JP3436503B2 - Pressure connector and unit including the same - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pressure contact connector which is used by being sandwiched between objects to be connected.

[0002]

2. Description of the Related Art There has been a remarkable spread of mobile phones (including so-called PHS) in recent years. At the same time, it is required to be smaller and thinner. On the other hand, conventionally, when connecting a microphone to a board or the like, a lead wire from the microphone is directly soldered to the board. However, it requires a build-up of solder and a space for arranging lead wires, which is not suitable for downsizing. Further, the number of man-hours for soldering is required, and the assembly is troublesome, which increases the manufacturing cost. Furthermore, it is difficult to automate the assembly because it involves soldering work.

On the other hand, there is one in which a microphone and a substrate are connected using a conductive rubber. However, a conductive rubber is relatively poor in elasticity and it is difficult to manufacture one having a high dimensional accuracy. Therefore, the contact pressure may be insufficient when the layout is small. In addition, conductive rubber is expensive. As described above, the problem that it is difficult to secure a sufficient contact pressure when the connection structure is downsized also exists in the connection between the speaker and the substrate.

An object of the present invention is to provide an inexpensive press-connecting connector which is small in size and capable of ensuring a sufficient contact pressure, and a unit including the same.

[0005]

As a means for solving the above problems, the aspect of the invention according to claim 1 is as follows.
A contact plate made of a leaf spring having first and second contacts protruding toward opposite sides, and a connector body defining an accommodation space for accommodating an intermediate portion between the both contacts are provided on upper and lower surfaces of the connector body. Each contact is exposed from the groove formed respectively, and the pressing force received from the corresponding connection object by the first and second contacts in a state of being sandwiched between the pair of connection objects is balanced with each other through the intermediate portion. to, thereby enabling floating in the pressing direction of each contact in the middle portion accommodating space of the contact plate <br/> Ah is, the contact plate is folded at one end of an elongated metal plate in a convex shape
Bending to form the first contact and the other end of the metal plate
Bend in a convex shape and project in the direction opposite to the first contact.
The second contact is formed, and further the first and second contacts are formed.
Form a main body that protrudes laterally in the middle of the point
And extends from the second contact in the opposite direction to the main body
The contact plate as a whole has a star shape.
However, the first and second contacts are generally in a plan view of the connector body.
Provided is an insulation displacement connector characterized by being arranged so as to overlap .

In this aspect, since the intermediate portion of the contact plate is free, the stroke amount of each contact when sandwiched between the pair of connection objects is the contact plate from the first contact to the second contact. Can absorb between overall heights. Therefore, it is possible to secure a sufficient contact pressure at each contact even with a thin type having a low height, and to achieve a substantial reduction in thickness. In addition, a laborious soldering work is unnecessary, and the manufacturing cost is low because the contact plate is housed in the housing space of the connector body.

According to a second aspect of the present invention, in the press-connecting connector according to the first aspect, the connector body has a disk shape, the contact plate includes inner and outer contact plates, and the inner contact plate. Each contact point is exposed from the inner groove relatively arranged near the center of the disk, and each contact of the outer contact plate is exposed from the outer groove relatively arranged near the outer circumference of the disk. is there.

In this aspect, when the concentric contacts are formed on the surface of the connection target, no matter which position the disk-shaped connector main body is in the circumferential direction with respect to the connection target, each contact corresponds to the corresponding contact. Can be contacted with. Therefore, the attachment to the connection target becomes very easy. According to a third aspect of the present invention, a disc-shaped connection target having a pair of inner and outer contacts arranged concentrically on the surface, the press-connecting connector according to claim 2 superposed on the connection target, and the press-connecting connector. And a resilient cover that integrally covers the peripheral surface of the connection target and fixes the two together.

In this embodiment, after the connection object and the press-connecting connector, which do not need to be aligned in the circumferential direction of each other, are superposed on each other, they can be easily unitized by covering them with the elastic cover, and the assembling work is very simple. is there. Further, since it is sufficient to set the unit on the board, the unit can be easily attached to the device.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be described with reference to the accompanying drawings. FIG. 1 is a partially broken exploded perspective view of a unit including a pressure contact connector and a microphone according to an embodiment of the present invention, FIG. 2 is a plan view of the pressure contact connector, and FIG. 3 is a bottom view of the pressure contact connector. . Also, FIG.
2 is a sectional view taken along line IV-IV in FIG. 2, and FIG.
It is sectional drawing which follows the -V line. Referring to FIG. 1, the press-connecting connector 1 is integrally connected to a microphone 2 for a mobile phone as a connection target by a tubular rubber elastic cover 3 to form a unit U.

The pressure contact connector 1 has an inner contact plate 9 and an outer contact plate 10 in a pair of accommodating spaces 7 and 8 defined by an upper case 5 and a lower case 6 of a disk-shaped connector body 4.
Are housed respectively. With reference to FIGS. 6A and 6B, and FIGS. 7A and 7B, the upper case 5 and the lower case 6 are each formed by molding a synthetic resin into a disc shape, and each of the discs is formed by a disc. Forming long inner grooves 5a, 6a passing through the center of the groove and long outer grooves 6a, 6b arranged parallel to the respective inner grooves 5a, 6a, as shown in FIGS. 1 and 2. , The inner contact plate 9 has inner grooves 5a, 6a
To expose the first and second contacts 11 and 12, respectively. Further, as shown in FIG. 3, the outer contact plate 10 exposes the first and second contacts 11 and 12 from the outer grooves 5b and 6b, respectively.

The inner contact plate 9 and the outer contact plate 10 are made common to each other. As shown in FIG. 4, one end of an elongated metal plate is bent in a convex shape to form the first contact 11, and at the same time, the metal plate is formed. The other end of is bent in a convex shape in the opposite direction to the first contact 11 to form the second contact 12. Also, the first
In the intermediate portion 13 between the contact 11 and the second contact 12, the main body 14 protruding laterally is formed, whereby the contact plates 9 and 10 as a whole are star-shaped. Has a shape that is lacking in part. As shown in FIGS. 2 and 4, reference numeral 15 is an extending piece continuous from the second contact 12.

5, 6 (a) and 6 (b) and FIG.
Referring to (a) and (b), the upper case 5 and the lower case 6
Are coupled by inserting the fitting protrusions 16, 17 and 18 projectingly formed on the lower surface serving as the mating surface of the upper case 5 into the fitting holes 19, 20 and 21 formed of through holes provided in the lower case 6. ing. The fitting protrusion 16 has a square cross section, and the corresponding fitting hole 19 has a circular cross section for inscribing the fitting protrusion 16. The fitting protrusion 17 has a substantially oval cross section, and has a rectangular cross section in which the corresponding fitting hole 20 and the fitting protrusion 17 are inscribed. The fitting protrusion 18 has a circular cross section, and the fitting hole 21 corresponding thereto has an elliptical cross section in which the fitting protrusion 18 is inscribed. Further, as shown in FIGS. 1, 3 and 7B, a plurality of step portions 22 are formed on the lower edge of the lower case 6 at the peripheral edge thereof.

As shown in FIG. 4, the housing space 7 for housing the intermediate portion 13 of the inner contact plate 9 is formed by the inner grooves 5a and 6a of the cases 5 and 6 in a state where the cases 5 and 6 are combined. It is partitioned. Although not shown in FIG. 4,
The outer contact plate 1 is formed by the outer grooves 5b and 6b of the cases 5 and 6, respectively.
An accommodation space 8 for accommodating the intermediate portion 13 of 0 is similarly partitioned. The inlet of each groove 5a, 5b, 6a, 6b is narrower than the inner side, so that the intermediate portion 13 of each of the contact plates 9, 10 housed therein does not come out from the corresponding housing space 7, 8. ing.

As shown in FIGS. 1, 2, 5 and 6 (a), the upper surface 5c of the upper case 5 is defined by a peripheral edge 5d to form a recess 5e into which the lower portion of the microphone 2 can be fitted. Has been done. As shown in FIG. 1, the lower surface 2 of the microphone 2
A pair of inner and outer contacts 2b and 2c are concentrically arranged on a. The inner contact plate 9 is attached to the inner contact 2b.
Of the outer contact plate 10 contacts the outer contact 2c.

Since the contacts 2b and 2c are concentrically arranged, when the microphone 2 is fitted into the recess 5e of the upper case 5 and assembled, the press contact connector 1 is replaced by the microphone 2
On the other hand, at any position in the circumferential direction, the first contacts 11, 11 of the contact plates 9, 10 can be brought into contact with the corresponding contacts 2b, 2c. Therefore, the assembly to the microphone 2 becomes very easy. The unit U can be easily assembled by covering the assembly thus assembled with the cover 3 as shown in FIG.
Assembly work is very easy.

Although not shown, the set unit U is pressed against the substrate 26 by the cover of the device. When the unit U is set on the board 26 in this manner, the assembling to the device is completed, and the assembling of the unit U to the device becomes very easy. In the unconnected state as shown in FIG. 4, the intermediate portions 13 of the contact plates 9 and 10 are accommodated in the accommodation spaces 7 and 8.
Although it may be allowed to move in the pressing direction of each contact 11, 12 inside, as shown in FIG. 8, the pressure contact connector 1 is sandwiched between the microphone 2 and the substrate 26, and the main body portion 14 of the intermediate portion 13 is bent. It is only necessary to achieve a state in which the intermediate portion 13 is allowed to move in the pressing direction of the contacts 11 and 12 in the accommodation spaces 7 and 8 in the state of strengthening. As a result, the pressing force received from the corresponding microphone 2 and the substrate 26 by the first and second contacts 11 and 12 in the state where the press-connecting connector 1 is sandwiched between the microphone 2 to be connected and the substrate 26 is an intermediate portion. It will be in equilibrium with each other via 13.

As a result, the stroke amount of each of the contacts 11 and 12 when the press contact connector 1 is sandwiched between a pair of connection objects is determined by the contact plate 9 from the first contact 11 to the second contact 12.
(Or 10) It can absorb between the total height H (see FIG. 4). Therefore, it is possible to secure a sufficient contact pressure at each of the contacts 11 and 12 even if the height is low and the contact is thin, and it is possible to achieve a substantial reduction in thickness. No need for laborious soldering work, and
Since the contact plates 9 and 10 are housed between the case 5 and the lower case 6 of the connector body 4, the manufacturing cost is low.

The present invention is not limited to the above-mentioned embodiment, and a speaker of a mobile phone may be used instead of the above-mentioned microphone, for example. Various modifications can be made within the scope of the present invention.

[0020]

According to the first aspect of the present invention, the stroke amount of each contact when sandwiched between a pair of connection objects by setting the intermediate portion of the contact plate in a free state is changed from the first contact to the second contact. Can be absorbed between the entire height of the contact plate up to the contact point. Therefore, it is possible to secure a sufficient contact pressure at each contact even with a thin type having a low height, and to achieve a substantial reduction in thickness. Moreover, this can be realized at low cost with a simple structure in which the contact plate is housed in the housing space of the connector body.

According to the second aspect of the present invention, when the concentric contacts are formed on the surface of the object to be connected, each contact is provided regardless of the position of the connector body of the disk plate in the circumferential direction with respect to the object to be connected. Can be brought into contact with the corresponding contacts. Therefore, the attachment to the connection target becomes very easy. According to the third aspect of the present invention, after the connection target and the press-connecting connector, which do not need to be aligned in the circumferential direction of each other, are superposed on each other, the elastic cover can be covered to easily form a unit, and the assembling work is very simple. Is. Also,
Since the unit only needs to be set on the board, the assembly of the unit to the device becomes very easy.

[Brief description of drawings]

FIG. 1 is a partially cutaway exploded perspective view of a unit including a press-connecting connector and a microphone according to an embodiment of the present invention.

FIG. 2 is a plan view of a press-connecting connector.

FIG. 3 is a bottom view of the press-connecting connector.

FIG. 4 is a sectional view taken along line IV-IV in FIG.

5 is a cross-sectional view taken along the line VV of FIG.

6A and 6B are respectively a plan view and a bottom view of the upper case of the connector body.

7A and 7B are a plan view and a bottom view of a lower case of the connector body, respectively.

8 is a cross-sectional view showing a state in which the unit is assembled to a device such as a mobile phone, corresponding to FIG.

[Explanation of symbols]

U unit 1 Pressure contact connector 2 microphones (connection target) 3 elastic cover 4 Connector body 5 upper case 6 lower case 7,8 accommodation space 9 Inside contact plate 10 Outside contact plate 11 First contact 12 Second contact 13 Middle part 26 board (connection target) 27 contacts

Front page continuation (58) Fields surveyed (Int.Cl. ⁷ , DB name) H01R 24/10 H01R 4/48 H04M 1/02 H04M 1/03 H04R 1/02 108 H01R 9/09

Claims (3)

(57) [Claims] 1. A connector body, comprising: a contact plate made of a leaf spring having first and second contact points projecting to opposite sides; and a connector body for defining an accommodating space for accommodating an intermediate portion between the contact points. Each contact is exposed from the grooves formed on the upper and lower surfaces of the contact, and the pressing force received from the corresponding connection target by the first and second contacts is sandwiched between the pair of connection targets via the intermediate portion. as balance each other Te, tare allows floating in the middle portion accommodating space of the contact plate in the pressing direction of each contact is, the contact plate is bent at one end of an elongated metal plate in a convex shape
The first contact is formed and the other end of the metal plate is convex.
The second contact that is bent in the direction of the arrow and protrudes in the direction opposite to the first contact
Of the first and second contacts.
Forming a main part that protrudes laterally in the space between
A portion extending from the second contact in a direction opposite to the main body
And thus the contact plate as a whole has a star shape, and the first and second contacts are substantially overlapped in a plan view of the connector body.
The crimping connector is characterized in that it is arranged as follows. 2. The connector body is disc-shaped, the contact plate includes inner and outer contact plates, and each contact of the inner contact plate is formed from an inner groove relatively arranged near the center of the disc. 2. The press-connecting connector according to claim 1, wherein each contact point of the exposed contact plate on the outer side is exposed from an outer groove arranged relatively near the outer circumference of the disk. 3. A disc-shaped connection object having a pair of inner and outer contacts arranged concentrically on the surface, a press-connecting connector according to claim 2 superposed on the connection object, and a connector body of the press-connecting connector. A unit comprising: an elastic cover that integrally covers a peripheral surface of an object and fixes the both surfaces.