JPH01133109A - Base unit for programmable controller - Google Patents

Abstract

PURPOSE:To surely couple a base unit with a module unit in normal posture and to prevent a connector pin from being damaged by forming guides for guiding the module unit on the upper and lower front edges of the base unit. CONSTITUTION:A pair of guides 12 are extended in the forward direction rectangularly from the upper and lower front edges of the base unit 1 and their tip parts are bent to the outside to form tongue chips 12a, 12a. When the base unit 1 constituted by said procedure is inserted into the module unit 7 with inclination, the front edge of the module unit 7 is regulated by the guide 12 of the base unit 1 and the module unit 7 is guided by the guides 12, 12 and coupled with the base unit 1 in the normal posture. The constitution makes it possible to prevent the connector pin in the module unit 7 from being damaged.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a base unit of a programmable controller.

[Conventional technology]

Figure 3 shows a side view of the base unit and module unit of a conventional programmable controller.
In the figure, (1) is a base unit, and a printed circuit board (4) is attached to the base (2) via a spacer (3).
) are attached by screws (5). (6)
is a connector provided on the printed circuit board (4). (
7) is a module unit, in which a printed circuit board (9) is attached to a case (8) with screws (lO). (11) is a connector provided on the printed circuit board (9).

The programmable controller configured as above is
The connector (11) of the module unit (7) is electrically connected to the connector (6) of the base unit (1). At this time, the insertion posture of the module unit (7) into the base unit (1) is such that the module unit (7) is inserted into the base unit (1) as shown in FIG.
7) must be inserted in a parallel state.

[Problem that the invention seeks to solve]

Since the base unit and module unit of the conventional programmable controller are configured as described above, the module unit (7) to the base unit (1)
) is inserted, for example, in Figure 4(b).

As shown in (C), if the module unit (7) is inserted with the module unit (7) tilted upward or downward relative to the base unit (1), the connector (6) or (11) pin may be damaged. This invention was made to solve the above-mentioned problems, and its purpose is to obtain a base unit for a programmable controller in which a module unit can always be inserted into the base unit in a normal position. shall be.

[Means for solving problems]

In the base unit according to the present invention, right-angled guides extend from the upper and lower front edges of the base unit, and an outwardly bent curled portion is provided at the tip of the guide.

[Effect]

In this invention, by providing the guides on the upper and lower edges of the base unit, even if the module unit to be inserted into the base unit is tilted, the front edge of the module unit is guided by the guides. It is possible to correct the posture to normal.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings. 1st
The figure shows a side view of the base unit and module unit of the programmable controller according to the present invention, and the symbols (1) to (11) are the same as in the conventional example shown in FIG. 3, so their explanation will be omitted. . (12) are a pair of guides extending forward (to the right) at right angles from the upper and lower front edges of the base unit (1), and both guides (12), (
The tip of 12) is a tongue piece (12a) that curls outward.
(12a) is formed. Please note that the above guide (12
), (12) width is module unit (7)
In case (8), the width and road distance are -.

The base unit configured as above is shown in Figure 2(a).
Even if you try to insert the module unit (7) at an angle with respect to the base unit (1) as shown in
The front edge of the module unit (7) is the base unit (
As shown in Fig. 2(b), the upper and lower edges of the module unit (7) are regulated by the guides (12) of 1).
12) and (12), and then when the module unit (7) is pushed in, the unit (A) is guided by the guides (12) and (12),
Insert the base unit (1) with the module unit in its normal position.
) can be combined with

In addition, by forming outwardly curved tongue pieces (12a), (12a) at the tips of the guides (12), (12), the module unit (7) can be guided smoothly and easily into the guide (12). You can definitely do it.

〔Effect of the invention〕

As explained above, according to the present invention, by providing guides for guiding the module unit on the upper and lower front edges of the base unit, the module unit can be reliably connected to the base unit in a normal posture. This prevents damage to the connector pins of the base unit or module unit.

[Brief explanation of the drawing]

FIG. 1 is a side view of the base unit and module unit of a programmable controller according to an embodiment of the present invention, FIGS. 2(a) and (b) are explanatory diagrams of the state in which the module unit is inserted into the base unit, and FIG. 3 4 is a side view of a conventional base unit and a module unit, and FIGS. 4(a) to 4(c) are explanatory diagrams showing examples of insertion postures of the module unit into the conventional base unit. (1)... Base unit, (4)... Printed circuit board, (6)... Connector, (7)... Module unit, (9)... Printed circuit board, (11)... Connector, (12)...Guide, (12a)...
... Tongue piece. Note that the same reference numerals in the figures indicate the same or equivalent parts.

Claims (1)

[Claims] In a programmable controller that connects the connector of the module unit to the connector of the base unit, there are guides on the top and bottom front edges of the base unit that guide the top and bottom front edges of the module unit, and a guide that guides the top and bottom front edges of the module unit. A base unit of a programmable controller characterized by having a tongue piece bent in a direction.