JP6351091B2 - Winding device - Google Patents

Description

  The present invention relates to a winding device that winds an opening / closing body that opens and closes an opening.

  Conventionally, for example, a winding device described in Patent Document 1 is known.

  This conventional winding device includes, for example, a shaft body that is a fixed shaft, a wheel body that is rotatably disposed on the outer peripheral side of the shaft body, one end side is attached to the wheel body, and the other end side is a shaft body. And an urging body that urges the wheel in a winding direction in which the opening / closing body is wound.

JP 2004-360261 A

  However, in the above-described conventional winding device, since the entire wheel body is integrally formed of a synthetic resin that is slippery with respect to the outer peripheral surface of the shaft body, the wheel body may be damaged due to insufficient strength, for example. .

  This invention is made | formed in view of such a point, and it aims at providing the winding apparatus which can suppress the failure | damage of a wheel body.

Winding apparatus 請 Motomeko 1 described, a winding device for winding a closing member for opening and closing the opening, a shaft, and rotatably disposed a wheel body on the outer peripheral side of the shaft body, A biasing body that biases the wheel body, and at least a portion of the wheel body that rotates while sliding with respect to the outer peripheral surface of the shaft body is slidable with respect to the outer peripheral surface of the shaft body. Of the wheel body, at least a portion of the wheel body to which the biasing body is attached is composed of a second material stronger than the first material, and the wheel body is A wheel main body configured by the first material and rotating while sliding with respect to an outer peripheral surface of the shaft body, and a biasing body mounted by the second material and mounted on the wheel main body And the wheel main body is on the outer peripheral side of the shaft body And rotatably fitted a cylindrical portion, provided on the outer peripheral surface of the cylindrical portion, and a bulge portion that the biasing member mounting portion is attached to the side surface, the urging member attachment part an annular portion attached to the side surface of the bulging portion of the wheel body portion, provided on the annular portion, and a cover portion covering the outer peripheral surface of the cylindrical portion of the wheel body portion, with the A biasing body is attached to the covering portion of the biasing body mounting portion.

The winding device according to a second aspect is the winding device according to the first aspect, wherein the urging member mounting portion is not in contact with the outer peripheral surface of the cylindrical portion of the wheel main body portion.

Winding apparatus according to claim 3, wherein, in the winding apparatus according to claim 1 or 2, the cover portion of the urging member attachment part, a screw hole portion for urging body mounting is formed and the wheel body portion The cylindrical portion is formed with a hole facing the screw hole.

The winding device according to claim 4 is the winding device according to any one of claims 1 to 3, wherein the annular portion of the urging body mounting portion is configured by a single plate body formed in an annular shape, The single plate body is connected to the two arcuate plate portions that are spaced apart from each other via the insertion hole and the two arcuate plate portions that are spaced apart from each other via the insertion hole. And two triangular plate portions .

The winding device according to claim 5 is the winding device according to any one of claims 1 to 4, wherein the annular portions of the urging body mounting portions are located on opposite sides of the insertion hole as a center. It is attached to the side surface of the bulging portion of the wheel body by means.

The winding device according to a sixth aspect is the winding device according to the fifth aspect, wherein the attachment means hole is formed outward from the covering portion with respect to the insertion hole.

Winding apparatus according to claim 7, wherein, in the winding apparatus according to any one of claims 1 to 6, the urging body attachment part, in which is mounted detachably on the wheel body portion.

  The winding device according to an eighth aspect is the winding device according to any one of the first to seventh aspects, wherein the first material is a synthetic resin and the second material is a metal.

  According to the present invention, at least a portion of the wheel body that rotates while sliding with respect to the outer peripheral surface of the shaft body is formed of the first material that is slippery with respect to the outer peripheral surface of the shaft body. Since the portion to which the urging body is attached is made of the second material having a strength higher than that of the first material, the wheel body can be prevented from being damaged while maintaining the slidability with respect to the shaft body of the wheel body.

It is a front view of the winding device concerning one embodiment of the present invention. It is a top view of a winding apparatus same as the above. It is a top view of the wheel body of a winding device same as the above. It is a side view of a wheel body same as the above. It is the perspective view seen from the upper side of a wheel body same as the above. It is the perspective view seen from the downward side of a wheel body same as the above. It is a perspective view which shows the state before attaching the biasing body attaching part of a wheel body same as the above to a wheel main-body part. It is a side view of the switchgear provided with the same winding device. It is operation | movement explanatory drawing of a winding apparatus same as the above, (a) is a figure at the time of winding start, (b) is a figure in the middle of winding, (c) is a figure at the time of winding completion.

  An embodiment of the present invention will be described with reference to FIGS.

  In FIG. 8, reference numeral 1 denotes an opening / closing device. The opening / closing device 1 is an in-vehicle shutter mounted on a vehicle such as a fire engine. The opening / closing device 1 opens and closes an opening 3 of a container 2 such as a storage rack provided on a vehicle body (not shown).

  The container 2 has a box shape that opens toward the front of the switchgear 1 (leftward in FIG. 8), and has a bottom plate portion 5, and side plate portions 6 are provided at both left and right ends of the bottom plate portion 5. A top plate portion 7 is disposed between the upper end portions of the both side plate portions 6. A protruding plate portion 8 protrudes downward from a front end portion of the top plate portion 7, and a lintel 10 is attached to a lower end portion of the protruding plate portion 8. The interior of the housing 2 is a housing space 9, and the front opening of the housing 2 is an opening 3 for taking objects into and out of the housing space 9.

  The opening / closing device 1 includes a guide rail 11 that is a pair of left and right guide bodies that are spaced apart from each other via an opening 3, and is moved up and down (moved) while being guided by the both guide rails 11. 3 is a curtain-type opening / closing body (shutter curtain) 12 that opens and closes 3 and a manual type winding in which an upper end side (base end side) of the opening / closing body 12 is attached and the opening / closing body 12 is rewound into a substantially cylindrical shape. A take-off device 13.

  Further, the opening / closing device 1 is configured so that the guide rotating body 14 that guides the opening / closing body 12 while rotating in front of the winding device 13, and the opening / closing body 12 does not jump up from the guide rotating body 14 in the vicinity of the guide rotating body 14. And a corner guide 15 for guiding.

  As shown in FIG. 8, the opening / closing body 12 has an opening / closing body main body 21 configured by a plurality of slats and the like that are rotatably connected to each other. A plurality of belt-like attachment portions 22 are provided at the base end portion (base end portion in the closing movement direction) of the opening / closing body main body portion 21, and these attachment portions 22 are attached to the outer peripheral side of the winding device 13 by bolts 20 as attachment tools. It is attached.

  The opening / closing body main body portion 21 has a distal end portion (a distal end portion in the closing movement direction) that is in contact with the bottom plate portion 5 when the opening portion 3 is closed and with a longitudinal contact that contacts the lintel 10 when the opening portion 3 is opened. An opening / closing body lower end 23 which is a portion is provided.

  A handle 24 having an operation button 25 for unlocking is provided at the center in the left-right direction of the lower end 23 of the opening / closing body. Engaging portions (not shown) whose position can be changed to a locked position and an unlocked position are provided on both ends in the left-right direction of the lower end 23 of the opening / closing body, and this engaging portion is locked by a spring (not shown). It is urged to return to.

  In the state where the engaging portion is located at the locking position, the opening and closing direction of the opening / closing body 12 (the opening / closing body 12 is moved by the engagement between the engaging portion and the engagement receiving portion (not shown) of the guide rail 11). The movement (rise) in the winding direction) is restricted, and as a result, the closed state of the opening / closing body 12 is maintained. On the other hand, when the engagement portion is repositioned to the unlocked position against the biasing force of the spring by operating the operation button 25 of the handle portion 24, the engagement between the engagement portion and the engagement receiving portion is released, and the opening / closing is performed. Movement of the body 12 in the opening movement direction is allowed.

  On the other hand, the winding device 13 includes a shaft body 31 that is a fixed shaft having a cylindrical shape with a longitudinal shape in the left-right direction, as shown in FIGS. 1, 2, and 8. The shaft body 31 is fixed to a bracket 27 attached to a bracket receiver 26 fixed to the container 2. In other words, a single metal shaft 31 is fixedly installed between a pair of left and right brackets 27 that are spaced apart from each other.

  Further, the winding device 13 is rotatably arranged on the outer peripheral side of the shaft body 31, and a plurality of cylindrical members rotating in the winding direction and the rewinding direction with respect to the shaft body 31, for example, two pairs in the left and right directions. A wheel body 32 which is one rotating body is provided. Between the left and right wheel bodies 32, there is a single metal wheel cover body (opening / closing body winding portion) 33 that is formed in a cylindrical shape with a longitudinal shape that rotates integrally with the both wheel bodies 32. It is fixedly installed. The two wheel bodies 32 have the same configuration.

  Further, for example, in FIG. 1, the winding device 13 directs the wheel body 32 on the left side (left side when viewed from the front) in the winding direction in which the opening / closing body 12 is wound around the outer peripheral surface of the wheel cover body 33. A coil spring 34, which is one urging body made of metal for urging, is provided, and the coil spring 34 is disposed on the outer peripheral side of the shaft body 31 so as to be deformable.

  Here, as shown in FIGS. 3 to 7, the wheel body 32 is not integrally formed of a single material as a whole, but at least on the outer peripheral surface of the shaft body 31 of the wheel body 32. The portion that rotates while sliding is made of a synthetic resin (for example, polyacetal “POM”), which is a first material that easily slides on the outer peripheral surface of the shaft body 31, and at least the coil of the wheel body 32. The portion to which the spring 34 is attached is made of a metal (for example, a cold-rolled steel plate “SPCC”), which is a second material stronger than the synthetic resin.

  That is, for example, the wheel body 32 is formed of only a synthetic resin that is a first material, and is formed integrally with a cylindrical synthetic resin wheel body 41 that rotates while sliding with respect to the outer peripheral surface of the shaft body 31; An urging body mounting portion 42 that is an annular metal wheel reinforcing portion that is integrally formed of only a second material metal and is detachably attached to the left and right sides of the wheel main body portion 41 to reinforce the wheel main body portion 41; The left and right pair of urging body attachment portions 42 have a plurality of metal attachment means 43 for detachably attaching to the wheel body portion 41.

  Each attachment means 43 is constituted by, for example, a bolt 43a and a nut 43b that can be screwed into the bolt 43a. Further, the two biasing body mounting portions 42 forming a pair have a symmetrical configuration.

  The wheel main body 41 has a cylindrical portion 46 that is rotatably fitted to the outer peripheral side of the shaft body 31. The cylindrical portion 46 is formed in a cylindrical shape having an axial direction in the left-right direction, and the inner peripheral surface of the cylindrical portion 46 is rotatably fitted to the outer peripheral surface of the shaft body 31, and the fitted inner circumference The surface rotates while sliding with respect to the outer peripheral surface of the shaft body 31. On both sides in the axial direction of the cylindrical portion 46, circular hole portions 47 are formed penetratingly forming a pair spaced apart from each other. Each hole 47 is a fool hole that does not have a thread groove. A flat surface 48 along the axial direction is formed on the outer peripheral surface of the cylindrical portion 46.

  An annular bulging portion 50 that bulges radially outward from the outer peripheral surface of the cylindrical portion 46 is integrally provided on the outer peripheral surface of the axially central portion of the cylindrical portion 46. The bulging portion 50 is formed in a shape corresponding to the wheel cover body 33, and the outer peripheral surface of the bulging portion 50 is fitted and fixed to the inner peripheral surface of the end portion in the axial direction of the wheel cover body 33. .

  That is, as shown in FIG. 1, one end (left end) in the axial direction of the cylindrical wheel cover body 33 that winds the opening / closing body 12 is formed on the outer peripheral surface of the bulging portion 50 of the wheel body 41 of the left wheel body 32. It is fixedly attached by a fixture (for example, rivet) 49, and the other axial end portion (right end portion) of the wheel cover body 33 is the outer periphery of the bulging portion 50 of the wheel body portion 41 of the right wheel body 32. It is fixedly attached to the surface with a fixture (for example, rivet) 49. Thus, the wheel cover body 33 is fixed to the wheel bodies 32 on both the left and right sides. And the attachment part 22 of the base end side of the opening-closing body 12 is attached to the outer peripheral side of the wheel cover body 33 with the volt | bolt 20 screwed together by the fixing nut part 19 of the wheel cover body 33 (refer FIG. 8). ).

  Further, the left and right side surfaces of the bulging portion 50 are formed in a planar shape along a direction orthogonal to the axial direction of the cylindrical portion 46, and a metal urging body mounting portion is provided on each planar side surface. 42 is detachably attached by attachment means 43.

  That is, the bulging portion 50 of the wheel body 41 is sandwiched from the left and right sides by the pair of urging body mounting portions 42, and each urging body mounting portion 42 is only against the side surface of the bulging portion 50. Directly fixed. In other words, each urging body mounting portion 42 is directly fixed only to the side surface of the bulging portion 50. As will be described later, each urging body mounting portion 42 is not in contact with the tubular member 46. It is not attached to the outer peripheral surface of the bulging portion 50. Particularly in the present embodiment, each biasing body mounting portion 42 is located within the diameter of the bulging portion 50 and does not protrude outside the bulging portion 50. Does not exist. This is because the wheel cover body 33 is attached to the outer peripheral surface of the bulging portion 50, so that each urging body attachment portion 42 does not interfere with the wheel cover body 33.

  At least half or more of the side surfaces of the bulging portion 50 are covered with the annular portion 51 of the urging body mounting portion 42. In the bulging portion 50, bolt insertion holes 45 through which the bolts 43a are inserted are formed through both side surfaces (see FIG. 7).

  The urging body attaching portion 42 has a substantially circular annular plate-like annular portion 51 attached to the side surface of the bulging portion 50 of the wheel main body portion 41 so as to be positioned along this side surface. That is, the plate-like annular portion 51 is fixedly attached to each side surface of the bulging portion 50.

  The annular portion 51 includes two arcuate plates 52 that are spaced apart from each other and two triangular plates 53 that are spaced apart from each other. Each triangular plate 53 is formed with a bolt insertion hole 54 through which the bolt 43a is inserted so as to penetrate the front and back surfaces (see FIG. 7).

  Further, an insertion hole 55, which is a circular central hole having a diameter larger than that of the cylindrical portion 46, is formed in the central portion of the annular portion 51, and the cylindrical shape of the wheel main body 41 is formed in the insertion hole 55. Part 46 is inserted. The opening diameter dimension of the insertion hole 55 is slightly larger than the outer diameter dimension of the cylindrical portion 46, and therefore the annular portion 51 is not in contact with the outer peripheral surface of the cylindrical portion 46. That is, a slight gap 56 exists between the inner peripheral surface of the annular portion 51 and the outer peripheral surface of the cylindrical portion 46. The non-contact in this specification means substantially non-contact, and includes not only the non-contact of the main body but also, for example, the contact that has little influence on use and can be regarded as non-contact.

  Further, on the surface of the annular portion 51 (the surface opposite to the side facing the side surface of the bulging portion 50), the outer surface of the cylindrical portion 46 of the wheel main body 41 is provided on the portion close to the insertion hole 55. A cover part 58 having a C-shaped cross section covering the substantially semi-short cylindrical shape is fixedly provided so as to extend along the axial direction of the cylindrical part 46. The covering portion 58 is fixed to the surface of the annular portion 51 by welding, for example.

  The cover portion 58 is formed in an arc shape centered on the circle center of the circular insertion hole 55 and forms a pair of arc plates 59 that are spaced apart from each other, and the base ends of these arc plates 59 are integrally connected to each other. A rectangular spring mounting plate (biasing body mounting plate) 60 is formed.

  As shown in FIG. 4, the distal end portion, which is the free end portion of each arc plate 59, is located on the side opposite to the spring mounting plate 60 side from the center of the circle of the insertion hole 55 of the annular portion 51 in a side view. doing. The inner surface of each arc plate 59 is not in contact with the outer peripheral surface of the cylindrical portion 46, and a slight gap 61 is formed between the inner surface of each arc plate 59 and the outer peripheral surface of the cylindrical portion 46. Existing. Similarly, the inner surface of the spring mounting plate 60 is not in contact with the outer peripheral surface of the cylindrical portion 46, and a slight gap 62 is formed between the inner surface of the spring mounting plate 60 and the outer peripheral surface of the cylindrical portion 46. Is present. As described above, the metal urging member mounting portion 42 is not in contact with the outer peripheral surface of the cylindrical portion 46 of the resin wheel main body portion 41.

  Further, the spring mounting plate 60 of the cover portion 58 is formed with a screw hole portion 63 for attaching the biasing body so as to bulge outwardly by, for example, burring tap processing. The screw hole portion 63 includes a hole space portion 63a penetrating the inner and outer surfaces of the spring mounting plate 60, and a hole peripheral portion 63b with a screw groove positioned around the hole space portion 63a. A part of the peripheral portion 63b bulges to the outer surface side of the spring mounting plate 60. Note that a hole portion (bucker hole) 47 that is close to and opposed to the screw hole portion 63 is formed in the cylindrical portion 46 of the wheel main body portion 41 to have a slightly larger diameter than the screw hole portion 63.

  As shown in FIGS. 1 and 2, at least one of the pair of left and right wheel bodies 32, for example, a right urging body mounting portion (spring mounting portion) 42 in the left wheel body 32 is covered. The end portion of the coil spring 34 is detachably attached to the outer surface side of the spring attachment plate 60 of the portion 58 by an attachment screw 64 which is an attachment screwed to the screw hole portion 63. Note that the mounting screw 64 enters the hole 47. Since the hole 47 is a fool hole, it is not in contact with the wheel main body 41, and the tip of the mounting screw 64 is connected to the shaft body 31. It has not reached. For this purpose, it is preferable that the tip of the mounting screw 64 remains in the hole 47.

  That is, one end of the coil spring 34 is detachably attached to the spring mounting plate 60 of the covering portion 58 of the urging member mounting portion 42 on one side of the wheel body 32 with a mounting screw (for example, truss screw) 64. In addition, the other end of the coil spring 34 is detachably attached to a predetermined portion of the shaft body 31 with a fixture (for example, a bolt and a nut) 65. The coil spring 34 is disposed on the outer peripheral side of the shaft body 31 and is covered with a wheel cover body 33.

  The screw hole 63 of the biasing body mounting portion 42 on the other side of the wheel body 32 is temporarily fixed when the wheel body 32 is temporarily fixed to the shaft body 31 for painting or replacement of the opening / closing body 12. A temporary fixing screw (not shown), which is a mounting tool, is screwed (screwed). This temporary fixing screw is longer than the mounting screw 64 for attaching the coil spring 34 to the wheel body 32, and is provided with a hole portion (bucker hole) 47 of the wheel body 41 and a temporary fixing hole portion (buckle) of the shaft body 31. Hole) 31a is inserted. On the other hand, when the attachment screw 64 is screwed into the screw hole portion 63 and tightened for attachment of the coil spring 34, the tip end portion of the attachment screw 64 enters the hole portion (bucker hole) 47.

  As shown in FIG. 2, the coil spring 34 is connected to one end of the coil portion 71 and an equal-diameter coil portion 71 that is long in the axial direction of the shaft body 31 and has a relatively small outer diameter. The one end side mounting portion 72 is bent in an arc shape and the other end side mounting portion 73 is connected to the other end of the coil portion 71 and is bent in an arc shape. The screw 64 is directly attached to the urging body attaching portion 42 of the wheel body 32, and the other end side attaching portion 73 is directly attached to the shaft body 31 by the fixture 65. The inner diameter dimension of the coil portion 71 is slightly larger than the outer diameter dimension of the covering portion 58 of the biasing body mounting portion 42, and the outer diameter dimension of the coil portion 71 is the outer diameter dimension of the annular portion 51 of the biasing body mounting portion 42. A little smaller than. An end portion (at least one turn) of the coil portion 71 on the one end side attachment portion 72 side is disposed on the outer peripheral side of the cylindrical portion 46 of the wheel main body portion 41.

  Such a coil spring 34 is elastically deformed in response to the rotation of the wheel body 32 in the rewinding direction when the opening / closing body 12 is rewound (when moving in the closing movement direction). At the time of taking (when moving in the opening movement direction), the wheel body 32 returns to its original shape while being urged toward the winding direction based on the elastic restoring force. For this reason, when opening the opening 3, the weight of the opening / closing body 12 is reduced, and the opening / closing body 12 can be easily lifted manually.

  A pin 75 is attached in the vicinity of both axial ends of the shaft body 31, and a flat washer 76 is disposed between the pin 75 and the wheel body 32. The wheel body 32 is restricted from sliding along the axial direction with respect to the shaft body 31 by contact with the flat washer 76.

  As shown in FIG. 8, the bracket 27 is attached with detection means 81 that is pressed by the pressing portion 80 of the opening / closing body 12 and outputs a fully closed detection signal when the opening 3 is closed. The detection means 81 is, for example, a micro switch 83 in which the operating piece 82 is pressed by the pressing portion 80 of the opening / closing body 12 to be turned off, and at other times the operating piece 82 is separated from the pressing portion 80 and is turned on. The illuminating means (not shown) for making the accommodating space 9 in the accommodating body 2 bright is electrically connected to the microswitch 83 via the wiring 84.

  Next, the operation and the like of the opening / closing device 1 will be described.

  When closing the opening 3 of the container 2 of the vehicle, the operator holds the handle 24 and unwinds the opening / closing body 12 from the wheel cover 33 against the urging force of the coil spring 34. 3, the opening / closing body lower end portion 23 is brought into contact with the upper surface of the front end portion of the bottom plate portion 5.

  During the lowering of the opening / closing body 12, the left and right engaging portions are temporarily guided to the unlocked position against the biasing force of the spring by being guided by the inclined guide surface of the engaging receiving portion of the guide rail 11. When it moves away from the guide surface, each engaging portion returns to the locking position by the urging force of the spring and enters below the engaging receiving portion. As a result, the opening / closing body 12 is locked, The closed state (fully closed state) of the body 12 is maintained.

  In this locked state, for example, even if the open / close body 12 is forcibly lifted, the ascent of the open / close body 12 is restricted by the engagement between the engaging portion and the engagement receiving portion.

  On the other hand, when opening the opening 3 of the container 2 of the vehicle, the operator holds the handle 24 and presses the operation button 25 to move the left and right engaging portions from the locked position to the unlocked position. After that, the opening / closing body 12 is raised along the opening 3 while rotating the wheel body 32 and the wheel cover body 33 in the winding direction with respect to the shaft body 31.

  Then, as shown in FIGS. 9A to 9C, the opening / closing body 12 is compactly wound around the outer peripheral side of the wheel cover body 33 of the winding device 13. That is, after the attachment portion (attachment band) 22 on the proximal end side of the opening / closing body 12 is wound, the plurality of slats of the opening / closing body main body portion 21 are wound in order. At this time, the slat wound first (the slat at the base end) is wound around the stepped portion 33a of the wheel cover body 33. Further, since the coil spring 34 biases the wheel body 32 toward the winding direction by the elastic restoring force, the weight load of the opening / closing body 12 is reduced, and the operator can easily lift the opening / closing body 12.

  When the opening / closing body 12 is raised and the operating piece 82 of the micro switch 83 is separated from the pressing portion 80, the micro switch 83 is turned on, the lighting means is turned on, and the interior of the container 2 is brightened.

  And according to the said embodiment, the synthetic | combination which is a 1st material which is easy to slide with respect to the outer peripheral surface of the shaft 31 is a part which rotates while sliding with respect to the outer peripheral surface of the shaft 31 among the wheel bodies 32. The portion of the wheel body 32 to which at least the coil spring 34 is attached is made of a metal that is a second material that is stronger than the first material. Thus, the strength of the wheel body 32 can be improved while appropriately maintaining the slidability against the above, and accordingly, the wheel body 32 can be prevented from being damaged by the force received from the coil spring 34, and the durability can be improved.

  The wheel body 32 includes a synthetic resin wheel main body 41 and a metal urging body mounting portion 42, and the metal urging body mounting portion 42 swells the synthetic resin wheel main body 41. Because it is attached to the side surface of the protruding portion 50, for example, compared to a configuration in which the urging body attaching portion 42 is attached to the outer peripheral surface of the tubular portion 46, the synthetic resin wheel body portion 41 is less likely to be damaged, Damage to the wheel body 32 can be appropriately suppressed.

  Further, since the annular plate-like annular portion 51 of the metal urging body mounting portion 42 is fixedly attached to the side surface of the bulging portion 50, the urging body mounting portion 42 and the wheel The force acting on the main body portion 41 is dispersed, and as a result, the synthetic resin wheel main body portion 41 is hardly damaged, and the damage of the wheel body 32 can be appropriately suppressed.

  Further, since the metal biasing body mounting portion 42 has a cover portion 58 that covers the outer peripheral surface of the cylindrical portion 46 of the wheel body portion 41, the cylindrical portion 46 is protected by the cover portion 58, and as a result. The wheel body 41 made of synthetic resin is not easily damaged, and the wheel body 32 can be appropriately prevented from being damaged.

  Further, since the metal urging body mounting portion 42 is not in contact with the outer peripheral surface of the cylindrical portion 46 of the wheel main body 41, a force is applied from the urging body mounting portion 42 to the outer peripheral surface of the cylindrical portion 46. Does not act directly, and as a result, the wheel body 41 made of synthetic resin is hardly damaged, and the damage of the wheel body 32 can be appropriately suppressed.

  Also, the spring mounting plate 60 of the cover portion 58 of the metal biasing body mounting portion 42 is formed with a screw hole portion 63 for mounting the biasing body, and is formed in the cylindrical portion 46 of the wheel body 41 made of synthetic resin. Is formed with a hole 47 that is close to and opposed to the screw hole 63, for example, without damaging the cylindrical portion 46 at the tip of the mounting screw 64 that is screwed into the screw hole 63 and tightened, Damage to the wheel body 32 can be more appropriately suppressed.

  Further, the wheel body 41 made of synthetic resin rotates while sliding with respect to the outer peripheral surface of the shaft body 31 and does not use bearing parts such as a bearing, and therefore can be manufactured at low cost.

  The material (first material) of the wheel main body 41 is preferably a synthetic resin that is easily slidable with respect to the shaft body 31, but other materials may also be used. (2 materials) is preferably a metal such as iron, but other materials may be used.

  Alternatively, the synthetic resin wheel main body 41 and the metal urging member mounting portion 42 may be integrally formed by insert molding, for example.

  Further, the wheel main body 41 is not limited to one in which the bulging portion 50 is integrally provided on the outer peripheral surface of the cylindrical portion 46. For example, the bulging portion 50 and the cylindrical portion 46 are separately formed. A bulging portion 50 fixed to the outer peripheral surface of the cylindrical portion 46 may be used.

  Further, the urging body attaching part 42 may be, for example, a part in which the cover part 58 projects integrally with the annular part 51, or a part in which the coil spring 34 is attached to the annular part 51 without having the cover part 58, for example. .

  Furthermore, the urging body mounting portion 42 preferably has a non-contact configuration with respect to the outer peripheral surface of the cylindrical portion 46 of the wheel main body portion 41, but may be configured to contact.

  Further, the urging body attaching portion 42 may be constituted by only a cylindrical fitting cylinder that can be fitted to the outer peripheral surface of the cylindrical portion 46 of the wheel main body 41, for example.

  Furthermore, the configuration is not limited to the configuration in which the coil spring 34 is attached to only one of the two wheel bodies 32. For example, two coil springs 34 are provided, and the coil spring 34 is attached to each of the two wheel bodies 32. The structure etc. may be sufficient.

  Further, for example, a configuration in which the wheel body 32 directly winds the opening / closing body 12 without the wheel cover body 33 may be employed.

  Further, the number of wheel bodies 32 may be increased or decreased according to the width dimension of the opening 3, and a plurality of (two or more) wheel bodies 32 are preferably provided.

  The opening / closing device 1 is not limited to an in-vehicle shutter mounted on a vehicle, and may be provided on a structure such as a building, an aircraft, or a ship, or may be a blind device, a screen device, or the like.

3 openings
12 Opening and closing body
13 Winding device
31 shaft
32 Wheel body
34 Coil spring as a biasing body
41 Wheel body
42 Biasing attachment
43 Mounting means
46 Tube part
47 holes
50 bulge
51 Annular part
52 arc plate
53 Triangular plate
54 Bolt insertion hole which is a hole for mounting means
55 insertion hole
58 Cover
63 Screw hole

Claims (8)

A winding device for winding an opening / closing body that opens and closes an opening,
A shaft,
A wheel body rotatably arranged on the outer peripheral side of the shaft body;
An urging body for urging the wheel body,
Of the wheel body, at least a portion that rotates while sliding with respect to the outer peripheral surface of the shaft body is made of a first material that is slippery with respect to the outer peripheral surface of the shaft body,
Of the wheel body, at least the portion to which the urging body is attached is made of a second material that is stronger than the first material,
The wheel body is
A wheel main body configured by the first material and rotating while sliding with respect to the outer peripheral surface of the shaft body;
An urging body mounting portion configured of the second material and mounted on the wheel body portion;
The wheel body is
A cylindrical portion rotatably fitted on the outer peripheral side of the shaft body;
Provided on the outer peripheral surface of the cylindrical portion, and the urging body mounting portion has a bulging portion mounted on a side surface,
The biasing body mounting portion is
An annular portion attached to a side surface of the bulging portion of the wheel main body,
A cover portion that is provided in the annular portion and covers an outer peripheral surface of the cylindrical portion of the wheel body portion;
The said biasing body is attached to the said cover part of the said biasing body attaching part. The winding apparatus characterized by the above-mentioned. The winding device according to claim 1, wherein the urging body mounting portion is not in contact with the outer peripheral surface of the cylindrical portion of the wheel main body portion. The cover portion of the biasing body mounting portion is formed with a screw hole portion for mounting the biasing body,
The winding device according to claim 1 or 2, wherein the cylindrical portion of the wheel main body is formed with a hole facing the screw hole. The annular portion of the urging body mounting portion is composed of a single plate formed in an annular shape,
The single plate body is connected to the two arcuate plate portions that are spaced apart from each other via the insertion hole and the two arcuate plate portions that are spaced apart from each other via the insertion hole. two triangular shaped plate portions that are composed of a winding apparatus according to any one of claims 1 to 3, characterized in that for. The annular portion of the urging body attaching portion is attached to the side surface of the bulging portion of the wheel main body portion by means of attachment means located on opposite sides with respect to the insertion hole. The winding device according to any one of 4. The winding device according to claim 5, wherein the attachment means hole is formed outward of the insertion hole with respect to the insertion hole. The winding device according to any one of claims 1 to 6, wherein the urging body attachment portion is detachably attached to the wheel main body portion. The first material is a synthetic resin,
The winding material according to any one of claims 1 to 7, wherein the second material is a metal.

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