JP3273618B2 - Neon transformer - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the mounting of components (such as bushings and connectors) for neon transformers.

[0002]

2. Description of the Related Art As shown in FIG. 7, a conventional neon transformer includes a transformer main body 41 in a main body case 40, and a secondary bushing 42, a primary connector 46 and the like above the transformer main body 41. Is provided. To attach these members, first, the transformer body 41 is gripped by hand and stored in the case 40. Then, after attaching the bushing 42 in which the secondary lead wire 44 is inserted to the secondary-side bushing attachment plate 43,
The secondary-side bushing mounting plate 43 is fitted to a fixing bracket 45 provided on the inner peripheral surface of the case 40. Next, the transformer body 4
After connecting a primary lead wire (not shown) 1 to a terminal 49 provided in the connector 46, a gap between the inside of the case 40 and each member is filled with an insulating material 47, and the connector 46 is immediately fitted into the insulating material 47. Then, the locking protrusion 48 protruding from the connector 46 is locked to the case 40 so that the connector 46
Is fixed.

[0003] Further, although not shown, the grounding of the transformer main body 41 is performed after the transformer main body 41 is housed in the case 40, and an earth wire previously connected to the transformer main body 41 is connected to the case 40. This was done by providing a ground terminal.

[0004]

However, when the transformer main body 41 is stored, the transformer main body 41 is too heavy to be gripped by hand, and the transformer main body 41 has a shape that is difficult to grip. There was a problem of dropping or injuring the worker. The bushing 42 and the connector 4
In the mounting of No. 6, there is a problem that workability is poor because work in a narrow area in the case 40 is forced. Furthermore, since the primary lead wire is connected to the terminal 49 of the connector 46 outside the case 40 at the time of this operation, it is necessary to provide an extra primary lead wire, which causes a problem that the cost increases.

Further, since the transformer main body 41 is grounded via the case 40, there is a problem that the grounding is not reliable. An object of the present invention is to provide a readily neon transformer the transformer body can retract and be Rukoto.

[0006]

In order to solve the above-mentioned problems, the present invention is characterized in that a fixing bracket is directly attached to an iron core of a neon transformer and a handle is attached to the fixing bracket. it is to shall to the subject matter.

[0007]

According to the first aspect of the present invention, a fixing bracket is directly attached to the iron core of the neon transformer, and the fixing bracket is attached to the fixing bracket.
Easy to grip the transformer body by attaching the handle
Can be stored in the main body case.

[0008]

[0009]

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments embodying the present invention will be described below with reference to FIGS.
It will be described according to. As shown in FIGS. 1 to 3, the transformer main body 2 of the neon transformer N is provided with a single-phase tripod core 3 (hereinafter, simply referred to as an iron core) formed of a silicon steel plate. The secondary coil 4 is the support core 3
a. This secondary coil 4 is, for example, 1
The secondary coil bobbin 5 is divided into ten parts by one partition plate 5a to 5k, and the secondary coils 6a to 6j wound around the secondary coil bobbin 5. The lead wire 7a led from the secondary coil 6j is connected to a terminal 8 provided below the secondary coil bobbin 5. The terminal 8 is connected to the secondary lead wire 7. Although not shown, the other secondary lead wires 7 are similarly connected to the secondary coil 6a. A pair of U-shaped insulating plates 10 are provided between the iron core 3 and the secondary coil bobbin 5 to cover the same. A primary coil 11 is inserted and supported at a lower portion thereof through a gap G. That is, the primary coil 11 is composed of a primary coil bobbin 12 and a primary coil 13 wound around the primary coil bobbin 12. Input leads 14a and 14b are led out to the primary coil 13, and lead wires 16a and 16b are led from a second primary coil described later. A pair of insulating spacers 17 for insulating the primary coil 11 and the secondary coil 4 are inserted and arranged in the gap G, and a pair of leakage cores 18 are provided between the insulating spacer 17 and the primary coil bobbin 12. Inserted and placed. A fixing bracket 20 for mounting the bushing 19 and the like is fixed to the upper part of the iron core 3 of the transformer main body 2 configured as described above with screws.

Next, the details of the fixing bracket 20 will be described. As shown in FIGS. 1 and 4, the fixing bracket 20 includes a substrate 21 having a rectangular shape corresponding to the shape of the upper end surface of the iron core 3. A fixed side plate 22 for fixing the substrate 21 to the substrate 3 is formed so as to hang down and bend, and a part of the substrate 21 is protruded from an end face in the width direction. In addition,
A screw insertion hole 22a is formed through each of the fixed side plates 22,
A corresponding screw fixing hole 3b is formed in the iron core 3 so that the fixing bracket 20 can be screwed.

A support plate 23 is formed on one end surface of the substrate 21 in the width direction toward the upper part of the transformer body 2 so as to be bent.
One end of the support plate 23 and one end of a bushing attachment plate 24 for attaching the bushing 19 are attached so as to intersect the longitudinal direction of the substrate 21. The bushing mounting plate 24 has a rectangular shape in which each corner is cut off, and has two bushing mounting holes 24a penetrating therethrough, and a longitudinally-engaging power factor improving capacitor 33 to be described later. Is formed with a concave recess 24b. As shown in FIGS. 5A and 5B, the mounting structure of the bushing 19 includes a pair of locking projections 19a protruding below the bushing 19 and a locking guide groove 24c formed in a part of the bushing mounting hole 24a. Consists of

As shown in FIGS. 1 and 4, a connector support plate 26 for supporting the connector 25 is formed on the other end surface in the width direction of the substrate 21 in the same manner as the support plate. I have. The connector support plate 26 has a fitting projection 26a formed at the center of the end thereof, so as to fit into a fitting groove 25a formed in the connector 25 shown in FIG.

A pair of L-shaped handle mounting plates 28 for mounting the handles 27 in the width direction are attached to both center side surfaces 21a of the substrate 21. A handle mounting hole 28a is formed in the upper portion of the handle mounting plate 28. A ground terminal 32 is formed at one end of the handle mounting plate 28 by bending inward. In addition, 2
Reference numeral 8b denotes a case mounting hole which is provided through the handle mounting plate 28 and connects the fixing bracket 20 and the main body case 1.

In this manner, the fixing bracket 20 is
A fixed side plate 22, a support plate 23, a bushing mounting plate 24, a connector support plate 26, a handle mounting plate 28,
And a ground terminal. The locking recess 24b of the bushing mounting plate 24 has a power factor improving capacitor 3
The locking projection 33c protruding from the upper end of the upper surface 3 is locked,
A power factor improving capacitor 33 is mounted on the substrate 21. Note that lead wires 33a and 33b are led out to the power factor improving capacitor 33.

The connector 25 has a fitting recess 25d formed at the lower portion thereof so as to be fitted to the power factor improving capacitor 33. Connection terminals 25b and 25c are provided inside the connector 25, and the primary lead wires 14a and 14c are provided.
b is connected. (See FIG. 2) Further, a bolt insertion hole 27a is provided at a lower portion of the U-shaped handle 27.
A bolt 30 is inserted into the bolt insertion hole 27a and the grip mounting hole 28a of the grip mounting plate 28 via a washer 29, and is tightened by a nut 31, so that the grip 27 can rotate. I have.

Then, as shown in FIG.
The transformer main body 2 and the like are housed therein, and are filled with insulating particles 34 such as silica sand as an insulating material and a resin 35 such as epoxy. Next, an electric circuit of the neon transformer N including the power factor improving capacitor 33 is shown in FIG. The input lead wire 14a of the primary coil 13 and the lead wire 16b of the second primary coil 15 are connected, and the lead wire 33a of the power factor improving capacitor 33 is connected to the primary coil 13a.
Input lead wire 14b and the other lead wire 33b
Is connected to the lead wire 16a of the coil 15 on the second primary side. (See FIG. 2) A voltage of about 350 V is applied to the power factor improving capacitor 33 by the primary coil 13 and the second primary coil 15, and the connection terminals of the input leads 14a and 14b are connected. Has 100
A voltage of V is applied. Thus, the current I becomes
Since I = ωCV ² , the power factor improving capacitor 33 having a small capacity can be used.

Therefore, when a voltage of 100 V is applied to the connection terminals of the input lead wires 14a and 14b, the secondary coils 6a to 6j are excited via the primary coil 13 and the iron core 3, and are output from the output lead wire 7. A predetermined voltage (for example, 15K
V) is output, and the neon tube connected to the output lead wire 7 is turned on. Next, attachment of each component such as the fixing bracket 20 and the bushing 19 to the transformer main body 2 of the neon transformer N configured as described above will be described.

The fixing bracket 20 is placed on the upper end face of the transformer main body 2, and the screw insertion hole 22a of the fixed side plate 22 and the screw fixing hole 3b of the iron core 3 are aligned and screwed at four places. Next, the secondary lead wires 7 are inserted through the bushing mounting holes 24 a of the bushing mounting plate 24, respectively, and further through the bushing 19. Then, the bushing 19 is connected to the bushing mounting hole 2.
4a, the locking projection 19a is inserted through the locking guide groove 24c, and the bushing 19 is rotated in an arbitrary direction. Then, the bushing 19 is locked to the bushing mounting plate 24.

Thereafter, the connection terminals 25b of the connector 25,
The input lead wires 14a and 14b are connected to the input lead wires 25c, and the power factor improving capacitor 33 is fitted into the fitting recess 25d of the connector 25, and the lead wire 33a of the power factor improving capacitor 33 is connected to the connection terminal 25c. Let it.
The other lead wire 33b is connected to the lead wire 16a of the coil 15 on the second primary side. Then, the power factor improving capacitor 33 is placed on the substrate 21 in a state where these are integrated,
The locking projection 32c of the power factor improving capacitor 33 is fitted into the locking recess 24b of the bushing mounting plate 24, and the fitting groove 25a of the connector 25 is fitted into the fitting projection 26a of the connector support plate 26.

Then, the handle 27 is attached to the handle mounting plate 28. As described above, in the neon transformer N of the present embodiment, as shown in FIG. 1, the bushing 19 and the connector 25 are mounted outside the main body case 1 by directly attaching the fixing bracket 20 to the transformer main body 2. Workability is improved. Further, when connecting the input lead wires 14a, 14b (primary lead wires) to the connection terminals 25b, 25c of the connector 46, it is possible to work outside the main body case, so that it is not necessary to provide extra input lead wires 14a, 14b, which leads to cost reduction. Reduction can be achieved.

Further, a handle mounting plate 28 is
By attaching the handle 27 to the handle mounting plate 28, the transformer 27 can be carried by holding the handle 27, and can be easily stored in the main body case 1. Further, a ground terminal 32 is provided on the handle mounting plate 28 of the fixing bracket 20 directly attached to the transformer main body 2, and the fixing bracket 20 and the main body case 1 are connected by the handle mounting plate 28, thereby grounding the entire transformer. Can be performed reliably.

The present invention is not limited to the above embodiment. For example, in the above embodiment, the power factor improving capacitor 33 is mounted on the fixing bracket 20.
May be mounted below the main body case 1. In addition, the fixing bracket 20 is formed integrally so that each component can be attached, but is separately formed as the fixing bracket 20 that can be attached to each component.
You may make it attach to the transformer main body 2 directly.

[0024]

According to the neon transformer of the present invention as described in detail above, according to the present invention, as well as directly attached to the core of the transformer main body fixing bracket, by which enables attaching the fixing bracket two bunch hand, easily a transformer body exhibits an excellent effect that it will retract to Rukoto the body case.

[Brief description of the drawings]

FIG. 1 is a perspective view illustrating an appearance of a neon transformer main body according to the present embodiment.

FIG. 2 is a top view showing the appearance of the neon transformer.

FIG. 3 is a sectional view showing the inside of the neon transformer.

FIG. 4 is an exploded perspective view showing a fixture and components of the neon transformer.

FIG. 5 is a view showing a bushing mounting structure of the neon transformer to a fixture.

FIG. 6 is an electric circuit diagram of the neon transformer.

FIG. 7 is a cross-sectional view showing the inside of a conventional neon transformer.

[Explanation of symbols]

1 body case, 2 transformer body, 3 iron core, 19 bushing, 20 fixing bracket, 25 connector, 27 handle, 32 ground terminal, N neon transformer.

──────────────────────────────────────────────────続 き Continuation of the front page (56) References Japanese Utility Model Showa 53-148222 (JP, U) Japanese Utility Model Showa 61-190118 (JP, U) Japanese Utility Model Showa 56-123531 (JP, U) Japanese Utility Model Hei 4 28417 (JP, U) Jiko 44-27561 (JP, Y1) (58) Fields investigated (Int. Cl. ⁷ , DB name) H01F 27/06, 30/00

Claims (1)

(57) [Claims] 1. A neon transformer, wherein a fixing bracket is directly attached to an iron core of the neon transformer, and a handle is attached to the fixing bracket .