JP3213289U - Pendant switch for crane operation - Google Patents

Abstract

Provided is a pendant switch for crane operation that can confirm the position of a button not only by visual observation but also by tactile sensation of a hand even when preliminary visual confirmation is insufficient. A crane operation pendant switch 1A including a main body 10 and a plurality of operation buttons 20 to 27 arranged on the surface of the main body 10, wherein the plurality of operation buttons 20 to 27 are provided for each operation type. Three-dimensional patterns 30 to 32 that are different from each other are formed in regions corresponding to each group of operation types on at least one of the front surface, side surface, and back surface of the main body 10. [Selection] Figure 1

Description

  The present invention relates to a pendant switch for crane operation of a wired system and a wireless system, and more particularly to a technique for preventing erroneous operation of the pendant switch for crane operation.

  Overhead cranes are widely used in applications such as transporting heavy objects and parts in factories. An overhead crane runs on a runway (running track) provided along the walls on both sides of the building or outdoors, and a rail on the girder (transverse track) provided on the crane body in a direction perpendicular to the runway. The trolley ramps up, and the hook suspended from the trolley moves up and down. As described above, the overhead crane can generally perform three operations of hoisting / lowering, traversing, and traveling, and can secure a wide work area.

  When operating the overhead crane, the operator uses a wired pendant switch suspended from a girder or trolley. When the pendant switch is suspended from the girder, the operator moves together when the crane body travels, and does not move when the trolley is traversing. When the pendant switch is suspended from the trolley, the operator moves both when the crane is traveling and when the trolley is traversing. In this way, the trolley is moved to the target location, and the operation of lifting and lowering the hook is performed. Alternatively, the operator may use a wireless pendant switch.

  Since cranes handle heavy objects, damages caused by breakdowns, malfunctions, and misoperations are significant, and may involve disasters and human lives. Therefore, it is obliged to strictly manage the equipment, and safety measures such as pointing and calling and one-cushion exercise are also taken. However, human error related to switch operation is not completely eradicated.

There are two causes of the erroneous operation in the pendant type or the wireless type pendant. The first is when the operator tries to move in the wrong direction and presses the correct switch. The other is when the operator is correctly recognizing the direction to move, but accidentally presses the switch he / she wants to move.
The present invention aims to prevent the latter erroneous operation.

  As a cause of human error in which the switch is mistakenly pressed, a commonly used crane operation pendant has a large number of switches in one or two rows even though the crane is traveling and traversing, loading and unloading and a large number of switches. In other words, simple mechanical arrangements are used.

  For example, as shown in FIG. 1A, the pendant switch includes power on / off, crane traveling operation (south, north, etc.), trolley traversing operation (east, west, etc.), hook hoisting operation ( In general, a plurality of buttons for ancillary operations such as lighting and the like are arranged in a row.

  Therefore, in order to ensure the operation of these pendant switches at hand and prevent erroneous operation, visual inspection is essential, and there is a work procedure for reading and confirming the display of the operation button before the operator presses the button. There are many. However, even if there is such a work procedure, if you frequently neglect the visual check when you need to take your hand off the pendant, or if you are accustomed to the work or think, There was no way to avoid misoperation when the button was changed without realizing it.

  In order to prevent these erroneous operations, conventional methods include an alarm device and a speaker in the pendant switch, a mechanism to prevent malfunction in the crane hydraulic circuit, and a prevention mechanism in the electronic control circuit. There has been a technique for providing the information (for example, see Patent Documents 1 and 2).

  However, in the technology in which the alarm device and the speaker are provided in the pendant switch, there is a time difference from when the crane recognizes the erroneous operation to when the alarm is issued, and during that time, there is a problem that malfunction cannot be prevented. In addition, the technique of providing a malfunction prevention mechanism in the crane hydraulic circuit or in the electronic control circuit has a problem of how accurately the control circuit can recognize a slight series of complicated and fine continuous button operations as erroneous operations. .

JP 2009-062156 A JP 2008-143626 A

  The present invention has been made in view of the above situation, and unlike conventional methods of dealing with alarms or malfunction prevention mechanisms after an erroneous operation, even if the visual confirmation is insufficient, the button An object of the present invention is to provide a crane operation pendant switch that can confirm the position not only by visual observation but also by touch of the hand and prevent erroneous operation.

  The pendant switch for crane operation according to the present invention includes a main body and a plurality of operation buttons arranged on the surface of the main body, and the plurality of operation buttons are arranged and grouped according to operation types. In addition, a different three-dimensional pattern for each region is formed in a region corresponding to each group of operation types on at least one surface of the back surface.

  In the present invention, the three-dimensional pattern is a smooth portion, a frame-shaped convex portion, a frame-shaped concave portion, a point-shaped convex portion, a point-shaped concave portion, a convex strip portion, a concave strip that can be recognized by the tactile sensation of a finger that holds a pendant switch for crane operation. It is a preferred embodiment that it is selected from the above-mentioned parts.

  In this invention, it is set as the preferable aspect that the said area | region is partitioned off by the concave line part or the convex line part.

  In the present invention, it is preferable to form a three-dimensional pattern in which the extending direction is a right angle in each of the two regions corresponding to the motions in a right angle direction.

  In the present invention, it is a preferable aspect to form a three-dimensional pattern having the same shape and the opposite concavities and convexities in two regions corresponding to operations in opposite directions.

  In the present invention, the point-like convex portion, the point-like concave portion, the convex strip portion, the concave strip portion, the frame-shaped convex portion, the width of the frame-shaped concave portion is 2 to 10 mm, and the height (depth) is The preferred embodiment is 1 to 5 mm and the formation interval is 2 to 10 mm.

  According to the present invention, for example, areas corresponding to a group of winding / lowering operation buttons, a group of traveling operation buttons, a group of traversing operation buttons, and the like, which are different from each other on at least one of the front surface, the side surface, and the back surface. Since the three-dimensional pattern is formed, by recognizing the pattern with the tactile sensation of the fingers of the operator, the buttons of the group arranged in the area corresponding to the pattern can be recognized. Thereby, even when the operator does not visually check the button, there is an effect that it is possible to reduce the number of crane accidents due to a wrong button press.

(A) is a front view of the pendant switch for wired crane operation which concerns on one Embodiment of this invention, (b) is a back view. (A) is a front view of the pendant switch for wired crane operation which concerns on other embodiment of this invention, (b) is a back view. It is a perspective view of the pendant switch for wired crane operation which concerns on other embodiment of this invention. It is a perspective view of the pendant switch for wired crane operation which concerns on other embodiment of this invention. (A) is a front view of the pendant switch for wireless crane operation which concerns on other embodiment of this invention, (b) is a back view. It is a schematic diagram which shows the structure of the back surface in the pendant switch for a wireless crane operation of FIG.

  In the present invention, in order to fundamentally solve the erroneous operation of the button of the pendant switch, instead of the indirect compensation mechanism to deal with the malfunction after the erroneous operation has been executed, it works directly on the five senses of the operator, We studied to prevent erroneous operation by recognizing the type of button before executing the incorrect operation.

  As a result, it has been clarified by several experiments that it is simple and reliable to convey to the hand feeling with a pendant switch in order to work directly on the five senses of the operator. Through this experimental trial, an optimally shaped pendant switch that can prevent erroneous operation was obtained.

  As such a crane operation pendant switch, FIGS. 1A and 1B show the front and back surfaces of a wired crane operation pendant switch 1A according to the first embodiment of the present invention. The pendant switch 1A includes a main body 10 and a cable 11 that connects the main body 10 and a crane main body (not shown). The cable 11 sends an operation signal from the main body 10 to the crane main body. A plurality of operation buttons 20 to 27 are arranged in a line on the surface of the main body 10, and the periphery thereof is surrounded by the button protection frame 12. The button protection frame 12 protects the buttons so that the buttons 20 to 27 are not pressed and erroneously operated when the pendant switch 1A is dropped or brought into contact with another object.

  Buttons 20 and 21 are groups of power buttons for turning on / off the power of the crane body. Buttons 22 and 23 are a group of buttons for raising and lowering the crane hook. Buttons 24 and 25 are a group of travel operation buttons that move the crane body east / west on the runway. Buttons 26 and 27 are a group of traverse buttons that move the trolley south / north on the girder rail.

  Depending on the installation direction of the crane, the east-west direction may be traversing and the north-south direction may be traveling, or the crane may be installed in an oblique direction not along the east-west-north-north. Further, the buttons 20 to 27 shown in FIG. 1 are merely examples, and the present invention is not limited to this mode. For example, other known buttons such as a lighting button and an alarm button can be arranged.

  A smooth surface is formed in a region corresponding to the back surface of the power button groups 20 and 21. A plurality of dot-shaped convex portions 30 are formed in a region corresponding to the back surfaces of the lifting / lowering operation button groups 22 and 23. A plurality of ridges 31 are formed in the lateral direction of the drawing in a region corresponding to the back surface of the travel operation button groups 24 and 25. A plurality of ridges 32 are formed in the vertical direction of the drawing in a region corresponding to the back surface of the traversing action button groups 26 and 27.

  Thus, in the crane operation pendant switch 1A according to the first embodiment, for each group partitioned by a broken line in FIG. 1, a smooth surface, a point-like convex portion 30, a lateral direction are formed in the region corresponding to the group. Since different three-dimensional patterns such as the ridge portion 31 and the vertical ridge portion 32 are formed, when the operator selects a button using the pendant switch 1A as a hand, the operator feels the pattern on the back surface by touching the finger. Because it can be recognized, even if you are not looking at the button, you can accurately find the area where the target button is placed, and in advance which group the button you are trying to press belongs to Can be recognized.

  In the first embodiment, four types of smooth surfaces, point-like convex portions, and horizontal / longitudinal ridge portions were selected, but the present invention is not limited only to these aspects, for example, point-like concave portions, It can be a ridge, a diagonal ridge / strip, or a wavy ridge / strip, as long as the operator can identify the shape with the tactile sensation of a finger. The shape can be changed.

  In addition, a point-like convex part / concave part is formed by discrete points of irregularities made up of an arbitrary figure such as a round shape or a quadrangle in a plan view. The protrusions / recesses extend in a predetermined direction, and the frame-like protrusions / recesses are formed by closing the protrusions / recesses around a certain region.

  In the first embodiment, two buttons belonging to the same group are provided with a common three-dimensional pattern on the back surface, but a total of eight different patterns can be attached to each button.

  In the first embodiment, an arbitrary three-dimensional pattern can be given to an arbitrary group. However, for example, for a motion group that is in a perpendicular relationship with each other, such as a traveling motion and a traversing motion, a lateral ridge is formed. It is preferable to attach a three-dimensional pattern that is perpendicular to each other, such as 31 and the longitudinal ridges 32, because the relationship between the operations can be easily understood intuitively.

  2A and 2B show the front and back surfaces of a crane operation pendant switch 1B according to a second embodiment of the present invention. In 2nd Embodiment, the part which attached | subjected the same code | symbol has the same structure and effect as 1st Embodiment. In the second embodiment, recesses 40 to 42 are formed on the side surface of the main body 10.

  The recess 40 is formed at the boundary between the region of the power button groups 20, 21 and the region of the lift operation button groups 22, 23. The recess 41 is formed at the boundary between the region of the lift operation button groups 22 and 23 and the region of the travel operation button groups 24 and 25. The recess 42 is formed at the boundary between the region of the travel operation button groups 24 and 25 and the region of the traversing operation button groups 26 and 27.

  As described above, in the pendant switch for crane operation 1B according to the second embodiment, since the recesses 40 to 42 are formed at the boundaries of the areas of each group, the operator selects a button by holding the pendant switch 1B. Since the boundary of each area | region can be recognized by the recessed parts 40-42 when performing this, compared with the case of 1st Embodiment, the area | region where the target button is arrange | positioned can be located more correctly.

  In addition, although illustration was abbreviate | omitted below, the recessed parts 40-42 may extend not only to the side surface of the main-body part 10, but the back surface, and a convex part is extended instead of the recessed parts 40-42. May be present. In either case, the operator can recognize the boundary of each region.

  FIG. 3 is a perspective view of a pendant switch for crane operation 1C according to the third embodiment of the present invention. In 3rd Embodiment, the part which attached | subjected the same code | symbol has the same structure and effect as 1st Embodiment. In 3rd Embodiment, the dotted | punctate convex part 30, the horizontal protruding item | line part 31, and the vertical protruding item | line part 32 which were formed in the back surface of the main body part 10 of 1st Embodiment are the side surfaces of the main body part 10. Also formed.

  FIG. 4 is a perspective view of a crane operation pendant switch 1D according to the fourth embodiment of the present invention. In 4th Embodiment, the part which attached | subjected the same code | symbol has the same structure and effect as 1st Embodiment. In 4th Embodiment, the dotted | punctate convex part 30, the horizontal convex part 31, and the vertical convex part 32 which were formed in the back surface of the main-body part 10 of 1st Embodiment are the surface of the main-body part 10. It is also formed on the side (around the button protection frame 12).

  In the crane operation pendant switches 1C and 1D according to the third and fourth embodiments described above, the three-dimensional pattern formed in the region for each group of buttons is formed not only on the back surface but also on the side surface and the front surface. Therefore, when the operator selects a button with the pendant switch 1C / 1D in his / her hand, the opportunity for the finger to come in contact with the pattern of each region increases, so that the purpose can be more accurately compared to the case of the first embodiment. You can find the area where the buttons are located.

  In the above description, the third embodiment in which the pattern is formed on the back surface and the side surface, and the fourth embodiment in which the pattern is formed on the back surface, the side surface, and the surface have been described. However, the present invention is not limited thereto, and the pattern is only on the side surface. It is also possible to select an embodiment formed on the surface, an embodiment formed only on the front surface, and an embodiment formed on the front and back surfaces.

  5A and 5B show the front and back surfaces of a wireless crane operation pendant switch 1E according to a fifth embodiment of the present invention. In the fifth embodiment, the parts denoted by the same reference numerals are the same as those in the first embodiment in configuration and operational effects. In the fifth embodiment, for the button operation of the pendant switch 1E, an electric signal is transmitted to the crane body by a known wireless technology, and the crane can be operated in the same manner as a wired pendant switch. The wireless pendant switch 1E is characterized in that it is not necessary for the operator to move following the crane during traveling operation or traversing operation, and a distance can be maintained between the operator and the crane.

  As shown in FIG. 5A, a plurality of buttons are arranged in two rows on the surface of the pendant switch 1E. Among these, the buttons 20 to 27 have the same functions as those in the first embodiment, but the button 28 is a button for operating a crane lighting device, and the button 29 is a button for selecting a crane lifting speed.

  Hereinafter, in FIG.5 (b), the black painting part of the figure in a button is a convex part, and a white part is a recessed part. As shown in FIG. 5B, a smoothing unit 50 is formed at a position corresponding to the back side of the power-on button 20. An X-shaped recess 51 is formed at a position corresponding to the back side of the power-off button 21. One point-like convex portion 52 is formed at a position corresponding to the back side of the upward button 22. One dot-like recess 53 is formed at a position corresponding to the back side of the downward button 23. At a position corresponding to the back side of the east direction button 24, an arrow-shaped convex portion 54 pointing to the right side of the drawing and a convex strip extending to the tip of the arrow are formed. At a position corresponding to the back side of the west direction button 25, there are formed an arrow-shaped recess 55 pointing in the left direction of the drawing and a ridge extending to the tip of the arrow. At a position corresponding to the back side of the south direction button 26, an arrow-shaped convex portion 56 pointing downward in the drawing and a convex strip extending to the tip of the arrow are formed. At a position corresponding to the back side of the north direction button 27, an arrow-shaped recess 57 pointing upward in the drawing and a ridge extending to the tip of the arrow are formed. A plurality of dot-like convex portions 58 are formed at positions corresponding to the back side of the illumination button 28. At a position corresponding to the back side of the fine adjustment button 29, a ridge 59 extending obliquely in the drawing is formed.

  In the pendant switch for crane operation 1E according to the fifth embodiment, different three-dimensional patterns are formed at positions corresponding to the back side of each button, so the operator selects a button with the pendant switch 1E in hand. When doing this, the pattern can be recognized by the tactile sensation of the fingers on the back side of the button, so even if you do not look at the button, you can find the target button accurately, and which button is actually being pressed Whether it belongs to a group can be recognized in advance.

  Further, the power-off has a shape that is easy to imagine intuitively, such as an X mark, and the lifting / lowering operation button groups 22 and 23 have the same round shape and opposite concavities and convexities. , 25 and the traversing action button groups 26, 27 are opposite in direction of the arrow and opposite in the concave and convex directions, so that the combination of the buttons belongs to the same group and the actions are opposite to each other. Can be recognized intuitively.

  In the present invention, the operator usually operates with a glove fitted for safety, not a bare hand, so a certain amount of size is necessary to recognize the shape with the tactile sensation of the fingers. Specifically, the width of the dot-like convex portion, the dot-like concave portion, the convex strip portion, the concave strip portion, the frame-shaped convex portion, and the frame-shaped concave portion is preferably 2 to 10 mm, and more preferably 3 to 5 mm. The height (depth) is preferably 1 to 5 mm, and more preferably 2 to 3 mm. The formation interval is preferably 2 to 10 mm, and more preferably 3 to 5 mm.

  As a method of forming a concavo-convex three-dimensional pattern on the pendant switch of each embodiment of the present invention, it is conceivable to mold and manufacture a pattern in which the main body portion 10 is formed in advance when the pendant switch is manufactured. When forming a convex three-dimensional pattern, the method of adhering the seal-like member on which the convex pattern is formed to the pendant switch is used. When forming the concave three-dimensional pattern, the pendant switch body is cut. A method is also conceivable. The latter is preferable in that a three-dimensional pattern can be added to the conventional pendant switch or the specification can be flexibly dealt with.

  Further, as shown in the schematic diagram showing the configuration of the back side of the wireless crane operation pendant switch in FIG. 6A, a hole portion was formed afterwards in the portion corresponding to the back side of the case as indicated by reference numeral 13. As with the case on the front side or the case on the front side, a button with a hole formed from the beginning is prepared, and the dot-shaped protrusion 58 (and other members not shown) shown in FIG. 6B are manufactured as independent parts. Then, as shown in FIG. 6C, the crane operation pendant switch 1 </ b> E according to the fifth embodiment can be manufactured by fitting in a desired position.

  Contributes to improving crane operation accuracy and preventing accidents in factories.

1A to 1E: Pendant switch 10: Main body 11: Cable 12: Button protection frame 13: Case (button back side portion)
20: Power on button 21: Power off button 22: Up button 23: Down button 24: East button 25: West button 26: South button 27: North button 28: Lighting button 29: Crane lifting speed selection Button 30: Point-like convex part 31: Horizontal convex part 32: Vertical convex part 40-42: Concave part 50: Smooth part (corresponding to power-on)
51: X-shaped recess (corresponding to power-off)
52: Point-like convex part (corresponding to the upward direction)
53: Point-like recess (corresponding to the downward direction)
54: Arrow-shaped convex part (corresponding to the east direction)
55: Arrow-shaped recess (corresponding to the west direction)
56: Arrow-shaped convex part (corresponding to the south direction)
57: Arrow-shaped recess (corresponding to the north direction)
58: Point-like convex part (corresponding to lighting)
59: Slanted ridge (corresponds to fine adjustment)

Claims (6)

A pendant switch for crane operation comprising a main body and a plurality of operation buttons arranged on the surface of the main body,
The plurality of operation buttons are arranged in groups for each operation type,
A crane pendant switch for crane operation, wherein a three-dimensional pattern different from each other is formed in a region corresponding to each group of the operation types on at least one of the front surface, side surface, and back surface of the main body.   The three-dimensional pattern is selected from a smooth portion, a frame-shaped convex portion, a frame-shaped concave portion, a point-shaped concave portion, a point-shaped concave portion, a convex strip portion, and a concave strip portion that can be recognized by the tactile sensation of a finger gripping the crane operation pendant switch. The pendant switch for crane operation according to claim 1, wherein the pendant switch is for crane operation.   3. The crane operation pendant switch according to claim 1, wherein the region is partitioned by a concave stripe or a convex stripe.   The pendant switch for crane operation according to claim 2 or 3, wherein a three-dimensional pattern in which the extending directions are perpendicular to each other is formed in two regions corresponding to operations in a perpendicular direction to each other.   The pendant switch for crane operation according to claim 2 or 3, wherein a three-dimensional pattern having the same shape and opposite concavities and convexities is formed in two regions corresponding to operations in opposite directions to each other.   The point-like convex portion, the point-like concave portion, the convex strip portion, the concave strip portion, the frame-shaped convex portion, the width of the frame-shaped concave portion is 2 to 10 mm, and the height (depth) is 1 to 5, The crane operation pendant switch according to any one of claims 2 to 5, wherein the interval is 2 to 10 mm.

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