JP4699132B2 - Latch device and lighting apparatus - Google Patents

Description

  The present invention relates to a latch device for stopping a translucent member such as a glass on the surface of a tunnel lighting fixture installed in a tunnel or the like, and a lighting fixture using the same.

  A conventional tunnel lighting fixture of this type has adopted a latch device as a holding means for the translucent member. A first conventional example is shown in FIG. That is, in the first conventional example, the opening 51 is closed through the instrument main body 52 provided with the opening 51 for irradiating the light of the lamp 50 and the rubber packing 53 disposed at the opening edge of the instrument main body 52. The translucent member 54 has one end connected to the instrument main body 52 with a hinge 55 and the other end held on the instrument main body 52 with a latch device 56 so as to be openable and closable. The latch device 56 includes a support tool 57 attached to the instrument body 52, a latch receiver 59 connected to the support tool 57 via a shaft 58, and a latch tool 61 connected to the latch receiver 59 via a shaft 60. It has. On the other hand, the translucent member 54 is provided with a latch hook 62 for latching the latch 61.

  A second conventional example is shown in FIGS. In the second conventional example, in the first conventional example, the opening 51 of the instrument main body 52 is closed by the frame 63 having the translucent member 54 fixed to the center. The frame 63 and the instrument main body 52 are separated from each other. A latch hook 62 of the first conventional example that is connected by a hinge 55 and receives the latch 61 is substituted by a hook 64 provided on the frame 63 (see Patent Document 1).

In FIG. 6, FIG. 6A shows a state in which the latch tool 61 is detached from the hook tool 64. In this case, the frame 63 having the translucent member 54 fixed at the center can be opened from the instrument body 52, and lamp replacement or the like can be performed. FIG. 7B shows a state in which the latch receiver 59 is being rotated while the latch tool 61 is hooked on the hook 64, and FIG. In this state, the opening 51 is completely closed by the frame 63 having the translucent member 54 fixed at the center. In this case, since the shaft 60 of the latching tool 61 gets over the line connecting the engagement point 64a of the latching tool 61 with the hanging portion 64 and the shaft 58, the latched state is maintained.
JP 2004-165129 A

  The conventional latch device holds the translucent member 54 or the frame 63 at the edge of the opening 51 by rotating the latch tool 61 and the latch receiver 59 about the two shafts 58 and 60 as the rotation center. . In this case, the latching tool 61 is movable in the direction in which the translucent member 54 or the frame 63 is held, and at the same time, is moved in a direction perpendicular to the holding direction. For this reason, it is necessary to provide the latch hook 62 so as not to move in a direction perpendicular to the direction in which the latch 61 is held, or to have a structure having the same function.

  As a result, the latch device 62 is required in the first conventional example, and the processing cost for fixing it to the translucent member 54 is high. In the second conventional example, there is a cost for fixing the frame 63 itself and the translucent member 54 to the frame 63 and a cost for processing the frame 63 with the same structure as the latch hook. .

  Accordingly, an object of the present invention is to provide a latch device and a lighting fixture that can reduce the number of parts by eliminating the need for a latch hook and reduce the cost.

The latch device of the present invention holds the first member at the locking position of the second member. The support is fixed to the second member. The latch device is provided on the support device so as to be able to be engaged with and disengaged from the first member located in the vicinity of the locking position, and moves the first member from the vicinity position to the locking position. It is provided in the said support tool so that a movement is possible. The latch receiver is rotatably provided on the support tool, and the latch tool is slidably contacted with the latch tool by a turning operation so that the first member moves from the vicinity position to the locking position. The latch device is supported by the cam portion so as to have a cam portion to be propelled and to hold the first member in the locking position. The latch device has a shaft, the cam portion has a convex cam surface with which the shaft is slidably contacted, and a concave portion or a flat portion formed continuously with the cam surface and into which the shaft is fitted, When the cam portion is rotated, the shaft is moved so that the first member is moved to the locking position by the latch tool, the cam portion is rotated, and the shaft is moved to the concave portion or the plane portion. By fitting, the latch member is supported so as to hold the first member in the locking position.

In the above configuration, the support tool has a groove, the latch tool is rotatably attached to the support tool with the shaft inserted into the groove, and the cam portion of the latch receiver is rotated. By sliding contact with the shaft, the shaft is moved along the groove.

  In the above configuration, the latch receiver has a shape surrounding the support.

  In the above-described configuration, the latch device has a spring property at a portion that receives the first member.

In the above configuration, the latch receiver is rotatably connected to the support by a latch receiving shaft different from the shaft, and the latch receiving shaft is disposed closer to the first member than the shaft.
The latch receiver pushes the latch tool to release the first member from the locking position by a turning operation in a direction in which the cam portion releases the support of the latch tool.

  The lighting fixture of this invention is a lighting fixture provided with the latch apparatus of the said structure, Comprising: The said 2nd member is a fixture main body, The said 1st member is a translucent member which opens and closes the opening of the said fixture main body. It is.

According to the latch device of the present invention, since the first member can be moved from the position near the locking position of the second member to the locking position and held by the latching tool, a conventional latch hook is necessary. In addition, the number of parts can be reduced and the cost can be reduced. By providing the cam part with a recess or a flat part, the shaft can be locked to the concave part or the flat part and the latch receiver can be fixed. Therefore, the cam part is frictionally locked to the shaft and the latch receiver is fixed. In comparison, the latch device can be stably supported, and the first member can be stably held by the second member.

  Since the shaft is provided in the latch device and the groove in which the shaft is movable is provided in the support device, the cam portion can be slidably contacted with the shaft and the shaft can be propelled and moved, so that the configuration is simplified. That is, when a groove is formed in the latch tool and a shaft is provided in the support tool, it is necessary to separately provide a portion where the cam portion is in sliding contact with the latch tool, which complicates the configuration.

  If the latch receiver is outside the support, it will look good.

  Since the latch device has a spring property, the first member can be stably held against the dimensional variation of the first member and the displacement due to various factors of the first member.

  When the latch receiving shaft for attaching the latch receiver to the support member is disposed on the first member side with respect to the shaft for attaching the latch tool to the support member, the first member is released from the second member. In addition, since the latch tool can be driven in a direction away from the locking position by the rotation operation of the latch receiver, the latch device can be easily opened and closed.

  According to the lighting apparatus of the present invention, since the opening of the apparatus main body is held closed by the translucent member by the latch device, the number of parts can be reduced and the cost can be reduced.

  A tunnel luminaire provided with a latch device according to a first embodiment of the present invention is shown in FIGS. That is, in this tunnel lighting fixture, the opening 2 of the fixture main body 1 is closed with the translucent member 3, and the translucent member 3 is held by the fixture main body 1 with the latch device 4. The tunnel lighting fixture is usually installed in a state where the translucent member 3 is on the ground side with respect to the fixture body 1 in the tunnel.

  The instrument main body 1 has a sealed box shape in which an opening 2 is formed on a lower surface, and a mounting plate 5 is fixed to a top portion by a connector 17 such as a screw. The attachment plate 5 is attached to the wall surface or top surface in the tunnel. A lighting device 6, a reflecting plate 7, and a lamp 8 are disposed in the appliance main body 1. Reference numeral 9 denotes a lamp holding spring, and 10 denotes a hermetic insertion portion for the power line.

  There are one or a plurality of lamps 8, and the opening 2 irradiates light from these lamps 8.

  The translucent member 3 is, for example, a glass plate, and closes the translucent member 3 through the rubber packing 11 as an airtight member in the opening 2. The rubber packing 11 is disposed at the opening edge of the instrument body 1.

  One end of the translucent member 3 is rotatably attached to the instrument body 1 by a hinge 12.

  The other end of the translucent member 3 is held in a closed state by the latch device 4. The latch device 4 mainly includes a support tool 13, a latch tool 14, and a latch receiver 15. These are formed by, for example, metal fittings.

  The support 13 has a shape obtained by bending a plate material into a U-shape comprising a central piece 16 and both side pieces 20, and an attachment hole (not shown) is formed in the central piece 16, and screws and the like are attached through the attachment hole. It is attached to the instrument body 1 with a tool. A vertically long slit-like groove 18 parallel to the central piece 16 serving as a mounting surface is formed on the upper side of both side pieces 20, and a shaft insertion hole 19 is formed on the lower side thereof.

  The latching tool 14 bends the plate material into a substantially L shape composed of a first piece 21 and a second piece 22, and the first piece 21 forms a latch portion 23 by folding the tip into a horizontal U shape. Longitudinal elasticity is imparted, and the tip 24 stands upright. A plate member 25 having flexibility or elasticity is attached to the upper surface of the latch portion 23. Thus, when the translucent member 3 is made of glass or the like, even if the latch portion 23 is engaged with the translucent member 3, the translucent member 3 can be prevented from being damaged, and the rubber that becomes a locking position by elasticity. It is possible to cope with variations in the position of the packing 11. The second piece 22 is provided with connecting pieces 26 on both sides, the upper ends of the connecting pieces 26 are extended upward and toward the latch portion 23, a first shaft 27 is provided between the extending ends, and the first shaft 27 is inserted into the groove 18. As a result, the first shaft 27 is supported by the groove 18 so that the latch tool 14 is rotatable at an arbitrary position and is movable along the groove 18.

  The latch receiver 15 has a plate shape in which the operation portion 29 faces the U-shaped support tool 13, and covers the support tool 13 by covering the cam parts 30 bent at the lower ends of both sides on both sides of the support tool 13. is doing. In the figure, the cam portion 30 is inside the connecting piece 26. A second shaft 31 that is a latch receiving shaft is passed between the cam portions 30, and both ends of the second shaft 31 are inserted into the shaft insertion hole 19 of the support 13. Accordingly, the latch receiver 15 is rotatably attached to the support tool 13 by the second shaft 31 disposed on the translucent member 3 side with respect to the first shaft 27, and is rotated by the operation portion 29. It can be rotated. The periphery of the cam portion 30 is a cam surface 32 that is in sliding contact with the first shaft 27. The cam surface 32 has a shape that moves the latch tool 14 along the groove 18 via the first shaft 27 by the rotation of the latch receiver 15. That is, the cam surface 32 is slidably contacted with the first shaft 27 while the operation portion 29 is rotated from the horizontal posture to the vertical posture by approximately 90 degrees around the second shaft 31, and the upper end portion from the lower end portion of the groove 18. The first shaft 27 is propelled to push up. Further, a recess 33 in which the first shaft 27 is fitted is formed on the cam surface 32 so that the operation portion 29 is held at a position where the first shaft 27 is pushed up to the upper end of the groove 18. The latch receiver 15 is configured such that when the operation portion 29 is rotated from the vertical posture to the horizontal posture, that is, when the operation portion 29 is rotated in a direction to release the holding of the translucent member 3, the operation portion 29 is the second piece of the latch tool 14. The first shaft 27 can be forcibly moved from the upper end portion of the groove 18 to the lower end portion by engaging the upper end portion of the groove 22 and pushing down the latch tool 14 with the operation portion 29.

  The operation of this latch device will be described. FIG. 1A shows that the translucent member 3 as the first member is held by the latch portion 23 of the latch tool 14 at the locking position of the instrument body 1 as the second member, that is, the position where the rubber packing 11 is compressed. It is in a state. At this time, the operation portion 29 of the latch receiver 15 is in a vertical posture, and the first shaft 27 is positioned at the upper end portion of the groove 18 and is supported by being fitted into the concave portion 33 of the cam surface 32. In FIG. 1B, the latch tool 14 moves downward from the holding state, the translucent member 3 is rotated by the hinge 12, and the free end of the translucent member 3 is in the vicinity from the locking position of the instrument body 1. It is in a state away from the position. However, in the figure, the rubber packing 11 and the translucent member 3 are substantially in contact with each other due to the restoration of the rubber packing 11. At this time, the operation portion 29 of the latch receiver 15 is in a substantially horizontal posture, and the first shaft 27 of the latch tool 14 is moved to the lower end portion of the groove 18. Further, at this time, the upper end portion of the second piece 22 of the latch 14 is pushed down by the operation portion 29 of the latch receiver 15. FIG. 1 (c) shows a state in which the latch tool 14 is rotated about the first shaft 27 and detached from the translucent member 3. Thereby, the translucent member 3 can be freely rotated by the hinge 12, and the opening 2 can be opened. Therefore, maintenance such as lamp replacement can be performed.

  1 (b) and 1 (c), the translucent member 3 is positioned in the vicinity of the locking position of the instrument body 1, and the latch tool 14 is translucent by rotating the latch tool 14. This is a state of being engaged with and disengaging from the sex member 3.

  On the other hand, when closing the opening 2 of the instrument main body 1 with the translucent member 3, the latch tool 14 is manually rotated in the direction opposite to the arrow from the state of FIG. The 14 latch portions 23 are engaged with the lower surface of the translucent member 3 to obtain the state shown in FIG. Next, the operation portion 29 of the latch receiver 15 is rotated from the horizontal posture to the vertical posture shown in FIG. At this time, since the first shaft 27 is pushed up by the cam surface 32, the first shaft 27 moves from the lower end portion to the upper end portion along the groove 18, and the first shaft 27 fits into the recess 33 of the cam surface 32. The latch receiver 15 is also prevented from rotating to a horizontal posture. As the first shaft 27 moves vertically upward, the latch portion 23 of the latch tool 14 moves upward to press the translucent member 3 against the locking position of the instrument body 1, that is, the position where the rubber packing 11 is compressed. .

  As a second embodiment of the present invention, the cam portion 30 of the latch receiver 15 of the first embodiment may be positioned inside the support 13.

  In the present invention, the groove 18 may be provided in the latch tool 14 and the first shaft 27 may be provided in the support tool 13. In this case, a portion where the cam portion 30 is in sliding contact is provided in the latch tool 14.

  The groove 18 may be a long hole or a bottomed groove. In this case, the first shaft 27 is separately provided on each connecting piece 26 of the latch device 14.

  Since the concave portion 33 supports the latch device 14 with the latch receiver 15, the concave portion 33 may be a flat surface instead of the concave portion 33 of the cam surface 32, and may be a curved surface that can be frictionally locked to the first shaft 27.

  The translucent member 3 may be held by a frame as in the prior art. However, the latching portion of the frame is not necessary.

  Further, this latch device can be applied to devices other than lighting equipment, and in this case, the member to which the support is fixed may be movable.

  In the latch device 14, the first shaft 27 is inserted into the groove 18. However, the groove 18 may be formed in an L-shaped groove or groove having a longitudinal groove and a transverse groove, and in this case, the first shaft 27 is formed along the transverse groove or the transverse groove. Since the latch member 14 can be engaged with and disengaged from the translucent member 3 by the movement of the one shaft 27, the latch member 14 may not be provided to be rotatable.

The latch apparatus of 1st Embodiment of this invention is shown, (a) is sectional drawing of a latched state, (b) is sectional drawing of a latch release state, (c) is the latch tool separated from the translucent member. Sectional drawing of a state, (d) is a side view of a latch receptacle. It is sectional drawing of the tunnel lighting fixture of 1st Embodiment. (A) is a side view which shows the relationship between a latch receptacle and a support, (b) is the top view. It is sectional drawing of the tunnel lighting fixture of a 1st prior art example. It is sectional drawing of the tunnel lighting fixture of a 2nd prior art example. The latch device is shown, in which (a) is a cross-sectional view in an unlatched state, (b) is a cross-sectional view in the middle of the latch, and (c) is a cross-sectional view in the latched state.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Instrument body 2 Opening 3 Translucent member 4 Latch device 11 Rubber packing 13 Support tool 14 Latch tool 15 Latch receiver 23 Latch part 27 First shaft 29 Operation part 30 Cam part 31 Second shaft 33 Concave part

Claims (6)

A latch device that holds the first member in the locking position of the second member,
A support fixed to the second member;
The support member is provided on the support member so as to be detachable from the first member located in the vicinity of the locking position, and moves the first member from the vicinity position to the locking position. A latching tool movably provided on the
A cam portion that is rotatably provided on the support tool, and that slides on the latch tool by a turning operation to propel the latch tool so that the first member moves from the vicinity position to the locking position. And a latch receiver that supports the latch device with the cam portion so as to hold the first member in the locking position ,
The latch device has a shaft, the cam portion has a convex cam surface with which the shaft is slidably contacted, and a concave portion or a flat portion formed continuously with the cam surface and into which the shaft is fitted, When the cam portion is rotated, the shaft is moved so that the first member is moved to the locking position by the latch tool, the cam portion is rotated, and the shaft is moved to the concave portion or the plane portion. A latch device that supports the latch tool so as to hold the first member in the locking position by fitting . The support has a groove, and the latch is pivotally attached to the support with the shaft inserted into the groove, and the cam portion of the latch receiver is pivoted on the shaft. The latch device according to claim 1, wherein the shaft is moved along the groove in sliding contact. The latch device according to claim 1, wherein the latch receiver has a shape surrounding the support . The latch device according to claim 1, 2 or 3, wherein a portion of the latch device that receives the first member has a spring property . The latch receiver is pivotally connected to the support by a latch receiver shaft different from the shaft, the latch receiver shaft is disposed on the first member side of the shaft, and the latch receiver is the latch device. 5. The device according to claim 1, wherein the latch member is pushed to release the first member from the locking position by rotating the cam portion in a direction to release the support. The latch device according to one item. It is a lighting fixture provided with the latch apparatus as described in any one of Claims 1-5, Comprising: The said 2nd member is a fixture main body, The said 1st member opens and closes the opening of the said fixture main body. A luminaire that is a translucent member .

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