JPH03190189A - Control panel device - Google Patents

Abstract

PURPOSE:To prevent a control panel from deviating in the direction of axial thrust by a method wherein the metal part of the control panel is electrically connected to the holder of a casing through the intermediary of an elastic metal contact piece, and the two elastic metal contact pieces are so constituted as to enable an energizing force to act uniformly on supporting points in the opposite directions respectively. CONSTITUTION:An elastic metal contact piece 14 located between a supported part 12 and a holder 6 is so constituted that the height of its bent part 14a is set larger than a gap between the supported part 12 and the holder 6 when the bent part 14a stays in a free state. Therefore, the bent 14a of the elastic metal content piece 14 is kept always in elastic contact with the holder 6, so that an electrical connection can be ensured. The two elastic metal contact pieces 14 in elastic contact with the holders 6 give thrusts opposed in direction to the control panel 10 respectively through their reactions. The energizing forces given to the control panel 10 are so set as to be laterally equal to each other, in result the control panel 10 is held always at a center position, and a left space A between a left side panel 3 and the control panel 10 and a right space A between a right side panel 3 and the control panel 10 can be made equal to each other.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention is applicable to various household electric appliances such as AV equipment, or various types of ○A type appliances, which can be opened and closed at appropriate locations on the electric appliance. The present invention relates to an operation panel device that is installed in a certain manner, and more specifically, to an operation panel device that ensures reliable positioning of the operation panel in the shaft support thrust direction (direction along the shaft support line) and ground connection for electrostatic countermeasures.

[Prior Art] This type of operation panel generally has a structure in which both ends are pivotally supported by the casing of the main body of the electrical equipment, but no consideration has been given to the positioning of the shaft parts in the thrust direction. often not.

On the other hand, the display board attached to the operation panel may be made of metal, or metal foil may be attached to the operation panel, and the metal part of the operation panel may be electrically connected (grounded) to the main body of the electrical equipment.
Although it is desirable to take measures against static electricity, a connection structure using lead wires is usually used in order to maintain stable conduction between the rotatable operation panel and the main body of the electrical device at all times.

In addition, a structure in which a metal spring is used to bias members that require connection in one direction to achieve electrical continuity is disclosed in Japanese Utility Model Application Publication No. 54-120622 and Japanese Utility Model Application Publication No. 61-1265.
This is known as a battery connection structure as seen in Publication No. 65 and the like.

[Problems to be Solved by the Invention] As described above, in the conventional operation panel support structure, no consideration is given to the positioning of the shaft portion in the thrust direction, so that the operation panel may shift in the above-mentioned thrust direction. As a result, the gap between the body and the casing is large on one side and almost non-existent on the other, which is not only undesirable in terms of design (appearance), but also causes ``squeaks'' in areas where there is no gap, significantly impairing the operability of opening and closing. There was a problem of deterioration. A support structure is also known in which the central part of the operation panel and the casing of the main body are engaged with each other in a concave and convex manner to position the operation panel in the shaft support thrust direction, but due to the design requirements of the operation panel, the convex and convex engagement is not possible. In many cases, it is not possible to provide a mating portion, and if a concavo-convex engaging portion is provided, there is a problem in that the workability of engaging and assembling the two shaft supports becomes poor.

In addition, as mentioned above, it is desirable to have a stable electrical connection (grounding) of the metal part provided on the rotatable operation panel to the main body of the electrical equipment and to take measures against static electricity. If such a connection method using lead wires is adopted, the workability of connection is poor and the assembly work is complicated. Furthermore, if a single metal spring is used to bias the operation panel in one direction to establish electrical continuity, as seen in the earlier application, the operation panel will always be biased to one side in the thrust direction of the shaft support, resulting in the problem described above. A problem arises.

The present invention has been made in view of the above points, and its purpose is to enable a stable electrical connection between a metal part provided on a rotatable operation panel and the main body of an electrical device at all times. Another object of the present invention is to provide an operation panel device in which the operation panel does not shift in the shaft support thrust direction.

[Means for Solving the Problems] The above-mentioned object of the present invention is to provide an operation panel device installed at an appropriate location of an electrical device so as to be openable and closable, in which both ends of the operation panel, the main body of which is made of synthetic resin, are provided. a pair of fulcrum portions provided on each side, a pair of shaft supports provided on the casing side of the electrical equipment that respectively engages with the fulcrum portions and rotatably holds the fulcrum portions, and both the fulcrum portions; a pair of elastic metal contact pieces installed on the operation panel so as to be located near the respective portions of the operation panel and electrically connected to the metal portion of the operation panel, such that both elastic metal contact pieces are in elastic contact with each other; a pair of metal holder parts provided on the casing side of the electric device, and the metal part of the operation panel is electrically connected to the holder part on the casing side via the elastic metal contact piece. In addition, the above 2
The two elastic metal contact pieces are configured to apply equal biasing forces in opposite directions to the fulcrum.

[Function] The electrostatic countermeasure metal plate or metal foil attached to the operation panel is electrically connected to the elastic metal contacts installed on both sides of the operation panel, and the pair of elastic metal contacts By making elastic contact with the metal holder part provided on the casing side of the electrical equipment, the metal part of the operation panel is attached to the holder part via the elastic metal contact piece, regardless of the rotational position of the operation panel. electrical continuity is ensured.

In addition, the two elastic metal contact pieces press against the holder part with equal force in opposite directions, and as a result, equal biasing forces in opposite directions act on the fulcrum part of the operation panel, and the operation panel It is possible to maintain the desired center position without shifting in the shaft support thrust direction.

[Example] The present invention will be explained below with reference to an example shown in FIGS. 1 to 3. 1st UgJ is a front view of the main parts of the electrical equipment when the operation panel is in the open state, Fig. 2 is a perspective view of the main parts of the operation panel, and Fig. 3 is a main part of the electrical equipment when the operation panel is in the open state. FIG.

In the figure, the reference numeral 1 generally indicates an electrical device (for example, a VTR), and 2 and 3 indicate a front panel and a side panel that form part of the casing. Reference numeral 10 denotes an operation panel that opens or closes a part of the front panel 2, and in the open state shown in the figure, the operation buttons 4, display section 5, etc. provided on the front panel 2 are exposed. . Reference numeral 6 denotes holder portions made of conductive metal plates, which are provided at the back of the front panel 2, close to the front panel 2, and in pairs on both sides. Reference numeral 7 designates holding shafts fixed to each of the holder parts 6, which are engaged with and supported by shaft holes of supported parts of an operation panel 10, which will be described later. Although not shown, the holder portion 6 is grounded to the main chassis inside the electrical device.

Reference numeral 10 denotes an operation panel whose main part is made of synthetic resin, and a display plate 11 made of a conductive metal thin plate (for example, an aluminum plate with a thickness of 0.3 to 0.4 mm) is fixed to the back side of the operation panel. and forms part of the operation panel. On the display board 11, an operation guide, etc. that the user sees when opening the operation panel 10 is written, and the display board 11
is made of a metal plate, as described above, to prevent malfunctions caused by static electricity, and is connected to ground to the holder portion 6 of the electrical equipment 1 (on the main body side of the electrical equipment 1), as described later. Reference numeral 12 denotes supported parts that are integrally formed on both ends of the operation panel 10 to protrude, and are connected to the holder part 6.
A shaft hole (fulcrum portion) 13 is provided with which the holding shaft 7 is engaged.

Reference numeral 14 denotes an elastic metal contact piece made of a conductive metal spring plate, which is erected on the outside of the supported part 12 in close proximity to the supported part 12, and has a substantially "<" mark on its free end side. A square-shaped bent portion 14a is formed, and a through hole 14b through which the holding shaft 7 is inserted is bored in the bent portion 14a.

The base end of the elastic metal contact piece 14 is fixedly held on the operation panel 10 and is electrically connected to the display panel 11 via a metal frame (not shown) built into the operation panel 10.

In the assembled state, the shaft holes 13 of the supported parts 12 are rotatably engaged with the holding shafts 7 of the pair of holder parts 6, so that the operation panel IO can be rotated in the direction of the arrow in FIG. It is movable and can selectively take an open position shown by a solid line in the figure and a closed position shown by a two-dot chain line. In addition, the supported part 12 and the holder part 6
The elastic metal contact piece 14, which is located between The bent portion 14a of 14 is always in elastic contact with the holder portion 6 to ensure reliable electrical continuity. Therefore, the metal display plate 11 is grounded to the main chassis of the electrical equipment l through contact and conduction between the elastic metal contact piece 14 and the holder part 6, and thus reliable electrostatic countermeasures can be taken. Become.

Further, as shown in FIG. 1, the two elastic metal contact pieces 14, 14 that are in elastic contact with the holder parts 6, 6, respectively, apply forces when pressed in opposite directions to the operation panel 10 due to the reaction. . Further, the biasing force applied to the operation panel 10 at this time is set to be equal on the left and right sides, and as a result, the movement of the operation panel 10 in the pivot thrust direction is restricted, and the operation panel 10 is always held at the center position. , the distance A between the side panels 3, 3 and the operation panel 10 can be made equal on both the left and right sides. Therefore, not only does it have a good appearance, but there is no risk of "squeaks" occurring and deteriorating the operability of opening and closing as in the conventional case.

Furthermore, in the case where the operation panel 10 is present over almost the entire width of the front surface of the electrical equipment 1 as in this embodiment, the display board 11 is connected to the electrical equipment 1 via the elastic metal contact pieces 14 on the left and right sides of the operation panel 10. Since they are each connected to the ground on the main body side, they have excellent electrical performance.

Although the present invention has been described above with reference to the illustrated embodiments, those skilled in the art can make various modifications without departing from the spirit of the present invention. For example, if the operation panel 10 does not require the display board 11, A metal foil such as aluminum foil may be attached to the operation panel 10 as a countermeasure against static electricity, and a connection structure between the metal part of the operation panel 10 for static electricity countermeasures and the elastic metal contact piece 14 may be modified. In addition, the shape, attachment, structure, etc. of the elastic metal contact piece 14 can be changed as desired.

[Effects of the Invention] As described above, according to the present invention, the metal part provided on the rotatable operation panel can be electrically stably connected to the main body of the electrical equipment at all times, and the operation panel An operation panel device that does not shift in the shaft support thrust direction can be provided with a simple structure, and is of great value in this type of operation panel device.

[Brief explanation of drawings]

The drawings all relate to an operation panel device according to an embodiment of the present invention; FIG. 1 is a front view of the main parts of the electrical equipment when the operation panel is in an open state, FIG. 2 is a perspective view of the main parts of the operation panel, FIG. 3 is a side view of the main parts of the electrical equipment when the operation panel is in an open state. l...Electrical equipment, 2...Front panel, 3...Side panel, 6...Holder section, 7...Holding shaft, 10...
・Operation panel, 11...- Metal display board, 12
...Supported part, 13...Shaft hole, 14.
...Elastic metal contact piece, 14a...Bent part. Figure 1 Figure 3 Figure 2

Claims (3)

[Claims] 1. In an operation panel device installed at an appropriate location of an electrical device so as to be openable and closable, an operation panel whose main body is made of synthetic resin has a pair of fulcrums provided at both ends thereof, and both fulcrums. a pair of shaft supports provided on the casing side of the electrical equipment that respectively engage with and rotatably hold the electrical equipment; A pair of elastic metal contact pieces electrically connected to a metal part of the operation panel, and a pair of metal holders provided on the casing side of the electrical equipment so that the elastic metal contact pieces are in elastic contact with each other. The metal part of the operation panel is electrically connected to the holder part on the casing side via the elastic metal contact piece, and the two elastic metal contact pieces are each opposite to the fulcrum part. An operation panel device characterized in that biasing force is applied in an even direction. 2. 2. The operation panel device according to claim 1, wherein the metal portion of the operation panel is a metal plate or metal foil attached to the operation panel to prevent static electricity. 3. 2. The operation panel device according to claim 1, wherein the pivot support is provided in the holder portion.