Component attaching / detaching structure of opening / closing device

Abstract

To provide a component attaching / detaching structure of an opening / closing device capable of improving workability when attaching / detaching a component.SOLUTION: A component attachment / detachment structure of an opening / closing device, which includes a shielding member and a support member 2 that suspends the shielding member for support, includes the support member 2 having a locked portion 10, an attachment component 3 having a plurality of locking portions 42 that can be locked to the locked portion 10 and provided with a release operation portion that can perform a release operation of a locked state locked to the locked portion 10, is attached to the support member 2 by being in the locked state, and can be detached from the support member 2 by the locked state being released, and a release tool that can perform a release operation of the release operation portions of the plurality of locking portions 42 at the same time, and can detach the attachment component 3 from the support member 2 by the locked states of the plurality of locking portions 42 being released at the same time.SELECTED DRAWING: Figure 8

Description

[Technical field]

[0001] The present invention relates to a component attachment / detachment structure for an opening / closing device such as a blind. [Background technology]

[0002] The following Patent Document 1 discloses a blind including a head box and a rotating device detachably fixed inside the head box. The rotating device includes a lifting drum, a rotating drum, and a drum base that rotatably supports the lifting drum and the rotating drum. The drum base has two claw-shaped locking parts formed on each of one side and the other side in the front-to-rear direction, and each locking part is locked to a rib-shaped locked part formed on the inside of the front wall and the inside of the rear wall of the head box, thereby detachably fixed to the head box. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2016-23532 A Summary of the Invention [Problem to be solved by the invention]

[0004] In the case of conventional blinds, in order to remove the rotating device from the head box, it is necessary to release all of the locking parts of the drum base. Therefore, for example, when releasing the locking parts on one side of the drum base in the front-rear direction and then releasing the locking parts on the other side in the front-rear direction, the locking parts on one side in the front-rear direction may become locked again, leaving room for improvement in terms of workability.

[0005] The present invention has been made in consideration of the above problems, and has an object to provide a component mounting and dismounting structure for a switching device that can improve the ease of installation and removal of components. [Means for solving the problem]

[0006] The inventor believed that the above problem could be solved by configuring the locking portion and the locked portion so that the locked state of multiple locking portions on the part to be removed could be released simultaneously, and based on this, he came to invent the following new part attachment / detachment structure for an opening and closing device.

[0007] (1) The part attachment / detachment structure for an opening / closing device according to the present invention is a part attachment / detachment structure for an opening / closing device including a shielding material and a support member for suspending and supporting the shielding material, the part comprising: the support member having an engaging portion; an attachment part having a plurality of locking portions that can be engaged with the locking portions and that are provided with a release operating portion that can be operated to release the locked state in which the attachment part is locked to the locking portions, the attachment part being attached to the support member when in the locked state and being removable from the support member when the locking state is released; and a release device that can simultaneously release the release operating portions of the plurality of locking portions and simultaneously releases the locked states of the plurality of locking portions, thereby allowing the attachment part to be removed from the support member.

[0008] (2) In the above (1), it is preferable that the locking portion can be tilted in a direction to release the locked state by pressing the release operating portion, and that the release tool has an operable operating portion and a plurality of legs protruding from the operating portion, the number of which is at least equal to the number of the locking portions, and that the plurality of legs can simultaneously press the release operating portions of the plurality of locking portions by operating the operating portion.

[0009] (3) In the above (2), it is preferable that the release operation portion is a groove that forms a gap between the locked portion and the locking portion in the locked state, and that a part of the leg can be inserted into the groove and pressed by the leg so that the locking portion tilts in the direction of releasing the locked state.

[0010] (4) In the above (3), it is preferable that the leg portion has a wide portion provided on the base end side, an inclined portion tapered from the tip of the wide portion, and a narrow portion extending from the tip of the inclined portion.

[0011] (5) In any one of the above (1) to (4), it is preferable that the opening and closing device is a blind, and the support member is a head box that suspends and supports the shielding material of the blind.

[0012] (6) In the above (5), the engaging portion is a pair of ribs protruding toward the inside of the support member from one wall surface and the other wall surface in the short direction of the support member, and it is preferable that the engaging portion is formed at least one on each of one side and the other side in the short direction of the mounting part so as to be able to engage with each of the pair of ribs.

[0013] (7) In the above (5) or (6), it is preferable that the mounting part is a drum receiver that rotatably supports a drum for opening and closing the shielding material, and the release tool is removably attached to the drum receiver as a drum cover that covers the drum. Effect of the Invention

[0014] The component mounting / detaching structure for a switchgear according to the present invention is configured to simultaneously release the locked state between the locked portion of the support member and the locking portion of the mounting component, thereby providing a component mounting / detaching structure for a switchgear that can improve operability when mounting and detaching components. [Brief description of the drawings]

[0015] [Figure 1] 1 is a front view showing an example of a switching device to which a component mounting / detaching structure for a switching device according to a first embodiment of the present invention is applied. [Diagram 2] 1 is a schematic perspective view showing a mounting part of a part mounting structure for a switchgear according to a first embodiment of the present invention, viewed from above. FIG. [Diagram 3] 1 is a schematic perspective view showing a mounting part of a part mounting structure for a switchgear according to a first embodiment of the present invention, viewed from below. FIG. [Figure 4]5A to 5C are explanatory diagrams showing a process of attaching an attachment part to a support member, in which (a) shows the state before attachment, (b) shows the state during attachment, and (c) shows the state after attachment. [Diagram 5] FIG. 4 is a schematic longitudinal sectional view showing a state in which the mounting part is attached to the support member, with a part of the mounting part being shown enlarged; [Figure 6] 1 is a schematic perspective view showing a release tool of a part mounting and detaching structure for a switchgear according to a first embodiment of the present invention; [Figure 7] FIG. 11 is an explanatory diagram showing the process in which an attachment part is removed from a support member by a release tool, where (a) shows the attachment part attached to the support member, and (b) shows the attachment part in the middle of being removed from the support member. [Figure 8] FIG. 11 is an explanatory diagram showing the process of an attachment part being removed from a support member by a release tool, where (a) shows the attachment part in the middle of being removed from the support member, and (b) shows the attachment part ready to be removed from the support member. [Figure 9] FIG. 11 is a schematic perspective view showing a mounting part of a part mounting structure for a switchgear according to a second embodiment of the present invention. [Figure 10] FIG. 11 is a schematic perspective view showing a release tool of a part mounting and detaching structure for a switchgear according to a second embodiment of the present invention. [Figure 11] 11A and 11B are explanatory diagrams showing the relationship between the mounting part and the release tool of the part attachment / detachment structure of an opening / closing device according to the third embodiment of the present invention, in which (a) shows the state in which the release tool is attached to the mounting part, (b) shows the state in which the release tool has been removed from the mounting part, and (c) shows the state in which the release tool removed from the mounting part is being used. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0016] Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

[0017] As shown in Figs. 1 to 8, the part attachment / detachment structure of an opening / closing device 1 of the first embodiment includes a support member 2, an attachment part 3, and a release tool 4. The opening / closing device 1 to which the part attachment / detachment structure of the first embodiment is applied includes a shielding material 5 and a support member 2 that suspends and supports the shielding material 5. As shown in Fig. 1, the opening / closing device 1 is, for example, a blind installed inside an opening such as a window frame of a building. The opening / closing device 1 is installed inside a room that is partitioned off from the outside of the building by window glass or the like. When the opening / closing device 1 is a blind, the support member 2 is a head box that suspends and supports the shielding material 5 of the blind, and the attachment part 3 is a drum receiver that rotatably supports a drum for opening and closing the shielding material 5. In this specification, when the opening and closing device 1, which is a blind, is installed, the longitudinal direction of the support member 2, which is a head box, is defined as the left-right direction, and the direction perpendicular to the up-down direction and the left-right direction is defined as the front-rear direction. In addition, in the front-rear direction, the indoor side is defined as the front, and the outdoor side is defined as the rear.

[0018] The support member 2, which is a head box, has a C-shaped channel shape and has a bottom wall 6, a front wall 7, and a rear wall 8. The bottom wall 6 is a generally rectangular plate that is elongated in the left-right direction and is arranged with the plate surface facing up and down. The bottom wall 6 has a plurality of through holes 9 that penetrate in the up-down direction in a portion where the mounting parts 3 described later are arranged. The through holes 9 are generally rectangular in plan view. The front wall 7 is a generally rectangular plate that is elongated in the left-right direction. The front wall 7 is provided at the front end of the bottom wall 6 with the plate surface facing forward and backward. The rear wall 8 is a generally rectangular plate that is elongated in the left-right direction. The rear wall 8 is provided at the rear end of the bottom wall 6 with the plate surface facing forward and backward. The bottom wall 6, the front wall 7, and the rear wall 8 are integrally formed, but may be formed by connecting each wall portion.

[0019] The support member 2 has a pair of front and rear locked portions 10, 10 to which the mounting part 3 is locked. In the first embodiment, the locked portion 10 located at the front of the pair of locked portions 10, 10 is a plate-like shape extending from a vertical midpoint of the inner surface of the front wall portion 7 to the inside of the support member 2, and is arranged with the plate surface facing up and down. The locked portion 10 on the front side is a substantially rectangular plate-like shape elongated in the left-right direction, and extends continuously from one end to the other end of the support member 2 in the left-right direction. The locked portion 10 located at the rear of the pair of locked portions 10, 10 is a plate-like shape extending from a vertical midpoint of the inner surface of the rear wall portion 8 to the inside of the support member 2, and is arranged with the plate surface facing up and down. The locked portion 10 on the rear side is a substantially rectangular plate-like shape elongated in the left-right direction, and extends continuously from one end to the other end of the support member 2 in the left-right direction. Therefore, the locked portions 10 are a pair of ribs protruding toward the inside of the support member 2 from one wall surface and the other wall surface in the short side direction of the support member 2.

[0020] The support member 2 thus configured is fixed to the upper surface of the window frame or the ceiling via a plurality of brackets 11. In this way, the opening and closing device 1, which is a blind, is disposed inside the window. A shielding material 5 is suspended from the support member 2 via a plurality of ladder cords 12.

[0021] A plurality of tilt drums 13 and a plurality of winding drums 14 are rotatably provided within the support member 2. Each tilt drum 13 and each winding drum 14 is provided within the support member 2 via an attachment part 3 that serves as a drum receiver. The tilt drum 13 and the winding drum 14 are rotatably supported by the attachment part 3. While held by the attachment part 3, the tilt drum 13 and the winding drum 14 are arranged coaxially.

[0022] The mounting part 3 has a lower wall portion 15, a first wall portion 16, a second wall portion 17, a third wall portion 18, a fourth wall portion 19, and a fifth wall portion 20. The lower wall portion 15 is a substantially rectangular plate-like portion, and is disposed with the plate surface facing up and down. The lower wall portion 15 has a plurality of insertion holes 21 penetrating in the vertical direction. The insertion holes 21 are substantially rectangular in plan view. A substantially rectangular frame-shaped protrusion 22 is provided around the insertion hole 21. The protrusion 22 protrudes downward from the lower wall portion 15. The protrusion 22 has a fitting portion 23 located on the base end side and an introduction portion 24 located on the tip side. The fitting portion 23 is substantially rectangular frame-shaped and provided on the lower wall portion 15. The introduction portion 24 is substantially rectangular frame-shaped and provided at the tip of the fitting portion 23. The outer peripheral surface of the introduction portion 24 is tapered. Specifically, the outer circumferential surface of the introduction portion 24 slopes inwardly of the introduction portion 24 as it extends downward.

[0023] The first wall portion 16 stands up from the lower wall portion 15 along the longitudinal direction of the support member 2. Specifically, the first wall portion 16 is a substantially rectangular plate-like member, and is provided at the front end of the lower wall portion 15 with its plate surface facing forward and backward. The left-right length of the first wall portion 16 is smaller than the left-right length of the lower wall portion 15. The first wall portion 16 is located on the left side of the lower wall portion 15. The second wall portion 17 stands up from the lower wall portion 15 along the lateral direction of the support member 2. Specifically, the second wall portion 17 is a substantially rectangular plate-like member, and is provided at the left end of the lower wall portion 15 with its plate surface facing forward and backward. The third wall portion 18 stands up from the lower wall portion 15 along the longitudinal direction of the support member 2. Specifically, the third wall portion 18 is a substantially rectangular plate-like member, and is provided at the rear end of the lower wall portion 15 with its plate surface facing forward and backward. The length of the third wall portion 18 in the left-right direction is smaller than the length of the lower wall portion 15 in the left-right direction. The third wall portion 18 is located on the left side of the lower wall portion 15. The fourth wall portion 19 stands up from the lower wall portion 15 along the short side direction of the support member 2. Specifically, the fourth wall portion 19 is a substantially rectangular plate-like member, and is provided in the substantially central portion of the lower wall portion 15 with its plate surface facing left and right. The fourth wall portion 19 is disposed so as to face the second wall portion 17. The fifth wall portion 20 stands up from the lower wall portion 15 along the short side direction of the support member 2. Specifically, the fifth wall portion 20 is a substantially rectangular plate-like member, and is provided at the right end portion of the lower wall portion 15 with its plate surface facing left and right. The fifth wall portion 20 is disposed so as to face the fourth wall portion 19. Although the lower wall portion 15, the protruding portion 22, the first wall portion 16, the second wall portion 17, the third wall portion 18, the fourth wall portion 19 and the fifth wall portion 20 are integrally formed, they may also be formed by connecting each portion together.

[0024] The winding drum 14 rotatably supported by the mounting part 3 has a conventionally known configuration. Typically, the winding drum 14 has a winding drum main body 25 and a winding drum piece 26. The winding drum main body 25 has a cylindrical shaft portion 27, a plate-shaped flange portion 28 provided on one axial end side of the shaft portion 27, and a boss portion 29 provided on one axial end side of the shaft portion 27. The shaft portion 27 is cylindrical and extends in the left-right direction. The flange portion 28 is disk-shaped and provided on the right end of the shaft portion 27 so as to protrude radially outward. The boss portion 29 is columnar and provided on the right end of the shaft portion 27 so as to protrude rightward from the flange portion 28. The boss portion 29 has a through hole (not shown) that penetrates in the axial direction in the center. The through hole of the boss portion 29 communicates with an inner hole 30 of the shaft portion 27. The shaft portion 27, the flange portion 28, and the boss portion 29 are integrally formed, but may be formed by connecting them together. The winding drum piece 26 has a cylindrical shaft portion 31 and a flange portion 32 provided on one end side of the shaft portion 31 in the axial direction. The shaft portion 31 is in the shape of a short cylinder extending in the left-right direction. The flange portion 32 is in the shape of a disk, and is provided on the left end portion of the shaft portion 31 so as to protrude radially outward. The shaft portion 31 and the flange portion 32 are integrally formed, but may be formed by connecting them together.

[0025] The winding drum piece 26 is detachably attached to the winding drum body 25. Specifically, the left surface of the flange 32 of the winding drum piece 26 is attached to the right surface of the boss 29 of the winding drum body 25, thereby providing the winding drum piece 26 to the winding drum body 25. As a result, the boss 29 of the winding drum body 25 is disposed between the flange 28 of the winding drum body 25 and the flange 32 of the winding drum piece 26. The winding drum 14 having such a configuration is rotatably supported by the mounting part 3, with the left end of the shaft 27 of the winding drum body 25 being rotatably provided on the second wall 17 and the right end of the shaft 31 of the winding drum piece 26 being rotatably provided on the fourth wall 19.

[0026] The tilt drum 13 rotatably supported by the mounting part 3 has a conventionally known configuration. Typically, the tilt drum 13 has a drum body 33, a rotating body 34, and a clutch spring 35. The drum body 33 is a circular box-like shape that opens to the right. The rotating body 34 is a cylinder extending in the left-right direction. The clutch spring 35 is wound around the outer circumferential surface of the rotating body 34. The tilt drum 13 having such a configuration is rotatably supported by the mounting part 3 in a state in which the rotating body 34 provided with the clutch spring 35 is housed in the drum body 33. In a state in which the tilt drum 13 is supported by the mounting part 3, the shaft portion 27 of the winding drum body 25 penetrates the drum body 33 and the rotating body 34, and the rotating body 34 of the tilt drum 13 can rotate integrally with the winding drum 14. When the rotating body 34 rotates in this manner, the drum body 33 can be rotated by the clutch spring 35. Therefore, the tilt drum 13 can rotate integrally with the winding drum 14.

[0027] One end of the ladder cord 12 is anchored to the tilt drum 13 in the front-rear direction. When the tilt drum 13 has the above-mentioned configuration, one end of the ladder cord 12 is anchored to the drum body 33. A plurality of shielding materials (slats) 5 are supported on the ladder cord 12. Specifically, the shielding materials 5 are supported on each middle cord of the ladder cord 12 such that the longitudinal direction of the shielding materials 5 is aligned with the left-right direction. In a state in which the plurality of shielding materials 5 are supported on the ladder cord 12, the plurality of shielding materials 5 are arranged at intervals in the up-down direction. In this manner, the plurality of shielding materials 5 are suspended from the support member 2.

[0028] A lifting tape 36, which is a lifting member for lifting and lowering the shielding material 5, is connected to the winding drum 14 so as to be capable of being wound and unwound. When the winding drum 14 has the above-mentioned configuration, the lifting tape 36 can be wound around the outer circumferential surface of the boss portion 29. One end of the lifting tape 36 is anchored to the winding drum 14. The lifting tape 36 is a member separate from the ladder cord 12, and supports the bottom rail 37 in a suspended manner so as to be liftable and lowerable on the support member 2. The bottom rail 37 is provided at the other end of the lifting tape 36. The other end of the ladder cord 12 is anchored to the bottom rail 37 from the front-rear direction. In this way, the bottom rail 37 is suspended from the support member 2. The bottom rail 37 suspended from the support member 2 is located below the shielding material 5 arranged at the lowest position.

[0029] As shown in FIG. 1, a rotating shaft 38 is rotatably provided in the support member 2. When the rotating shaft 38 is provided in the support member 2, the axial direction of the rotating shaft 38 is along the longitudinal direction of the support member 2. When the rotating shaft 38 is provided in the support member 2, it can rotate around its own axis. When the rotating shaft 38 is provided in the support member 2, it passes through the tilt drum 13 and the winding drum 14. When the rotating shaft 38 passes through the tilt drum 13 and the winding drum 14, the tilt drum 13 and the winding drum 14 can rotate integrally with the rotating shaft 38. When the tilt drum 13 and the winding drum 14 are configured as described above, the rotating shaft 38 passes through the inner hole 30 of the shaft portion 27 of the winding drum main body 25, the through hole of the boss portion 29 of the winding drum main body 25, and the inner hole of the shaft portion 31 of the winding drum piece 26. At this time, the winding drum 14 is connected to the rotating shaft 38 so as to rotate integrally with the winding drum 14. As described above, the tilt drum 13 can rotate integrally with the winding drum 14. Therefore, the tilt drum 13 can rotate integrally with the rotating shaft 38.

[0030] In the illustrated example, a plurality of mounting parts 3, each having a tilt drum 13 and a winding drum 14, are provided within the support member 2. Therefore, the rotating shaft 38 penetrates the tilt drum 13 and the winding drum 14 provided on each mounting part 3, and the tilt drum 13 and the winding drum 14 through which the rotating shaft 38 penetrates can rotate integrally with the rotating shaft 38. This allows the rotating shaft 38 to simultaneously transmit its rotation to the tilt drum 13 and the winding drum 14 provided on each mounting part 3.

[0031] With the rotating shaft 38 provided in the support member 2, the rotating shaft 38 is connected to a motor 39 provided in the support member 2. The rotating shaft 38 is connected to the motor 39 via a reduction mechanism (not shown). With this configuration, when the motor 39 is driven, the rotation of the motor 39 is reduced in speed by the reduction mechanism and transmitted to the rotating shaft 38. Therefore, the rotating shaft 38 can be rotated by driving the motor 39.

[0032] The motor 39 that rotates the rotating shaft 38 is controlled by a control unit 40 provided in the support member 2. Power is supplied to the motor 39 and the control unit 40 from a switching power supply 41 provided in the support member 2. A power cord (not shown) is connected to the switching power supply 41. When AC power is input to the switching power supply 41 from the power cord, the switching power supply 41 converts the AC power into DC power and supplies the DC power to the motor 39 and the control unit 40.

[0033] When the rotating shaft 38 is rotated in one direction, the rotating body 34 of the tilt drum 13 rotates integrally with the winding drum 14. When the rotating body 34 rotates, one end of the clutch spring 35 presses a pressing portion (not shown) provided in the drum body 33, thereby rotating the drum body 33. When the drum body 33 rotates, the multiple shielding materials 5 supported by the ladder cord 12 simultaneously tilt from a state in which they are arranged substantially horizontally. This allows the multiple shielding materials 5 to be in an inclined state. When the rotating shaft 38 is further rotated in one direction, the multiple shielding materials 5 enter a closed state along the vertical direction, and the other end of the clutch spring 35 is pressed, so that the winding of the clutch spring 35 around the rotating body 34 is loosened. When the winding of the clutch spring 35 around the rotating body 34 is loosened, the rotating body 34 rotates relative to the clutch spring 35. As a result, the pressing portion of the drum body 33 is not pressed by one end of the clutch spring 35, so that the drum body 33 rotates relative to the rotating body 34. In other words, the tilt drum 13 stops rotating, and the take-up drum 14 and the rotating shaft 38 rotate relative to the tilt drum 13.

[0034] When the rotating shaft 38 is rotated in the other direction, the rotating body 34 of the tilt drum 13 rotates integrally with the winding drum 14. When the rotating body 34 rotates, the other end of the clutch spring 35 presses a pressing portion (not shown) provided in the drum body 33, thereby rotating the drum body 33. When the drum body 33 rotates, the multiple shielding materials 5 supported by the ladder cord 12 simultaneously tilt from a substantially horizontally arranged state to the opposite side from the previous state. This allows the multiple shielding materials 5 to be in an inclined state. When the rotating shaft 38 is further rotated in the other direction, the multiple shielding materials 5 enter a closed state along the vertical direction, and one end of the clutch spring 35 is pressed, so that the winding of the clutch spring 35 around the rotating body 34 is loosened. When the winding of the clutch spring 35 around the rotating body 34 is loosened, the rotating body 34 rotates relative to the clutch spring 35. As a result, the pressing portion of the drum body 33 is not pressed by the other end of the clutch spring 35, so that the drum body 33 rotates relative to the rotating body 34. That is, the tilt drum 13 stops rotating, and the take-up drum 14 and the rotating shaft 38 rotate relative to the tilt drum 13. By rotating the tilt drum 13 in one direction or the other in this manner, the tilt angles of the multiple shielding materials 5 can be adjusted simultaneously.

[0035] When the rotating shaft 38 is rotated, the winding drum 14, which is provided on the rotating shaft 38 so as to be rotatable together with the rotating shaft 38, rotates. When the winding drum 14 is rotated in a direction in which the lifting tape 36 is wound up, the bottom rail 37 is lifted by the lifting tape 36. When the bottom rail 37 is lifted, the shielding materials 5 are sequentially superimposed on the bottom rail 37. As a result, the multiple shielding materials 5 are lifted, and the opening and closing device 1, which is a blind, can be opened. When the opening and closing device 1 is in an open state, when the winding drum 14 is rotated in a direction in which the lifting tape 36 is unwound, the bottom rail 37 is lowered by the lifting tape 36. When the bottom rail 37 is lowered, the number of shielding materials 5 superimposed on the bottom rail 37 decreases. As a result, the multiple shielding materials 5 are lowered, and the opening and closing device 1 can be closed.

[0036] As described above, the tilt drum 13 and the winding drum 14 are provided on the support member 2 via the mounting part 3. In this case, the mounting part 3 is detachably attached to the support member 2. The mounting part 3 has a plurality of locking parts 42 that can be locked to the locked parts 10 of the support member 2. Each locking part 42 is provided with a release operation part 43 that can release the locked state in which the locking part 42 is locked to the locked part 10. In the first embodiment, at least one locking part 42 is formed on one side and the other side in the front-rear direction (short direction of the support member 2) of the mounting part 3 so as to be able to be locked to a pair of front and rear locked parts 10, 10, respectively. In the illustrated example, one locking part 42 is formed on the first wall part 16 located on the front side of the mounting part 3, and one locking part 42 is formed on the third wall part 18 located on the rear side of the mounting part 3.

[0037] The locking portion 42 provided on the first wall portion 16 of the mounting part 3 is formed in a shape in which the upper end portion of the first wall portion 16 is cut and raised in a substantially rectangular shape toward the front. The locking portion 42 of the first wall portion 16 has an inclined portion 44 that inclines upward from the base end toward the front, and an extending portion 45 that extends upward from the tip end of the inclined portion 44. With this configuration, the locking portion 42 of the first wall portion 16 can be tilted in the front-rear direction. The release operation portion 43 provided on the locking portion 42 of the first wall portion 16 is a recessed groove that opens forward. The release operation portion 43 has a groove shape that opens forward, and is formed along the up-down direction on the front surface of the extending portion 45 of the locking portion 42 of the first wall portion 16. The release operation portion 43 has a first groove portion 46 located on the upper side and a second groove portion 47 located on the lower side. The first groove portion 46 has a groove shape that opens forward and opens in the up-down direction. The second groove 47 is a groove-shaped groove that opens forward and opens in the vertical direction. The second groove 47 is continuous with the first groove 46 and communicates with the first groove 46. Since the thickness of the left and right side walls of the second groove 47 is greater than the thickness of the left and right side walls of the first groove 46, the distance between the inner surfaces of the left and right side walls of the second groove 47 is smaller than the distance between the inner surfaces of the left and right side walls of the first groove 46. In addition, the left and right side walls of the second groove 47 protrude forward more than the left and right side walls of the first groove 46. Therefore, at both left and right ends of the locking portion 42 of the first wall 16, a step portion 48 is formed with an upper surface facing in the vertical direction. Note that the locking portion 42 formed in a shape in which the upper end of the third wall 18 is cut and raised in a substantially rectangular shape toward the rear and the locking portion 42 of the first wall 16 are configured symmetrically in the front-rear direction, so a description thereof will be omitted here.

[0038] Next, the process of attaching the mounting part 3 to the support member 2 will be described with reference to Figs. 4 and 5. When attaching the mounting part 3 to the support member 2, first, the mounting part 3 is accommodated in the support member 2 so that the lower wall portion 15 of the mounting part 3 is positioned downward. After accommodating the mounting part 3 in the support member 2, one side in the front-rear direction of the mounting part 3 is pushed downward. As a result, the locking portion 42 arranged on one side in the front-rear direction of the mounting part 3 comes into contact with the locked portion 10 arranged on one side in the front-rear direction of the support member 2 and is pushed backward, and then the contact with the locked portion 10 is released and the original position is restored. In this way, the locking portion 42 arranged on one side in the front-rear direction of the mounting part 3 climbs over the locked portion 10 arranged on one side in the front-rear direction of the support member 2. After the locking portion 42 climbs over the locked portion 10, the locked portion 10 arranged on one side in the front-rear direction of the support member 2 abuts on the upper surface of the step portion 48 of the locking portion 42 arranged on one side in the front-rear direction of the mounting part 3. Thereafter, the other side of the mounting part 3 in the front-rear direction is pushed downward. As a result, the locking part 42 arranged on the other side of the mounting part 3 in the front-rear direction comes into contact with the locked part 10 arranged on the other side of the support member 2 in the front-rear direction and is pushed forward, and then the contact with the locked part 10 is released and the original position is restored. In this way, the locking part 42 arranged on the other side of the mounting part 3 in the front-rear direction climbs over the locked part 10 arranged on the other side of the support member 2 in the front-rear direction. After the locking part 42 climbs over the locked part 10, the locked part 10 arranged on the other side of the support member 2 in the front-rear direction abuts against the upper surface of the step part 48 of the locking part 42 arranged on the other side of the mounting part 3 in the front-rear direction.

[0039] As described above, the locking portion 42 is in a locked state in which it is locked to the locked portion 10 on one side of the support member 2 in the front-rear direction by abutting the locking portion 42 on one side of the mounting part 3 in the front-rear direction, and the locking portion 10 on the other side of the support member 2 in the front-rear direction by abutting the locking portion 42 on the other side of the mounting part 3 in the front-rear direction. When the locking portion 42 is in a locked state in which it is locked to the locked portion 10, the mounting part 3 is attached to the support member 2. As described above, the locking portion 42 has the first groove portion 46, the second groove portion 47, and the step portion 48. Therefore, the release operation portion 43, which is a recessed groove, can form a gap in a part between the locked portion 10 and the locking portion 42 in the locked state. That is, in the locked state, the release operation portion 43 penetrates in the up-down direction. When the mounting part 3 is attached to the support member 2, the engaged portion 10 is located above the step portion 48 of the engaging portion 42 of the mounting part 3, so that the mounting part 3 is restricted from moving upward relative to the support member 2.

[0040] As described above, when the mounting part 3 is attached to the support member 2, the multiple protrusions 22 of the mounting part 3 are inserted into the multiple through holes 9 provided in the bottom wall part 6 of the support member 2. As shown in FIG. 4, when one side of the mounting part 3 in the front-rear direction is pushed downward, the outer surface of the introduction part 24 located on the other side of the protrusions 22 in the front-rear direction comes into contact with the edge of the through hole 9. When the other side of the mounting part 3 in the front-rear direction is then pushed downward, the protrusions 22 are pushed downward while the outer surface of the introduction part 24 located on the other side in the front-rear direction comes into contact with the edge of the through hole 9. As a result, the protrusions 22 are inserted into the through hole 9, and the fitting part 23 fits into the edge of the through hole 9, thereby restricting the movement of the protrusions 22 in the front-rear and left-right directions (see FIG. 4(c)). In the first embodiment, the outer peripheral surface of the introduction portion 24 of the protrusion 22 is formed in a tapered shape, so that when the mounting part 3 is attached to the support member 2, the protrusion 22 of the mounting part 3 can be smoothly inserted into the through hole 9 of the support member 2.

[0041] When the protrusion 22 is inserted into the through hole 9, a ladder cord 12 is passed through one of the three insertion holes 21 spaced apart in the front-to-back direction and one of the three through holes 9 spaced apart in the front-to-back direction, and a lifting tape 36 is passed through the remaining insertion hole 21 and the remaining through hole 9.

[0042] Next, the process of removing the attachment part 3 from the support member 2 will be described with reference to Figs. 6 to 8. To remove the attachment part 3 from the support member 2, a dedicated release tool 4 shown in Fig. 6 is used. The release tool 4 can simultaneously release the release operation parts 43 of the multiple locking parts 42. For this reason, the release tool 4 has an operation part 49 that can be operated by an operator, and multiple legs 50 provided on the operation part 49. In the illustrated example, the release tool 4 has a substantially gate-shaped plate-shaped operation part 49 and a pair of legs 50, 50 provided on both ends of the operation part 49. The operation part 49 is a substantially rectangular plate-shaped in side view with the plate surface facing left and right. The operation part 49 has a cutout part 51 cut out upward. The pair of legs 50, 50 are substantially rod-shaped and protrude in one direction from both ends of the operation part 49. The number of legs 50 may be at least equal to or greater than the number of locking parts 42 provided on the attachment part 3. In the first embodiment, two locking portions 42 are provided on the mounting part 3, and the release tool 4 has two legs 50,50.

[0043] The leg 50 of the release tool 4 has a wide portion 52 provided on the base end side, an inclined portion 53 formed in a tapered shape from the tip of the wide portion 52, and a narrow portion 54 extending from the tip of the inclined portion 53. The wide portion 52 is rod-shaped with a substantially rectangular cross section and protrudes in one direction from the operating part 49. The inclined portion 53 is rod-shaped with a substantially rectangular cross section and protrudes from the tip of the wide portion 52. Of the outer surfaces of the inclined portion 53, the outer surface located inside the release tool 4 is an inclined surface that inclines outward toward the tip. As a result, the inclined portion 53 is formed in a tapered shape. The narrow portion 54 is rod-shaped with a substantially rectangular cross section and protrudes from the tip of the inclined portion 53. The width of the narrow portion 54 (the length in the direction perpendicular to the plate thickness direction) is smaller than the width of the wide portion 52.

[0044] The release tool 4 having such a configuration is used as follows. As shown in FIG. 7, the operator moves the release tool 4 downward while holding the operation part 49 of the release tool 4, and inserts the leg part 50 of the release tool 4 into the gap between the locking part 42 and the locked part 10. Since the release tool 4 has two legs 50, 50, the leg part 50 can be inserted into the gap between the front locking part 42 and the front locked part 10 and the gap between the rear locking part 42 and the rear locked part 10 at the same time. When the leg part 50 is inserted into the gap between the locking part 42 and the locked part 10, the leg part 50 moves downward with the locking part 42 coming into contact with the inclined surface of the inclined part 53. As a result, the release operation part 43 is pressed by the leg part 50, and the locking part 42 is tilted inward. That is, the front locking part 42 tilts backward, and the rear locking part 42 tilts forward. When the locking portion 42 tilts inward, the step portion 48 moves from a state in which it is located below the locked portion 10, and is positioned at a position disengaged from the locked portion 10. When the step portion 48 is positioned at a position disengaged from the locked portion 10, the locked state between the locking portion 42 and the locked portion 10 is released. By releasing the locked state between the locking portion 42 and the locked portion 10, the attachment part 3 can be moved upward with respect to the support member 2, and therefore can be removed from the support member 2.

[0045] In this way, the locking portion 42 can be tilted in a direction to release the locking state between the locking portion 42 and the locked portion 10 by pressing the release operation portion 43. The release tool 4 can simultaneously press the release operation portions 43 of the locking portions 42 with the multiple legs 50 by operating the operation portion 49. The release operation portion 43 can be pressed by the legs 50 so that the locking portion 42 tilts in a direction to release the locking state by inserting a part of the leg 50 into the recessed groove. Therefore, the release tool 4 can simultaneously release the locking state of the multiple locking portions 42, thereby making the mounting part 3 removable from the support member 2. In the first embodiment, the cutout portion 51 is formed in the operation portion 49, so that the operation portion 49 can be prevented from coming into contact with the mounting part 3, the drums 13, 14, etc. when the release tool 4 is operated.

[0046] In the first embodiment, as shown in FIG. 2, an obstacle detection mechanism (not shown) and an electronic component 55 for stopping the rotation of the motor 39 are provided on the mounting part 3. The obstacle detection mechanism can detect contact between an obstacle and the bottom rail 37 based on the slack of the lifting tape 36 during the downward movement of the shielding material 5. The electronic component 55 is a switch that stops the rotation of the motor 39 that rotates the winding drum 14 when the obstacle comes into contact with the bottom rail 37 and the obstacle detection mechanism is activated. Typically, the electronic component 55 is a microswitch. As shown in FIG. 2, the electronic component 55 is placed on the lower wall 15 between the fourth wall 19 and the fifth wall 20. The upper part of the electronic component 55 placed on the mounting part 3 is covered by a cover 56 provided on the mounting part 3.

[0047] One or more wirings 57 are pulled out from the electronic component 55 placed on the mounting part 3. The mounting part 3 has a wiring holding part 58 that holds the wiring 57 pulled out from the electronic component 55. In the illustrated example, the wiring holding part 58 is provided on the first wall part 16, the second wall part 17, and the third wall part 18. By holding the wiring 57 pulled out from the electronic component 55 by the wiring holding part 58, the wiring 57 can be routed outside the mounting part 3. Note that, in the illustrated example, three mounting parts 3, each provided with drums 13, 14, are attached inside the support member 2, and the mounting part 3 located in the center of the three mounting parts 3 is not provided with a fault detection mechanism and an electronic component 55.

[0048] Next, a second embodiment of the present invention will be described with reference to Figures 9 and 10. Note that components having the same reference numerals as those in the above embodiment have the same functions, and therefore, the description thereof will be omitted below.

[0049] In the first embodiment, one locking portion 42 is provided on the front side of the mounting part 3 and one on the rear side of the mounting part 3, but in the second embodiment, two locking portions 42 are provided on the front side of the mounting part 3 and two on the rear side of the mounting part 3. That is, in the second embodiment, the mounting part 3 has four locking portions 42. In the first embodiment, the first wall portion 16 is located on the left side of the lower wall portion 15 and is not disposed on the right side of the lower wall portion 15. Specifically, the first wall portion 16 is not provided at the front end portion of the lower wall portion 15 between the fourth wall portion 19 and the fifth wall portion 20. In the second embodiment, the first wall portion 16 is also disposed at the front end portion of the lower wall portion 15 between the fourth wall portion 19 and the fifth wall portion 20, unlike the first embodiment. In the first embodiment, the third wall portion 18 is located on the left side of the lower wall portion 15 and is not disposed on the right side of the lower wall portion 15. Specifically, the third wall portion 18 is not provided at the rear end portion of the lower wall portion 15 between the fourth wall portion 19 and the fifth wall portion 20. In the second embodiment, the third wall portion 18 is also provided at the rear end portion of the lower wall portion 15 between the fourth wall portion 19 and the fifth wall portion 20, unlike the first embodiment.

[0050] As shown in Fig. 9, the locking portions 42 are provided on the first wall portion 16 at a distance from each other on the left and right, and are also provided on the third wall portion 18 at a distance from each other on the left and right. The two locking portions 42 provided on the first wall portion 16 are formed in a shape in which the upper end portion of the first wall portion 16 is cut and raised in a generally rectangular shape toward the front, and have the same configuration as the locking portion 42 provided on the front side of the mounting part 3 in the first embodiment. The two locking portions 42, 42 provided on the third wall portion 18 are formed in a shape in which the upper end portion of the third wall portion 18 is cut and raised in a generally rectangular shape toward the rear, and have the same configuration as the locking portion 42 provided on the rear side of the mounting part 3 in the first embodiment.

[0051] In the second embodiment, the attachment part 3 has four locking portions 42. Therefore, in the second embodiment, the release tool 4 has four legs 50. Typically, the release tool 4 has a substantially rectangular box-shaped operating part 49 that opens downward, and legs 50 provided at the four corners of the operating part 49. Of the four side walls of the operating part 49, a pair of opposing side walls have notches 51 cut out upward. The four legs 50 are substantially rod-shaped and protrude downward from the four corners of the lower end of the operating part 49. Each leg 50 has a wide portion 52, an inclined portion 53, and a narrow portion 54, as in the first embodiment. Of the four legs 50, a pair of legs 50, 50 that face each other in the plate surface direction of the side wall in which the notches 51 are formed have the same configuration as the pair of front and rear legs 50, 50 of the first embodiment. That is, the inclined surfaces of the pair of legs 50, 50 facing each other in the plate surface direction of the side wall in which the cutout portion 51 is formed are inclined in directions that move away from each other downward.

[0052] With this configuration, by moving the releasing tool 4 downward in the same manner as in the first embodiment, the four legs 50 of the releasing tool 4 can simultaneously release the locked state of the four locking parts 42 of the mounting part 3. Specifically, the releasing tool 4 can simultaneously tilt the four locking parts 42 in a direction to release the locked state.

[0053] Next, a third embodiment of the present invention will be described with reference to Fig. 11. Note that components having the same reference numerals as those in the above embodiment have the same functions, and therefore, the description thereof will be omitted below.

[0054] The release tool 4 is detachably provided on the mounting part 3, which is a drum receiver, as a drum cover that covers the drums 13 and 14. Therefore, the release tool 4 has an operation part 49 that can cover the drums 13 and 14 provided on the mounting part 3, and a pair of legs 50, 50 provided on the operation part 49. The operation part 49 is a substantially rectangular box shape that opens downward. A pair of side walls of the operation part 49 that face each other in the left-right direction have notches 51 cut upward. The pair of legs 50, 50 are provided at the corners located at the front and rear of the four corners of the operation part 49. The pair of legs 50, 50 protrude downward from the corners of the lower end of the operation part 49. Each leg 50 has a wide part 52, an inclined part 53, and a narrow part 54, as in the first embodiment. The pair of legs 50, 50 has the same configuration as the pair of front and rear legs 50, 50 of the first embodiment. That is, the inclined surfaces of the pair of legs 50, 50 are inclined in directions that move away from each other as they extend downward.

[0055] With this configuration, by moving the release tool 4 downward in the same manner as in the first embodiment, the two legs 50, 50 of the release tool 4 can simultaneously release the locked state of the two locking parts 42, 42 of the mounting part 3. In the third embodiment, the release tool 4 is attached to the mounting part 3 when not in use. The release tool 4 is attached to the mounting part 3 by sandwiching the mounting part 3 between the pair of legs 50, 50. When the release tool 4 is attached to the mounting part 3, the operating part 49 covers the upper parts of the drums 13, 14. When the release tool 4 is to be removed from the mounting part 3 and used, the release tool 4 is moved upward and then rotated about an axis along the vertical direction, and moved downward so that the legs 50 are inserted between the locking part 42 and the locked part 10.

[0056] In the case of the part mounting / detaching structure for a switching device of the above embodiment, the locked state of the multiple locking portions 42 of the mounting part 3 can be released simultaneously by the release tool 4, so that it is possible to prevent the locked portions 42 from being locked again during work, which has been released as in the conventional case. Therefore, the part mounting / detaching structure for a switching device of the above embodiment can improve the workability when removing the mounting part 3 from the support member 2.

[0057] In the case of the part attachment / detachment structure of the opening / closing device of the above embodiment, the locking parts 42 are tiltable, the release tool 4 has an operation part 49 and legs 50, and the release operation part 43 can be pressed with the legs 50. Therefore, according to the part attachment / detachment structure of the opening / closing device of the above embodiment, all of the locking parts 42 can be tilted simultaneously by a simple operation of simply pressing the release tool 4, making it possible to remove the mounting part 3 from the support member 2.

[0058] In the case of the part attachment / detachment structure for an opening and closing device of the above embodiment, it is possible to easily perform the operation of engaging the support member 2, which is the head box, with the mounting part 3, which is the drum receiver, and the operation of releasing the engaged state between the support member 2, which is the head box, and the mounting part 3, which is the drum receiver. Therefore, the part attachment / detachment structure for an opening and closing device of the above embodiment makes it possible to easily attach and detach parts to and from the head box of a blind, which was previously difficult to do.

[0059] In the case of the part attachment / detachment structure of the opening / closing device of the above embodiment, the release tool 4 can be attached to the drum receiver as a drum cover when not in use. Therefore, according to the part attachment / detachment structure of the opening / closing device of the above embodiment, it is not necessary to carry the release tool 4 every time a part is removed from the head box.

[0060] The present invention is not limited to the above-described embodiments, and modifications and improvements within the scope of the present invention that can achieve the object of the present invention are included in the present invention.

[0061] For example, in the above embodiment, one locking portion 42 is operated by one leg portion 50, but one locking portion 42 may be operated by a plurality of legs 50. In this case, the locking portion 42 has a shape elongated in the left-right direction.

[0062] In the above embodiment, the number of locking portions 42 provided on the attachment part 3 is two or four, but is not limited thereto and may be any number as long as it is plural. In the above embodiment, the number of locking portions 42 provided on the front side of the attachment part 3 and the number of locking portions 42 provided on the rear side of the attachment part 3 are the same, but they may be different.

[0063] In the above embodiment, the opening and closing device 1 is a blind, but is not limited to this and may be, for example, a projection screen device or a shutter. [Explanation of symbols]

[0064] 1 Switchgear 2 Supporting member 3 Installation parts 4 Release tool 5 Shielding material 10 Locked part 13 Tilt Drum 14 Winding drum 42 Locking part 43 Release operation section 49 Operation section 50 Legs 52 Wide section 53 Slope 54 Narrow part

Claims

1. A component attachment / detachment structure for a switching device including a shielding material and a support member that suspends and supports the shielding material, The support member has a locked portion; an attachment part having a plurality of engagement parts that can be engaged with the engagement parts and that are provided with release operation parts that can release an engagement state in which the attachment part is engaged with the engagement parts, the attachment part being attached to the support member when in the engagement state and being detachable from the support member when the engagement state is released; a release device that can simultaneously release the release operation portions of the multiple locking portions and simultaneously release the locked state of the multiple locking portions, thereby enabling the mounting parts to be removed from the support member.

2. the locking portion is tiltable in a direction to release the locked state by pressing the release operation portion, 2. The component attachment / detachment structure for an opening / closing device as described in claim 1, wherein the release tool has an operable operating portion and a plurality of legs protruding from the operating portion, the number of which is at least equal to the number of the locking portions, and the plurality of legs are capable of simultaneously pressing the release operating portions of the plurality of locking portions by operating the operating portion.

3. 3. The component attachment / detachment structure of an opening / closing device as described in claim 2, wherein the release operation portion is a groove that forms a gap between the locked portion and the locking portion in the locked state, and a portion of the leg can be inserted into the groove to press the leg so that the locking portion tilts in a direction to release the locked state.

4. 4. The component attachment / detachment structure of an opening / closing device as described in claim 3, wherein the leg portion has a wide portion provided on the base end side, a tapered inclined portion formed from the tip of the wide portion, and a narrow portion extending from the tip of the inclined portion.

5. The opening and closing device is a blind, The part attachment / detachment structure for an opening / closing device according to claim 1 , wherein the support member is a head box that suspends and supports the shielding material of the blind.

6. the engaged portion is a pair of ribs protruding from one wall surface and the other wall surface of the support member in a lateral direction toward an inside of the support member, The component mounting and dismounting structure for an opening and closing device according to claim 5 , wherein at least one of the locking portions is formed on each of one side and the other side in the short side direction of the mounting component so as to be lockable with each of the pair of ribs.

7. The mounting part is a drum receiver that rotatably supports a drum for opening and closing the shielding material, 7. The component mounting and dismounting structure for an opening and closing device according to claim 5, wherein the release tool is detachably provided on the drum receiver as a drum cover that covers the drum.

Images