JPH0614452Y2 - Capacitor fixing device - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a capacitor fixing device such as an integrated amplifier.

[0002]

2. Description of the Related Art FIG. 7 to FIG.
As shown in FIG. 3, the chassis 41 includes an equipment plate 42 arranged at the bottom of the chassis 41, an outer side plate 43 erected on both outer sides of the equipment plate 42, and a partition between the outer side plates 43. It has a partition side plate 44 facing the side plate 43, a front structural body 45 and the like arranged in the left-right direction on the front part of the chassis 41.
A board 46 is provided between the lower portions of the outer side plate 43 and the partition side plate 44, and a pair of electrolytic capacitors 47, which are circular in plan view, are provided upright on the board 46.

A fixed body 48 is provided between the outer side plate 43 and the partition side plate 44, and the fixed body 48 holds the capacitor 4 therein.
An insertion hole 49 into which the upper part of 7 is inserted is formed. Before and after the central portion of the fixed body 48, the left and right ends are the fixed body 48.
A pair of front and rear bands 50 fixedly provided on each outer side of the band 50 are disposed, and the inner peripheral surface of each side of each of the bands 50 is attached to each insertion hole 4
It forms part of 9. A fastening portion 51 projecting upward is formed in the center portion of each band 50 in the left-right direction, and these fastening portions 51 are fastened by a screw 52 with a cross hole and a nut 53 arranged in the front-rear direction. , The bands 50 are tightened, and the upper portion of the capacitor 47 is fixed. In addition, the upper surface of the front structure 45 is higher than the position of the screw 52. Further, the equipment plate 42 is provided with a power transformer 54 located near the rear of the base 46, and the upper surface of the transformer 54 is also higher than the position of the screw 52.

[0004]

In the above-mentioned conventional example, the screw 52 is usually fastened from the front side of the chassis 41 by the driver 55. However, in the front part of the chassis 41, the screw 52 is higher than the screw 52. Front structure 4 protruding to the front
As shown in FIG. 7, the driver 55 is inclined at the time of the above fastening because the cross-shaped tip of the driver 55 does not securely engage with the cross hole of the head of the screw 52, and the screw 52 is fastened. There was a problem that it was difficult to do and the cross hole was easily crushed. Although it is conceivable to fasten the screw 52 from the rear,
Since the transformer 54 whose upper surface is higher than the position of the screw 52 is provided in the vicinity of the rear of the base 46, the inclination angle of the driver 55 becomes larger than in the above case, and the above problem becomes more remarkable.

Therefore, in order to solve this problem, it is conceivable to prepare a short special screwdriver that fits between the front structure 45 and the capacitor 47 and fasten the screw 52, but at the time of assembly, There is a new problem that it is inefficient to work with multiple types of drivers. Further, in the above-described conventional art, since the fastening portion 52 is formed in the upward protruding shape on each band 50 so that the screw 52 can be easily operated, each band can be tightened uniformly in the height direction. There is also a problem that the upper part of the condenser 47 cannot be fixed well. An object of the present invention is to provide a capacitor fixing device that solves all the above problems.

[0006]

In order to achieve the above object, a feature of the present invention is that a chassis in which a capacitor is erected inside has two side plates facing each other in the left-right direction. The mounting parts protruding in the chassis are cut and raised on both side plates, and the openings are formed in the cut and raised traces, and the fixed body provided between the both side plates is fixed to the mounting parts. An insertion hole through which the upper part of the capacitor is inserted and a band whose inner peripheral surface forms part of the insertion hole are formed in the fixed body, and a fastener for fixing the capacitor by tightening the band is inserted into the band. The fastener is inserted through the band in the left-right direction, the operating portion of the fastener is arranged at the same position as the opening of the side plate in a side view, and the opening allows the fastener to come from the outside of the side plate. At the point that was made the opening for operating It It should be noted that the fastener is inserted at a substantially vertical center of the band. In addition, a plurality of insertion holes may be arranged in the left-right direction, and a plurality of bands whose inner peripheral surface constitutes a part of each insertion hole may be tightened by a single fastener. Further, the condenser and the insertion hole may be circular in plan view.

[0007]

[Operation] When fixing the upper part of the capacitor to both side plates,
The fixed body is attached to each mounting portion of both side plates while inserting the upper portion of the capacitor into the insertion hole of the fixed body provided with the fastener. Next, insert a tool from the opening of the side plate, engage the tool with the fastener, by the tool on the extension axis of the fastener,
Tighten the fasteners and tighten the band to secure the top of the capacitor.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is applied to a pre-main amplifier will be described below with reference to the drawings of FIGS. In FIGS. 1 to 5, reference numeral 1 denotes a chassis, an equipment plate 2 located at the bottom of the chassis, a pair of left and right outer side plates 3 standing upright on each outer side of the equipment plate 2, and standing upright on the equipment plate 2. A partition side plate 4 that is provided to partition the outer side plate 3 and faces the outer side plate 3 in the left-right direction, and a box-shaped front portion configuration body 5 that is erected and located at the front part of the chassis 1 are provided. .

In the front part of the left side outer side plate 3 and the partition side plate 4, upper and lower parts thereof are cut and raised in a U-shape into the chassis 1 to form a pair of front and rear parts. -The lower mounting portions 8 and 9 are formed. Then, in the left outer side plate 3 and the partition side plate 4, a U-shaped opening 10 which is a cut and raised mark is formed below the upper attachment portion 8. Reference numeral 12 denotes a base, which is provided between the outer side plate 3 on the left side and the lower part of the partition side plate 4, and its four corners are used as fixing tools on the lower mounting portions 9 of the outer side plate 3 and the partition side plate 4 on the left side. It is detachably attached with the illustrated screw 13. The base 12 has a pair of left and right electrolytic capacitors 13 which are circular in plan view.
Is erected, and various other electronic components are provided.

Reference numeral 15 denotes a fixed body which is a plastic molded product and is provided between the outer side plate 3 on the left side and the upper part of the partition side plate 4 and has a hollow shape which opens downward. The right and left sides of the fixed body 15 are raised one step, and the four corners of the top plate are plate-shaped mounting portions 16. Each mounting portion 16 is an upper mounting portion of the left outer side plate 3 and partition side plate 4. 8 is mounted on the plate 8 and is detachably fixed by a screw 17 exemplified as a fixture. A pair of left and right openings 19 are formed through the fixed body 15 in the up-down direction, and a semicircular band 20 is provided in each opening 19, and each inner end of the front part thereof is provided. Is fixed to the front of the center of the fixed body 15 in the left-right direction so as to be swingable. The inner peripheral surface on the inner side of each opening 19 and each band 20
With the inner peripheral surface of, a circular insertion hole 21 through which the upper portion of each capacitor 13 is inserted and removed is formed.

Fastening portions 22 and 23 are respectively formed on the inner ends of the rear portions of the left and right bands 20 so as to project rearward.
The respective fastening portions 22 and 23 face the inner surface of the rear portion of each of the left and right openings 19 on the inner side through a small gap. The fastening portions 22 and 23 and the fastening portion 2 of the fixed body 15
A screw 24 is inserted into the portion sandwiched between the terminals 2 and 23 from the left side so as to be freely inserted and removed. The screw 24 is located in the fastening portions 22 and 23, that is, in the central portion or approximately the central portion of each band 20, in the vertical direction, and has a cross hole in its head. The right fastening portion 23 has an engaging portion 2 that opens upward and rightward.
6 is formed, and the nut 25 screwed into the screw 24 is engaged with the engaging portion 26 from above so that the nut 25 cannot rotate and cannot move to the left and right sides. Then, by fastening the screw 24 to the nut 25, each band 20 is tightened and the capacitor 13 is fixed.

The left and right side portions of the rear portion of the fixed body 15 are
A space 28 that allows the head or tip of the screw 24 to be visually recognized is formed from each of the outer sides thereof, and the head of the screw 24 and the opening 10 on the rear side of the left outer side plate 3 are viewed in a side view. At the same position, the screw 24 can be fastened by a driver 29 located on the extension axis of the screw 24 through the opening 10 and the space 28 on the left side. The front structure 5 projects above the capacitor 13. Further, the equipment plate 2 is provided with a power transformer 31 located near the rear portion of the base 12, and the transformer 31 projects above the capacitor 13.

According to the embodiment configured as described above, when the upper portion of the capacitor 13 provided on the base 12 is fixed to the left outer side plate 3 and the partition side plate 4, first, the right side fastening portion 23 is With the nut 25 engaged with the engaging portion 26, both the fastening portions 22 and 23 and the fastening portion 22 of the fixed body 15,
The screw 24 is inserted into the portion sandwiched by 23, and the screw 24 is lightly screwed into the nut 25. Next, while inserting the upper portions of the capacitors 13 into the insertion holes 21 of the fixed body 15, the mounting portions 16 of the fixed body 15 are inserted.
Is placed on each upper mounting portion 8 of the left outer side plate 3 and the partition side plate 4, and then fixed by the fasteners 17. Next, as shown in FIGS. 4 and 5, the driver 29 is inserted into the space 28 from the opening 10 on the rear side of the left outer side plate 3, and the cross-shaped tip of the driver 29 is attached to the head of the screw 24. The screw 24 is engaged with the cross hole, and the screw 24 is fastened to the nut 25 by the driver 29 located on the extension axis of the screw 24, and the bands 20 are tightened to fix the upper portions of the capacitors 13.

As described above, since the screw 24 can be operated by the driver 29 located on the extension axis of the screw 24, the cross-shaped tip of the driver 29 is securely engaged with the cross hole of the head of the screw 24. Therefore, the screw 24 can be easily fastened, and the cross hole is not easily crushed. Further, it is not necessary to prepare a short and special driver, and the work efficiency is not deteriorated. Further, since the screw 24 is operated by using the opening 10 which is the cut and raised mark of the upper mounting portion 8 of the outer side plate 3, the outer side plate 3 is specially processed differently from the conventional one. There is no need, and since the structure of the fixed body 15 is simple, there is no increase in cost. Further, the fastening portions 22 and 23 are formed in a rearward projecting shape at the inner end portions of the rear portions of the left and right bands 20, so that the screw 24 extends in the vertical direction and the fastening portions 22 and 23, that is, the respective bands 20.
Since the band 20 is located in the central portion or the substantially central portion, the respective bands 20 can be tightened uniformly in the height direction, and the upper portion of the capacitor 13 can be fixed well.

In the embodiment, the capacitor and the insertion hole are circular in plan view, but they may not be so. For example, they may be polygonal in plan view. Further, in the embodiment, the number of insertion holes and the number of bands are two, but the number may be one or three or more. Furthermore, in the embodiment, as a fastener for fastening each band,
I used screws and nuts, but other fasteners, for example,
Hexagon socket head cap bolts and nuts may be used.

[0016]

As described above, according to the present invention, since the fastener can be operated by the tool on the extension axis thereof, the tool can be securely engaged with the fastener, Can be easily fastened, and the tool operation part of the fastener is not crushed. Further, it is not necessary to prepare a short special tool, and the work efficiency is not lowered. Further, since the fastener is operated by utilizing the opening portion which is the cut-and-raised mark of the fixed body mounting portion of the side plate, it is not necessary to perform special processing different from the conventional one on the side plate 3, and the side plate 3 is fixed. Since the body structure is also simple, there is no increase in cost. Further, according to claim 2, the fastener is
Since the band is located substantially in the center, the band can be tightened uniformly in the height direction, and the upper part of the capacitor can be fixed well.

[Brief description of drawings]

FIG. 1 is a side view showing an embodiment of the present invention.

FIG. 2 is a plan view of the same.

3 is a cross-sectional view taken along the line AA of FIG.

FIG. 4 is a sectional view taken along the line BB of FIG.

5 is a cross-sectional view taken along the line CC of FIG.

FIG. 6 is a perspective view of a fixed body showing an embodiment of the present invention.

FIG. 7 is a vertical cross-sectional view showing a conventional example.

FIG. 8 is a plan view of the same.

FIG. 9 is a perspective view of the fixed body.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Chassis, 3 ... Outer side plate, 4 ... Compartment side plate, 8 ... Mounting part, 10 ... Opening part, 12 ... Board, 13 ... Capacitor, 1
5 ... Fixed body, 20 ... Band, 21 ... Insertion hole, 24 ... Screw, 25 ... Nut.

Claims (4)

[Scope of utility model registration request] 1. A chassis in which a capacitor is erected inside has two side plates facing each other in the left-right direction, and mounting parts projecting into the chassis are cut and raised on both side plates, and the cut parts are cut and raised. An opening is formed in the raised trace, and in the mounting part,
A fixed body provided between both side plates is fixed, and an insertion hole through which the upper part of the capacitor is inserted and a band whose inner peripheral surface forms a part of the insertion hole are formed in the fixed body. When the fastener for fixing the capacitor by tightening the band is inserted, the fastener is inserted in the band in the left-right direction, and the operation part of the fastener is arranged at the same position as the opening of the side plate in the side view. The capacitor fixing device is characterized in that the opening is an opening for operating the fastener from the outside of the side plate. 2. The capacitor fixing device according to claim 1, wherein the fastener is inserted through a substantially central portion in the vertical direction of the band. 3. A plurality of insertion holes are provided in the left-right direction, and a plurality of bands whose inner peripheral surface constitutes a part of each insertion hole are tightened by a single fastener. Capacitor fixing device. 4. The capacitor fixing device according to claim 1, wherein the capacitor and the insertion hole are circular in plan view.