CN103001034A - Electric connector - Google Patents

Abstract

The present invention relates to an electrical connector built in, for example, a mobile phone and used for battery connection, and aims at miniaturization and improvement of durability. The shape of the contact piece (30) provided by the present invention is: the spring portion (32) which is located behind the contact portion (31) and is elastically deformed by being pressed by the contact portion (31) from the counterpart contact, and has a The shape in which the wire is repeatedly folded back and forth in the left and right direction and extended back and forth is subjected to bending processing, whereby the folded back part ( 321 ) in the left and right direction at the time of punching is bent to the direction facing the other parts of the spring part ( 32 ).

Description

electrical connector

technical field

The present invention relates to an electrical connector built in, for example, a mobile phone and used for battery connection.

Background technique

There is a demand for thinner mobile phones. In order to meet this requirement, in Patent Document 1, a so-called contact portion protruding forward from the case and an elastically contracted coil spring arranged at the rear of the contact portion, which is in contact with a counterpart contact (hand contact) such as a battery, is proposed. pogo pin connectors. However, the pogo pin connector proposed in Patent Document 1 has a large number of parts and high cost.

Patent Document 2 proposes an electrical connector in which a contact including a spring portion serving as the above-mentioned coil spring is integrally formed by punching and bending a metal plate, and the number of parts is reduced.

Patent Document 1: Japanese Patent Laid-Open No. 2011-96606

Patent Document 2: Japanese Patent Application Laid-Open No. 11-162592.

Contents of the invention

However, in the electrical connector proposed in Patent Document 2, in order to ensure sufficient displacement of the contact portion, it is necessary to increase the height of the contact and the length in the front-rear direction. Therefore, it is difficult to miniaturize the electrical connector. In addition, in the electrical connector of Patent Document 2, the punched surface of the spring portion of the contact formed by punching faces the inner wall surface of the housing. Since the spring portion is deformed each time the mating contact presses the contact portion, the case may be scratched by the punched surface of the spring portion, and there remains a problem with the durability of the electrical connector.

In view of the above circumstances, the present invention aims to provide an electrical connector that achieves miniaturization and improved durability.

The electrical connector of the present invention that achieves the above object is characterized in that it has:

The contact member has: a contact part protruding to the front, contacting the counterpart contact, and being pressed backward from the counterpart contact; deformation; and the terminal portion, which is located more rear than the spring portion, is responsible for electrical connection, and the contact member is integrally formed by punching and bending a metal plate; and

The housing accommodates the above-mentioned contact piece so that the contact portion protrudes to the front,

The above-mentioned spring portion has a shape in which the wire is repeatedly folded back and forth in the left and right direction at the time of punching and extends back and forth.

In the electrical connector of the present invention, the point that the contact is integrally formed by punching and bending a metal plate is the same as that of the aforementioned Patent Document 2. However, in the present invention, the folded-back portion in the left-right direction at the time of punching the spring portion of the contact is bent in a direction facing the other portion of the spring portion or more. Therefore, miniaturization can be achieved, and durability is also improved because the punched surface does not face the inner wall surface of the housing.

Here, in the electrical connector of the present invention, it is preferable that the spring portion has a shape such that the punching of the wire forming the spring portion is smaller than the distance in the front-rear direction inside one folded portion at the time of punching of the wire forming the spring portion. The intervals in the front-back direction between the folded portions adjacent to each other in the front-back direction at the time of cutting are wider.

When comparing the inside and outside of the folded portion, when the contact portion is pressed by the counterpart contact, the folded portion acts as a resistance to deformation, and the inside is more difficult to deform than the outside. Therefore, when the contact portion is pressed backward, if the distance between the inner side and the outer side is equal to each other, there is a margin for deformation on the inner side, and the outer side is in a state where the wires are in contact with each other and further deformation cannot be performed.

Therefore, by making the intervals on the outside wider than those on the inside, a larger amount of deformation can be ensured with a small-sized spring portion.

As described above, according to the electrical connector of the present invention, miniaturization and improvement in durability are achieved.

Description of drawings

FIG. 1 is an external perspective view of an electrical connector as an embodiment of the present invention.

FIG. 2 is a plan view showing one contact of the electrical connector shown in FIG. 1 by breaking the upper wall of the housing.

FIG. 3 is a XX cross-sectional view of the electrical connector shown in FIG. 1 .

FIG. 4 is a perspective view of contacts constituting the electrical connector shown in FIG. 1 .

FIG. 5 is a perspective view showing the shape of the contact during punching in the manufacturing process of the contact.

Explanation of reference signs

10 electrical connector; 20 shell; 30 contact piece; 31 contact part; 32 spring part; 33 fixed part; 34 terminal part; 321 foldback part.

Detailed ways

Embodiments of the present invention will be described below.

FIG. 1 is an external perspective view of an electrical connector as an embodiment of the present invention. In addition, FIG. 2 is a plan view showing one contact of the electrical connector shown in FIG. 1 by breaking the upper wall surface of the housing. In addition, FIG. 3 is a XX cross-sectional view shown in FIG. 1 of the electrical connector shown in FIG. 1 .

Moreover, FIG. 4 is a perspective view of contacts constituting the electrical connector shown in FIG. 1 . FIG. 5 is a perspective view showing the shape of the contact during punching in the manufacturing process of the contact.

The electrical connector 10 is composed of a housing 20 and contacts 30 . Three contacts 30 are accommodated in the electrical connector 10 shown here, and in FIG. 1 , contact portions 31 of these three contacts 30 protrude from the housing 20 . In addition, the number of contacts 30 may be other than three, for example, four. The electrical connector 10 is a connector mounted on a mobile phone (not shown) for electrically connecting a battery, a circuit board, and the like. The contact portion 31 of the contact 30 is in a state of being pressed in a direction of being drawn into the case 20 when it comes into contact with a contact point of the battery.

The contact 30 is formed into a shape shown in FIG. 4 by punching and bending a metal sheet. In FIG. 5 , the state after punching and before bending in the manufacturing process of the contact is shown. Although what is shown in FIG. 5 is a plate material punched into a shape that functions as a contact after bending rather than a contact, but here, the same reference numerals as after bending are used to show, In addition, the name after bending process is used for description.

The contact 30 is punched into the shape shown in FIG. 5 and then bent into the shape shown in FIG. 4 .

The contact 30 has a contact portion 31 formed in front thereof, and a spring portion 32 formed behind the contact portion 31 . Furthermore, a fixing portion 33 and a terminal portion 34 are formed behind the spring portion 32 .

As described above, the contact portion 31 is a portion that protrudes forward, contacts a counterpart contact (here, assumed to be a battery contact), and is pressed backward from the counterpart contact.

In addition, the spring portion 32 is a portion that elastically deforms when the contact portion 31 is pressed from the counterpart contact point.

In addition, the fixing portion 33 is used to press the contact piece 30 into the housing 20 when it is inserted into the housing 20 and press it against the inner wall of the housing 20 so as to fix the contact piece 30 at a predetermined position in the housing 20 part. A press-fit protrusion 331 is provided on an end edge of the fixing portion 33 .

Furthermore, as shown in FIGS. 2 and 3 , the terminal portion 34 is a portion exposed from the rear of the case 20 and responsible for electrical connection with a circuit board or the like (not shown).

Here, the spring portion 32 has a shape in which the wire is repeatedly folded back and forth in the left and right directions and extended back and forth at the time of punching shown in FIG. 5 . Then, by subjecting the spring portion 32 to the bending process, as shown in FIG. The spring portion 32 expands and contracts each time the contact portion 31 is pressed by the counterpart contact. Therefore, in the case of the conventional structure in which the fracture surface of the contact formed during punching contacts the inner wall surface of the housing, the inner wall surface of the housing may be repeatedly scraped and there is a problem in durability. On the other hand, in this embodiment, since the folded-back portion 321 is bent in a direction opposite to the other portion of the spring portion 32, even if the spring portion 32 expands and contracts, the inner wall surface of the housing 20 can be lessened from being scratched by the fractured surface. case, increased durability. In addition, since the spring portion 32 is bent into the shape shown in FIG. 4 , the external shape of the contact 30 can be reduced, and the overall size of the electrical connector 10 can be reduced.

In addition, in this embodiment, the folded portion 321 is bent in a direction opposite to that of the other portions, but the folded portion 321 may be bent deeper if there is a margin.

The spring portion 32 is also characterized by the distance between the wires forming the spring portion 32 . Here, as shown in FIG. 2 and FIG. 4 , the interval in the front-rear direction of the inner side of one folded portion 321 at the time of punching forming the spring portion 32 is d1, and the folded-back portions adjacent to each other in the front-rear direction at the time of punching are defined as d1. The distance between the parts 321 in the front-back direction is d2. At this time, for the spring portion 32, d1<d2.

When the contact portion 31 is pressed by the counterpart contact and the spring portion 32 is contracted, the folded-back portion 321 has relatively high rigidity and acts as a resistance to deformation. That is, when the spring part 32 contracts, if the inner side (the part of the dimension d1) and the outer side (the part of the dimension d2) of the folded-back part 321 are compared, then the outer side (the part of the dimension d2) is compared with the inner side (the part of the dimension d1). part) contract more in the front-to-back direction. Therefore, in the case of d1=d2, when the spring part 32 contracts, the outer side (the part with the dimension d2) first becomes a state where the wires are in contact with each other and does not further contract.

Since d1<d2 in this embodiment, compared with the case where d1=d2, a larger deformation amount can be ensured by the spring part 32 of a smaller size.

In addition, here, an electrical connector intended to be incorporated in a mobile phone is assumed to be described, but the electrical connector of the present invention is not limited to a mobile phone, and can be widely applied.

Claims (2)

1. An electrical connector, characterized in that, possesses: The contact member has: a contact part protruding to the front, contacting a counterpart contact, and being pressed backward from the counterpart contact; Elastic deformation; and the terminal part, which is located more rearward than the spring part, is responsible for electrical connection, and the contact is integrally formed by punching and bending a metal plate; and a housing for accommodating the contact piece so that the contact portion protrudes to the front, The spring part has a shape in which the wire rod is folded back and forth repeatedly in the left and right directions and extends forward and backward at the time of punching. After the bending process, the folded part in the left and right direction at the time of punching is bent to a position opposite to the other parts of the spring part. towards the above. 2. The electrical connector as claimed in claim 1, wherein, The spring portion has a shape such that, compared with the distance in the front-rear direction inside one folded portion at the time of punching of the wire rod forming the spring portion, the folded portions adjacent to each other in the front-rear direction at the time of punching the wire rod The spacing in the front-to-back direction is wider.

Images