JP2649260B2 - Truck drive mechanism - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bogie driving mechanism for moving a bogie as required on an assembly line of a copying machine or the like.

<Prior Art and its Defects> For example, in a copier assembly line, a plurality of work carts are moved from an assembly start area to a product unloading area through a plurality of assembly areas and adjustment areas along an endless movement path. .
In the assembly start area, a frame body of the copying machine (a frame body on which various components are not mounted) is placed on a carriage. Various parts are mounted on the frame body while the carriage is moved through each mounting area, and various parts are mounted on the frame body while the carriage is moved through each adjustment area. Various adjustments are performed. When the cart is moved to the product carrying-out area in this way, substantially all the components are assembled to the frame body on the cart, and the adjustment for the various components assembled is completed.
In the product unloading area, the copier as an assembled product is unloaded from the cart and packed in a packaging box as required.

In the assembly line as described above, when the working time in the assembly area and the adjustment area is relatively long, the carriage is intermittently moved instead of moving the carriage continuously.

However, the conventional drive mechanism for intermittently moving the carriage is not sufficiently satisfactory, and has problems to be solved such as complicated structure, high cost, and difficulty in operation.

<Object of the Invention> The present invention has been made based on the above-mentioned facts, and has as its main objects to provide a simple structure, can be manufactured at low cost, and to easily and smoothly perform intermittent movement of a bogie. To provide a driving mechanism for a truck.

<Summary of the Invention> According to the present invention, a connecting member releasably connected to an engaging member fixed to a drive transmitting member that is provided on a bogie main body and that is moved in a predetermined direction corresponds to a working area. And a driving release means arranged in the vehicle, wherein the connecting member is provided on a revolving body mounted on the carriage,
The revolving structure is configured such that the connection member is located on the movement path of the engagement member so that the connection member is driven and connected to the drive transmission member, and the connection member is moved from the movement path of the engagement member. By moving upward, the connecting member can be pivoted between a release position where the driving connection to the drive transmitting member is released, and a roller for releasing driving is provided on the revolving body. Has a release plate extending in the direction of movement of the truck, the release plate having an inclined guide portion extending upwardly inclined in the direction of movement of the truck, and a horizontal action portion extending substantially horizontally following the inclined guide portion. And a blocking portion extending substantially vertically upward at one end of the horizontal action portion, and
The roller is movable between a rising position protruding into the moving path of the roller and a descending position retreating from the moving path of the roller. When the release plate is at the raised position, the roller is moved at least to the inclined guide portion and the release guide. By moving the revolving structure from the connection position to the release position by moving the revolving structure along the horizontal action portion, when the release plate is moved to the lowered position, the release plate is separated downward from the rollers and A bogie drive mechanism is provided, wherein the revolving body is swung from the release position to the connection position.

In the above-described bogie drive mechanism according to the present invention, when the bogie is moved to the work area, the release plate disposed corresponding to the work area and set at the raised position is provided with a roller for releasing the drive of the revolving body. Is moved along at least the inclined guide portion and the horizontal action portion, thereby turning the revolving structure from the connection position to the release position. As a result, the connecting member provided on the revolving structure is separated upward from the movement path of the engagement member of the drive transmission member, the drive connection of the connection member to the drive transmission member is released, and the bogie is securely stopped in the work area. Is done. As described above, since the roller for releasing the drive of the revolving body moves along the inclined guide portion and the horizontal action portion of the release plate, the drive connection of the connection member to the drive transmission member is released, and the bogie stops. The operation is performed easily and very smoothly. Further, generation of noise is prevented, and durability is improved. The blocking portion of the release plate reliably prevents the roller from overrunning, so that the carriage is reliably prevented from moving beyond the work area.

In order to move the carriage stopped in the work area, the release plate may be moved from the raised position to the lowered position. When the release plate is moved to the lowered position, the release plate is separated downward from the roller and pivots the rotating body from the release position to the connection position. As a result, the engaging member of the drive transmitting member is engaged with the connecting member of the rotating body, and the connecting member is drivingly connected to the engaging member, so that the bogie is moved by the driving transmitting member. As described above, by moving the release plate so as to be spaced downward from the roller, the connection member is driven and connected to the drive transmission member.
The movement of the trolley is easily performed.

Therefore, the drive mechanism of the truck according to the present invention can easily and smoothly perform the intermittent movement of the truck. In addition, the structure is simple as a whole and can be manufactured at low cost.

<Specific Example> Hereinafter, a detailed description will be given with reference to the accompanying drawings.

In FIG. 1 showing a part of an assembly line to which a specific example of a drive mechanism according to the present invention is applied, a carriage 2 used for assembling a copying machine or the like is provided with a guide means 4 provided along the assembly line. Move while being guided. The trolley 2 includes a rectangular trolley main body 6, and an elevating platform (not shown) is mounted on the bogie main body 6 via a lift mechanism (not shown) so as to be vertically movable. A work table 8 having a shape is rotatably mounted. A caster 12 having a rotatable roller 10 is mounted on the four corners at the bottom of the carriage body 6. These four casters 12 are composed of freely rotatable casters that are rotatable about an axis extending in the vertical direction (a direction perpendicular to the paper surface in FIG. 1). Further, an operation unit 14 is mounted on a lift (not shown), and the operation unit 14 is provided with an operation panel 16 on which various operation switches are arranged. This trolley 2
Is one of the applicant (Mita Industries Co., Ltd.)
It is substantially the same as that disclosed in the specification and drawings of the patent application (name: work cart) filed on May 20, and therefore, reference is made to the above specification and drawings for details.

Further, the guide means 4 has a base plate 18 fixed to the floor of a factory or the like and a pair of guide members 20 and 22 fixed to the upper surface of the base plate 18. Referring also to FIG. 6, in an embodiment, the guide members 20 and 22 include chain guide portions 20a and 22a extending substantially vertically upward from the upper surface of the base plate 18.
And roller guide portions 20b and 22b provided at the upper end portions of the chain guide portions 20a and 22a, and a guide groove having an open upper surface is defined therebetween.

A drive chain 24 (constituting a drive transmission member) in a drive mechanism for moving the carriage 2 is disposed between the pair of guide members 20 and 22. Referring to FIGS. 2 and 3 together with FIG. 6, the illustrated drive chain 24 is endless, and a pair of inner link plates 26 and a pair of outer link plates 28 are alternately arranged. A pair of inner link plates 26 and a pair of outer link plates 28 adjacent to each other are pivotally connected via pins 30. A pin 30 is fitted between the pair of inner link plates 26 to Is rotatably mounted. Further, a plurality of specific pairs of outer link plates 28 (for example, outer link plates at intervals of five) are provided with an engagement claw 34 as an engagement member and a support roller 42. That is, an engaging claw 34 projecting upward is fixed to one of the upper sides of the pair of outer link plates 28 by means such as welding. The drive chain 24 is moved by a drive source such as an electric motor in a direction indicated by an arrow 36 (FIGS. 1 and 2). Recess
34a are formed (FIG. 3). The concave portion 34a corresponds to the peripheral shape of the connecting pin described later, and acts so as to engage with the connecting pin and push in the direction indicated by the arrow 36. Also,
A mounting block 38 protruding downward is fixed to the other located below the pair of outer link plates 28 by means such as welding, and a supporting roller 42 is rotatable on the mounting block 38 via a pin 40. It is attached to. In the drive chain 24, as shown in FIG. 6, when the drive chain 24 moves between the guide members 20 and 22, the roller 32 moves while being guided by the inner surfaces of the chain guide portions 20a and 22a. 42 moves in contact with the upper surface of the base plate 18.

The carriage 2 and the drive chain 24 are drivingly connected as follows. Referring to FIGS. 4 to 6, in a specific example, the cart 2
At the front end (right end in FIG. 1) of the bogie main body 4, a revolving body indicated by reference numeral 44 is provided. The revolving superstructure 44 includes a pair of main body plates 46 and 48 arranged at intervals in the vertical direction, and an arm 50 arranged between the pair of main body plates 46 and 48. A block (not shown) is fixed between one end of the pair of body plates 46 and 48.
On the other hand, a mounting bracket 52 is fixed to the left front end (the upper right end in FIGS. 1 and 4) of the bogie main body 4, and is attached to the mounting bracket 52 in the width direction (the vertical direction in FIGS. 1 and 4; A pair of bracket pieces 54 are provided at intervals in a direction perpendicular to the paper surface in FIG. 5 and in a left-right direction in FIG. 6, and between the bracket pieces 54 via a shaft member 56 between the main body plates 46 and 48. The provided block piece (not shown) is pivotally mounted. The arm 50 is rotatably connected to a longitudinally intermediate portion of the pair of main body plates 46 and 48 via a pin 58 extending vertically. This arm 50 is, as clearly shown in FIG.
Horizontal base 60a, horizontal base 60a extending substantially horizontally from 46 and 48
A vertical intermediate portion 60b extending substantially vertically upward from one end of the vertical intermediate portion 60b and a horizontal distal end portion 60c extending substantially horizontally from the upper end of the vertical intermediate portion 60b. The horizontal distal end portion 60c is covered by a bolt 62 and a nut 64. A guide roller 66 and a connecting pin 68 (constituting a connecting member) are mounted. The guided roller 66 is rotatably mounted on the lower surface of the horizontal tip 60c via a spacer 70, and the connecting pin 68 is disposed below the guided roller 66,
It protrudes downward. The guided rollers 66 are provided corresponding to the roller guide portions 20b and 22b of the guide means 4, and move while being guided by the inner surfaces of the roller guide portions 20b and 22b. The connecting pin 68 is provided with a plurality of engaging claws provided on the drive chain 24.
34, and can be driven and connected to the drive chain 24 by releasably engaging with any of the engaging claws 34.

On the front side and the rear side of the arm 50, buffer means 72 and 74 are provided. In a specific example, a rectangular projecting piece 76 is integrally provided at an intermediate portion of the arm 50, and one buffer means 72 is disposed in front of the projecting piece 76, and the other buffer means 74 is provided on the rear side. Are arranged. The buffer means 72 is constituted by a cylinder type shock absorber known per se, and is mounted on a mounting plate 78 mounted between the other end portions of the pair of main body plates 46 and 48. This shock absorbing means 72 acts on the above-mentioned projecting piece 76 when the impact in the direction shown by the arrow 80 (FIG. 4) acts on the arm 50 at the time of starting the carriage 2 or the like, thereby damping the impact. Further, the other buffering means 74 is formed of a rubber member which can be formed, for example, of synthetic rubber, and is attached to an attaching member 82 attached to the upper surface of one end of the main body plate 46. Such buffer means 74 is indicated by an arrow 84 (FIG. 4).
When the impact in the direction shown by the arrow acts on the arm 50, it acts on the protruding piece 76 to buffer the impact. A hanging piece 86 hanging downward is fixed to a vertical intermediate portion 60b of the arm 50, and a roller 90 for canceling driving is rotatably attached to a lower end of the hanging piece 86 via a short axis 88.

The revolving structure 44 described above is moved in the width direction (that is,
Shaft member 56 extending in a direction substantially perpendicular to the guide groove of
1, 4 and 6 (the position shown by the solid line in FIG. 5) and the release position shown by the two-dot chain line in FIG. In the connection position, the connection pin provided on the arm 50 of the revolving unit 44
The reference numeral 68 is located in the guide groove of the guide means 4 and protrudes into the movement path of the engagement claw 34 of the drive chain 24. The movement of the drive chain 24 causes the engagement claw 34 and the connecting pin 68 to be releasably engaged.
In this connection position, the guided roller 66 is positioned between the roller guide portions 20b and 22b in the guide means 4. On the other hand, when the rotating body 44 is moved to the release position, the guided rollers 66 and the connecting pins 68 move upward, and the guided rollers 66 move.
Is disengaged from the guide groove of the guide means 4 and the connecting pin 68 retreats from the movement path of the engaging claw 34 of the drive chain 24, and the engagement between the connecting pin 68 and the engaging claw 34 is released. At this time, the connecting pin 68 is located between the roller guide portions 20b and 22b without completely disengaging from the guide groove of the guide means 4, and the carriage 2 does not move off the assembly line. In the specific example, the revolving super structure 44
Can be further pivoted above the release position to an upper position shown by an arrow 92 (FIG. 5) to a release position (not shown). In such a disengaged position, both the guided roller 66 and the connecting pin 68 provided on the revolving unit 44 are disengaged from the guide groove of the guide means 4. When the revolving unit 44 is configured to pivot to the detached position, it is preferable that the revolving unit 44 is provided with a lock means for releasably locking the revolved unit 44 at the detached position.

In the specific example, a connection position holding means 94 for holding the revolving unit 44 at the connection position is provided. Referring mainly to FIG. 5, the illustrated connection position holding means 94 includes a first holding means 96 provided outside and a second holding means 98 provided inside. A support plate 100 is mounted on the front end of the bogie main body 6, and a mounting block piece 102 is fixed to the support plate 100. A first holding means 96 and a second holding means 98 are mounted on the mounting block piece 102. Have been. The first holding means 96, which mainly acts for buffering, has a screw shaft 104 screwed to the mounting block piece 102 in a height-adjustable manner.
Is screwed, and the tip of the screw shaft 104 is
A coil spring 108 is interposed between 06 and the main body plate 48 of the revolving unit 44. Therefore, by changing the position of the locking nut 106, the biasing force of the coil spring 108 acting on the rotating body 44 can be adjusted. Note that the nut 110 is for fixing. Further, the second holding means 98 mainly acting as a positioning has a screw shaft 112 screwed to the mounting block piece 102 so as to be adjustable in height, and the tip of the screw shaft 112 is formed of, for example, synthetic rubber. Rubber member 11 that can be made
4 are provided. Note that the nut 116 is also for fixing. The first holding means 96 (especially the coil spring 108) and the second holding means 98 (especially the rubber member 114) act on the lower surface of the revolving body 44 to retain the revolving body 44 at the connection position. Further, as will be easily understood, when the revolving body 44 pivots downward toward the connecting position and abuts on the first holding means 96 and the second holding means 98, the impact due to such abutment is reduced by the coil spring. Buffered by 108 and rubber member 114.

In a specific example, a guided unit 118 is also provided at the rear end of the bogie main body 6 so that the bogie 2 is reliably moved along the guide groove of the guiding unit 4. Referring to FIG. 7 together with FIG. 1, the illustrated guided means 118 includes a first member 120 attached to the rear end of the bogie main body 6 and a pin 122 connected to a distal end of the first member 120. And a second member 124 mounted to be pivotable about an axis extending in the front-rear direction. A plate 126 is fixed to the lower surface of the distal end of the first member 120, and the plate 126 extends to the base of the second member 124.
A substantially triangular contact piece 128 is fixed to the upper surface of the base of the second member 124. Further, the distal end of the second member 124 is provided with a spacer 134 by a bolt 130 and a nut 132.
The guided roller 136 is rotatably mounted via the.
With this configuration, when the second member 124 is turned clockwise as indicated by arrow 138 to the operating position indicated by the solid line in FIG. 7, its base comes into contact with the upper surface of the plate piece 126, and thus the second The member 124 is held in the working position. In such an operative position, the second member 124 is the first member 1
The guide roller 136 extends substantially horizontally following the roller 20, and the guided roller 136 provided at the end thereof is located between the roller guide portions 20b and 22b of the guide means 4 (at this time, the guided roller 136 is Is located above the engagement claw 34 provided on the
34 does not engage). On the other hand, when the second member 124 is turned in the counterclockwise direction shown by the arrow 140 to the detached position shown by the two-dot chain line in FIG. 7, the contact piece 128 comes into contact with the upper surface of the first member 120, and The second member 124 is held at the detached position. In such a disengaged position, the second member
Reference numeral 124 extends inclining inward, and the guided roller 136 provided at the tip thereof is separated from the guide groove of the guide means 4. still,
Since the guided means 118 is disposed at the rear end of the bogie main body 6 (particularly at the rear end on the side opposite to the lower side in FIG. 1 where the worker is located), the worker Is directly second
It is not easy to turn the member 124 to be positioned in the working position or the detached position. Therefore, it is desirable to move the second member 124 to the above-mentioned operation position or the above-mentioned separation position by using a bar-shaped tool having a bent front end portion, that is, a dedicated tool for line-out.

Referring to FIG. 1 again, the above-mentioned assembly line is provided with a power supply mechanism for supplying a current to the carriage 2 moving along the guide means 4. The illustrated power supply mechanism includes a power supply unit 142 provided along the guide unit 4 and a power collection unit 144 provided on the bogie main body 6. Power supply means 142
Has a power supply rail 146, and the power supply rail 146 is covered by a cover member 148 on the other surface except the surface facing the carriage 2. The current collecting means 144 is attached to the first arm 150 mounted on the bogie main body 6 and the front end of the first arm 150 so as to be pivotable in the front-rear direction around an axis extending in the vertical direction via a pin. A current collecting terminal 156 is attached to a distal end of the second arm 152 via a current collecting arm 154. When the second arm 152 is in the operating position shown in FIG.
When the second arm 152 is pivoted rearward as indicated by arrow 158 to a non-operating position (not shown), the electrical connection between the current collecting terminal 156 and the power supply rail 146 is released. You. This power supply mechanism is disclosed in the specification and drawings of a patent application (name: power supply mechanism in an assembly line) filed on July 12, 1988 by one of the present applicants (Mita Kogyo Co., Ltd.). Substantially the same, so refer to the above specification and drawings for details.

In a specific example, the drive release means 16 shown in FIGS. 8 and 9 corresponds to a predetermined area in the assembly line, that is, a work area such as an assembly area where the carriage 2 is temporarily stopped or an adjustment area.
0 is provided. The drive release means 160 shown in FIG.
2 (FIGS. 1 and 8) is provided with a release plate 164 extending in the moving direction of the carriage 2 (see also FIG. 4). The release plate 164 is provided adjacent to the guide member 22, and is provided with an inclined guide portion 166a that extends inclining upward in the direction indicated by the arrow 162, and a horizontal action portion 166b that extends substantially horizontally following the inclined guide portion 166a. And a blocking portion 166c extending substantially vertically upward at one end of the horizontal action portion 166b, and as shown by a two-dot chain line in FIG. 166a and the horizontal action part 166b are moved. One end (left end in FIGS. 8 and 9) of the release plate 164 is pivotally connected to the base 170 via a link member 168, and the other end (right end in FIGS. 8 and 9). Is pivotally connected to the base 170 via a link member 172. That is, one ends of the link members 168 and 172 are pivotally connected to brackets 174 and 176 mounted on the lower surface of the release plate 164 via pins, and the other ends thereof are brackets mounted on the upper surface of the base 170. 1
It is pivotally connected to 78 and 180 via pins.
A cylinder mechanism 182 (constituting an actuating means) such as a pneumatic cylinder mechanism is further connected to one end of the release plate 164. In a specific example, the cylinder body 184 of the cylinder mechanism 182 is pivotally connected to a support member 186 fixed to the base 170 via a pin, and has an output rod 187.
Is a bracket 188 attached to the lower surface of the release plate 164.
Are connected to each other via pins. With this configuration, when the cylinder mechanism 182 is contracted, the release plate 164 is positioned at the raised position (the position also shown in FIG. 9) indicated by the solid line in FIG. In this raised position, the inclined guide portion 166 of the release plate 164
The upper part of a, the horizontal action part 166b and the blocking part 166c protrude into the movement path of the roller 90 of the bogie 2. On the other hand, when the cylinder mechanism 182 is extended, the link members 168 and 172 are pivoted clockwise in FIG. 8, and the release plate 168 is located at the lowered position shown by the two-dot chain line in FIG. In this lowered position, the entire release plate 164, that is, the inclined guide portion 166
a, The horizontal action portion 166b and the blocking portion 166c retreat downward from the movement path of the roller 90, and thus the release plate 164 does not act on the roller 90. In the specific example, as shown in FIG. 8, the link member 168 is longer than the other link member 172. Therefore, in the raised position, the horizontal action portion 166b of the release plate 164 is substantially It extends upward and horizontally, while the release plate 16 is in the lowered position.
The fourth horizontal action portion 166b extends downward from one end to the other end, whereby the blocking portion 166c is moved sufficiently downward, and the blocking portion 166c is reliably prevented from acting on the roller 90. .

In a specific example, a downward movement preventing means for preventing the release plate 164 from moving downward beyond the above-mentioned downward position is provided. The illustrated downward movement preventing means is composed of a bolt 190 screwed to the base 170 and acts on the lower surface of the other end of the release plate 164 to prevent the release plate 164 from lowering. Note that the lowering position of the release plate 164 can be adjusted by changing the height of the bolt 190.

Below the release plate 164, a switch means 192 for extending the cylinder mechanism 182 is provided. The illustrated switch means 192 has a detection unit 194,
Mounted on 0. In addition, an operating member 196 is provided in association with the switch means 192. A pair of support members 198 and 200 are attached to both ends of the base 170. On the other hand, the mounting block 2
02 and 204 are fixed, and these mounting blocks 202 and 204 are pivotally mounted on support members 198 and 200 via a short axis. Therefore, as shown in FIG.
196 is a non-operating position indicated by a solid line about the short axis (in this non-operating position, the operating member 196 is connected to the switch means 192
Does not act on the detecting portion 194a) and the operating position indicated by the two-dot chain line (in this operating position, the operating member 196 pushes the detecting portion 194 of the switch means 192 to the operating state, whereby the cylinder mechanism 182 is extended). In the specific example, the release plate 164
In response to the horizontal action portion 166b extending over a predetermined range, the action member 196 also extends from substantially one end of the release plate 164 to substantially the other end thereof. A transmission lever, which will be described later, acts on the operation member 196 at any position of the portion 166b.

The cart 2 is further provided with an action member 196 as shown in FIG.
Operating member 20 for turning the
6 and transmission means 208 are provided. At the front end of the bogie main body 6, a front auxiliary frame 210 protruding forward is provided. The front auxiliary frame 210 has walls 212 and 214 spaced apart in the front-rear direction.
6 (connect one end of walls 212 and 214) and connecting member 218
And 220, and one wall 212 is fixed to the front surface of the bogie main body 6. The operating member 206 is provided at the other end of the walls 212 and 214, and mounting portions 224 provided at both ends of the operating portion 222 are pivotally connected to the walls 212 and 214 via a shaft member 226. The operation member 206 is disposed at the bottom of the bogie main body 6 at the right front end, so that the operator can step on the operation unit 222 with his / her feet. It is to be noted that the operation member may be arranged in the operation unit 14, for example, so that the operator can operate the operation unit by hand. The transmission means 208 includes a transmission wire 226 and a transmission lever 228. A projecting piece 230 is fixed to the outer surface of the wall 216 of the front auxiliary frame 210, and a transmission lever 228 is pivotally mounted on the projecting piece 230 via a pin 232. One end of the transmission lever 228 projects outward through an opening formed in the wall 216, and this one end acts on the operation member 196. The transmission wire 226 is composed of a metal wire covered by a holding tube, and one end of the metal wire is connected to the operation member 206 (specifically, one mounting portion 224), and the other end is a front auxiliary frame 210 of the transmission lever 228. It is connected to the other end located inside. With this configuration, the operating members
When the operation unit 222 of the 206 is depressed with a foot, the transmission lever 228 is pivoted outward through the transmission wire 226 to the position indicated by the two-dot chain line indicated by the arrow 234. In the specific example, the transmission wire 226 is
It is attached to the connection members 218 and 220 by the attachment band 236.

The operation and effect of the driving mechanism will be described below.

Referring mainly to FIG. 1, FIG. 4, FIG. 5, and FIG. 8, in order to move the bogie 2 along the assembly line, as shown in FIG. 44 is moved to the connection position, and the second member 124 of the guided means 118 is moved to the operation position. Further, the power supply unit 142 and the current collection unit 144 provided on the cart 2 are electrically connected. Thus, the engaging claw 34 (any one of the plurality of engaging claws 34) provided on the drive chain 24 moving in the direction indicated by the arrow 36 abuts on the connecting pin 68, and the engaging claw 34 and the connecting pin 68
The carriage 2 is thus moved in the direction indicated by the arrow 162 by the pushing action of the drive chain 24 which moves in the direction indicated by the arrow 36 (see also FIG. 6). During such movement, the guided roller 66 is located at the front of the carriage body 6.
Are guided as required by the roller guide portions 20b and 22b of the guide means 4 (FIG. 6).
The guided roller 136 mounted on the member 124 is guided as required by the roller guide portions 20b and 22b of the guide means 4, and the bogie 2 is moved along the guide means 4 by the action of the pair of guided rollers 66 and 136. You will be surely guided.

When the carriage 2 is moved to the work area (in other words, the area where the release plate 164 is provided) as described above, the roller 90 provided on the revolving unit 44 of the carriage 2 is moved to the release plate in the raised position. 164 connected to the upper surface and its inclined guide 1
Moved up along 66a. Then, the rotating body 44
Is pivoted upward about the shaft member 56 in the direction shown by the arrow 92 (FIG. 5), and the roller 90 is thus released from the release plate.
When the revolving structure 44 is moved to the horizontal action portion 166b of the 164, the revolving structure 44 is held at the release position shown by a two-dot chain line in FIG. When positioned at such a release position, the connecting pin 68 (FIG. 6) provided on the revolving unit 44 is positioned above the movement path of the engaging claw 34 of the drive chain 24, and thus the connecting pin 68 and the drive chain 24 The drive connection is released, and the movement of the carriage 2 is stopped. Even when the drive connection between the engagement claw 34 and the connection pin 68 is released, the carriage 2 does not stop suddenly, but rather moves and stops due to its inertia force. The carriage 2 comes to a stop at a position located at a substantially central portion or a tip portion in the longitudinal direction of the portion 166b. When the roller 90 moves to the tip of the horizontal action portion 166b, it comes into contact with the blocking portion 166c. Therefore, when the roller 90 goes over the blocking portion 166c, the movement is blocked, and thus the carriage 2 moves beyond the work area without stopping temporarily. Never. As described above, when the carriage 2 moves to the work area, the release plate 1 of the drive release means 160 is released.
The engaging claw between the connecting pin 68 and the drive chain 24 by the action of 64
The drive connection with 34 is released, and the bogie 2 is stopped as required in the work area.

To remove the bogie 2 from the assembly line, the revolving unit 44 is moved to the arrow 92
(FIG. 5), the second member 124 of the guided means 118 is turned in the direction shown by the arrow 140 (FIG. 7), and the second member 124 of the guided means 118 is turned in the direction shown by the arrow 140 (FIG. 7). Is indicated by a two-dot chain line). Thus, the guided roller 66 and the connecting pin 68 mounted on the revolving body 44 are separated from the guide groove of the guide means 4 and the guided roller 136 mounted on the second member 124 is also moved to the guide groove of the guide means 4. From the assembly line, so that the carriage 2 can be freely moved out of the assembly line. In order to move the carriage 2 removed from the assembly line along the line again as described above, the carriage 2 is positioned close to the guide means 4, and then the revolving unit 44 is moved from the detached position to the connection position. At the same time, the second member 124 may be moved from the detached position to the operating position.

In order to move the carriage 2 stopped in the work area as described above, the operation section 222 of the operation member 206 may be stepped on with a foot (FIG. 10). Thus, the movement of the operation member 206 is transmitted to the transmission lever 228 via the transmission wire 226, and the transmission lever 228 is turned in the direction shown by the arrow 234 to the position shown by the two-dot chain line in FIG. Thus, one end of the transmission lever 228 acts on the operating member 196 to move from the non-operating position (the position shown in FIG. 8 and the solid line in FIG. 9) to the operating position (the two-dot chain line in FIG. 9). (The position indicated by), whereby the switch means 192 is activated.
Thus, the extension side (cylinder side) of the cylinder mechanism 182
Is supplied with a pressure fluid such as compressed air, whereby the cylinder mechanism 182 is extended. When the cylinder mechanism 182 is extended, the link members 168 and 172 are pivoted clockwise in FIG. 8, and the release plate 164 is moved from the raised position (the position shown by the solid line in FIG. 8) to the lowered position (the eighth position). (The position shown by the two-dot chain line in the figure)
When the 164 is separated from the roller 90 of the rotating body 44, the rotating body 44 is positioned from the release position to the connection position. The drive chain thus moves in the direction indicated by arrow 36
When the engaging claws 34 of the 24 come into contact with the connecting pins 68, the two are driven and connected, and the carriage 2 is moved together with the drive chain 24. When the carriage 2 moves a predetermined distance, the cylinder mechanism is moved.
182 is contracted. Thus, the link members 168 and 172
Is turned counterclockwise in FIG.
164 is positioned in the raised position, and the subsequent bogie 2 is stopped as described above by the action of the release plate 164 in the raised position.

As described above, one specific example of the bogie drive mechanism configured according to the present invention has been described. However, the present invention is not limited to such specific example, and various modifications and corrections can be made without departing from the scope of the present invention. It is.

<Effect of the Invention> The bogie drive mechanism according to the present invention has a simple structure as a whole, can be manufactured at low cost, and can easily and smoothly perform intermittent movement of the bogie. Further, generation of noise is prevented, and durability is improved.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a plan view showing a part of an assembly line to which a specific example of a drive mechanism according to the present invention is applied. FIG. 2 is an enlarged front view showing a part of a drive chain in the drive mechanism shown in FIG. 1; FIG. 3 is an enlarged plan view showing a part of the drive chain in FIG. 2; FIG. 4 is a plan view showing a connecting portion between a drive chain and a bogie in the drive mechanism of FIG. FIG. 5 is a sectional view taken along line VV in FIG. FIG. 6 is a side view of a connecting portion between the drive chain and the bogie shown in FIG. FIG. 7 is a cross-sectional view showing the guided means provided on the bogie of FIG. 1 and its vicinity. FIG. 8 is a front view showing a drive release means provided in a work area. FIG. 9 is a plan view of the drive release means shown in FIG. FIG. 10 is a cross-sectional view showing a front end of the bogie. 2 trolley 4 guide means 6 trolley body 24 drive chain 34 engaging claw 44 revolving body 66 and 136 guided rollers 68 connecting pins 72 and 74 buffer means 90 Roller 118 Guided means 160 Drive release means 164 Release plate 182 Cylinder mechanism 192 Switch means 196 Working member 206 Operating member 208 Transmission means

 ──────────────────────────────────────────────────続 き Continuation of front page (56) References JP-A-59-29557 (JP, A)

Claims (2)

(57) [Claims] A connecting member provided on the bogie main body and releasably connected to an engaging member fixed to a drive transmitting member which is moved in a predetermined direction; and a drive arranged corresponding to a work area. Releasing means, wherein the connecting member is provided on a revolving body mounted on the carriage, and the revolving body is driven by the connecting member when the connecting member is positioned on a movement path of the engaging member. It pivots between a connection position where the drive member is connected to the transmission member and a release position where the connection member is released from the movement path of the engagement member and the drive connection of the connection member to the drive transmission member is released. The revolving body is provided with a roller for driving release, and the driving releasing means has a release plate extending in the moving direction of the bogie, and the releasing plate is upwardly moved in the moving direction of the bogie. Inclined guide portion extending inclining and the inclined guide portion Subsequently, it has a horizontal action portion extending substantially horizontally, and a blocking portion extending substantially vertically upward at one end of the horizontal action portion, and from a rising position protruding into a movement path of the roller and a movement path of the roller. When the release plate is at the raised position, the roller is moved at least along the inclined guide portion and the horizontal action portion to move the rotating body to the connection position. From the release position to the release position, and when the release plate is moved to the lowered position, the release plate is separated downward from the roller to rotate the revolving body from the release position to the connection position. The drive mechanism of the bogie. 2. An actuating means for selectively positioning said release plate in said raised position and said lowered position is provided, and said actuating means is actuated in conjunction with said actuating means to release said release plate. Switch means for moving the switch means to the lowering position, and an operating member pivotally mounted between an operating position for closing the switch means and a non-operating position for opening the switch means, and 2. The bogie driving mechanism according to claim 1, wherein the bogie is provided with an operating member and a transmission means for transmitting the movement of the operating member to the operating member and moving the operating member from the non-operating position to the operating position.