JP3182519B2 - Modular jack - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a modular jack used for connecting a telephone line or a wiring for a network.

[0002]

2. Description of the Related Art A conventional modular jack 21 used for connection of a telephone line or the like is, as shown in FIG.
By this, the cable 23 connected to the plug 22 and the connected object such as the cable 24 connected to the jack are electrically connected. This modular jack 2
1 is a case 25 that engages with the plug 22 and a contact 26 whose rear end is connected to the cable 24 and extends forward, and whose tip is folded back from a folded portion 26a provided in the middle. And a contact holding portion 27 for holding the contact 26 in the case 25. When plug 22 is inserted into modular jack 21, case 2
5 is pressed by the contact member 28 on the plug 22 side, and the folded portion 26a abuts on the front portion of the contact holding portion 27 and bends in a state where the contact 26 and the contact member 28 contact each other. , Plug 22 is engaged with case 25.

[0003] Such a conventional modular jack 21
When the contact 26 in the case 25 is bent, stress concentrates on the contact portion 29 of the folded portion 26a of the contact 26 with the contact holding portion 27. Therefore, when the plug 22 is repeatedly inserted and removed, the folded There is an inconvenience that the portion 26a is fatigued and damaged.

[0004]

SUMMARY OF THE INVENTION The present invention aims at improving a modular jack. More specifically, in order to solve the above-mentioned disadvantage, even if the plug is repeatedly inserted and removed, the contact does not interfere and the durability is improved. The purpose is to provide a modular jack having a high height.

[0005]

In order to achieve the above object, a modular jack according to the present invention comprises a case engaged with a plug having a contact member, and a rear end provided in the case and having a rear end connected to an object. A contact that is electrically connected to the front end and extends forward and backward at a predetermined angle from a folded portion provided at an intermediate portion at a predetermined angle from the folded portion provided at the intermediate portion; A contact holding portion that holds the vicinity of the rear end of the child and has a front portion extending to the vicinity of the back surface of the folded portion, wherein the contact is connected to the plug when the plug is engaged with the case. In the modular jack, which is pressed by the contact member and the bent portion comes into contact with the front portion of the contact holding portion to bend and come into contact with the contact member of the plug, between the folded portion of the contact and the distal end portion Back of Provided on the upper surface of the contact holding portion at intervals against the plug has said in contactor bent abuts against the rear surface of the contact abutment when engaged in said case , Contact of the contact portion with the back surface of the contact
The surface is formed corresponding to the elastic curve when the contact is bent.
It is characterized by having been done.

According to the modular jack of the present invention, when the plug is inserted, first, the contact in the case is pressed by the contact member of the plug, and the folded portion comes into contact with the front of the contact holding portion. Bend. At this time, the stress generated in the contact is generated in a contact portion of the folded portion with a front portion of the contact holding portion. When the plug further advances into the case, the back surface between the folded portion and the tip portion of the contact in the case comes into contact with the contact portion. At this time, stress is also generated in the contact portion at the contact portion with the contact portion. Thus, according to the modular jack of the present invention, the stress generated in the contact is
The contact holding portion can be dispersed also in the contact portion with the contact portion without being concentrated on the contact portion with the front portion. Therefore, when the plug is engaged with the case,
Since the stress does not concentrate on the folded portion and is not damaged, it is possible to provide a modular jack having higher durability of the contact as compared with the related art.

The contact surface of the contact portion with the back surface of the contact is formed so as to correspond to an elastic curve when the contact is bent. When bent by being pressed by the contact member, the bent shape becomes an elastic curve. Therefore, by making the contact surface of the contact portion with the contact back surface a shape corresponding to the elastic curve of the contact, when the contact is bent, the back surface and the contact portion are separated. The contact can be made in a wide range. Thereby, the stress generated in the contact can be dispersed over the entire contact surface with the contact portion.

In the modular jack according to the present invention, the contact holding portion may hold the contact behind the folded portion of the contact, and may project the front portion into a shape corresponding to the back surface of the folded portion. A part is provided with an interval and the lower part is provided with an interval with respect to the contact between the folded part and the rear end, and when the contact bends, the lower part is more than the folded part. It is preferable that a rear contact is in contact with a lower portion of the contact holder, and the folded portion is in contact with a front of the contact holder.

[0009] According to this, when the plug is engaged with the case, the contact is held by the contact holding portion at a position rearward of the folded portion. Bends. Here, since a space is provided between the lower portion of the contact holding portion and the contact between the folded portion and the rear end, first, the contact behind the folded portion is contacted with the contact. It contacts the lower part of the child holding part. As a result, stress is generated in a portion of the contact element behind the folded portion. Further, when the contact is bent, the folded portion comes into contact with the front portion of the contact holding portion, so that a stress is also generated at the contact portion. At this time, since the front portion of the contact holding portion protrudes in a shape corresponding to the back surface of the folded portion, the back surface of the folded portion and the front portion of the contact holding portion abut in a wide range.
Further, when the contact is bent, the contact between the folded portion and the tip comes into contact with the contact portion, so that stress is also generated at the contact portion. As described above, according to the modular jack of the present invention, since many points of the contact are in contact with the contact holding portion and the contact portion, the stress generated in the contact can be dispersed. The durability of the contact can be improved.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of a modular jack according to the present invention will be described with reference to FIGS. FIG. 1 is an explanatory view showing a PC card having a modular jack as an example of the embodiment of the present invention, FIG. 2 is a sectional view taken along the line II-II of FIG. 1, and FIG. 3 shows the internal configuration of the modular jack of the present embodiment. FIG. 4 is an explanatory view showing an engagement state between the modular jack and the plug according to the present embodiment.

As shown in FIG. 1, a modular jack 1 according to this embodiment is a P-type jack used in a notebook computer or the like.
This is used for the C-card type network modem card 2. Modular jack 1 of the present embodiment
Is provided at the front of the network modem card 2 and includes a case 3, contacts 4, and a contact holder 5, as shown in FIG.

The case 3 is, as shown in FIGS.
In the present embodiment, the main case 3a and the front case 3b
And an inner case 3c provided inside the two cases 3a and 3b. The rear part of the main case 3a is formed so as to be inserted into a PC card slot (not shown) provided in the notebook personal computer so as to correspond to the shape of the connection part of the PC card slot. The front case 3b is formed separately from the main case 3a,
It is fixed to the front part of the main case 3a. Inner case 3
c is formed by injecting a synthetic resin into a mold, and a contact holder 5 protruding forward is integrally provided at a lower portion thereof.

The contact 4 is formed by punching a metal plate into a needle shape. As shown in FIG. 2, a rear portion of the contact 4 is embedded in the inner case 3c. It extends forward and extends rearward and obliquely upward from the folded portion 4a. The rear end 4b of the contact 4 projects upward from the rear upper surface of the inner case 3c, as shown in FIG. Object) is soldered.

As shown in FIG. 2, the contact holding portion 5 extends forward from the vicinity of the lower end of the inner case 3c, and its front portion 5a is formed on the back surface of the folded portion 4a of the contact 4. It protrudes in an arc shape corresponding to the shape. In addition, a contact portion 8 is provided at an upper portion thereof, which protrudes in an arc shape in a side view so as to correspond to an elastic curve when the contact 4 is pressed and bent by the contact member of the plug. In the present embodiment, the contact portion 8 is formed integrally with the contact holder 5.

The distance 6 between the contact 4 and the contact holder 5
Are formed from the lower rear part of the contact holding part 5 toward the front, and are formed up to the upper surface of the contact part 8 via the front part 5 a of the contact holding part 5. The interval 6 is formed when the folded portion 4a of the contact 4 is formed. In particular,
The folded portion 4a of the contact 4 is not formed when it is integrally formed with the inner case 3c,
After the molding of c, the tip of the contact 4 is bent backward, and the back surface of the contact 4 is brought into contact with the contact holder 5 to form the contact 4. By forming the folded portion 4a of the contact 4 in this manner, the interval 6 having the above-described configuration is formed between the back surface of the contact 4 and the contact holding portion 5 due to the spring back of the contact 4. As described above, in the present embodiment, when the contact 4 is configured as described above, since the contact 4 is formed using the shapes of the contact holding portion 5 and the contact portion 8, no special bending jig or the like is required. Therefore, the manufacture of the modular jack 1 becomes easy.

The plug 9 is connected from a normal telephone line to the modem port of the network modem card 2 of the present embodiment. As shown in FIG.
And a contact member 11 connected to the contact member.

Next, a case where the plug 9 is inserted into the modular jack 1 of the present embodiment formed as described above will be described. As shown in FIG. 4A, when the plug 9 is inserted into the modular jack 1, first, the contact 4 on the jack side comes into contact with the contact member 11 of the plug 9 and is pressed. Then, as shown in FIG. 4A, the folded portion 4a of the contact 4 and the back surface behind the folded portion 4a and the contact holding portion 5 come into contact with each other.

Next, when the plug 9 is further inserted into the modular jack 1, the contact member 11 of the plug 9 presses the contact 4 on the jack side, so that the contact 4 on the jack side bends. Since the contact portion 8 is formed so as to correspond to the elasticity curve from the folded portion 4a to the distal end of the contact 4, the back surface of the contact 4 contacts the wide range as shown in FIG. It contacts the part 8.

As described above, according to the modular jack 1 of the present embodiment, when the plug 9 is engaged with the modular jack 1, the contact 4 on the jack side contacts the contact holder 5 in a wide range. Because of the contact, the stress generated in the contact 4 can be dispersed. Therefore, it is possible to provide a modular jack having less damage due to fatigue of the contact 4 and higher durability than the conventional modular jack.

Further, since the contact 4 is less damaged by fatigue, the elasticity of the contact 4 can be maintained long, and the contact state between the contact 4 on the jack side and the contact member 11 of the plug 9 can be maintained well. It is. For this reason, there is no possibility that the contact 4 on the jack side and the contact member 11 of the plug 9 will be in poor contact.

[0021]

[0022] In the above embodiment, but that using a modular jack 1 to the network modem card 2 has been described as an example, not limited thereto, the modular jack 21 for connecting a telephone line shown in FIG. 5, for example The contact holding portion 27 may be provided with a contact portion. Further, in the above-described embodiment, the contact holding portion 5 and the contact portion 8 are integrally formed. In the above embodiment, the plug 9 for the telephone line has been described as an example, but the plug (not shown) for the Ethernet cable used for the network is also the same.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing a PC card having a modular jack as an example of an embodiment of the present invention.

FIG. 2 is a sectional view taken along line II-II of FIG.

FIG. 3 is an explanatory diagram showing an internal configuration of the modular jack of the embodiment.

FIG. 4 is an explanatory cross-sectional view showing an engagement state between a modular jack and a plug.

FIG. 5 is an explanatory sectional view showing a conventional modular jack.

[Explanation of symbols]

1 ... modular jack, 3 ... case, 4 ... contact, 4
a: folded portion, 5: contact holding portion, 6: interval, 7a ...
Terminal portions (connected objects) of the circuit board, 8 contact portions, 9 plugs, 11 contact members of plugs.

Claims (2)

(57) [Claims] 1. A case for engaging with a plug provided with a contact member, and a rear end portion provided in the case is electrically connected to an object to be connected, extends forward and is provided at an intermediate portion. A contact whose leading end is folded upward and rearward at a predetermined angle from the folded portion, and at least a portion near the rear end of the contact provided in the case and has a front portion near the back surface of the folded portion. A contact holding portion extending to the case, and when the plug is engaged with the case, the contact is pressed by a contact member of the plug, and the folded portion is provided at a front portion of the contact holding portion. In a modular jack that abuts and bends to contact a contact member of the plug, the modular jack is provided on an upper surface of the contact holding portion with an interval with respect to a back surface between the folded portion and the distal end of the contact. And the plug is The contact has a contact portion that is bent and abuts on the back surface of the contact when engaged with the base ;
The contact surface of the contact portion with the back surface of the contact is the contact
A modular jack characterized by being formed corresponding to an elastic curve when bent . Wherein said contact holding portion holds the rear than the folded portion of the contactor, and a lower said folded portion with the front is provided to exist between intervals on the rear surface of the folded portion A contact is provided at an interval with respect to the contact between the rear end portion, and when the contact is bent, the contact behind the folded portion comes into contact with a lower portion of the contact holding portion. The modular jack according to claim 1, wherein the folded portion contacts a front portion of the contact holding portion.