JPH043227Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a housing-type instrument for various electronic devices such as a controller, and in particular, a chassis is provided inside the outer casing so that it can be inserted and removed freely, and a chassis is provided in a part of the outer casing. The present invention relates to a housing-type instrument that is connected by an electric wiring cable between an outer housing side connection part connected to wiring and a chassis side connection part provided in a part of the chassis.

This type of instrument, especially a panel-embedded instrument in which a large number of instruments are mounted on a rack-type panel, has a chassis with a display panel on the front that is removably inserted into the open-front outer case. The operation dial, etc. provided on the front display panel allows necessary operations to be performed and information to be displayed, and if necessary, the chassis can be pulled out from the outer casing by a predetermined distance to operate an operation switch, etc. formed on the front side of the chassis. Instruments are used in which adjustments are made using an adjustment section, and the chassis can be completely pulled out from the outer casing to perform various operations.

However, in conventional meters of this type, there is a problem in the processing of the electrical wiring cable between the connection part on the outer casing side, which is connected to external wiring, and the connection part on the chassis side. Measures have been taken such as folding and storing the long belt cable in the inner bottom or inner back space between the chassis and the outer casing, or attaching a bending member to bend the long belt cable in a zigzag shape. Ta.

However, with this conventional structure, it is necessary to provide extra space within the outer casing to accommodate the wiring, which not only increases the size of the instrument, but also requires special parts, making it more susceptible to noise, and furthermore, There were various problems such as difficulty in inserting and removing the chassis.

The present invention was developed in view of the above points, and the length of the electrical wiring cable between the outer casing and the chassis is shortened, and the length of the electrical wiring cable between the outer casing and the chassis is shortened so that it does not interfere with the operation of inserting and removing the chassis. The purpose of this invention is to provide this type of housing-type instrument.

That is, in the housing-type instrument of the present invention, a slide connector to which a connecting end of an electric wiring cable connecting an outer housing and a chassis is attached is joined to a connecting part of the chassis so that it can be freely inserted and removed in the direction of insertion and removal of the chassis, On the other hand, a stopper is provided on the inner surface of the outer casing, which abuts a part of the slide connector at a predetermined pull-out position of the chassis to separate the slide connector from the chassis.

Next, the present invention will be explained based on an embodiment shown in the drawings. 1 to 10 show a first embodiment of a housing-type instrument according to the present invention, which is designed as a housing-type instrument for various electronic devices such as controllers. This housing-type instrument is generally composed of an open-front outer housing 1 having an opening 2 on the front surface, and a chassis 3 housed within the outer housing 1 so as to be freely insertable and removable through the front opening 2.

The chassis 3 includes a front panel unit 5 in the form of a rectangular thick plate, the outer periphery of the back of which comes into contact with the outer periphery flange 4 of the front opening 2 of the outer casing 1 when inserted into the outer casing 1; Upper and lower guide frames 6a and 6b are projected parallel to the top and bottom of the rear surface of the unit 5 and slidably contact the upper and lower inner wall surfaces of the outer casing 1, and a plurality of front panel guide frames 6a and 6b are projected parallel to the left and right from the rear surface of the unit 5. It consists of a board (two in the figure) or one (described later) plastic printed wiring board, the upper and lower edges of which are inserted and held in the holding grooves 7 formed on the opposing surfaces of the upper and lower guide frames 6a and 6b. circuit board 8
It is formed by

The front panel unit 5 forming the chassis 3 has an operating section such as an operating dial and a display section for displaying information on its front surface.

In addition, upper and lower guide frames 6 forming the chassis 3
a and 6b are vertically symmetrical uneven thick plates molded from plastic, and their upper and lower outer surfaces are as follows.
It serves as a sliding surface that comes into contact with the upper and lower inner wall surfaces of the outer casing 1. As shown in FIGS. 4 to 6, the upper and lower guide frames 6a and 6b of this embodiment have two symmetrical guide frame pieces 9 and 9 each having a rough cross section. One or more of the opposing longitudinal edges are connected by a small block 10 formed by a runner during plastic molding, and are located at symmetrical positions on the inner surface of each guide frame piece 9, 9. The holding grooves 7 are formed which communicate with each other in the longitudinal direction. Also, the upper and lower guide frames 6
Window holes 11 are formed at one or more locations (three locations in the figure) on each of the plate surfaces of a and 6b at symmetrical locations of each guide frame 9, and the locations where the window holes 11 are formed are Opposite edges of each guide frame piece 9, 9 are recessed to form an intermediate window hole 12. This intermediate window hole 12
The part of the holding groove 7 between the area where the window hole 11 is formed is a narrow holding groove part 7', and the part of the circuit board 8 inserted into this holding groove part 7' is inserted into the screw or spring pin 13. Upper and lower guide frame 6
It is bonded and fixed to a and 6b.

Further, as shown in FIGS. 7 to 9, the front end ears 14 of each guide frame piece 9, 9 are connected to a mounting piece 15 projecting upward and downward on the back of the front panel unit 5 by screws 16. Fixed.

Furthermore, a circuit board 8 forming the chassis 3
The center of the rear end edge which protrudes rearward from the rear end face of the upper and lower guide frames 6a, 6b is protruded in a convex shape to form a connector part 8a as a chassis side connection part forming an edge connector. Ori,
The front part of the circuit board 8 and the front panel unit 5 are as follows.
Front wiring cable 17 consisting of a short belt cable
electrically connected. The connector portion 8a may be formed by a separate connector that is detachably attached to the edge of the circuit board 8.

Between the upper and lower guide frames 6a and 6b at the front of at least one side of the circuit board 8, there are a large number of operation switches, check pins, etc., which overlap with the circuit board 8, as shown in FIGS. 1 to 3. An adjustment section 18 made of a metal plate having a diameter is provided.

In the inner part of the outer casing where the chassis 3 as described above is inserted, there are two connector members 8a of each of the two circuit boards 8 and the two connector members 8a of the chassis 3 which are press-fitted and removably inserted and removed in the direction of insertion and removal of the chassis 3. Slide connector 1
9 and 19 are provided. This slide connector 19 has the connector section 8 at the center of the front surface.
A slide connector main body 21 having a slit-shaped socket hole 20 for receiving the connector a, and a slide connector main body 21 that is fixedly installed above and below each of the slide connector main bodies 21, and that is slidable back and forth with its upper and lower surfaces touching the upper and lower surfaces of the inner wall of the outer casing 1. Moving upper and lower connector holders 22a, 22b
It is formed by The upper and lower connector holders 22a and 22b are molded from plastic, and the upper surface of the guide piece portion 23 protruding from the front end surface thereof has a forward direction on the extension line of each holding groove 7 of the upper and lower guide frames 6a and 6b. A guide groove 24 whose diameter is expanded into a funnel shape is formed in each of the guide grooves 24, and the upper and lower corners of the rear end edge of each circuit board 8 are fitted into each guide groove 24.

The slide connector 19 and the terminal board 25, which constitutes the back plate of the outer casing 1 and serves as an outer casing side connection portion to which external wiring is connected, are connected by a rear wiring cable 26 made of a short strip cable.

Guide plates 27 extending along the upper and lower outer surfaces of the slide connector 19 are formed on the left and right sides of the rear portion of the upper and lower surfaces of the outer casing 1, and the front ends of the left and right guide plates 27 are arranged at right angles facing inward. It is bent to form a stopper 28 of the slide connector 19.

However, as shown in FIG. 2, the longitudinal width A of the adjustment section 18, the longitudinal length of the rear wiring cable 26 when extended, and the length of the guide plate 27, that is, the rear end surface of the slide connector 19. The length from the most retracted position in the outer casing 1 in FIG. 1 to the point in FIG. 2 where the front end surface hits the stopper 28 and stops is approximately the same length A. .

Next, the operation of the housing type instrument will be explained.

First, in the normal operating position shown in FIG. 1 (FIG. 9, FIG. 10) in which the chassis 3 is completely pushed into the outer casing 1, the connector portion 8a serving as the chassis side connection portion is inserted into the outer casing 1. The slide connector 19 is press-fitted into the socket hole 20 of the slide connector 19, which is housed deep inside, and normal operation is performed. Next, it is shown in FIG. 2 (FIG. 7). At the adjustment operating position where the chassis 3 is pulled out from the outer casing 1 by width A, the chassis 3
The slide connector 19 joined to the connector portion 8a of
The rear electrical wiring lead 26 is fully extended. In this adjustment operation position, an adjustment check is performed using the operation switch, check pin, etc. of the adjustment section 18 exposed on the side surface of the outer casing 1 while continuing the normal operation based on the external signal.

Furthermore, the chassis 3 shown in FIG. 3 (FIG. 8)
In the pull-out operation position where the chassis 3 is pulled out from the outer casing 1 for maintenance, replacement, etc., the slide connector 19 hits the stopper 28 and its forward movement is blocked, so that the connector portion 8a of the chassis 3 is pulled out of the slide connector 19. The chassis 3 is pulled out from the socket hole 20 and separated, and the chassis 3 is pulled out from the outer casing 1 while leaving the electrical wiring cable 26 inside the outer casing 1. This allows work such as maintenance and replacement to be performed without any trouble. After this maintenance, replacement, etc. work is completed, when the chassis 3 is pushed into the outer casing 1, the connector part 8a of the chassis 3 is pushed into the socket hole 20 of the slide connector 19, and the chassis 3 and the electrical wiring cable 26 are connected. connection is made, and it can be moved directly to the normal operating position shown in FIG. 1 or the adjustment operating position shown in FIG. 2.

In this way, the length of the electrical wiring cable 26 is
A length A corresponding to the width of the adjustment portion 18 is sufficient;
Also, the above cable 26 when inserting and removing the chassis 3
The work of attaching and detaching the chassis 3 to and from the chassis 3 is also completed with a single touch operation of simply pushing or pulling out the chassis 3 into the outer casing 1.

FIGS. 11 and 12 show a second embodiment of the housing-type instrument according to the present invention.

The housing-type instrument according to the second embodiment uses one circuit board 8 as the chassis 3, and therefore:
The upper and lower guide frames 6a and 6b of this circuit board 8 are also
It consists of a single guide frame piece with a single holding groove 7 formed on the opposing surface, and the other configurations and functions are the same as those of the first embodiment, so the same parts are used in corresponding places. Reference numerals are given and detailed explanations thereof are omitted.

The upper and lower guide frames 6a and 6b constituting the housing-type instrument according to the second embodiment are made of the two symmetrical guide frame pieces 9 and 9 used in the first embodiment.
The small block 10 serving as the molding runner is removed to separate the parts, which are used as upper and lower guide frames.

According to the shape of the upper and lower guide frames 6a, 6b made of the two guide frame pieces 9, 9, one molding die can be used for chassis using the two circuit boards of the first embodiment. 1 of the second embodiment and the guide frame of the second embodiment.
There is an advantage that both the guide frame for the chassis using a single circuit board can be molded.

As explained above, according to the housing type instrument of the present invention, there is no need for a wiring cable made of a long strip cable as in the past, so there is no need for wasted space due to the routing of the cable or special bending members. Since this method does not require a meter, it can be made more economical, more compact, and less susceptible to noise, making it an excellent housing type meter for various electronic devices.

Furthermore, the wiring cable can be easily attached and detached with one touch when the chassis is inserted and removed, which has the effect of improving operability.

[Brief explanation of drawings]

1 to 10 show a housing-type instrument according to a first embodiment of the present invention, FIGS. 1 to 3 are longitudinal sectional views showing the same usage state, and FIG. 4 is a plan view of the chassis. Figure 5 is an inner view of the guide frame, and Figure 6 is
Enlarged cross-sectional view of the same guide frame along the - line, No. 7
Figures 9 to 9 are perspective views showing the state of use, Figure 10 is an enlarged cross-sectional view of the same, Figures 11 and 12 show a second embodiment of the present invention, and Figure 11 is a perspective view. , FIG. 12 is a plan view of the chassis. 1... Outer casing, 3... Chassis, 26... Electrical wiring cable, 19... Slide connector, 28
...stopper.

Claims (1)

[Scope of utility model registration request] In a case-type instrument that has a chassis that can be freely inserted and removed within the outer casing, an electrical wiring cable that has one end connected to a part of the outer casing and a connection that has the other end of this electrical wiring cable connected to the chassis. a slide connector which is connected so as to be able to be inserted and removed in the direction of insertion and removal of the chassis and is movable within the outer casing; A housing-shaped instrument comprising: a stopper that comes into contact with a portion of the slide connector to separate the chassis from the slide connector.