TWI649017B - Clamping installation structure and electric appliance having the same - Google Patents

Abstract

An object of the present invention is to provide a clamping and mounting structure and an electric appliance that do not need to be provided with a structure that prevents the fastening screw from coming out at the flange portion. A guide groove (315) is provided in the support member (31) of the clamping and mounting structure of the present invention along a direction orthogonal to the contact surface (111) of the flange portion (11). The screw head of the tightening screw (32) is disposed on a surface opposite to the contact surface (111) of the flange portion (11), and is inserted into the first insertion hole (32) of the shaft portion (322) into the flange portion (11) ( 112) In the state of the second insertion hole (311) with the support piece (316), the portion protruding from the second insertion hole (311) to the side opposite to the flange portion (11) in the shaft portion (322) , Set out the escape prevention part (325). In a direction orthogonal to the axial direction of the shaft portion (322), the size of the detachment prevention portion (325) is larger than the diameter of the second insertion hole (311).

Description

Clamping installation structure and electric appliance having the same

The present invention relates to a clamping installation structure and an electric appliance having the same, and more particularly, to a clamping installation structure for mounting a housing of an electrical appliance on a structural material, and a clamping installation structure having the same. Electrical appliances.

In the past, a human body detector has been known that includes a holder for a structural material for fixing a housing to a ceiling (for example, reference 1 [Japanese Patent Laid-Open Publication No. 2016-65774]).

The casing of the human body detector is formed by combining the main body and the outer cover, and a flange protruding laterally from the lower end of the main body is provided. The human body detector is mounted on a structural material by using a fastening screw that penetrates a screw through hole of a flange and a clamping piece that is fitted into a shaft portion of the fastening screw. A receiving portion is formed on the outer cover to receive the shaft portion of the fastening screw. The storage portion is formed in a rectangular parallelepiped shape with one side surface and the bottom surface open. A slit is formed at an upper end portion of the storage portion so that the clamping member can enter and exit in a plane orthogonal to the vertical direction.

A position is arranged on the casing so that the top surface of the casing (flange) is in contact with the bottom surface of the ceiling material when the clamping member enters the slit, and if the screw head of the fastening screw is turned, the clamping member starts from The slit is turned out and moved downward to clamp the ceiling material between the clamping member and the flange.

In Document 1, since the fastening screw is not held at the upper end portion of the storage portion, it is necessary to provide a structure for preventing the fastening screw from falling off from the screw insertion hole in the flange.

An object of the present invention is to provide a clamping and mounting structure that does not need to be provided with a structure that prevents a fastening screw from coming out on a flange portion, and an electric appliance having the clamping and mounting structure.

According to one aspect of the present invention, a clamping and mounting structure includes a flange portion, a support member, a pressing member, and a fastening screw. The flange portion has a contact surface in contact with a surface of a structural material. The support member protrudes from the contact surface of the flange portion. The pressing member sandwiches the structural material between the pressing member and the flange portion. The fastening screw has at least a shaft portion provided with an external thread portion, and a screw head provided at one end of the shaft portion. A guide groove is provided in the support member, and at least a portion of the shaft portion where the male screw portion is provided is disposed in the guide groove. The guide groove is provided on the support member along a direction orthogonal to the contact surface. The support member has a support piece located at an end on the opposite side to the flange portion of both ends of the guide groove. A first insertion hole and a second insertion hole that connect the guide groove to the outside in the axial direction of the shaft portion are provided on the flange portion and the support piece, respectively. The pressing member has an internal thread portion and a pressing piece, the internal thread portion is engaged with the external thread portion arranged in the guide groove, and the pressing piece protrudes to the outside of the guide groove and is used for the structure A material is sandwiched between the pressing piece and the flange portion. The screw head is disposed on a surface of the flange portion opposite to the contact surface, and in a state where the shaft portion is inserted into the first insertion hole and the second insertion hole, a portion of the shaft portion is removed from the first portion in the shaft portion. (2) The insertion hole is provided with a protrusion-preventing portion at a portion protruding opposite to the flange portion. In a direction orthogonal to the axial direction of the shaft portion, the size of the detachment prevention portion is larger than the diameter of the second insertion hole.

An aspect of the electrical appliance according to the present invention includes the clamping mounting structure and a casing mounted on the structural material using the clamping mounting structure.

The embodiment described below is only an example of the clamp mounting structure of the present invention and an electric appliance having the clamp mounting structure. The present invention is not limited to the following embodiments. As long as the following embodiments can achieve the object of the present invention, various changes can be made in accordance with the design and the like. (1) Summary

As shown in FIGS. 1 and 2, the clamping and mounting structure 30 of this embodiment includes a flange portion 11, a support member 31, a fastening screw 32, and a pressing member 33.

The flange portion 11 has a contact surface 111 that is in contact with the surface of the structural material 200 (see FIG. 3).

The support member 31 protrudes from the contact surface 111 of the flange portion 11.

The pressing member 33 sandwiches the structural material 200 between the pressing member 33 and the flange portion 11.

The fastening screw 32 includes at least a portion of a shaft portion 322 provided with an external thread portion 321 and a screw head 323 provided at one end of the shaft portion 322.

A guide groove 315 is provided in the support member 31, and at least a portion of the shaft portion 322 where the male screw portion 321 is provided is arranged in the guide groove 315. The guide groove 315 is provided in the support member 31 along a direction orthogonal to the contact surface 111 (a direction indicated by an arrow D1 in FIG. 2). The support member 31 has a support piece 316 which is located at the end opposite to the flange portion 11 of both ends of the guide groove 315.

The flange portion 11 and the support piece 316 are respectively provided with a first insertion hole 112 and a second insertion hole 311 that connect the guide groove 315 to the outside in the axial direction of the shaft portion 322.

The pressing member 33 includes an internal thread portion 331 that is engaged with the external thread portion 321 disposed in the guide groove 315, and a pressing piece 333 that protrudes outward from the guide groove 315 to hold the structural material 200 under pressure. Between the piece 333 and the flange portion 11.

The screw head 323 is disposed on a surface of the flange portion 11 opposite to the contact surface 111. When the shaft portion 322 is inserted into the first insertion hole 112 and the second insertion hole 311, the screw head 323 is located in the shaft portion 322 from the second position. The insertion hole 311 is provided at a portion protruding on the side opposite to the flange portion 11, and a detachment prevention portion 325 is provided. In addition, in a direction orthogonal to the axial direction of the shaft portion 322 (the direction indicated by the arrow D2 in FIG. 2), the size W1 of the detachment prevention portion 325 is larger than the diameter of the second insertion hole.

The electric appliance according to this embodiment includes a clip mounting structure 30 and a case 2 mounted on the structural material 200 by the clip mounting structure 30.

As described above, in a direction orthogonal to the axial direction of the shaft portion 322, the size W1 of the detachment prevention portion 325 is larger than the diameter of the second insertion hole 311, so the detachment prevention portion 325 is caught in the second insertion hole 311. Therefore, the fastening screw 32 cannot be easily removed from the first insertion hole 112. Therefore, there is an advantage that the flange portion 11 does not need to be provided with a structure for preventing the fastening screw 32 from being easily detached from the first insertion hole 112. (2) Details (2.1) Structure

Hereinafter, referring to FIG. 1 to FIG. 5, a clamp mounting structure of the present invention and an embodiment of an electric appliance having the clamp mounting structure will be described. In addition, as shown in FIG. 1 and the like by arrows of “up”, “down”, “left”, “right”, “front”, and “rear”, directions are specified. However, these directions are not intended to specify the directions when using the clamped mounting members and electrical appliances. In addition, the arrows showing the directions in the drawings are for illustration only, and do not appear in the entity.

The electric appliance of this embodiment is an automatic switch (hereinafter simply referred to as a switch) 1 with a hot wire sensor installed in the structural material 200 constituting the ceiling. The switch 1 includes a sensor 40 that detects the presence of a person, and controls the load in accordance with the detection result of the sensor 40. Such a switch 1 is used, for example, in the following control: when the load is illuminated, the illumination is turned on when a person enters the detection range of the sensor 40. If a person does not exist in the detection of the sensor 40, If the measurement range status continues for a predetermined time, the lighting will be turned off.

As shown in FIG. 1, the switch 1 includes a housing 2, and the housing 2 is composed of a main body 20 and an outer cover 10. Inside the housing 2, a circuit block 4 having a sensor 40, a lens block 5, and a spring member 7 are housed. The switch 1 further includes a plate 8 and a terminal cover 9.

The outer cover 10 is formed of a molded article of synthetic resin. The outer cover 10 is provided with the cylindrical part 12 (refer FIG. 2) which closed the bottom surface, and provided the opening in the top surface. In this embodiment, the flange portion 11 of the clamping and mounting structure 30 is provided integrally with the outer cover 10 constituting the casing 2.

The flange portion 11 is formed in a circular plate shape. One surface in the thickness direction of the flange portion 11 becomes the contact surface 111, and the cylindrical portion 12 protrudes from the contact surface 111. In this embodiment, the top surface of the flange portion 11 is a contact surface 111. A recessed portion, a hole, or the like is formed on the top surface of the flange portion 11. The entire top surface of the flange portion 11 is not configured to be in contact with the structural material 200. However, the top surface of the flange portion 11 may be formed as a flat surface so that The entire top surface of the flange portion 11 is in contact with the structural material 200.

A circular through hole 113 penetrating the flange portion 11 is provided in the flange portion 11 inside the cylindrical portion 12 in a direction orthogonal to the contact surface 111 (thickness direction of the flange portion 11). In the flange portion 11, first insertion holes 112 penetrating the flange portion 11 in the thickness direction are provided at two positions on the outer side of the cylindrical portion 12. Two first insertion holes 112 are provided in the contact surface 111 on the opposing flanges. The center position of the portion 11 is symmetrical.

The fastening screws 32 are respectively inserted into the two first insertion holes 112 from the lower side. The fastening screw 32 is a flat head screw. A thread groove is formed in the shaft portion 322 except for a portion other than the base portion 327 and the front end portion 324 which are close to the screw head 323. The portion where the screw groove is formed in the shaft portion 322 of the fastening screw 32 is referred to as a male screw portion 321. Here, the outer cover 10 is formed so that the inner diameter of the first insertion hole 112 is larger than the nominal diameter of the external thread portion 321 of the fastening screw 32. Therefore, the inner diameter of the first insertion hole 112 and the fastening A gap is generated between the screws 32. Therefore, the fastening screw 32 is not caught in the first insertion hole 112 and is smoothly inserted.

The screw head 323 is disposed on the bottom surface of the flange portion 11, and in a state where the shaft portion 322 is inserted into the first insertion hole 112 and the second insertion hole 311, the portion of the shaft portion 322 protruding from the second insertion hole 311 to the upper side. , A detachment preventing portion 325 is provided (refer to FIG. 2 and FIG. 3). Here, in a direction orthogonal to the axial direction of the shaft portion 322 (the direction indicated by the arrow D2 in FIG. 2), the size W1 of the detachment prevention portion 325 is larger than the diameter of the second insertion hole 311. In addition, in the axial direction of the shaft portion 322 of the shaft portion 322, an anti-rotation portion 326 is provided continuously with the external thread portion 321 at a position on the opposite side to the support piece 316-based anti-escape portion 325 (refer to FIG. 2) , Figure 3, Figure 5). Here, in a direction orthogonal to the axial direction of the shaft portion 322 (the direction indicated by the arrow D2 in FIG. 5), the size W2 of the anti-rotation portion 326 is larger than the spiral valley diameter of the male screw portion 321.

The tube portion 12 includes two side walls 121 facing each other in the left-right direction and two side walls 122 facing each other in the front-rear direction. On the two side walls 122, two protruding pieces 123 protruding upward are respectively provided. A through hole 124 is provided in each protruding piece 123.

The main body 20 is formed of a molded article of synthetic resin. The main body 20 is formed in a closed cylindrical shape, and an opening is provided in a lower portion of the main body 20. On the side wall of the main body 20, a protrusion 201 inserted into the through hole 124 is provided at a portion corresponding to the through hole 124 of each protruding piece 123. Therefore, by bringing the main body 20 and the outer cover 10 close to each other and inserting the protrusion 201 into the through hole 124 of each protruding piece 123, the outer cover 10 and the main body 20 are combined (refer to FIGS. 2, 4A, and 4B).

A wire insertion hole 202 (refer to FIG. 5) is provided on the top surface of the main body 20, and a wire for electrically connecting an external circuit such as a load and an AC power source to the circuit block 4 is inserted. A connection terminal connected to the electric wire is housed inside the body 20. The electric wire inserted into the main body 20 from the electric wire insertion hole 202 is electrically and mechanically connected to the connection terminal, and the external circuit is electrically connected to the circuit block 4 through the connection terminal. In addition, a terminal cover 9 covering the electric wire insertion hole 202 is mounted on the top surface of the main body 20.

In the present embodiment, the support members 31 of the clamping and mounting structure 30 are integrally provided on the left and right side walls of the main body 20 constituting the housing 2, respectively. That is, a support member 31 is provided on the body 20 protruding from the contact surface 111 of the flange portion 11. The support member 31 includes a pair of side walls 312 and 313 extending in a direction orthogonal to the contact surface 111 (direction indicated by arrow D1 in FIG. 2), and a guide groove 315 is provided between the pair of side walls 312 and 313. That is, the guide groove 315 is provided on the support member 31 along a direction orthogonal to the contact surface 111, and at least the portion where the male screw portion 321 is provided in the shaft portion 322 of the fastening screw 32 is arranged in the guide groove 315. In addition, the pair of side walls 312 and 313 protrude higher than the top surface of the main body 20, and are closed at one end side of the pair of side walls 312 and 313 that protrude upward from the main body 20 by the rear wall 314 (the main body 20 side).

In addition, one of the side walls 312 and the rear wall 314 protrudes to the upper side than the other side wall 313, and the support piece 316 located at the upper end of the guide groove 315 protrudes from the upper ends of the side wall 312 and the rear wall 314. That is, the support member 31 has a support piece 316, which is located at the end opposite to the flange portion 11 of the two ends of the guide groove 315, and the support piece 316 is provided in the axial direction of the shaft portion 322 to penetrate and support The second insertion hole 311 of the piece 316. Here, the inner diameter of the second insertion hole 311 is larger than the diameter of the front end portion 324 of the fastening screw 32. In this embodiment, a thread groove is not formed in the front end portion 324. However, in the case where the thread groove is formed in the front end portion 324, the inner diameter of the second insertion hole 311 is made larger than the nominal value of the externally threaded portion provided in the front end portion 324. A larger diameter is sufficient.

Between the upper end portion of the side wall 313 and the support piece 316, a recessed portion 317 into which the pressing member 33 is inserted is formed. In the present embodiment, the guide groove 315 is opened on both sides of a direction (direction indicated by arrow D3 in FIG. 4B and FIG. 5) orthogonal to the axial direction of the shaft portion 322 while the recess 317 is formed to the rear wall 314. The recessed portion 317 is provided at a position corresponding to the rotation prevention portion 326 in the axial direction of the shaft portion 322. In this embodiment, the opening corresponding to the anti-rotation portion 326 in the axial direction of the shaft portion 322 is opened through the opening of the recessed portion 317 and the guide groove 315 so as to be opened on both sides in a direction orthogonal to the axial direction of the shaft portion 322. This method constitutes a penetrating portion that connects the guide groove 315 with the outside.

The pressing member 33 includes a circular plate-shaped base portion 332 provided with a female screw portion 331 and a pressing piece 333 protruding from one end portion of the base portion 332. The female screw portion 331 of the pressing member 33 is engaged with the male screw portion 321 of the fastening screw 32, and the pressing piece 333 protrudes outward from the guide groove 315. When the fastening screw 32 is rotated, the pressing member 33 is rotated in response to the rotation of the fastening screw 32. If the pressing piece 333 contacts the side wall 312 or the side wall 313 due to the rotation of the pressing member 33, the rotation of the pressing member 33 is restricted, and the pressing member 33 moves in the guide groove 315 along the axial direction of the shaft portion 322. For example, when the fastening screw 32 is rotated clockwise when viewed from the lower side, the pressing piece 333 moves in a direction (lower side) closer to the flange portion 11 in response to the rotation of the fastening screw 32. If the fastening screw 32 is rotated counterclockwise when viewed from the lower side, the pressing piece 333 contacts the side wall 313 in response to the rotation of the fastening screw 32, and the pressing piece 333 moves away from the flange portion 11 (upper side). )mobile. In the following description, the rotation direction of the fastening screw 32 will be described in the "counterclockwise direction" and "clockwise direction". This direction is the rotation direction when the screw head 323 of the fastening screw 32 is viewed from the lower side.

The circuit block 4 is housed inside the casing 2. The circuit block 4 is provided with a sensor 40 for detecting the presence of a person. The sensor 40 has, for example, a pyroelectric infrared detection element, and detects whether or not a person exists in the detection range by detecting a hot line emitted from a human body. Circuit block 4 includes: a switching element (such as a triac) connected between the lighting load and the AC power source; and a control circuit that is turned on / off in response to the detection result of the sensor 40 Switching element. If the sensor 40 detects a person, the control circuit of the circuit block 4 turns on the switching element, so the lighting load is turned on. If the sensor 40 does not detect the state of the person for a certain period of time, the control circuit of the circuit block 4 turns off the switching element, so the lighting load is turned off.

The lens block 5 includes a lens 50 and a rotation frame 60 that holds the lens 50.

The lens 50 is formed of a synthetic resin having a property that heat rays can easily pass through. The lens 50 has a function of condensing the heat rays incident from the detection range on the light receiving surface of the sensor 40.

The rotating frame 60 is formed in a cylindrical shape as if the sphere is cut in two planes parallel to the plane passing through the center of the sphere. Two rod-shaped shaft portions 61 are provided on the peripheral surface of the rotating frame 60 (see FIG. 1). The two shaft portions 61 are provided on the peripheral surface of the rotating frame 60 at positions symmetrical to the center axis of the rotating frame 60. The lens 50 is held in the rotating frame 60 such that the light receiving surface of the lens 50 is exposed from one end side of the rotating frame 60.

The spring member 7 is formed by performing a stamping process on a plate material of a metal material (for example, stainless steel) having a spring property. The spring member 7 is formed in the shape of a two-layered ring portion that connects the inner and outer sides with a plurality of connecting pieces.

In this lens block 5, the lens 50 projects from the through hole 113 to the lower side, and is arranged on the upper side of the flange portion 11 in a state where the two shaft portions 61 contact the edge portion of the through hole 113. The spring member 7 is disposed on the upper side of the flange portion 11 in a state where the upper portion of the rotating frame 60 is inserted into the inner ring portion thereof, and applies a downward elastic force to the lens block 5. This lens block 5 can be rotated about the central axis of the rotating frame 60 in a plane parallel to the contact surface 111 of the flange portion 11, and can also be centered on the shaft portion 61 in a plane orthogonal to the shaft portion 61. While spinning.

A plate 8 is detachably attached to the bottom surface of the flange portion 11. For example, the claws provided on the top surface of the plate 8 are clamped to the holes of the flange portion 11 to attach the plate 8 to the flange portion 11. A through hole 81 is provided in the center of the plate 8, and the lens 50 is inserted into this through hole 81. Therefore, in a state where the switch 1 is installed in a structural material 200 such as a ceiling, a hot line from a detection range on the lower side of the ceiling can enter the sensor 40 through the lens 50. (2.2) Assembly method

Hereinafter, a method of assembling the switch 1 according to this embodiment will be described. One or all of the steps described below can be mechanized partially or manually.

In the first step, the lens block 5 and the spring member 7 are held in the outer cover 10, and the circuit block 4 is housed inside the main body 20. Then, the outer cover 10 and the main body 20 are combined, and the protrusion 201 is inserted into the through hole 124 of the protruding piece 123, so that the outer cover 10 and the main body 20 are combined.

In the second step, the fastening screw 32 is inserted from the bottom surface of the flange portion 11 into the first insertion hole 112 of the flange portion 11. In addition, the female screw portion 331 of the pressing piece 333 is inserted into the front end portion 324 of the fastening screw 32 exposed from the first insertion hole 112 to the upper side, and the fastening screw 32 is rotated to thereby connect the external screw portion 321 and the internal screw portion. 331 engages.

In the third step, as shown in FIG. 4A, the front end portion 324 of the fastening screw 32 is protruded upward from the second insertion hole 311 of the support piece 316. Then, as shown in FIG. 4B, the front ends of the pair of tools 400 are clamped by the front ends 324 of the fastening screws 32 protruding from the support piece 316 to the upper side from both sides to crush them. Thereby, the detachment prevention part 325 is formed in the front-end | tip part 324 of the fastening screw 32. In a direction orthogonal to the axial direction of the shaft portion 322, the size W1 of the detachment prevention portion 325 is larger than the inner diameter of the second insertion hole 311, so the fastening screw 32 cannot be easily removed from the flange portion 11.

In the fourth step, the front end of the pair of tools 400 clamps the outer screw portion 321 of the fastening screw 32 from the both sides in a direction orthogonal to the axial direction of the shaft portion 322, and is lower than the support piece 316. And squash it. Thereby, the anti-rotation portion 326 is formed by being connected to the external thread portion 321 of the fastening screw 32 (FIGS. 3 and 5). Here, in a direction orthogonal to the axial direction of the shaft portion 322, the size W2 of the rotation prevention portion 326 is larger than the spiral valley diameter of the male screw portion 321. Therefore, if the pressing member 33 moves along the male screw portion 321 and the anti-rotation portion 326 abuts the female screw portion 331, the pressing member 33 cannot rotate further, and the rotation of the pressing member 33 is restricted.

In the fifth step, the plate 8 is mounted on the flange portion 11 so as to cover the bottom surface of the flange portion 11, and the terminal cover 9 is mounted on the upper side of the body 20. (2.3) Construction method

Hereinafter, a construction method of mounting the switch 1 of this embodiment on the structural material 200 will be described.

When the switch 1 is mounted on the structural material 200, the pressing piece 333 of the pressing member 33 is accommodated in the recess 317. In this state, the pressing piece 333 is disposed on the upper side of the body 20. The plate 8 is removed from the flange portion 11.

A through hole 210 is provided in the structural material 200 and has a size (the body 20 and the like) that can be inserted into the switch 1 and protrudes from the contact surface 111 of the flange portion 11 (refer to FIG. 3). A portion of the switch 1 protruding from the contact surface 111 of the flange portion 11 is inserted into this through hole 210 so that the contact surface 111 of the flange portion 11 is in contact with the bottom surface of the structural material 200. Then, if the fastening screw 32 is rotated clockwise with a tool such as a screwdriver, the pressing member 33 is rotated clockwise in response to the rotation of the fastening screw 32, and the pressing piece 333 is turned out of the recess 317, and In contact with the sidewall 312. When the pressing piece 333 moves to a position against the side wall 312, the pressing piece 333 exists in a position in the structural material 200 that overlaps with the edge portion of the through hole 210 in the vertical direction. In addition, if the pressing piece 333 abuts against the side wall 312, the rotation of the pressing member 33 is restricted. If the fastening screw 32 is rotated clockwise in this state, the pressing member 33 moves downward in the axial direction of the shaft portion 322 in response to the rotation of the fastening screw 32, and the pressing piece 333 and the structural material 200 Contact the top surface. At this time, the structural material 200 of the ceiling is sandwiched between the pressing member 33 and the flange portion 11, and the housing 2 is fixed to the ceiling. After that, if the plate 8 is mounted on the bottom surface of the flange portion 11, the mounting of the switch 1 is completed.

On the other hand, when the switch 1 is removed from the structural material 200, the plate 8 is first removed from the flange portion 11. Then, if the fastening screw 32 is rotated counterclockwise with a tool such as a screwdriver, the pressing member 33 is rotated counterclockwise in response to the rotation of the fastening screw 32. If the pressing piece 333 is against the side wall 313, the pressing member 33 is pushed. The rotation of the pressing member 33 is restricted. In this state, when the fastening screw 32 is rotated counterclockwise, the pressing member 33 moves upward in the axial direction of the shaft portion 322 in response to the rotation of the fastening screw 32. Then, if the pressing piece 333 moves to an upper side than the side wall 313, the pressing piece 333 rotates counterclockwise, and the pressing piece 333 is inserted into the recess 317. In this state, the pressing piece 333 exists on the upper side of the body 20, and the pressing piece 333 is located at a position in the structural material 200 that does not overlap the edge portion of the through hole 210 in the vertical direction. Therefore, if the casing 2 is moved to the lower side, the pressing piece 333 is not caught on the edge portion of the through hole 210 in the structural material 200, and the casing 2 can be removed from the structural material 200. (3) Modifications

Hereinafter, a clip mounting structure and an electric appliance according to a modification of the above embodiment will be listed. In addition, each structure of the modification described below can be applied in appropriate combination with each structure described in the above embodiment.

Although the clamping and mounting structure 30 of this embodiment is formed by applying a force to a part of the fastening screw 32 to plastically deform the detachment preventing portion 325, it may be formed by other methods. For example, a portion of the fastening screw 32 may be heated to deform it to form the detachment preventing portion 325. In addition, other parts of the fastening screw 32 that have a larger dimension W1 in a direction perpendicular to the shaft portion 322 than the inner diameter of the second insertion hole 311 may be mounted by welding, contacting, screwing, or other methods. , So as to provide a detachment prevention portion 325.

Although the clamping and mounting structure 30 of this embodiment forms a rotation preventing portion 326 by plastically deforming a part of the fastening screw 32 by force, the rotation preventing portion 326 may be provided by other methods. For example, other components with a larger diameter than the screw valley diameter of the external thread portion 321 in a direction orthogonal to the shaft portion 322 may be mounted on a part of the fastening screw 32 by welding, contacting, screwing, or other methods. Thereby, an anti-rotation portion 326 is provided.

In addition, in the clamping and mounting structure 30 of the present embodiment, although the rotation prevention portion 326 is formed in the shaft portion 322 where the externally threaded portion 321 is formed, the rotation prevention portion 326 may be provided continuously with the externally threaded portion 321. For example, in the front end portion 324 of the shaft portion 322 where the externally threaded portion 321 is not provided, the rotation prevention portion 326 may be provided near the externally threaded portion 321. In this case, the pressing member 33 that has moved to the end of the externally threaded portion 321 in response to the rotation of the shaft portion 322 still abuts against the anti-rotation portion 326, thereby making it difficult for the internally threaded portion 331 to engage with the externally threaded portion 321. Take off.

Although the clamping and mounting structure 30 of this embodiment is a metal part for fastening the screw 32 and the pressing member 33, if the fastening screw 32 and the pressing member 33 can obtain the necessary strength, it may be formed of synthetic resin.

In the clamp mounting structure 30 of this embodiment, although the housing 2 is mounted on a structural material constituting the ceiling, the housing 2 may be mounted on a structural material such as a wall surface.

Although the electric appliance of this embodiment is an automatic switch with a hot wire sensor, the electric appliance is not limited to an automatic switch with a hot wire sensor. The electric appliance may be a hot wire sensor without a switch. In addition, the electric appliance of this embodiment is a hot wire sensor provided with a thermoelectric element that detects a hot wire, but it may also be an optical sensor, for example, an image sensor may be used to take pictures based on the image sensor. A human detection sensor that detects whether a person is present. In addition, electrical appliances may be provided with sensors that detect objects other than people (such as brightness). In addition, the electric appliance is not limited to a sensor, and may be a lighting appliance such as a downlight.

In addition, although the clamp mounting structure 30 of this embodiment is provided with the flange portion 11 and the supporting member 31 integrally with the housing 2 of the electric appliance, the clamp mounting structure 30 and the housing 2 of the electric appliance may be different. element. That is, the clamping mounting structure 30 having the flange portion 11, the supporting member 31, the fastening screw 32, and the pressing member 33 can be formed as a different element from the case 2 composed of the main body 20 and the outer cover 10. Then, the housing 2 of the electric appliance can be mounted on the clamping mounting structure 30 which is a component different from the housing 2. Here, if the structure for mounting the housing 2 of the electric appliance to the clamp mounting structure 30 is common to a plurality of electric appliances, the clamp mounting structure 30 of this embodiment can be applied to a plurality of electric appliances. appliance. (4) Effect

The clamp mounting structure 30 according to the first aspect includes a flange portion 11, a support member 31, a pressing member 33, and a fastening screw 32. The flange portion 11 has a contact surface 111 that is in contact with the surface of the structural material 200. The support member 31 protrudes from the contact surface 111 of the flange portion 11. The member 33 is pressed to sandwich the structural material 200 between it and the flange portion 11. The fastening screw 32 includes at least a portion of a shaft portion 322 provided with an external thread portion 321 and a screw head 323 provided at one end of the shaft portion 322. A guide groove 315 is provided on the support member 31 along a direction orthogonal to the contact surface 111. At least a portion of the shaft portion 322 where the male screw portion 321 is provided is arranged in the guide groove 315. The support member 31 has a support piece 316 located at an end on the side opposite to the flange portion 11 of the guide groove 315 in the axial direction of the shaft portion 322. The flange portion 11 and the support piece 316 are respectively provided with a first insertion hole 112 and a second insertion hole 311 that connect the guide groove 315 to the outside in the axial direction of the shaft portion 322. The pressing member 33 includes an internal thread portion 331 that is engaged with the external thread portion 321 disposed in the guide groove 315, and a pressing piece 333 that protrudes outward from the guide groove 315 to hold the structural material 200 under pressure. Between the piece 333 and the flange portion 11. The screw head 323 is disposed on a surface of the flange portion 11 opposite to the contact surface 111. When the shaft portion 322 is inserted into the first insertion hole 112 and the second insertion hole 311, the screw head 323 is positioned in the shaft portion 322 from the second The insertion hole 311 is provided at a portion protruding on the side opposite to the flange portion 11, and a detachment prevention portion 325 is provided. In a direction orthogonal to the axial direction of the shaft portion 322 (the direction indicated by the arrow D2 in FIG. 2), the size W1 of the detachment prevention portion 325 is larger than the diameter of the second insertion hole 311.

Thereby, the detachment prevention part 325 provided in the shaft part 322 is clamped to the edge part of the 2nd insertion hole 311, and it becomes difficult for the fastening screw 32 to fall out from the flange part 11. Therefore, there is an advantage that it is not necessary to provide the flange portion 11 with a structure that prevents the fastening screw 32 from coming out easily.

In the second aspect of the clamping and mounting structure 30, in the first aspect of the clamping and mounting structure 30, in the axial direction of the shaft portion 322, on the opposite side of the support piece 316 from the anti-extraction portion 325 An anti-rotation portion 326 is provided at a portion continuous with the male screw portion 321. In a direction orthogonal to the axial direction of the shaft portion 322 (the direction shown by the arrow D2 in FIG. 5), the size of the anti-rotation portion 326 should be larger than the diameter of the spiral valley of the external thread portion 321.

With this, in a case where the pressing member 33 moves in the axial direction of the shaft portion 322 in response to the rotation of the fastening screw 32, if the anti-rotation portion 326 abuts the internal thread portion 331, the pressing member 33 becomes unable to further follow Moves in the axial direction of the shaft portion 322. Therefore, the engagement of the internally threaded portion 331 and the externally threaded portion 321 becomes difficult to disengage.

In the third aspect of the clamping and mounting structure 30, in the second aspect of the clamping and mounting structure 30, a penetrating portion may be provided on the support member 31 at a position corresponding to the rotation prevention portion 326 in the axial direction of the shaft portion 322. (This embodiment is constituted by openings of the recessed portion 317 and the guide groove 315). This penetrating portion connects the guide groove 315 to the outside so that the guide groove 315 is open on both sides of a direction orthogonal to the axial direction of the shaft portion 322 (direction shown by arrow D3 in FIGS. 4B and 5).

Thereby, the shaft portion 322 can be sandwiched from both sides of a direction (direction indicated by an arrow D3 in FIGS. 4B and 5) orthogonal to the axial direction of the shaft portion 322 through the through portion. Therefore, when a part of the shaft portion 322 is plastically deformed to form the anti-rotation portion 326, it becomes easy to perform a work of clamping a portion of the shaft portion 322 from both sides and applying a force.

The clamping installation structure 30 of the fourth aspect is preferably in the clamping installation structure 30 of any of the first aspect to the third aspect, so that the inner diameter of the first insertion hole 112 is larger than that of the external thread portion 321. Nominal diameter is larger.

Thereby, the fastening screw 32 can be smoothly inserted into the first insertion hole 112 so that the outer screw portion 321 of the fastening screw 32 does not interfere with the end surface of the first insertion hole 112. For example, if the inner diameter of the first insertion hole 112 is less than the nominal diameter of the externally threaded portion 321, when the fastening screw 32 is inserted into the first insertion hole 112, the externally threaded portion 321 of the fastening screw 32 interferes with the first Possibility of inserting the end face of the hole 112. In particular, when the inner diameter of the first insertion hole 112 is smaller than the nominal diameter of the externally threaded portion 321, a thread groove is formed on the end surface of the first insertion hole 112 and the externally threaded portion 321 is inserted. The operation of inserting the first insertion hole 112 requires time. In addition, since a thread groove is formed on an end surface of the first insertion hole 112, there is a problem such as generation of shavings. In contrast, if the inner diameter of the first insertion hole 112 is larger than the nominal diameter of the male screw portion 321, the fastening screw 32 can be inserted into the first insertion hole 112 in a short time, and the fastening screw 32 can be inserted into the first insertion hole 112. 1 It is difficult to generate shavings when inserting the hole 112.

The fifth aspect of the electrical appliance includes a clamping mounting structure 30 as in any one of the first aspect to the fourth aspect, and a casing 2 mounted on the structural material 200 by the clamping mounting structure 30. Thereby, similarly to the clamp mounting structure 30 of the first aspect, there is an advantage that it is not necessary to provide the flange portion 11 with a structure that prevents the fastening screw 32 from coming out easily.

1‧‧‧ Automatic switch (electrical appliance) with hotline sensor

10‧‧‧ Cover

11‧‧‧ flange

111‧‧‧contact surface

112‧‧‧The first insertion hole

113‧‧‧through hole

12‧‧‧ tube

121, 122‧‧‧ sidewall

123‧‧‧ prominence

124‧‧‧through hole

2‧‧‧shell

20‧‧‧ Ontology

200‧‧‧ Structural Materials

201‧‧‧ protrusion

202‧‧‧Wire insertion hole

210‧‧‧through hole

30‧‧‧Clamping installation structure

31‧‧‧Support components

311‧‧‧ 2nd insertion hole

312, 313‧‧‧ sidewall

314‧‧‧ rear wall

315‧‧‧Guide groove (through section)

316‧‧‧Support

317‧‧‧Concave part (through part)

32‧‧‧Tightening screws

321‧‧‧external thread

322‧‧‧Shaft

323‧‧‧Screw head

324‧‧‧Front end

325‧‧‧Anti-protrusion section

326‧‧‧Anti-rotation section

327‧‧‧ base

33‧‧‧Pushing member

331‧‧‧ Internal thread

332‧‧‧Base

333‧‧‧Pushing tablets

4‧‧‧circuit block

40‧‧‧Sensor

400‧‧‧Tools

5‧‧‧ lens block

50‧‧‧ lens

60‧‧‧Rotating frame

61‧‧‧Shaft

7‧‧‧ spring member

8‧‧‧ plates

81‧‧‧through hole

9‧‧‧Terminal cover

D1‧‧‧ Orthogonal to the contact surface

D2‧‧‧ A direction orthogonal to the axial direction of the shaft

W1‧‧‧ Dimensions of the anti-fallout part in a direction orthogonal to the shaft part

W2‧‧‧ Dimension of anti-rotation part in a direction orthogonal to the shaft part

FIG. 1 is an exploded perspective view of an electric appliance according to an embodiment of the present invention. Fig. 2 is an external perspective view of the electric appliance as described above. Fig. 3 is a construction state diagram of the same electric appliance. 4A and 4B are side views of the electric appliance as described above. FIG. 5 is a sectional view taken along the line C1-C1 in FIG. 3. FIG.

Claims (5)

A clamping installation structure includes: a flange portion having a contact surface in contact with a surface of a structural material; a support member protruding from the contact surface of the flange portion; a pressing member for pressing the member and the The structural material is sandwiched between the flange portions; and a fastening screw having: a shaft portion provided with an external thread portion at at least a portion thereof; and a screw head provided at one end of the shaft portion; A support member is provided with a guide groove along a direction orthogonal to the contact surface, and at least a portion of the shaft portion where the external thread portion is provided is arranged in the guide groove; the support member has a support piece which is located on two sides of the guide groove; One of the ends is opposite to the flange portion; and the flange portion and the support piece are respectively provided in a first insertion hole and a second insertion hole for connecting the guide groove to the outside in the axial direction of the shaft portion. A hole; the pressing member has: an internal thread portion that is engaged with the external thread portion disposed in the guide groove; and a pressing piece protruding to the outside of the guide groove for holding the structural material in the pressing groove Between the tablet and the flange portion; The screw head is disposed on a surface of the flange portion that is opposite to the contact surface. In a state where the shaft portion is inserted into the first insertion hole and the second insertion hole, the screw portion extends from the second portion in the shaft portion. An insertion hole is provided at a portion protruding opposite to the flange portion, and a detachment prevention portion is provided; in a direction orthogonal to the axial direction of the shaft portion, the detachment prevention portion has a size larger than the diameter of the second insertion hole. Bigger. For example, the clamping and mounting structure of the scope of application for a patent, wherein, in the axial direction of the shaft portion of the shaft portion, a portion on the opposite side of the detachment prevention portion relative to the support sheet is connected to the The externally threaded portion is continuous with an anti-rotation portion. In a direction orthogonal to the axial direction of the shaft portion, the size of the anti-rotational portion is larger than the spiral valley diameter of the externally threaded portion. For example, the clamping and mounting structure of the second patent application scope, wherein, in the support member, a portion corresponding to the anti-rotation portion in the axial direction of the shaft portion, so that the guide groove is in the axial direction with the shaft portion A penetrating portion connecting the guide groove to the outside is provided so that both sides of the orthogonal direction are open. For example, the clamping and mounting structure according to any one of claims 1 to 3, wherein the inner diameter of the first insertion hole is larger than the nominal diameter of the external thread portion. An electric appliance, comprising: a clamping installation structure according to any one of claims 1 to 4 of the scope of application for a patent, and a housing mounted on the structural material using the clamping installation structure.