Chain drive device and driven member swing mechanism

Abstract

To provide a highly versatile chain drive device and door opening / closing mechanism capable of easily and freely changing the payout direction without changing the overall posture or adding other mechanisms. [Solution] The system includes a chain member 110 consisting of a pair of chains that are driven to move back and forth freely and that mesh with each other to become one unit, a chain guide mechanism that guides the chain member 110 and guides it from a first chain accommodating portion 131 to a rigid state, and a drive mechanism that drives the chain member 110 back and forth, and the chain guide mechanism has a fixed guide portion 120 that is continuous with the first chain accommodating portion 131, and a swingable guide portion 140 that is arranged to be swingable relative to the fixed guide portion 120.

Description

[Technical field]

[0001] The present invention relates to a chain drive device having a chain member that can be driven to move back and forth, a chain housing that houses the chain member, a chain guide mechanism that guides the chain member from the chain housing to a rigid state, and a drive mechanism that drives the chain member back and forth. Swing of driven member Regarding the mechanism. [Background technology]

[0002] A chain drive device that generates a pressing force is known, and has a chain member that can be driven to move back and forth, a chain accommodating section that accommodates the chain member, a chain guide mechanism that guides the chain member and leads it from the chain accommodating section to a rigid state, and a drive mechanism that drives the chain back and forth. For example, Patent Document 1 discloses a configuration in which a pair of interlocking chains (chain members) that can move forward and backward are configured to interlock with each other and become one unit as the chain moves forward, but disengage from each other and branch off as the chain moves backward; Patent Document 2 discloses a configuration in which a chain that can be bent on one side and cannot be bent on the opposite side is reeled out in a straight line. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 6673011 [Patent Document 2] JP 2020-2988 A [Patent Document 3] Patent No. 7253697 Summary of the Invention [Problem to be solved by the invention]

[0004] These known chain drive devices are capable of generating a pressing force in the payout direction by the straightened and payed-out chain member, but they require a storage section to accommodate the payed-out chain member. Therefore, when the pressing direction changes, for example when used to open and close a door member having a hinge shaft, it is necessary to change the posture of the entire chain drive device, including the storage section that accommodates the chain member, or to add another mechanism such as a link mechanism to change the payout direction, resulting in a problem of complex equipment. Furthermore, as in Patent Document 3, there is a known method in which the chain that is paid out is stiffened into a curved shape specifically for opening and closing door elements that have a hinge shaft. However, since the payout direction and the pushing direction do not match and the angle becomes larger as the payout progresses, it is necessary to extremely increase the bending rigidity when stiffening the chain. In addition, there is an issue that the payout trajectory is fixed to a certain radius of curvature, making it less versatile.

[0005] The present invention solves these problems, and provides a highly versatile chain drive device and a chain drive using the same, which can easily and freely change the payout direction without changing the overall posture or adding other mechanisms. Swing of driven member The purpose of the present invention is to provide a mechanism. [Means for solving the problem]

[0006] The present invention provides a chain drive device having a chain member that can be driven to move forward and backward, a chain storage section that stores the chain member, a chain guide mechanism that guides the chain member and guides it from the chain storage section to a rigid state, and a drive mechanism that drives the chain member forward and backward, the chain guide mechanism having a fixed guide section that is continuous with the chain storage section, and a swingable guide section that is arranged to be swingable relative to the fixed guide section. The drive mechanism has a sprocket that engages with the chain member, and the center of oscillation of the oscillating guide portion coincides with the center of rotation of the sprocket. By doing so, the above-mentioned problems are solved. In addition, the present invention provides a hinge shaft that is rotatably connected to a main body. Driven member By chain drive Swing do Swing of driven memberThe chain driving device includes a chain member that can be driven to move back and forth, a chain housing that houses the chain member, a chain guide mechanism that guides the chain member and leads it to a rigid state from the chain housing, and a drive mechanism that drives the chain member back and forth, and the chain guide mechanism includes a fixed guide portion that is continuous with the chain housing and a swingable guide portion that is arranged to be swingable with respect to the fixed guide portion, and the fixed guide portion is connected to the main body portion, and a tip end of the protruding side of the chain member is connected to the Driven member The above problem is solved by linking the Effect of the Invention

[0007] According to the invention of claim 1, the chain guide mechanism has a fixed guide portion that is continuous with the chain accommodating portion, and a swaying guide portion that is arranged to be swayable relative to the fixed guide portion, so that the payout direction can be easily changed by swaying the swaying guide portion without changing the overall posture or adding any other mechanism. Also, By making the swing center of the swing guide coincide with the rotation center of the sprocket, there is no need to swing the drive mechanism when the swing guide swings, and the payout direction can be changed more easily. Claim 2 According to the configuration described above, the chain members have a pair of chains that mesh with each other to form an integrated unit, which makes the reeled-out chain members rigid regardless of the swing direction, thereby further increasing the freedom of swing.

[0008] Claim 3 According to the invention, the center of oscillation of the oscillating guide coincides with the center of rotation of the sprocket, so that there is no need to oscillate the drive mechanism when the oscillating guide oscillates, and the payout direction can be easily changed, and the reel can be compact. Swing of driven member It is possible to configure the mechanism. [Brief description of the drawings]

[0009] [Figure 1]FIG. 2 is a perspective view of a chain drive device according to an embodiment of the present invention when vertically reeled out. [Diagram 2] A diagram of Figure 1 with some parts removed. [Diagram 3] FIG. 4 is a cross-sectional view of a chain drive device according to an embodiment of the present invention when being vertically reeled out. [Figure 4] FIG. 4 is a diagram showing the state in which the chain member in FIG. 3 has been removed. [Diagram 5] FIG. 5 is a perspective view of FIG. [Figure 6] FIG. 4 is a perspective view of the chain driving device according to the embodiment of the present invention when the payout direction is changed. [Figure 7] A diagram of Figure 6 with some parts removed. [Figure 8] 4 is a cross-sectional view of the chain driving device according to the embodiment of the present invention when the payout direction is changed. FIG. [Figure 9] FIG. 9 is a diagram showing the state in which the chain member in FIG. 8 has been removed. [Figure 10] FIG. 10 is a perspective view of FIG. [Figure 11] FIG. [Figure 12] FIG. 2 is an explanatory perspective view of a door opening and closing mechanism according to an embodiment of the present invention. [Figure 13] FIG. 13 is an enlarged explanatory view of the vicinity of the chain drive device in FIG. 12 . DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] Examples of the present invention will be described with reference to Figures 1 to 10. However, the present invention is not limited to these embodiments. EXAMPLES

[0011] As shown in Figures 1 to 10, a chain drive device 100 according to one embodiment of the present invention has a chain member 110 consisting of a pair of chains (first chain 111, second chain 112) that are driven to be able to move back and forth and that mesh with each other to become one unit, chain accommodating sections (first chain accommodating section 131, second chain accommodating section 151) that accommodate the chain members, a chain guide mechanism that guides the chain member 110 and guides it from the chain accommodating section to a rigid state, and a drive mechanism that drives the chain member 110 back and forth. The chain accommodating section has a first chain accommodating section 131 that accommodates a first chain 111, which is one of a pair of chains, and a second chain accommodating section 151 that accommodates a second chain 112, which is the other of the pair of chains. The chain guide mechanism has a fixed guide portion 120 continuous with the first chain accommodating portion 131, and a swingable guide portion 140 arranged so as to be swingable relative to the fixed guide portion 120, with the fixed guide portion 120 being integrally configured with the first chain accommodating portion 131 which accommodates the first chain 111 and in a fixed state to each other, and the swingable guide portion 140 being integrally configured with the second chain accommodating portion 151 which accommodates the second chain 112 and in a fixed state to each other.

[0012] The drive mechanism includes a drive shaft 161 and a sprocket 162 which rotates integrally with the drive shaft 161 and engages with the first chain 111 at a point where the chain member 110 is in a rigid state. In this embodiment, the center of oscillation of the oscillating guide portion 140 is configured to coincide with the center of rotation of the sprocket 162 . The center of rotation of the sprocket and the center of oscillation of the oscillating guide do not necessarily have to coincide. The first chain accommodating section 131 and the second chain accommodating section 151 are provided with a first accommodating guide groove 132 and a second accommodating guide groove 152, and when the chain member 110 is retracted, the first chain 111 and the second chain 112 are guided into the first accommodating guide groove 132 and the second accommodating guide groove 152, respectively, and are accommodated separately.

[0013] The swing guide portion 140 is provided with a swing guide groove 141 into which the first chain 111 and the second chain 112 are drawn from both directions and guided to a rigid state. Furthermore, the fixed guide portion 120 is provided with a fixed guide groove 121 that connects the first receiving guide groove 132 of the first chain receiving portion 131 and the swing guide groove 141 of the swing guide portion 140 . In this embodiment, the pins of the first chain 111 and the second chain 112 are arranged to protrude in both width directions, and are configured so that the pins of the first chain 111 and the second chain 112 engage with and are guided by the first accommodating guide groove 132, the second accommodating guide groove 152, the oscillating guide groove 141 and the fixed guide groove 121.

[0014] The chain drive device 100 of this embodiment is configured such that, when the drive shaft 161 rotates and the second chain 112 is unwound by the sprocket 162, the first chain 111 and the second chain 112 are pulled out from the first chain accommodating section 131 and the second chain accommodating section 151, guided by the oscillating guide groove 141, and unwound upward as a single unit in a rigid state. The swing guide portion 140 swings about the rotation axis of the sprocket 162 that engages with the first chain 111, thereby allowing the unwinding direction of the chain member 110 to be changed or to follow the change in the unwinding direction. In addition, the sprocket 162 is driven by a drive motor and a reducer connected to the drive shaft 161, but since the swing center of the swaying guide section 140 coincides with the rotation center of the sprocket 162, the position of the drive shaft 161 does not change, and therefore the heavy drive motor and reducer can be fixedly arranged in the same manner as the fixed guide section 120 and the first chain accommodating section 131.

[0015] The operation of the chain driving device 100 configured as above when opening and closing the driven member D having the hinge shaft H will be described. As shown in FIG. 11, the chain driving device 100 is fixed to a fixed member, and a driven member D is fixed to the tip of a chain member 110 of the chain driving device 100. The driven member D is configured to rotate around the hinge axis H, and when swung downward, the tip of the rigid portion of the chain member 110 of the chain driving device 100 in the state shown in Figures 1 to 5 is connected to the inside of the driven member D in the downward swinging state. From this state, the drive shaft 161 rotates and the second chain 112 is unwound by the sprocket 162, whereby the first chain 111 and the second chain 112 are pulled out from the first chain accommodating section 131 and the second chain accommodating section 151, guided by the oscillating guide groove 141, and unwound upward in a rigid, integrally engaged state, pushing up the driven member D.

[0016] Since the driven member D swings upward while rotating about the hinge axis H, the tip of the chain member 110 connected to the driven member D moves upward and in the direction of the hinge axis H, gradually tilting the upward pushing direction. As the swinging guide portion 140 swings about the rotation axis of the sprocket 162 that engages with the first chain 111, the payout direction also tilts in conjunction with the upward swing of the driven member D, thereby ensuring smooth operation. In addition, the sprocket 162 is driven by a drive motor and a reducer connected to the drive shaft 161. In this embodiment, the position of the drive shaft 161 does not change because the swing center of the swivel guide section 140 coincides with the rotation center of the sprocket 162, so the heavy drive motor and reducer can be fixedly positioned in the same manner as the fixed guide section 120 and the first chain accommodating section 131.

[0017] As shown on the right side of Figure 11, when the driven member D is swung significantly upward (the state of Figure 6-10), only the swaying guide portion 140 and the second chain accommodating portion 151 swing around the rotation axis of the sprocket 162, with the upward pushing direction being significantly inclined. When the driven member D swings downward, the second chain 112 is pulled in by the sprocket 162 in the opposite manner to the above, and the first chain 111 and the second chain 112 are guided by the swing guide groove 141 and move from their rigidly engaged state to a separated state, and are accommodated in the first chain accommodating section 131 and the second chain accommodating section 151.

[0018] In this embodiment, the fixed guide groove 121 and the oscillating guide groove 141 are partially overlapped and are made to have a thickness that allows them to engage with the protruding tip side of the pin of the first chain 111 and the link plate side, respectively, thereby avoiding the creation of sections that are not guided as the oscillating guide section 140 oscillates. Although the above has been described taking the swing of the driven member D as an example, the application is not limited to this, and a separate drive mechanism may be provided to actively swing the swing guide portion to change the payout direction. In addition, the lengths of the stored portions of the first chain 111 and the second chain 112 illustrated in Figures 1 to 3 and 6 to 8 are drawn as the same length for convenience of drawing, but naturally the lengths are different when stored and when extended, and the overall lengths of the first chain 111 and the second chain 112 and the size of the storage portions can be changed as appropriate depending on the stroke of the reciprocating motion.

[0019] In the above embodiment, the swaying guide portion 140 is configured so that the payout direction of the rigid state portion is inclined toward the first chain accommodating portion 131 of the first chain 111, but it may also be set so that it is inclined toward the second chain accommodating portion 151 of the second chain 112 depending on the application. In addition, in the above embodiment, the second chain accommodating portion 151 is configured to oscillate integrally with the oscillating guide portion 140, but a flexible guide member may be provided between the oscillating guide portion and the second chain accommodating portion so that only the oscillating guide portion oscillates.

[0020] In addition, in the above embodiment, the chain member 110 is configured as a pair of chains (first chain 111, second chain 112) that mesh with each other to form an integrated unit, but it is also possible to use a chain member that can be made rigid with a single chain, such as a push-pull chain or a no-back bend chain, and configure the oscillating guide portion so that the payout direction of the chain member is inclined to the opposite side of the first chain accommodating portion 131, thereby omitting the second chain accommodating portion.

[0021] According to one embodiment of the present invention The driven member swinging mechanism opens and closes the door member. It is configured as a door opening and closing mechanism, and is provided in a box 200 having a main body 210 and a door member 220, as shown in Figs. The door member 220 is rotatably connected to one surface of the main body 210 via a hinge shaft H, and is configured to be opened and closed by the chain drive device 100 described above. In this embodiment, the box 200 is a rectangular parallelepiped and has two hinge axes H and two door members 220 on the upper side, and each door member 220 has a bent portion 222 and is formed to cover the upper surface and one side surface of the main body portion 210, and is configured to obtain a large opening that is continuous upward and laterally. The chain driving device 100 is disposed at both ends of the door member 220 in the axial direction of the hinge axis H, and is disposed so as to be able to be housed in a device housing portion 212 provided at the upper end of the side wall portion 211 of the adjacent main body portion 210. With this configuration, a large opening is obtained across the entire width of the door element 220 without being obstructed by the chain drive device 100, and when the door element 220 is closed, the chain drive device 100 does not protrude to the inside or outside of the main body 210, resulting in a compact door opening and closing mechanism without any protrusions.

[0022] The tip of the chain member 110 of the chain driving device 100 is connected to a door member 220 , and the fixed guide portion 120 of the chain driving device 100 is fixed within the device housing portion 212 of the main body portion 210 . In addition, instead of providing the device accommodating section 212 in the side wall section 211, the chain driving device 100 may be provided on the inside or outside of the main body section 210 of the side wall section 211, and the fixed guide section 120 of the chain driving device 100 may be fixed to the door member 220 side, and the tip of the chain member 110 may be connected to the main body section 210 side.

[0023] In addition, in this embodiment, the door element 220 is arranged to rotate around the hinge axis H provided on the top surface of the rectangular box body 200, but the door element may be provided on the side surface, and the axial direction of the hinge axis may be oriented in any direction, including horizontal, vertical, or diagonal. Furthermore, the box is not limited to a rectangular parallelepiped and may have any shape. Furthermore, the present invention Swing of driven member The object to which the mechanism is applied may be anything, such as a building, and the object to be opened and closed does not have to be an actual "door," but may be anything, such as a "window," "shutter," etc. [Explanation of symbols]

[0024] 100 Chain drive 110 Chain member 111 ··· First Chain 112 2nd Chain 120 Fixed guide part 121 Fixed guide groove 131 First chain housing 132 First receiving guide groove 140 .... Swing guide part 141 .... Swing guide groove 151 Second chain housing 152 Second accommodation guide groove 161 Drive shaft 162 ··· Sprocket 200 ··· Storage box 210 Main body 211 Side wall 212 Device housing section 220 Door member 221 Chain connection 222 ... Refracted part D: Driven member H: Hinge axis

Claims

1. A chain drive device including a chain member that can be driven to move back and forth, a chain housing that houses the chain member, a chain guide mechanism that guides the chain member from the chain housing to a rigid state, and a drive mechanism that drives the chain member back and forth, The chain guide mechanism includes a fixed guide portion connected to the chain accommodating portion and a swingable guide portion arranged to be swingable relative to the fixed guide portion, The drive mechanism includes a sprocket that engages with the chain member. A chain drive device, characterized in that the center of oscillation of the oscillating guide portion coincides with the center of rotation of the sprocket.

2. The chain member includes a pair of chains that mesh with each other to form a unitary structure, the chain accommodating portion has a first chain accommodating portion that accommodates one of the pair of chains and a second chain accommodating portion that accommodates the other of the pair of chains, the first chain accommodating portion being disposed so as to be continuous with the fixed guide portion; 2. The chain drive device according to claim 1, wherein the second chain housing portion is disposed so as to be continuous with the swing guide portion.

3. A driven member swinging mechanism that swings a driven member rotatably connected to a main body via a hinge shaft by a chain drive device. the chain driving device includes a chain member that can be driven to move back and forth, a chain housing that houses the chain member, a chain guide mechanism that guides the chain member from the chain housing to a rigid state, and a driving mechanism that drives the chain member back and forth, The chain guide mechanism includes a fixed guide portion connected to the chain accommodating portion and a swingable guide portion arranged to be swingable relative to the fixed guide portion, A driven member oscillating mechanism, characterized in that the tip of the chain member and the fixed guide portion are connected to the driven member and the main body portion.

Images