JP2522782Y2 - Front structure of control equipment - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a front structure of a control device.

[0002]

2. Description of the Related Art Some equalizers have a front portion as shown in FIG. 4, for example. In this embodiment, a box-shaped front member 51 that opens rearward is provided upright at the front of the equalizer, and a window 53 is formed in a front wall 52 of the front member 51. Wall 52
Further, a plurality of knobs 54 located below the window 53 and arranged in the left-right direction are integrally formed via hinges 55 which are elastically deformed.

On the rear surface of the front wall 52 of the front member 51,
A front printed circuit board 57 having a planar shape in the front-rear direction is mounted, and a display device 58 located behind the window 53 of the front member 51 on the front surface of the front printed circuit board 57.
Are provided via a holder 59, and a plurality of tact switches 60, which are pressed by the knob 54, are provided side by side below the display device 58 on the front surface of the front printed circuit board 57.

When the knob 54 is pressed, a rearward force acts on the portion of the front member 51 between the window 53 and the hinge 55. Therefore, in order to increase the strength in the rear direction, a contact pin 62 that projects rearward and contacts the front printed circuit board 57 is formed integrally with the above-described portion.

However, since a large number of components are provided on the front surface of the front printed circuit board 57, it is necessary to arrange the contact pins 62 avoiding the above components. Therefore, a large number of contact pins 62 cannot be arranged in the left-right direction, and can be arranged only at a limited number of places.

For this reason, the strength of the front member 51 between the window 53 and the hinge 55 in the rear direction is weak, so that when the knob 54 is pressed, the adjacent knob 54 also moves rearward, and The corresponding tact switch 60 may malfunction.

Further, in the above-mentioned conventional art, the front member 5
When looking under the display device 58 from the window 53 of the first device, there is no shielding member on the front surface of the front printed circuit board 57 that shields the lower portion of the display device 58. There is also a problem that parts below the display device 58 can be seen. An object of the present invention is to provide a structure of a front part of a control device that can solve the above problem.

[0008]

Means for Solving the Problems In order to achieve the above object, the present invention is characterized in that a front part of a control device is provided.
The front member is erected, and a window is formed on the front wall of the front member. On the front wall of the front member, a plurality of knobs located below the window and arranged in the left-right direction are respectively elastic. Via a deformable hinge, a printed circuit board that is integrally formed and attached to the rear surface of the front wall of the front member and that has a planar shape in the front-rear direction is attached,
A display device located behind the window of the front member is provided via a holder, and a plurality of switches pressed by a knob are arranged in the left-right direction below the display device on the front surface of the printed circuit board. Reinforcing ribs projecting rearward and exhibiting a planar shape in the vertical direction are integrally formed between the window and the hinge of the front member, and the holder projects downward from the printed circuit board in a state of being separated from the printed circuit board in a forward direction and reinforced. The point is that a reinforcing base that abuts on the front surface with the rib is formed.

A positioning pin projecting rearward may be integrally formed with the reinforcing rib, and a positioning hole may be formed in the holder for inserting the positioning pin and positioning the printed circuit board with respect to the front member.

[0010]

The reinforcing rib of the front member is brought into contact with the front surface of the reinforcing base of the holder to increase the strength in the rear direction between the window and the hinge of the front member. There is no fear that the knob will move backward.

Further, since the reinforcing rib having a planar shape in the vertical direction in the front member is in contact with the reinforcing base of the holder below the display device, the user can look down the display device from the window of the front member. At this time, the parts below the display device on the front printed circuit board are shielded by the reinforcing ribs,
The above parts are not visible. In addition, since the reinforcing base is spaced forward from the printed circuit board, components on the printed circuit board do not hinder the arrangement of the reinforcing ribs and the reinforcing base.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is applied to an equalizer will be described below with reference to FIGS. Reference numeral 1 denotes a chassis, which is disposed at the bottom of the equalizer. The chassis 1 has a main printed circuit board 2 located above the chassis 1.

Reference numeral 4 denotes a front member, which is detachably attached to the front of the chassis 1 or the like, and is provided upright at the front of the equalizer. The front member 4 is integrally formed of a hard synthetic resin, and has a front wall 5, a top wall 6 projecting rearward from an upper end of the front wall 5, and a rearward projection projecting from a lower end of the front wall 5. A bottom wall 7, a pair of left and right side walls (not shown) projecting rearward from left and right ends of the front wall 5, a mounting pin 8,
It comprises a reinforcing rib 9, a positioning pin 10, a knob 11, and the like.

At a portion extending from the upper part of the front wall 5 to the center in the vertical direction, a horizontally long rectangular window portion 13 is formed which is located substantially at the center portion of the front wall 5 in the left and right direction.
Are closed by a transparent plate 14. In the lower part of the front wall 5, a knob opening 15 is formed adjacent to the window 13 below and being longer than the window 13.

The mounting pins 8 project rearward from several places on the front wall 5. The reinforcing rib 9 is provided to project rearward from a portion extending over substantially the entire length of the upper opening edge of the knob opening 15, and has a planar shape in the vertical direction. Positioning pin 10
Is projected rearward from a substantially central portion in the left-right direction of the reinforcing rib 9.

A plurality of knobs 11 are pressed and operated.
From the lower surface of the reinforcing rib 9, a pair of left and right hinges 17 are provided, respectively, and an operation pin 18 is provided rearward from a rear surface of the knob 11. The hinge 17 includes a thick portion 19 fixed to the reinforcing rib 9, and the thick portion 19 and the knob 11.
The thin portion 20 is elastically deformed when the knob 11 is operated.

Reference numeral 22 denotes a front printed circuit board, which has a planar shape in the front-rear direction, is included in the front member 4, and is attached to the mounting pin 8 of the front member 4 by a screw 23. Reference numeral 25 denotes a holder, which is attached to a portion extending from the upper portion of the front surface of the front printed circuit board 22 to the center in the vertical direction. The holder 25 is integrally formed of a synthetic resin, and has a front wall 26 that is spaced forward from the front printed circuit board 22, and a ceiling that projects forward and rearward from the upper end of the front wall 26 and that contacts the front printed circuit board 22. A wall 27, a bottom wall 28 projecting rearward from a lower end of the front wall 26 and abutting on the front printed circuit board 22, a pair of positioning pins 29 and mounting claws 30 for a pair of right and left, a left and right reinforcing base 31, 32 etc.

The positioning pins 29 and the mounting claws 30 project rearward from the left and right sides of the front wall 26, and when the holder 25 is mounted on the front printed circuit board 22, the positioning pins 29 are moved forward. Positioning hole 34 of printed circuit board 22
, The holder 25 is positioned with respect to the front printed board 22. Each of the mounting claws 30 is inserted into the mounting hole 35 of the front printed circuit board 22 through elastic deformation, whereby the holder 25 is mounted and fixed to the front printed circuit board 22.

The left reinforcing base 31 projects downward from the left side of the lower end of the front wall 26, and the right reinforcing base 32 projects downward from the left-right center and the right side of the lower end of the front wall 26. , Away from the front printed circuit board 22. The left and right reinforcement bases 31 and 32 are spaced apart from the front printed circuit board 22 in the front, and are in contact with the reinforcement ribs 9 of the front member 4 on the front surface. Left and right reinforcement bases 31, 32
In addition, a triangular reinforcing rib 37 having a planar shape in the left-right direction is disposed between the bottom walls 28. A horizontally long positioning hole 38 is formed in a portion of the right reinforcing base 32 which is located substantially at the center of the holder 25 in the left-right direction.
The positioning pin 1 of the front member 4 is inserted into the positioning hole 38.
By inserting “0”, the front printed circuit board 22 is positioned with respect to the front member 4 when the front printed circuit board 22 is attached to the front member 4.

A rectangular reinforcing rib 39 is also provided between the front wall 26 and the bottom wall 28 at the same position as the reinforcing rib 37 in the left-right direction. Reference numeral 40 denotes a display device, which has a horizontally long rectangular shape when viewed from the front, is constituted by a display tube or the like for displaying sound pressure in each frequency band, and is attached to the front wall 26 of the holder 25.

Reference numeral 42 denotes a tact switch, which is a plurality of side-by-side left and right front surfaces of the front printed circuit board 22, which are located below the holder 25 and the display device 40, and which are pressed by the operation pins 18 of the knobs 11. Operated.

A large number of components other than the holder 25 and the tact switch 42 are provided on the front surface of the front printed circuit board 22. A decorative plate 44 is provided on the chassis 1, the front member 4, and the like.

According to the embodiment configured as described above, the reinforcing ribs 9 of the front member 4 are brought into contact with the front surfaces of the left and right reinforcing bases 31 and 32 of the holder 25, so that the front member 4
The strength between the window 13 and the hinge 17 in the rear direction is large, so that when the knob 11 is pressed, the adjacent knob 11 does not move backward, and the tact switch corresponding to the adjacent knob 11 There is no fear that the 42 malfunctions.

The reinforcing ribs 9 having a planar shape in the vertical direction of the front member 4 are in contact with the left and right reinforcing bases 31 and 32 of the holder 25 below the display device 40. When looking under the display device 40 from the window portion 13 of the display device 40, the components of the front printed circuit board 22 below the display device 40 are shielded by the reinforcing ribs 9 and the above components are not visible.

Also, since the left and right reinforcing bases 31 and 32 are separated from the front printed circuit board 22 in a forward direction, the components on the front printed circuit board 22 include the reinforcing rib 9 and the left and right reinforcing bases 31 and 32. There is no hindrance to the arrangement. still,
In the embodiment, the present invention is applied to an equalizer, but the present invention is applicable to an audio device and other various control devices.

[0026]

[Effect of the Invention] As described in detail above, according to the present invention,
When pressing the knob of the front member, the adjacent knob moves rearward, there is no fear that the switch corresponding to the adjacent knob will malfunction, and when looking below the display device from the window of the front member. In addition, components on the printed circuit board below the display device are shielded by the reinforcing ribs, so that the components are not visible. In addition, since the reinforcing base is spaced forward from the printed circuit board, components on the printed circuit board do not hinder the arrangement of the reinforcing ribs and the reinforcing base. According to the second aspect, the printed circuit board can be reliably positioned on the front member.

[Brief description of the drawings]

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

FIG. 2 is a view taken along the line AA of FIG. 1;

FIG. 3 is a sectional view taken along line BB of FIG. 1;

FIG. 4 is a longitudinal sectional view showing an example of the related art.

[Explanation of symbols]

 4 Front Member 5 Front Wall 9 Reinforcement Rib 10 Positioning Pin 11 Knob 13 Window 17 Hinge 22 Front Printed Circuit Board 25 Holder 31 Left Reinforcement Base 32 Right Reinforcement Base 38 Positioning Hole 40 Display Device 42 Tact Switch

Claims (2)

(57) [Scope of request for utility model registration] A front member is provided upright at a front portion of the control device, and a window is formed on a front wall of the front member. A plurality of knobs arranged in parallel with each other are integrally formed via elastically deformable hinges, and a printed circuit board having a planar shape in the front-rear direction is attached to the rear surface of the front wall of the front member, On the front side, a display device located behind the window of the front member is provided via a holder, and a plurality of switches pressed by a knob are arranged in the left and right direction below the display device on the front surface of the printed circuit board. A reinforcing rib protruding rearward and presenting a planar shape in the vertical direction is integrally formed between the window and the hinge in the front member, and is separated from the printed circuit board by the holder in a forward direction. A reinforcement base projecting downward from the display device in a state where the reinforcement base is in contact with the reinforcement rib at a front surface thereof. 2. The reinforcing rib is formed integrally with a positioning pin projecting rearward, and a holder is provided with a positioning hole through which the positioning pin is inserted to position the printed circuit board with respect to the front member. The structure of the front of the control equipment.