JPS60220580A - Conductively connecting method - 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] [Industrial application field] The present invention! ± Inkshiendo recording head and hybrid, 1
・It relates to a method of connecting a large number of contacts iT and contacts I:T in an IO and a small device.

[Prior art]

Conventional ink side recording head, No\Iburi 21,
IC Nato Elementary School) 414. Many contact points in the block 1
When connecting 1, soldering or wire ponting was used. FIG. 1 shows an example of the connection of an ink side recording head.

One end of each of a large number of arranged piezo elements 1 is used as a contact point 2. When electrically connecting the contact group 3 and another contact group 6 in which each end of a large number of circuits 4 serves as a contact 5, conventionally, a thin conductive copper wire 7, gold wire, or aluminum wire is used. Each corresponding contact must be soldered or welded using a wire pad, and piezo elements that are difficult to solder,
Conductive adhesives were used to adhere to conductive ceramics, etc. However, such methods have many drawbacks. Wire bonding is difficult to bond because there is a large step difference between the contact groups, and it is also difficult to bond to piezo elements, conductive ceramics, resin, etc. Furthermore, the gold wire used is expensive, easily breaks, and has poor workability.

Next, methods using soldering and conductive adhesive require skill and poor workability because the part shape is minute, and 1rli wire,
This type of wiring method not only tends to cause hang (-J connection failure, heat damage, incorrect contact of adjacent contacts, etc.), but also chemical deterioration during use. Therefore, the wire may break when assembling and adjusting other parts in the block.
Since the wiring within the block is integrated, even a partial disconnection will result in the entire block being defective.

[Object 1 of the Invention] The present invention has been made in order to solve the drawbacks of the conventional electrical connection method between contact groups and contact groups as described above.
Effective for joining in small blocks such as recording hends, the structure is simple, the number of parts is small, and workability is improved.
The aim is to also improve reliability.

(Structure of the Invention) In order to achieve the above object, in a method for electrically connecting contact groups, a contact consisting of a plurality of conductive elastic parts is used to connect these together. The present invention provides a connection method characterized in that by fixing a connector made of an insulating holder, a contact made of a conductive elastic part is crimped onto a contact point.

For example, a group of contacts in a small block such as a group of piezo elements for inkjet recording 71 and a group of contacts each having one end of a large number of circuits on a flexible board as input/output of electric signals are connected. In this case, the above-mentioned drawbacks are substantially solved by making electrical connection using a connector consisting of a group of elastic contacts and an insulating maintenance body.

〔Example〕

An embodiment of the present invention will be described. FIG. 2 is a perspective view of the present invention, and FIG. 3 is a side view thereof. For parts with the same structure as in Figure 1, we asked for the name of the same province.

One end of the piezo element is designated as a contact 2, a contact group 3 constituted by a large number of piezo elements, and one end of each of a large number of circuits on a flexible substrate 8 are designated as contacts 5. The contact group 6 is electrically connected by a connector 9. Therefore, this connector 9 has elasticity corresponding to the number of contacts described above, and is composed of a contact 11 having a contact 10 at its end, and an insulating holder 12 that holds these. Several screw holes 1
It has 3.

To connect each contact IO of the contact group 3 to the contact 2 of the contact group 3 and each contact 5 of the other contact group 6 using the elasticity of the contact J/11 of the connector, connect the contact IO to the corresponding contact group 3. .6
Electrical connection is made by crimping the contacts 2 and 5 of the . For this purpose, the connector 9), E & I 5-
, L, place the insulating holder 12 of the connector on the number board 1G, and using the number board screw holes 13, connect the connector 9 so that the corresponding contacts are crimped to each other by the adhesive strength of the contacts 11. The whole is screwed onto the board 15.

The insulating holder 12 is made of electrically insulating material such as plastic, acrylic, or phenolic resin, and
(i ki (7 < 4 ka rya < , Ill katy alurin j'r g)i, periliu l-tTPv, and the contact part, that is, the contact point 10, is made of gold or ≦II
! It is effective to knock the parts in order to prevent electrical contact. Also, as shown in Fig. 4, an interrupt 17 is inserted at the rear end to allow multiple contacts in the 'Kf direction of the corresponding contact, but as shown in Fig. 5, depending on the entire block or the shape of the contact, two contacts - filA , 1 corresponding to 11B
Providing a plurality of contacts in the length direction of the contact 2 to be connected to one contact 2 also has the effect of improving the contact.

Furthermore, as shown in FIG. 6, as an application of the present invention, it can be used to connect not only two contact groups but also a large number of contact groups.

The contact 11, which describes an example of the connector assembly method and contact processing method of the present invention, is manufactured by etching or pressing the pattern, arranging the contacts, and using the insulating material described in 2. The connector can be assembled into one piece by molding. Further, as shown in Fig. 7, the insulating holder I2 is divided into two insulators 12A and 12B, which are molded to match the arrangement of the contacts 1], and the contacts 11 are sandwiched between the insulators +2AI2B. It can be manufactured by shaping M■ in the same way and heat welding it, or fixing it with caulking or screws. Furthermore, holes corresponding to the respective contacts are made in the molded insulating holder, each contact is inserted and arranged through the holes, and then the insulating holder 12 is heat welded to fix the contacts. It can be manufactured by assembling.

Furthermore, if necessary, after assembly, the desired connector can be manufactured by press bending and press bending of the contacts.

〔Effect of the invention〕

This type of pneumatic connection using the spring elasticity of the connector connector can provide a stable connection over a long period of time if the spring elasticity is appropriate, and since it utilizes elasticity, it is mechanically resistant to vibration street shocks. The tamping effect works to maintain electrical contact, and there is no deterioration during use such as hanging, and it can also be connected to materials that are difficult to weld or hang, such as piezo elements and conductive ceramics. Particularly when used in the Infusiera i recording head, the piezo element will not be damaged and it can also meet the demands for miniaturization.

In the present invention, the connections between the contact groups are made using connectors, which makes it easy to separate the individual parts and prevents damage such as disconnection when assembling and adjusting other parts within the block. Since the connections are connected at once, the connection can be changed simply by replacing the connectors, improving work efficiency and reliability.This connection method also reduces cost I/down.

[Brief explanation of the drawing]

Fig. i1 is a schematic diagram showing wire connections in an inkjet recording head, Fig. 2 is a perspective view showing a connection method using a connector of the present invention, and Fig. 3 is a side view thereof. FIG. 4 and FIG. 5 show that a plurality of contacts are used in the present invention. bN 6 u shows a connection between multiple contact groups as an example of the application of the present invention. FIG. 7 is a diagram showing an example of the structure and assembly method of the connector of the present invention. 9...Connector 10...Contact +1. IIA, IIB・・・Contactor +2, +
2A, 12B... Insulating body agent Patent attorney Yoshichika Noda Figure 2 Figure 3 Figure 4 Figure 5

Claims (1)

[Claims] In the method of electrically connecting the contact box and the contact 411, by fixing a connector consisting of a plurality of four-electrode elastic members and an insulating holder that connects them, - A conductive connection method characterized in that a contact made of a conductive elastic part is pressed into contact with a contact point A1.