JPH0572281U - Curtain open / close drive - Google Patents

Abstract

(57) [Summary] (Correction) [Purpose] The present invention counts the movement amount of each carten opened and closed in the opposite directions of the left and right by a counter, and the counted value becomes a set value. By controlling the stop of the motor, the stop control mechanism is simplified and workability is improved.
It is an object of the present invention to provide an opening / closing drive device for a ten. According to the present invention, the drive pulley 13 connected to the motor output is provided with counters 26 and 27 for counting the rotation amount corresponding to the movement amount of the cart 10 of the drive pulley. The present invention is characterized in that it is an opening / closing drive device for a cart in which a counter is provided with a switch for stopping and controlling the motor when the count value of the counter reaches a set value.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an opening / closing drive device for a carten, for example, which opens / closes the cartes arranged on the left and right in opposite directions, and more specifically, a drive source at an opening / closing position set on the carten. The present invention relates to an opening / closing drive device for a carten for stopping and controlling a vehicle.

[0002]

[Prior Art]

 Conventionally, this type of cart opening / closing drive device, for example, connects a driving pulley that drives the left and right cartes to the output shaft of the motor, and links the belt to this pulley. The leading runners provided on the back side and the front side of the belt are separately locked to the ends of the left and right cartes, and the above motors are driven in the forward and reverse directions to be placed on the left and right sides. It is configured to open and close the carton in opposite directions.

The stop control of the motor at the moving end portion of the above-mentioned carten is performed by, for example, installing a limit switch on the cart rail of the moving end portion of the above-mentioned front runner in a pair. When the mitt switch is operated by moving the carten to control the motor to be turned off, wiring work for the limit switch is required, which is very troublesome.

As another means, an overload of the motor received at the moving end of the carten is detected electrically or mechanically, and the motor is stopped and controlled by this detection signal. In this case, there is a problem that the structure becomes complicated both electrically and mechanically.

[0005]

[Problems to be solved by the device]

 This invention is a stop control mechanism that counts the moving amount of each carten opened and closed in opposite directions on the left and right by a counter and stops the motor when the counted value reaches a set value. The purpose of the present invention is to provide an opening / closing drive device for a carten that simplifies work and improves workability.

[0006]

[Means for Solving the Problems]

 In this device, a drive pulley connected to the motor output is provided with a counter for counting the rotation amount corresponding to the movement amount of the drive pulley, and the count value of this counter is set. It is an opening and closing drive device for a cart in which a counter is provided with a switch for stopping and controlling the motor when the value is reached.

[0007]

[Effect of the device]

 According to this invention, the counter and the switch for stopping and controlling the cartes that are opened and closed to the left and right are provided in the drive pulley of the carten, so that the limit switch is provided on the carten rail. Is unnecessary and installation work is simplified.

Further, since it is composed of a counter and a switch, the mechanism is simpler than the means for detecting the overload of the motor, and moreover, in the unit of the motor, the transmission system and the drive pulley. It can be housed and the opening / closing drive device can be made compact.

Further, since the stop control of the motor is performed by setting the count value of the counter that counts the rotation amount of the drive pulley to a set value, it is possible to easily perform the alignment and to make the fine setting. High accuracy can be obtained.

[0010]

【Example】

 An embodiment of the present invention will be described in detail below with reference to the drawings. The drawing shows an opening / closing drive device for a carten, and in FIG. 1, the cartons 10, 10 arranged on the left and right are suspended at their upper edges by a carten rail 11 arranged on the upper side. The outer ends are fixed, and the inner ends are opened and closed in opposite directions.

An endless drive belt 12 is stretched between a drive pulley 13 and a driven pulley 14 above the cart rail 11 and is connected to the front side of the drive belt 12. The leading runners 15 and 15 of the left and right cartes 10 and 10 are fixed to the back side, respectively, and the drive belt 12 is driven in the forward and reverse directions to open and close the cartes 10 and 10 in opposite directions. To be done.

The above-described drive pulley 13 is connected to the forward / reverse rotation motor 18 via two planetary gear reduction mechanisms 16 and 17, and each reduction mechanism 16 and 17 includes a sun gear 19, a planetary gear 20, and an interface. It is configured by a carrier 22 that supports the Naruga 21 and the planetary gear 20.

The output shaft 23 of the motor 18 is directly connected to the sun gear 19 of the front reduction gear mechanism 16, and the carrier 22 of the front reduction gear mechanism 16 is directly connected to the rear sun gear 19 and the rear reduction gear mechanism 17. The carrier 22 of is directly connected to the drive pulley 13. Although the internal gear 21 of the reduction gear mechanism 16 in the front stage is fixed to an appropriate fixing member, the internal gear 21 in the rear stage is provided so as to rotate freely and to be slightly movable in the vertical direction. An electromagnet 24 is provided on the outer peripheral portion of the internal gear 21, and the turning of the electromagnet 24 fixes or fixes the rotation of the internal gear 21.

Therefore, when the above-mentioned electromagnet 24 is turned on and the rotation of the internal gear 21 is fixed, the output of the motor 18 is driven via the two-stage speed reduction mechanisms 16 and 17. Input to 13 to drive this drive pulley 13 to open / close the cartes 10, 10. Further, when the electromagnet 24 is turned off, the internal gear 21 becomes free, so that the interlocking with the motor 18 is released, and the cartes 10, 10 can be opened and closed manually.

The output gear 25 is fixed to the drive pulley 13 described above, and the input gears 38 of the counters 26 and 27 are meshed with the output gear 25. The counters 26 and 27 described above are devices for controlling the driving of the motor 18 at the set opening / closing positions of the cartes 10 and 10, and one counter 26 is an opening side of the cart 10. The other counter 27 acts on the closed side of the carten 10 and counts the amount of rotation of the output gear 25 corresponding to the amount of movement of the carten 10, respectively.

Since the counters 26 and 27 have the same configuration, the configuration of the counter 26 on the open side will be described. As shown in FIGS. 2 and 3, a support shaft 37 is provided on a support frame 35 forming the outer shell of the counter 26, and an input gear 38 is supported at one end of the support shaft 37 in a loosely fitted state. An interlocking gear 39, which is supported by a support shaft 37 in a loosely fitted state, is connected to the input gear 38 and integrally rotates.

Further, the input gear 38 described above meshes with the output gear 25 described above, and the forward and reverse rotation of the drive pulley 13 is input.

The above-mentioned support shaft 37 supports three counting wheels 40, 41, 42 in a loosely fitted state, and these counting wheels 40 to 42 are the amount of rotation of the drive pulley 13 on the side of releasing the cartes. Are sequentially carried and counted.

A gear 44 and a heart cam 45 (see FIG. 4) are integrally formed on one side of each of the counting wheels 40 to 42 in the same direction. And the heart cam 45 operates to clear the set initial position, as will be apparent from the description below.

Further, feed claws 46, 46 are continuously formed on the other side of the two counting wheels 40, 41 on the lower girder side in the same direction, and these feed claws 46, 46 are arranged on the upper girder side. It is provided for intermittently shifting the counting wheels 41, 42.

An oscillating frame 47 is provided at a position facing each of the counting wheels 40 to 42 described above. It is oscillatably mounted on the counting wheels 40 to 42 by a spring 49 wound around a shaft 48.

A swing shaft 50 is erected on the swing frame 47 described above, and three swing-up gears 51 to 53 are supported by the swing shaft 50 in a loosely fitted state. It opposes the position between the wheels 40-42.

The first carry gear 51 described above meshes with the interlocking gear 39 and the gear 44 of the first counting wheel 40 to transmit the rotation of the interlocking gear 39 to the first counting wheel 40. The above-mentioned second carry gear 52 meshes with the feed pawl 46 of the first counting wheel 40 and the gear 44 of the second counting wheel 41 to rotate the first counting wheel 40 once. The movement is transmitted as the carry amount of the set amount of the second counting wheel 41.

The above-mentioned third carry gear 53 meshes with the feed pawl 46 of the second counting wheel 41 and the gear 44 of the third counting wheel 42, so that the first counting gear 41 has the first counting gear 41. The rotation of the rotation is transmitted as the set carry amount of the third counting wheel 42.

The number of teeth of each gear 44 and each of the carry gears 51 to 53 is set such that each of the counting wheels 40 to 42 described above makes one rotation of the counting wheel of the upper-stage girder of the next stage when each of the counting wheels 40 to 42 makes 10 revolutions. The rotation amount of the uppermost digit counting wheel 42 is set so as to rotate less than one rotation with respect to the maximum opening / closing movement amount of the carten 10.

Further, although the counting wheel 40 of the smallest lower digit continuously rotates, the counting wheels 41 and 42 of the next stage and above are intermittently rotated by the digit feeding rotation of the feed claw 46. Then, when the counting wheel 40 of the minimum lower digit makes one rotation based on the rotation of the drive pulley 13, the feed claw 46 of the counting wheel 40 raises and rotates the carry gears 52 and 53 of the next stage. However, by sequentially transmitting such a carry rotation, the counting wheels 40 to 42 are carried. As a result, the amount of rotation of the drive pulley 13 on the open side is counted by the counter wheels 40 to 42 of the counter 26.

The counting direction of the counter 26, that is, the digit feed direction of each of the counting wheels 40 to 42 is a direction that is added to the movement of the carten 10 toward the stop position side. In the case of the counter 26 in which the carten 10 is opened, the counter 26 is added in the movement of the carten 10 in the opening direction, that is, carried, and in the case of the counter 27 in which the carten 10 is closed, -Addition, that is, carry, by moving the ten-ten in the closing direction.

The counting wheels 40 to 42 and the carry gears 51 to 53 are set to the set count value set as the stop position of the opening of the cart 10 described above, for example, a value of “000”. It is equipped with a setting mechanism for setting several states.

That is, as also shown in FIG. 4, set levers 54 are continuously provided at the positions of the swing frames 47 facing the respective heart cams 45 of the counting wheels 40 to 42, and the set levers 54 are continuously provided. When the rocking frame 47 is rocked, the -54 ... Abut with the above-mentioned respective heart cams 45 ... And the abutment pressure rotates the heart cams 45 ... It is provided so as to always come into contact with the restriction positions 55 of 45.

In addition, at the above-mentioned restriction position 55, two contact portions or a straight line portion that comes into contact with the set lever 54 in a predetermined range are formed, and the set lever 54 comes into contact with this portion, so that -Tocam 45 is restricted to a fixed position.

Then, the rotation of the heart cam 45 to the fixed position counts the counting wheels 40 to 42 to the set count value set as the stop position (positioning), that is, the value of “000” in the above example. You can set the state.

Square boss portions 56 are continuously formed at the facing positions of the carry gears 51 to 53, and the swing frame 47 is swingably operated on the boss portions 56. At this time, leaf springs 57 ... Which are brought into contact with the plane portions of the boss portions 56 ... and bring the rotation positions of the respective carry gears 51-53 into a fixed posture are provided oppositely, and the base ends of the leaf springs 57 ... It is fixed to the support frame 35 described above.

That is, in the above-mentioned leaf springs 57 ... When the rocking operation of the rocking frame 47 is released, the tooth tips of the carry gears 51 to 53 and the gears 44 of the counting wheels 40 to 42 mutually reciprocate. The carry gears 51 to 53 are aligned so as to be engaged with each other without abutting against.

One end side of the swing shaft 50 of the swing frame 47 described above is extended to the outside through a long groove 58 formed in the support frame 35 to allow the swing shaft 50 to swing. The end portion is inserted into the guide groove 60 of the operation piece 59.

The above-mentioned operation piece 59 is supported by a guide member (not shown) which is appropriately provided on the above-mentioned support frame 35, and is slidably supported in the vertical direction. When is slid upward, the shaft end of the swing shaft 50 is rotated along the guide groove 60.

By this rotation, the rocking frame 47 is rocked and the counting wheels 40 to 42 are set to the set count value.

As shown in FIG. 5, a concave portion 63 is formed on the peripheral surface of the above-mentioned maximum upper digit counting wheel 42. When the counter 26 is set by the operating piece 59, the concave portion 63 is measured. It is formed at a position below the several wheels 42.

The above-mentioned concave portion 63 has a gentle inclined surface 64 on the upper side in the rotation direction of the counting wheel 42 and a vertical surface 65 on the lower side in the radial direction. A switch lever 66 is provided at the lower position of the counting wheel 42 so as to be opposed thereto, and a base end portion of the switch lever 66 is pivotally attached to a shaft 67 provided on the support frame 35.

A rotor 68 is pivotally supported by a pin 69 at an intermediate position of the switch lever 66 described above. The rotor 68 has a circumferential surface 70 having the pin 69 as an axial center and a circumferential surface 70. A protrusion 71 protruding more than 70 is formed, and the amount of protrusion of the above-mentioned protrusion 71 is set to be shorter than the depth of the concave portion 63 of the counting wheel 42.

The rotor 68 is biased by the spring 72 wound around the pin 69 so that the projection 71 thereof faces the direction of the vertical surface 65 of the recess 63, and the switch lever 68 is urged. The position is regulated by a stopper 73 provided in series with -66.

The projection 71 of the rotor 68 described above is in sliding contact with the peripheral surface of the normal counting wheel 42, and when the counting wheel 42 rotates in a set direction and faces the concave portion 63 of the counting wheel 42, It fits in the concave portion 63 and moves to the counting wheel 42 side.

Furthermore, when the counting wheel 42 is set to the set numerical value by the setting operation of the operation piece 59, the above-mentioned projection 71 fits into the concave portion 63 and moves to the counting wheel 42 side. , The position is set.

Further, when the above-mentioned projection 71 is in a fitted state with the concave portion 63 of the counting wheel 42, when the counting wheel 42 is further rotated in the set direction, the projection 71 becomes a shoulder portion of the vertical surface 65 of the concave portion 63. It is pushed by and rotates against the spring 72. With this rotation, the circumferential surface 70 of the rotor 68 slides on the circumferential surface of the counting wheel 42, and the movable position of the switch lever 66 does not change. , Retained.

In the operation of the rotor 68 described above, after the limit switch 74, which will be described later, is turned off by the concave portion 63 of the counting wheel 42, the counting wheel 42 further rotates and the concave portion 63 exceeds the position of the protrusion 71. Even so, the limit switch 74 acts so as not to be turned on.

On the lower surface side of the free end portion of the above-mentioned switch lever 66, the above-mentioned limit switch 74 is provided oppositely, and the push button 75 of this limit switch 74 moves the switch lever 66 to the counting wheel 42 side. Urge to.

When the projection 71 of the rotor 68 fits into the concave portion 63 of the counting wheel 42 and moves, the above-mentioned switch lever 66 turns off the limit switch 74 based on this movement, When the protrusion 71 is in sliding contact with the peripheral surface of the counting wheel 42, the limit switch 74 is turned on. Then, the limit switch 74 described above performs OFF, ON control of the drive of the forward / reverse rotation motor 18 on the side of the cart opening (for example, forward rotation drive).

On the upper surface side of the free end portion of the above-mentioned switch lever 66, a lever 76 is extended upward, and the lever 76 is a tongue piece continuous with the swing frame 47. When the swinging frame 47 swings based on the setting operation, the tongue 77 pushes the upper end of the lever 76 and pushes the switch lever 66, which pushes the limit switch 74. It is turned on. The operation of the limit switch 74 based on the pressing operation of the lever 76 is useful when the stop position of the counter 26 on the open side is set.

FIG. 6 shows a drive circuit for the forward / reverse rotation motor 18 and the aforementioned electromagnet 24. The forward / reverse rotation motor 18 and the coil 78 forming the electromagnet 24 are connected in parallel, and A direct-current power supply 80 is connected to each of the elements 18 and 78 by a forward / reverse changeover switch 79 so as to switch the polarity and to be energized. Furthermore, the forward rotation circuit side and the reverse rotation circuit side of the respective elements 18 and 78 are connected. Limit switches 74 and 81 operated by the counters 26 and 27 described above are provided in the respective switches, and the switches 74 and 81 are connected in parallel so that only one of the polarities during forward and reverse rotation is energized. -The terminals 82 and 83 are connected. Then, the above-mentioned changeover switch 79 is operated to turn off the power at the neutral position.

The operation of the opening / closing drive device for the cart thus constructed will be described. First, the opening / closing stop position of the carten 10 is set, and this setting is performed by the counters 26 and 27. For example, the case of setting a stop position for opening the cart 10 will be described.

First, by pulling up the operation piece 59, the counter 26 is set, and the projection 71 of the rotor 68 of the switch lever 66 becomes the recess 63 of the counting wheel 42 of the highest digit. Faced with each other, the set count value of the counter 26 is set. In a normal state, when the projection 71 of the rotor 68 fits into the concave portion 63 of the counting wheel 42, the limit switch 74 is turned off, but the swing lever 47 swings based on the setting operation. Is pressed and the limit switch 74 is turned on.

Next, when the forward / reverse changeover switch 79 is turned on in the direction in which the cart 10 is opened, for example, to the forward rotation side, the motor 18 is normally rotated, and at the same time the electromagnet 24 is also turned on. The internal gear 21 on the speed reducing mechanism 17 side is locked, and the output of the motor 42 drives the drive pulley 13 in the opening direction of the carten 10 via the speed reducing mechanisms 16 and 17.

Since the carten 10 is opened by the above-mentioned operation, when the carten 10 is opened to a desired position, for example, a fully open position, the operation piece 59 is pushed down and the counter 26 of the counter 26 is opened. Stop the set operation.

By this operation, the depression of the switch lever 66 is released, and since the projection 71 of the rotor 68 has already faced the concave portion 63 of the counting wheel 42, the switch lever 66 moves upward and the limit is reached. The switch 74 is turned off and the motor 18 is stopped.

Further, the electromagnet 24 is also turned off, the lock of the internal gear 21 is released, the car ten 10 is stopped at the set position, and the setting of the stop position on the open side of the car ten 10 is completed. To do. Further, the setting operation of the stop position on the closing side of the carten 10 can be performed by operating the counter 27 in the same manner as described above.

As described above, when the stop position for opening and closing the carten 10 is set, the subsequent use of the carten 10 can be performed by opening and closing the carten 10 by operating the forward / reverse changeover switch 79. Operation can be performed.

When the cart 10 for normal use is stopped, the counters 26 and 27 count the set count value, so that the projection 63 of the rotor 68 is fitted into the recess 63 of the counting wheel 42 of the highest digit. When fitted, the switch lever 66 moves upward, the limit switches 74 and 81 are OF-operated, the motor 18 is stopped, and the carten 10 is stopped in the open position or the closed position. ..

As described above, the mechanism for controlling the opening and closing of the curtain 10 can be housed in the unit of the drive pulley 13, the structure is simplified, and the mounting workability is also improved. Further, since the stop control of the motor 18 is performed based on the count values of the counters 26 and 27, the alignment can be easily performed, fine setting can be performed, and high accuracy can be obtained. Moreover, when the curtain 10 is manually opened and closed, the drive pulley 13 is rotated as the curtain 10 moves, and the counters 26 and 27 advance in the opening and closing directions. It is possible to open and close automatically by the motor 18.

[Brief description of drawings]

FIG. 1 is a configuration diagram of a carten opening / closing drive device.

FIG. 2 is a front view of a counter.

FIG. 3 is an exploded perspective view of a counter.

FIG. 4 is a cross-sectional view taken along line I-I in FIG.

5 is a sectional view taken along line II-II in FIG.

FIG. 6 is an electric circuit diagram.

[Explanation of symbols]

 10 ... Carten 13 ... Drive pulley 18 ... Forward / reverse motor 26, 27 ... Counter 40, 41, 42 ... Counting wheel 74, 81 ... Limit switch

Claims (1)

[Scope of utility model registration request] 1. A carten opening / closing drive device for opening and closing carters arranged on the left and right in opposite directions, wherein a drive pulley for opening and closing the carten is connected to a motor output. However, a counter for counting the rotation amount of the drive pulley corresponding to the movement amount of the cart is provided in the drive pulley, and when the count value of this counter reaches the set value, the motor is stopped. Carten open / close drive with a counter to control the switch.