JPH0614819A - Slide mechanism - Google Patents

Abstract

PURPOSE:To change two forward/backward motion mechanisms into one by operating a key of an operating part, controlling a motor, based on an output of a sensor by a control part and moving forward and backward a placing base against a frame body. CONSTITUTION:When a motor of a frame body vertical motion mechanism is operated and a frame body 31 descends to a prescribed height, the frame body 31 turns on a limit switch, therefore, this motor is stopped. In such a state, a motor 86 of a forward/backward motion mechanism is operated and gears 90L, R are rotated counterclockwise. Toothed belts 92L, R guided by pulleys 91L, R are fed to the left side by the gears 90L, R. Accordingly, a frame body 61 is guided by first guide rails 81L, R - second bearings 85L, R and moved to the left direction. When the frame body 61 moves to an advance position and turns on a limit switch 94F, the motor 86 is stopped and a tray 215 is maintained in its position. Accordingly, an operator can obtain a desired article from the tray 215.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a slide mechanism capable of sliding a mounting table on which an article is mounted in a longitudinal direction with respect to a frame.

[0002]

2. Description of the Related Art The conventional slide mechanism as described above is
A slide mechanism (or a drive mechanism) is provided between the frame and the left and right of the mounting table. And 2
When one slide mechanism is operated to move the mounting table back and forth with respect to the frame, the two slide mechanisms are operated in synchronization with each other to move the mounting table back and forth with respect to the frame.

[0003]

In the conventional slide mechanism, since the two slide mechanisms must be synchronized as described above, the structure is complicated and the mounting table can be smoothly moved back and forth. There was an inconvenience that it could not be done. The present invention has been made to solve the above-described inconvenience, and provides a slide mechanism having a simple structure and capable of smoothly moving a mounting table back and forth.

[0004]

A slide mechanism according to the present invention includes a pair of first guide rails mounted inside a U-shaped frame and a pair of first guide rails on the pair of first guide rails. A pair of second guide rails movably supported in the front-rear direction via one bearing, and a pair of second guide rails movably supported in the front-rear direction via a pair of second bearings. A pair of third guide rails, and a mounting table attached to the pair of third guide rails,
A motor provided on the rear side of the frame body, a pair of gears rotated by the motor, a pair of pulleys provided on the lower front side of the frame body, and a pair of third guide rails or a mounting table. A pair of toothed belts, one end of which is attached to the rear end, is meshed with a gear and then wound around a pulley, and the other end of which is attached to the rear ends of the pair of third guide rails or the mounting table, and the moving position of the mounting table. And a control unit that controls the motor based on the input from the operation unit and the outputs of the plurality of sensors to move the mounting table back and forth.

[0005]

In the slide mechanism of the present invention, the control section controls the motor based on the output of the sensor to move the mounting table back and forth with respect to the frame body by operating the key of the operation section.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. 1 is an external perspective view showing a partially cutaway article transfer device to which a slide mechanism according to an embodiment of the present invention is applied, and FIG. 2 is a right side surface of the article transfer device shown in FIG. FIG. 3 is a plan view of the article transfer device shown in FIG. 1 from which the top plate is removed, FIG. 4 is an explanatory view showing a support column and a frame body, and FIG. 5 is an engagement relationship between the support column and the frame body. FIG. 6 is an explanatory view showing the structure of the support body, and FIG. 7 is an explanatory view showing the structure of the frame body vertical movement mechanism. Note that, in FIG. 5, since the four columns have the same configuration, only the right front column is shown.

In these figures, 1 is a rectangular bottom
Board, 2F_L, 2F_RIs attached to the left and right corners on the front side of the bottom plate 1.
Shown pillars, pillar 2F_L, 2F_ROpposite sides of
Slide plate 32F described later in_L, 32F_RUp and down
Guide groove 2f to guide_L, 2f _RIs provided. 2B
_L, 2B_RAre attached to the left and right corners on the rear side of the bottom plate 1.
A slide plate 32, which shows a pillar, and which will be described later on the opposite surface.
B_L, 32B_RGroove 2b for guiding the vertical direction_L, 2
b_RIs provided.

3 is a top plate, 4L is a left side plate, 4R is a right side plate, and 4B is a back plate. 11 Vertical attached to the bottom plate 1 plate, 12 _1, 12 _2, 12 _3, 12 ₄ and 12 ₅ shows a shelf plate provided in a horizontal state multistage one surface (front surface) of the vertical plate 11, vertical plate 11 and shelf 12
Constitute a support 13 at _{1-12 5.} 21 ₁ , 21
Reference numerals ₂ , 21 ₃ , 21 ₄ and 21 ₅ denote trays, and the trays 12 _{1 to} 12 _{5 have} a shape in which a side surface portion is expanded upward from a bottom portion.
Greater than, when placed on each shelf 12 ₁ to 12 _5, in which is positioned at a predetermined position.

[0009] 31 represents a U-shaped frame body the front part open, the support 13 and the support _{2F L, 2F R, 2B L} , 2B
Slide plates 32F _L and 32B _{L, which} are located between _R and _R, and which are guided in the vertical direction by engaging with the guide grooves 2f _L and 2b _L of the columns 2F _L and 2B _L , are attached to the outer right side. The slide plates 32F _R and 32B _R are engaged with the guide grooves 2f _R and 2b _R of the columns 2F _R and 2B _{R and} are guided vertically.
Is attached. Then, the slide plate 32F _R ,
As will be described later, the length of 32B _{R in} the vertical direction is not limited to the trays 21 _{1 to} 21 ₅ even if the trays 21 _{1 to} 21 ₅ are moved back and forth.
The length of the article placed on the shutter 101U does not collide with the shutter 101U, that is, the shelves 12 ₁ , 12 ₂ , 12 ₃ , 12 ₄ ,
The interval length is 12 ₅ .

Reference numeral 41 is a first motor, 42L and 42R are sprockets attached to the rotating shaft of the first motor 41, 43F _D , 43F _U , 43B _D and 43B _U are driven shafts, 44F _DC , 44F _DL and 44F. _DR is driven shaft 43
Sprockets attached to the center and both ends of F _D , 44F _UL and 44F _UR are sprockets attached to both ends of the driven shaft 43F _U , 44B _DC and 44B _DL
And 44B _DR are sprockets attached to the central portion and both end portions of the driven shaft 43B _D , 44B _UL and 44B.
_UR indicates sprockets attached to both end portions of the driven shaft 43B _U.

45F_DIs sprocket 42L and sprocket
44F_DCChain stretched between and 45F_LIs
Sprocket 44F_DLAnd sprocket 44F_ULBetween
Stretched chain, 45F_RIs sprocket 44F_DR
And sprocket 44F_URThe chain stretched between
Show. 45B_DIs sprocket 42R and sprocket 4
4B_DCChain stretched between and 45B_LIs a pro
Ket 44B_DLAnd sprocket 44B_ULStretched between
Chain, 45B_RIs sprocket 44B_DRAnd sp
Rocket 44B_URShows a chain stretched between
First motor 41 to chain 45F_D, 45F _L, 45
F_R, 45B_D, 45B_L, 45B_RWith frame body vertical movement mechanism
It comprises 46.

Both ends of the driven shafts 43F _D and 43B _D are receiving plates 47L attached to the lower ends of the columns 2F _L and 2B _L.
D and a receiving plate 47R _D attached to the lower ends of the columns 2F _R and 2B _R are rotatably supported, and driven shafts 43F _U and 4F
3B ends of the _U, a post 2F _L, a receiving plate 47L _U attached to the upper end portion of the 2B _L, post 2F _R, it is rotatably supported on a receiving plate 47R _U attached to the upper end portion of the 2B _R. The chain 45F _L, 45B _L, a portion P _FL of 45F _R and _{45B R, P BL, P FR} , P BR is the frame 3
It is fixed to the left and right of 1. In addition, the first motor 41
Is attached to, for example, a mounting plate mounted between the receiving plates 47L _D and 47R _D. 47B _D, 47B _U denotes posts 2B _L, the lower end portion of the 2B _R, a reinforcing plate attached to an upper end portion.

Reference numeral 51 denotes a pin projecting from the left side surface of the frame 31, reference numeral 52 denotes a mounting plate mounted between the receiving plates 47R _D and 47R _U , 53 ₁ , 53 ₂ , 53 ₃ , 53 ₄ and 5
3 ₅ shows a limit switch attached to the mounting plate 52, the limit switch 53 _{1-53 5} support 1
3 is adapted to the height of the shelf plate 12 ₁ to 12 ₅ is for detecting a moving position in the height direction of the frame 31. Reference numerals 54L and 54R denote constant tension springs of C-type Conston stretched between the receiving plates 47L _U and 47R _U and the left and right sides of the frame 31, and have the same load distribution when the frame 31 moves up and down. This is for vertically moving the frame body 31 at the same speed.

101D and 101U are roll-up type shutters
The shutter 101D is a receiving plate 47L._D, 47R_D
One end is rotatably attached to the other end and the other end slides
Board 32F_L, 32F_RAttached to the lower end of
On both sides, columns 2F_L, 2F _RGuide groove 2f_L, 2f_R
Will be guided in. Further, the shutter 101U is a receiving plate 47L.
_U, 47R_UOne end is rotatably attached to the other end
Side is slide plate 32F_L, 32F_RAttached to the upper end of
Both sides are pillars 2F_L, 2F_RGuide groove 2
f_L, 2f_RWill be guided in.

FIG. 8 is a plan view showing the tray holding mechanism, and FIG.
Is an explanatory view showing a part of the power transmission mechanism of the tray holding mechanism,
10A and 10B and FIGS. 11A and 11B are explanatory views showing a non-operating state and an operating state of the tray holding mechanism, and FIG. 9 shows a state in which the holding piece is moved to the holding state. Is. In these figures, reference numeral 61 denotes a U-shaped frame body having an open rear surface portion, which can be moved in the horizontal direction with respect to the frame body 31.

Reference numeral 62 is a second motor mounted inside the front surface of the frame 61, 63 is a gear mounted on the rotary shaft of the second motor 62, and 64 is both ends inside the front surface of the frame 61. The screw rods and 65 supported by the screw rods and 65 are gears attached to the screw rod 64, and the gear 65 is meshed with the gear 63. 66 is a threaded pipe screwed into the screw rod 64, 67
Is an L-shaped transmission rod whose one end is attached to the screw tube 66,
Reference numeral 68 denotes a connecting rod rotatably attached to the other end of the transmission rod 67.

The reference numeral 69F designates a rotating rod having a central portion rotatably attached to the central portion inside the front surface of the frame 61, and 70.
F _U is transmitted rod having one end portion (upper portion) at one end portion of the rotation bar 69F is mounted movably in three dimensions, 70F
_D is a transmission rod having one end attached to the other end (lower part) of the rotating rod 69F so as to be three-dimensionally movable. 7
1F _L is a link whose lower end portion is rotatably attached to the inner left front corner of the frame 61, 71F _R is a link whose lower end portion is rotatably attached to the inner right front corner of the frame 61,
72F _L represents a holding piece attached to the upper end portion of the link 71F _L, a portion of the holding piece 72F _L is transmitted rod 7
It is attached to the other end of 0F _{U so} as to be movable three-dimensionally.

Reference numeral 72F _R indicates a holding piece attached to the upper end portion of the link 71F _R , and a part thereof is attached to the other end portion of the transmission rod 70F _D so as to be movable three-dimensionally.
69L is a rotating rod having a central portion rotatably attached to the inner central portion of the left side portion of the frame 61, and 70L _U is attached to one end portion of the rotating rod 69L so that one end portion can be moved three-dimensionally. The transmission rod 70L _D is a transmission rod having one end attached to the other end of the rotary rod 69L so as to be movable three-dimensionally.

The reference numeral 69R designates a rotating rod having a central portion rotatably attached to a central portion inside the right side portion of the frame 61, and 70
R _U is transmitted rod having one end portion to one end portion of the rotation bar 69R is mounted movably in three dimensions, 70R _D is rotation bar 6
The transmission rod has one end attached to the other end of 9R so as to be movable three-dimensionally. 71B _L is a link in which the lower end portion of the left rear corner inside the frame 61 is rotatably attached,
71B _R is a link whose lower end is rotatably attached to the front left corner inside the frame 61, and 72B _L is a link 71B _L
A holding piece 72B _R attached to the upper end portion of the link 71B _R is a holding piece attached to the upper end portion of the link 71BR.

The rotating rods 69F, 69L, 69R, the transmission rods 70F _U , 70F _D , 70L _U , 70L _D , 70R.
_U, 70R _D, the link _{71F L, 71F R, 71B L} ,
Since 71B _R is connected as described above, the same operation is performed. The holding piece 72F _L, 72F _R, 72B
_L, the holding surface of the 72B _R is the matched surfaces to be held portion of the tray 21 ₁ to 21 _5.

73F_L, 73F_R, 73B_LAnd 73
B_RIndicates a toggle spring, a holding piece 72F_L, 72
F_R, 72B_L, 72B_RThe non-holding position or holding position
It has the function of being located at. Frame 6 mentioned above
1-Toggle spring 73F_L, 73F_R, 73B_L，
73B _RConstitutes a tray holding mechanism 74 corresponding to the mounting table
is doing. 75 and 76 are provided inside the left side of the frame 61
Shows the limit switch that has been turned on and indicates the turning position of the turning rod 69L.
It is for detecting the position (operating state).

FIG. 12 is an explanatory view showing the structure of the tray front-back movement mechanism, and FIGS. 13A, 13B, and 13C are explanatory views showing the front-back movement position of the tray holding mechanism by the operation of the tray front-back movement mechanism. is there. In these figures and FIG.
L and 81R are first guide rails attached to the left and right inner sides of the frame body 31, and 82L and 82R are first guide rails 8
The second guide rail 8 arranged inside 1L and 81R
3L and 83R indicate third guide rails arranged inside the second guide rails 82L and 82R, and the third guide rails 83L and 83R are attached to the left and right outer sides of the frame 61.

84L and 84R are first guide rails 81
The first bearings 85L and 85R arranged between the L and 81R and the second guide rails 82L and 82R are the second guide rails 82L and 82R and the third guide rail 83L, respectively.
83R shows a second bearing located between the two. 8
6 is a third motor such as an ultrasonic motor attached to the rear side of the frame 31, 87 is a bevel gear attached to the rotating shaft of the third motor 86, and 88 is a rear side of the frame 31. A shaft rotatably attached, and 89 are bevel gears attached to the shaft 88, and this bevel gear 89 meshes with a bevel gear 87.

Reference numerals 90L and 90R denote gears attached to both ends of the shaft 88, 91L and 91R denote pulleys attached to the front and lower sides on the left and right inner sides of the frame 31, and 92L and 92R denote toothed belts. The attached belts 92L and 92R have one end attached to the upper side of the rear ends of the third guide rails 83L and 83R and the other end attached to the lower side of the rear ends of the third guide rails 83L and 83R. Guide rail 83L,
From the rear end of 83R, gears 90L, 90R, pulleys 91L,
It reaches the rear end of the third guide rails 83L, 83R via 91R. First guide rail 81 described above
L, 81R to toothed belts 92L, 92R constitute a tray longitudinal movement mechanism 93 as a slide mechanism.

Reference numerals 94B, 94C and 94F denote limit switches, and the limit switch 94B is a tray holding mechanism 7.
4, that is, the retracted position of the frame 61 is detected, the limit switch 94C detects the intermediate stop position of the frame 61, and the limit switch 94F detects the advanced position of the frame 61. . The intermediate stop position is a retracted position in which the tray held by the tray holding mechanism 74 does not collide with the tray placed on the support 13 even if the tray holding mechanism 74 is moved up and down by the frame body up-and-down moving mechanism 46. A position between the forward position and the forward position.

Next, the operation will be described. First, the tray 21 in which the frame 31 is placed on the lowermost shelf 12 _1
In a state corresponding to ₁ (standby position), a tray on which desired articles are placed, for example, the top shelf 12
_In order to transfer the tray 21 ₅ placed on the tray ₅ , after operating the automatic key of the operation unit (not shown), the tray 2
When the user operates the shelf designating key 1 ₅ , that is, the shelf designating key 21 ₅ , the control unit including a microcomputer (not shown) operates the first motor 41 of the frame up-and-down moving mechanism 46 to move the frame. Raise the body 31.

Then, when the frame body 31 moves up to a position corresponding to the shelf plate 12 ₅ and the limit switch 53 ₅ is operated, the first motor 41 is stopped and the tray holding mechanism for holding the tray 21 _5. The second motor 62 of 74 is operated. Incidentally, the frame vertically moving mechanism 46 is the tray 21 ₂ -
Passes through the position of the limit switch 53 _{2-53 4} corresponding to 21 _4, the limit switch 53 _{2-53 4} outputs a signal which becomes off again turned from off to on.

Next, when the second motor 62 operates, the net
Since the rod 64 rotates to move the screw tube 66,
The pipe 66, the transmission rod 67, and the connecting rod 68 have a rotating rod 69F.
In FIG. 10B, the transmission rod 7 is rotated counterclockwise.
0F_U, 70F_DVia the holding piece 72F_L, 72F_RTo
Since it will be pulled, the holding piece 72F_L, 72F_RIs phosphorus
71F_L, 71F_RTo move away from the frame 61
It Incidentally, the other rotating rods 69L and 69R, the transmission rod 70
L_U, 70L_D, Link 71B _L, 71B_RAnd hold
Piece 72B_L, 72B_RWorks similarly.

[0029] Then, the holding pieces 72F screw rod 64 is then moved a predetermined distance _L, 72F _R, 72B _L, the 72B _R comes into contact with the four corners of the tray 21 _5, the limit switch 76 after the limit switch 75 is turned off Is turned on,
The second motor 62 is stopped. At this time, the toggle spring _{73F L, 73F R, 73B L} , 73B R link 71F _L against the frame _{61, 71F R, 71B L,} 7
Since it is located inside the rotation fulcrum of 1B _R (on the side of the tray 21 ₅ ), the holding pieces 72F _L , 72F _R , 72B _L , 72
B _R is a toggle spring 73F _L , 73F _R , 73
The tray 21 ₅ is pressed against the tray 21 ₅ by the biasing force of B _L and 73 B _R to hold the tray 21 ₅ .

In this state, the third motor 86 is operated,
When the gears 90L and 90R are rotated counterclockwise in FIG. 13A, the toothed belts 92L and 92R guided by the pulleys 91L and 91R are sent to the left side by the gears 90L and 90R, so that the frame body 61 is 1 guide rail 81
L, 81R to the second bearing 85L, 85R is guided and moved leftward. Then, the frame body 61 is a predetermined position, that the tray holding mechanism 74 intermediate stop position where the tray 12 ₅ be moved up and down does not abut the like other trays 12 ₁ to 12 _4, i.e. in the position shown in FIG. 13 (b) When the limit switch 94C is turned on by moving, the third motor 86 is stopped, and then the first motor 41 is operated.
The frame body 31 is lowered.

As described above, the first motor 41 operates so that the frame body 31 has a predetermined height, that is, a height at which a person in bed can easily reach for a product, for example, a height position of the shelf board 12 _2. When the frame 31 is lowered to the limit switch 53 ₂
Is turned on, the first motor 41 is stopped. In this state, the third motor 86 is operated so that the gears 90L, 9L
When the 0R is rotated counterclockwise in FIG. 13B, the toothed belt 92 guided by the pulleys 91L and 91R.
Since the L and 92R are sent to the left side by the gears 90L and 90R, the frame body 61 includes the first guide rails 81L and 81R.
It is guided by the second bearings 85L and 85R and moves leftward.

When the frame 61 is moved to the forward position, that is, the position shown in FIG. 13C and the limit switch 94F is turned on, the third motor 86 is stopped and the tray 2
Keep 1 ₅ in that position. Therefore, the operator
The desired item can be obtained from the tray 21 ₅ .

In this way, the desired articles are transferred to the tray 21 _5.
To return the tray 21 ₅ to its original position after
When operating the key return of the operation unit, the operation of each unit becomes the operation reverse of the foregoing, the tray 21 ₅ is returned to the shelf plate 12 _5, the frame 31 returns to the position of the shelf plate 12 _1. This completes a series of operations. It should be noted that such an operation can also be performed by operating a manual key of the operation unit.
The shutters 101D and 101U are the slide plates 3
2F _L, moves up and down while holding the opening formed by 32F _R.

As described above, according to the embodiment of the present invention, the toothed belts 92L and 92L are provided only by the third motor 86.
Since the tray holding mechanism 74 can be moved back and forth by driving R, the structure is simplified and the tray holding mechanism 74 can be moved back and forth smoothly.

Although the above-described embodiment has been described by taking the case where each mechanism has the best configuration, unnecessary parts can be omitted as long as they can function similarly. Further, by providing casters on the bottom plate 1, it can be easily moved. Further, the example in which the mounting table is the tray holding mechanism 74 has been described, but an ordinary flat plate may be used. Further, the example in which both ends of the toothed belts 92L and 92R are attached to the third guide rails 83L and 83R has been described.
Both ends of the toothed belts 92L and 92R have a tray holding mechanism 74.
May be attached to.

[0036]

As described above, according to the present invention, a pair of first guide rails mounted inside a U-shaped frame and a pair of first guide rails on the pair of first guide rails. Pair of second guide rails that are movably supported in the front-rear direction via bearings, and a pair of second guide rails that are movably supported in the front-rear direction via a pair of second bearings. A pair of third guide rails, a mounting table attached to the pair of third guide rails, a motor provided on the rear side of the frame, a pair of gears rotated by the motor, and a frame A pair of pulleys provided on the front inner and lower sides of the front end and one end of the pair of third guide rails or a mounting table at the rear ends thereof, and after being engaged with a gear, the pulley is wound around the pair of third guide rails. Or one with the other end attached to the rear end of the mounting table. Toothed belt, a plurality of sensors that detect the moving position of the mounting table, and a control unit that controls the motor based on the input from the operation unit and the outputs of the plurality of sensors to move the mounting table back and forth. Therefore, the structure is simple and the mounting table can be smoothly moved back and forth.

[Brief description of drawings]

FIG. 1 is an external perspective view showing a partially cutaway article transfer device to which a slide mechanism according to an embodiment of the present invention is applied.

FIG. 2 is a side view from the right side surface of the article transfer device shown in FIG. 1 from which a right side plate is removed.

FIG. 3 is a plan view of the article carrying device shown in FIG. 1 with a top plate removed.

FIG. 4 is an explanatory view showing columns and a frame body.

FIG. 5 is an explanatory diagram showing an engagement relationship between a support column and a frame body.

FIG. 6 is an explanatory diagram showing a configuration of a support.

FIG. 7 is an explanatory diagram showing a configuration of a frame body vertical movement mechanism.

FIG. 8 is a plan view showing a tray holding mechanism.

FIG. 9 is an explanatory diagram showing a part of a power transmission mechanism of the tray holding mechanism.

10 (a) and 10 (b) are explanatory views showing a non-operating state of the tray holding mechanism.

11A and 11B are explanatory views showing an operating state of the tray holding mechanism.

FIG. 12 is an explanatory diagram showing a configuration of a tray front-back movement mechanism.

13 (a), (b), and (c) are explanatory views showing the forward / backward moving position of the tray holding mechanism by the operation of the tray forward / backward moving mechanism.

[Explanation of symbols]

31 frame 74 tray holding mechanism 81L, 81R first guide rails 82L, 82R second guide rails 83L, 83R third guide rails 84L, 84R first bearing 85L, 85R second bearing 86 third motor 87,89 Bevel gear 88 Shaft 90L, 90R Gear 91L, 91R Pulley 92L, 92R Toothed belt 93 Tray longitudinal mechanism 94B, 94C, 94F Limit switch

Claims (1)

[Claims] 1. A pair of first guide rails mounted inside a U-shaped frame, and a pair of first guide rails that are movable in the front-rear direction via a pair of first bearings. A pair of second guide rails supported, a pair of third guide rails supported by the pair of second guide rails so as to be movable in the front-rear direction through a pair of second bearings, and the pair of third guide rails. A mounting table attached to the third guide rail, a motor provided on the rear side of the frame, a pair of gears rotated by the motor, and a front inner lower side of the frame. A pair of pulleys, one end of the pair of third guide rails or the rear end of the mounting table is attached to one end, and the pulley is wound around the pulley after meshing with the gear, and the pair of third guide rails or the mounting table. The other end is attached to the rear end of A pair of toothed belts, a plurality of sensors that detect the moving position of the mounting table, and a control that moves the mounting table back and forth by controlling the motor based on the input from the operation unit and the outputs of the plurality of sensors. And a slide mechanism.