JP5215889B2 - Duct plugs and spotlights - Google Patents

Description

  The present invention relates to a duct plug and a spotlight that are detachably attached to a wiring duct.

  2. Description of the Related Art Conventionally, a duct plug that is detachably attached to a wiring duct installed on a ceiling or a wall has been provided (see, for example, Patent Document 1). A wiring duct (power supply rail) 40 to which the duct plug (power supply rail plug) 30 described in Patent Document 1 is attached is formed in a rectangular tube shape and disposed on the ceiling as shown in FIG. Yes. A rail hole (downward opening) 41 is provided in the lower wall of the wiring duct 40 along the length direction. The rail hole 41 is formed at the center in the width direction. A power supply line 42 is disposed in the wiring duct 40.

  As shown in FIG. 10, the duct plug 30 includes a plug body 31 having upper and lower surfaces parallel to each other and a circumferential surface intersecting the upper and lower surfaces, a mounting plate 32 inserted into the wiring duct 40 from the rail holes 41, and A power supply 37 is provided. The mounting plate 32 is disposed away from the plug body 31 so as to be along the upper surface of the plug body 31. The distance between the lower surface of the mounting plate 32 and the upper surface of the plug body 31 is set to be approximately the same as the thickness of the lower wall of the wiring duct 40.

  The mounting plate 32 is formed such that the length dimension in one direction is equal to or less than the width dimension of the rail hole 41, and the length dimension in the other direction is larger than the width dimension of the rail hole 41. Have After the mounting plate 32 is inserted into the wiring duct 40 from the rail hole 41, the mounting plate 32 is rotated so that the longitudinal direction thereof coincides with the width direction of the wiring duct 40, and wiring is performed between the lower surface of the mounting plate 32 and the upper surface of the plug body 31. The lower wall of the duct 40 is sandwiched, and the duct plug 30 is supported by the lower wall of the wiring duct 40.

  A device such as a spotlight is attached to the lower surface side of the plug body 31. That is, the upper surface of the plug body 31 is a duct side surface, and the lower surface is a device side surface. Further, the power supply 33 contacts the power supply line 42, and power is supplied to the device through the duct plug 30.

  Incidentally, in the duct plug 30 described in Patent Document 1, the rotation of the duct plug 30 is prohibited by the rotation stop member (removal operation member) 50 ′ so that the duct plug 30 does not fall off the wiring duct 40. ing.

  The anti-rotation member 50 ′ is formed so that the cross section along the thickness direction and the short direction of the mounting plate 32 is substantially square, and is arranged so that one wall surface is parallel to the peripheral surface of the plug body 31. Yes. An upper end lock portion 59 formed with a width dimension equal to or smaller than the width dimension of the rail hole 41 protrudes from the upper end of the rotation stop member 50 ′, and the wall surface parallel to the peripheral surface of the plug body 31 is a curved surface. An operation surface 53a is formed.

  The anti-rotation member 50 is pivotally supported by the plug main body 31 so that the corner on the side far from the operation surface 53a at the upper end of the anti-rotation member 50 in the cross section becomes the rotation shaft 39, and the operation surface 53a is formed. It is urged by the elastic member 37 that contacts the lower end portion of the wall surface on the opposite side of the wall surface, and the upper end lock portion 59 protrudes from the upper surface of the plug body 31 and can be fitted into the rail hole 41 of the wiring duct 40. Yes. When the upper end lock part 59 is fitted in the rail hole 41, the rotation of the duct plug 30 is prohibited.

  By placing the finger on the operation surface 53a and rotating the anti-rotation member 50 ′ downward to reduce the projecting dimension of the upper end lock part 59 from the plug body 31 so that it cannot be fitted into the rail hole 41, The rotation of the duct plug 30 is permitted.

Japanese Utility Model Publication No. 6-21188

  In the duct plug 30 described in Patent Document 1, in order to rotate the rotation preventing member 50 ′ downward, a downward force must be applied to the operation surface 53a when the operation surface 53a is pushed. Therefore, the operation surface 53a is required to have a height dimension sufficient to prevent the finger from slipping. Further, if the distance between the operation surface 53a and the rotary shaft 39 in the vertical direction is short, a larger downward force must be applied to the operation surface 53a, making it difficult to push the operation surface 52a.

  Therefore, in the duct plug 30 described in Patent Document 1, the operation surface 53a needs to be separated from the rotation shaft 39 in the vertical direction, and has a height dimension that prevents a finger from slipping. There is a problem in that the height dimension of the member 50 ′ increases and the overall height of the plug body 31 increases. When the overall height of the plug body 31 is large, the duct plug 30 is conspicuous when used for a spotlight or the like, and the design is impaired, and the overall height of the spotlight is increased.

  Further, since the rotation preventing member 50 ′ is rotated downward, it is difficult to apply a finger to the operation surface 53a ′ and the wall surface of the plug main body 31, grasp the duct plug 30, and rotate the rotation stopping member 50 ′. . Therefore, it is necessary to separately perform the operation of rotating the rotation stop member 50 ′ downward and the operation of gripping the duct plug 30 to rotate the duct plug 30, and the duct plug 30 is removed from the wiring duct 40. There is a problem that it is difficult to work.

  The present invention has been made in view of the above reasons, and an object of the present invention is to provide a duct plug and a spotlight that can reduce the overall height of the plug body and can be easily removed from the wiring duct.

  The invention according to claim 1 is a duct plug that is attached to a wiring duct that is formed in a rectangular tube shape, has a rail hole penetrating through one wall surface, and is provided with a power feed line therein. A mounting plate to be inserted into the wiring duct from the rail hole and a power supply that contacts the power supply line are arranged, and the wall of the wiring duct is sandwiched between the side surface of the duct and the mounting body so that the wiring duct is supported. The plug body, sandwiched between the plug body and the rotation stop member, which is disposed in a notch groove formed at the end of the plug body and is pushed by the one surface intersecting the duct side as an operation surface. As a result, the anti-rotation member is urged in the opposite direction to the direction in which the operation surface is pushed, and the anti-rotation member is held in a locked position where a part of the anti-rotation member protrudes from the duct surface and fits into the rail hole. And a notch groove A pair of cutout walls that overlap with the rotation stop member in the width direction along the side surface, and a back wall that intersects the cutout wall and that is in sliding contact with the rotation stop member on the surface opposite to the operation surface of the rotation stop member. At least one of the opposite surface of the operation surface and the back wall of the notch groove in the state where the rotation stop member is in the locked position is inclined so that the operation surface is pushed away from the operation surface as the distance from the duct side surface increases. In this case, an unlocking slide surface is formed for moving the rotation stop member located at the lock position to the lock release position removed from the rail hole.

  According to a second aspect of the present invention, in the first aspect of the invention, in the state where the rotation stop member is at the lock position on at least one of the side surface in the width direction of the rotation stop member and the notch wall of the notch groove. A locking slide surface is formed that inclines away from the operation surface as it moves away from the duct side surface and biases the anti-rotation member toward the lock position by the biasing force of the elastic member, and a side surface in the width direction of the anti-rotation member; On one side of the notch groove and the notch wall, a lock-side restricting projection protrudes, and on the other side, the rotation-stopping member moves from the unlock position to the lock position and reaches the lock position. The lock-side stop surface that comes into contact with the limiting projection is formed as a step surface.

  According to a third aspect of the present invention, in the first aspect of the present invention, the elastic member is bent so that both ends approach each other in a direction in which the operation surface is pushed, and the elastic member is interposed between the rotation stop member and the plug body. One of the provided leaf spring and wire spring is used.

  According to a fourth aspect of the present invention, in the first aspect of the invention, a direction in which the operation surface is pushed to one of the surface opposite to the operation surface of the rotation stop member and the back wall of the notch groove. The unlocking side restricting projection is formed on the other side, and on the other side, when the rotation stop member moves from the locked position side to the unlocked position side and reaches the unlocked position, the unlocking side restricting projection is formed. A lock release side stop surface with which the tip abuts is formed.

  According to a fifth aspect of the present invention, in the first aspect of the invention, the plug main body is formed of an elastic material, and the anti-rotation member is formed of an elastic material and at least one surface along the width direction. Is opened.

  The invention according to claim 6 is the invention according to any one of claims 1 to 5, wherein the surface of the plug body opposite to the side surface of the duct and one surface of the anti-rotation member are the anti-rotation member. Is flush when in the locked position.

  The invention of claim 7 is the invention according to any one of claims 4 to 6, wherein the lock release side restricting protrusion is located at a position where the rotation stop member does not protrude from the duct side surface of the plug body. It abuts on the lock release side stop surface.

  According to an eighth aspect of the present invention, in the invention according to the third aspect, the rotation stop member that sandwiches the elastic member and the plug body have a positioning portion that contacts the elastic member in the width direction of the rotation stop member. It is formed.

  A duct plug according to any one of claims 1 to 8, and a lamp attached to the duct plug.

  According to the configuration of the first aspect of the present invention, at least one of the surface opposite to the operation surface of the rotation stop member and the back wall of the notch groove is inclined so as to move away from the operation surface as the distance from the duct side surface increases. In order to bring the plug body into a state where rotation is permitted, a lock release slide surface is formed that moves the rotation stop member that was in the lock position to the lock release position removed from the rail hole. Requires only a force in the direction perpendicular to the operation surface (force in the direction of pushing), and the height of the anti-rotation member can be made smaller than the conventional configuration for rotating the anti-rotation member. There is an advantage that the height of the plug body can be reduced to make the duct plug inconspicuous. In addition, the operation surface can be pushed by placing the finger on the operation surface and the peripheral surface of the plug body, and the operation surface can be pushed, rotating the duct plug to rotate, The operation of operating the stop member can be performed integrally, and there is an advantage that the work of removing the duct plug from the wiring duct is facilitated. Further, since the elastic member is sandwiched between the rotation stop member and the plug body, a member for holding the elastic member is unnecessary, and since the rotation stop member is not rotated, a member for rotating the rotation stop member is unnecessary. There is an advantage that the rotation of the duct plug can be prohibited with a simple configuration.

  According to the configuration of the second aspect of the present invention, the lock-side stop surface that comes into contact with the lock-side limiting protrusion when the rotation-stopping member reaches the lock position is formed as a step surface. There is an advantage that the rotation stop member can be prevented from falling off the notch groove.

  According to the configuration of the invention of claim 3, the leaf spring or the wire spring is bent and disposed so that both ends approach in the direction in which the operation surface is pushed, and the leaf spring or the wire spring is used as an elastic member. There is an advantage that it can be used.

  According to the configuration of the invention of claim 4, when the rotation preventing member moves from the lock position side to the lock release position side and reaches the lock release position, the lock release side on which the tip of the lock release side restricting protrusion comes into contact. Since the stop surface is formed, there is an advantage that the rotation stop member can be prevented from dropping out of the notch groove due to the force by which the operation surface is pushed.

  According to the configuration of the invention of claim 5, since the plug body is formed of an elastic material, the plug body can be deformed so that the notch groove extends in the width direction, and the rotation stop The member is made of a material having elasticity, and at least one of the surfaces along the width direction is opened. Therefore, the member can be deformed so that the width dimension becomes small. There is an advantage that it can be press-fitted into the notch groove from the front side.

  According to the configuration of the invention of claim 6, the surface of the plug body opposite to the duct side surface and one surface of the rotation stop member are flush with each other when the rotation stop member is in the locked position. There is an advantage that the rotation stop member becomes inconspicuous and the design can be improved.

  According to the configuration of the invention of claim 7, the lock release side restricting projection comes into contact with the lock release side stop surface at a position where the rotation preventing member does not protrude from the duct side surface of the plug body. There is an advantage that the rotation stop member can be prevented from being caught by the wiring duct when rotating.

  According to the configuration of the eighth aspect of the invention, the rotation stop member and the plug main body that sandwich the elastic member are formed with positioning portions that contact the elastic member in the width direction of the rotation stop member. There is an advantage that the displacement of the elastic member in the width direction can be prevented.

  According to the configuration of the invention of claim 9, by using a duct plug provided with a plug body having a reduced overall height, a spotlight having a small overall height and having a well-designed spotlight that does not stand out from the duct plug is realized. There is an advantage that can be.

The plug for ducts of this embodiment is shown, (a) is a sectional view in a state where a rotation stop member is in a lock position, and (b) is a sectional view in a state where a rotation stop member is in a lock release position. It is a perspective view of the state which attached the lamp in the same as the above. It is the perspective view which fractured | ruptured partially in the state which attached the lamp in the same as the above. It is a perspective view of the plug for ducts same as the above. The duct plug same as the above is shown, (a) is a plan view, (b) is a front view, and (c) is a side view. It is a perspective view which shows a plug main body same as the above. The rotation stop member same as the above is shown, (a) is a perspective view seen from the outside, (b) is a perspective view seen from the inside. It is operation | movement explanatory drawing same as the above. It is a perspective view which shows a wiring duct. It is sectional drawing which shows a prior art example.

  As shown in FIG. 3, the lamp 10 is attached to the duct plug 30 exemplified in the present embodiment by the arm 20 to form a spotlight. That is, in this embodiment, the duct plug 30 used for a spotlight is illustrated. However, the use of the duct plug 30 is not limited to a spotlight.

  As shown in FIG. 4, the lamp 10 includes a shade 13 having a cylindrical front frame 12 disposed at one end thereof, and a case 14 disposed on the opposite side of the front frame 12 across the shade 13. The light source 11 is accommodated in the lamp 10. The front frame 12 is mounted on the shade 13 by a fitting rotation type like a bayonet structure. In the case 14, a socket 16 that is a so-called screw base (E type) and a lighting device (not shown) are accommodated.

  The light source 11 is formed in a straight tube with a single cap. In the present embodiment, the light source 11 uses a ceramic metal halide lamp whose arc tube is ceramic. This light source 11 is a short arc type that can be regarded as a point light source, and is disposed in a shape penetrating the shade 13 so that the light emitting portion is in the front frame 12, and is attached to the socket 16 at the end.

  In the front frame 12, a reflecting mirror 15 having a parabolic reflecting surface surrounding the light emitting portion of the light source 11 is accommodated with the opening side facing the front surface of the front frame 12. The reflecting mirror 15 is fixed to the front frame 12 using a fixing spring (not shown) in a form in which the focal position is matched with the light emitting part of the light source 11.

  As shown in FIG. 3, the arm 20 includes a pair of holding pieces 21 that sandwich the lamp 10 and an arm rotation shaft 22 that couples the pair of holding pieces 21 together. The lamp 10 is rotatably supported on the arm 20 by, for example, shaft screws attached to the pair of holding pieces 21.

  As shown in FIGS. 4 and 5A to 5C, the duct plug 30 includes a plug body 31 made of a synthetic resin material having elasticity. In the present embodiment, the wiring duct 40 to which the duct plug 30 is attached is described as being attached to the ceiling. However, even if the wiring duct 40 is attached to a wall or the like, the duct plug 30 of this embodiment can be used.

  The plug body 31 is formed in a flat shape having an upper surface and a lower surface formed in a substantially square shape and a peripheral surface intersecting the upper surface and the lower surface. A bearing 35 that pivotally supports the arm rotation shaft 22 of the arm 20 is disposed on the lower surface of the plug body 31.

  An attachment plate 32 for attaching the duct plug 30 to the wiring duct 40 is disposed on the upper surface of the plug body 31. The mounting plate 32 is disposed away from the plug body 31 so that the thickness direction thereof matches the thickness direction of the plug body 31, and is coupled to the plug body 31 by the coupling member 34.

  The length of the mounting plate 32 in the direction along one side of the square of the plug body 31 is less than the width of the rail hole 41 of the wiring duct 40, and the length in the direction along the other side of the square of the plug body 31. A dimension is formed longer than the length dimension of the rail hole 41, and has a transversal direction and a longitudinal direction. The distance between the mounting plate 32 and the plug body 31 is set to be approximately the same as the thickness of the lower wall of the wiring duct 40.

  The mounting plate 32 is inserted from the rail hole 41 into the wiring duct 40 (see FIG. 3). After the mounting plate 32 is inserted into the wiring duct 40, the plug body 31 is rotated 90 degrees around the rotation axis orthogonal to the upper surface so that the longitudinal direction of the mounting plate 32 matches the width direction of the wiring duct 40. Then, both ends in the longitudinal direction of the mounting plate 32 and the upper surface of the plug body 31 sandwich the lower wall of the wiring duct 40, and the duct plug 30 is supported by the wiring duct 40. That is, the upper surface of the plug body 31 is a duct side surface that is the wiring duct 40 side.

  The coupling member 34 is formed in a cylindrical shape whose diameter is substantially the same as the width of the rail hole 41, and is formed so as to be inside the rail hole 41 when the mounting plate 32 is in the wiring duct 40.

  When the mounting plate 32 is in sliding contact with the lower wall of the wiring duct 40, the duct plug 30 is supported by the wiring duct 40 so as to be movable in the length direction. A duct shaft 36 that is inserted into the wiring duct 40 from the rail hole 41 together with the mounting plate 32 is disposed on the opposite side of the coupling member 34 across the mounting plate 32. The mounting plate 32 or the duct shaft 36 is formed with a power supply (not shown) that contacts a power supply line 42 (see FIG. 9) provided in the wiring duct 40.

  As shown in FIG. 2, duct side protrusions 43 project along the longitudinal direction at both ends in the width direction of the lower wall of the wiring duct 40, and the plug body 31 has a width dimension of the duct side protrusions 43. The upper end portion of the wiring duct 40 is supported by the wiring duct 40 so as to be sandwiched between the duct-side protrusions 43. As shown in FIG. 4, a plug-side protrusion 38 whose upper surface is in contact with the lower end of the duct-side protrusion 43 protrudes from one lower end portion of the pair of peripheral surfaces facing each other in the longitudinal direction of the mounting plate 32 in the plug body 31. Established.

  By the way, the plug body 31 is provided with a rotation stop member 50 for prohibiting the rotation of the duct plug 30. The rotation preventing member 50 is made of a synthetic resin material having elasticity.

  Below, the plug main body 31 and the rotation stop member 50 are demonstrated with reference to FIG. 6, FIG. 7 (a), (b). The duct plug 30 will be described as being supported by the wiring duct 40 (a state in which the short direction of the mounting plate 32 and the length direction of the wiring duct 40 match).

  A notch groove 60 in which the rotation stop member 50 is disposed is formed at the end of the plug body 31. The notch groove 60 is formed at the end of the mounting plate 32 in the short direction. That is, in the state where the duct plug 30 is supported by the wiring duct 40, the rotation stop member 50 is below the rail hole 41.

  The rotation stop member 50 includes a pair of side walls 51. The side wall 51 is formed in a substantially trapezoidal shape having an upper side and a lower side parallel to each other in the vertical direction, one side perpendicular to the upper and lower sides, and one side intersecting the upper and lower sides in a side view. A bottom wall 52 is disposed between the lower end portions of the pair of side walls 51, and an operation wall 53 is disposed between front end portions (end portions on one side orthogonal to both the upper and lower sides) of the pair of side walls 51, The pair of side walls 51 are coupled by a bottom wall 52 and an operation wall 53. That is, the rotation preventing member 50 is formed in a shape in which an upper surface and a rear surface along the width direction (the separation direction of the pair of side walls 51) are opened.

  The width dimension of the rotation stop member 50 (the length dimension in the separating direction of the pair of side walls 51) is formed to be equal to or smaller than the width dimension of the rail hole 41. The anti-rotation member 50 is disposed in the cutout groove 60 in such a manner that the upper end portion protrudes from the upper surface (duct side surface) of the plug body 31 with a protruding dimension that can be fitted into the rail hole 41. That is, in a state where the duct plug 30 is supported by the wiring duct 40, the upper end portion of the rotation preventing member 50 is fitted in the rail hole 41, and the rotation of the duct plug 30 is prohibited. In the following, the position of the rotation stop member 50 that protrudes with a protruding dimension that allows the upper end portion of the rotation stop member 50 to fit into the rail hole 41 from the upper surface (duct side surface) of the plug body 31 is referred to as a lock position.

  Further, the rotation preventing member 50 is disposed in the notch groove 60 so that the operation wall 53 is positioned in the opening of the notch groove 60 (opening on the peripheral surface side of the plug body 31), and the front surface of the operation wall 53 is pushed. It becomes the operation surface. An operation protrusion 57 is provided at the lower end of the front surface of the operation wall 53 so as to facilitate the pressing operation.

  On the other hand, the cutout groove 60 of the plug body 31 has a pair of cutout wall surfaces 61 that overlap the rotation preventing member 50 in the width direction, and a lock release side stop surface 62 and a lock release slide surface 63 that intersect the cutout wall surface 61 as peripheral walls. Prepare. The unlocking slide surface 63 inclines away from the operation surface as it moves away from the upper surface (duct side surface) of the plug body 31 in a state where the rotation stop member 50 is in the locked position. The lock release side stop surface 62 is formed above the lock release slide surface 63 substantially parallel to the operation surface.

  Further, a locking slide surface 64 parallel to the unlocking slide surface 63 is formed on the pair of cutout wall surfaces 61 as a step surface.

  Here, the rear surface of the anti-rotation member 50 (the rear surface of the side wall 51) is formed substantially parallel to the unlocking slide surface 63 so as to be in sliding contact with the unlocking slide surface 63, and the pair of side walls 51 includes A slidable contact surface 59 slidably contacting the locking slide surface 64 is formed as a stepped surface. That is, the rotation preventing member 50 is supported by the wall surface of the notch wall surface 61, the unlocking slide surface 63, and the locking slide surface 64 so as to be movable in the direction of the intersection of the notch wall surface 61 and the unlocking slide surface 63. The

  As described above, the unlocking slide surface 63 tilts away from the operation surface as it moves away from the upper surface (duct side surface) of the plug body 31, and therefore, when the rotation stop member 50 at the lock position is pushed (operation When a force perpendicular to the surface is applied), the anti-rotation member 50 slides downward away from the upper surface (side surface of the duct) of the plug body 31, and the protrusion dimension of the anti-rotation member 50 from the upper surface of the plug body 31 decreases. To do. When the protrusion dimension decreases and the upper end portion of the rotation stop member 50 is removed from the rail hole 41, the duct plug 30 is allowed to rotate. Hereinafter, the position of the rotation preventing member 50 whose upper end portion is not in the rail hole 41 is referred to as a lock release position.

  The notch wall surface 61 of the plug body 31 has a lock so that the rotation preventing member 50 does not fall out of the notch groove 60 when the rotation preventing member 50 moves in the direction of the line of intersection between the notched wall surface 61 and the unlocking slide surface 63. A side stop surface 65 is formed, and the rotation stop member 50 is provided with a lock-side restricting projection 55 projecting from the side wall 51 and a lock-release-side restricting projection 56 projecting from the operation wall 53.

  The lock-side restricting protrusion 55 protrudes from the lower ends of the pair of side walls 51 so as to be separated from each other, and the lock-side stop surface 65 is moved when the rotation stop member 50 located at the unlocked position moves to reach the locked position. It is formed in the lower end part of a pair of notch wall surface 61 so that it may contact | abut to the upper surface of the lock | rock side limitation protrusion 55, respectively. The lock-side restricting protrusion 56 is formed such that the tip thereof comes into contact with the lock-release-side stop surface 62 when the rotation stop member 50 that has been in the lock position moves to reach the lock-release position.

  Here, when rotating the duct plug 30, the rotation of the duct plug 30 is not hindered by the upper end of the rotation preventing member 50 being caught by the lower surface of the rail hole 41 (the wall surface on which the rail hole 41 is formed). The lock-side restricting projection 56 is unlocked at a position where the upper end of the rotation preventing member 50 does not protrude from the upper surface (duct side surface) of the plug body 31 (that is, a position where the upper end is flush with the duct side surface or below the duct side surface). It is formed so as to contact the side stop surface 62.

  Further, when the rotation stop member 50 is in the locked position, the lower surface of the rotation stop member 50 (the lower surface of the bottom wall 52) is formed flush with the lower surface of the plug body 31 and rotates on the lower surface of the duct plug 30. The stop member 50 becomes inconspicuous and the design is improved.

  As shown in FIGS. 1 and 2, an elastic member 37 for biasing the rotation stop member 50 toward the lock position is disposed between the plug body 31 and the rotation stop member 50. The elastic member 37 is disposed between the unlocking slide surface 63 and the operation wall 53. A plate spring formed in a rectangular shape is used for the elastic member 37, and projecting pieces 37a project from both ends in directions away from each other. Two protruding pieces 37a are formed at both ends on one side. That is, a total of four protruding pieces 37a are formed.

  As shown in FIGS. 6 and 7A and 7B, the lock release slide surface 63 of the plug body 31 has two body-side recesses 66 into which the protruding pieces 37a are inserted in the width direction (a pair of In the operation wall 53 of the rotation stop member 50, a member-side recess 58 into which the protruding piece 37a of the elastic member 37 is fitted is arranged in the width direction. The two projecting pieces 37a inserted into the main body side recess 66 of the elastic member 37 are formed away from both ends (both ends in the direction perpendicular to the projecting direction of the projecting piece 37a) and inserted into the member side recess 58. The two protruding pieces 37a to be formed are respectively formed at both ends.

  The elastic member 37 is sandwiched between the unlocking slide surface 63 and the operation wall 53 in such a manner that the protruding pieces 37a at both ends are respectively inserted into the main body side recess 66 and the member side recess 58 and bent downward. . That is, the main body side recess 66 and the member side recess 58 are positioning portions that prevent the displacement of the elastic member 37 in the width direction. The elastic member 37 biases the rotation stop member 50 to the opposite side to the direction in which the operation surface is pressed.

  Further, a wire spring formed in a substantially V shape instead of the leaf spring can be used as the elastic member 37. In other words, the wire spring is deformed so that the opening angle is reduced, and the wire spring is disposed in such a manner that one end is brought into contact with the unlocking slide surface 63 and the other end is brought into contact with the operation wall 53.

  As described above, the locking slide surface 64 is inclined so as to be away from the operation surface as it is away from the upper surface (duct side surface) of the plug body 31, so that the rotation preventing member 50 is formed by the elastic member 37 and the locking slide surface 64. Is biased toward the lock position.

  As shown in FIGS. 1 and 2, when the operation surface of the rotation stop member 50 is pushed and the rotation stop member 50 moves and displaces, the elastic member 37 is deformed so as to increase its deflection and the rotation stop member 50. Maintaining the power of

  Next, assembly of the duct plug 30 will be described. As described above, the anti-rotation member 50 is made of a synthetic resin material having elasticity, and is formed in a shape in which the upper surface and the rear surface are opened. Therefore, the anti-rotation member 50 can be deformed so that the width dimension is reduced. it can. Further, since the plug body 31 is also made of a synthetic resin material having elasticity, it can be deformed so that the width dimension of the cutout groove 60 is increased.

  The anti-rotation member 50 is pushed halfway into the notch groove 60 from the front and is held by the pair of notch wall surfaces 61, and then the elastic member 37 is disposed, and the anti-rotation member 50 is further pushed in while the elastic member 37 is bent. The rotation stop member 50 is attached to the plug main body 31 by bringing the rear surface of the rotation stop member 50 (the rear surface of the side wall 51) into contact with the unlocking slide surface 63. That is, the rotation stop member 50 is press-fitted into the cutout groove 60.

  Next, the operation of removing the duct plug 30 from the wiring duct 40 will be described with reference to FIGS. When a finger is applied to the operation surface of the rotation stop member 50 and the peripheral surface of the plug body 31 to grasp the duct plug 30 and press the operation surface, the rotation stop member 50 moves from the lock position to the lock release position. The plug 30 shifts from a state where rotation is prohibited to a state where rotation is permitted. Thereafter, the duct plug 30 is rotated while being gripped, and is removed from the wiring duct 40. When the finger is released from the operation surface, the rotation stop member 50 returns to the locked position as described above.

  When the duct plug 30 is attached to the wiring duct 40, the mounting plate 32 is attached to the rail hole in a state where the duct plug 30 is grasped (that is, the rotation of the duct plug 30 is permitted) in the same manner as described above. 41, the duct plug 30 is inserted into the wiring duct 40 and rotated. Then, the finger is removed from the operation surface and the upper end of the rotation stop member 50 is fitted into the rail hole 41, and the rotation of the duct plug 30 is prohibited. Put it in a state.

  As described above, the anti-rotation member 50 is detached from the rail hole 41 simply by grasping the duct plug 30, so that the operation of grasping the duct plug 30 to rotate the duct plug 30 and the anti-rotation member 50 are connected to the rail hole. The operation of removing from the wiring duct 40 can be performed integrally, and the work of removing the duct plug 30 (that is, the spotlight) from the wiring duct 40 is facilitated.

  Further, since the rotation stop member 50 is slid and removed from the rail hole 41, it is not necessary to apply a downward force to the operation surface, and it is not necessary to separate the operation surface from the rotation shaft 39 (see FIG. 10). The height dimension of the anti-rotation member 50 can be made smaller than that of the conventional configuration in which the member 50 is rotated. As a result, the overall height (thickness dimension) of the plug body 31 is reduced, and the portion protruding from the wiring duct 40 (plug side) The thickness dimension of the projection 38 is reduced, and the duct plug 30 becomes inconspicuous. When the duct plug 30 of the present embodiment is used for a spotlight, the overall height of the spotlight can be reduced, the duct plug 30 is not conspicuous, the design is improved, and the removal from the wiring duct 40 is easy. become.

  Further, since the elastic member 37 (see FIG. 1) is sandwiched between the operation wall 53 of the rotation stop member 50 and the unlocking slide surface 63 of the plug body 31, a member for holding the elastic member 37 is unnecessary. Further, since the rotation stop member 50 is supported by the peripheral wall of the notch groove 60, a member for rotating the rotation stop member 50 is unnecessary, and as a result, the rotation stop member 50 has a simple configuration using only the rotation stop member 50 and the elastic member 37. The state in which the rotation of the duct plug 30 is prohibited and the state in which the rotation is permitted can be switched.

  Furthermore, the plug body 31 is formed in a substantially square shape, thereby eliminating the directionality of the duct plug 30 and improving the design of the duct plug 30, and the peripheral surface of the plug body 31 when gripping the duct plug 30. The finger that touched is not slipping.

DESCRIPTION OF SYMBOLS 10 Lamp 30 Duct plug 31 Plug main body 32 Mounting plate 37 Elastic member 40 Wiring duct 41 Rail hole 50 Anti-rotation member 51 Side wall 53 Operation wall (operation surface)
55 Lock-side restriction projection 56 Lock-release-side restriction projection 58 Member-side recess 60 Notch groove 61 Notch wall surface 62 Lock-release-side stop surface 63 Lock-release slide surface 64 Lock-release slide surface 65 Lock-side stop surface 66 Body-side recess

Claims (9)

  A duct plug that is attached to a wiring duct that is formed in a rectangular tube shape and that has a rail hole penetrating through one wall surface and that has a power supply line disposed therein. A plug body that is supported by the wiring duct by sandwiching the wall of the wiring duct between the side surface of the duct and the mounting body, The operation surface is sandwiched between the rotation stop member that is disposed in the notch groove formed at the end portion and that is pushed by the one surface that intersects the side surface of the duct as the operation surface, and the plug body and the rotation stop member. An elastic member that biases the anti-rotation member in a direction opposite to the direction to be pushed and holds the anti-rotation member at a lock position where a part of the anti-rotation member protrudes from the duct surface and fits into the rail hole; The notch groove is the width along the side of the duct And a back wall that intersects the notch wall and is in sliding contact with the anti-rotation member on the surface opposite to the operation surface of the anti-rotation member, the opposite side of the operation surface of the anti-rotation member At least one of the surface of the groove and the inner wall of the cutout groove is inclined so as to move away from the operation surface as it moves away from the duct side surface when the rotation stop member is in the locked position, and when the operation surface is pushed, it is in the locked position. A duct plug characterized in that an unlocking slide surface is formed for moving the anti-rotation member to an unlocking position removed from the rail hole.   At least one of the side surface in the width direction of the rotation stop member and the cut wall of the cutout groove is inclined so as to move away from the operation surface as the rotation stop member moves away from the duct side surface in a state where the rotation stop member is in the locked position. A locking slide surface is formed to urge the anti-rotation member toward the lock position by the urging force of the elastic member, and one of the side surface in the width direction of the anti-rotation member and the notch wall of the notch groove has a lock side restriction. A projection is provided on the other side, and on the other side, a lock-side stop surface that contacts the lock-side restriction projection when the rotation stop member moves from the lock release position side to the lock position side and reaches the lock position is formed as a step surface. The duct plug according to claim 1, wherein the duct plug is provided.   The elastic member is one of a leaf spring and a wire spring that are bent between the rotation stop member and the plug main body and bent so that both ends approach each other in the direction in which the operation surface is pushed. The duct plug according to claim 1, wherein the duct plug is used.   On one of the surface opposite to the operation surface of the rotation stop member and the back wall of the notch groove, a lock release side restricting protrusion is formed that protrudes in a direction in which the operation surface is pushed, On the other hand, a lock release side stop surface is formed on which the tip of the lock release side restricting projection abuts when the rotation stop member moves from the lock position side to the lock release position side and reaches the lock release position. The duct plug according to claim 1.   The plug body is formed of an elastic material, and the anti-rotation member is formed of an elastic material, and at least one surface along the width direction is opened. The duct plug as described.   6. The surface of the plug body opposite to the side surface of the duct and one surface of the rotation stop member are flush with each other when the rotation stop member is in the locked position. The duct plug according to any one of the above items.   The lock release-side restricting protrusion is in contact with the lock-release-side stop surface at a position where the rotation stop member does not protrude from the duct side surface of the plug main body. The duct plug according to the item.   The duct according to claim 3, wherein a positioning portion that contacts the elastic member in a width direction of the rotation stopping member is formed in the rotation stopping member and the plug body that sandwich the elastic member. Plug.   A spotlight comprising the duct plug according to any one of claims 1 to 8, and a lamp attached to the duct plug.

Images