JP7140180B2 - Movable body moving device - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a movable body moving device that moves a movable body using an engagement chain that can move back and forth.

2. Description of the Related Art Conventionally, as this type of movable body moving device, for example, a movable body moving device described in Patent Document 1 is known. This movable body moving device has two sets of meshing chains arranged side by side, each of which is composed of a pair of chain members that move back and forth along the direction of gravity while being wound around a sprocket. The chain members forming a pair in each pair of meshing chains mesh with each other as they move in the direction of advance, which is the direction of gravity, and are integrated with each other. As they move, they disengage from each other and branch out. Then, the part that has been disengaged and branched out of the meshed state meshes with and integrates with the part that has been disengaged and branched out of the meshed state of the chain members of the other set of meshed chains that are adjacent in the horizontal direction, and becomes a new meshed state. It is configured to move linearly in the anti-gravity direction.

JP 2016-64882 A

By the way, in the conventional movable body moving device, a movement space for linearly moving in the anti-gravitational direction the portion of the chain member on the retreating direction side that is disengaged from the meshed state when the meshing chain moves in the retreating direction is provided around the movable body moving device. required for airspace. Therefore, there is a problem that the available space in the surrounding air space of the movable body moving device is reduced by the space occupied by the moving space of the portion on the retreating direction side of the chain member.

Means for solving the above problems and their effects will be described below.
A movable body moving device for solving the above problems has a rotatable sprocket and at least a pair of chain members that move forward and backward based on the rotation of the sprocket. a meshing chain that meshes and integrates with each other and then disengages from each other and branches as it moves backward from the integrated meshed state; a movable body that moves in the advancing and retreating direction together with the meshing chain, wherein at least one of the paired chain members in the meshing chain has an end on the retreating direction side in the length direction of the chain member. The portion extending from the portion to the traveling direction side is wound around the sprocket and moves back and forth based on the rotation of the sprocket.

According to this configuration, at least one of the chain members in the meshing chain moves in the circumferential direction of the sprocket in a state in which the portion on the retreating direction side that is disengaged from the meshing state and branched as it moves in the retreating direction is wrapped around the sprocket. do. That is, the part on the backward direction side that is disengaged and branched out of the meshed state in the chain member does not disengage in the tangential direction from the sprocket that is wound around the lengthwise intermediate part and moves linearly around the sprocket. Move in an arc-shaped movement space along the direction. Therefore, in this case, unlike the case where a linear movement space is created in the air space around the movable body moving device, it is possible to suppress the decrease in the available space margin in the air space around the movable body moving device.

In the movable body moving device, when the chain member moves in the retreating direction, the part on the retreating direction side that is disengaged from the meshing state and branches moves in an arc-shaped movement space along the addendum circle of the sprocket. It is preferable to further provide an arc-shaped guide portion that contacts the portion of the chain member on the backward direction side from the outside in the radial direction of the sprocket.

According to this configuration, the chain member that advances and retreats with the portion on the retreating side wrapped around the sprocket is guided by the guide portion at the portion on the retreating direction that diverges out of engagement when moving in the retreating direction. to move in an arc-shaped movement space along the addendum circle of the sprocket. Therefore, when the chain member moves in the backward direction, the portion on the backward direction side in the length direction can be wound around the sprocket so as not to be disengaged.

In the movable body moving device, the guide portion is formed by an inner peripheral edge of a circular hole concentric with the addendum circle of the sprocket and in which the sprocket is rotatably arranged. is preferred.

According to this configuration, for example, by cutting out a circular hole having a slightly larger diameter than the addendum circle of the sprocket in the plate member, the arcuate guide portion can be easily formed.
In the above-mentioned movable body moving device, a position where the pair of chain members engage and integrate with each other as they move in the direction of movement to form an engaged state and a portion of the inner peripheral edge of the circular hole. It is preferable that a guide groove, which can be contacted from the side of the chain member, is provided between them so as to extend in a tangential direction of the circular hole.

According to this configuration, the portion of the chain member on the retreating direction side that is disengaged and branched out of engagement during movement in the retreating direction is guided by the guide groove, and is smoothly tangentially inserted into the circular hole that constitutes the guide portion. can be entered into.

In the above movable body moving device, the paired chain members of the meshing chain are connected to the corresponding sprockets in the longitudinal direction from the end on the retreating direction side to the advancing direction side. Each part moves forward and backward based on the rotation of the corresponding sprocket in a wound state.

According to this configuration, the two chain members forming a pair in the meshing chain are separated from the meshing state when moving in the retreating direction, and branched on the retreating direction side. Move through the moving space. Therefore, it is possible to reduce the size of the movable body moving device in the direction in which the paired chain members disengage from each other and diverge as they move in the retreating direction from the engaged state.

ADVANTAGE OF THE INVENTION According to this invention, it can suppress that the margin of the usable space in the surrounding air space of a movable body moving apparatus falls.

FIG. 2 is a partially cutaway perspective view of the movable body moving device of the embodiment, viewed obliquely from above. The front view of a storage plate. FIG. 2 is a longitudinal sectional view taken along line 3-3 in FIG. 1; FIG. 4 is a longitudinal sectional view showing a state in which the meshing chain has moved in the traveling direction from the state shown in FIG. 3; The longitudinal cross-sectional view of the movable body moving apparatus of a 1st modification. The longitudinal cross-sectional view of the movable body moving apparatus of a 2nd modification.

An embodiment of a movable body moving device will be described below with reference to the drawings.
As shown in FIG. 1, the movable body moving device 11 of this embodiment includes two sets of engaging chains 12 that can move back and forth along the length direction, and a housing that can freely move in and out of the engaging chains 12 that move back and forth. a part 13; The two sets of meshing chains 12 are arranged side by side in the housing portion 13 . The meshing chain 12 has a first chain member 14 and a second chain member 15 which are a pair of meshable chain members. In the case of this embodiment, the first chain member 14 and the second chain member 15 are arranged so that the first chain member 14 is arranged on the side closer to the meshing chain 12 of the adjacent set in the horizontal direction, and the meshing of the adjacent set in the horizontal direction is arranged. A second chain member 15 is arranged on the far side from the chain 12 .

The first chain member 14 and the second chain member 15 each have a plurality of link plates 16 that are arranged in series. It is configured to have a scale shape. In the meshing chain 12, the first chain member 14 and the second chain member 15 are connected to each other through a joint portion 18 at the link plates 16 located at the top end portions of FIG. A movable body 19 that moves back and forth together with the meshing chain 12 is attached to the joint portion 18 while supporting a functional member (not shown) such as a top plate that moves up and down and a door that opens and closes.

The meshing chain 12 meshes with each other by moving the first chain member 14 and the second chain member 15, which are paired chain members, in the direction in which the ends of the chains are positioned in the longitudinal direction. Integrate into a straight bar. On the other hand, in the meshing chain 12, the first chain member 14 and the second chain member 15 are meshed with each other and integrated into a straight rod shape. branch off. In the engagement chain 12, when the first chain member 14 and the second chain member 15 move in the backward direction, a portion of a predetermined length extending from the proximal end to the distal end in the longitudinal direction is inserted into the accommodation portion 13. be accommodated. On the other hand, when the first chain member 14 and the second chain member 15 move in the advancing direction, the meshing chain 12 has a predetermined length extending from the tip end to the base end side in the longitudinal direction. exposed to.

In the following description, Z is the forward/backward movement direction of the meshing chain 12 when the movable body 19 attached to the joint portion 18 is moved. In this case, the advancing direction of the meshing chain 12, which is the upward direction in FIG. 1, is Z1, and the retreating direction of the meshing chain 12, which is the downward direction in FIG. 1, is Z2. In addition, in the direction perpendicular to the forward/backward movement direction Z, which is also the length direction of the meshing chain 12, movement in the backward direction Z2 from the meshing state in which the first chain member 14 and the second chain member 15 are meshed with each other and integrated. A branching direction X is defined as a direction in which they are mutually disengaged and branched. The branch direction X in this case is also the direction in which the two mesh chains 12 are arranged side by side. Further, the direction perpendicular to both the advancing/retreating movement direction Z and the branching direction X is defined as the depth direction Y, which is also the width direction of the meshing chain 12 .

As shown in FIG. 1 , the housing portion 13 includes a front plate 20 and a rear plate 21 having substantially the same rectangular shape facing each other at a predetermined distance in the depth direction Y. As shown in FIG. The front plate 20 and the rear plate 21 are connected by a plurality of connecting bodies 22 along the depth direction Y, and the meshing chains 12 are arranged side by side in the space area between the front plate 20 and the rear plate 21 . A top plate 23 having a rectangular shape in a plan view is installed between the upper edge of the front plate 20 and the upper edge of the rear plate 21 at a position between the two mesh chains 12 in the horizontal direction. Further, in the spatial region between the front plate 20 and the rear plate 21, two plate members 24 are arranged in the forward and backward movement direction Z with a distance in the depth direction Y smaller than the size of the meshing chain 12 in the width direction. are arranged along. These two plate members 24 are supported between the front plate 20 and the rear plate 21 by a plurality of support rods 25 along the depth direction Y. As shown in FIG.

As shown in FIGS. 1 and 2, the plate member 24 has longitudinal and lateral lengths the same as the longitudinal and lateral lengths of the front plate 20 and the rear plate 21, and has four corners. is cut out in a triangular or quadrangular shape to allow passage of the connector 22 . As shown in FIG. 2, the plate member 24 has a symmetrical shape when viewed from the front, and a pair of left and right circular holes 26 are cut out in the central portion of the plate member 24 . A driving shaft 27 is inserted in the depth direction Y into the circular hole 26 on the right side in FIG. 2, and a driven shaft 28 is inserted in the depth direction Y in the circular hole 26 on the left side in FIG.

In the plate member 24, a sprocket 29 that rotates while meshing with the first chain member 14 of the meshing chain 12 on the right side in FIG. ing. On the other hand, a sprocket 30 that rotates while meshing with the first chain member 14 of the meshing chain 12 on the left side in FIG. 1 is arranged in the circular hole 26 on the left side in FIG. Each of the sprockets 29 and 30 has substantially the same axial thickness as the plate member 24 . The circular hole 26 has a circular shape concentric with the addendum circles of the sprocket 29 and the sprocket 30. From a part of the inner peripheral edge of the circular hole 26, a guide extending linearly in the traveling direction Z1 upward in FIG. A groove 31 is formed up to the upper edge of the plate member 24 . In this case, the guide groove 31 is formed by cutting from the upper edge of the plate member 24 so as to extend in the tangential direction of the circular hole 26 .

In the plate member 24, in the area further to the right of the circular hole 26 on the right side in FIG. A groove-shaped guide groove 32 is formed by cutting from the upper edge of the plate member 24 with the tip side of . On the other hand, in the area of the plate member 24 further to the left of the circular hole 26 on the left side in FIG. A groove-shaped guide groove 32 is formed by cutting from the upper edge of the plate member 24 with the portion on the leading end side.

A notch portion 34 is formed at the upper end edge of the plate member 24 so as to allow the chain guide 33 shown in FIG. ing. Support holes 35 through which the support rods 25 shown in FIG. Penetration is formed.

As shown in FIG. 1, the drive shaft 27 and the driven shaft 28 are supported by the front plate 20 and the rear plate 21 of the housing portion 13 via bearings 36, respectively. A drive gear 38 is attached via a key groove structure 37 to the front end portion of the drive shaft 27 protruding forward from the front plate 20 so as to rotate integrally with the drive shaft 27 . On the other hand, a driven gear 39 is attached to the tip of the driven shaft 28 protruding forward from the front plate 20 via a key groove structure 37 so as to rotate integrally with the driven shaft 28 . The drive gear 38 and the driven gear 39 are meshed so as to rotate in opposite directions, and the drive gear 38 is meshed with a transmission gear (not shown) for transmitting the driving force of a drive source (not shown) such as a motor to the drive gear 38. ing.

Therefore, in the case of this embodiment, when the drive gear 38 and the drive shaft 27 rotate counterclockwise in FIGS. The sprocket 29 also rotates counterclockwise. On the contrary, the driven gear 39 and the driven shaft 28 rotate clockwise in FIGS. also rotate clockwise. Therefore, in the meshing chain 12 arranged side by side, the paired first chain member 14 and the second chain member 15 move in the advancing direction Z1, and mesh with each other to form a straight rod-like integrated body. A predetermined length portion on the traveling direction Z1 side that continues to the side is exposed to the outside of the accommodating portion 13 .

On the other hand, when the driving gear 38 and the driving shaft 27 are rotated clockwise in FIGS. 1 and 2 by a driving force from a driving source (not shown), the sprocket 29 rotatably attached to the driving shaft 27 is also rotated clockwise. rotate to On the contrary, the driven gear 39 and the driven shaft 28 rotate counterclockwise in FIGS. 30 also rotates in the counterclockwise direction. Therefore, in the side-by-side meshing chain 12, the paired first chain member 14 and the second chain member 15 move in the retreating direction Z2, disengage each other from the meshing state, and branch from the proximal end to the distal end. A predetermined length portion on the retreating direction Z2 side that is continuous with is housed in the housing portion 13 .

Next, the operation of this embodiment will be described.
As shown in FIGS. 3 and 4, in the movable body moving device 11, the drive shaft 27 and sprocket 29 and the driven shaft 28 and sprocket 30 rotate in mutually opposite directions, so that the engagement chain 12 moves backward as shown in FIG. position and the advanced position shown in FIG. In this case, the second chain member 15 of the first chain member 14 and the second chain member 15 that form a pair in the meshing chain 12 has a predetermined length portion on the backward direction Z2 side in the length direction, with the distal end side facing sideways. It advances and retreats along the guide groove 32, which has an inverted J shape or a sideways J shape.

On the other hand, of the first chain member 14 and the second chain member 15 that form a pair in the meshing chain 12, the first chain member 14 has a portion that extends from the end on the backward direction Z2 side in the longitudinal direction to the advancing direction Z1 side. , while being wrapped around the sprockets 29 and 30, move in the circumferential direction thereof. For example, when the meshing chain 12 moves in the retreating direction Z2 from the advancing position of FIG. 4, the portion of the first chain member 14 on the retreating direction Z2 side is formed so as to be able to contact the connecting pin 17 of that portion from the side. It enters into the circular hole 26 while being guided by the guide groove 31 that has been formed. Thereafter, the portion of the first chain member 14 on the retreating direction Z2 side is guided to the inner peripheral edge of the circular hole 26 that can contact the connecting pin 17 of that portion from the outside in the radial direction of the sprockets 29, 30. It moves in an arc-shaped movement space along 30 tip circles. In this regard, the inner peripheral edge of the circular hole 26 corresponds to an arcuate guide portion that contacts the portion of the first chain member 14 on the backward direction Z2 side of the sprockets 29 and 30 from the radially outer side.

Here, as shown by a two-dot chain line in FIG. 3, when the ends of the first chain member 14 of the two sets of meshing chains 12 on the backward direction Z2 side are connected to each other via the joint portion 18, There are the following problems. That is, in this case, since the portion on the backward direction Z2 side including the joint portion 18 passes through the top plate 23, it is necessary to eliminate the top plate 23 or form a passage hole in the top plate 23. be. Of the air space around the movable body moving device 11, a part of the air space on the advancing direction Z1 side is occupied as a moving space for the portion on the retreating direction Z2 side of the first chain member 14. As shown in FIG. On the other hand, in the case of this embodiment, as shown in FIG. move to Therefore, the movement space of the portion on the backward direction Z2 side of the first chain member 14 does not occupy part of the air space around the movable body moving device 11 .

Also, when the meshing chain 12 moves from the retracted position in FIG. It is guided and moves arcuately in the direction opposite to when moving in the backward direction Z2. After that, the portion of the first chain member 14 on the retreating direction Z2 side is guided to move from the inside of the circular hole 26 to the guide groove 31 while at least the ends of that portion remain engaged with the sprockets 29 and 30. be done. Then, as shown in FIG. 4, it meshes with the second chain member 15, which is guided by the guide groove 32 and moves in the traveling direction Z1, and is in a meshed state in which it is integrated into a straight rod shape.

Here, as shown by the two-dot chain line in FIG. 4, when the ends of the first chain member 14 of the two sets of meshing chains 12 on the backward direction Z2 side are connected to each other via the joint portion 18, There are the following problems. That is, since the joint portion 18 of the first chain members 14 of both meshing chains 12 does not mesh with the sprockets 29 and 30, in order to advance the movable body 19 to the height position shown in FIG. More link plates 16 are required as indicated by the dashed line. On the other hand, in the case of the present embodiment, as shown in FIG. 4, the ends of the first chain members 14 of the two mesh chains 12 on the retreating direction Z2 side are not connected. Therefore, the first chain member 14, with its end on the retreating direction Z2 side individually meshed with the sprockets 29, 30, has a large portion of the length direction composed of the minimum number of link plates 16 that is the second chain member. By meshing with the chain member 15, it can be in a meshed state in which it is integrated in a straight rod shape.

Next, the effects of this embodiment will be described.
(1) One of the first chain members 14 in the meshing chain 12 is disengaged from the meshing state as it moves in the backward direction Z2, and the part on the backward direction Z2 side that is branched is wound around the sprockets 29 and 30. 29, 30 move in the circumferential direction. That is, the portion on the retreating direction Z2 side that is disengaged and branched out of the meshed state in the first chain member 14 does not disengage in the tangential direction from the sprocket around which the intermediate portion in the length direction is wound and moves linearly. It moves in an arc-shaped movement space along the circumferential direction of the sprocket. Therefore, in this case, unlike the case where a linear movement space is created in the airspace around the movable body moving device 11, it is possible to suppress the reduction in the available space in the airspace around the movable body moving device 11.

(2) The first chain member 14, which advances and retreats with the portion on the retreating direction Z2 side wrapped around the sprockets 29 and 30, is the portion on the retreating direction Z2 side that is disengaged from the meshed state and branched when moving in the retreating direction Z2. is guided to a guide portion that can come into contact with the portion in question from the outside in the radial direction. Then, it moves in an arc-shaped movement space along the addendum circle of the sprockets 29 and 30 . Therefore, when the first chain member 14 moves in the retreating direction Z2, the portion on the retreating direction Z2 side in the length direction can be wound around the sprockets 29, 30 so as not to be disengaged.

(3) A circular guide portion can be easily formed by cutting out a circular hole 26 having a slightly larger diameter than the addendum circle of the sprockets 29 and 30 in the plate member 24 .
(4) A circular hole in which a guide groove 31 guides a portion of the first chain member 14 on the retreating direction Z2 side that is disengaged and branched when moving in the retreating direction Z2, and whose inner peripheral edge constitutes a guide portion. 26 can be smoothly advanced tangentially.

It should be noted that the above-described embodiment may be modified as in modification examples shown below. Moreover, the configuration included in the embodiment and the configuration included in the modified example below may be arbitrarily combined, and the configurations included in the modified example below may be arbitrarily combined.

As shown in FIG. 5, in the movable body moving device 11, each of the first chain member 14 and the second chain member 15 forming a pair in the meshing chain 12 moves in the backward direction Z2 when moving in the backward direction Z2. may be moved in the circumferential direction of the sprockets 29 and 30. That is, the first chain member 14 and the second chain member 15 are wound around the corresponding sprockets 29 and 30 in the longitudinal direction at the portions extending from the end on the retreating direction Z2 side to the advancing direction Z1 side. The forward/backward movement may be performed based on the rotation of the sprockets 29 and 30 .

According to this configuration, the two chain members 14 and 15 forming a pair in the meshing chain 12 are disengaged from the meshing state when moving in the backward direction Z2, and the portions on the backward direction Z2 side branched out from the sprockets 29 and 30, respectively. Moves in an arc-shaped movement space along the tip circle. Therefore, the size in the branch direction X can be made smaller than that of the accommodation portion 13 in the case of the above-described embodiment indicated by the two-dot chain line in FIG. Therefore, the movable body moving device 11 can be made compact in the branching direction X in which the paired chain members 14 and 15 are disengaged from each other as they move in the backward direction Z2 from the engaged state. In the case shown in FIG. 5, the drive shaft 27 and the driven shaft 28 to which the sprockets 29 and 30 are attached so as to be rotatable together, one of the four shafts is the drive shaft 27 to which the drive gear 38 is attached, and the other three It may be the driven shaft 28 with the driven gear 39 mounted thereon.

- As shown in FIG. 6, the movable body moving device 11 may be configured to include only one set of the meshing chain 12 in which the first chain member 14 and the second chain member 15 form a pair. In this case, when both the first chain member 14 and the second chain member 15 move in the retreating direction Z2, the portions on the retreating direction Z2 side that are disengaged from the meshing state and diverge are attached to the corresponding sprockets 29 and 30. A configuration in which an arcuate movement space along the addendum circle is moved may be used. According to this configuration, the movable body moving device 11 can be made more compact in the branching direction X in which the paired chain members 14 and 15 are disengaged from each other as they move in the retreating direction Z2 from the engaged state. can be planned.

- The movable body moving device 11 may have a configuration in which the top plate 23 is not provided in the central upper portion of the housing portion 13 .
In the movable body moving device 11, the drive shaft 27 having the drive gear 38 attached to the tip and the driven shaft 28 having the driven gear 39 attached to the tip are arranged more spaced apart in the branch direction X than in the case of the embodiment. , the driven gear 39 may be independently supplied with the driving force from the driving source.

・In the movable body moving device 11, the forward and backward moving direction Z of the part where the parts of the first chain member 14 and the second chain member 15 on the traveling direction Z1 side are meshed and integrated into a straight rod shape is limited to the direction along the gravity. However, the direction may be horizontal or oblique.

A circular hole 26 cut out from the plate member 24 serves as a guide portion for moving the portion of the first chain member 14 on the side of the retreating direction Z2 in the circumferential direction of the sprockets 29 and 30 when the meshing chain 12 moves in the retreating direction Z2. It may be configured at other than the inner peripheral edge of the. For example, a guide plate in which an arcuate guide groove for sliding the ends of the connecting pins 17 that connect the link plates 16 of the first chain member 14 in an arcuate shape is cut so as to overlap the plate member 24 in the depth direction Y. can be placed in

- The movable body moving device 11 may be provided with two or more sets of the meshing chain 12 in which the first chain member 14 and the second chain member 15 form a pair, for example, three sets or four sets. Also, the plurality of sets of meshing chains 12 may not necessarily be arranged side by side.

DESCRIPTION OF SYMBOLS 11... Movable body moving apparatus 12... Engagement chain 14... 1st chain member 15... 2nd chain member 19... Movable body 26... Circular hole whose inner peripheral edge constitutes a guide part 29, 30... Sprocket 31... Guide groove

Claims (5)

a rotatable sprocket;
It has at least a pair of chain members that move forward and backward based on the rotation of the sprocket, and the pair of chain members engages and integrates with each other as they move in the advancing direction, and then retreats from the integrated meshed state. a meshing chain that disengages from each other and branches as it moves in the direction;
a movable body that is connected to an end portion of the meshing chain on the traveling direction side and moves in the advancing and retreating movement direction together with the meshing chain;
with
At least one of the chain members forming a pair in the meshing chain is in a state in which a portion extending from the end on the backward direction side to the forward direction side in the length direction of the chain member is wound around the sprocket. A movable body moving device characterized in that it moves forward and backward based on the rotation of the sprocket. When the chain member moves in the retreating direction, the part on the retreating direction side that is disengaged from the meshed state and branches moves in an arc-shaped movement space along the addendum circle of the sprocket. 2. The movable body moving device according to claim 1, further comprising an arcuate guide portion that contacts the portion on the backward direction side of the sprocket from the outside in the radial direction of the sprocket. 2. The guide portion is formed by an inner peripheral edge of a circular hole concentric with the addendum circle of the sprocket and in which the sprocket is rotatably arranged. The movable body moving device according to 1. Between a position where the paired chain members are engaged with each other and integrated as they move in the advancing direction and a part of the inner peripheral edge of the circular hole, the chain member 4. The movable body moving device according to claim 3, wherein a guide groove that can be contacted from the side is provided so as to extend in a tangential direction of the circular hole. Each of the paired chain members in the meshing chain is wound around the corresponding sprocket in the longitudinal direction of each of the sprockets, in a state where the portion extending from the end on the backward direction side to the forward direction side is wound. 5. The movable body moving device according to any one of claims 1 to 4, wherein the movable body moving device moves forward and backward based on the rotation of the corresponding sprocket.

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