JPS60100386A - Device for electrically connecting circuit component - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a circuit structure in which connection terminals are formed in a row, such as an electro-optical display unit (for example, a liquid crystal panel) or a printed circuit board (for example, a flexible circuit board). The present invention relates to a circuit component connection device that electrically connects connection terminals of components.

Conventional Technology As a connecting device that electrically connects two printed circuit boards and makes it easy to remove them, the connecting terminals of both printed circuit boards are faced to each other, the side boards are pressed and clamped from the outside, and the connecting terminals are connected to each other. Conventionally, devices have been known in which devices are mechanically directly pressed into contact with each other, or devices in which an elastic conductive connector in which an elastic conductor layer and an elastic insulator layer are laminated are interposed between both printed circuit boards.

As the circuit configuration of electronic devices becomes more complex, the number of circuit components such as printed circuit boards and liquid crystal panels used in electronic devices increases, and there are cases where it is desired to connect a large number of these components at once, for example, three. In this case, it is conceivable to connect this double-sided printed circuit board directly to the second and lower printed circuit boards, respectively, or to connect it to the upper and lower printed circuit boards through elastic conductive connectors, respectively.

However, in both cases, the two connection parts are pressed and clamped in a vertically overlapping state, so as described below, each connection is There is a conceivable disadvantage that the connection state of the parts becomes even more uneven and the probability of poor contact increases.

In other words, in the case of direct pressure welding, three printed circuit boards are directly pressed together, so if the thickness of each printed circuit board varies or the flatness in the direction of the connection terminal row is poor, there may be gaps or connection parts with weak pressing force. In addition, if the thickness of each printed circuit board varies or the flatness in the direction of the terminal row is poor, a uniform force may be applied to the elastic conductive connector in the direction of the terminal row. As the two elastic conductive connectors are overlapped, the uneven pressing force as described above increases.Furthermore, the contact resistance against the pressing force varies between each elastic conductive connector, making the upper and lower connections more difficult. The contact resistance at each part is different, and as a result, the contact resistance at each connection part via the elastic conductive connector fluctuates greatly.In this way, if the conventional device is simply made into a two-layer structure, the contact condition will be poor. (I can't say it's practical.

Problems to be Solved by the Invention The present invention seeks to provide a connection device that can reliably electrically connect three circuit components with a simple configuration.

Means for Solving the Problems The present invention forms connecting terminal rows on the surfaces of three circuit components so that electrical connections are made between the surfaces facing each other in a superimposed state. In addition, an elastic conductive connector is inserted between one of the circuit components, and the other circuit components are brought into direct contact, so that both ends of the three circuit components are pressed.

According to the present invention, one circuit component is electrically connected via the elastic conductive connector by the compression, and the other circuit component is electrically connected via the elastic conductive connector.
They are directly pressed together by elastic force and electrically connected.

Embodiment FIG. 1 is a diagram showing an embodiment of a connecting device according to the present invention. In the figure, (10) is a well-known elastic conductive connector, which includes an elastic conductor layer (11) made of a rubber member mixed with a conductive material (for example, fine carbon powder) and an elastic insulator layer (12) made of an insulating rubber member. ) is formed as an integral piece of laminated structure. (13) or 15)? This is a printed circuit board as the third circuit component, for example, a flexible board made of HiJ flexible film. These are (14), (,15
), (13) are stacked from the bottom. Connecting terminal rows (16) and (17) are formed on the lower surface of the first substrate (13) and the upper surface of the third substrate (15) so as to face each other, respectively. Further, a conductive connector (10) is inserted between these boards. Third board (1
5) has wiring patterns printed on both sides, and the third
Connecting terminal rows (18) are provided on the lower surface of the substrate (15) and on the two surfaces of the second substrate (14) so as to face each other.
and (19) are formed. In addition, the connection terminal row (
The arrangement pitch of the terminals 18) and (19) does not need to be the same as the arrangement pitch of the connection terminal rows (16) and (17). In addition, each of these boards and conductive connectors are
In the assembled state, each connection terminal row and the conductive connector are positioned by appropriate means so as to overlap each other.

In the above configuration, electrical connections will be described when each printed circuit board and conductive connector are compressed from one side by a compression mechanism (not shown).

First, by pressing the conductive connector (1o), the first substrate (13) is connected via the elastic conductor layer (11).
Connection terminal row (16) on the bottom surface (!: 3rd board (15)
The connecting terminal row (17) on the upper surface of the terminal is electrically connected to the connecting terminal row (17).

In addition, the biasing force of the conductive connector (1o) due to -Jxr:self4)1.month' is applied to the connection terminal row (18) on the bottom surface of the third board (+5) or the top surface of the second board (I4). It is sufficiently pressed against the connection terminal row (]9) and electrically connected by surface contact. Here, since this 1r contact is made by the adhesive force of the conductive connector (1O), approximately equal contact pressure is applied to each connection terminal, and there is almost no risk of contact failure.

FIG. 2 shows an example in which a conductive connector is constructed by connecting conductive units having different cross-sectional shapes in the horizontal direction. In the same figure (A+), the conductive connector (91) is
It consists of a first conductive unit (92) and a second conductive unit (93) formed by changing the cross-sectional shape in a plane perpendicular to the lamination direction so as to have a different thickness, or an insulating member. (94) is attached in between. @1 conductive corni soto (92 n)
The difference t between the thickness of the second conductive unit (93) and the second conductive unit (93) is set to be the same as or slightly more precise than the thickness of the second substrate (96). This thickness t is preferably the same as the thickness of the second board (96), but since the conductive connector (9J) itself is made of an elastic material, it can be implemented even if it is slightly smaller than the thickness of the second board. It is possible. (95) is the first substrate, and (97) is the third substrate. Although the connection patterns printed on each board are omitted in the figure, they are arranged as follows. Zunaicchi 1st board (95)
A connection pattern consisting of a large number of connection terminal rows is printed on the second side, and some of the connection terminal rows are connected to the second board (96
), and the other connection terminal rows are exposed at a position facing the second conductive unit (93) that is not covered by the second substrate (96).

In addition, the second board (96) has a connection pattern printed on both the front and back sides, and the connection terminal row arranged on the back side extends directly below the second board (96). It is printed on the board (95) at a position corresponding to some of the connection terminal rows mentioned above, and the connection terminal row printed on the surface is the first conductive unit of the conductive connector) (92
) is located opposite the Furthermore, the connection pattern arranged on the bottom surface of the third board (97) is such that the connection terminals are arranged in two rows in a jig-to-knob pattern as described above, and one row is the first row of conductive connectors. Conductive unit (92
), and the other row is arranged at such a position that it can come into contact with the second conductive unit (93).

Figure (+3) shows the state of connection between this conductive connector and each board. In the assembled state, the above-mentioned parts 4N are screwed together on the plywood (98), and the holding plate (!) 9), it is compressed from one side.

The holding plate (99) is attached to each i' by appropriate means as described above.
While positioning fl 4I 5, it is fixed to the plywood (98).

In this state, as in the previously described embodiments, the connection terminals of the first and third boards (95) (97N1) are connected to each other by the second conductive unit (93) of the conductive connector.
Also, the second and third board (96) (97 double connection terminals) are connected by the first...q electric unit (92).In addition, according to this embodiment, the first board (95) Electrical connection between the first and second boards is also achieved by direct contact between the connection terminals of : and the connection terminals on the back of the second board (96).In this case, the n11 presser plate (99) Since the elastic conductive connector is pressed, the second board (96)
receives the biasing force from this conductive connector and the first board (
95) is sufficiently pressed. Therefore, although the first substrate and the second substrate are connected by direct contact, there is almost no possibility that a contact failure will occur due to the elastic force of the conductive connector.

FIG. 3 shows a plurality of conductive units connected in a stepwise manner.
- This shows an example of forming conductive connectors.
In the same figure, (14]) and (142) are the first and second conductive units having the above-mentioned laminated structure, and these units are connected directly with an insulating adhesive or As shown in the figure, an elastic insulation sheet (14
3) It is integrated by pasting. (144) is the first
The board (145) is a second board, and on the upper surface of each board, a connection pattern (146) and a second connection pattern (147) are printed, and each of the connection terminals (1, 4 (5al) ) ~ (] '16an, ) and (E7al) ~ (], 47an) are in contact with the first conductive unit (2+) and the second conductive unit (142) i
It is placed in a position where it can be used. (1,48) is the third board, (17I9) is the fourth board, and a connection pattern is printed on the bottom surface of each, and each of their connection terminals (L48a+) to (148an) and (14
9ax) to (14an) are disposed at positions facing the connection terminals of the first and second substrates. In addition, the surfaces of the first and second substrates that are in contact with II,
And the third and fourth boards that are in contact with each other are printed with connection patterns (none of which are shown) that face each other, as shown in the figure. In the combined state, the opposing connection patterns are in contact with each other.The I and fourth substrates (144) and (149) are flexible substrates made of an i+J' visual material, respectively. The second and third substrates (145) (148) are rigid substrates.

In the second configuration, when the parts are stacked on top of each other in the order shown in the figure and fixed by sandwiching them between the I-dos and the holding members (not shown), the first conductive unit (141)
The substrate (14, 4) and the third substrate (148) are electrically connected, and the second conductive unit (142)
As in the previous embodiments, the substrate (145) and the fourth substrate (], 49) are electrically connected to each other. Further, the first electric power unit (1, 41) uses its elastic force to move the third substrate (148) to the fourth substrate (14).
9) Since it is pressed J-, the connection patterns printed on the opposing surfaces of these sub-boards are directly connected to each other with sufficient contact pressure. Similarly, the second conductive unit (14
2) causes the second substrate (145) to move against the first substrate (
144), the connection patterns printed on their opposing surfaces are reliably connected to each other.

Effects of the Invention As described above, according to the present invention, when three circuit components are overlapped and electrically connected, an elastic conductive connector is inserted between one of the circuit components, and the elastic The conductive connector not only functions as an intermediary member that connects the circuit components of one of the circuit components, but also functions as a suppressor that directly connects the circuit components of the other circuit by pressure contact. The circuit components are reliably connected by the elastic conductive connector, and approximately equal contact pressure is applied to each connecting end between the other circuit components due to the elastic force of the elastic conductive connector, preventing poor contact. Most of my fears disappear.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an overlapping state of one embodiment of the present invention, FIG. 2 is a perspective view and a sectional view showing another embodiment of the present invention, and FIG. It is a perspective view showing an example. 13.97. ．． 149...first circuit component, 14.
．． 95°144...Second circuit component, 15,96,
145・Third circuit component, 10,92,142...
Elastic conductive connector, 16-Ith connection terminal row, 19
... second connection terminal row, 17 ... third connection terminal row, 18 ... fourth connection terminal row. Applicant: Minolta Camera Co., Ltd. Figure 1 m-+- Figure 2 (A> ・”) Figure 2 (B) Continued from page 1 @ Inventor Jun Yoko - Inventor Yasuo Nakanishi @ Inventor Tetsuya Ishizu @ Inventor Oyoko 1) Shigeru @ Invention Archeology and Artisan Meiso 2-3 Azuchi-cho, Higashi-ku, Osaka Osaka Kokusai Building Minolta Camera Co., Ltd. 2-3 Azuchi-cho, Higashi-ku, Osaka Osaka Kokusai Building Misuruta Camera Co., Ltd. Higashi, Osaka 2-3 Azuchi-cho, Osaka Kokusai Building Minolta Camera Co., Ltd. 2-3 Azuchi-cho, Higashi-ku, Osaka Osaka Kokusai Building Minolta Camera Co., Ltd. 2-3 Azuchi-cho, Higashi-ku, Osaka Osaka Kokusai Building Minolta Camera Co., Ltd. Inside the company

Claims (1)

[Claims] 1. A first circuit component in which a first row of connection terminals P is formed on the lower surface, a second circuit component in which a second row of connection terminals is formed on the fx surface, and the first circuit component described above. A third circuit in which a fourth connection terminal row opposite to the second connection terminal row is formed on the top surface of the third connection terminal row facing the connection terminal row; It consists of a component and an elastic conductive connector formed into a columnar or long plate shape and having conductive layers and insulating layers alternately laminated in the longitudinal direction of the elastic conductive connector.
The first circuit component 2, the elastic conductive connector, the third and second circuit components, and the circuit components are stacked in this order so that the fourth connection terminal row and the conductor layer row of the elastic conductive connector overlap downwardly. 2. A circuit component connection device in which first and second circuit components are pressed and clamped from the outside.