JP2010073660A - Opening and closing mechanism and luminaire - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an opening and closing mechanism capable of opening and closing an opening and closing cover simply and rapidly, and to provide a luminaire. <P>SOLUTION: The luminaire includes a body case, a wire 12 fixed on the body case and having an elasticity, the opening and closing cover 4 turnably attached on the body case, and a lock pin 14. The lock pin has a small diameter shaft part 14a inserted through an opening and closing end part of the opening and closing cover rotatably and axially displaceably, a head part 14b formed integrally on the outer side of the small diameter shaft part, a shaft part 14c formed integrally on the inner end side of the small diameter shaft part, a groove opening part 15a opening in the tip end face of the shaft part and engaged with the locking member by the head part pressed inward, an engaging groove 15 formed curvedly in the axial direction in the shaft part so as to be formed continuously from the groove opening part and elastically displacing the locking member engaged with the groove opening part by rotation of the head to the opening and closing cover side, and a groove step part 15c formed in the terminal part of the engaging groove and disengageably holding the engaging state with the wire. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an opening / closing mechanism applied to a street light, a road light, and the like, and a lighting fixture having the same.

2. Description of the Related Art Conventionally, there are known an opening / closing mechanism and a lighting fixture in which a lamp and its lighting device are built in a lighting fixture main body, and a translucent cover is attached to the light projecting opening end of the fixture main body so as to be opened and closed (for example, patents) Reference 1).
JP 2004-111284 A

  However, in such a conventional lighting fixture, the open end of the translucent cover is fixed by a plurality of set screws. Therefore, when opening the translucent cover, first, the plurality of set screws These must be tightened one by one even when the doors are to be closed one by one, and when closing the door, the opening and closing operation is complicated and takes time.

  In addition, when the lighting fixture is attached to a pole or the like and configured as a street light or the like, the set screw is removed and the installation work is performed at a high place, so the workability of the opening and closing work is further deteriorated. .

  Furthermore, in the case of a street light with the translucent cover positioned on the lower side of the fixture body, removing the set screw increases the risk of falling immediately due to gravity, so the work of removing the set screw itself is also very difficult. It is complicated.

  For this reason, the translucent cover must be positioned on the upper side of the instrument body and attached to a pole or the like. In that case, rain is easily collected on the translucent cover side that can be opened and closed, and is waterproof. It is necessary to improve the performance.

  The present invention has been made in view of such circumstances, and an object of the present invention is to provide an opening / closing mechanism and a lighting fixture that can open and close the opening / closing cover easily and quickly.

  The opening / closing mechanism according to claim 1 includes: a main body case; an elastic locked member fixed to the main body case; an open / close cover rotatably attached to the main body case; A small-diameter shaft portion that is inserted so as to be displaceable in the axial direction, a head portion integrally coupled to the outer end side of the small-diameter shaft portion, a shaft portion integrally coupled to the inner end side of the small-diameter shaft portion, A groove opening that opens at the front end surface of the shaft and engages with the member to be locked by being pushed inward of the head, and is curved in the axial direction in the shaft so as to communicate with the groove opening An engagement groove for elastically displacing the locked member engaged with the groove opening by the rotation of the head toward the opening / closing cover side, and a locked portion formed at the end portion of the engagement groove. And a locking member having an engaging step portion that holds the engaged state in a detachable manner.

  The luminaire according to claim 2 includes: a light source housing portion that houses a light source; and a main body case having a light projecting opening that projects light from the light source to the outside; an opening / closing cover that is rotatably attached to the main body case; A small-diameter shaft that is rotatably and axially displaceable through the open / close end of the open / close cover, a head integrally coupled to the outer end of the small-diameter shaft, and an inner end of the small-diameter shaft A shaft portion that is coupled to the groove portion, a groove opening portion that is opened at the tip end surface of the shaft portion and is removably engaged with the locked member by being pushed inwardly of the head portion, so as to communicate with the groove opening portion. An engagement groove that is curved in the axial direction at the shaft portion and that is engaged with the groove opening portion by the rotation of the head portion is elastically displaced toward the opening / closing cover side, and an end portion of the engagement groove A locking member having an engaging step portion that is formed and releasably holds the engaged state with the locked portion; And said that you are.

  In the above invention, the member to be locked of the opening / closing mechanism is preferably, for example, a processed spring material having elasticity, and both ends thereof may be fixed to the main body case.

  Further, the locking member is made of a metal rivet-like member in which a shaft portion is integrally coupled to a head portion such as a round plate, and is loosely fitted into the insertion hole of the opening / closing cover on the shaft portion immediately below the head portion. A concave step portion is formed to form a small-diameter shaft portion, and is attached to the insertion hole so as to prevent removal from the insertion hole.

  Then, when the locking member is pushed into the main body side and rotated by a required angle around the axis, a part of the locked member is engaged in the groove opening end at the tip of the locking member. Here, when the locking member is further rotated around the axis, the locked member is elastically deformed so as to be displaced toward the opening / closing cover along the engagement groove, and falls into the engagement step portion. Then, the further rotation of the locking member is forcibly stopped. Thereby, the door is closed in a state where the opening / closing cover is elastically adhered to the main body case side, and the closed state is maintained.

  On the other hand, when the locking member is rotated by a required angle in the direction opposite to the door closing direction in such a closed state of the opening / closing cover, the locked member engaged with the engaging groove of the locking member is engaged. Overcoming the engagement step of the groove, the engagement is released, and further, the locked member is displaced along the engagement groove toward the groove opening end side by its elastic restoring force, and discharged from the groove opening end to the outside. The engagement is released. As a result, the door holding state between the opening / closing cover and the main body case is released, so that the opening / closing cover can be opened.

  In addition, if an insertion hole is provided in the opening / closing end of the opening / closing cover, and the eye is fixed to the insertion hole, even if the locking member is frequently rotated in the insertion hole, the insertion hole is not worn. Can be reduced.

  According to the first aspect of the present invention, the locking member attached to the opening / closing cover simply locks (holds) the closed state of the opening / closing cover by rotating the locking member in the required direction by the required angle. The locked state can be released by simply rotating the lens in the opposite direction by a required angle. That is, the closed state of the open / close cover can be easily and quickly locked according to the rotation direction of the locking member, and the lock can be released.

  According to the invention described in claim 2, since the opening / closing mechanism according to claim 1 or 2 is provided as the opening / closing mechanism of the opening / closing cover of the lighting fixture, the door closing state of the opening / closing cover is simply and quickly locked. The locked state can be released.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In the accompanying drawings, the same or corresponding parts are denoted by the same reference numerals.

  FIG. 1A is a schematic view showing a state before the main part of the embodiment of the present invention is engaged, FIG. 1B is a schematic view showing a state after the engagement, and FIG. FIG. 3 is a schematic plan view of the luminaire 1 according to the first embodiment when viewed from a substantially plane, FIG. 3 is a cross-sectional view taken along line III-III in FIG. 2, and FIG.

  As shown in FIGS. 2 to 4, the luminaire 1 is a right and left light distribution type, and has a tapered main body case 2 and a bottom surface (the lower surface in FIGS. 2 and 3) of the distal end portion 2 a of the main body case 2. For example, a translucent cover 4 is provided so as to be swingable by two hinges 3 and 3.

  The main body case 2 has a rectangular bottom shape, and one end portion in the longitudinal direction (right end portion in FIGS. 1 to 3) 2b is formed on a vertical wall that rises substantially vertically and is attached to the outer surface of the vertical wall. The mounting bracket 5 which is an example of a member is fixed and formed at the mounting end. The mounting bracket 5 is attached to the upper part of a pole or an arm standing on the ground (not shown) with the cover 4 facing downward as shown in FIG.

  The main body case 2 has an upper surface 2c formed in a tapered shape by a curved surface that gradually bulges outward from the attachment end 2b toward the front (leftward in FIGS. 1 to 3) and then gradually becomes thinner. .

  The main body case 2 forms a lamp housing chamber 6 inside thereof, and a lighting device housing chamber 8 for housing the lighting device 7 on the attachment end 2b side on the right side in FIG.

  The lamp housing chamber 6 has a front light distribution mirror 9 disposed therein. The front light distribution mirror 9 is formed so that the inner surface of an aluminum flat plate is formed as a reflection surface by embossing, and light is distributed forward in the tapered direction of the case body 2, that is, forward.

  The front light distribution mirror 9 has an opening 9a at the bottom thereof, while the mirror body 9c is formed in a tapered shape by a curved surface that gradually becomes narrower from the attachment end 2b side of the body case 2 toward the tip end 2a side, A pair of side surfaces 9b, 9b facing each other in the width direction is formed by a plane.

  One side of these both side surfaces 9b, 9b is fixed in a state where the axially intermediate portion of the lamp socket 10 is penetrated in the plate thickness direction at the rear portion. A ceramic metal halide lamp 11, which is an example of a light source, is attached to the inner end of the lamp socket 10 by screwing the cap, and the lamp socket 10 is attached to the outer end of the lighting device 7 via a lead wire (not shown). It is electrically connected to the output end. For this purpose, the optical axis of the ceramic metal halide lamp 11 is arranged substantially parallel to the width direction of the front light distribution mirror 9.

  FIG. 5 is a plan view of the bottom surface of the main body case 2. As shown in FIG. 5, the body case 2 is an opposite end portion (right end portion in FIG. 5) of the hinge 3, and an upper corner portion of the attachment end portion 2 b corresponding to the open / close end portion of the open / close cover 4. Both ends of a pair of upper and lower wires 12 and 12 that are elastic locked members are fixed to the lower corner.

  As shown in FIG. 7 (A), each wire 12 is formed into a round bar shape by a metal spring wire having elasticity as a whole, and both ends 12b and 12c of the shaft portion 12a in the middle portion in the axial direction are spirals having a required diameter. It is formed in a shape. Each of the spiral end portions 12b and 12c has an outer peripheral portion formed on substantially the same plane as the shaft portion 12a and gradually toward the spiral center portion (that is, toward the drawing surface side in FIG. 7A). It is formed in a truncated cone shape.

  Then, as shown in FIG. 5, each of these wires 12 is inserted into the bottom of the main body case 2 on the side of the mounting end 2b by inserting the shaft of the set screw 13 into the spiral center of each of the spiral ends 12b, 12c. It is fixed.

  On the other hand, the opening / closing cover 4 is formed of a rectangular flat plate slightly smaller than the bottom surface of the main body case 2, and an opening having a size and shape suitable for the light projecting opening 9 a of the left and right light distribution mirror 9 is formed on the cover body. A transparent plate 4a made of glass or plastics is fitted into the opening, and a packing (not shown) is attached to the inner peripheral edge of the opening / closing cover 4 over almost the entire length thereof. It is formed so as to be in close contact with the bottom surface of the main body case 2 through packing.

  Then, the opening / closing cover 4 has a pair of upper and lower lock pins 14 and 14 in the figure, which are examples of locking members, at the positions corresponding to the fixing positions of the wires 12 and 12 on the opening and closing end sides, respectively. It constitutes a part of a latch (locking) mechanism.

  As shown in FIGS. 1A and 1B, each lock pin 14 has a small-diameter shaft portion 14a that is always inserted into the insertion hole 4b of the opening / closing cover 4, and the axial direction of the small-diameter shaft portion 14a. A head portion 14b having a diameter larger than that of the insertion hole 4b and a hollow large diameter shaft portion 14c are integrally coupled to both ends. The small-diameter shaft portion 14a has an outer diameter that is smaller than the insertion hole 4b that penetrates the opening / closing cover 4 in the plate thickness direction, and is inserted into the insertion hole 4b with play. For this purpose, the small-diameter shaft portion 14a is configured to be rotatable about the axis within the insertion hole 4b and to be slightly displaceable in the axial direction.

  The head portion 14b is formed to have a larger diameter than the insertion hole 4b, is formed in a required shape such as a round plate shape, and a fitting groove 14c into which the shaft tip portion of a plus or minus driver is fitted on the top end surface. Is formed.

  The large diameter shaft portion 14c is formed to have a larger diameter than the insertion hole 4b. Therefore, each lock pin 14 is held between the inner and outer sides of the insertion hole 4b with play in the axial direction by the head 14b and the end 14c having a larger diameter than the insertion hole 4b. Dropping from the hole 4b is prevented, and it is always mounted in the insertion hole 4b. Further, the large-diameter shaft portion 14 c has a curved engagement groove 15 that engages with the wire 12 in the axial direction.

  As shown in FIGS. 6A, 6B, and 6C, the engagement groove 15 forms a groove opening 15a that opens outward on the tip surface of the large-diameter shaft portion 14c. The groove opening portion 15a is formed in the diameter direction of the large-diameter shaft portion 14c, and the groove width is formed slightly larger than the diameter of the shaft portion 12a of the round bar-shaped wire 12, and is detachably engaged with the wire 12. It comes to match. Further, the groove opening end 15a is formed as a tapered guide surface whose opening edge is expanded outwardly by a curved surface, and the tip surface of the large-diameter shaft portion 14c abuts on the round bar-shaped wire 12. Sometimes, the groove opening end 15a can be guided to the wire 12 side.

  The engaging groove 15 has a curved sliding groove portion 15b communicating with the groove opening end 15a in the large-diameter shaft portion 14, and the end portion of the curved sliding groove portion 15b has a groove opening portion 15a side (see FIG. 1 (A), the groove step portion 15c is bent slightly downward), and the wire 12 that has entered the groove step portion 15c is locked by the groove step portion 15c so that the locked state is maintained. Yes. The groove step portion 15c is formed at a position shifted from the groove opening 15c by a required angle in the circumferential direction by the curved sliding groove portion 15b. In FIG. 7, reference numeral 16 denotes a washer made of plastic or the like, and reference numeral 17 in FIG. 1 denotes a metal or the like fixed in the insertion hole 4b.

  Next, a method for locking the closed state of the opening / closing cover 14 will be described.

  First, when locking the closed state of the open / close cover 14, as shown in FIG. 2, after the open / close cover 4 is covered on the bottom surface of the main body case 2 and closed, each lock pin 14 attached to the open / close cover 4 is closed. A shaft tip portion of a driver (not shown) is fitted into the fitting groove 14c of the head portion 14b, and the head portion 14b is slightly pushed inward. Then, the front end surface of the lock pin 14 comes into contact with the shaft portion 12 a of the wire 12. Therefore, when the head portion 14b is rotated about its axis, the shaft opening portion 12a at the tip of the lock pin 14 substantially coincides with the shaft portion 12a of the wire 12, and the shaft portion 12a enters the groove opening portion 15a. Insert. For this reason, since the lock pin 14 slightly falls inward (downward in FIG. 1A), the insertion can be recognized.

  Therefore, as shown in FIG. 1B, when the head 14b is further rotated by the required angle in the same direction, the wire shaft portion 12a slides in the curved sliding groove portion 15b of the lock pin 14, and the wire 12 When the wire shaft portion 12a is displaced by being guided upward in the drawing against the elastic force and enters the engagement step portion 15c, the displacement state of the wire shaft portion 12a is maintained. At this time, since both end portions 12b and 12c of the wire shaft portion 12a are fixed to the case main body 2, the case main body 2 is relatively elastically displaced toward the opening / closing cover 4 by the amount of the displacement. That is, the door closing state can be locked in a state where the opening / closing cover 4 is elastically and firmly adhered to the main body case 2 by the elastic restoring force of the wire 12.

  On the other hand, when releasing the lock of the open / close cover 4 in such a closed state, the head 14b of each lock pin 14 is simply rotated by a required angle in the direction opposite to the lock direction.

  Then, the wire shaft portion 12a engaged with the engagement step portion 15c of the lock pin 14 slides over the engagement step portion 15c by its elastic restoring force, and slides on the curved sliding groove portion 15b. Thus, the wire shaft portion 12a is pushed out of the groove opening portion 15a by the further rotation of the large-diameter shaft portion 14c, and the engagement between the wire shaft portion 12a and the engaging groove 15 is released. The Thereby, the lock of the closed state of the open / close cover 4 is released again, and the door can be opened.

  Therefore, according to this opening / closing mechanism 1, while the door closed state of the opening / closing cover 4 is locked to the main body case 2 by the simple rotation direction of the lock pin 14, the locked state can be released. Therefore, the closed state of the opening / closing cover 4 can be easily and quickly locked, and the lock can be released, thereby improving the workability. In addition, since each lock pin 14 is always mounted in each insertion hole 4b of the opening / closing cover 4 in a state that prevents the lock pin 14 from being pulled out, it is possible to prevent the lock pin 14 from dropping during the rotation operation of each lock pin 14 in advance. And the safety of these operations can be improved.

(A) is a schematic diagram which shows the state before the engagement of the principal part of one Embodiment of this invention, (B) is a schematic diagram which shows the state after the engagement. The schematic plan view of the lighting fixture which concerns on the 1st Embodiment of this invention. III-III sectional view taken on the line of FIG. The external appearance side view of the lighting fixture shown in FIG. The bottom view of the main body case of the lighting fixture shown in FIG. (A) is a front view of the lock pin shown in FIG. 1, (B) is a side view of the lock pin, and (C) is a bottom view of the lock pin. (A) is a perspective view of the wire shown in FIG. 5, (B) is a bottom view when a washer is fitted to the lock pin shown in FIG.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1,1A ... Lighting fixture, 2 ... Main body case, 2a ... End part of main body case, 2b ... Installation end of main body case, 3 ... Hinge, 4 ... Opening / closing cover, 4b ... Insertion hole of opening / closing cover, 5 ... Mounting bracket , 6 ... Lamp housing chamber, 7 ... Lighting device, 8 ... Lighting device housing chamber, 9 ... Front light distribution mirror, 9a ... Bottom opening end of front light distribution mirror, 10 ... Lamp socket, 11 ... Ceramic metal halide lamp, DESCRIPTION OF SYMBOLS 12 ... Wire (locked member), 14 ... Lock pin (locking member), 14a ... Small diameter shaft part of a lock pin, 14b ... Head part of a lock pin, 14c ... Large diameter shaft part of a lock pin, 15 ... Engagement Joint groove, 15a ... Opening portion of engagement groove, 15b ... Curved sliding groove portion of engagement groove, 15c ... Groove step portion of engagement groove, 16 ... Washer, 17 ...

Claims (2)

With the body case;
An elastic locked member fixed to the body case;
An opening / closing cover pivotally attached to the body case;
A small-diameter shaft that is rotatably and axially displaceable through the open / close end of the open / close cover, a head integrally formed on the outer end of the small-diameter shaft, and an inner end of the small-diameter shaft A coupled shaft portion, a groove opening portion that opens at the tip end surface of the shaft portion and engages with the member to be locked by being pushed inwardly of the head portion, and communicates with the groove opening portion. Formed in the engaging groove that is curved in the axial direction in the shaft part and elastically displaces the locked member engaged with the groove opening by the rotation of the head toward the opening / closing cover side, and at the end of this engaging groove A locking member having an engaging step portion that releasably holds the engaged state with the locked portion to be locked;
Opening and closing mechanism characterized by comprising. A main body case having a light source accommodating portion for accommodating a light source and a light projection opening for projecting light from the light source to the outside;
An opening / closing cover pivotally attached to the body case;
A small-diameter shaft that is rotatably and axially displaceable through the open / close end of the open / close cover, a head integrally formed on the outer end of the small-diameter shaft, and an inner end of the small-diameter shaft A coupled shaft portion, a groove opening portion that opens at the tip end surface of the shaft portion and engages with the member to be locked by being pushed inwardly of the head portion, and communicates with the groove opening portion. Formed in the engaging groove that is curved in the axial direction in the shaft part and elastically displaces the locked member engaged with the groove opening by the rotation of the head toward the opening / closing cover side, and at the end of this engaging groove A locking member having an engagement step portion that is engaged and releasably holds the engaged state with the locked portion;
A lighting fixture comprising:

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