JP5820837B2 - Shielding device - Google Patents

Description

  The present invention relates to a shielding apparatus used for picking work in an assembly factory, sorting goods in a distribution center, and the like.

  2. Description of the Related Art Conventionally, there are a wide variety of parts required for assembling products in a factory that performs assembly production, and these are stored in predetermined parts shelves according to type. In this state, each component is taken out and used at a predetermined timing (hereinafter, this operation is referred to as “picking operation”).

  With respect to the picking work, a shielding device (a picking work terminal) that shields the pick-out port of each part is used so that the parts are not picked out accidentally (see, for example, Patent Document 1). The shielding device includes a shielding member (shutter) and a lever switch operated by an operator. The shielding member is configured to be changeable between an open position and a closed position.

  The operator can perform a picking operation when the shielding member moves to the open position at a predetermined timing, and when the operation is completed, the operator operates the lever switch to transmit a message to that effect. In this way, the shielding device allows picking work by moving only the shielding member corresponding to the necessary part to the open position at an appropriate timing, so that other parts can be accidentally taken out. To prevent.

  Similarly, a shielding device is also used in an article sorting operation in a so-called distribution center (see, for example, Patent Document 2). In this case, the shielding device shields the article input section with a shielding member (opening / closing door) so that an article that should not be input is not erroneously input to the article input section for inputting the article.

JP 2012-56752 A JP 2008-189459 A

  In the conventional shielding device, when the shielding member is in a state where the shielding is released (opened state), the shielding member protrudes toward the operator side. For this reason, the work space of the operator is reduced, and there may be a case where trouble occurs in the work.

  The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a shielding device that is unlikely to obstruct an operator's work and can secure a large work space.

The shielding device according to the present invention is for solving the above-described problem, and is a sheet-shaped shielding member that covers the passage of an article, and a cylindrical winding shaft that winds the shielding member. And a drive unit that rotationally drives the winding shaft, and the shielding member is configured to be movable in a vertical direction by a winding operation or a drawing operation of the shielding member by the winding shaft, and is wound on the winding shaft. The state can be changed between a shielded released state and a shielded state drawn from the take-up shaft, the take- up shaft has a recess formed on the inner surface, and the drive unit rotationally drives the take-up shaft A first cylinder part for connecting the motor to the winding shaft, a first cylinder part formed with a protruding part protruding from the outer surface, and an outer diameter protruding from the first cylinder part A second cylindrical portion that is smaller than the outer diameter of the first cylindrical portion and protrudes from the outer surface A connecting member having a second cylindrical portion formed, and inserting the first cylindrical portion or the second cylindrical portion into the take-up shaft, thereby causing the protruding portion of the first cylindrical portion or the protruding portion of the second cylindrical portion to The recess of the winding shaft can be fitted to each other .

  According to such a configuration, since the shielding member can be switched between the shielding state and the shielding release state by moving the shielding member in the vertical direction, the shielding member protrudes toward the operator in any state. There is nothing. Therefore, it is difficult to disturb the operator's work, and a sufficiently large work space can be secured.

In this case, the shielding device includes a fixing member for fixing the driving unit to the attachment target, and the fixing member has a clamp-like connecting part that is attached to the reed of the attachment target. Also good. Moreover, according to the shielding apparatus which concerns on this invention, it is desirable to provide the control part which controls the said drive part, and this control part is provided with the operation member operated by the operator after a predetermined operation | work.

  According to this configuration, by operating the operation member, a signal indicating that the work is completed can be transmitted to the control unit. By transmitting this signal from the control unit to the outside, it is possible to manage that the work is being performed appropriately.

  Moreover, according to the shielding apparatus which concerns on this invention, it is desirable for the said drive part to be comprised integrally with a winding shaft, and for the said control part to be comprised with respect to a drive part.

  According to such a configuration, it is possible to arrange the control unit and the operation member at a position optimal for work according to the place where the shielding member is provided.

  According to the present invention, it is difficult to disturb the operator's work, and a large work space can be secured.

FIG. 1 is a front view showing an embodiment of a shielding apparatus according to the present invention. FIG. 2 is a plan view of the shielding device of FIG. FIG. 3 is a side view of the shielding device of FIG. FIG. 4 is a partial cross-sectional view showing a part of the shielding device. FIG. 5 is a partial cross-sectional view showing a part of the shielding device. FIG. 6 is a perspective view showing a part of the shielding device. FIG. 7 is a cross-sectional view of the shielding device. FIG. 8 is a block diagram showing an electrical configuration of the shielding device. FIG. 9 is a perspective view showing a part of the shielding device. FIG. 10 is a front view showing another example of the shielding device. 11 is a side view of the shielding device of FIG. FIG. 12 is a cross-sectional view illustrating another example of the shielding device.

  Hereinafter, an embodiment of a shielding device according to the present invention will be described with reference to the drawings.

  This shielding device is used, for example, when picking work is performed on an assembly line in an assembly factory, or when sorting goods is performed at a facility such as a distribution center. As another example, when a replenishment port for replenishing a part is provided in a storage shelf in which a part or the like is accommodated for picking, for example, a shielding device may be provided at the replenishment opening. In addition, the shielding device can be used in a facility such as an assembly factory disposed on the front side of a large component (article) that cannot be stored in a storage shelf.

  The shielding device is attached to a predetermined structure in a facility such as an assembly factory. For example, the shielding device is attached to a structure such as a storage shelf for storing components or a frame attached to a sorting facility. In the present embodiment, a state in which the shielding member 3 is attached to a structure 2 (hereinafter referred to as “attachment object”) 2 constituted by pipes will be described as an example. The attachment object 2 is configured by connecting a vertical rod 2a and a horizontal rod 2b.

  As shown in FIGS. 1 to 3, the shielding device 1 includes a sheet-shaped shielding member 3, a winding shaft 4 for winding up the shielding member 3, and a drive unit 5 for rotationally driving the winding shaft 4. A control unit 6 for controlling the drive unit 5 and a fixing member 7 for fixing the shielding device 1 to the attachment object 2 are provided.

  As shown in FIG. 1, the shielding member 3 is formed of a rectangular sheet member having a predetermined area. One end of the shielding member 3 is fixed to the winding shaft 4. A weight bar (weight) is provided at the other end of the shielding member 3. Thereby, the shielding member 3 is configured to be movable in the vertical direction by a winding operation or a drawing operation of the shielding member 3 by the winding shaft 4.

  The shielding member 3 performs predetermined shielding in a state where the shielding member 3 is sufficiently pulled out from the winding shaft 4. Hereinafter, this state is referred to as a “shielded state” (see FIG. 1). When the shielding member 3 is in the shielding state, an article or part used for a predetermined work is covered by the shielding member 3 and the passage thereof is blocked. The shielding member 3 may be configured by a transparent member or a net-like member. In this specification, “shielding” means that an operator is not allowed to take out or put in the shielding object by interposing between the worker or the article or part that is the shielding object. In the shielding state, it is not always necessary that all of the shielding object is covered and hidden so that it cannot be seen by the operator.

  Moreover, the shielding member 3 can cancel | release a shielding state in the state wound up by the winding shaft 4. FIG. Hereinafter, this state is referred to as a “shield release state”. This shielding release state includes not only the state where the shielding member 3 is completely wound on the winding shaft 4, but also the state where the shielding member 3 is wound halfway. For example, when the vertical length of the shielding member 3 is twice or more the vertical length of the shielding target article, and the article is shielded by the lower half of the shielding member 3 The article is exposed by being wound on the take-up shaft 4 by the length, and the shield is released. The shielding member 3 can be changed between a shielding state and a shielding release state by the control of the driving unit 5 by the control unit 6.

  As the winding shaft 4, for example, a resin-made hollow pipe is used. The take-up shaft 4 is configured to be rotatable around its axis when driven by the drive unit 5. On the outer surface of the winding shaft 4, a protruding portion 4 a that protrudes outward is formed (see FIG. 5). The protrusion 4 a is formed as a long protrusion along the longitudinal direction of the winding shaft 4. A predetermined fixture 8 (see FIG. 2) is attached to the protrusion 4a from above the shielding member 3 in a state where the shielding member 3 is overlapped. Thereby, the shielding member 3 is fixed to the winding shaft 4. Further, a recess 4b is formed on the inner surface of the winding shaft 4 at a position corresponding to the protrusion 4a (see FIG. 5). The recess 4 b is formed as a long recess along the longitudinal direction of the winding shaft 4.

  The drive unit 5 is configured integrally with the winding shaft 4. More specifically, the drive unit 5 is fixed to one end side of the winding shaft 4. As shown in FIGS. 4, 5, and 7, the drive unit 5 includes a motor 11 for rotationally driving the winding shaft 4, a holding member 12 that holds the motor 11, and the motor 11 that takes up the winding shaft. 4, a connecting member 13 for connecting to the connecting member 14, a bearing 14 for rotatably supporting the connecting member 13, a supporting member 15 for supporting the bearing 14, and a cover member 16 for covering the supporting member 15.

  The motor 11 is electrically connected to the control unit 6 via a predetermined connection wiring 17. The rotating shaft of the motor 11 is connected to the connecting member 13 via the connecting shaft 18. The connecting shaft 18 is provided with an encoder 21 for detecting the rotational speed of the motor 11. The encoder 21 includes an encoder disk 22 fixed to the connecting shaft 18 and a substrate 24 having a photo interrupter 23.

  As shown in FIGS. 5 and 6, the encoder disk 22 has a plurality of protrusions 22 a and a plurality of recesses 22 b on the peripheral edge thereof. The protrusions 22 a and the recesses 22 b are alternately provided along the circumferential direction of the encoder disk 22.

  The substrate 24 is fixed to the holding member 12 by a fixing member 25 such as a screw. The photo interrupter 23 provided on the substrate 24 is electrically connected to the control unit 6. The photo interrupter 23 includes, for example, a light emitting unit 23a made of an infrared LED and a light receiving unit 23b made of a photo IC. The light emitting unit 23a and the light receiving unit 23b are provided at a predetermined interval. Thus, a slit through which the peripheral edge of the encoder disk 22 passes is formed between the light emitting part 23a and the light receiving part 23b.

  The encoder 21 detects that the light emitted from the light emitting portion 23a is blocked by the protrusion 22a when the protrusion 22a of the encoder disk 22 passes through the slit. The encoder 21 can determine the number of rotations of the motor 11 by detecting the number of times of the interruption.

  As shown in FIG. 4, the holding member 12 is formed by bending a metal plate member into a predetermined shape. As illustrated in FIGS. 4 and 5, the holding member 12 includes a holding portion 31 that holds a part of the motor 11 and an attachment portion 32 that is attached to the fixing member 7.

  The holding part 31 has a hole 31 a that penetrates in the thickness direction of the holding member 12. The holding part 31 can hold the motor 11 by inserting a part of the motor 11 into the hole 31a.

  The holding member 12 is provided with a plurality of (two in the illustrated example) attachment portions 32. The attachment portion 32 is fixed to a part of the fixing member 7 with a screw, a bolt, or the like.

  The connecting member 13 is configured in a cylindrical shape so that the motor 11 can be housed therein. More specifically, the connecting member 13 includes a first tube portion 35 to which the connecting shaft 18 is connected, a second tube portion 36, and a third tube portion 37 that engages with the bearing 14.

  The 1st cylinder part 35 has the wall part 38 formed along the radial direction inside the middle part. A through hole 39 is formed at the center of the wall portion 38. One end of the connecting shaft 18 is inserted into the through hole 39. Thereby, when the connecting shaft 18 is rotated by the rotation of the rotating shaft of the motor 11, the rotational force of the connecting shaft 18 is transmitted to the connecting member 13.

  A plurality of projecting portions 35 a projecting outward in the radial direction are formed on the outer surface of the first cylindrical portion 35. The protrusions 35 a are formed at intervals along the circumferential direction of the outer surface of the first tube portion 35. The protruding portion 35 a is formed as a long protrusion along the longitudinal direction (cylinder center direction) of the first tube portion 35. As shown in FIG. 5, the protrusion 35 a is fitted in a recess 4 b formed on the inner surface of the winding shaft 4. Thereby, the connecting member 13 can rotate integrally with the winding shaft 4.

  Thus, the 1st cylinder part 35 can be connected with this winding shaft 4 only by making it fit in the recessed part 4b of the winding shaft 4. FIG. Therefore, the drive unit 5 can be easily attached to and detached from the take-up shaft 4, and the structure has good maintainability. Moreover, since the drive part 5 can be easily attached to the winding shaft 4 from which length differs, it becomes possible to adapt easily to the various magnitude | sizes of the articles | goods (parts) used as a work object.

  The second cylinder part 36 is formed so as to protrude from the wall part of the first cylinder part 35. The outer diameter of the second cylinder part 36 is smaller than the outer diameter of the first cylinder part 35. Thereby, another winding shaft 4 having an inner diameter smaller than that of the winding shaft 4 attached to the first cylinder portion 35 can be attached to the second cylinder portion 36. On the outer surface of the second cylindrical portion 36, a plurality of protruding portions 36 a that protrude outward in the radial direction are formed in the same manner as the first cylindrical portion 35.

  As described above, the connecting member 13 includes the two cylindrical portions of the first cylindrical portion 35 and the second cylindrical portion 36 so that the winding shaft 4 having different outer diameters can be attached. Thereby, the shielding apparatus 1 can use properly the winding shaft 4 which differs in size according to the environment to be used. In the present embodiment, for example, the winding shaft 4 having an outer diameter of 43 mm may be attached to the first cylinder portion 35, and the winding shaft 4 having an outer diameter of 28 mm may be attached to the second cylinder portion 36.

  The third cylinder part 37 has an inner diameter and an outer diameter larger than those of the first cylinder part 35. The third cylindrical portion 37 is formed with a concave portion 37a into which the bearing 14 is fitted.

  For example, a ball bearing can be used as the bearing 14. The inner ring of the bearing 14 is in contact with the support member 15. The outer ring of the bearing 14 is fitted in the concave portion 37 a of the third cylindrical portion 37 in the connecting member 13. As a result, the connecting member 13 is configured to be rotatable around its cylindrical center.

  As shown in FIGS. 4 and 5, the support member 15 includes a support portion 41 that supports the bearing 14. The support portion 41 includes a cylindrical portion 41 a that is inserted into the inner ring of the bearing 14, and a locking claw 41 b for the cylindrical portion 41 a to protrude and lock the side portion of the bearing 14. The support portion 41 supports the bearing 14 by inserting the cylindrical portion 41 a into the inner ring of the bearing 14 and the locking claw 41 b contacting the bearing 14.

  The cover member 16 covers the support member 15 that supports the bearing 14 and is fixed to the fixing member 7.

  The motor 11 is electrically connected to the control unit 6 via the connection wiring 17. The connection wiring 17 is connected to a connection portion (connector) 42 provided on the fixing member 7. The connection part 42 includes a first connection part 42a to which the connection wiring 17 of the motor 11 is connected, and a second connection part 42b connected to the first connection part 42a. The first connection part 42 a is provided inside the cover member 16. The second connection part 42 b is exposed from the lower part of the cover member 16.

  The connecting member 13, the bearing 14, the support member 15, and the cover member 16 in the driving unit 5 are provided not only on one end side of the winding shaft 4 but also on the other end side. Thereby, the winding shaft 4 is rotatably supported by these members at both ends thereof. In the present embodiment, the motor 11 is not provided on the other end side of the winding shaft 4.

  As shown in FIGS. 1 to 3, the control unit 6 is fixed to the fixing member 7 via a predetermined fixture 44. Thereby, the control unit 6 is configured integrally with the drive unit 5. Further, the control unit 6 can be separated from the driving unit 5 and the fixing member 7 without using the fixing tool 44, and can be fixed to the attachment object 2 at a position away from these (see FIGS. 10 and 11). In this case, as shown in FIG. 11, it can be detachably fixed to, for example, the vertical rod 2a of the attachment object 2 via a separate fixture 45.

  The control unit 6 includes a control board (not shown), a control box 46 for storing the control board, a lever switch (operation member) 47 operated by an operator, and a display lamp 48 for displaying a predetermined state. And a push button switch (operation member) 49.

  The control board has a microcomputer 51 for performing various controls (see FIG. 7). The microcomputer 51 transmits a drive signal to the motor 11 via the motor driver 52 as shown in FIG.

  As shown in FIG. 8, the microcomputer 51 is configured to receive a signal to that effect through the hall element 53 and the amplifier 54 when the lever switch 47 is operated. Further, the microcomputer 51 transmits a predetermined control signal to the display lamp 48 of the push button switch 49 via the drive element 55. Further, when the push button switch 49 is operated, the microcomputer 51 can receive a signal to that effect through the photo interrupter 56.

  Further, as shown in FIG. 8, the microcomputer 51 can perform various settings through a setting switch 57 provided in the control box 46. Further, the microcomputer 51 can transmit a signal to the outside of the control unit 6 through the open collector 58. Further, the microcomputer 51 can receive an external signal through the photocoupler 59.

  The control box 46 is hollow and has a substantially rectangular parallelepiped shape. On the front side of the control box 46, a setting switch 57 (see FIG. 8) is provided. The setting switch 57 is covered with an openable / closable lid 61 provided in the control box 46, except when setting is performed.

  The lever switch 47 is provided so as to protrude downward from the lower portion of the control box 46. The lever switch 47 is electrically connected to the microcomputer 51 of the control board via the hall element 53 and the amplifier 54. The lever switch 47 is operated, for example, after the shielding member 3 is in the shielding release state and the worker performs a predetermined work. By this operation, the microcomputer 51 can detect that the predetermined work is completed by the signal received from the lever switch 47.

  Similar to the lever switch 47, the push button switch 49 can be operated when a predetermined operation is completed.

  As shown in FIG. 3, the connection wiring 63 is exposed from the back side of the control box 46. A second connection portion 42 b is provided at the end of the connection wiring 63. As shown in FIG. 9, the second connection part 42b is connected to the first connection part 42a.

  The control unit 6 and the drive unit 5 are controlled and driven by a power supply circuit 65 and a power supply 66 (see FIG. 8).

  The fixing member 7 includes a first fixing portion 7 a that is fixed to the attachment object 2 and a second fixing portion 7 b to which the support member 15 of the driving unit 5 is fixed. 1-5, the 1st fixing | fixed part 7a is comprised by plate shape, and is provided in two places of the one end part side and the other end part side of the winding shaft 4. As shown in FIG. The first fixing portion 7 a is provided so as to be substantially parallel to the longitudinal direction of the winding shaft 4. The first fixing portion 7 a has a connecting portion 67 that is connected to the reed 2 b of the attachment object 2. The connecting portion 67 is configured in a clamp shape.

  The 2nd fixing | fixed part 7b is comprised by plate shape, and is provided so that it may orthogonally cross to the 1st fixing | fixed part 7a. That is, the second fixing portion 7 b is provided along the radial direction of the winding shaft 4. The support member 15 of the drive unit 5 is fixed inside the second fixing portion 7b. The cover member 16 of the drive unit 5 is fixed to the outside of the second fixed portion 7b. In addition, an attachment portion 32 of the holding member 12 in the drive portion 5 is attached to the second fixing portion 7b.

  Hereinafter, the operation of the shielding device 1 according to the present invention will be described.

  The shielding device 1 is used in a state of being attached to the attachment object 2. The shielding device 1 can operate in response to a signal from a management device provided separately. When receiving this signal, the shielding device 1 controls the driving unit 5 by the control of the control unit 6, and the state of the shielding member 3 (shielding state, shielding cancellation) by the rotation of the winding shaft 4 driven by the driving unit 5. State). The shielding device 1 changes the shielding member 3 in the shielding state to the shielding release state at a timing at which a predetermined operation should be performed. Thereby, the operator can confirm the article covered with the shielding member 3. When the shielding member 3 is in the shielding release state, the operator takes out the article and performs the work.

  When the work is completed, the worker operates the lever switch 47 or the push button switch 49. The microcomputer 51 of the control unit 6 receives the signal generated by this operation and detects that the work is completed. The microcomputer 51 transmits a signal to that effect to the external management device and changes the shielding member 3 to the shielding state again.

  In order to notify that the signal from the control unit 6 has been received, the management apparatus can transmit a predetermined signal toward the control unit 6. The control unit 6 can receive a signal from the management device and turn on / flash the display lamp 48 of the push button switch 49 according to a predetermined setting by the setting switch 57. Thereby, the operator can confirm the response from the management apparatus visually.

  According to the shielding device 1 according to the present invention described above, since the shielding member 3 can be switched between the shielding state and the shielding release state by moving the shielding member 3 in the vertical direction, the shielding member in any state. 3 does not protrude toward the operator. Therefore, it is difficult to disturb the operator's work, and a sufficiently large work space can be secured.

  Further, by operating an operation member such as the lever switch 47 or the push button switch 49, a signal indicating that the work is completed can be transmitted to the control unit 6. By transmitting this signal from the control unit 6 to the outside, it is possible to manage that the work is being performed appropriately.

  Further, since the drive unit 5 is configured integrally with the winding shaft 4 and the control unit 6 is configured to be separated from the drive unit 5, the operation can be performed depending on the place where the shielding member 3 is provided. It becomes possible to arrange the control unit 6 and the operation members (lever switch 47, pushbutton switch 49) at the optimum positions.

  In addition, the shielding apparatus which concerns on this invention is not limited to the structure of the said embodiment. Further, the shielding device according to the present invention is not limited to the above-described effects. Various modifications can be made to the shielding device according to the present invention without departing from the gist of the present invention.

  For example, in the above-described embodiment, an example in which a so-called cutoff type is used as the encoder 21 has been described. However, the present invention is not limited to this, and a so-called reflection type may be used.

  In the above embodiment, the example in which the drive unit 5 (motor 11) is attached to the end of the winding shaft 4 has been described, but the present invention is not limited to this. For example, the motor 11 may be provided in the control box 46 of the control unit 6 to drive the winding shaft 4.

  In the above embodiment, an example in which the drive unit 5 is provided on one end side of the winding shaft 4 has been described, but the present invention is not limited to this. For example, as shown in FIG. 12, drive units 5 may be provided at both ends of the winding shaft 4. Thereby, it becomes possible to improve the driving force in winding up the shielding member 3.

  In said embodiment, the connection member 13 in the drive part 5 has an example which has two cylinder parts, the 1st cylinder part 35 and the 3rd cylinder part 36 for connecting two types of winding shafts 4 from which a diameter differs. Although shown, it is not limited to this. For example, the connecting member 13 may have one cylindrical part, and may have three or more cylindrical parts.

  In the above embodiment, the shielding member 3 is configured as a single sheet, but is not limited thereto. The shielding member 3 may be divided into a plurality and provided on the winding shaft 4.

  For example, a magnet may be provided at the lower end of the shielding member 3 and a sensor for sensing magnetic force may be incorporated in the control unit 6. Thereby, when the shielding member 3 is changed from the shielding state to the shielding release state, the control unit 6 stops the driving unit 5 when the sensor detects the magnetic force of the magnet, and the shielding member by the winding shaft 4 3 can be stopped.

  DESCRIPTION OF SYMBOLS 1 ... Shielding device, 2 ... Installation object, 2a ... Vertical hook, 2b ... Horizontal hook, 3 ... Shielding member, 4 ... Winding shaft, 4a ... Projection part, 4b ... Recessed part, 5 ... Drive part, 6 ... Control part , 7 ... fixing member, 7a ... first fixing part, 7b ... second fixing part, 8 ... fixing tool, 11 ... motor, 12 ... holding member, 13 ... connecting member, 14 ... bearing, 15 ... support member, 16 ... Cover member, 17 ... connection wiring, 18 ... connection shaft, 21 ... encoder, 22 ... encoder disk, 22a ... projection, 22b ... concave, 23 ... photo interrupter, 23a ... light emitting part, 23b ... light receiving part, 25 ... fixing member 31 ... Holding part, 31a ... Hole, 32 ... Mounting part, 35 ... First cylinder part, 35a ... Projection part, 36 ... Second cylinder part, 36a ... Projection part, 37 ... Third cylinder part, 37a ... Concave part, 38 ... wall part, 39 ... through hole, 41 ... support part, 41a ... cylinder part, 41 ... Claw 42, ... Connection part, 42a ... First connection part, 42b ... Second connection part, 44 ... Fixing tool, 45 ... Fixing tool, 46 ... Control box, 47 ... Lever switch, 48 ... Indicator lamp, 49 ... Pushbutton switch, 51 ... Microcomputer, 52 ... Motor driver, 53 ... Hall element, 54 ... Amplifier, 55 ... Drive element, 56 ... Photo interrupter, 57 ... Setting switch, 58 ... Open collector, 59 ... Photo coupler, 61 ... Cover part 63 ... Connection wiring 65 ... Power supply circuit 66 ... Power supply 67 ... Connection part

Claims (4)

A sheet-like shielding member for covering the passage of the article, a cylindrical winding shaft for winding the shielding member, and
A drive unit that rotationally drives the winding shaft;
The shielding member is configured to be movable in the vertical direction by the winding operation or the drawing operation of the shielding member by the winding shaft, and the shielding release state wound by the winding shaft and the shielding state pulled from the winding shaft. And can be changed state,
The winding shaft has a recess formed on the inner surface,
The drive unit
A motor for rotationally driving the winding shaft;
A first cylinder part for connecting the motor to the take-up shaft, the first cylinder part having a protrusion protruding from the outer surface, and the first cylinder part protruding from the first cylinder part and having an outer diameter A second cylindrical portion smaller than the outer diameter of the first cylindrical portion, and a connecting member having a second cylindrical portion formed with a protruding portion protruding from the outer surface,
By inserting the first tube portion or the second tube portion into the winding shaft, the protruding portion of the first tube portion or the protruding portion of the second tube portion and the recessed portion of the winding shaft can be fitted to each other. Characteristic shielding device. A fixing member for fixing the drive unit to an attachment object;
The fixing member has a clamp-like connecting portion that is attached to the reed of the attachment object.
The shielding apparatus according to claim 1. A control unit for controlling the drive unit, the control unit, the shielding device according to claim 1 or 2 comprising an operating member operated by an operator after a predetermined work. The shielding device according to claim 3 , wherein the drive unit is configured integrally with a winding shaft, and the control unit is configured to be separated from the drive unit.

Images