Position detection switch unit and position detection method

Abstract

The device is equipped with a frame body (7), a switch (3) that detects the position of the detected part (21) by moving the detecting part (30) up and down to turn it ON / OFF, and a lever plate (4) that moves the detecting part (30) up and down by inserting and removing it horizontally under the detecting part (30). The lever plate (4) has a protruding part (41) that can move in and out from the frame body (7) in a horizontal direction that intersects with the one horizontal movement direction (X) of the detected part (21), and a switch operating part (42) that is inserted and removed horizontally under the detecting part (30) in conjunction with the protruding part (41) moving in and out horizontally from the frame body (7) to turn the detecting part (30) ON / OFF.

Description

[Technical Field]

[0001] The present disclosure relates to a position detection switch unit and a position detection method. [Background technology]

[0002] Conventionally, mobile equipment such as switchgear housed in a distribution panel is equipped with a switch that detects the connection and disconnection positions. This switch has the following structure: A component (hereinafter referred to as a guide) for operating the switch is attached to the side of the circuit breaker carriage on the circuit breaker side of the mobile equipment such as the switchgear. In contrast, a switch is attached to the fixed frame side in which the circuit breaker is housed. This attachment method uses a microswitch for the switch body, and the microswitch is attached to a mounting plate according to the distance at which the circuit breaker's connection and disconnection positions are detected. This mounting plate is then attached to the side of a rail, which is a part of the fixed frame. The switch located at the back detects the circuit breaker's connection position, and the switch located at the front detects the circuit breaker's disconnection position. The switch operates when the guide directly pushes up the hinge lever of the microswitch as the circuit breaker moves to the back. The connection and disconnection positions of the circuit breaker are detected based on the switch's operation timing (see, for example, Non-Patent Document 1). [Prior art documents] [Non-patent literature]

[0003] [Non-Patent Document 1] Mitsubishi Electric, Mitsubishi High-Voltage Vacuum Circuit Breaker VF-20D / 25D / 32D / 40D Series, June 2020, p.07-12 Summary of the Invention [Problem to be solved by the invention]

[0004] In conventional position detection switch units and position detection methods, the amount by which the switch lever of the switch is pushed upward varies depending on the accuracy of the guide mounting position, the accuracy of the position where the microswitch is mounted on the mounting plate, and the accuracy of the position where the mounting plate is mounted on the fixing frame, as these are affected by the height dimensions of each.As a result, there was a problem in that during assembly, it was necessary to insert the circuit breaker body into the fixing frame, adjust the amount by which the switch is pushed upward depending on the combination, and check the switch operation.

[0005] The present disclosure discloses technology for solving the above-mentioned problems, and aims to provide a position detection switch unit and a position detection method that can be easily installed on a device to be detected without reducing the accuracy of position detection. [Means for solving the problem]

[0006] The position detection switch unit of the present disclosure includes: A position detection switch unit for detecting the position of a detection target, A frame body, a switch that detects the position of the detected part by moving a detecting part up and down to turn it on and off; a lever plate that moves the detection unit up and down by being inserted and removed horizontally below the detection unit; The lever plate is a protrusion that moves in and out of the frame body in a horizontal direction intersecting one horizontal movement direction of the detection part depending on whether or not the detection part comes into contact with the protrusion due to movement of the detection part in the movement direction; a switch operating unit that is inserted and removed horizontally under the detection unit in conjunction with the protrusion moving in and out horizontally from the frame body to the outside, and turns the detection unit on and off; Has, The lever plate is formed to rotate within a horizontal plane including one horizontal movement direction of the detection target part and a horizontal direction intersecting the one horizontal movement direction. too That is why. Further, the position detection method of the present disclosure includes: a position measurement method for a position measurement target device including the detection target portion that moves in the movement direction, The position detection switch unit described above is installed on a path in the movement direction of the detection target part, The detected part is brought into contact with the protrusion of the position detection switch unit by movement in the movement direction, and the position of the device to be positioned on the path is measured. It is something. [Effects of the Invention]

[0007] According to the position detection switch unit and the position detection method of the present disclosure, the position detection switch unit and the position detection method can be easily installed on a device whose position is to be detected without reducing the accuracy of position detection. [Brief explanation of the drawings]

[0008] [Figure 1] 1 is a front view showing a state in which a position detection switch unit according to a first embodiment is attached to a device whose position is to be detected. [Figure 2] 2 is a plan view showing the configuration of the position detection switch unit and the device whose position is to be detected shown in FIG. 1. FIG. [Figure 3] Fig. 3A is a perspective view seen from above showing the configuration of the position detection switch unit shown in Fig. 1. Fig. 3B is a front view showing the configuration of the position detection switch unit shown in Fig. 3A. [Figure 4] 4 is a perspective view seen from above showing the configuration of a frame of the position detection switch unit shown in FIG. 3. FIG. [Figure 5] Fig. 5A is a plan view showing the configuration of the lever plate of the position detection switch unit shown in Fig. 3. Fig. 5B is a left side view showing the configuration of the lever plate shown in Fig. 5A. Fig. 5C is a perspective view showing the configuration of the lever plate shown in Fig. 5A from above. Fig. 5D is a perspective view showing the configuration of the lever plate shown in Fig. 5A from below. [Figure 6] Fig. 6A is a plan view showing the configuration of the frame body, spring part, and lever plate when the switch of the position detection switch unit shown in Fig. 3 is in the OFF state. Fig. 6B is a plan view showing the configuration of the frame body, spring part, and lever plate when the switch of the position detection switch unit shown in Fig. 3 is in the ON state. [Figure 7] Fig. 7A is a plan view showing the configuration of the frame body, spring portion, lever plate, and roller portion when the switch of the position detection switch unit shown in Fig. 3 is in the OFF state, and is a plan view seen from the direction of the arrows along line Z2-Z2 in Fig. 7B. Fig. 7B is a front view of the position detection switch unit shown in Fig. 7A seen from the direction of the arrows along line Z1-Z1. [Figure 8] Fig. 8A is a plan view showing the configuration of the frame body, spring portion, lever plate, and roller portion when the switch of the position detection switch unit shown in Fig. 3 is in the ON state, and is a plan view seen from the direction of the arrows along line Z4-Z4 in Fig. 8B. Fig. 8B is a front view of the position detection switch unit shown in Fig. 8A seen from the direction of the arrows along line Z3-Z3. [Figure 9] 10 is a front view showing a state in which a position detection switch unit according to a second embodiment is attached to a device whose position is to be detected. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0009] Embodiment 1 FIG. 1 is a front view showing a state in which a position detection switch unit according to embodiment 1 is attached to a device to be subjected to position detection. FIG. 2 is a plan view showing the configuration of the position detection switch unit and the device to be subjected to position detection shown in FIG. 1. FIG. 3A is a perspective view from above showing the configuration of the position detection switch unit shown in FIG. 1. FIG. 3B is a front view showing the configuration of the position detection switch unit shown in FIG. 3A. For convenience, FIG. 3B does not show the other side surface 72 of a frame 7, which will be described later. FIG. 4 is a perspective view from above showing the configuration of the frame of the position detection switch unit shown in FIG. 3.

[0010] Fig. 5A is a plan view showing the configuration of the lever plate of the position detection switch unit shown in Fig. 3. Fig. 5B is a left side view showing the configuration of the lever plate shown in Fig. 5A. Fig. 5C is a perspective view from above showing the configuration of the lever plate shown in Fig. 5A. Fig. 5D is a perspective view from below showing the configuration of the lever plate shown in Fig. 5A. Fig. 6A is a plan view showing the configuration of the frame body, spring part, and lever plate when the switch of the position detection switch unit shown in Fig. 3 is in the OFF state. Fig. 6B is a plan view showing the configuration of the frame body, spring part, and lever plate when the switch of the position detection switch unit shown in Fig. 3 is in the ON state.

[0011] Fig. 7A is a plan view showing the configuration of the frame body, spring portion, lever plate, and roller portion of the position detection switch unit shown in Fig. 3 when the switch is in the OFF state, as viewed from the direction of the arrows along line Z2-Z2 in Fig. 7B. Fig. 7B is a front view of the position detection switch unit shown in Fig. 7A when viewed from the direction of the arrows along line Z1-Z1. Fig. 8A is a plan view showing the configuration of the frame body, spring portion, lever plate, and roller portion of the position detection switch unit shown in Fig. 3 when the switch is in the ON state, as viewed from the direction of the arrows along line Z4-Z4 in Fig. 8B. Fig. 8B is a front view of the position detection switch unit shown in Fig. 8A when viewed from the direction of the arrows along line Z3-Z3.

[0012] First, in the first embodiment, a circuit breaker will be described as an example of a position detection target device having a detectable portion, on which the position detection switch unit 1 is installed. As shown in FIGS. 1 and 2 , the detectable portion is a carriage 21 on which a circuit breaker (not shown) is mounted. The carriage 21 moves on a rail 20, which serves as a path formed on a fixed frame 22 for storing the circuit breaker, to limit the range of movement of the circuit breaker to one horizontal direction when inserting or removing it. Therefore, the circuit breaker itself moves in one horizontal direction together with the carriage 21, which is the detectable portion. Here, the horizontal direction of movement is referred to as a movement direction X, and the right side (near side) on the paper surface is referred to as the rear side X1, and the left side (far side) on the paper surface is referred to as the front side X2. The position detection switch unit 1 is installed above the rail 20 at two locations on the fixed frame 22, spaced a predetermined distance apart in the movement direction X.

[0013] The two locations where the position detection switch unit 1 is installed are positions for detecting the connected position and the disconnected position of the circuit breaker. Here, the front side X2 of the position detection switch unit 1 is for detecting the connected position, and the rear side X1 is for detecting the disconnected position. The installation height position of the protrusion 41 of the lever plate 4 (described later) of the position detection switch unit 1 installed on the fixed frame 22 is installed at a position lower than the upper surface of the carriage 21, and is at a height where the protrusion 41 of the lever plate 4 comes into contact when the carriage 21 moves in the movement direction X. This allows the position of the circuit breaker to be detected as being in the connected position or the disconnected position.

[0014] Next, the configuration of the position detection switch unit 1 will be described. As shown in Fig. 3, the position detection switch unit 1 has a frame 7, a switch 3, a lever plate 4, and a spring portion 5. The switch 3 has a main body 33 and a detection portion 30, and detects the position of the cart 21 by moving the detection portion 30 up and down to turn it on and off. The detection portion 30 has a roller portion 31 and a hinge lever 32, one end of which is attached to the main body 33, which urges the roller portion 31 downward by a restoring force.

[0015] The main body 33 is fixed to the frame body 7 with screws 6 via screw holes 83 (described later) in the frame body 7, and does not move. In this embodiment, an example is shown in which two switches 3 are installed in the position detection switch unit 1 for redundancy, but this is not limited to this, and position detection can be performed in the same way with one switch 3. This is the same in the following embodiments, so explanations thereof will be omitted as appropriate.

[0016] As shown in Fig. 4, the frame 7 has one side surface 71, the other side surface 72, and a bottom surface 73, and is formed with a substantially U-shaped vertical cross section. The lower side of the one side surface 71 has a locking portion 82 that is partially cut out and protrudes upward, and the upper side has a screw hole 83. The lower side of the other side surface 72 has a side hole 81. The bottom surface 73 has bottom openings 84 and 85 and an arc-shaped guide hole 86 in two locations.

[0017] 5, the lever plate 4 has a protrusion 41 that can move in and out of the frame 7 in a horizontal direction intersecting the moving direction X of the cart 21, and a switch operating part 42 that moves in and out horizontally below the roller part 31 of the detection part 30 in conjunction with the protrusion 41 moving in and out horizontally from the frame 7 to the outside, thereby turning the detection part 30 on and off. The switch operating part 42 has an opening 43, a notch 44, a guide part 45 that protrudes downward, and an elongated hole 46.

[0018] The initial position in which no external force is applied to protrusion 41 will be described with reference to Fig. 6A. Lever plate 4 is installed on bottom surface 73 of frame body 7. Protrusion 41 of lever plate 4 is arranged to protrude outward from side hole 81 of frame body 7 (see Fig. 3), and is formed so as to be able to move in and out of frame body 7 in the horizontal direction intersecting with the moving direction X of cart 21. Furthermore, guide portion 45 of lever plate 4 is installed by being inserted into guide hole 86 (see Fig. 3).

[0019] Spring portion 5 is engaged with engaging portion 82, one end of which is bent into, for example, an L-shape and inserted into elongated hole 46 of lever plate 4, and the restoring force of spring portion 5 biases lever plate 4 in one horizontal direction, in this case, outward toward the other side surface 72 of frame 7 (see FIG. 7A). As a result, when no force is applied to protruding portion 41, protruding portion 41 is held in its initial position protruding outward from side surface hole 81, as shown in FIG. 6A.

[0020] In this state, opening 43 of lever plate 4 and bottom opening 84 of frame 7 are in communication with each other in the vertical direction, and notch 44 of lever plate 4 and bottom opening 85 of frame 7 are in communication with each other. As shown in Fig. 7B, roller portion 31 is biased downward by hinge lever 32, and as shown in Fig. 7A, roller portion 31 of switch 3 is positioned in opening 43, bottom opening 84, notch 44, and bottom opening 85, which are in communication with each other in the vertical direction, with switch operating portion 42 not inserted below roller portion 31, and switch 3 remains OFF.

[0021] Next, a state in which an external force is applied to protrusion 41 will be described with reference to Fig. 6B. When truck 21 applies a force in movement direction X to protrusion 41 of lever plate 4, which is disposed so as to protrude outward from side hole 81 of frame body 7, protrusion 41 moves inward from side hole 81 of frame body 7 (see Fig. 4). Naturally, a force greater than the restoring force of spring portion 5 is applied to lever plate 4 in a direction toward the inside of frame body 7 in the horizontal direction.

[0022] In this manner, when a force is applied to the protrusion 41, the guide portion 45 slides along the guide hole 86, and the switch actuation portion 42 moves. As the switch actuation portion 42 moves, the opening 43, the bottom opening 84, the notch 44, and the bottom opening 85 do not communicate with each other in the vertical direction.

[0023] 8A, the switch actuation portion 42 is inserted below the roller portion 31, and as shown in FIG. 8B, the roller portion 31 moves upward, turning on the switch 3. Naturally, when the switch actuation portion 42 is inserted below the roller portion 31, an upward force of a magnitude greater than the force urging the roller portion 31 downward by the hinge lever 32 is applied. When the switch actuation portion 42 is inserted below the roller portion 31, the roller portion 31 rotates, making it easier for the roller portion 31 to ride up onto the switch actuation portion 42.

[0024] The amount of vertical movement of the roller portion 31 and the detection portion 30 of the hinge lever 32 is determined by the thickness of the lever plate 4 and the configuration of the frame 7. Therefore, the thickness of the lever plate 4 and the configuration of the frame 7 are appropriately determined according to the amount of vertical movement required for turning the detection portion 30 of the switch 3 ON and OFF.

[0025] Next, a position detection method using the position detection switch unit configured as described above will be described. First, as shown in Fig. 1, position detection switch units 1 are installed at locations on the fixing frame 22 corresponding to the connected position (front side X2) and disconnected position (rear side X1) of the circuit breaker mounted on the bogie 21, which require position detection. In this state, in each position detection switch unit 1, as shown in Figs. 6A and 7, the roller portion 31 of the switch 3 is positioned in the opening 43, bottom opening 84, notch portion 44, and bottom opening 85, which are connected in the vertical direction, and the switch operating portion 42 is not inserted below the roller portion 31, so the switch 3 remains OFF.

[0026] Next, the carriage 21 moves on the rail 20 toward the front side X2 in the movement direction X. Then, as shown in FIG. 2, the carriage 21 comes into contact with the protruding portion 41 of the position detection switch unit 1 on the rear side X1. Then, the position detection switch unit 1 on the rear side X1 slides while being guided by the guide hole 86 from the state in FIGS. 6A and 7 to the state in FIGS. 6B and 8, and the protruding portion 41 moves inside the frame body 7. Then, the switch operating portion 42 of the lever plate 4 is inserted below the roller portion 31, the roller portion 31 rises, and the switch 3 is turned ON.

[0027] At this time, the spring portion 5 causes the lever plate 4 to return to its initial position (a state in which the protrusion 41 protrudes outward from the side hole 81), but the protrusion 41 remains in contact with the circuit breaker carriage 21. In other words, the protrusion 41 remains pressed inward and cannot return to its initial position, so the protrusion 41 remains in its inwardly moved state, and the switch 3 continues to be ON. In this case, the switch 3 of the position detection switch unit 1 on the front side X2 remains OFF. In this way, it can be confirmed that the switch 3 of the position detection switch unit 1 on the rear side X1 is turned ON, and the circuit breaker mounted on the carriage 21 has reached the disconnected position.

[0028] Then, as the bogie 21 is further moved to the front side X2, the switch 3 of the position detection switch unit 1 on the front side X2 operates in the same manner as the position detection switch unit 1 on the rear side X1 described above, and the switch 3 is turned ON. This confirms that the circuit breaker mounted on the bogie 21 has reached the connection position. In this case, the switches 3 of both the position detection switch unit 1 on the front side X2 and the position detection switch unit 1 on the rear side X1 are turned ON.

[0029] In this way, since the position detection switch unit 1 can be installed in the circuit breaker to detect its position, no new jig is required for installation on the circuit breaker, installation is simple, classification of types during assembly is not required, and assembly errors are reduced. Furthermore, because the position detection switch unit 1 is formed with a simple configuration, standardization is easy and mass production is improved.

[0030] Furthermore, because position detection is performed in this manner, the installation position of the fixed frame 22 of the position detection switch unit 1 only needs to be a position that makes contact in the direction X of movement of the carriage 21, and as long as the protrusion 41 can move in the horizontal direction that intersects with the direction X of movement, the ON / OFF state of the switch 3 will not be affected even if the installation of the position detection switch unit 1 is slightly misaligned in the vertical direction. This makes it easy to check the installation and adjust the position of the position detection switch unit 1. In addition, the resistance of the switch 3 to chattering caused by the opening and closing shock of the circuit breaker is improved.

[0031] In the above-mentioned first embodiment, an example has been shown in which the device to be inspected for position is a circuit breaker and the part to be detected is the bogie 21, but this is not limiting and the device to be inspected for position can also be the part to be detected. Also, in the first embodiment, an example has been shown in which two position detection switch units 1 are used to detect the positions of two locations, but this is not limiting and the position detection switch units 1 may be installed according to the location of the position to be detected. In other words, if the location to be detected for the position is one, the same position detection can be achieved by installing one position detection switch unit 1. Furthermore, the same position detection can be achieved even if there are three or more locations.

[0032] As another position detection method, when the switch 3 is turned from ON to OFF, it is detected that the device to be detected for position detection, which has a detection target part, has left its position.

[0033] According to the position detection switch unit of the first embodiment configured as described above, A position detection switch unit for detecting the position of a detection target, A frame body, a switch that detects the position of the detected part by moving a detecting part up and down to turn it on and off; a lever plate that moves the detection unit up and down by being inserted and removed horizontally below the detection unit; The lever plate is a protrusion that can move in and out of the frame in a horizontal direction that intersects with one horizontal movement direction of the detection part; a switch operating portion that is inserted and removed horizontally below the detection portion in conjunction with the protrusion moving in and out horizontally from the frame body to the outside, and that turns the detection portion on and off; Therefore, the influence of ease of assembly to the device whose position is to be detected can be reduced.

[0034] Furthermore, according to the position detection switch unit of the first embodiment configured as described above, The detection unit A roller portion; a hinge lever that biases the roller portion downward by a restoring force; Therefore, it is easy to insert the switch operating portion below the roller portion.

[0035] Furthermore, according to the position detection switch unit of the first embodiment configured as described above, a spring portion fixed to the frame body; the lever plate is connected to the spring portion and is biased in a horizontal direction by the restoring force of the spring portion; The protruding portion of the lever plate is maintained at an initial position where it protrudes outside the frame body. Therefore, the initial position of the protrusion can be easily maintained.

[0036] Furthermore, according to the position detection method of the first embodiment configured as described above, a position measurement method for a position measurement target device including the detection target portion that moves in the movement direction, The position detection switch unit described above is installed on a path in the movement direction of the detection target part, A position measuring method for measuring the position of the device to be positioned on the path by bringing the detected part into contact with the protruding part of the position detecting switch unit by movement in the movement direction. So, It is possible to detect the position of one location of a position detection target device that has a detection target part that moves in the horizontal direction.

[0037] Furthermore, according to the position detection method of the first embodiment configured as described above, a position measurement method for a position measurement target device including the detection target portion that moves in the movement direction, the position detection switch unit is installed at a plurality of locations spaced apart by a predetermined distance along a path in the direction of movement of the detection target part, The detected part is moved in the moving direction to sequentially contact the protruding part of each of the position detection switch units, thereby sequentially measuring the position of the position measurement target device on the path. Therefore, it is possible to detect the positions of two locations of a position detection target device having a detection target part that moves in the horizontal direction.

[0038] Embodiment 2 9 is a front view showing a state in which the position detecting switch unit according to embodiment 2 is attached to a device whose position is to be detected. In the figure, parts that are the same as those in embodiment 1 above are assigned the same reference numerals and are omitted.

[0039] In the first embodiment, as shown in Fig. 1, an example has been shown in which two position detection switch units 1 are installed adjacent to each other in the direction of movement X, but this is not limited to this. Depending on the type of circuit breaker, as shown in Fig. 9, the positional relationship between the connected position and the disconnected position may be farther apart in the direction of movement X than in the first embodiment, and accordingly the two position detection switch units 1 are installed at positions farther apart in the direction of movement X than in the first embodiment. In this way, by appropriately installing the position detection switch unit 1 at the position where detection is desired, position detection can be achieved in the same way as in the first embodiment. Therefore, the present invention can be adopted for various types of circuit breakers or other equipment as long as it is equipment that moves horizontally.

[0040] While the present disclosure describes various exemplary embodiments and examples, the various features, aspects, and functions described in one or more embodiments are not limited to application to a particular embodiment, but may be applied to the embodiments alone or in various combinations. Therefore, countless variations not exemplified are conceivable within the scope of the technology disclosed in this specification, including, for example, cases where at least one component is modified, added, or omitted, and cases where at least one component is extracted and combined with components of another embodiment.

[0041] Various aspects of the present disclosure are summarized below as appendices.

[0042] (Appendix 1) A position detection switch unit for detecting the position of a detection target, A frame body, a switch that detects the position of the detected part by moving a detecting part up and down to turn it on and off; a lever plate that moves the detection unit up and down by being inserted and removed horizontally below the detection unit; The lever plate is a protrusion that can move in and out of the frame in a horizontal direction that intersects with one horizontal movement direction of the detection part; A position detection switch unit having a switch operating portion that is inserted and removed horizontally under the detection portion in conjunction with the protrusion moving in and out horizontally from the frame body to the outside, thereby turning the detection portion on and off. (Appendix 2) The detection unit A roller portion; 2. The position detection switch unit according to claim 1, further comprising a hinge lever that biases the roller portion downward by a restoring force. (Appendix 3) a spring portion fixed to the frame body; the lever plate is connected to the spring portion and is biased in a horizontal direction by the restoring force of the spring portion; The position detection switch unit according to claim 1 or 2, wherein the protruding portion of the lever plate is maintained in an initial position where it protrudes outside the frame body. (Appendix 4) a position measurement method for a position measurement target device including the detection target portion that moves in the movement direction, The position detection switch unit according to any one of Supplementary Note 1 to Supplementary Note 3 is installed on a path of the movement direction of the detection target part, A position measuring method for measuring the position of the device to be positioned on the path by bringing the detected part into contact with the protruding part of the position detecting switch unit by movement in the movement direction. (Appendix 5) a position measurement method for a position measurement target device including the detection target portion that moves in the movement direction, the position detection switch unit according to any one of Supplementary Note 1 to Supplementary Note 3 is installed at a plurality of locations spaced a predetermined distance apart on a path in the movement direction of the detection target part; A position measuring method in which the detected part is moved in the movement direction to sequentially contact the protruding part of each position detecting switch unit, thereby sequentially measuring the position of the device to be positioned on the path. [Explanation of symbols]

[0043] 1 position detection switch unit, 20 rail, 21 dolly, 22 fixed frame, 3 switch, 30 detection part, 31 roller part, 32 hinge lever, 33 main body, 4 lever plate, 41 protrusion part, 42 switch operating part, 43 opening, 44 notch part, 45 guide part, 46 oblong hole, 5 spring part, 6 screw, 7 frame body, 71 one side surface, 72 other side surface, 73 bottom surface, 81 side hole, 82 locking part, 83 screw hole, 84 bottom opening, 85 bottom opening, 86 guide hole, X movement direction, X1 rear side, X2 front side.

Claims

1. A position detection switch unit for detecting the position of a detection target, A frame body, a switch that detects the position of the detected part by moving a detecting part up and down to turn it on and off; a lever plate that moves the detection unit up and down by being inserted and removed horizontally below the detection unit; The lever plate is a protrusion that moves in and out of the frame body in a horizontal direction intersecting one horizontal movement direction of the detection part depending on whether or not the protrusion comes into contact with the detection part due to the movement of the detection part in the movement direction; A position detection switch unit having a switch operating portion that is inserted and removed horizontally under the detection portion in conjunction with the protrusion moving in and out horizontally from the frame body to the outside, thereby turning the detection portion ON and OFF.

2. The detection unit A roller portion; 2. The position detecting switch unit according to claim 1, further comprising a hinge lever that biases the roller portion downward by a restoring force.

3. a spring portion fixed to the frame body; the lever plate is connected to the spring portion and is biased in a horizontal direction by the restoring force of the spring portion; 3. The position detecting switch unit according to claim 1, wherein the protruding portion of the lever plate is held in an initial position where it protrudes outside the frame body.

4. a position measurement method for a position measurement target device including the detection target portion that moves in the movement direction, The position detecting switch unit according to claim 1 or 2 is installed on a path of the movement direction of the detected part, A position measuring method in which the detected part is brought into contact with the protruding part of the position detecting switch unit by moving in the movement direction, thereby measuring the position of the device to be positioned on the path.

5. a position measurement method for a position measurement target device including the detection target portion that moves in the movement direction, the position detecting switch unit according to claim 1 or 2 is installed at a plurality of locations spaced apart by a predetermined distance on a path of the movement direction of the detection target part, A position measuring method in which the detected part is moved in the movement direction to sequentially contact the protruding part of each position detecting switch unit, thereby sequentially measuring the position of the device to be positioned on the path.

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