Attachment structure of implantable apparatus

Abstract

To provide an attachment structure of an implantable apparatus which can move a lock end part to the outside of an apparatus main body by using a spring member, and can prevent an attachment failure caused by the catch and hold of the spring member and a screw shaft.SOLUTION: An attachment structure of an implantable apparatus comprises an apparatus main body 1 attached to an implanting hole Ca which is formed at a ceiling C, and an attachment tool 12 abutting on an upper face of the ceiling C, and attaching the apparatus main body 11. The attachment tool 12 has a screw shaft 52 and a rotating member 51 which is rotatable with the screw shaft 52 as a center. The rotating member 51 has a shaft pivot part 61 to which the screw shaft 52 is attached, a lock arm part 62 to which the screw shaft 52 is attached, and a spring member 75. The lock arm part 62 has an arm main body part 77 which can move along the screw shaft 52 by the rotation of the screw shaft 52, and a lock end part 76 which can abut on the upper face of the ceiling C. The spring member 75 is fixed to the lock end part 76 at one end part, and abuts on the shaft pivot part 61 at the other end part.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a mounting structure for a built-in fixture which is embedded in a mounting hole formed in a mounting surface such as a ceiling and is mounted on the mounting surface. [Background technology]

[0002] Conventionally, a recessed lighting fixture has been used as described in Patent Document 1. Patent Document 1 discloses a recessed lighting fixture in which the fixture body is attached to the ceiling not by bolts but by a rotatable fixture so as to be installed on the inner surface of the ceiling. The fixture in Patent Document 1 has a pair of mounting ends and a rotating shaft that rotatably supports the mounting ends. Before mounting, the mounting ends are located within the outer dimensions of the fixture body near the side surfaces, and after mounting, the mounting ends are placed on the inner surface of the ceiling to mount the fixture body to the ceiling.

[0003] A known structure for such a mounting fixture having a rotating shaft for rotatably supporting the engaging arm is a coil spring on a threaded rod at the base of the engaging arm, with one end of the coil spring engaging the engaging arm and the other end abutting against the inner surface of the support frame to constantly urge the engaging arm outward, as in Patent Document 2. The engaging arm is stopped from rotating when it abuts against the support shaft, and moves outward when the abutment between the support shaft and the engaging arm is released. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2000-276933 A [Patent Document 2] Jpn. Jpn. Published No. 48-31643 Summary of the Invention [Problem to be solved by the invention]

[0005] When using conventional mounting fixtures, the coil spring is attached to a threaded rod, so there is a possibility that the coil spring and the threaded rod may get caught, preventing the movement of the engagement arm and resulting in a poor mounting.

[0006] The present invention has been made in consideration of the above-mentioned problems, and aims to provide an installation structure for an embedded device that allows the engaging end to be moved outwardly of the device body by a spring member, thereby preventing installation failure due to the spring member getting caught on the screw shaft. [Means for solving the problem]

[0007] The problem to be solved by the present invention has been described above, and the means for solving this problem will now be described.

[0008] That is, the mounting structure for a recessed type fixture disclosed in the present application is a mounting structure for a recessed type fixture to be mounted in a recessed hole provided in a ceiling, and includes a fixture body and a mounting fixture for mounting the fixture body by abutting against the upper surface of the ceiling. The mounting fixture has a screw shaft and a rotating member that can rotate around the screw shaft. The rotating member has a shaft support portion to which the screw shaft is attached, a locking arm portion attached to the screw shaft, and a spring member. The locking arm portion has an arm body portion that can move along the screw shaft by rotation of the screw shaft, and a locking end portion that can abut against the upper surface of the ceiling. The spring member has one end fixed to the locking end portion and the other end abutting against the shaft support portion.

[0009] In the mounting structure for an embedded device disclosed in the present application, it is preferable that the axial support portion has an upper surface portion to which the screw shaft is attached, and is configured so that when the locking arm portion abuts against the upper surface portion of the axial support portion, a frictional force is generated between the locking arm portion and the upper surface portion of the axial support portion.

[0010] In the mounting structure for an implantable device disclosed in the present application, the rotating member can set the locking arm portion to an open state or a closed state by rotating the locking arm portion. It is preferable that the winding angle of the spring member when the locking arm portion is closed is 2 / 3 or less of the winding angle of the locking arm portion when it is open.

[0011] In the mounting structure for an embedded device disclosed in the present application, it is preferable that the tip of the spring member that abuts against the axial support portion is machined to have a curved portion, and that the curved portion is configured to be movable while abutting against the axial support portion.

[0012] In the mounting structure for an embedded device disclosed in the present application, when the locking arm portion is in a closed state, it is preferable that the tip of the spring member is positioned between both side surfaces extending in the longitudinal direction of the device body in a plan view.

[0013] In the mounting structure for an embedded device disclosed in the present application, it is preferable that the spring member is fixed at the locking end by a fixing member, and when the locking arm portion is in a closed state, the fixing member is positioned closer to the device body in a planar view. Effect of the Invention

[0014] According to the present invention, it is possible to provide an installation structure for an embedded device that can move the engaging end portion outwardly of the device body using a spring member, thereby preventing installation failure due to the spring member getting caught on the screw shaft. [Brief description of the drawings]

[0015] [Figure 1] 1 is a perspective view of an implantable device according to one embodiment of the present invention; [Diagram 2] FIG. [Diagram 3] FIG. [Figure 4] FIG. [Diagram 5]FIG. 13 is a side view showing the locking arm portion in an open state. [Figure 6] FIG. 11 is a side view showing the state in which the locking arm portion has moved to the upper end of the shaft support portion. [Figure 7] FIG. 13 is a side view showing the locking arm portion in an open state. [Figure 8] FIG. 11 is a plan view showing the shaft support portion and the spring member in the state where the locking arm portion is in an open state. [Figure 9] FIG. 11 is a plan view showing the shaft support portion and the spring member when the locking arm portion is in a closed state. [Figure 10] FIG. [Figure 11] FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0016] A built-in fixture according to an embodiment of the present invention will be described with reference to Figs. 1 to 11. As shown in Figs. 1 and 2, the built-in fixture 1 according to the embodiment of the present invention is configured as a long and slender shape in which the ratio of the length in the longitudinal direction to the length in the transverse direction is large. The built-in fixture 1 is installed by being embedded in a built-in hole Ca arranged in a ceiling C, which is an example of a mounting part, as shown in Fig. 5. The built-in fixture 1 shown in this embodiment can be mounted not only on a ceiling, but also on a wall surface, under a shelf, or other mounting part. The ceiling C is provided with a built-in hole Ca. The built-in fixture 1 of this embodiment is a built-in wiring duct to which a duct rail DR having a power receiving structure can be attached, to which a lighting fixture can be attached detachably and movably. In this embodiment, as shown in Figs. 2 and 4, a groove 5 for attaching the duct rail DR is provided on the lower side of the upper surface of the built-in fixture 1. The groove 5 is provided in the center of the upper surface end direction and is provided parallel to the longitudinal direction of the built-in fixture 1.

[0017] As shown in Figs. 1, 2 and 5, the embedded fixture 1 includes a fixture body 11 and a mounting fixture 12 for mounting the fixture to a ceiling C in a state where it is embedded in a recess Ca.

[0018] The fixture body 11 is a long, rectangular member with an open bottom side in cross section, and has a space inside for arranging a lighting fixture, as shown in Fig. 2. A groove 5 is provided in the center of the upper surface of the fixture body 11 for attaching a duct rail having a power receiving structure.

[0019] The instrument body 11 is configured to be long, and the length in the longitudinal direction is configured to have a plurality of predetermined lengths. The predetermined lengths are, for example, 1000 mm at the shortest and 1500 mm at the longest.

[0020] The device main body 11 has a device main body 31 and a frame portion 34. The device main body 31 and the frame portion 34 are formed using a metal material such as aluminum having thermal conductivity, taking into consideration heat dissipation and mechanical strength. The device main body 31 is formed to a predetermined length by extrusion molding.

[0021] The frame 34 can restrict the up-down movement of the built-in fixture 1 by sandwiching the ceiling C between the mounting fixture 12 and the frame 34. An elastic member 16 is disposed on the mounting surface side of the frame 34. The elastic member 16 is disposed between the frame 34 and the ceiling C to increase the airtightness between the room and the ceiling C. The frame 34 may be formed separately from the fixture main body 31. When the fixture main body 31 and the frame 34 are formed separately, the frame 34 can be formed in any color and the fixture main body 31 can be made common. This allows the built-in fixture 1 to be provided with a frame 34 of a desired color without painting the fixture main body 31 and the frame 34 in different colors. Further, on the upper surface of the instrument main body 31, an insertion hole 31b is provided for inserting a screw shaft 52 for fixing the mounting fixture 12 (specifically, the shaft support portion 61 of the rotating member 51). The main body 31 and the frame 34 are not limited to aluminum or other metal materials as long as they have the desired thermal conductivity and mechanical strength. The main body 31 is preferably made of a material having thermal conductivity, but it is not essential that the main body 31 has thermal conductivity.

[0022] The fixture body 11 can have end plate portions 81 attached to both longitudinal ends thereof by means of screw members 84. The end plate portions 81 cover the ends of the fixture body 11 and close the open portions at both longitudinal ends of the fixture body 11. The end plate portions 81 are provided with frame portions 82 extending from their lower ends in a direction along the longitudinal direction of the fixture body 11. When the end plate portions 81 are attached to the fixture body 11, the frame portions 82 are provided so as to be continuous with the frame portion 34 of the fixture body 11. An elastic member 83 is provided on the mounting surface side of the frame portion 82. The elastic member 83 is provided between the frame portion 82 and the ceiling C, and enhances the airtightness between the room and the ceiling C. Furthermore, the main device 31 without the end plate 81 attached is configured so that a plurality of the main device 31 can be connected in series by a connecting member (not shown). The connecting member is a metal fitting that serves as a connecting part that connects the ends of the main device 31 to each other, and by fixing the main device 31 with the connecting member, it is possible to configure an embedded device 1 in which the device bodies 11 are arranged in series.

[0023] The space provided inside the fixture body 11 is a space for arranging the duct rail DR, and a groove 5 is provided in the center of the upper surface of the fixture body 11 for mounting the duct rail DR having a power receiving structure. The fixture main body 31 of this embodiment is formed with a width slightly larger than that of the duct rail DR. After the duct rail DR is placed in the fixture main body 31, it is attached using a screw (not shown). At this time, the tip of the screw and a part of the threaded portion are placed in the groove 5 and fixed. It is preferable that the lower surface (surface on the room side) of the duct rail DR is arranged so as to be located lower than the frame portion 34. By arranging it in this manner, it is possible to prevent interference between the duct rail DR and the mounting structure (e.g., plug, etc.) of the fixture such as a lighting fixture (not shown) to be attached to the duct rail DR.

[0024] The mounting fixture 12 has a rotating member 51 and a screw shaft 52. The rotating member 51 is a member that can rotate so as to engage with the upper edge of the embedding hole Ca when mounted. When not mounted, the rotating member 51 is disposed inside the width direction of the fixture body 11 as shown in Figs. 7 and 9. More specifically, as shown in Fig. 5, when the fixture body 11 is mounted, a locking arm portion 62 of the rotating member 51 described later abuts on the upper surface of the ceiling C. The fixture body 11 is mounted on the ceiling C by sandwiching the ceiling C between the locking arm portion 62 and the frame portion 34. As shown in Fig. 5, the frame portion 34 is disposed at a position overlapping with the frame portion 82. The screw shaft 52 is a shaft that rotatably supports the rotating member 51 and is a member for mounting the rotating member 51 to the fixture body 11. The fixture body 11 is provided with a predetermined number of insertion holes (not shown) (six in this embodiment) at positions corresponding to the screw shaft 52. The screw shaft 52 is inserted into an insertion hole (not shown) of the fixture body 11. A head 52a for inserting a tool is provided on the lower surface of the screw shaft 52. The head 52a is exposed on the indoor side (the lower surface side in FIG. 2) of the fixture body 11, and an operator can rotate the head 52a using a tool to rotate the screw shaft 52. As a result, the screw shaft 52 is arranged rotatably even when the embedded fixture 1 is embedded in a ceiling C arranged on a ceiling or the like.

[0025] The rotating member 51 has a shaft support portion 61 to which the screw shaft 52 is attached, and a locking arm portion 62 attached to the screw shaft 52. As shown in Fig. 10, the shaft support portion 61 is formed by bending a plate-like member, and has an upper surface portion 65, a lower surface portion 66, a side surface portion 67 connecting the upper surface portion 65 and the lower surface portion 66, and a lower attachment portion 68 extending downward from the end of the lower surface portion 66 opposite the side surface portion 67.

[0026] The upper surface portion 65 is a portion that supports the upper end side of the screw shaft 52, and has an insertion hole 65a for inserting the screw shaft 52. The upper end of the screw shaft 52 inserted into the insertion hole 65a protrudes further upward from the upper surface. A screw fixing cap 69 is attached to the upper end of the screw shaft 52. The screw fixing cap 69 is a member that rotatably supports the upper end of the screw shaft 52 on the upper surface.

[0027] The lower surface portion 66 is a portion that supports the lower end side of the screw shaft 52, and has an insertion hole for inserting the screw shaft 52. In this embodiment, the insertion hole is provided at a position that overlaps with the insertion hole 65a shown in FIG. 11 in a plan view. The insertion hole of the instrument body 11, the insertion hole 65a of the upper surface portion, and the insertion hole of the lower surface portion are provided at positions that overlap in a plan view. In other words, the insertion hole of the instrument body 11, the insertion hole 65a of the upper surface portion, and the insertion hole of the lower surface portion are provided coaxially. The screw shaft 52 is inserted into the insertion hole of the instrument body 11, the insertion hole 65a of the upper surface portion, and the insertion hole of the lower surface portion. As a result, the screw shaft 52 is clamped by the upper surface portion 65 and the lower surface portion 66 and rotatably supported.

[0028] The side surface portion 67 is a plate-like portion that is continuous at its upper end with the upper surface portion 65 and at its lower end with the lower surface portion 66, and in this embodiment, is disposed on the inner side in the width direction in a side cross-sectional view. The side surface portion 67, the upper surface portion 65, and the lower surface portion 66 are formed by bending a single plate.

[0029] A lower mounting portion 68 extends downward from the end of the lower surface portion 66 opposite to the surface continuous with the side surface portion 67. In a side view, the lower mounting portion 68 and the lower surface portion 66 are provided so as to fit along a corner of the instrument main body 31, and in this embodiment, the interior angle between the lower mounting portion 68 and the lower surface portion 66 is formed to be approximately 90 degrees. A fixing screw insertion hole 68a for inserting a fixing member 70 is provided at the joint between the lower mounting portion 68 and the lower surface portion 66.

[0030] The shaft support portion 61 is attached to a corner portion of the main body 31 of the instrument body 11. The corner portion of the instrument body 11 has a screw groove 31c provided along the longitudinal direction of the instrument body 11 so that the side surface in the width direction is open. When the shaft support portion 61 is disposed at the corner portion of the main body 31, a fixing screw insertion hole 68a formed in the lower mounting portion 68 overlaps with a part of the screw groove 31c. The shaft support portion 61 is attached to the corner portion by inserting a fixing member 70 into the screw groove 31a and the fixing screw insertion hole 68a.

[0031] Further, a locking arm portion 62 is journaled on the screw shaft 52 journaled on the journal support portion 61. The locking arm portion 62 is a member made by bending a plate, and has a locking end portion 76 which is a portion that comes into contact with the upper surface of the ceiling C when the fixture body 11 is attached, and an arm body portion 77 which is journaled on the screw shaft 52. One end of a spring member 75 (described later) is fixed to the locking end portion 76 by a fixing screw 78.

[0032] The arm body 77 is formed of a plate-like member. A screw shaft hole 77a is provided on the plate surface of the arm body 77. By screwing the screw shaft 52 into the screw shaft hole 77a, the arm body 77 is arranged parallel to the upper surface 65 and the lower surface 66 of the shaft support 61. By rotating the screw shaft 52, the arm body 77 can move up and down along the screw shaft 52. A resin (polyacetal resin in this embodiment) washer 80 is attached to the upper surface side of the arm body 77, which prevents excessive load from being applied between the upper surface of the arm body 77 and the lower surface of the upper surface 65 of the shaft support 61 when the arm body 77 moves to the uppermost position and improves adhesion. This prevents unnecessary load from being applied between the locking arm portion 62 and the shaft support portion 61 when changing the position of the locking arm portion 62 from an open state (a state in which the arm main body portion 77 is at a position of approximately 90 degrees with respect to the shaft support portion 61 as in FIG. 8) to a closed state (a state in which the arm main body portion 77 is at a position overlapping with the shaft support portion 61 as in FIG. 9). In addition, when the locking arm portion 62 is in a closed position, appropriate friction is generated between the upper surface of the arm main body portion 77 and the lower surface of the upper surface portion 65 of the shaft support portion 61, and the locking arm portion 62 can easily maintain the closed position against the restoring force of the spring member 75 described later.

[0033] As shown in FIG. 11, when the locking arm 62 is in a closed state, the abutment portion 77c that abuts against the side portion 67 of the arm body 77 is inclined at an inclination angle θ3. The inclination angle θ3 is an inclination angle from a plane parallel to the surface of the locking end 76 in a plan view. By forming the abutment portion 77c inclined with respect to the surface of the locking end 76, the position of the locking end 76 can be arranged closer to the side portion 67 of the shaft support portion 61 when the locking arm 62 is in a closed state. The inclination angle θ3 is preferably 2 to 5°. With this configuration, the side of the locking end 76 on which the fixing screw 78 is arranged is arranged closer to the instrument body 11 than the other side. This makes it possible to prevent the fixing screw 78 from protruding beyond the width of the instrument body 11.

[0034] The locking end 76 is formed of a plate-like member perpendicular to the arm main body 77, and is a portion to which the tip of the spring member 75 is fixed. The tip of the spring member 75 can be fixed to the locking end 76 by attaching a fixing screw 78, which is a fixing member, to a fixing screw hole 76a provided in the locking end 76.

[0035] The spring member 75 of this embodiment is made of a torsion spring, and is formed in a shape having two arms extending from both ends of a coil portion 75a formed by winding a wire rod in a cylindrical shape. The spring member 75 generates a torsion moment around the central axis of the coil portion 75a. In the spring member 75 of this embodiment, when a load is applied so that the two arms approach each other and then released, the elastic force (restoring force) displaces the two arms so that they spread apart in the direction of rotation about the central axis of the coil portion 75a. One of the two ends is fixed to the locking end portion 76 by a fixing member. The other end (the end of the shaft support portion side arm portion 75b) abuts against the outer surface of the side portion of the shaft support portion 61. The end of the shaft support portion side arm portion 75b of the spring member 75 is processed to have a curved surface portion (shaft support portion side end portion) 75c. That is, the curved surface portion 75c is formed by processing the wire rod into an arc shape. The curved surface portion 75c is configured to be movable while being in contact with the shaft support portion 61.

[0036] Next, a method for installing the embedded device 1 using the mounting fixture 12 will be described. The fixture body 11 of the embedded fixture 1 is inserted into the embedding hole Ca in the ceiling C. At this time, the locking arm portion 62 of the mounting fixture 12 is closed. When the locking arm portion 62 is closed, the locking arm portion 62 can be inserted into the embedding hole Ca. In this state, the arm body portion 77 of the locking arm portion 62 has moved to the uppermost position. When the arm body portion 77 is in the uppermost position, a frictional force is generated between the arm body portion 77 and the upper surface of the shaft support portion 61. When this frictional force is greater than the restoring force (biasing force) of the spring member 75, the locking arm portion 62 is held in a closed state. At this time, the curved surface portion 75c, which is the end portion of the spring member 75 on the shaft support portion side, is disposed between both side surfaces extending in the longitudinal direction of the fixture main body 31 in a plan view. Since the curved surface portion 75c is not disposed outside both side surfaces of the fixture main body 31 in a plan view, it is possible to prevent the curved surface portion 75c of the spring member 75 from coming into contact with any part of the ceiling C and becoming deformed. This prevents improper installation of the mounting fixture 12 due to deformation of the spring member 75.

[0037] The winding angle of the spring member 75 in this embodiment refers to the angle between the two ends and the coil portion 75a. The winding angle of the spring member 75 when the locking arm portion 62 is in an open state (see FIG. 8) is θ1, and the winding angle of the spring member 75 when the locking arm portion 62 is in a closed state (see FIG. 9) is θ2. The rotating member 51 in this embodiment is configured so that the winding angle θ2 when the locking arm portion 62 is in a closed state is 2 / 3 or less of the winding angle θ1 when the locking arm portion is in an open state. In other words, the angle of displacement when the locking arm portion 62 is changed from an open state to a closed state is 1 / 3 or more of θ1. By configuring in this manner, it is possible to ensure a sufficient elastic force (torque) to displace the arm body portion 77. In addition, by forming the spring member 75 from a torsion spring, it is possible to reduce the space required for arranging the spring member 75. In addition, by adjusting the thickness of the wire, the number of turns of the coil portion 75a, or the winding angle, it is possible to set a desired torque or a displacement range of the arm main body portion 77.

[0038] Next, the screw shaft 52 of the mounting fixture 12 is rotated using a tool such as a screwdriver. When the screw shaft 52 is rotated, the arm body 77 moves downward from the state shown in FIG. 6 to the state shown in FIG. 5. As the arm body 77 and the upper surface 65 of the shaft support 61 move away from each other, the frictional force between them decreases, and when they are completely separated, the frictional force between the arm body 77 and the upper surface 65 disappears. As a result, the restoring force of the spring member 75 presses the locking end 76 in a direction away from the shaft support side arm 76b, and the arm body 77 is rotated approximately 90 degrees around the screw shaft 52 (the locking arm 62 is in an open state).

[0039] Furthermore, when the screw shaft 52 of the mounting fixture 12 is rotated with a tool such as a screwdriver, the arm body 77 moves downward. When the arm body 77 moves to the bottom end, the bottom end of the engaging end 76 abuts against the ceiling C. This fixes the fixture body 11 to the ceiling C. An elastic member 16 is provided between the fixture main body 31 of the embedded fixture 1 and the ceiling C, which can improve the airtightness between the room and the ceiling C.

[0040] A plurality of mounting fixtures 12 (six in this embodiment) are arranged along the longitudinal direction of the instrument body 11. In this embodiment, two pairs of mounting fixtures 12·12 are arranged at three locations at approximately equal intervals along the longitudinal direction of the instrument body 11. The two pairs of mounting fixtures 12·12 are arranged so as to be rotated 180 degrees in a plan view. The screw shafts 52·52 of the two pairs of mounting fixtures 12·12 are arranged so as to be aligned in the width direction of the instrument body 11. With this configuration, when an operator rotates the screw shafts 52 of the mounting fixtures 12, the heads 52a of the screw shafts 52 of the two pairs of mounting fixtures 12·12 are aligned and not scattered, improving workability even in installation work at high places. In addition, the two pairs of mounting fixtures 12·12 can be prepared from parts of the same shape.

[0041] Furthermore, a plurality of instrument bodies 11 can be connected together using a connecting member. When connecting instrument bodies 11, a plurality of instrument bodies 11 are arranged along the longitudinal direction without attaching the end plate portions 81, and the ends of the instrument bodies 11 are connected together using a connecting member. As a result, a plurality of device bodies 11 are arranged in the longitudinal direction via the connecting members. Also, device bodies 11 configured to a predetermined length can be connected for installation, making it possible to provide an embedded device 1 of a desired length.

[0042] As described above, the mounting structure of the embedded type device 1 according to this embodiment is mounted in the embedding hole Ca provided in the ceiling C, and includes the device body 11 and the mounting fixture 12 for mounting the device body 11 by abutting against the upper surface of the ceiling C. The mounting fixture 12 has the screw shaft 52 and the rotating member 51 that can rotate about the screw shaft 52. The rotating member 51 has a shaft support portion 61 to which the screw shaft 52 is attached, a locking arm portion 62 attached to the screw shaft 52, and a spring member 75. The locking arm portion 62 has an arm body portion 77 that can move along the screw shaft 52 by the rotation of the screw shaft 52, and a locking end portion 76 that can abut against the upper surface of the ceiling C. One end of the spring member 75 is fixed to the locking end portion 76, and the other end abuts against the shaft support portion 61. With this configuration, the locking arm portion 62 rotates due to the restoring force of the spring member 75, and the locking end portion 76 moves to the outside of the instrument body 11. Since the spring member 75 is not attached to the screw shaft 52, the locking arm portion 62 can be moved smoothly in the up and down directions.

[0043] Furthermore, the shaft support portion 61 may have an upper surface portion 65 to which the screw shaft 52 is attached, and may be configured so that frictional force is generated between the locking arm portion 62 and the upper surface portion 65 of the shaft support portion 61 . With this configuration, a frictional force is generated between the locking arm portion 62 and the shaft support portion 61, and the locking arm portion 62 can be held in the closed state by resisting the elastic force of the spring member 75. Moreover, the frictional force is reduced by moving the locking arm portion 62 downward, and the restoring force of the spring member 75 allows the locking arm portion 62 to be easily rotated to the open state.

[0044] In addition, the rotating member 51 can set the locking arm portion 62 to an open state or a closed state by rotating the locking arm portion 62. The winding angle θ2 of the spring member 75 when the locking arm portion 62 is closed is equal to or less than 2 / 3 of the winding angle θ1 when the locking arm portion 62 is open. With this configuration, a torque sufficient to displace the arm body 77 can be obtained.

[0045] The end of the shaft support side arm 75b of the spring member 75 which abuts against the shaft support 61 is machined to have a curved surface 75c, and the curved surface 75c is configured to be movable while abutting against the shaft support 61. With this configuration, the curved surface 75c of the shaft support side arm 75b of the spring member 75 comes into contact with the side surface 67 of the shaft support 61, so that the spring member 75 can slide without damaging the surface of the shaft support 61. This allows the locking arm 62 to open and close smoothly.

[0046] Furthermore, when the locking arm portion 62 is in a closed state, the curved portion 75c of the shaft support portion side arm portion 75b of the spring member 75 is positioned between both side surfaces extending in the longitudinal direction of the instrument body 11 (instrument main body 31) in a plan view. By configuring it in this manner, the curved portion 75c, which is the end of the axial support portion side arm portion 75b of the spring member 75, is not exposed to the outside from the side surface extending in the longitudinal direction of the fixture body 11 in a planar view, so that deformation due to contact between the spring member 75 and the ceiling C can be prevented when the fixture body 11 is placed on the ceiling C.

[0047] Moreover, the spring member 75 is fixed at the locking end portion 76 by a fixing screw 78, which is a fixing member. When the locking arm portion 62 is in a closed state, the side of the locking end portion 76 having the fixing screw 78 is disposed closer to the instrument body 11 in a plan view. By configuring in this manner, the tip of the fixing screw 78 can be positioned closer to the fixture body 11, thereby preventing contact between the tip of the fixing screw 78 and the ceiling C when placing the fixture body 11 on the ceiling C, and preventing damage to the ceiling C and the mounting fixture 12.

[0048] Moreover, the instrument body 11 is configured to be long, and the rotating members 51 are provided in at least two rows along the longitudinal direction. With this configuration, the tool body 11 can be stably disposed on the mounting portion by the plurality of rotating members 51. [Explanation of symbols]

[0049] 1 Recessed fixtures 11. Equipment body 12 Mounting fixture 16 Elastic member 31 Mainly equipment 34 Frame 51 Rotating members 52 Screw shaft 61 Shaft bearing part 62 Locking arm part 65 Top part 66 Bottom part 67 Side part 68 Lower mounting part 69 Screw fixing cap 70 Fixing member 75 Spring material 75a Coil section 75b Shaft support side arm 75c Curved part (shaft support side end) 76 Locking end 77 Arm body 78 Fixing screw C Ceiling Ca filling hole θ1 Winding angle when the locking arm is open θ2: The winding angle when the locking arm is closed

Claims

1. A mounting structure for a recessed type fixture to be mounted in a recessed hole provided in a ceiling, The instrument body, a mounting tool for mounting the fixture body by contacting the upper surface of the ceiling, The mounting tool has a screw shaft and a rotating member that can rotate around the screw shaft, The rotating member has a shaft support portion to which the screw shaft is attached, a locking arm portion to which the screw shaft is attached, and a spring member, The locking arm portion has an arm main body portion that can move along the screw shaft by rotation of the screw shaft, and a locking end portion that can abut against the upper surface of the ceiling, The spring member has one end fixed to the locking end and the other end abutting against the shaft support portion. A mounting structure for a built-in device, comprising:

2. The shaft support portion has an upper surface portion to which the screw shaft is attached, When the locking arm portion abuts against the upper surface portion of the shaft support portion, a frictional force is generated between the locking arm portion and the upper surface portion of the shaft support portion.

2. The mounting structure for a lighting fixture embedded type fixture according to claim 1.

3. The rotating member can place the locking arm portion in an open state or a closed state by rotating the locking arm portion, The spring member has a winding angle when the locking arm portion is closed that is equal to or smaller than 2 / 3 of a winding angle when the locking arm portion is open.

2. The mounting structure for an embedded type device according to claim 1.

4. The tip of the spring member that comes into contact with the shaft support portion is processed to have a curved surface portion, and the curved surface portion is configured to be movable while coming into contact with the shaft support portion.

2. The mounting structure for an embedded type device according to claim 1.

5. When the locking arm portion is in a closed state, the other end of the spring member is disposed between both side surfaces extending in the longitudinal direction of the instrument body in a plan view.

4. The mounting structure for an embedded type device according to claim 3.

6. The spring member is fixed at the locking end by a fixing member, When the locking arm portion is in a closed state, the fixing member is disposed closer to the instrument main body in a plan view.

4. The mounting structure for an embedded type device according to claim 3.

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