Attachment / detachment jig

Abstract

To realize a stable attaching / detaching operation with a relatively simple configuration even in a situation where a sensor is installed on an inclined ceiling, according to an operation of attaching / detaching a sensor head to / from a sensor base.SOLUTION: An attaching / detaching jig comprises a supporting rod, and a jig body part attached to one end of the supporting rod, and is used for an attaching / detaching operation of a sensor head. The attaching / detaching jig further comprises an angle adjustment mechanism part capable of adjusting an attachment angle of the jig body part to the supporting rod by connecting the supporting rod with the jig body part. The jig body part has a pawl part capable of holding the sensor head. The angle adjustment mechanism is made to be capable of fixing the attachment angle at a desired angle when the supporting rod is pushed up in an axial direction of the supporting rod in a state where the attachment angle is adjusted to the desired angle so as to hold the sensor head by the pawl part.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present disclosure relates to an attachment / detachment jig used to attach and detach a sensor head. [Background technology]

[0002] Fire detectors, such as smoke detectors, flame detectors, and heat detectors, are installed on ceilings, walls, and other surfaces at fire monitoring sites to detect smoke, flames, and heat, thereby detecting fires. These fire detectors are installed by attaching the detector head, which is the main body, to a detector base installed on the ceiling or elsewhere.

[0003] Fire detectors are designed so that the detector head can be detached from the detector base and reattached when inspecting or replacing them. Detachable devices are available that allow the detector head to be detached from the detector base even when the fire detector is installed on an inclined surface (see, for example, Patent Document 1).

[0004] In the detacher described in Patent Document 1, the detacher and adapter are connected in the form of a free angle. Specifically, an auxiliary hole is provided in the detacher, and a movable range limiting screw is tightened and passed through the movable range limiting hole in the adapter. A cushioning material such as rubber is sandwiched between the detacher and the adapter, and the detacher is connected with a detacher fixing screw to allow movement with appropriate friction.

[0005] This allows the detacher to move freely within a certain range. As a result, when working from an angle toward the installation surface, the rotation of the operating rod is converted by the adapter into a direction that rotates the detacher, allowing the detacher to rotate in both forward and reverse directions. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Japanese Patent Application Laid-Open No. 2015-60583 Summary of the Invention [Problem to be solved by the invention]

[0007] In the prior art described in Patent Document 1, a movable range limiting hole is provided to limit the range within which the detachable device can move freely, thereby realizing a configuration that allows the sensor head to be attached and detached from the sensor base even when the sensor is installed on a sloped ceiling.

[0008] However, the conventional technology disclosed in Patent Document 1 has a relatively complex structure. Furthermore, in the conventional technology disclosed in Patent Document 1, the attachment / detachment device can move freely even when the operating rod is rotated during attachment / detachment, which may cause unstable rotation operations and make attachment / detachment difficult, particularly when the sensor is installed on a high, inclined surface.

[0009] The present disclosure has been made to solve the above-mentioned problems, and aims to provide an attachment / detachment tool that has a relatively simple configuration and can achieve stable attachment / detachment work when attaching or detaching a sensor head to or from a sensor base, even when the sensor is installed on a sloped ceiling. [Means for solving the problem]

[0010] The attachment / detachment jig according to the present disclosure comprises a support rod and a jig main body attached to one end of the support rod, and is an attachment / detachment jig used for attaching and detaching a sensor head, and further comprises an angle adjustment mechanism that connects the support rod and the jig main body and enables adjustment of the attachment angle of the jig main body relative to the support rod, the jig main body having a claw portion that can hold the sensor head, and the angle adjustment mechanism enables the attachment angle to be fixed at the desired angle by pushing the support rod up in the axial direction of the support rod when the attachment angle is adjusted to the desired angle by the claw portion so that the sensor head is held. [Effects of the Invention]

[0011] According to the present disclosure, when attaching or detaching a sensor head to or from a sensor base, it is possible to obtain an attachment / detachment jig that has a relatively simple configuration and can perform stable attachment / detachment operations even when the sensor is installed on a sloped ceiling. [Brief explanation of the drawings]

[0012] [Figure 1] 1 is a diagram illustrating an overall configuration of an attachment / detachment jig according to a first embodiment of the present disclosure. [Figure 2] 3 is an explanatory diagram of a first component that is one component that configures the angle adjustment mechanism according to the first embodiment of the present disclosure. FIG. [Figure 3] 10 is an explanatory diagram of a second component which is one component that configures the angle adjustment mechanism according to the first embodiment of the present disclosure. FIG. [Figure 4] 3A to 3C are explanatory diagrams relating to the angle adjustment function and angle fixing function of the angle adjustment mechanism according to the first embodiment of the present disclosure. [Figure 5] 4A to 4C are detailed explanatory diagrams relating to the angle adjustment function and angle fixing function of the angle adjustment mechanism according to the first embodiment of the present disclosure. [Figure 6] 10A to 10C are diagrams illustrating modified examples of the shape of the second connection hole of the second component according to the first embodiment of the present disclosure. [Figure 7] 10A and 10B are diagrams illustrating modified examples of the configuration of the lower end region of the second component according to the first embodiment of the present disclosure. [Figure 8] 10 is an explanatory diagram of a support rod used in an attachment / detachment jig according to a second embodiment of the present disclosure. FIG. [Figure 9] 9 is an explanatory diagram of a support rod used in an attachment / detachment jig according to a second embodiment of the present disclosure and having a different configuration from that shown in FIG. 8. DETAILED DESCRIPTION OF THE INVENTION

[0013] Hereinafter, preferred embodiments of the attachment / detachment jig of the present disclosure will be described with reference to the drawings. The attachment / detachment jig according to the present disclosure is technically characterized by having an angle adjustment mechanism that connects the support rod and the jig body, and by having a configuration that allows the attachment angle of the jig body relative to the support rod to be adjusted to a desired angle by the angle adjustment mechanism and allows it to be fixed at the desired angle. As a result, stable attachment / detachment work can be achieved with simple operations even when the detector is installed on a sloped ceiling.

[0014] Embodiment 1 1 is a diagram showing the overall configuration of an attachment / detachment jig according to a first embodiment of the present disclosure. The attachment / detachment jig 100 according to the first embodiment includes a jig main body 20, a support rod 30, and an angle adjustment mechanism 40.

[0015] A detector 10 is installed on the ceiling surface of the fire monitoring area. The detector 10 is composed of a detector base 11 that is fixed to the ceiling surface, which is an example of an installation surface, and a detachable detector head 12.

[0016] The attachment / detachment jig 100 is a dedicated jig used when attaching / detaching the sensor head 12 to / from the sensor base 11, and is provided with an angle adjustment function and an angle fixing function as functions suitable for attaching / detaching the sensor head 12, particularly when the sensor 10 is installed on an inclined ceiling. The functions of the attachment / detachment jig 100 according to the first embodiment will now be described with reference to Figures 1(A) and 1(B).

[0017] The jig main body 20 is connected to one end of the support rod 30 via an angle adjustment mechanism 40. The jig main body 20 has claws 21 that can hold the sensor head 12. The angle adjustment mechanism 40, which connects the support rod 30 and the jig main body 20, has an angle adjustment function that makes it possible to adjust the attachment angle of the jig main body 20 relative to the support rod 30 to a desired angle, and an angle fixing function that makes it possible to fix the angle when it has been adjusted to the desired angle.

[0018] The angle adjustment mechanism 40 includes a first part 41, a second part 42, and a shaft 43. One end of the first part 41 is fixed to the jig body 20. One end of the second part 42 is fixed to the support rod 30. The other end of the first part 41 and the other end of the second part 42 are connected via the shaft 43, thereby achieving an angle adjustment function and an angle fixing function.

[0019] Fig. 1(A) is a diagram showing a state in which an attachment / detachment jig 100 is brought close to a sensor 10 in order to remove a sensor head 12 attached to a sensor base 11. Fig. 1(B) shows a state in which the claws 21 of the attachment / detachment jig 100 are aligned with the sensor 10 from the state shown in Fig. 1(A).

[0020] Specifically, Figure 1(B) shows the state in which the sensor head 12 is held by the claw portion 21 by tilting the jig main body portion 20 to the desired angle using the angle adjustment function, and the sensor head 12 is rotated and moved to a position where it can be removed by rotating the support rod while fixed at the desired angle using the angle fixing function.

[0021] The rotation angle of the jig main body 20 required to attach and detach the sensor head 12 to and from the sensor base 11 is approximately 25 to 45 degrees. Therefore, even if the attachment angle of the jig main body 20 relative to the support rod 30 is fixed at a desired angle by the angle fixing function, attachment and detachment can be easily performed by rotating the support rod 30 so that the jig main body 20 rotates by approximately 25 to 45 degrees relative to the support rod 30.

[0022] Next, a specific configuration for realizing the angle adjustment function and the angle fixing function in the angle adjustment mechanism 40 will be described in detail with reference to FIGS.

[0023] 2 is an explanatory diagram of a first component 41, which is one of the components constituting the angle adjustment mechanism 40 according to the first embodiment of the present disclosure. FIG. 2(A) is a front view of the first component 41, and FIG. 2(B) is a side view of the first component 41. The upper end of the first component 41 is integrally molded with or fixed to the jig body 20 and connected thereto. A first connection hole 41a is provided at the lower end of the first component 41.

[0024] The first connection hole 41a is formed in a circular shape. The second component 42 is formed to have a width W1, as shown in Fig. 3(B) described later.

[0025] 3A and 3B are explanatory diagrams of second component 42, which is one component constituting angle adjustment mechanism 40 according to embodiment 1 of the present disclosure. FIG. 3A is a front view of second component 42, and FIG. 3B is a side view of second component 42. A lower end of second component 42 is fixed to support rod 30. A second connection hole 42a is provided at an upper end of second component 42.

[0026] The second connection hole 42a is formed as an elongated hole extending along the axial direction DIR of the support rod 30. As shown in Fig. 3(B), the second component 42 is formed to have a generally U-shape with a space into which the first component 41 can fit.

[0027] In the substantially U-shaped space, the upper end side has a width W2 which is wider than the width W1, but the lower end region 42b has a width W3 which is narrower than the width W2 and matches the width W1.

[0028] 4A to 4C are explanatory diagrams relating to the angle adjustment function and the angle fixing function of angle adjustment mechanism 40 according to embodiment 1 of the present disclosure. In Fig. 4A to Fig. 4C, three states are shown in which first connection hole 41a provided in first component 41 and second connection hole 42a provided in second component 42 are connected via shaft 43.

[0029] 4(A) shows an initial state in which a first part 41 attached to the jig body 20 and a second part 42 attached to the support rod 30 are arranged on a straight line in the axial direction DIR of the support rod 30. The angle of the first part 41 with respect to the second part 42 in this initial state will be referred to as 0 degrees.

[0030] 4(B) shows a tilted state in which the first part 41 attached to the jig body 20 is tilted at an arbitrary angle relative to the second part 42 attached to the support rod 30. Because the first part 41 and the second part 42 are both connected via the shaft 43, the first part 41 can be rotated relative to the second part 42 to set the angle in a positive or negative direction from 0 degrees.

[0031] Figure 4(C) shows a fixed state in which the first part 41 is adjusted to the desired angle relative to the second part 42 so that the sensor head 12 can be held by the claw portion 21, and then the second part 42 is pushed up in the axial direction DIR, so that the shaft 43 is positioned at the lower end side of the second connection hole 42a and the first part 41 is fixed to the second part 42.

[0032] In this way, the angle adjustment mechanism 40 according to the first embodiment has an angle adjustment function for changing from the initial state to an inclined state, and an angle fixing function for changing from the inclined state to a fixed state.

[0033] Next, the angle adjustment function and the angle fixing function will be described in detail using cross-sectional views. Fig. 5 is a detailed explanatory diagram of the angle adjustment function and the angle fixing function by angle adjustment mechanism 40 according to embodiment 1 of the present disclosure. Fig. 5(A) shows, including cross-sectional views, a state in which first component 41 can rotate relative to second component 42 around shaft 43 in the initial state and in the tilted state.

[0034] In the initial state and the tilted state, the first component 41 does not reach the lower end region 42b in the approximately U-shaped space within the second component 42. Therefore, due to the relationship of width W1<width W2, the first component 41 can rotate around the shaft 43 relative to the second component 42, making it possible to adjust the angle.

[0035] 5(B) shows, including a cross-sectional view, a state in which the first component 41 is fixed at a desired angle relative to the second component 42 in the fixed state. As shown in FIG. 4(C), by pushing the second component 42 upward in the axial direction DIR, the first component 41 reaches the lower end region 42b in the approximately U-shaped space within the second component 42. Therefore, due to the relationship of width W1 > width W3, the first component 41 is fixed relative to the second component 42.

[0036] In addition, by sandwiching a cushioning material such as rubber between the first part 41 and the second part 42, at surfaces that come into contact with each other during rotation, the first part 41 can be made to rotate with appropriate friction relative to the second part 42, with the shaft 43 as the rotation axis.

[0037] 6A and 6B are diagrams illustrating modified examples of the shape of second connection hole 42a of second component 42 according to embodiment 1 of the present disclosure. Second connection hole 42a may be formed as second connection hole 42a1 having a simple elongated hole shape as shown in Fig. 6A, or as second connection holes 42a2 and 42a3 having portions with partially narrowed widths as shown in Fig. 6B and Fig. 6C.

[0038] 7A and 7B are diagrams illustrating modified examples of the configuration of lower end region 42b of second component 42 according to embodiment 1 of the present disclosure. Instead of forming lower end region 42b as a region simply having width W3 as shown in Fig. 7A, a component biased inward and having width W3 may be used as shown in Fig. 7C.

[0039] That is, the second component 42 is not limited to the shapes described in FIGS. 3 to 5, and various alternative configurations can be adopted as long as it can achieve the angle adjustment function and the angle fixing function.

[0040] As described above, according to Embodiment 1, by connecting the jig main body and the support rod via the angle adjustment mechanism, an attachment / detachment jig having an angle adjustment function and an angle fixing function can be realized. As a result, when attaching or detaching the sensor head to or from the sensor base, a relatively simple configuration enables stable attachment / detachment work even when the sensor is installed on an inclined installation surface, thereby reducing the workload and shortening the work time.

[0041] Furthermore, even if the installation surface is inclined and high, the angle can be adjusted and fixed to match the inclination of the installation surface, making it easy to adjust the position of the attachment / detachment jig relative to the sensor and stabilizing the rotational movement of the support rod.

[0042] Embodiment 2 In this embodiment, a configuration of the support rod 30 for reducing the workload and shortening the work time will be described.

[0043] 8 is an explanatory diagram of a support rod 30 used in an attachment / detachment jig 100 according to a second embodiment of the present disclosure. As in the first embodiment, one end of the support rod 30 is connected to the jig main body 20 via an angle adjustment mechanism 40. In the second embodiment, the other end of the support rod 30 is provided with a handle 31 that can increase the rotation radius of the support rod 30.

[0044] Fig. 8(A) shows a stored state in which the handle portion 31 is not unfolded. One longitudinal end of the handle portion 31 is attached to the support rod 30 so that it can rotate around a rotation axis 31a, and Fig. 8 shows an example in which a pair of handle portions 31 are provided.

[0045] Figure 8(B) shows the state in which the rotation radius of the support rod 30 is increased by rotating the pair of handle portions 31 counterclockwise by 90 degrees, and Figure 8(C) shows the state in which the rotation radius of the support rod 30 is increased by rotating the pair of handle portions 31 clockwise by 90 degrees.

[0046] In this way, the rotational torque required during attachment and detachment can be reduced by increasing the rotation radius as needed using the pair of handles 31. As a result, even when the jig body 20 is fixed at a desired angle relative to the support rod 30, the workload and time required for rotating the support rod 30 during attachment and detachment of the sensor head 12 can be reduced.

[0047] Fig. 9 is an explanatory diagram of a support rod 30 used in an attachment / detachment jig 100 according to a second embodiment of the present disclosure, and having a configuration different from that shown in Fig. 8. Fig. 8 above illustrates a case in which each of a pair of handle portions 31 is attached to the support rod 30 at one end in the longitudinal direction. In contrast, in Fig. 9, the handle portion 32 is attached to the support rod 30 at the center in the longitudinal direction.

[0048] 9(A) shows the storage state in which the handle portion 32 is not unfolded. The handle portion 32 is attached at its longitudinal center to the support rod 30 so that it can rotate around a rotation axis 32a, and FIG. 9 shows an example in which a single handle portion 32 is provided.

[0049] 9(B) shows a state in which the handle portion 32 is rotated 90 degrees to increase the turning radius of the support rod 30. The handle portion 32 shown in FIG. 9 can also achieve the same effect as the handle portion 31 shown in FIG.

[0050] As described above, according to the second embodiment, a handle that can increase the rotation radius of the support rod is provided on the other end of the support rod. As a result, in addition to the effects of the first embodiment, it is possible to reduce the workload and shorten the operation time when rotating the support rod. [Explanation of symbols]

[0051] 10 Sensor, 11 Sensor base, 12 Sensor head, 20 Jig main body, 21 Claw portion, 30 Support rod, 31 Handle portion, 31a Rotation axis, 32 Handle portion, 32a Rotation axis, 40 Angle adjustment mechanism portion, 41 First part, 41a First connection hole, 42b Lower end region, 42 Second part, 42a, 42a1, 42a2, 42a3 Second connection hole, 43 Shaft, 100 Attachment / detachment jig.

Claims

1. A support rod; a jig body attached to one end of the support rod; An attachment / detachment jig used for attaching and detaching a sensor head, comprising: an angle adjustment mechanism that connects the support rod and the jig body and enables adjustment of an attachment angle of the jig body with respect to the support rod; the jig body has a claw portion capable of holding the sensor head, The angle adjustment mechanism is In a state where the mounting angle is adjusted to a desired angle so that the sensor head is held by the claw portion, the support rod is pushed up in the axial direction of the support rod, thereby making it possible to fix the mounting angle at the desired angle. Attachment / detachment jig.

2. The support rod has a handle portion attached to the other end thereof, which can increase the rotation radius of the support rod. The attachment / detachment jig according to claim 1 .

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