Locking device and fixture

Abstract

To provide a locking device that can easily adapt to changes in user preference and usability, while improving design.SOLUTION: A locking device 6 comprises a pedestal part 7 and a knob part 8 detachably attached to the pedestal part 7, and the knob part 8 is arranged covering the pedestal part 7 in a front view.SELECTED DRAWING: Figure 8

Description

Technical Field

[0001] The present disclosure relates to a locking device and a fitting.

Background Art

[0002] Conventionally, a thumb turn (locking device) including a base and a knob portion attached to the base has been known (see, for example, Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the thumb turn described in Patent Document 1, since the base disposed on the back side of the knob portion is visible in a front view when the knob portion is attached to the base, there is room for improvement in design. Further, since the knob portion is fixedly attached to the base, it is necessary to continue using it as it is even when there are changes in user preferences or usability. Therefore, there is a demand for a thumb turn (locking device) that can easily cope with changes in user preferences and usability while improving the design.

[0005] An object of the present disclosure is to provide a locking device that can easily cope with changes in user preferences and usability while improving the design.

Means for Solving the Problems

[0006] The present disclosure relates to a locking device including a base portion and a knob portion detachably attached to the base portion, wherein the knob portion is disposed so as to cover the base portion in a front view.

Brief Description of the Drawings

[0007]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Figure 11

MODE FOR CARRYING OUT THE INVENTION

[0008] Hereinafter, a first embodiment of a fitting 1 including a thumb turn 6 (locking device) as a locking device of the present disclosure will be described in detail with reference to the drawings. In the following description, the width direction of the door 3 of the fitting 1 is referred to as the "width direction", the leading end side of the door 3 is referred to as the "leading end side", the hanging end side which is the side opposite to the leading end side of the door 3 is referred to as the "hanging end side", the depth direction of the door 3 in the closed state, which is the indoor-outdoor direction, is referred to as the "depth direction" or the "indoor-outdoor direction (prospective direction)", and the longitudinal direction of the door 3 is referred to as the "vertical direction" for explanation.

[0009] As shown in FIGS. 1 and 2, the fitting 1 includes a frame body 2 fixed to a building, and a door 3 (door body, opening / closing door) disposed within the frame body 2 so as to be openable and closable. The frame body 2 is formed into a rectangular frame by an upper frame 21, a lower frame 22, a vertical frame 23 on the hanging side, and a vertical frame 24 on the door tip side.

[0010] The door 3 is a hinged door that can rotate about a rotating shaft provided on the vertical frame 23 on the hanging side to open and close. The door 3 is installed in a so-called outward-opening manner, rotating from the closed state toward the outdoor side.

[0011] The door 3 is formed in a plate shape having a thickness in the indoor-outdoor direction, and is formed in a rectangular shape having a width in the left-right direction and extending in the up-down direction. As shown in FIG. 1, an indoor handle 28 is provided on the indoor surface of the door 3. As shown in FIG. 2, an outdoor handle 27 is provided on the outdoor surface of the door 3. Two locking mechanisms 5 are provided on the indoor surface of the door 3, spaced apart vertically. Note that the arrangement and number of the locking mechanisms 5 are not limited to this, and three or more locking mechanisms 5 may be provided.

[0012] As shown in FIGS. 1 and 2, the two locking mechanisms 5 are provided at the door tip side end of the door 3, spaced apart vertically. Each of the locking mechanisms 5 includes a lock body 51, a cylinder portion 52, and a thumb turn 6 (locking device). The lock body 51, the cylinder portion 52, and the thumb turn 6 are provided on the door 3.

[0013] The cylinder portion 52 is formed in a columnar shape extending in the indoor-outdoor direction of the fitting 1. As shown in FIG. 2, the keyhole 521 of the cylinder portion 52 is exposed to the outside on the outdoor side. When the user inserts a key into the keyhole 521 of the cylinder portion 52 to lock and unlock, the user inserts the key into the keyhole 521 of the cylinder portion 52 from the outdoor side and performs a rotation operation of the cylinder portion 52, thereby performing a locking and unlocking operation of the sickle portion 511 of the lock body 51.

[0014] As shown in Fig. 1, the thumb turn 6 is provided to protrude indoors from the indoor surface of the door 3 and is disposed to be exposed on the indoor side of the door 3. The thumb turn 6 is rotatably provided with respect to the lock body 51. When locking and unlocking are performed by the thumb turn 6, from the indoor side, the user rotates the thumb turn 6, and the locking and unlocking operations of the sickle portion 511 of the lock body 51 are performed. Details of the thumb turn 6 will be described later.

[0015] The sickle portion 511 is provided so as to be able to protrude and retract from the side end surface of the door 3 to the vertical frame 24 on the door tip side of the frame body 2. The sickle portion 511 is formed in a sickle shape with the tip protruding downward when locked. The sickle portion 511 can be engaged with the lock receiving portion 241 of the vertical frame 24 on the door tip side of the frame body 2.

[0016] The sickle portion 511 is configured to be movable between a position where the sickle portion 511 protrudes and engages with the lock receiving portion 241 of the vertical frame 24 on the door tip side of the frame body 2 to be locked when the user who opens and closes the door 3 rotates the keyhole 521 of the cylinder portion 52 from the outdoor side or rotates the thumb turn 6 from the indoor side, and a position where the engagement of the sickle portion 511 is disengaged from the lock receiving portion 241 of the vertical frame 24 on the door tip side of the frame body 2 to be unlocked.

[0017] Details of the thumb turn 6 will be described. As shown in Figs. 1 and 3, the thumb turn 6 is provided to protrude indoors from the door 3. As shown in Fig. 4, the thumb turn 6 is rotatable between a locked position (the left rotation position in Fig. 4) and an unlocked position (the right rotation position in Fig. 4).

[0018] The locked position (the left rotation position in Fig. 4) of the thumb turn 6 is a position where the display window 811 (described later) of the operation knob portion 8 is located at the upper vertex and the first display portion 721a (described later) is displayed on the display window 811. The unlocked position (the right rotation position in Fig. 4) of the thumb turn 6 is a position where the display window 811 rotates 90° counterclockwise from the locked position where the display window 811 of the operation knob portion 8 is located at the upper vertex, and the second display portion 721b (described later) is displayed on the display window 811.

[0019] As shown in FIGS. 5 to 7, the thumb turn 6 includes a pedestal portion 7 and an operation knob portion 8 (knob portion). The operation knob portion 8 is detachably attached to the pedestal portion 7. The pedestal portion 7 has a door-side pedestal portion 71, a knob-side pedestal portion 72, and a pedestal connection shaft portion 73. The operation knob portion 8 is arranged to cover the pedestal portion 7 when viewed from the front from the indoor side.

[0020] The door-side pedestal portion 71 is formed in a disk shape having a thickness in the indoor-outdoor direction and is fixed to the indoor-side surface of the door 3. A central through hole 711 penetrating in the thickness direction is formed at the center of the diameter of the door-side pedestal portion 71.

[0021] The knob-side pedestal portion 72 is formed in a short cylindrical shape having a top plate 721 and a peripheral wall portion 722 rising from the outer peripheral edge of the top plate 721 toward the door 3 side. The knob-side pedestal portion 72 is arranged to cover the door-side pedestal portion 71 on the indoor side of the door-side pedestal portion 71. The door-side pedestal portion 71 is arranged inside the knob-side pedestal portion 72. A central through hole 723 penetrating in the thickness direction is formed at the center of the diameter of the knob-side pedestal portion 72.

[0022] On the indoor-side surface of the top plate 721 of the knob-side pedestal portion 72, as shown in FIG. 5, a first display portion 721a is formed at the upper top portion, and a second display portion 721b is formed at a position rotated 90° counterclockwise from the first display portion 721a. The first display portion 721a and the second display portion 721b display the locking position (the position in the left figure of FIG. 4) or the unlocking position (the position in the right figure of FIG. 4) of the thumb turn 6 through the display window 811 (described later) of the operation knob portion 8 when the operation knob portion 8 is rotated, by the display window 811 of the operation knob portion 8 rotating and moving.

[0023] As shown in FIG. 7, the door-side pedestal portion 71 and the knob-side pedestal portion 72 are fastened and fixed together to the indoor-side plate 31 of the door 3 by two screws 7a in a state where the door-side pedestal portion 71 arranged on the indoor-side surface of the door 3 is covered with the knob-side pedestal portion 72.

[0024] As shown in FIGS. 5 to 7, the pedestal connection shaft portion 73 is formed to extend in the indoor-outdoor direction. The pedestal connection shaft portion 73 is attached to the inner peripheral surface of the central through-hole 711 of the door-side pedestal portion 71 of the pedestal portion 7, penetrates the indoor side plate 31 of the door 3, and protrudes to the door 3 side. The pedestal connection shaft portion 73 has a pedestal-side cylindrical engagement portion 731 formed on the door-side pedestal portion 71 side of the pedestal portion 7 and a door-side engagement portion 732 formed to protrude to the door 3 side.

[0025] As shown in FIG. 7, the pedestal-side cylindrical engagement portion 731 is formed in a cylindrical shape, and a flange portion 731a protruding radially outward from the outer peripheral surface is formed at the indoor-side end of the pedestal connection shaft portion 73. The flange portion 731a of the pedestal connection shaft portion 73 is rotatably engaged with the inner peripheral surface of the central through-hole 711 of the door-side pedestal portion 71 outside the door 3.

[0026] The door-side engagement portion 732 is formed to protrude to the inner side of the door 3 and is connected to the lock connection portion 512 of the lock body 51 of the lock mechanism 5 inside the door 3. By rotating the pedestal connection shaft portion 73, the locking operation or unlocking operation of the lock mechanism 5 is performed.

[0027] As shown in FIGS. 1 and 3, the operation knob portion 8 is disposed to cover the pedestal portion 7 when viewed from the front from the indoor side inside the door 3. In the present embodiment, the operation knob portion 8 is formed, for example, in a perfect circle shape when viewed from the front from the indoor side. Note that the shape of the operation knob portion 8 when viewed from the front is not limited to a perfect circle shape. For example, it may be a shape having a curved portion such as an elliptical shape, an oval shape, or an egg shape, or a polygonal shape.

[0028] As shown in FIG. 7, the operation knob portion 8 has a front plate portion 81 disposed on the indoor-side surface, a short cylindrical peripheral wall portion 82 rising from the outer peripheral edge of the front plate portion 81 to the door 3 side, and a knob connection shaft portion 83 provided on the surface of the front plate portion 81 on the pedestal portion 7 side. The front plate portion 81 is formed in a plate shape having a thickness in the indoor-outdoor direction and is formed in a perfect circle shape when viewed from the front from the indoor side.

[0029] As shown in Fig. 5, a display window 811 is formed in the front panel portion 81. The display window 811 can indicate the locked state or the unlocked state of the thumb turn 6 when the operation knob portion 8 is rotated and its rotational position is changed. The display window 811 is formed to penetrate the front panel portion 81 in the thickness direction at a predetermined circumferential position on the outer peripheral edge portion side away from the center of the front panel portion 81 in the radial direction, and opens in a long hole shape extending a predetermined length in the radial direction of the front panel portion 81.

[0030] As shown in Fig. 4, by the rotational operation of the operation knob portion 8, for example, when the operation knob portion 8 is in the locked position, the display window 811 is located at the top of the upper part, and the first display portion 721a of the pedestal portion 7 is visible through the display window 811. By the rotational operation of the operation knob portion 8, for example, when the operation knob portion 8 is in the unlocked position, the display window 811 is located at a position rotated 90° counterclockwise from the locked position where it is located at the top of the upper part, and the second display portion 721b of the pedestal portion 7 is visible through the display window 811.

[0031] As shown in Figs. 6 and 7, the knob connection shaft portion 83 has a shaft body 831 and a pair of engaging protrusions 832. The shaft body 831 protrudes from the center of the surface of the front panel portion 81 on the side of the pedestal portion 7 toward the door 3 side. The pair of engaging protrusions 832 each protrude outward in the radial direction at the end portion side of the shaft body 831 on the side of the pedestal portion 7. The pair of engaging protrusions 832 are detachably engaged with the inner surface 731b of the pedestal-side cylindrical engaging portion 731 of the pedestal connection shaft portion 73 of the pedestal portion 7 when the operation knob portion 8 is detached from and attached to the pedestal connection shaft portion 73 of the pedestal portion 7.

[0032] In the thumb turn 6 of the present embodiment, as shown in Fig. 8, by replacing the operation knob portion 8 with an operation knob portion 9 having a different external shape from that of the operation knob portion 8, it is possible to change to the thumb turn 6A shown in Fig. 9 having a different external shape.

[0033] As shown in Figs. 8 and 9, the operation knob portion 9 is arranged to cover the pedestal portion 7 on the indoor side of the door 3 in the same manner as the aforementioned operation knob portion 8. The operation knob portion 9 is formed in a square shape when viewed from the front on the indoor side.

[0034] The operation knob portion 9 has a front plate portion 91 disposed on the indoor-side surface, a short cylindrical peripheral wall portion 92 rising from the outer peripheral edge of the front plate portion 91 toward the door 3 side, and a knob connection shaft portion 93 provided on the surface of the front plate portion 91 on the pedestal portion 7 side. The front plate portion 91 is formed in a plate shape having a thickness in the indoor-outdoor direction and is formed in a square shape when viewed from the front on the indoor side.

[0035] The knob connection shaft portion 93 has the same structure as the knob connection shaft portion 83 of the aforementioned operation knob portion 8, and includes a shaft body 931 and a pair of engaging protrusions 932. When the operation knob portion 9 is detached from and attached to the pedestal portion 7, the pair of engaging protrusions 932 are detachably engaged with the inner surface 731b of the pedestal-side cylindrical engaging portion 731 of the pedestal connection shaft portion 73 of the pedestal portion 7.

[0036] Thus, since the knob connection shaft portion 93 has the same structure as the knob connection shaft portion 83 of the aforementioned operation knob portion 8, the operation knob portion 8 of the thumb turn 6 has a structure that can be replaced with an operation knob portion 9 having a different external shape from that of the operation knob portion 8. Therefore, as shown in FIG. 8, the operation knob portion 8 of the thumb turn 6 can be removed from the pedestal portion 7, and another operation knob portion 9 having a different external shape from that of the operation knob portion 8 can be attached. By replacing the operation knob portion 8 of the thumb turn 6 with another operation knob portion 9 having a different external shape from that of the operation knob portion 8, the thumb turn 6 can be changed to a thumb turn 6A having a different external shape, as shown in FIG. 9.

[0037] When replacing the operation knob portion 8 of the thumb turn 6 with the operation knob portion 9, the knob attachment / detachment button 712 (see FIG. 6) provided at the lower end of the peripheral surface of the door 3-side end of the door-side pedestal portion 71 of the pedestal portion 7 is pushed radially inward, and a pair of engaging protrusions 832 (see FIGS. 6 and 7) provided on the knob connection shaft portion 83 of the operation knob portion 8 are disengaged from and engaged with the inner surface 731b (see FIGS. 5 and 7) of the pedestal-side cylindrical engaging portion 731 of the pedestal connection shaft portion 73 of the pedestal portion 7, whereby the operation knob portions 8 and 9 can be detachably attached to and detached from the pedestal portion 7.

[0038] As shown in Fig. 6, the knob attachment / detachment button 712 is formed to project radially outward from the lower end of the peripheral surface of the door 3 side end of the door side pedestal portion 71 of the pedestal portion 7. When the operation knobs 8 and 9 are attached to the pedestal portion 7, the knob attachment / detachment button 712 projects radially outward from the lower end of the peripheral surface of the door 3 side end of the door side pedestal portion 71 of the pedestal portion 7 at a height that does not protrude radially outward from the peripheral edge of the operation knobs 8 and 9, and is disposed in the gap between the rear end face of the peripheral wall portion 82 of the operation knob 8 and the door 3. The knob attachment / detachment button 712 is formed at a height that does not protrude radially outward from the peripheral edge of the operation knobs 8 and 9 when the operation knobs 8 and 9 are attached to the pedestal portion 7, and cannot be visually recognized in a front view from the indoor side, so the design property of the thumb turns 6 and 6A can be improved.

[0039] If it is difficult to press the knob attachment / detachment button 712 by hand, the operation knobs 8 and 9 may be attached and detached by inserting an operation rod, an operation key, etc. through the gap between the operation knob 8 and the door 3 to press the knob attachment / detachment button 712. In the present embodiment, the knob attachment / detachment button 712 is provided at the lower end of the peripheral surface of the door 3 side end of the door side pedestal portion 71 of the pedestal portion 7, but the present invention is not limited to this, and it may be provided on the side portion of the peripheral surface of the door side pedestal portion 71 of the pedestal portion 7.

[0040] As shown in Fig. 10, when the operation knob 8 of the thumb turn 6 is changed to a thumb turn 6A having a square shape with a different external shape from that of the operation knob 8, the thumb turn 6A can be rotated to the locked position (the rotation position on the left side in Fig. 10) and the unlocked position (the rotation position on the right side in Fig. 10) as shown in Fig. 10.

[0041] The locked position of the thumb turn 6A (the rotational position on the left side in FIG. 10) is the position where the display window 911 of the operation knob portion 9 is located at the center in the horizontal direction at the top and the first display portion 721a (described later) is displayed in the display window 911. The unlocked position of the thumb turn 6A (the rotational position on the right side in FIG. 10) is the position where the display window 911 of the operation knob portion 9 is rotated 90° counterclockwise from the locked position where the display window 911 is located at the center in the horizontal direction at the top, and the second display portion 721b is displayed in the display window 911.

[0042] According to the first embodiment, the following effects are achieved. The thumb turns 6 and 6A of this embodiment include a pedestal portion 7 and operation knob portions 8 and 9 detachably attached to the pedestal portion 7. The operation knob portions 8 and 9 are arranged to cover the pedestal portion 7 when viewed from the front. Therefore, in the front view, since the operation knob portions 8 and 9 cover the pedestal portion 7, the pedestal portion 7 cannot be seen in the front view, so the designability can be improved. Furthermore, since the operation knob portions 8 and 9 are configured to be detachable, they can be replaced with knob portions of various shapes according to the user's preference and usability.

[0043] Also, the operation knob portions 8 and 9 have display windows 811 and 911 indicating the locked position and the unlocked position. Thereby, the locked state or the unlocked state of the thumb turns 6 and 6A can be easily grasped according to the positions of the display windows 811 and 911.

[0044] Next, the thumb turn 6B of the second embodiment will be described. As shown in FIG. 11, the thumb turn 6B of the second embodiment is formed in a square shape when viewed from the front, similar to the exchanged thumb turn 6A shown in FIG. 9 in the first embodiment. On the other hand, the thumb turn 6B of the second embodiment has a structure in which the thumb turn 6A of the first embodiment switches between the locked position and the unlocked position at a rotation angle of 90° (see FIG. 10), whereas, as shown in FIG. 11, it has a structure in which the locked position and the unlocked position are switched at a rotation angle of 45°. In addition, while the display windows 811 and 911 (see FIGS. 3 and 9) are provided in the operation knob portions 8 and 9 of the thumb turns 6 and 6A of the first embodiment, the operation knob portion 9A of the thumb turn 6B of the second embodiment is not provided with a display window as shown in FIG. 11.

[0045] Similar to the thumb turns 6 and 6A of the first embodiment, the thumb turn 6B of the second embodiment has an operation knob portion 9A detachably attached to a pedestal portion (not shown). As shown in FIG. 11, the operation knob portion 9A is arranged to cover the pedestal portion when viewed from the front on the indoor side.

[0046] The locked position of the thumb turn 6B of the second embodiment (the rotational position on the left side in FIG. 11) is such that the upper and lower sides of the square-shaped operation knob portion 9A are horizontal and the two vertical sides are vertical, and both the upper two corner portions and the lower two corner portions are arranged apart in the horizontal direction (lateral direction). The unlocked position of the thumb turn 6B (the rotational position on the right side in FIG. 11) is rotated 45° counterclockwise from the position where the upper and lower sides of the square-shaped operation knob portion 9A are horizontal and the two vertical sides are vertical, and the upper side, the lower side, and the two vertical sides are inclined at 45°, and the upper corner portion is located at the upper top and the lower corner portion is located at the lower top.

[0047] In this way, the external shape of the operation knob portion 9A is configured into a shape that allows the locked state or the unlocked state to be recognized by changing the orientation of the operation knob portion 9A. Thereby, by rotating the square-shaped operation knob portion 9A 45° counterclockwise, due to the difference in the external shape of the operation knob portion 9A in the front view before and after the rotation, it is easy to visually distinguish the locked state or the unlocked state. For example, since the operation knob portion 9A is square-shaped in the front view, when the orientation of the operation knob portion 9A is changed, it is easy to distinguish by the position of the corner portions and the inclination angle of the operation knob portion 9A, so that the locked state or the unlocked state of the thumb turn 6B can be easily grasped.

[0048] Also, even when the room is dark and the operation knob portion 9A is difficult to see, or when used by a user with visual impairment, by touching the operation knob portion 9A with the hand, it is easy to distinguish the locked state or the unlocked state of the thumb turn 6B based on the position of the corner portions and the inclination angle in the shape of the operation knob portion 9A.

[0049] Also, in the thumb turn 6B of the second embodiment as well, similar to the first embodiment, by replacing the operation knob portion 9A with an operation knob portion having a different external shape, it is possible to change to a thumb turn having a different external shape in a front view.

[0050] According to the second embodiment, the following effects are achieved. In this embodiment, the operation knob portion 9A has a shape such that the locked state and the unlocked state can be understood by changing the orientation. The operation knob portion 9A is square-shaped in a front view. Therefore, when the orientation of the operation knob portion 9A is changed by rotating it, for example, by 45°, the position and inclination angle of the corner portion of the operation knob portion 9A can be easily discriminated, so that the locked state or the unlocked state of the thumb turn 6B can be easily grasped.

[0051] Also, in the second embodiment as well, similar to the first embodiment, in the thumb turn 6B, in a front view, since the operation knob portion 9A covers the pedestal portion, the pedestal portion is not visible in a front view, so that the design property can be improved. In addition, since the operation knob portion 9A is configured to be detachable, it can be replaced with knob portions of various shapes according to the user's preference and usability.

[0052] Note that the present disclosure is not limited to the above-described embodiments, and modifications, improvements, etc. within the scope that can achieve the object of the present disclosure are included in the present disclosure.

[0053] For example, in the above-described embodiment, the case where the thumb turns 6, 6A, 6B (locking devices) are provided on the door 3 has been described, but it is not limited thereto. The locking device of this embodiment can be provided on any type of openable and closable door, and for example, it may be provided on a terrace door, a ventilation door, or an openable and closable shoji.

[0054] In the above embodiment, the shape of the operation knob portion (knob portion) is configured to be a perfect circle or a square when viewed from the front. However, the shape of the operation knob portion is not limited. The shape of the operation knob portion may be, for example, an elliptical shape, an oval shape, an egg shape, or other shape having a curved portion, or may be a polygonal shape. For example, when the shape of the operation knob portion is configured to be a shape other than a perfect circle, such as an elliptical shape, an oval shape, an egg shape, or other shape having a curved portion, or a polygonal shape, the shape allows the locked position and the unlocked position to be identified when the orientation of the operation knob portion is changed, and the locked position and the unlocked position can be easily distinguished just by viewing the operation knob portion from the front.

[0055] In the first embodiment, the indicators of the operation knobs 8 and 9 (knob) are configured by the first display section or the second display section of the base section that is visible in the display window, but this is not limited thereto. For example, the indicators of the operation knobs 8 and 9 may be configured by notches or various marks (dots, lines, characters, inclined surfaces, etc.). In the embodiment, the operation knobs 8 and 9 are provided with display windows, and the first display section 721a and the second display section 721b are provided on the base section, but this is not limited thereto, and the base section may not have a display section.

[0056] In addition, the operation knob 9A of the thumb turn 6B in the second embodiment does not have an indication portion (e.g., a display window), but is not limited to this. Even if the operation knob 9A of the thumb turn 6B in the second embodiment has a shape that indicates the locked and unlocked states by changing the direction, an indication portion (e.g., a display window) may be provided on the operation knob.

[0057] Furthermore, the operation knob parts 8, 9, 9A may be replaceable with operation knob parts having different appearances, functions, etc. other than the shape. For example, the operation knob parts 8, 9, 9A may be replaceable with operation knob parts in which the peripheral wall parts 82, 92 of the operation knob parts 8, 9, 9A are knurled to prevent slipping, or may be replaceable with operation knob parts in which the front plate parts 81, 91, 91A of the operation knob parts 8, 9, 9A are mirror-finished, spin-finished, etc. [Explanation of symbols]

[0058] 1 Building tool, 6, 6A, 6B Thumb turn (locking device), 7 Base, 8, 9, 9A Operation knob part (knob part), 811, 911 Display window (indicating part)

Claims

1. a pedestal part, a knob part detachably attached to the pedestal part, and the knob part is arranged to cover the pedestal part in a front view, a locking device.

2. The locking device according to claim 1, wherein the knob part has a shape in which the locked state and the unlocked state can be recognized by changing the orientation.

3. The locking device according to claim 2, wherein the knob part has a shape having a curved part other than a polygonal shape, an elliptical shape or a perfect circular shape in a front view.

4. The locking device according to claim 1 or 2, wherein the knob part has an indicating part indicating a locking position and an unlocking position.

5. A fitting including the locking device according to claim 1 or 2.

Images