 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 17, which is a gripping part for a person to hold, It is equipped with.

[0023] The main frame 11 is constructed by stacking multiple plates, which are divided in the thickness direction, on top of each other. The front plate 111 is the frontmost of the multiple plates, The rear plate 112, which is the rearmost of the multiple plates, An intermediate plate 113 is positioned between the front plate 111 and the rear plate 112, It is composed of.

[0024] 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 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 arm portion 1111 is formed in an arc shape, with the radius of its outer arc being larger than the radius of the gear member 12, and the radius of its inner arc being smaller than the radius of the gear member 12. The opening 11111 serves as an inlet for positioning the shaft 105 into the shaft hole SH of the gear member 12, which will be described later. In this embodiment, the opening (inlet) 11111 is shown as being formed at the top, but the present invention is not limited to this, and for example, the opening (inlet) may be formed on either the left or right side. However, forming the opening (inlet) at the top as in this embodiment is preferable because it allows the upper intermediate plate described below to be common on both the left and right sides, thus enabling the commonality of parts. The base portion 1112 rotatably supports the worm gear 15 (and its rotating shaft 151) and is also the portion for attaching the handle 17 (handle mounting portion 171). The handle mounting portion 171 is a plate-shaped member welded to the handle 17, 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 171 has a screw hole formed therein that engages with the bolt B5 (see Figure 1(a)) for bolting the handle mounting portion 171. The base portion 1112 has a window portion 11121 in which the worm gear 15 is positioned, and a hole H5 is formed through which a bolt B5 for bolting the handle mounting portion 171 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 multiple plates that make up the main frame 11 together. In Figure 1(a), for the sake of clarity, only one bolt is labeled, but in Figure 2(b), etc., a common bolt B1 is passed through each hole H1 and fastened with a nut N1 (see Figure 1(c). Here too, only one bolt is labeled). The positions and number of bolts used for fastening (the positions and number of holes H1 for this purpose) may be appropriately selected to obtain the necessary strength for the main frame 11. In this example, multiple plates are bolted together, but the present invention is not limited to this, and any method that can join each member together with the necessary strength, such as bonding or welding (or a combination thereof), may be used (the same applies to joining other members).

[0025] Since the rear plate 112 has the same configuration as the front plate 111, its description is omitted here (hereinafter, in the description of the configuration of the rear plate 112, the same reference numerals as those used for the front plate 111 will be used). Note that, in the rear plate 112 (or either the front plate 111), the hole H5 for inserting the bolt B5 that fastens the handle mounting portion 171 is not necessarily required.

[0026] The intermediate plate 113 is divided into an upper intermediate plate located above the rotating shaft 151 of the worm gear 15, which is the rotation input part, and a lower intermediate plate located below it. Furthermore, the upper intermediate plate is divided into a left upper intermediate plate and a right upper intermediate plate, and the lower intermediate plate is divided into a left lower intermediate plate and a right lower intermediate plate. In other words, the intermediate plate 113 is composed of four plates.

[0027] Figure 3(a) is a front view showing the upper left intermediate plate 1131, and Figure 3(b) is a side view. The left upper intermediate plate 1131, which is both the main frame 11 and the intermediate plate 113, is a plate-like member with an arc-shaped curve when viewed from the front. The outer part of the arc shape has a shape that is (approximately identical) to the outer part of the arc shape of the arm portion 1111 of the front plate 111. On the other hand, the inner part of the arc shape (inner arc shape) is an arc with a larger radius than the inner part of the arc shape of the arm portion 1111 of the front plate 111. When the left upper intermediate plate 1131 is placed on top of the front plate 111, it forms a step with respect to the arm portion 1111 of the front plate 111. The inner arc shape of the left upper intermediate plate 1131 is an arc of a circle with a diameter slightly larger than the tip circle diameter of the gear member 12, and the inner side surface of the left upper intermediate plate 1131 (the right side surface 11311 in the inner arc-shaped portion) constitutes an "inner curved guide surface that is curved in an arc shape and configured to follow the outer circumference of the gear member." The holes H1 formed in the upper left intermediate plate 1131 are holes for inserting bolts B1 to join multiple plates that make up the main frame 11 together, and are formed in the same position and number as the holes H1 in the front plate 111.

[0028] The right upper intermediate plate has a symmetrical configuration with the left upper intermediate plate 1131, and when flipped over, it becomes identical to the left upper intermediate plate 1131; therefore, its explanation is omitted here (the same reference numerals as the left upper intermediate plate will be used hereafter). The left upper intermediate plate 1131 and the right upper intermediate plate 1131 are divided so as to be positioned on one side and the other side of the meshing portion between the gear member 12 and the worm gear 15, which is the rotational force transmission part.

[0029] Figure 3(c) is a front view showing the lower left intermediate plate 1132, and Figure 3(d) is a side view. The left lower intermediate plate 1132, which is both the main frame 11 and the intermediate plate 113, is a plate-shaped member that has a shape on its left side that follows (or is substantially the same as) the outer diameter shape of the base portion 1112 of the front plate 111. The holes H1 formed in the lower left intermediate plate 1132 are for inserting bolts B1 to join multiple plates that make up the main frame 11 together, and are formed in the same position and number as the holes H1 in the front plate 111. Furthermore, the hole 11322 formed in the lower left intermediate plate 1132 is a weight-reducing cutout and is formed to correspond to the hole 11122 formed in the base portion 1112 of the front plate 111. However, from a purely functional standpoint, the weight-reducing hole 11322 does not necessarily need to match the position or shape of the weight-reducing hole 11122 in the front plate 111 (although from an aesthetic standpoint, it is preferable for the holes to be aligned).

[0030] The right lower intermediate plate has a symmetrical configuration with the left lower intermediate plate 1132, and when flipped over, it becomes identical to the left lower intermediate plate 1132; therefore, its explanation is omitted here (the same reference numerals as the left lower intermediate plate will be used hereafter). The left lower intermediate plate 1132 and the right lower intermediate plate 1132 are divided so as to be positioned on one side and the other side of the handle 17 (handle mounting portion 171), which is the gripping portion.

[0031] Figure 4 is a diagram illustrating the main frame 11 (a diagram illustrating the positional relationships of each component, etc.). Figure 4(a) shows the state in which the left upper intermediate plate 1131, right upper intermediate plate 1131, left lower intermediate plate 1132, and right lower intermediate plate 1132 are arranged relative to the rear plate 112. Figure 4(b) shows the same as Figure 4(a) with the gear component 12 and worm gear 15 added (a diagram showing the relative positional relationships). The inner arc shape of the left upper intermediate plate 1131 and the right upper intermediate plate 1131 is an arc shape centered on the center (axis of rotation) of the gear member 12, and as described above, forms an inner curved guide surface 11311 that is curved in an arc shape and configured to follow the outer circumference of the gear member 12. As shown in Figure 1(b), in this embodiment, four intermediate plates 113 are joined so as to overlap in the thickness direction, and therefore, the inner curved guide surface 11311 is formed by overlapping four left upper intermediate plates 1131 and four right upper intermediate plates 1131. The inner arc shape of the arm portion 1111 of the rear plate 112 (and front plate 111) is an arc with a smaller radius than the inner arc shape of the left upper intermediate plate 1131 and the right upper intermediate plate 1131. This constitutes a side wall 11112 that is "a side wall erected inward from the inner curved guide surface, which covers the rear side of the outer circumference of the gear member" (and "a front side wall that covers the front side of the outer circumference of the gear member"). The inner curved guide surface 11311 formed by the intermediate plate 113 and the side wall 11112 formed by the rear plate 112 and the front plate 111 form a groove (arc-shaped guide groove) which has a recessed shape in cross-section, and the gear member 12 is rotatably supported by this groove. The smooth inner curved guide surface 11311 that follows the outer circumference shape of the gear member 12 allows the gear member 12 to rotate smoothly. As shown in Figure 4(b), the worm gear 15 is positioned relative to the window portion 11121 of the rear plate 112 (and front plate 111) and meshes with the gear member 12. The rotating shaft 151 of the worm gear 15 is rotatably held between the lower ends 11313 of the left upper intermediate plate 1131 and the right upper intermediate plate 1131, and the upper ends 11321 of the left lower intermediate plate 1132 and the right lower intermediate plate 1132. "The rotating shaft of the rotational force transmission unit is held between the upper intermediate plate and the lower intermediate plate." As can be seen from Figure 4(b), in the winding device 1 of this embodiment, the gear members and rotational force transmission parts, which are the driven and rotated components, are rotatably held by the main frame 11 itself, and there is no separate configuration for holding these rotating components, so it is possible to make the device as small as possible.

[0032] Figure 5 shows the gear member 12, where Figure 5(a) is a front view showing the state with the split gear 122 removed from the main gear 121, and Figure 5(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 14. 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 14. 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 14. As shown in Figure 5(b), the through-hole H2 has an insertion hole H21 on the insertion side (the side to which the connecting member 14 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 H21 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.

[0033] Figure 6 shows the connecting member 14, with Figure 6(a) being a front view and Figure 6(b) being a side view. The connecting member 14 is a plate-shaped member with an arc shape when viewed from the front, 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. In this embodiment, the winding device 1 is a small winding device, and therefore the space for providing the connecting member 14 is limited. Consequently, it is formed in an arc shape along the shaft hole SH. However, if there is sufficient space for placement, it may be made into any shape.

[0034] To attach the split gear 122 to the main gear 121, first attach the connecting member 14 to the split gear 122 with the connecting bolt B3. Also, pre-fit the connecting bolt B2 into the screw hole H2 of the connecting member 14. The connecting bolt B2 is a partially threaded bolt with a slender body, and when attached to the connecting member 14, the tip of the connecting bolt B2 (the threaded portion) protrudes from the rear surface of the connecting member 14, with the unthreaded portion positioned in the screw hole H2 (acting as a fall-prevention screw). Next, the split gear 122, to which the connecting member 14 is attached, is attached to the main gear 121 using the connecting bolt B2. The connecting bolt B2 is pre-attached to prevent it from falling off the connecting member 14, 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, and this part can be engaged by hooking it into the insertion hole H21 (a drilled hole for the connecting bolt B2), providing a good grip when engaging the split gear 122 with the main gear 121. Also, as can be seen from Figure 1(b), the connecting bolt B2 is a high-head bolt, making it easy to grasp by hand. These features make it easy to work with one hand. This operation is performed when attaching and detaching the winding device 1 to the shaft 105, and although it is work at height, the good workability and efficiency enhance safety during the operation.

[0035] As shown in Figure 1, 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 pin member 132 that fits into a fitting recess 1081 (see Figure 10) of the crimping plug 108, and a pin mounting portion 131 that is joined to the gear member 12 and holds the pin member 132. Figure 7 shows the pin mounting portion 131, with Figure 7(a) being a side view, Figure 7(b) a rear view, and Figure 7(c) a top view (note that the arrangement is inverted vertically compared to Figure 1). The pin mounting portion 131 is an L-shaped member in side view, and has a mounting surface 1311 for the gear member 12 and a pin holding surface 1312 for holding the pin member 132. The mounting surface 1311 has a screw hole H4 for engaging a bolt B4 (see Figure 1(a)) that is attached to the gear member 12. As shown in Figure 1(b), the pin mounting portion 131 is attached to the gear member 12 via a spacer S to avoid interference with the main frame 11. As shown in Figure 7, the pin holding surface 1312 has an engagement recess 1313 for engaging the pin member 132. The engagement recess 1313 has an opening that opens to the rear. This opening has an opening width that allows the ring-shaped recess 1321 of the pin member 132 to be inserted, and at a position recessed from the opening, the recess is wider than the opening width. Figure 8 shows an explanatory diagram regarding the attachment of the mounting portion 13 to the crimping plug 108. As shown in Figure 8(a), first, the pin member 132 is inserted into the fitting recess 1081 (see Figure 10) of the winding plug 108. The pin member 132 has a ring-shaped recess 1321 at its base end, which is sandwiched between ring-shaped protrusions 1322. The winding device 1 is moved in the axial direction of the shaft 105 so that this ring-shaped recess 1321 is inserted through the opening of the engagement recess 1313, resulting in the mounting state shown in Figure 8(b). As described below, when the gear member 12 is rotated, the pin member 132 engages and is held in a position deeper than the opening of the engaging recess 1313 (the part of the recess that is wider than the opening width).

[0036] The use of the winding device 1 of this embodiment, which has the above configurations, will now be outlined. 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 14) from the main gear 121 by loosening the connecting bolt B2 (without removing the connecting bolt B2 from the connecting member 14, but only loosening it enough to release the engagement with the screw hole H22 of the main gear 121), forming an introduction section 1212, and inserting it onto the shaft 105 from there. With the shaft 105 positioned at the shaft hole SH, the split gear 122 (which is integrated with the connecting member 14) 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, while inserting the pin member 132 into the fitting recess 1081 (see Figure 10) of the crimping plug 108, the pin member 132 is engaged with the engaging recess 1313 of the mounting portion 13, as described above. This results in the state shown in Figure 11(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 11(a), when a rotary tool T is engaged with the rotational force input part 16 (in this embodiment, a hexagonal bolt shape that fits with a socket wrench) and rotational force is applied, the worm gear 15 rotates via the rotating shaft 151, 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 workability is excellent, similar to the installation process).

[0037] As described above, the winding device 1 of this embodiment has a smooth inner curved guide surface 11311 that follows the outer circumference shape of the gear member 12, which allows the rotation of the gear member 12 to be smooth. Furthermore, since the main frame 11 itself holds the gear member 12 in a rotatable manner, the device can be made as compact as possible. In addition, as described above, it offers excellent workability in terms of installation on the shaft 105.

[0038] In this embodiment, the intermediate plates 113 (each of the upper left intermediate plate, upper right intermediate plate, lower left intermediate plate, and lower right intermediate plate) are shown as being composed of four plates stacked on top of each other. However, the present invention is not limited to this, and the number of plates stacked in the thickness direction may be arbitrary, and it may also be composed of a single plate in the thickness direction. Furthermore, the front plate or rear plate and the intermediate plates (left upper intermediate plate, right upper intermediate plate, left lower intermediate plate, right lower intermediate plate) may be integrally formed (e.g., by machining or 3D printing).

[0039] In this embodiment, a worm gear 15 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 12. 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.

[0040] In this 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]

[0041] 1...winding device 11...Main frame 111...Front plate 112...Rear plate 113...Intermediate plate 1131... Upper middle plate on the left, upper middle plate on the right 11311...Inner curved guide surface 1132...Left lower intermediate plate, right lower intermediate plate 12...Gear component 121...Main gear 122... Split gear SH...shaft hole H2...Through-hole screw hole 13...Mounting part 14...Connecting member 15...Worm gear (rotational force transmission part) 151... Rotation axis 16... Rotational force input section 17...Handle (grip) 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 main frame has an arc-shaped curved inner curved guide surface configured to follow the outer circumference of the gear member.

2. The winding device according to claim 1, wherein the inner curved guide surface has an arc shape centered on the center of the gear member.

3. The winding device according to claim 1 or 2, wherein the main frame comprises a side wall erected inward from the inner curved guide surface, the side wall comprising a front side wall covering the front side of the outer peripheral portion of the gear member, and a rear side wall covering the rear side of the outer peripheral portion of the gear member, thereby providing an arc-shaped guide groove.

4. The winding device according to claim 3, wherein the main frame is constructed by stacking a plurality of plates divided in the thickness direction on top of each other.

5. The winding device according to claim 4, wherein the front plate, which is the frontmost of the plurality of plates, has the front side wall, and the rear plate, which is the rearmost of the plurality of plates, has the rear side wall.

6. It has an intermediate plate positioned between the front plate and the rear plate, The front plate, the rear plate, and the intermediate plate all have an inward arc shape. The winding device according to claim 5, wherein the inner arc shape of the intermediate plate has a larger radius than the inner arc shapes of the front plate and the rear plate.

7. A rotational force input unit into which rotational force is input, A rotational force transmission unit that transmits the rotational force obtained by the rotational force input unit to the gear member, The gripping part, Equipped with, The winding device according to claim 6, wherein the intermediate plate is divided into an upper intermediate plate on the upper side of the rotational force input section and a lower intermediate plate on the lower side, and the upper intermediate plate is divided so as to be positioned on one side and the other side of the joint between the gear member and the rotational force transmission section, and the lower intermediate plate is divided so as to be positioned on one side and the other side of the gripping section.

8. The winding device according to claim 7, wherein the rotating shaft of the rotational force transmission unit is held between the upper intermediate plate and the lower intermediate plate.

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, The winding device according to claim 1 or 2, wherein a through-threaded hole is formed in the gear member, which is a hole for inserting and engaging the connecting bolt, and the insertion side has an inner diameter larger than the outer diameter of the threads of the connecting bolt, and a threaded hole for engaging the threads of the connecting bolt is formed further inside the through-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.

Images