Brake switch operating point confirmation jig and brake switch operating point confirmation method

Abstract

To provide a brake switch operating point confirmation jig that allows for more accurate and easier confirmation of the brake switch's operating point. [Solution] The brake switch operating point confirmation jig 50 comprises a first arm 51, a second arm 56, and a connecting shaft 68 that rotatably connects the first arm 51 and the second arm 56 to each other. The first arm 51 includes a first jaw portion 52 that can contact the detection piece 40. The second arm 56 includes a second jaw portion 57. The second jaw portion 57 includes a first branch portion 59 and a second branch portion 60 that can support thickness gauges 70, 71. The first branch portion 59 and the second branch portion 60 are spaced apart from each other in the axial direction of the connecting shaft 68.

Description

Technical Field

[0001] The present disclosure relates to an operating point confirmation jig for a brake switch and a method for confirming the operating point of a brake switch.

Background Art

[0002] Japanese Unexamined Patent Application Publication No. 2011-63434 (Patent Document 1) discloses a hoisting machine for an elevator including a braking device and a brake switch. The brake switch detects the operating state of the braking device. The brake switch is, for example, a microswitch. In the brake switch, the electric circuit of the microswitch is opened and closed by the reciprocating motion of the brake plunger of the braking device. In the inspection work of the brake switch, the inspector confirms whether the operating point of the brake switch exists at an appropriate position with respect to the range of the reciprocating motion of the brake plunger (the stroke of the brake plunger).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, the length of the stroke of the brake plunger is, for example, about 3 mm, which is small. Therefore, it is difficult to accurately confirm the operating point of the brake switch in the inspection work of the brake switch. The present disclosure has been made in view of the above problems, and an object thereof is to provide an operating point confirmation jig for a brake switch and a method for confirming the operating point of a brake switch that can confirm the operating point of the brake switch with higher accuracy and more easily.

Means for Solving the Problems

[0005] The brake switch operating point confirmation jig of this disclosure comprises a first arm, a second arm, and a connecting shaft that rotatably connects the first arm and the second arm to each other. The first arm includes a first jaw that can contact a detection piece. The elevator includes a hoisting machine, a brake device for braking the hoisting machine, and a brake switch for detecting the operating state of the brake device. The brake device includes a detection piece. The brake switch includes a contactor. The contactor is positioned opposite the detection piece. The second arm includes a second jaw. The second jaw includes a first branch and a second branch that can support a thickness gauge. The first branch and the second branch are spaced apart from each other in the axial direction of the connecting shaft.

[0006] The method for confirming the operating point of a brake switch according to this disclosure comprises clamping a detection piece and a thickness gauge between a first jaw, a first branch, and a second branch of a brake switch operating point confirmation jig. The elevator includes a hoisting machine, a brake device for braking the hoisting machine, and a brake switch for detecting the operating state of the brake device. The brake device includes a brake plunger and a detection piece fixed to the brake plunger. The detection piece has a first surface and a second surface opposite to the first surface. The brake switch includes a contact. The contact is positioned opposite the first surface of the detection piece. The brake switch operating point confirmation jig includes a first arm, a second arm, and a connecting shaft that rotatably connects the first arm and the second arm. The first arm includes a first jaw. The second arm includes a second jaw. The second jaw includes a first branch and a second branch. The first branch and the second branch are separated from each other in the axial direction of the connecting shaft. The thickness gauge is supported by a first branch and a second branch and contacts the first surface of the detection piece. The first jaw contacts the second surface of the detection piece. The method for confirming the operating point of a brake switch according to this disclosure comprises moving the thickness gauge along the first surface of the detection piece so that it crosses the gap between the detection piece and the contactor, while the detection piece and the thickness gauge are held between the first jaw, the first branch, and the second branch. [Effects of the Invention]

[0007] According to the brake switch operating point confirmation jig and brake switch operating point confirmation method disclosed herein, the operating point of the brake switch can be confirmed with higher accuracy and more easily. [Brief explanation of the drawing]

[0008] [Figure 1] This is a schematic diagram of the elevator according to the embodiment. [Figure 2] This is a schematic diagram of the brake device for the elevator hoisting machine according to the embodiment. [Figure 3] This is a schematic, partially enlarged view of the brake device of the elevator hoisting machine according to the embodiment. [Figure 4] This is a schematic side view of the operating point confirmation jig for the brake switch according to the embodiment. [Figure 5] This is a schematic plan view of the brake switch operating point confirmation jig according to the embodiment. [Figure 6] This diagram shows a flowchart of the method for confirming the operating point of the brake switch in Embodiment 1. [Figure 7] This diagram shows a flowchart of the steps for checking the operation of the brake switch using the first thickness gauge. [Figure 8] This diagram shows a flowchart of the steps for checking the operation of the brake switch using a second thickness gauge. [Figure 9] This is a schematic partial enlargement diagram showing one step of the method for confirming the operating point of the brake switch according to the embodiment. [Figure 10] This is a schematic, partially enlarged plan view showing one step of the method for confirming the operating point of the brake switch according to the embodiment. [Figure 11] This is a schematic partial enlargement view showing the next step in the brake switch operating point confirmation method of the embodiment, following the steps shown in Figures 9 and 10. [Figure 12] This is a schematic partially enlarged plan view showing the next step in the brake switch operating point confirmation method of the embodiment, following the steps shown in Figures 9 and 10. [Figure 13]It is a schematic partial enlarged view showing the step next to the steps shown in FIGS. 11 and 12 in the method for confirming the operating point of the brake switch according to the embodiment. [Figure 14] It is a schematic partial enlarged plan view showing the step next to the steps shown in FIGS. 11 and 12 in the method for confirming the operating point of the brake switch according to the embodiment. [Figure 15] It is a schematic partial enlarged view showing the step next to the steps shown in FIGS. 13 and 14 in the method for confirming the operating point of the brake switch according to the embodiment. [Figure 16] It is a schematic partial enlarged plan view showing the step next to the steps shown in FIGS. 13 and 14 in the method for confirming the operating point of the brake switch according to the embodiment. [Figure 17] It is a schematic partial enlarged cross-sectional view of the jig for confirming the operating point of the brake switch according to the first modification of the embodiment. [Figure 18] It is a schematic partial enlarged cross-sectional view of the jig for confirming the operating point of the brake switch according to the second modification of the embodiment. [Figure 19] It is a schematic side view of the jig for confirming the operating point of the brake switch according to the third modification of the embodiment.

Mode for Carrying Out the Invention

[0009] Hereinafter, embodiments of the present disclosure will be described. The same components are denoted by the same reference numerals, and the description thereof will not be repeated.

[0010] Referring to FIGS. 1 to 3, the brake device 20 to which the jig 50 for confirming the operating point of the brake switch according to the embodiment is applied and the elevator 1 including the brake device 20 will be described.

[0011] (Elevator 1) Referring to FIG. 1, the elevator 1 is provided with a machine room 2 and a hoistway 3. The machine room 2 is disposed above the hoistway 3. The elevator 1 includes, for example, a car 4, a counterweight 5, a main rope 6, a hoisting machine 7, a deflecting sheave 9, a landing 10, guide rails 11, 12, a braking device 20 (see FIGS. 2 and 3), and a brake switch 45 (see FIG. 3).

[0012] One end of the main rope 6 is connected to the car 4. The other end of the main rope 6 is connected to the counterweight 5. In the elevator 1, a plurality of main ropes 6 may be used. The hoisting machine 7 includes a motor (not shown) and a wire rope drum 8 driven by the motor. The main rope 6 is wound around the wire rope drum 8 and the deflecting sheave 9. When the wire rope drum 8 rotates, the main rope 6 moves. The car 4 moves up and down in the hoistway 3 while being guided by the guide rail 11. The counterweight 5 moves up and down in the hoistway 3 in the opposite direction to the car 4 while being guided by the guide rail 12.

[0013] The elevator 1 may be an elevator without a machine room (a machine roomless elevator). In a machine roomless elevator, the hoisting machine 7 is disposed, for example, at the lower part of the hoistway 3.

[0014] (Braking Device 20) Referring to FIGS. 2 and 3, the braking device 20 is a device for braking the hoisting machine 7. The braking device 20 is, for example, an electromagnetic braking device. The braking device 20 includes a brake frame 21, a brake drum 22, a brake arm 23, a brake shoe 25, a lining 26, a brake lever 27, an adjusting bolt 29, a brake spring 30, and a brake release device 33.

[0015] Referring to Figure 2, the brake drum 22 is fixed to the rotating shaft 13 of the motor of the hoisting machine 7 and can rotate with the rotating shaft 13. The brake arm 23 is supported on the brake frame 21 so as to be rotatable around the arm pin 24. The brake shoe 25 is attached to the middle part of the brake arm 23. The lining 26 is fixed to the surface of the brake shoe 25 that faces the brake drum 22. The lining 26 is movable between an operating position and a release position by the rotation of the brake arm 23. The operating position is the position in which the lining 26 contacts the outer circumferential surface of the brake drum 22 and presses against the brake drum 22. The release position is the position in which the lining 26 is away from the outer circumferential surface of the brake drum 22.

[0016] The brake lever 27 is positioned above the brake drum 22. The brake lever 27 is supported by the brake frame 21 so as to be rotatable around a lever pin 28. An adjustment bolt 29 is attached to the brake arm 23. The tip of the adjustment bolt 29 abuts against the brake lever 27. A brake spring 30 biases the brake arm 23 toward the brake drum 22. The lining 26 is pressed against the outer surface of the brake drum 22 by the brake spring 30.

[0017] The brake release device 33 is positioned above the brake lever 27 and is fixed to the brake frame 21. The brake release device 33 rotates the brake arm 23 away from the brake drum 22 against the brake spring 30, thereby moving the lining 26 from the operating position to the released position. Referring to Figure 3, the brake release device 33 includes a frame 34, a coil 35, a fixed core 36, a brake plunger 37, and a detection piece 40. The brake plunger 37 includes a rod 38 and a movable core 39.

[0018] The frame 34 houses the coil 35 and the fixed core 36. The coil 35 has a cylindrical shape. The fixed core 36 is located inside the coil 35. The rod 38 is located inside the coil 35 and the fixed core 36. The longitudinal direction of the rod 38 is the axial direction of the coil 35 (up and down in Figure 3). As shown in Figure 2, one end of the rod 38 is in contact with the brake lever 27. Referring to Figure 3, the movable core 39 is fixed to the rod 38. The movable core 39 is located inside the coil 35. The rod 38 and the movable core 39 are movable in the axial direction of the coil 35.

[0019] When the coil 35 is not energized, the movable core 39 is not attracted to the fixed core 36 and is away from the fixed core 36. The brake plunger 37 (more specifically, the rod 38) does not press against the brake lever 27. The brake lever 27 does not rotate around the lever pin 28 and does not press against the adjustment bolt 29. The brake spring 30 biases the brake arm 23 toward the brake drum 22. The lining 26 is pressed against the outer surface of the brake drum 22. The brake device 20 is in a braking state and applies a braking force to the rotating shaft 13 of the motor of the hoisting machine 7.

[0020] When the coil 35 is energized, the movable core 39 is attracted to the fixed core 36. The brake plunger 37 moves toward the fixed core 36. The brake plunger 37 (more specifically, the rod 38) presses against the brake lever 27. The brake lever 27 rotates around the lever pin 28 and presses against the adjustment bolt 29. The brake arm 23 rotates around the arm pin 24 away from the brake drum 22 against the biasing force of the brake spring 30. The brake shoe 25 moves away from the brake drum 22. The lining 26 moves away from the outer surface of the brake drum 22, moving from the operating position to the released position. The brake device 20 is in the released state, and the braking of the rotating shaft 13 of the motor of the hoisting machine 7 is released.

[0021] The detection piece 40 is, for example, a plate member such as a disc. The detection piece 40 has a first surface 41 and a second surface 42 opposite to the first surface 41. The detection piece 40 is fixed to the brake plunger 37. More specifically, the detection piece 40 is fixed to the rod 38. More specifically, the detection piece 40 is fixed to the other end of the rod 38. For example, a screw groove is formed at the other end of the rod 38, and the detection piece 40 is fixed to the other end of the rod 38 using a bolt that screws into the screw groove.

[0022] (Brake switch 45) Referring to Figure 3, the brake switch 45 detects the braking or release state of the brake device 20. The brake switch 45 is, for example, a microswitch. The brake switch 45 includes, for example, a switch body 46, a switch lever 47, and a contact 48.

[0023] One end of the switch lever 47 is attached to the switch body 46. A contact 48 is attached to the other end of the switch lever 47. The contact 48 is positioned in the longitudinal direction of the brake plunger 37 (axial direction of the coil 35) opposite the first surface 41 of the detection piece 40 and can contact the first surface 41 of the detection piece 40. The contact 48 is, for example, a rotating roller. When the detection piece 40 contacts the contact 48 and presses against the contact 48, the switch lever 47 flexes or rotates. When the switch lever 47 flexes or rotates, the switch body 46 emits an operating sound.

[0024] (Operation of the brake device 20 and brake switch 45) When the coil 35 is not energized, the brake device 20 is in a braking state and applies a braking force to the rotating shaft 13 of the motor of the hoisting machine 7. Specifically, when the coil 35 is not energized, the movable iron core 39 is not attracted to the fixed iron core 36, and the brake plunger 37 does not move. The brake plunger 37 (more specifically, the rod 38) does not press against the brake lever 27. The brake lever 27 does not rotate around the lever pin 28 and does not press against the adjustment bolt 29. The brake spring 30 biases the brake arm 23 toward the brake drum 22. The lining 26 is pressed against the outer surface of the brake drum 22. In this way, a braking force is applied to the rotating shaft 13 of the motor of the hoisting machine 7.

[0025] When the coil 35 is not energized, the detection piece 40 is away from the contact 48 of the brake switch 45, and the switch lever 47 neither bends nor rotates. The switch body 46 does not emit any operating noise.

[0026] When the coil 35 is energized, the brake device 20 is released, and the braking of the rotating shaft 13 of the motor of the hoisting machine 7 is released. Specifically, when the coil 35 is energized, the movable core 39 is attracted to the fixed core 36, and the brake plunger 37 moves toward the fixed core 36. The brake plunger 37 (more specifically, the rod 38) presses against the brake lever 27. The brake lever 27 rotates around the lever pin 28 and presses against the adjustment bolt 29. The brake arm 23 rotates around the arm pin 24 away from the brake drum 22, against the biasing force of the brake spring 30. The brake shoe 25 moves away from the brake drum 22. The lining 26 moves away from the outer surface of the brake drum 22, moving from the operating position to the released position. In this way, the braking of the rotating shaft 13 of the motor of the hoisting machine 7 is released.

[0027] When the coil 35 is energized, the detection piece 40 moves toward the fixed iron core 36 together with the brake plunger 37 and presses against the contact 48 of the brake switch 45. The switch lever 47 flexes or rotates. The switch body 46 emits an operating sound.

[0028] When the brake device 20 is in a braking state, the brake plunger 37 is in a first plunger position. When the brake device 20 is released, the brake plunger 37 is in a second plunger position. The brake plunger 37 reciprocates between the first plunger position and the second plunger position. The stroke length of the brake plunger 37, which is the distance between the first plunger position and the second plunger position, is small, for example, about 3 mm. Even with a small stroke length of the brake plunger 37, the operating point confirmation jig 50 of the brake switch 45 of this embodiment is used to enable more accurate and easier confirmation of the operating point of the brake switch 45.

[0029] (Brake switch operating point confirmation jig 50) Referring to Figures 4 and 5, the brake switch operating point confirmation jig 50 is a jig for confirming the operating point of the brake switch 45. The brake switch operating point confirmation jig 50 comprises a first arm 51, a second arm 56, and a connecting shaft 68.

[0030] The first arm 51 includes a first jaw portion 52 and a first handle portion 53. The first jaw portion 52 and the first handle portion 53 are integral. The first jaw portion 52 can contact the detection piece 40. More specifically, the end of the first jaw portion 52 can contact the second surface 42 of the detection piece 40. The end of the first jaw portion 52 may be formed by a sliding member 54. In this embodiment, the sliding member 54 is a rotating roller 55. The sliding member 54 may be a rotating sphere or a sliding film. The sliding film is formed of a resin such as polytetrafluoroethylene (PTFE) or polyetheretherketone (PEEK). The first handle portion 53 is the part of the first arm 51 that is grasped by the inspection worker.

[0031] The second arm 56 includes a second jaw portion 57 and a second handle portion 58. The second jaw portion 57 and the second handle portion 58 are integral. The end of the second jaw portion 57 is divided into two parts, and the second jaw portion 57 includes a first branch portion 59 and a second branch portion 60. The first branch portion 59 and the second branch portion 60 can support thickness gauges 70, 71 (see Figures 9 and 10, etc.). The first branch portion 59 includes a first mounting portion 59a. The first mounting portion 59a is the part of the first branch portion 59 on which the thickness gauges 70, 71 are mounted, for example, the end of the first branch portion 59. The second branch portion 60 includes a second mounting portion 60a. The second mounting portion 60a is the part of the second branch portion 60 on which the thickness gauges 70, 71 are mounted, for example, the end of the second branch portion 60. The first branch 59 and the second branch 60 are separated from each other in the axial direction of the connecting shaft 68. The second handle portion 58 is the part of the second arm 56 that is grasped by the inspection worker.

[0032] The connecting shaft 68 rotatably connects the first arm 51 and the second arm 56 to each other. By operating the first handle portion 53 and the second handle portion 58, the first arm 51 and the second arm 56 rotate around the connecting shaft 68, causing the first jaw portion 52 and the second jaw portion 57 to open and close.

[0033] (How to check the operating point of brake switch 45) Referring to Figures 6 to 16, the method for confirming the operating point of the brake switch 45 in this embodiment using the brake switch operating point confirmation jig 50 will be described. Below, as an example, a method for confirming the operating point of the brake switch 45 when the brake device 20 is in a braking state will be described.

[0034] Referring to Figure 6, the method for confirming the operating point of the brake switch 45 in this embodiment comprises confirming the operation of the brake switch 45 using a first thickness gauge (thickness gauge 70) (step S1) and confirming the operation of the brake switch 45 using a second thickness gauge (thickness gauge 71) (step S2). The thickness of the thickness gauge 71 is different from the thickness of the thickness gauge 70. For example, the thickness of the thickness gauge 71 is greater than the thickness of the thickness gauge 70.

[0035] Step S1 (see Figure 6) will be explained with reference to Figures 7 and 9 through 16.

[0036] Referring to Figures 7, 9, and 10, the thickness gauge 70 is supported by the first branch 59 and the second branch 60 (step S11). Specifically, the inspection worker operates the first handle 53 and the second handle 58 to open the first jaw 52 and the second jaw 57. The inspection worker places the thickness gauge 70 on the first mounting section 59a and the second mounting section 60a.

[0037] Referring to Figures 7 and 11 to 14, the detection piece 40 and the thickness gauge 70 are gripped by the first jaw portion 52, the first branch portion 59, and the second branch portion 60 (step S12).

[0038] For example, referring to Figures 11 and 12, the inspection worker moves the brake switch operating point confirmation jig 50 with the first jaw portion 52 and the second jaw portion 57 open to bring the thickness gauge 70 into contact with the first surface 41 of the detection piece 40. The thickness gauge 70 is initially in a position between, for example, the gap G between the detection piece 40 and the contact element 48 and the brake plunger 37 (specifically, the rod 38).

[0039] Referring to Figures 13 and 14, the inspection worker operates the first handle portion 53 and the second handle portion 58 to close the first jaw portion 52 and the second jaw portion 57. The first jaw portion 52 (more specifically, the end of the first jaw portion 52) contacts the second surface 42 of the detection piece 40. The sliding member 54 contacts the second surface 42. In this way, the detection piece 40 and the thickness gauge 70 are held between the first jaw portion 52 and the first branch portion 59 and the second branch portion 60. The thickness gauge 70 is in its initial position between the gap G and the brake plunger 37 (specifically, the rod 38). As shown in Figure 14, when the thickness gauge 70 is in its initial position, in a plan view of the second surface 42 of the detection piece 40, the first mounting portion 59a and the second mounting portion 60a overlap the detection piece 40.

[0040] Referring to Figures 7, 15, and 16, the detection piece 40 and the thickness gauge 70 are held between the first jaw portion 52, the first branch portion 59, and the second branch portion 60, and the thickness gauge 70 is moved along the first surface 41 of the detection piece 40 so that the thickness gauge 70 crosses the gap G between the detection piece 40 and the contact element 48 (step S13).

[0041] Specifically, the inspection worker moves the brake switch operating point confirmation jig 50 along the first surface 41 in a direction away from the brake plunger 37 (specifically, the rod 38) while keeping the first jaw portion 52 and the second jaw portion 57 closed. The thickness gauge 70 moves from its initial position away from the brake plunger 37 and crosses the gap G between the detection piece 40 and the contact 48. While the brake switch operating point confirmation jig 50 is being moved along the first surface 41, the thickness gauge 70 is sliding along the first surface 41 and the sliding member 54 is sliding along the second surface 42. As shown in Figure 16, when the thickness gauge 70 crosses the gap G, in a plan view of the second surface 42 of the detection piece 40, the first mounting portion 59a and the second mounting portion 60a overlap the detection piece 40.

[0042] Referring to Figure 7, check whether the brake switch 45 reacts when the thickness gauge 70 crosses the gap G (step S14). For example, the inspection worker checks whether the brake switch 45 reacts based on the sound of operation from the switch body 46 of the brake switch 45. Specifically, if the thickness gauge 70 does not come into contact with the contact 48 when it crosses the gap G, the switch body 46 will not emit an operating sound. Conversely, if the thickness gauge 70 comes into contact with the contact 48 when it crosses the gap G, the switch body 46 will emit an operating sound.

[0043] If the brake switch 45 does not react, it is determined that the operating point of the brake switch 45 is located at a distance greater than the thickness of the thickness gauge 70 from the first surface 41 of the detection piece 40. If the brake switch 45 reacts, it is determined that the operating point of the brake switch 45 is located at a distance less than or equal to the thickness of the thickness gauge 70 from the first surface 41 of the detection piece 40.

[0044] Step S2 (see Figure 6) will be explained with reference to Figures 8 and 9 through 16. Step S2 is similar to Step S1, but in Step S2, a thickness gauge 71 is used instead of a thickness gauge 70.

[0045] Referring to Figures 8, 9, and 10, the thickness gauge 71 is supported by the first branch 59 and the second branch 60 (step S21). Specifically, the inspection worker operates the first handle 53 and the second handle 58 to open the first jaw 52 and the second jaw 57. The inspection worker places the thickness gauge 71 on the first mounting section 59a and the second mounting section 60a.

[0046] Referring to Figures 8 and 11 to 14, the detection piece 40 and the thickness gauge 71 are gripped by the first jaw portion 52, the first branch portion 59, and the second branch portion 60 (step S22).

[0047] For example, referring to Figures 11 and 12, the inspection worker moves the brake switch operating point confirmation jig 50 with the first jaw portion 52 and the second jaw portion 57 open to bring the thickness gauge 71 into contact with the first surface 41 of the detection piece 40. The thickness gauge 71 is initially in a position between, for example, the gap G and the brake plunger 37 (specifically, the rod 38).

[0048] Referring to Figures 13 and 14, the inspection worker operates the first handle portion 53 and the second handle portion 58 to close the first jaw portion 52 and the second jaw portion 57. The first jaw portion 52 (more specifically, the end of the first jaw portion 52) contacts the second surface 42 of the detection piece 40. The sliding member 54 contacts the second surface 42. In this way, the detection piece 40 and the thickness gauge 71 are held between the first jaw portion 52 and the first branch portion 59 and the second branch portion 60. The thickness gauge 71 is in its initial position between the gap G and the brake plunger 37 (specifically, the rod 38). As shown in Figure 14, when the thickness gauge 71 is in its initial position, in a plan view of the second surface 42 of the detection piece 40, the first mounting portion 59a and the second mounting portion 60a overlap the detection piece 40.

[0049] Referring to Figures 8, 15, and 16, the detection piece 40 and the thickness gauge 71 are held between the first jaw portion 52, the first branch portion 59, and the second branch portion 60, and the thickness gauge 71 is moved along the first surface 41 of the detection piece 40 so that the thickness gauge 71 crosses the gap G between the detection piece 40 and the contact element 48 (step S23).

[0050] Specifically, the inspection worker moves the brake switch operating point confirmation jig 50 along the first surface 41 in a direction away from the brake plunger 37 (specifically, the rod 38) while keeping the first jaw portion 52 and the second jaw portion 57 closed. The thickness gauge 71 moves from its initial position away from the brake plunger 37 and crosses the gap G between the detection piece 40 and the contact 48. While the brake switch operating point confirmation jig 50 is being moved along the first surface 41, the thickness gauge 71 is sliding along the first surface 41 and the sliding member 54 is sliding along the second surface 42. As shown in Figure 16, when the thickness gauge 71 crosses the gap G, in a plan view of the second surface 42 of the detection piece 40, the first mounting portion 59a and the second mounting portion 60a overlap the detection piece 40.

[0051] Referring to Figure 8, check whether the brake switch 45 reacts when the thickness gauge 71 crosses the gap G (step S24). For example, the inspection worker checks whether the brake switch 45 reacts based on the sound of operation from the switch body 46 of the brake switch 45. Specifically, if the thickness gauge 71 does not come into contact with the contact 48 when it crosses the gap G, the switch body 46 will not emit an operating sound. Conversely, if the thickness gauge 71 comes into contact with the contact 48 when it crosses the gap G, the switch body 46 will emit an operating sound.

[0052] If the brake switch 45 does not react, it is determined that the operating point of the brake switch 45 is at a distance greater than the thickness of the thickness gauge 71 from the first surface 41 of the detection piece 40. If the brake switch 45 reacts, it is determined that the operating point of the brake switch 45 is at a distance less than or equal to the thickness of the thickness gauge 71 from the first surface 41 of the detection piece 40.

[0053] If the brake switch 45 does not react when using the thickness gauge 70, but does react when using the thickness gauge 71, then the brake plunger 37 is in the correct position relative to the contact 48 of the brake switch 45, and the operating point of the brake switch 45 is deemed to be correct.

[0054] Conversely, if the brake switch 45 reacts when the thickness gauge 70 is used, the gap G between the detection piece 40 and the contact element 48 of the brake switch 45 may be too narrow, potentially causing the brake device 20 to malfunction. Also, if the brake switch 45 does not react when the thickness gauge 71 is used, the gap G may be too large, resulting in a greater impact on the brake plunger 37 during braking by the brake device 20, and a louder operating noise from the brake device 20.

[0055] Therefore, if the brake switch 45 reacts when using the thickness gauge 70, or if the brake switch 45 does not react when using the thickness gauge 71, it is determined that the brake plunger 37 is in an inappropriate position relative to the contact 48 of the brake switch 45, and the operating point of the brake switch 45 is inappropriate. The inspection worker adjusts the brake device 20 so that the operating point of the brake switch 45 is appropriate, that is, so that the brake plunger 37 is in an appropriate position relative to the contact 48 of the brake switch 45.

[0056] (modified version) Referring to Figure 17, in the first modified example of this embodiment, the second jaw portion 57 includes a positioning portion 61 that can position the thickness gauges 70, 71 relative to the second jaw portion 57 (more specifically, the first branch portion 59 and the second branch portion 60). The positioning portion 61 is, for example, a recess 62 provided in the first branch portion 59 (specifically, the first mounting portion 59a) and the second branch portion 60 (specifically, the second mounting portion 60a). The thickness gauges 70, 71 include projections 72 that protrude from the back surface of the thickness gauges 70, 71. The projections 72 fit into the recesses 62. The thickness gauges 70, 71 are positioned relative to the second jaw portion 57 by the positioning portion 61.

[0057] Referring to Figure 18, in a second modification of this embodiment, the brake switch operating point confirmation jig 50 further comprises a cushioning material 63. The cushioning material 63 is arranged on the first mounting portion 59a and the second mounting portion 60a. The first branch portion 59 and the second branch portion 60 support the thickness gauges 70 and 71 via the cushioning material 63. The thickness gauges 70 and 71 are in contact with the cushioning material 63. The cushioning material 63 may be provided with through holes 64. The projections 72 of the thickness gauges 70 and 71 may be fitted into the recesses 62 and the through holes 64.

[0058] Referring to Figure 19, in a third modification of this embodiment, the brake switch operating point confirmation jig 50 further comprises a biasing member 66. The biasing member 66 biases at least one of the first arm 51 or the second arm 56 so that the first jaw portion 52 and the second jaw portion 57 close together. The biasing member 66 is, for example, a spring.

[0059] In the third modified example of this embodiment, the first jaw portion 52 and the first handle portion 53 are integral, and the second jaw portion 57 and the second handle portion 58 are integral. However, referring to Figures 4 and 19, the positions of the first handle portion 53 and the second handle portion 58 in the third modified example of this embodiment are swapped with the positions of the first handle portion 53 and the second handle portion 58 in the embodiment. The biasing member 66 is connected to the first handle portion 53 and the second handle portion 58. The biasing member 66 biases at least one of the first handle portion 53 or the second handle portion 58 so that they move away from each other. As a result, at least one of the first arm 51 or the second arm 56 is biased so that the first jaw portion 52 and the second jaw portion 57 close together.

[0060] The effects of the brake switch operating point confirmation jig 50 and the brake switch 45 operating point confirmation method of this embodiment will be explained.

[0061] The brake switch operating point confirmation jig 50 of this embodiment comprises a first arm 51, a second arm 56, and a connecting shaft 68 that rotatably connects the first arm 51 and the second arm 56 to each other. The first arm 51 includes a first jaw portion 52 that can contact the detection piece 40. The elevator includes a hoisting machine 7, a brake device 20 that brakes the hoisting machine 7, and a brake switch 45 that detects the operating state of the brake device 20. The brake device 20 includes the detection piece 40. The brake switch 45 includes a contactor 48. The contactor 48 is positioned opposite the detection piece 40. The second arm 56 includes a second jaw portion 57. The second jaw portion 57 includes a first branch portion 59 and a second branch portion 60 that can support thickness gauges 70, 71. The first branch portion 59 and the second branch portion 60 are spaced apart from each other in the axial direction of the connecting shaft 68.

[0062] The thickness gauges 70 and 71 are supported by the first branch 59 and the second branch 60. The thickness gauges 70 and 71 are moved along the detection piece 40 while being held between the detection piece 40 and the first jaw 52, ​​the first branch 59, and the second branch 60. As a result, the thickness gauges 70 and 71 can be easily moved without tilting relative to the detection piece 40 and without interfering with the contact 48. The operating point of the brake switch 45 can be confirmed with greater accuracy and ease.

[0063] In the brake switch operating point confirmation jig 50 of this embodiment, the end of the first jaw portion 52 is formed by a sliding member 54 that can contact the detection piece 40.

[0064] Therefore, when moving the thickness gauges 70 and 71 using the brake switch operating point confirmation jig 50, the movement of the thickness gauges 70 and 71 becomes easier. The operating point of the brake switch 45 can be confirmed with greater precision and more easily.

[0065] In the brake switch operating point confirmation jig 50 of this embodiment, the sliding member 54 is a rotating roller 55, a rotating sphere, or a sliding film.

[0066] Therefore, when moving the thickness gauges 70 and 71 using the brake switch operating point confirmation jig 50, the movement of the thickness gauges 70 and 71 becomes easier. The operating point of the brake switch 45 can be confirmed with greater precision and more easily.

[0067] In the brake switch operating point confirmation jig 50 of this embodiment, the second jaw portion 57 includes a positioning portion 61 that can position the thickness gauges 70 and 71 relative to the second jaw portion 57.

[0068] Therefore, while the thickness gauges 70 and 71 are moved along the detection piece 40 using the brake switch operating point confirmation jig 50, movement of the thickness gauges 70 and 71 relative to the second jaw portion 57 is prevented. When moving the thickness gauges 70 and 71 using the brake switch operating point confirmation jig 50, the movement of the thickness gauges 70 and 71 becomes easier. The operating point of the brake switch 45 can be confirmed with higher accuracy and more easily.

[0069] In the brake switch operating point confirmation jig 50 of this embodiment, the positioning part 61 is a recess 62.

[0070] Therefore, while the thickness gauges 70 and 71 are moved along the detection piece 40 using the brake switch operating point confirmation jig 50, movement of the thickness gauges 70 and 71 relative to the second jaw portion 57 is prevented. When moving the thickness gauges 70 and 71 using the brake switch operating point confirmation jig 50, the movement of the thickness gauges 70 and 71 becomes easier. The operating point of the brake switch 45 can be confirmed with higher accuracy and more easily.

[0071] The brake switch operating point confirmation jig 50 of this embodiment further comprises a cushioning material 63. The first branch 59 includes a first mounting portion 59a on which thickness gauges 70 and 71 are placed. The second branch 60 includes a second mounting portion 60a on which thickness gauges 70 and 71 are placed. The cushioning material 63 is arranged on the first mounting portion 59a and the second mounting portion 60a.

[0072] The thickness gauges 70 and 71 are supported by the first branch 59 and the second branch 60 via the cushioning material 63. Therefore, the thickness gauges 70 and 71 can be brought into contact with the detection piece 40 without tilting relative to the detection piece 40. The operating point of the brake switch 45 can be confirmed with greater accuracy and ease.

[0073] The brake switch operating point confirmation jig 50 of this embodiment further comprises a biasing member 66. The biasing member 66 biases at least one of the first arm 51 or the second arm 56 so that the first jaw portion 52 and the second jaw portion 57 close together.

[0074] Therefore, the inspection worker does not need to apply force to the first arm 51 and the second arm 56 in order to grip the detection piece 40 and the thickness gauges 70, 71 with the first jaw portion 52, the first branch portion 59, and the second branch portion 60. When moving the thickness gauges 70, 71 using the brake switch operating point confirmation jig 50, the movement of the thickness gauges 70, 71 becomes easier. The operating point of the brake switch 45 can be confirmed with greater accuracy and more easily.

[0075] The method for confirming the operating point of the brake switch 45 in this embodiment includes gripping the detection piece 40 and thickness gauges 70, 71 with the first jaw portion 52, the first branch portion 59, and the second branch portion 60 of the brake switch operating point confirmation jig 50 (steps S12, S22). The elevator includes a hoisting machine 7, a brake device 20 for braking the hoisting machine 7, and a brake switch 45 for detecting the operating state of the brake device 20. The brake device 20 includes a detection piece 40. The detection piece 40 has a first surface 41 and a second surface 42 opposite to the first surface 41. The brake switch 45 includes a contact 48. The contact 48 is positioned opposite the first surface 41 of the detection piece 40. The brake switch operating point confirmation jig 50 includes a first arm 51, a second arm 56, and a connecting shaft 68 that rotatably connects the first arm 51 and the second arm 56 to each other. The first arm 51 includes a first jaw portion 52. The second arm 56 includes a second jaw portion 57. The second jaw portion 57 includes a first branch portion 59 and a second branch portion 60. The first branch portion 59 and the second branch portion 60 are separated from each other in the axial direction of the connecting shaft 68. The thickness gauges 70, 71 are supported by the first branch portion 59 and the second branch portion 60 and are in contact with the first surface 41 of the detection piece 40. The first jaw portion 52 is in contact with the second surface 42 of the detection piece 40. The method for confirming the operating point of the brake switch 45 in this embodiment involves moving the thickness gauges 70 and 71 along the first surface 41 so that they cross the gap G between the detection piece 40 and the contact element 48, while the detection piece 40 and thickness gauges 70 and 71 are held between the first jaw portion 52, the first branch portion 59, and the second branch portion 60 (steps S13, S23).

[0076] The thickness gauges 70 and 71 are supported by the first branch portion 59 and the second branch portion 60. The thickness gauges 70 and 71 are moved along the first surface 41 while being held between the detection piece 40 and the first jaw portion 52, the first branch portion 59, and the second branch portion 60. As a result, the thickness gauges 70 and 71 can be easily moved without tilting relative to the detection piece 40 and without interfering with the contact 48. The operating point of the brake switch 45 can be confirmed with higher precision and more easily.

[0077] In the brake switch 45 operating point confirmation method of this embodiment, the end of the first jaw portion 52 is formed by a sliding member 54 that can contact the detection piece 40. While the thickness gauges 70 and 71 are moved along the first surface 41 using the brake switch operating point confirmation jig 50, the sliding member 54 slides along the second surface 42.

[0078] Therefore, when moving the thickness gauges 70 and 71 using the brake switch operating point confirmation jig 50, the movement of the thickness gauges 70 and 71 becomes easier. The operating point of the brake switch 45 can be confirmed with greater precision and more easily.

[0079] In the method for confirming the operating point of the brake switch 45 of this embodiment, the sliding member 54 is a rotating roller 55, a rotating sphere, or a sliding film.

[0080] Therefore, when moving the thickness gauges 70 and 71 using the brake switch operating point confirmation jig 50, the movement of the thickness gauges 70 and 71 becomes easier. The operating point of the brake switch 45 can be confirmed with greater precision and more easily.

[0081] In the method for confirming the operating point of the brake switch 45 of this embodiment, the second jaw portion 57 includes a positioning portion 61. The thickness gauges 70 and 71 are positioned relative to the second jaw portion 57 by the positioning portion 61.

[0082] Therefore, while the thickness gauges 70 and 71 are being moved along the first surface 41 using the brake switch operating point confirmation jig 50, movement of the thickness gauges 70 and 71 relative to the second jaw portion 57 is prevented. When moving the thickness gauges 70 and 71 using the brake switch operating point confirmation jig 50, the movement of the thickness gauges 70 and 71 becomes easier. The operating point of the brake switch 45 can be confirmed with greater accuracy and more easily.

[0083] In the method for confirming the operating point of the brake switch 45 in this embodiment, the positioning part 61 is a recess 62.

[0084] Therefore, while the thickness gauges 70 and 71 are being moved along the first surface 41 using the brake switch operating point confirmation jig 50, movement of the thickness gauges 70 and 71 relative to the second jaw portion 57 is prevented. When moving the thickness gauges 70 and 71 using the brake switch operating point confirmation jig 50, the movement of the thickness gauges 70 and 71 becomes easier. The operating point of the brake switch 45 can be confirmed with greater accuracy and more easily.

[0085] In the brake switch 45 operating point confirmation method of this embodiment, the first branch 59 includes a first mounting portion 59a on which thickness gauges 70 and 71 are placed. The second branch 60 includes a second mounting portion 60a on which thickness gauges 70 and 71 are placed. The brake switch operating point confirmation jig 50 further includes a cushioning material 63 placed on the first mounting portion 59a and the second mounting portion 60a. While the brake switch operating point confirmation jig 50 is moved along the first surface 41, the thickness gauges 70 and 71 are in contact with the cushioning material 63.

[0086] The thickness gauges 70 and 71 are supported by the first branch 59 and the second branch 60 via the cushioning material 63. Therefore, the thickness gauges 70 and 71 can be brought into contact with the detection piece 40 without tilting relative to the detection piece 40. The operating point of the brake switch 45 can be confirmed with greater accuracy and ease.

[0087] In the method for confirming the operating point of the brake switch 45 according to this embodiment, the brake switch operating point confirmation jig 50 further includes a biasing member 66 that biases at least one of the first arm 51 or the second arm 56 so that the first jaw portion 52 and the second jaw portion 57 close together.

[0088] Therefore, the inspection worker does not need to apply force to the first arm 51 and the second arm 56 in order to grip the detection piece 40 and the thickness gauges 70, 71 with the first jaw portion 52, the first branch portion 59, and the second branch portion 60. When moving the thickness gauges 70, 71 using the brake switch operating point confirmation jig 50, the movement of the thickness gauges 70, 71 becomes easier. The operating point of the brake switch 45 can be confirmed with greater accuracy and more easily.

[0089] In the method for confirming the operating point of the brake switch 45 of this embodiment, the first branch 59 includes a first mounting portion 59a on which the thickness gauges 70 and 71 are placed. The second branch 60 includes a second mounting portion 60a on which the thickness gauges 70 and 71 are placed. The brake device 20 further includes a brake plunger 37. The detection piece 40 is fixed to the brake plunger 37. When the detection piece 40 and the thickness gauges 70 and 71 are clamped by the first jaw portion 52, the first branch 59, and the second branch 60, the thickness gauges 70 and 71 are in an initial position between the gap G and the brake plunger 37. When moving the thickness gauges 70 and 71, they are moved away from the initial position in a direction away from the brake plunger 37. When the thickness gauges 70 and 71 are in their initial positions, in a plan view of the second surface 42 of the detection piece 40, the first mounting portion 59a and the second mounting portion 60a overlap the detection piece 40.

[0090] Therefore, when the thickness gauges 70 and 71 are in their initial positions, tilting of the thickness gauges 70 and 71 relative to the detection piece 40 is prevented. The posture of the thickness gauges 70 and 71 is stabilized. The operating point of the brake switch 45 can be confirmed with greater accuracy and ease.

[0091] In the method for confirming the operating point of the brake switch 45 of this embodiment, the first branch 59 includes a first mounting portion 59a on which the thickness gauges 70 and 71 are placed. The second branch 60 includes a second mounting portion 60a on which the thickness gauges 70 and 71 are placed. When the thickness gauges 70 and 71 cross the gap G, in a plan view of the second surface 42 of the detection piece 40, the first mounting portion 59a and the second mounting portion 60a overlap the detection piece 40.

[0092] Therefore, when the thickness gauges 70 and 71 cross the gap G, tilting of the thickness gauges 70 and 71 with respect to the detection piece 40 is prevented. The operating point of the brake switch 45 can be confirmed with greater accuracy and ease.

[0093] The various aspects of this disclosure are summarized below as an appendix. (Note 1) A jig for confirming the operating point of a brake switch, wherein the elevator includes a hoisting machine, a brake device for braking the hoisting machine, and a brake switch for detecting the operating state of the brake device, the brake device includes a detection piece, the brake switch includes a contact, the contact is positioned opposite the detection piece, and the jig is, First arm and, The second arm and The first arm and the second arm are connected by a connecting shaft that allows them to rotate relative to each other. The first arm includes a first jaw portion that can contact the detection piece, The second arm includes a second jaw portion, The second jaw portion includes a first branch and a second branch capable of supporting the thickness gauge, A jig for confirming the operating point of a brake switch, wherein the first branch and the second branch are separated from each other in the axial direction of the connecting shaft. (Note 2) The brake switch operating point confirmation jig described in Appendix 1, wherein the end of the first jaw portion is formed of a sliding member that can contact the detection piece. (Note 3) The sliding member is a rotating roller, a rotating sphere, or a sliding film, as described in Appendix 2, for the brake switch operating point confirmation jig. (Note 4) The brake switch operating point confirmation jig according to any one of the appendices 1 to 3, wherein the second jaw portion includes a positioning portion that can position the thickness gauge relative to the second jaw portion. (Note 5) The positioning portion is a recess, as described in Appendix 4, for the brake switch operating point confirmation jig. (Note 6) With additional cushioning material, The first branch portion includes a first mounting portion on which the thickness gauge is placed, The second branch portion includes a second mounting portion on which the thickness gauge is placed, The cushioning material is a jig for confirming the operating point of a brake switch as described in any of Appendix 1 to Appendix 5, which is placed on the first mounting portion and the second mounting portion. (Note 7) A brake switch operating point confirmation jig according to any one of appendices 1 to 6, further comprising a biasing member for biasing at least one of the first arm or the second arm so that the first jaw portion and the second jaw portion close together. (Note 8) The detection piece and thickness gauge are clamped by the first jaw, first branch, and second branch of the operating point confirmation jig of the brake switch, the elevator includes a hoisting machine, a brake device for braking the hoisting machine, and the brake switch for detecting the operating state of the brake device, the brake device includes the detection piece, the detection piece has a first surface and a second surface opposite to the first surface, the brake switch includes a contact, the contact is positioned opposite the first surface of the detection piece, and the jig The device includes a first arm, a second arm, and a connecting shaft that rotatably connects the first arm and the second arm, the first arm including a first jaw portion, the second arm including a second jaw portion, the second jaw portion including a first branch portion and a second branch portion, the first branch portion and the second branch portion being spaced apart from each other in the axial direction of the connecting shaft, the thickness gauge being supported by the first branch portion and the second branch portion and in contact with the first surface of the detection piece, the first jaw portion in contact with the second surface of the detection piece, A method for confirming the operating point of a brake switch, comprising: holding the detection piece and the thickness gauge between the first jaw portion, the first branch portion, and the second branch portion, and moving the thickness gauge along the first surface such that the thickness gauge crosses the gap between the detection piece and the contact. (Note 9) The end of the first jaw portion is formed of a sliding member that can contact the detection piece. The method for confirming the operating point of a brake switch as described in Appendix 8, wherein the sliding member slides on the second surface while the thickness gauge is moved along the first surface using the jig. (Note 10) The method for confirming the operating point of a brake switch as described in Appendix 9, wherein the sliding member is a rotating roller, a rotating sphere, or a sliding film. (Note 11) The second jaw portion includes a positioning portion, The method for confirming the operating point of a brake switch according to any one of appendices 8 to 10, wherein the thickness gauge is positioned relative to the second jaw portion by the positioning portion. (Note 12) The positioning portion is a recess, as described in Appendix 11, for confirming the operating point of the brake switch. (Note 13) The first branch portion includes a first mounting portion on which the thickness gauge is placed, The second branch portion includes a second mounting portion on which the thickness gauge is placed, The jig further includes cushioning material placed on the first mounting portion and the second mounting portion, The method for confirming the operating point of a brake switch according to any one of the appendices 8 to 12, wherein the thickness gauge is in contact with the cushioning material while the jig is being moved along the first surface. (Note 14) The method for confirming the operating point of a brake switch according to any one of appendices 8 to 13, further comprising a biasing member that biases at least one of the first arm or the second arm so that the first jaw portion and the second jaw portion close together. (Note 15) The first branch portion includes a first mounting portion on which the thickness gauge is placed, The second branch portion includes a second mounting portion on which the thickness gauge is placed, The brake device further includes a brake plunger, The detection piece is fixed to the brake plunger, When the detection piece and the thickness gauge are gripped by the first arm and the second arm, the thickness gauge is initially in the position between the gap and the brake plunger. When moving the thickness gauge, the thickness gauge is moved in a direction away from the brake plunger from the initial position. A method for confirming the operating point of a brake switch according to any one of the appendices 8 to 12, wherein when the thickness gauge is in the initial position, in a plan view of the second surface of the detection piece, the first mounting portion and the second mounting portion overlap the detection piece. (Note 16) The first branch portion includes a first mounting portion on which the thickness gauge is placed, The second branch portion includes a second mounting portion on which the thickness gauge is placed, A method for confirming the operating point of a brake switch according to any one of the appendices 8 to 12, wherein, when the thickness gauge crosses the gap, in a plan view of the second surface of the detection piece, the first mounting portion and the second mounting portion overlap the detection piece.

[0094] The embodiments and variations thereof disclosed herein should be considered in all respects to be illustrative and not restrictive. To the extent that they do not contradict each other, at least two of the embodiments and variations thereof disclosed herein may be combined. The scope of this disclosure is indicated by the claims rather than the foregoing description and is intended to include all modifications within the meaning and scope equivalent to the claims. [Explanation of symbols]

[0095] 1 Elevator, 2 Machine room, 3 Hoistway, 4 Car, 5 Counterweight, 6 Main rope, 7 Hoisting machine, 8 Sheave, 9 Deflection wheel, 10 Landing, 11,12 Guide rail, 13 Rotating shaft, 20 Brake device, 21 Brake frame, 22 Brake drum, 23 Brake arm, 24 Arm pin, 25 Brake shoe, 26 Lining, 27 Brake lever, 28 Lever pin, 29 Adjustment bolt, 30 Brake spring, 33 Brake release device, 34 Frame, 35 Coil, 36 Fixed core, 37 Brake plunger, 38 Rod, 39 Movable core, 40 Detection piece, 41 First surface, 42 Second surface, 45 Brake switch, 46 Switch body, 47 Switch lever, 48 Contact, 50 Operating point confirmation jig, 51 First arm, 52 53 First jaw section, 54 First handle section, 55 Sliding member, 56 Rotating roller, 57 Second jaw section, 58 Second handle section, 59 First branch section, 59a First mounting section, 60 Second branch section, 60a Second mounting section, 61 Positioning section, 62 Recess, 63 Cushioning material, 64 Through hole, 66 Biasing member, 68 Connecting shaft, 70, 71 Thickness gauge, 72 Projection.

Claims

1. A jig for confirming the operating point of a brake switch, wherein the elevator includes a hoisting machine, a brake device for braking the hoisting machine, and a brake switch for detecting the operating state of the brake device, the brake device includes a detection piece, the brake switch includes a contact, the contact is positioned opposite the detection piece, and the jig is, First arm and The second arm and The first arm and the second arm are connected by a connecting shaft that allows them to rotate relative to each other. The first arm includes a first jaw portion that can contact the detection piece, The second arm includes a second jaw portion, The second jaw portion includes a first branch and a second branch capable of supporting a thickness gauge. A jig for confirming the operating point of a brake switch, wherein the first branch and the second branch are separated from each other in the axial direction of the connecting shaft.

2. The brake switch operating point confirmation jig according to claim 1, wherein the end of the first jaw portion is formed of a sliding member that can contact the detection piece.

3. The brake switch operating point confirmation jig according to claim 2, wherein the sliding member is a rotating roller, a rotating sphere, or a sliding film.

4. The brake switch operating point confirmation jig according to any one of claims 1 to 3, wherein the second jaw portion includes a positioning portion capable of positioning the thickness gauge relative to the second jaw portion.

5. The positioning portion is a recess, as described in claim 4, for confirming the operating point of a brake switch.

6. With additional cushioning material, The first branch portion includes a first mounting portion on which the thickness gauge is placed, The second branch portion includes a second mounting portion on which the thickness gauge is placed, The brake switch operating point confirmation jig according to any one of claims 1 to 3, wherein the cushioning material is arranged on the first mounting portion and the second mounting portion.

7. The brake switch operating point confirmation jig according to any one of claims 1 to 3, further comprising a biasing member for biasing at least one of the first arm or the second arm so that the first jaw portion and the second jaw portion close together.

8. The detection piece and thickness gauge are clamped by the first jaw, first branch, and second branch of the operating point confirmation jig of the brake switch, the elevator includes a hoisting machine, a brake device for braking the hoisting machine, and the brake switch for detecting the operating state of the brake device, the brake device includes the detection piece, the detection piece has a first surface and a second surface opposite to the first surface, the brake switch includes a contact, the contact is positioned opposite the first surface of the detection piece, and the jig The device includes a first arm, a second arm, and a connecting shaft that rotatably connects the first arm and the second arm, the first arm including a first jaw portion, the second arm including a second jaw portion, the second jaw portion including a first branch portion and a second branch portion, the first branch portion and the second branch portion being spaced apart from each other in the axial direction of the connecting shaft, the thickness gauge being supported by the first branch portion and the second branch portion and in contact with the first surface of the detection piece, the first jaw portion in contact with the second surface of the detection piece, A method for confirming the operating point of a brake switch, comprising: holding the detection piece and the thickness gauge between the first jaw portion, the first branch portion, and the second branch portion, and moving the thickness gauge along the first surface such that the thickness gauge crosses the gap between the detection piece and the contact.

9. The end of the first jaw portion is formed of a sliding member that can contact the detection piece, The method for confirming the operating point of a brake switch according to claim 8, wherein the sliding member slides along the second surface while the thickness gauge is moved along the first surface using the jig.

10. The method for confirming the operating point of a brake switch according to claim 9, wherein the sliding member is a rotating roller, a rotating sphere, or a sliding film.

11. The second jaw portion includes a positioning portion, The method for confirming the operating point of a brake switch according to any one of claims 8 to 10, wherein the thickness gauge is positioned relative to the second jaw portion by the positioning portion.

12. The method for confirming the operating point of a brake switch according to claim 11, wherein the positioning portion is a recess.

13. The first branch portion includes a first mounting portion on which the thickness gauge is placed, The second branch portion includes a second mounting portion on which the thickness gauge is placed, The jig further includes cushioning material placed on the first mounting portion and the second mounting portion, The method for confirming the operating point of a brake switch according to any one of claims 8 to 10, wherein the thickness gauge is in contact with the cushioning material while the jig is being moved along the first surface.

14. The method for confirming the operating point of a brake switch according to any one of claims 8 to 10, wherein the jig further includes a biasing member that biases at least one of the first arm or the second arm so that the first jaw portion and the second jaw portion close together.

15. The first branch portion includes a first mounting portion on which the thickness gauge is placed, The second branch portion includes a second mounting portion on which the thickness gauge is placed, The brake device further includes a brake plunger, The detection piece is fixed to the brake plunger, When the detection piece and the thickness gauge are clamped by the first arm and the second arm, the thickness gauge is initially in the position between the gap and the brake plunger. When moving the thickness gauge, the thickness gauge is moved in a direction away from the brake plunger from the initial position. A method for confirming the operating point of a brake switch according to any one of claims 8 to 10, wherein when the thickness gauge is in the initial position, in a plan view of the second surface of the detection piece, the first mounting portion and the second mounting portion overlap the detection piece.

16. The first branch portion includes a first mounting portion on which the thickness gauge is placed, The second branch portion includes a second mounting portion on which the thickness gauge is placed, A method for confirming the operating point of a brake switch according to any one of claims 8 to 10, wherein when the thickness gauge crosses the gap, in a plan view of the second surface of the detection piece, the first mounting portion and the second mounting portion overlap the detection piece.

Images