JP2012056752A - Terminal for picking work - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a terminal for picking work including a lever switch which has durability and can be used over a long term even when it is used for picking work in which it is frequently operated.SOLUTION: The terminal for picking work includes an instruction means for instructing a worker of timing of picking, and the lever switch 200 used to confirm completion of picking. The lever switch 200 includes: a lever body 210; a non-contact type switching element 250 which can switch between an on-state and an off-state by operation of the lever body 210, and a support means 260 supporting the lever body 210 at a standby position while holding a part of the lever body 210 and supporting the lever body 210 to permit the operation of the lever body 210 for switching the switching element 250 to the on-state or the off-state.

Description

  The present invention relates to a picking work terminal comprising instruction means for instructing the timing of picking (part removal) to an operator, and a lever switch used for confirming completion of picking.

  2. Description of the Related Art Conventionally, in a factory where assembly production is performed, parts necessary for assembling each product are picked (taken out) from a parts shelf containing each part and delivered to an assembly line for each product. When assembling and manufacturing a wide variety of products, the parts picked from the parts shelf are different for each product, and the operator must pick the parts determined for each product from the parts shelf.

  In order to support such a picking operation, in many factories, a picking device is provided that includes a display at each pick-up position of the parts shelf and controls lighting of each display (see Patent Document 1). ). This picking device lights up and displays a part that needs to be picked for each assembly product, notifies an operator, and instructs the timing. In the picking device, a lever switch is provided for each display. The lever switch is a switch that is operated to confirm the completion of picking when the picking of the component corresponding to the lit display is completed. When there is a response for confirmation of completion of picking from all the lever switches corresponding to the lit display unit (operated), the picking device recognizes that all the parts have been picked and notifies the operator of that fact. At the same time, it moves to the picking work for the next product to be assembled.

  The lever switch used here includes, for example, a simple contact switch as disclosed in Patent Document 2. This simple contact switch includes an operation lever, a rod-shaped electrode connected to the tip of the operation lever and having a hook-shaped portion in the middle, a cylindrical cylindrical inner surface electrode insulated from the electrode, A cylindrical bottom electrode provided at the bottom of the cylindrical inner surface electrode. In the simple contact switch, the operation lever is tilted in the circumferential direction, whereby the electrode is inclined in the cylindrical inner surface electrode, and is brought into conduction when the saddle-shaped portion of the electrode comes into contact with the cylindrical inner surface electrode. Further, when the operating lever is moved in the axial direction, the electrode is pulled out in the direction of the cylindrical core of the cylindrical inner surface electrode, and is brought into conduction when the flanged portion of the electrode comes into contact with the cylindrical bottom electrode. As described above, the simple contact switch includes a contact type switching element.

JP 2006-206316 A JP 2006-294574 A

  As described above, since the lever switch used in the picking device is operated every time confirmation of completion of picking is completed, it is frequently operated. Since the lever switch listed in Patent Document 2 is switched by a contact type switching element, the durability is not high due to contact failure or wear of the contact portion. Therefore, the lever switch used for such an application has been required to have high durability that can be used for a longer period of time.

  In view of such circumstances, the present invention provides a picking work terminal including a lever switch having durability that can be used for a long period of time even when used for picking work that is frequently performed. And

  The picking work terminal according to the present invention includes instruction means for instructing the worker of picking timing, and a lever switch used for confirming completion of the picking, the lever switch including a lever body, A non-contact type switching element capable of switching between an on state and an off state by the operation of the lever body, and supporting the switching element to an on state or an off state while supporting a part of the lever body at a standby position. And a supporting means for acceptably supporting the operation of the lever main body.

  According to this configuration, the lever switch is switched between the on state and the off state by the operation of the lever body supported by the support means at the standby position while a part of the lever body is sandwiched. Thus, even if it is used for picking work in which the lever switch is operated every time picking is completed, this picking work terminal can be used over a long period of time because it switches between on and off without contact. Durability can be provided.

  According to the present invention, the switching element includes a magnet provided at one end of the lever main body, and a magnetic sensor capable of detecting a change in a magnetic field caused by displacing the position of the one end of the lever main body. The means contacts the first support portion with the first support portion that supports the lever body so that the magnetic sensor is located at a position facing the magnet while the lever body is supported at the standby position. A second support part that biases and supports the lever main body toward the first support part so as to be positioned in a possible state, and a part of the lever main body by the first support part and the second support part It is preferable that the support is sandwiched between.

  According to such a configuration, the switching element can be switched between the on state and the off state in a non-contact manner according to the positional relationship between the magnet provided at one end of the lever body and the magnetic sensor provided at the first support portion. Is done. Therefore, even if it uses for the picking operation | work which operates a lever switch whenever picking is completed, it has the durability which can be used for a long period of time.

  According to the present invention, it is preferable that the second support portion is constituted by an elastic body.

  According to this configuration, the lever main body can change the positional relationship between the magnet provided in a part of the lever main body and the magnetic sensor provided in the first support portion while resisting the elastic force of the elastic body. it can. Therefore, the picking work terminal can provide a degree of freedom in the operation of the lever body.

  According to the present invention, the first support part includes a protruding part that protrudes in an annular shape, and a part of the lever main body is provided with a flange that can be contacted over the entire circumference of the annular protruding part. It is preferable that

  According to this configuration, the lever switch is turned on and off by the operation of the lever body supported by the support means at the standby position with the disc part sandwiched between the projection part and the second support part (or elastic body). Switch. According to the operation of the lever body, the first support part can make the disk part of the lever body come into contact with the annular protrusion, and corresponds to the movement of the lever body in the entire axial direction. can do. Therefore, even if it uses for the picking operation | work which operates a lever switch every time picking is completed, the durability which can be used for a long period of time is provided.

  As described above, the picking work terminal according to the present invention has an excellent effect of having durability that can be used for a long period of time, even when used for picking work that is frequently performed.

The front external view of the terminal for picking work concerning one embodiment is shown. The side external view of the picking work terminal according to the embodiment is shown. Sectional drawing of the lever switch (when a lever main body exists in a standby position) of the terminal for picking work concerning the embodiment is shown. Sectional drawing of the lever switch (when the lever main body is in the state of tilting operation) of the picking work terminal according to the embodiment is shown. Sectional drawing of the lever switch (when the lever main body exists in the state by which the tension | pulling main body was pulled) of the terminal for picking work concerning the embodiment is shown.

  A picking work terminal according to an embodiment of the present invention will be described with reference to the drawings. First, a picking device (not shown) for controlling the picking work terminal according to the embodiment will be briefly described. The picking device is a picking device main body (not shown) that manages the parts required for assembling the product to be assembled and the position where the parts are stored, and the corresponding parts provided for each part are the targets of picking. A picking work terminal (not numbering) for notifying the worker of whether or not.

  The picking apparatus main body is connected to each picking work terminal, and one part is associated with each picking work terminal and the position of the part is specified. The picking work terminal includes an instruction means 100 (see FIGS. 1 and 2) for instructing picking timing when the corresponding part is a picking target, and a lever switch 200 for confirming completion of picking the corresponding part. (See FIG. 1 and FIG. 2).

  The operation of the picking apparatus configured as described above will be described. First, the picking apparatus main body transmits a signal to the picking work terminal corresponding to the part to be picked. Each picking work terminal that has received the signal notifies the worker of the parts to be picked. In this way, the picking device informs the operator of one or more types of parts necessary for assembling one product and the position of the parts, and instructs the timing.

  When the worker finishes picking the part, the operator operates the lever switch 200 of the picking work terminal corresponding to the part. The picking apparatus main body recognizes that all parts have been picked by receiving a response of confirmation of completion of picking from all the picking work terminals corresponding to the parts that were picked. When a part is picked, the picking device body is configured to move to a part picking operation for assembling the next product.

  Next, the structure of the picking work terminal according to the embodiment will be described with reference to the drawings. The picking work terminal is attached to a parts shelf in which parts of a product to be assembled and manufactured are stored. This parts shelf is, for example, a pipe rack assembled with pipes. One picking work terminal is assigned to each part (or a set of parts group), and a plurality of picking terminals are arranged on the parts shelf so as to correspond to each part. The picking work terminal according to the present embodiment is provided in a pipe rack that is partitioned by a pipe and a plate material for each part, and is attached to a pipe at the upper end on the front side that partitions the corresponding part. That is, the picking work terminal is disposed above the corresponding component.

  As shown in FIGS. 1 and 2, the picking work terminal according to the embodiment includes an instruction unit 100 for instructing the worker of picking timing, and a lever switch 200 used for confirming the completion of picking. A terminal main body 300 to which the instruction unit 100 and the lever switch 200 are attached.

  The instructing unit 100 includes an informing unit 110 for visually informing the worker of the picking timing and picking timing, and a picking restricting unit 120 for restricting picking of a corresponding part to the worker. Note that the instruction unit 100 may include only one of the notification unit 110 and the picking restriction unit 120.

  The notification unit 110 according to the present embodiment is a lamp 110 having a built-in LED, a light bulb, and the like (hereinafter, the same reference numerals as those of the notification unit are given and described). The lamp 110 is provided on the front side of the terminal main body 300 (the front side in FIG. 1 and the left side in FIG. 2), and is disposed at a position that is easily visible to an operator standing in front of the terminal main body 300. The lamp 110 is connected to a control board built in the terminal body 300, and is configured to be lit and displayed by the control board. The lamp 110 is not limited to the one that is lit and displayed, and may be any notification means that appeals to the operator's vision, such as blinking display. The lamp 110 according to the present embodiment is configured to be turned on by a signal from the control board of the terminal body 300 and turned off by the operation of the lever switch 200.

  The picking restriction means 120 according to the present embodiment is provided at a position that hinders the worker from picking a corresponding part, and operates only when the part needs to be picked to allow the part to be picked. The shutter 120 (which will be described below with the same reference numerals as the picking restriction means). The shutter 120 includes a pair of long arms 121 and 121 having a shape in which a midway portion is bent, and a plate-like shutter main body 122 provided on the pair of arms 121 and 121.

  The pair of arms 121 and 121 are provided at one end on both side surfaces of the terminal main body 300, respectively. The pair of arms 121 and 121 are configured to be rotatable about shafts 123 and 123 protruding at right angles to the longitudinal direction. The shutter main body 122 has an area that can cover a range through which a worker can pass when picking, in order to prevent the worker from picking a corresponding part.

  The pair of arms 121 and 121 are attached in parallel to the shutter main body 122, and rotate in synchronization with each other. The range of rotation of the pair of arms 121 and 121 is from a closed position (the position of the shutter 120 indicated by a solid line in FIG. 2) in which the other end side of the arms 121 and 121 faces downward and the surface of the shutter body 122 faces in the front-rear direction. Up to the open position (the position of the shutter 120 indicated by a two-dot chain line in FIG. 2) where the other ends of the arms 121, 121 face forward (left side when viewed from the front of FIG. 2) and the surface of the shutter body 122 faces vertically. It is.

  The shutter 120 directs the surface of the shutter main body 122 in the front-rear direction to a closed position that prevents the operator from picking the component, thereby instructing that the corresponding component is not a target for picking and restricting the picking. The shutter 120 directs the corresponding part to be picked by instructing the corresponding part to be picked by directing the surface of the shutter main body 122 in the vertical direction so as to avoid an open position that does not hinder the picking of the part by the operator. Is acceptable.

  The lever switch 200 will be described with reference to FIGS. 3 to 5 are cross-sectional views of the lever switch 200. FIG. FIG. 3 shows a state where the lever switch 200 is in the standby position. FIG. 4 shows a state in which the lever switch 200 is tilted. FIG. 5 shows a state in which the lever switch 200 is pulled.

  The lever switch 200 is supported at a standby position with a lever body 210, a non-contact type switching element 250 that can be switched between an on state and an off state by the operation of the lever body 210, and a part of the lever body 210 interposed therebetween. And support means 260 that supports the operation of the lever main body 210 for switching the switching element 250 to the on state or the off state. Here, the “standby position” is a position in which the operation of the lever main body 210 is not applied to the support means 260 that supports the lever main body 210 with a part thereof sandwiched therebetween.

  The lever main body 210 is a rod-like member having a length in one direction. The lever main body 210 is configured by connecting three members, and includes a first lever member 220 provided on one end side, a second lever member 230 provided on a midway portion, and a third lever provided on the other end side. Lever member 240. One end of the lever body 210 is a fixed end supported by the support means 260, and the other end is a free end.

  The first lever member 220 includes a cylindrical shaft portion 221, a mounting groove 222 in which the switching element 250 can be mounted, a disc portion 223 that protrudes like a bowl over the entire circumference on the tip side of the shaft portion 221, The truncated cone-shaped guide part 224 provided from the front end side of the shaft part 221 provided with the disk part 223 toward the front end, and the other end side of the shaft part 221 can be fitted into the end part of the second lever member 230. A fitting section 225.

  The shaft portion 221 includes a mounting groove 222 at one end and a fitting portion 225 at the other end. The shaft portion 221 has a smaller diameter than the outer peripheral diameter of the disc portion 223.

  The mounting groove 222 is provided at the tip of the shaft portion 221. More preferably, the mounting groove 222 is provided in the central portion of the shaft portion 221.

  The disc portion 223 has a predetermined thickness and has a structure that does not easily deform with respect to a load from the center direction. The disk portion 223 has a flat surface on at least the distal end side of the shaft portion 221. In the present embodiment, both surfaces are flat.

  The guide portion 224 is formed such that the bottom surface (surface having a large diameter) is on the disk portion 223 side and the top surface (surface having a small diameter) is on one end side of the first lever member 220. The center of the guide part 224 is arranged so as to coincide with or substantially coincide with the center of the disc part 223. A mounting groove 222 is provided at the center of the upper surface of the guide portion 224.

  The fitting part 225 includes a truncated cone-shaped top part 225 a and a fitting groove part 225 b extending over the entire circumference of the shaft part 221. The diameter of the top portion 225a is equal to or smaller than the inner diameter of the cylindrical second lever member 230. The fitting portion 225 is configured such that the fitting groove portion 225 b can be fitted into the opening portions at both ends where the diameter is reduced from the inner diameter of the second lever member 230. The fitting portion 225 is configured such that the top portion 225 a is hooked on the opening of the second lever member 230 and can be prevented from coming off from the second lever member 230.

  The second lever member 230 has a buffer portion 231 that absorbs and cushions a load when the third lever member 240 is operated, and a fitting that can fit the end portion of the first lever member 220 or the third lever member 240. And mouths 232 and 232. The second lever member 230 is made of an elastically deformable material, for example, rubber. Therefore, the second lever member 230 can reduce the transmission of the stress related to the second lever member 230 itself or the third lever member 240 to the first lever member 220 when the lever main body 210 operates.

  The buffer part 231 is formed in a cylindrical shape. The fitting ports 232 and 232 have a smaller diameter than the inner diameter of the buffer portion 231. Therefore, when the fitting ports 232 and 232 are fitted into the fitting portions 225 of the first lever member 220, the inner peripheral surfaces of the fitting ports 232 and 232 are fitted into the fitting groove portions 225b, and the buffer portions 231 The top portion 225a is hooked inside to be prevented from coming off.

  The third lever member 240 is a rod-shaped operation part 241 that is a part operated by an operator, and a fitting that is fitted into the fitting part 232 of the second lever member 230 at one end side of the operation part 241. Unit 242.

  The operation unit 241 is pushed by the operator from the side perpendicular to the axis and rotated about the tip side of the first lever member 220 as a fulcrum (tilting operation), or grips the operation unit 241 itself and moves in the axial direction. For moving toward the other end side (lower side in FIG. 3) (pulling operation). The length of the operation unit 241 in the longitudinal direction is appropriately determined according to the operation.

  The operation unit 241 includes operation assisting means 243 so that the operator can operate from a remote location. The operation assisting means 243 according to the present embodiment is described with a through hole 243 (hereinafter referred to as the operation assisting means 243) provided in the other end side of the operation portion 241 (the free end side of the lever main body 210). ). The through hole 243 is used for remotely operating the operation unit 241 by attaching one end of a long string and pulling the other end of the string. This is effective when the lever switch 200 cannot be directly operated or the operability is poor because, for example, the picking work terminal is installed at a high place with respect to the worker.

  The fitting part 242 has the same configuration as the fitting part 225 of the first lever member 220 and can be fitted into the fitting port 232 of the second lever member 230 so as to be prevented from coming off.

  The switching element 250 controls a magnet 251 provided at one end of the lever body 210, a magnetic sensor 252 that can detect a change in magnetic field caused by displacing the position of one end of the lever body 210, and the magnetic sensor 252. And a control board 253.

  Switching element 250 is configured to be switchable between an on state and an off state depending on the positional relationship between magnet 251 and magnetic sensor 252. The magnet 251 and the magnetic sensor 252 are in a positional relationship facing each other in a state where the lever main body 210 is located at the standby position. Specifically, the magnet 251 is mounted in the mounting groove 222. The magnetic sensor 252 is provided for detecting the magnetic field of the magnet 251 and is, for example, a Hall element. The control board 253 is connected to the magnetic sensor 252 and the terminal body 300, and is configured to output a signal generated when the magnetic sensor 252 detects the magnetic field of the magnet 251 to the terminal body 300.

  The support means 260 includes a first support portion 270 that supports the lever body 210 so that the magnetic sensor 252 is positioned at a position facing the magnet 251 in a state where the lever body 210 is supported at the standby position, and one end of the lever body 210. A second support portion 280 that biases and supports the lever main body 210 toward the first support portion 270 so that the portion side is positioned so as to be in contact with the first support portion 270.

  The first support portion 270 includes a substrate 271 for attaching to the terminal body 300 and a covering portion 272 that is connected to the substrate 271 and covers one end portion side of the first lever member 220.

  The substrate 271 includes a magnetic sensor 252 and a control substrate 253. The substrate 271 includes a substrate body 273 to be attached to the terminal body 300 and a protrusion 274 that protrudes annularly from the substrate body 273. The protrusion part 274 is formed so that contact is possible over the perimeter of the disc part 223. FIG. The positional relationship in which the magnet 251 provided at the distal end portion of the first lever member 220 and the magnetic sensor 252 provided at the first support portion 270 face each other when the protruding portion 274 contacts the entire circumference of the disc portion 223. It comes to be. The protrusion 274 can make the disk portion 223 contact the annular protrusion 274 in accordance with the operation of the lever main body 210, and corresponds to the operation of the lever main body 210 in the entire axial direction. be able to.

  The protrusion 274 has a circular cross-sectional shape in the circumferential direction. When the protrusion 274 contacts the entire circumference of the disk portion 223, the protrusion 274 makes a line contact in an annular shape. Even when the protruding portion 274 is brought into contact with the disc portion 223 from a separated state, the inclined surface of the guide portion 224 serves as a guide, the positional relationship with the disc portion 223 is corrected, and the entire disc portion 223 is corrected. Contact over the circumference. The position of the lever main body 210 when the protruding portion 274 and the disc portion 223 are in contact with each other over the entire circumference is the “standby position”. Further, the lever when the protruding portion 274 and the disc portion 223 are separated from each other by moving the disc portion 223 parallel to the protruding portion 274 in the axial direction from the position where the protruding portion 274 and the disc portion 223 are in contact with each other. The position of the main body 210 is the “drawing position”.

  The protruding portion 274 can be brought into contact with the disc portion 223 at a single point by inclining the disc portion 223 with respect to the protruding portion 274 from a state in which the protruding portion 274 is in contact with the entire circumference of the disc portion 223. At this time, the protruding portion 274 makes point contact with the disc portion 223. This contact point serves as a fulcrum when the first lever member 220 is rotated. The position of the lever body 210 when the contact point is turned as a fulcrum is the “tilting position”. The position where the protrusion 274 contacts the entire circumference of the disk part 223 can be adjusted to the same position by the effect of the guide part 224, and the disk part 223 is inclined from this state. The upper fulcrum can be fixed at a predetermined position from the axial center. In particular, this fulcrum is provided on a tangent line that contacts the entire circumference of the disc portion 223.

  The covering portion 272 is connected to the first support portion 270 and has a cylindrical covering portion main body 275 that can secure a space in which the first lever member 220 operates, and an end portion of the covering portion main body 275 connected to the substrate 271. And an open end 276 provided on the opposite side.

  The covering portion main body 275 has an inner peripheral diameter equal to or larger than the outer peripheral diameter of the disc portion 223. As shown in FIG. 4, the cover portion main body 275 is configured to tilt the first lever member 220 while the protrusion 274 and the disc portion 223 are in contact with each other at at least one point. In this tilting operation, the cover body 275 is movable in the cylinder core direction so that the part of the disk part 223 that is separated from the protrusion 274 of the disk part 223 against the urging force of the second support part 280 can move. It comes to have. Further, as shown in FIG. 5, the covering portion main body 275 has a second support in parallel to the protruding portion 274 from the position where the protruding portion 274 and the disk portion 223 are in contact with each other over the entire circumference. It has a length in the cylinder core direction that can move while resisting the urging force by the portion 280.

  The opening end portion 276 is an opening having a size larger than the range in which the shaft portion 221 of the first lever member 220 moves during the tilting operation. Furthermore, the opening end 276 includes an annular hooking portion 277 that is bent toward the inner side in the cylinder core direction and hooks the other end side of the second support portion 280 on the inner side.

  The second support part 280 is configured by an elastic body (hereinafter described with the same reference numerals as those of the second support part 280). The elastic body 280 according to the present embodiment is a conical push spring (taper push spring). The elastic body 280 is a spring having a diameter longer than the diameter of the shaft portion 221. The elastic body 280 is inserted into the shaft portion 221 and supports the disk portion 223 by abutting from the shaft portion 221 side toward the front end side in the axial direction. The elastic body 280 makes the end portion with a short diameter contact the disk portion 223 and makes the end portion with a long diameter contact the latching portion 277 of the opening end portion 276.

  As shown in FIGS. 1 and 2, the terminal main body 300 controls a casing 310 to which the indicating means 100 and the lever switch 200 are attached, a motor (not shown) for driving the arms 121 and 121, and a picking work terminal. A control board (not shown), and a fixture 320 for fixing the casing 310 to the pipe P.

  The casing 310 has a rectangular shape with a height substantially equal to the diameter of the pipe P. The casing 310 is attached to the pipe P so that the pipe P is on the back side, and the lamp 110 is disposed on the front side thereof. On the bottom surface of the casing 310, the lever switch 200 is arranged so that the free end side of the lever body 210 faces downward. A motor and a control board are housed inside the casing 310.

  The motor rotates the shafts 123 and 123 of the arms 121 and 121 by a predetermined angle in order to move the shutter 120 to the open position or the closed position.

  The control board includes a control circuit that controls the instruction unit 100 and the lever switch 200, a drive circuit that drives a motor by a signal from the control circuit, a power supply circuit that supplies power to the control board, a picking device main body, and a lever A switch 200 and an external connection terminal connected to an external power source.

  The fixture 320 is provided on the back side of the casing 310 and is disposed on the front surface of the pipe P. Therefore, the fixing tool 320 can arrange | position the casing 310 so that the casing 310 may not interfere with an operation | work when an operator takes out components.

  Next, the operation of the picking work terminal according to the present embodiment will be described. First, when the picking work terminal receives a signal from the picking apparatus main body indicating that the corresponding part is a picking target, the lamp 110 is turned on and the arms 121 and 121 are opened (shown by two-dot chain lines in FIG. 2). The shutter 120 is rotated to (position) and the shutter 120 is opened, the corresponding part and the position of the part are notified, and the operator is prompted to pick.

  When the worker finishes picking the part, the operator operates the lever switch 200 of the picking work terminal corresponding to the part to confirm completion of the picking work. The picking work terminal whose completion has been confirmed sends a picking completion confirmation response to the picking apparatus body. The picking work terminals that have received the completion confirmation responses from all the picking work terminals move to the next picking work.

  Next, the operation of the lever switch 200 when the operator operates the lever switch 200 of the picking work terminal will be described in detail. The lever switch 200 according to the present embodiment can be switched by tilting the lever main body 210 of the lever switch 200 with respect to the support means 260 or by pulling the support body 260. . Therefore, the operation of each lever switch 200 during the tilting operation and the pulling operation will be described.

  First, the case where switching is performed by tilting the lever body 210 of the lever switch 200 with respect to the support means 260 will be described with reference to FIGS. In the present embodiment, as illustrated in FIGS. 1 and 2, an example in which the free end of the lever main body 210 of the lever switch 200 is arranged vertically downward with respect to the terminal main body 300 will be described. The same applies to the case where the lever body 210 of the lever switch 200 is disposed so that the free end of the lever switch 200 is horizontally and horizontally with respect to the terminal body 300. That is, the lever body 210 of the lever switch 200 is not maintained in a state where it is tilted downward by its own weight because the first lever member 220 is supported by the support means 260.

  Before the lever main body 210 of the lever switch 200 is operated (when the lever main body 210 is in the standby position), the disc portion 223 of the first lever member 220 is moved by the urging force of the elastic body 280 as shown in FIG. The first support portion 270 is pushed up to the protruding portion 274 side and is in contact with the protruding portion 274 over the entire circumference. The posture of the lever body 210 is in a state along the center direction of the annular protrusion 274. At this time, the magnet 251 provided at the tip of the first lever member 220 is in a position facing the magnetic sensor 252 provided in the first support portion 270, and the switching element 250 is in an on state.

  When the lever main body 210 of the lever switch 200 in the standby position is tilted, the disk portion 223 of the first lever member 220 is pushed up to the protruding portion 274 side by the urging force of the elastic body 280 as shown in FIG. While making contact with the portion 274 at one point, the projection 274 is rotated against the urging force of the elastic body 280 with the contact point as a fulcrum, and is separated from the portion of the projection 274 other than the fulcrum. The posture of the lever body 210 is inclined from the center direction of the annular protrusion 274.

  At this time, the magnet 251 provided at the tip of the first lever member 220 also rotates about the contact point between the projection 274 and the disc part 223, and therefore the distance from the magnetic sensor 252 provided in the first support part 270. Are separated from each other, and the switching element 250 switches to an off state.

  When the lever main body 210 is released from the tilting operation, the disc portion 223 of the first lever member 220 is pushed up to the protruding portion 274 side by the urging force of the elastic body 280 with the contact point as a fulcrum, and around the protruding portion 274. It returns to the state which touches over. The posture of the lever main body 210 also returns to the state of being directed toward the center of the annular protrusion 274. At this time, the magnet 251 provided at the tip of the first lever member 220 is in a position facing the magnetic sensor 252 provided in the first support portion 270, and the switching element 250 switches to the on state. When the switching element 250 is switched to the on state, confirmation of completion of the picking operation is performed.

  Next, a case where switching is performed by pulling the lever main body 210 of the lever switch 200 with respect to the support means 260 will be described with reference to FIGS. When the lever main body 210 of the lever switch 200 in the standby position is pulled, the disc portion 223 of the first lever member 220 resists the urging force of the elastic body 280 as shown in FIG. It moves away from the projection 274 and moves parallel to the center direction of the annular projection 274. The posture of the lever main body 210 is pulled out from the support means 260 while facing the center direction of the annular projection 274. At this time, the magnet 251 provided at the tip of the first lever member 220 is in a position facing the magnetic sensor 252 provided in the first support portion 270, but the distance from the magnetic sensor 252 is separated, and the switching element 250 switches to an off state.

  When the lever main body 210 is released from the pulling operation, the disk portion 223 of the first lever member 220 is pushed up to the protruding portion 274 side by the urging force of the elastic body 280 and is in contact with the protruding portion 274 over the entire circumference. Return to. Even when the tension direction of the lever main body 210 is shifted from the center of the protrusion 274, the disc portion 223 of the first lever member 220 is guided by the guide portion 224. Thus, the state returns to contact with the protrusion 274 over the entire circumference. The posture of the lever main body 210 also returns to the state of being directed toward the center of the annular protrusion 274. At this time, the magnet 251 provided at the tip of the first lever member 220 is in a position facing the magnetic sensor 252 provided in the first support portion 270, and the switching element 250 switches to the on state. When the switching element 250 is switched to the on state, confirmation of completion of the picking operation is performed.

  As described above, according to the picking work terminal according to the present embodiment, the switching element 250 is turned on when the lever main body 210 is in the standby position. When the lever main body 210 is tilted or pulled from the standby position, the switching element 250 is switched to the OFF state in conjunction with the operation of the lever main body 210. In this way, the lever switch 200 switches between the on state and the off state by the operation of the lever body 210 supported by the support means 260 in the standby position with the disc portion 223 of the lever body 210 being sandwiched. Thus, even if it is used for picking work in which the lever switch is operated every time picking is completed, this picking work terminal can be used over a long period of time because it switches between on and off without contact. Durability can be provided.

  Further, the switching element 250 can be switched between the on state and the off state in a non-contact manner depending on the positional relationship between the magnet 251 provided at one end of the lever body 210 and the magnetic sensor 252 provided in the first support portion 270. Composed.

  That is, when the lever body 210 is tilted or pulled from the standby position, the position of the magnet 251 provided at one end of the lever body 210 is displaced, and the switching element 250 changes the distance from the magnetic sensor 252 to the magnet. The magnetic sensor 252 detects the change in the magnetic field from 251. The switching element 250 is configured such that the on state and the off state are switched by the change of the magnetic field without bringing the magnet 251 and the magnetic sensor 252 into contact with each other.

  Further, since the second support portion 280 supports the lever main body 210 while urging a part of the lever main body 210 toward the first support portion 270 side, the lever main body 210 performs the tilting operation or the pulling operation for switching to the off state. 2 Operate against the urging by the support 280. When the lever main body 210 is released from the operation against the urging by the second support portion 280, the lever main body 210 is urged by the second support portion 280 so that the disk portion 223 of the lever main body 210 is moved to the standby position. It operates so as to be displaced, and operates until the disc part 223 of the lever main body 210 contacts the first support part 280. The magnetic element 251 provided in the lever main body 210 and the magnetic sensor 252 provided in the first support portion 280 are returned to the positional relationship, and the switching element 250 returns to the state when the lever main body 210 is in the standby position. Therefore, the switching element 250 is configured to be switched to the off state in a non-contact manner, and the positional relationship between the on state and the off state is reliably switched.

  The lever main body 210 changes the positional relationship between the magnet 251 provided in a part of the lever main body 210 and the magnetic sensor 252 provided in the first support portion 270 while resisting the elastic force of the elastic body 280. be able to. For example, the positional relationship between the magnet 251 of the lever main body 210 and the magnetic sensor 252 of the first support portion 270 can also be changed by pulling the lever main body 210. The positional relationship between the magnet 251 of the lever main body 210 and the magnetic sensor 252 of the first support portion 270 can also be changed by tilting the lever main body 210. Therefore, the picking work terminal can provide a degree of freedom in the operation of the lever body.

  Note that the picking work terminal according to the present invention is not limited to the above-described embodiment, and various changes can be made without departing from the scope of the present invention.

  In the picking work terminal according to the above-described embodiment, the example in which the support unit 260 supports the lever main body 210 with the disc portion 223 having a predetermined thickness of the lever main body 210 as illustrated in FIGS. However, the present invention is not limited to this. For example, a part of the lever main body may be a flange-shaped disk part. Further, a part of the lever main body is not limited to the one having the flat contact surface as in the present embodiment in which the disc portion contacts the protrusion, but has a concave depression in an annular shape and the radial direction of the fulcrum The movement may be restricted. The disk portion of the lever body may be at any position of the lever body as long as it can be sandwiched by the support means, and is not limited to the midway portion in the axial direction of the first lever member. You may be provided in the front-end | tip part.

  In the picking work terminal according to the above-described embodiment, the example in which the switching element 250 includes the magnet 251 and the magnetic sensor (Hall element) 252 has been described. However, the present invention is not limited to this. For example, the switching element includes an optical type including a light emitting unit that emits light (electromagnetic wave), a light receiving unit that receives light emitted from the light emitting unit, and a reflecting mirror that reflects light emitted from the light emitting unit. The non-contact switching element may be used. The light here is not limited to visible light, but also includes infrared light and ultraviolet light. This switching element can be applied to the present invention by providing a light emitting part and a light receiving part on the first support part 270 side and providing a reflecting mirror at the tip of the first lever member 220.

  In the picking work terminal according to the above-described embodiment, the example in which the second support portion 280 is a conical spring is described, but the present invention is not limited to this. For example, the second support portion may be a push spring other than the conical push spring, or a columnar or truncated cone rubber having an opening at the center of the shaft.

  When the picking work terminal according to the embodiment is returned from the pulling operation of the first lever member 220 to the standby position, the disk portion 223 of the first lever member 220 and the protrusion 274 of the first support portion 270 are all Although an example in which the truncated cone-shaped guide portion 224 that guides back to the position where it contacts the circumference is provided at the tip of the first lever member 220 has been described, the present invention is not limited to this. For example, the guide portion 224 may have a truncated cone-shaped inclined surface warped in the outer diameter direction or a shape warped in the inner diameter direction.

  Although the picking work terminal according to the above embodiment has been described as an example in which the lever main body 210 is in the on state when the lever body 210 is in the standby position and is in the off state when performing the tilting operation or the pulling operation, it is limited to this. Instead, the lever main body 210 may be in an off state when the lever body 210 is in the standby position, and may be configured to be in an on state when performing a tilting operation or a pulling operation.

  In the picking work terminal according to the above embodiment, the example in which the operation assisting means is the through hole 243 has been described, but the present invention is not limited to this. For example, the operation assisting unit may be a hook that can hook a string or the like.

  Although the picking work terminal according to the above embodiment has been described as being provided in a pipe rack and attached to the pipe P of the pipe rack using the fixture 320, the present invention is not limited to this. For example, the picking work terminal can be applied to a parts shelf such as a steel rack.

  DESCRIPTION OF SYMBOLS 100 ... Instruction means, 110 ... Lamp (notification means), 120 ... Shutter (picking restriction means), 121 ... Arm, 122 ... Shutter main body, 123 ... Shaft, 200 ... Lever switch, 210 ... Lever main body, 220 ... First lever 221 ... Shaft part, 222 ... Mounting groove, 223 ... Disk part, 224 ... Guide part, 225 ... Fitting part, 225a ... Top part, 225b ... Fitting groove part, 230 ... Second lever member, 231 ... Buffer part 232 ... Insertion port, 240 ... 3rd lever member, 241 ... Operation part, 242 ... Insertion part, 243 ... Through-hole (operation assistance means), 250 ... Switching element, 251 ... Magnet, 252 ... Magnetic sensor, 253 ... Control board, 260 ... Support means, 270 ... First support part, 271 ... Substrate, 272 ... Cover part, 273 ... Substrate body, 274 ... Projection part, 275 ... Cover part body 276 ... open end 277 ... hook portion, 280 ... second supporting portion (elastic member), 300 ... terminal main body, 310 ... casing, 320 ... fixtures, P ... (the parts shelves) Pipe

The picking work terminal according to the present invention is a picking work terminal comprising: instruction means for instructing the timing of picking to an operator; and a lever switch used for confirming that the picking is completed. lever switch, supports a lever body, and the switching elements of the non-contact type capable switching an oN state and an oFF state by the operation of the lever main body, the lever main body across a portion of the lever body, and the a support means for supporting the lever body at the standby position, and a support means for supporting the acceptably the lever body an operation of the lever main body for switching the switching element to the on state or the off-state The switching element includes a magnet provided at one end of the lever body and the one end of the lever body. A magnetic sensor capable of detecting a change in a magnetic field caused by displacing the position of the magnetic sensor, wherein the support means is located at a position facing the magnet in a state where the lever body is supported at the standby position. A first support part for supporting the lever body so as to be positioned, and the first support part for positioning the lever body so that the one end side of the lever body is in contact with the first support part. A second support portion that biases and supports the lever body, and supports the lever body with the first support portion and the second support portion sandwiching the part of the lever body, the first support portion includes a projection portion projecting annularly the portion of the lever body, a disc portion der Rukoto contact capable flange is provided over the entire circumference of the protrusion of the annular Features.

The lever switch is switched between an on state and an off state by the operation of the lever body supported by the support means at the standby position with the disc part sandwiched between the protrusion and the second support part (or elastic body). According to the operation of the lever body, the first support part can make the disk part of the lever body come into contact with the annular protrusion, and corresponds to the movement of the lever body in the entire axial direction. can do. Therefore, even if it uses for the picking operation | work which operates a lever switch every time picking is completed, the durability which can be used for a long period of time is provided.

Claims (4)

In a picking work terminal comprising instruction means for instructing the timing of picking to an operator, and a lever switch used for confirming completion of the picking,
The lever switch includes a lever body, a non-contact type switching element capable of switching between an on state and an off state by operation of the lever body, and supports the switching element in a standby position with a part of the lever body interposed therebetween. A picking work terminal comprising: support means for acceptably supporting the operation of the lever main body for switching to an on state or an off state. The switching element comprises a magnet provided at one end of the lever body, and a magnetic sensor capable of detecting a change in the magnetic field caused by displacing the position of the one end of the lever body.
The support means includes a first support portion that supports the lever body so that the magnetic sensor is positioned at a position facing the magnet in a state where the lever body is supported at the standby position, and a first support portion on one end side of the lever body. And a second support portion that biases and supports the lever body toward the first support portion so as to be positioned in a state where the lever body can be contacted with the first support portion, and the lever body is configured by the first support portion and the second support portion. The picking work terminal according to claim 1, wherein a part of the picking work is supported.   The picking work terminal according to claim 2, wherein the second support part is configured by an elastic body. The first support part includes a protruding part protruding in an annular shape,
4. The picking work terminal according to claim 2, wherein a part of the lever main body is a disk portion provided with a flange so as to be able to contact the entire circumference of the annular protrusion. 5.

Images