JPH03181110A - Ballast for discharge lamp - Google Patents

Abstract

PURPOSE:To prevent a ballast main body from slipping out of its original position by a shock by keeping gaps between stoppers fixed to mounting plates and the edges of a base in the specified state. CONSTITUTION:Cut-out sections 7 are made in a base 2a and fixation strips 5 are placed on mounting plates 3a corresponding to the cut-out sections 7, bent, and fixed to the cut-out sections 7 through vibration isolation elastic bodies 4. Gaps (a) between stoppers 8 fixed to the mounting plates 3a and the edges of the base 2a opposite thereto are made smaller than the thickness a' of the edges, projected on the fixation strips 5, of the elastic bodies 4. Thereby, even if a shock applies the stoppers 8 to the base 2a, the elastic bodies 4 are deformed within their elastic limit, their restitutive force is kept, and a ballast main body 1 is prevented from slipping out of its original position.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a ballast for a discharge lamp.

[Conventional technology]

6 and 7 show a conventional example of a ballast main body and a ballast for a discharge lamp. The ballast main body 1 has an iron core and a winding (both not shown) coupled to each other and is fastened to a base 2. The stabilizer main body 1 configured in this manner is attached to the mounting plate 3 with a plurality of vibration-proofing elastic bodies 4 interposed therebetween. For installation, use the mounting piece 5 provided on the mounting plate 3.
Thus, the base 2 is pressed via the pressing portion 6 of the vibration isolating elastic body 4. In this way, vibrations of the ballast are prevented from being transmitted to the luminaire. [Problems to be Solved by the Invention] In the above-mentioned prior art, the pressing part of the base of the stabilizer main body, which is pressed against the plate, is Since it is formed in a straight line along the longitudinal direction of the mounting plate, if a force such as an impact is applied in the longitudinal direction (X direction in Fig. 7), the position of the mounting plate and the base will shift. There was a problem that it wouldn't go back to normal.

The present invention has been made in view of the above points, and it is an object of the present invention to provide a ballast for a discharge lamp that can prevent the ballast main body from shifting due to impact or the like.

[Means for solving the problem] The above purpose is to provide a notch in the base, provide a mounting piece on the mounting plate corresponding to the notch, and connect this mounting piece to the notch through an elastic body for vibration isolation. This is achieved by bending and locking and making the gap between the stopper provided on the mounting plate and the opposite end of the base smaller than the thickness of the side edge protruding from the mounting piece of the vibration isolating elastic body. be done.

[Effect]

Since the above means is provided, even if a force such as an impact is applied and the stopper provided on the mounting plate comes into contact with the base, the vibration-proofing elastic body can be suppressed to deformation within its elastic limit, and the vibration-proofing The elastic body retains its restoring force.

In other words, the gap between the stopper provided on the mounting plate and the end of the base is made smaller than the thickness of the side edge of the vibration isolating elastic body inserted into the notch, so that external forces such as impact may be applied and the position of the base may be affected. Even if it shifts and hits the stopper on the mounting plate, the side edge of the vibration-isolating elastic body located between the notch in the base and the mounting piece on the mounting plate will not be completely crushed, and the elastic limit will be exceeded. As a result, the relative position between the base and the mounting plate returns to its original state due to the elastic restoring force of the vibration isolating elastic body.

〔Example〕

The present invention will be explained below based on the illustrated embodiments. An embodiment of the present invention is shown in FIGS. 1-3.

Note that parts that are the same as those in the prior art are designated by the same reference numerals, and therefore their explanations will be omitted. In this embodiment, a notch 7 is provided in the heel 2a, and a mounting piece 5 is provided in the mounting plate 3a corresponding to this notch 7.
This mounting piece 5 is bent and locked in the notch 7 via the vibration-proofing elastic body 4, and a stopper 8 provided on the mounting plate 3a,
A gap a between the opposing end of the base 2a is made smaller than the thickness a' of the side edge of the vibration-proofing elastic body 4 protruding from the mounting piece 5. By doing this, even if a force such as an impact is applied and the stopper 8 provided on the mounting plate 3a comes into contact with the base 2a, the vibration-proofing elastic body 4 can be suppressed to deform within the elastic limit. The vibration-proofing elastic body 4 maintains its restoring force, and it is possible to obtain a ballast for a discharge lamp that can prevent the ballast main body 1 from shifting due to impact or the like.

That is, the base 2a of the stabilizer main body 1 has a plurality of notches 7.
A vibration isolating elastic body 4 is inserted into the notch 7, and a mounting piece 5 provided on the mounting plate 3a is bent into the notch 7 and attached via the vibration isolating elastic body 4. A stopper 8 that locks onto the base 2a is provided on the ballast main body 1 side of the mounting plate 3a, and the gap a between the stopper 8 and the base 2a is closed by a vibration-isolating elastic body 4.
The thickness is made smaller than the thickness a' of the side edge protruding from the mounting piece 5 (see Fig. 1). By doing this, for example, a large force Fx such as an impact may be applied to the mounting plate 3a from the left direction in FIG.
2, even if the side surface of the base 2a and the side surface of the stopper 8 come into contact, the side edge of the vibration-isolating elastic body 4 will not be completely crushed. , the deformation can be suppressed to within the elastic limit. Therefore, when a large force Fx such as an impact is removed, the base 2a and the mounting plate 3a
is again changed from Fig. 2 to Fig. 1 due to the elasticity of the vibration isolating elastic body 4.
Return to the original state as shown in the figure.

Also, the base 2 is attached along the mounting plate 3a at the base of the stopper 8.
The thick part 8a extending to the lower part of a is used as a vibration damper sandwiched between the mounting plate 3a and the base 2a in the event of a fall impact in the y direction shown in FIG. This is to avoid extreme pressure on the bottom part 4a of the elastic body 4 and the heat dissipation member described later, and the thick part 8a of the stopper 8
The distance 1) between the bottom part 2a of the vibration isolating elastic body 4 is made smaller than the thickness bo of the bottom part 4a of the vibration isolating elastic body 4. Distance 1 like this
] and the above-mentioned gap a are necessary for vibration isolation between the base 2a and the mounting plate 3a.

As shown in FIG. 3, the vibration isolating elastic body 4 is
Grooves 9 and bent portions 10 are provided between the mounting plate 3a and the base 2a at positions corresponding to the notches 7 provided in the base 2a shown in the figure (FIG. 3(a) 1!Ir1), and the mounting plate 3a and the base 2a are sandwiched.

Then, bend the notch 7 inward from the bent portion 10, and bend the mounting piece 5 through the groove 9 of the vibration-proof elastic body 4 (see Fig. 3).
b)), the ballast main body 1 is fixed to the mounting plate 3a.

In this way, according to this embodiment, vibrations generated by the ballast main body are prevented from being transmitted to the B-zemei equipment via the mounting plate, and the ballast main body is prevented from being transmitted to the BZ-mei instrument through the mounting plate. Even when it comes into contact with the stopper, the vibration isolating elastic body is only deformed within its elastic limit, so that the mutual positions of the stabilizer body and the mounting plate can be easily restored to their original positions.

Note that this embodiment has been described with respect to the case where the base has a notch, the mounting plate has a mounting piece, and the stopper is provided in stages C, but even if the combination is changed, such as providing a mounting piece on the base, a stopper, and a notch on the mounting plate, the same effect as described above will still apply. It is possible to achieve the same effects as in the case of .

FIG. 4 shows another embodiment of the vibration-proof elastic body of the present invention. This example is manufactured by bending the vibration-proofing elastic body 4A into a predetermined shape. By doing this, there is no need to bend inward from the bent part of the notch after installation as in the case described above, and it is suitable for use by installing it on the base side in advance when assembling the ballast. . Of course, it goes without saying that this vibration-isolating elastic body 4A is also formed by molding an elastic material with high restorability and vibration absorption, as in the case described above.

FIG. 5 shows yet another embodiment of the invention. In this embodiment, a heat radiation member 11 is provided between the ballast main body l and the mounting plate 3a. By doing this, the heat generated from the ballast body is radiated through the heat radiating member 11, and the temperature of the ballast can be lowered than in the above case.

The heat dissipation member 11 is a sheet-like or corrugated elastic member (for example, a corrugated aluminum member) that has good restorability, vibration isolation, and conductivity, and is more flexible than the vibration isolating elastic body 4. be. Before installation, it is slightly thicker than the thickness bo of the bottom part 4a of the vibration isolating elastic body 4, and after installation, it is slightly thicker than the thickness bo of the stabilizer body l.
The base 2a and the mounting plate 3a of the stopper 8 are in sufficient contact with each other, and even if the base 2a and the thick part 8a of the stopper 8 are compressed until they come into contact with each other during a drop impact, the deformation remains within the elastic limit.

〔Effect of the invention〕

As mentioned above, the present invention prevents fff of the stabilizer body due to impact etc.
Since displacement is prevented, it is possible to obtain a ballast for a discharge lamp that can prevent the ballast main body from shifting due to impact or the like.

[Brief explanation of drawings]

FIG. 1 is a vertical side view of one embodiment of the ballast for discharge lamps of the present invention, FIG. 2 is a vertical side view showing the state when an external force is applied to the mounting plate of FIG. 1, and FIG. ) (b) also shows an example of the vibration-proof elastic body, (a) is a perspective view before installation, (b) is a vertical side view showing the installation state, and Fig. 4 is a discharge lamp of the present invention. FIG. 5 is a longitudinal cross-sectional side view of yet another embodiment of the ballast for discharge lamps of the present invention, and FIG. A perspective view of the ballast main body of the ballast. FIG. 7 is a perspective view of the ballast for a discharge lamp showing a state in which the ballast main body of FIG. 6 is attached to a mounting plate. DESCRIPTION OF SYMBOLS 1... Stabilizer body, 2a... Base, 3a... Mounting plate, 4.4A... Vibration-proofing elastic body, 4a... Bottom of vibration-proofing elastic body, 5... Mounting Piece, 7... Notch, 8.
... Stopper, 8a... Thick part of stopper, 11...
・Heat dissipation member No. 2 Figure 1 (volume i volume) → Said diagram (a) (b) Figure 1!

Claims (1)

[Claims] 1. In a discharge lamp ballast in which a ballast main body, in which an iron core and a winding are combined and fastened to a base, is attached to a mounting plate via an elastic body for vibration isolation, a notch is provided in the base, and the notch is inserted into the base. A mounting piece is provided on the corresponding mounting plate, and the mounting piece is bent and locked in the notch via the vibration-isolating elastic body, and a stopper provided on the mounting plate and a base facing thereto. 2. A ballast for a discharge lamp, characterized in that a gap with an end of the elastic body for vibration isolating is made smaller than a thickness of a side edge of the vibration-proofing elastic body protruding from the mounting piece. The discharge lamp ballast is characterized in that the distance between the thick part of the stopper and the bottom part of the base facing the thick part is smaller than the thickness of the bottom part of the vibration-proofing elastic body. A ballast for a discharge lamp as described in Scope 1. 3. The ballast for a discharge lamp according to claim 1, wherein the ballast for a discharge lamp is provided with a heat radiating member between the ballast main body and the mounting plate. 4. In a discharge lamp ballast in which a ballast main body, in which an iron core and a winding are combined and fastened to a base, is attached to a mounting plate via an elastic body for vibration isolation, a notch is provided in the mounting plate, and the notch is A mounting piece is provided on the base corresponding to the above, and this mounting piece is bent and locked to the notch via the vibration isolating elastic body, and a stopper provided on the base and a mounting plate opposite thereto. A ballast for a discharge lamp, characterized in that a gap with an end of the elastic body for vibration isolating is smaller than a thickness of a side edge of the vibration-proofing elastic body protruding from the mounting piece.