JPH0720861Y2 - Card connector - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention is for a card connector, particularly for a card having a so-called ZIF (zero insertion force) function that requires less force when inserted and has no contact wear. Regarding connectors.

[Conventional technology]

Conventionally, as this type of connector, as shown in FIG. 9, a contact 4 that elastically contacts the contact piece of the card 1 is arranged in parallel in a connector body 3 having an insertion port 2 of the card 1.
The first cam block 5 and the second cam block 6 are formed to move in relation to each other, and the first cam block 5 is moved laterally in one direction to move the second cam block 6 longitudinally in one direction. The card 1 can be inserted into the insertion port 2 in a non-loaded state by pushing the contact 4 outward to open it.

The first half of the first cam block 5 in the other direction laterally moves the second cam block 6 in one direction to release the pushing force of the contact 4 in the outward direction. The contact property of the card 1 is electrically contacted by the spring property. After the first cam block 5 moves in the other half of the second direction, the card 1 is pushed up via the second cam block 6 to rub the contact surface between the contact piece of the card 1 and the contact 4, It is configured to support the same state at the position (Japanese Patent Laid-Open No. 168977/1988).

Next, as shown in FIG. 10, when a contact 4 that makes elastic contact with the contact piece of the card 1 is provided side by side in the connector body 3 having the insertion port 2 of the card 1, a single cam block 5 is formed. The contact block 4 is arranged so as to be movable, and the contact 4 is pushed outward to be opened by the downward oblique movement of the cam block 5, so that the card 1 is allowed to be unloaded. Also, in the first half of the upward oblique movement, the pressing force is released and the contact 4 is closed so as to electrically contact the contact piece of the card 1 by its own spring property, and in the latter half of the upward oblique movement, the contact 4 is closed. While the closed state is maintained, the card 1 is pushed up and the contact piece of the card 1 and the contact 4 are rubbed against each other, and then the same state is supported at a predetermined position (Japanese Patent Laid-Open No. 63-63). -301474).

However, each of the conventional contacts described above has the following problems. That is, (1) when the card 1 is not inserted into the connector body 3, the contact 4
Is forcibly pushed outward by the cam blocks 5 and 6 so as not to come into contact with the contact piece of the card 1 and is in the open state, so that the spring property of the contact 4 is weakened. Moreover,
Since the contact 4 is configured to come into contact with the contact piece of the card 1 by the springiness of the contact 4 itself, the electrical contact state becomes uncertain and unstable. In particular, in a multi-pole connector, each contact 4 and the contact piece of the card 1 may be in a non-contact state or in a contact state, or may be in a contact state but have different contact resistances. Occurs,
Unreliable. (2) has a structure in which the cam blocks 5 and 6 press the contact 4 outwardly.
The 6 must be placed inside the contact 4. Therefore, it can be applied only to the single contact type connector in which the contact 4 contacts the contact piece formed on one surface of the card 1. Strong,
When applied to a double contact type connector in which the contacts 4 are in contact with the contact pieces formed on both sides of the card 1, the lateral width of the entire connector is very large, which is also a limitation in design. Further, since the cam blocks 5 and 6 are cam-engaged so as to move in the vertical direction and the pushing direction, the structure becomes complicated and downsizing is difficult. (3) The contact 4 and the contact piece of the card
Since the card 1 is pushed up in the contacting state to cause a sliding friction, a large sliding frictional force is generated between the two. Therefore, in the case of a multipolar connector, a large force is required for the reciprocating operation of the cam blocks 5 and 6. (4) Due to the above-mentioned contact sliding, the contact piece of the card and the contact 4 are greatly worn and the life is shortened, and the contact reliability is deteriorated.

Further, as a connector of this type, in Japanese Patent Publication No. 47-38155, a linear cam is formed on the opposing surface of the socket connector 80 and the cam slider 90, and the operating cam 102 is rotated to vertically move the socket connector 80. Move the cam slider 90
Is disclosed, in which the female terminal 16 is electrically contacted with the card 160 via the cam slider 90.

[Problems to be solved by the invention]

However, in the Japanese Patent Publication No. 47-38155, the cam slider 90 receives a lateral force and a longitudinal force due to the vertical movement of the socket connector 80. However, since the female terminal 16 is fitted in the groove 96 of the cam slider 90,
The longitudinal movement of the cam slider 90 causes elastic deformation in the same direction, and if the spring property of the female terminal 16 is gradually weakened, it will be damaged and the electrical contact state will become uncertain and unstable. There is.

Further, since the vertical movement of the socket connector 80 is performed by the rotation of the operation cam 102, it is difficult to position the vertical movement of the socket connector 80. That is, the female terminal 16 and the card 160
When and are in electrical contact with each other, the positional relationship between the socket connector 80 and the cam slider 90 is such that the inclined faces of the linear cams face each other, and at this time, the socket connector 80 restores the female terminal 16. The force receives a force in the direction opposite to the longitudinal direction in which the electrical contact is established. However, since the positioning is performed only by the frictional engagement in the pivot portion of the actuating cam 102, the actuating cam 102 rotates the actuating cam 102 in the opposite direction 8 due to the action of the force, and the electrical contact state is uncertain. There is also a problem that it becomes unstable.

[Means for solving problems]

The present invention was made in order to solve the above-mentioned conventional problems, and it is possible to reliably hold the electrical contact state by positioning, and it is not necessary to apply an external force to the female contact. The purpose of the present invention is to provide a connector that does not elastically contact the female contact in the socket connector with the male contact of the plug connector inserted in the socket connector. A cam slider is slidably arranged in the socket connector, and linear motion cams that can be engaged with the facing surfaces of the socket connector and the cam slider are formed respectively, and the peaks of either one of the linear motion cams are formed. The present invention relates to a card connector in which a recess into which the other mountain fits is formed.

〔Example〕

Hereinafter, the present invention will be described in detail with reference to the embodiments shown in FIGS. 1 is a front view of the card connector according to the present invention, and FIG. 2 is a plan view of the connector, and FIG.
FIG. 4 is an enlarged plan view showing a part of the connector removed, and FIG. 4 is a vertical sectional view of the connector when the contacts are opened.
The figure is a plan view showing the cam engagement state when the contact is opened,
FIG. 6 is a vertical cross-sectional view of the connector when the contacts are closed,
FIG. 7 is a plan view showing a cam engagement state when the contacts are closed.

In the figure, reference numeral 1 is a socket connector made of an elongated rectangular insulating housing, and an insertion port 3 of a plug connector 2 is formed on the upper surface thereof along the longitudinal direction. Guide portions 4 of the plug connector 2 are erected in parallel on both ends. Here, the plug connector 2 uses a card edge type in which male contacts are formed on both sides of the edge of the printed circuit board. Reference numeral 5 is a twin contact type female contact which is elastically contacted with male contacts formed on both sides of the plug connector 2 in a sandwiched state. The female contacts 5 are provided inside the socket connector 1 along both sides of the insertion port 3 in the longitudinal direction. The lower halves of the pair of female contacts 5 are inserted into and fixed to the base portion 6 of the socket connector 1 to form the terminal portion 5a. The upper half of the female contact 5 is bent inward from the upper surface of the base 6, bent outward at the contact 5b, and then obliquely downward to form a free end as a pressing portion 5c.

Reference numeral 7 denotes a pair of cam sliders, which are provided between the pressing portion 5c of the female contact 5 and the side wall 8 of the socket connector 1 as shown in FIGS.
Of the left and right cam sliders 7 project from the ends of the socket connector 1 and unite to form a tool insertion port 10a into which a tool 9 such as a screwdriver can be inserted. A movable operation unit 10 having the same is formed. Then, the inner side surface 8a of the side wall 8 of the socket connector 1, the outer side surface 7a of the cam slider 7, and the side wall 8 of the socket connector 1.
Linearly movable cams 11 and 12 that can be engaged with each other are formed on the inner side surface 8a of each. That is, peaks 11A and valleys 11B are periodically formed on the inner side surface 8a of the side wall 8 of the socket connector 1 along the sliding direction, and the peaks 11A are fitted on the outer side surface 7a of the cam slider 7 at the top. Mountain 12A and valley 12B with free recess 12a
And are formed periodically.

As shown in FIG. 3, the stepped side surface 4a of the socket connector 1 on the side of the guide portion 4 and the stepped side surface 7b of the cam slider 7 are formed so as to be capable of contacting with each other to prevent excessive reciprocating movement of the cam slider 7. ing. Further, on the inner side surface of the guide portion 4 in the socket connector 1, a fitting groove 13 of the plug connector 2 continuous with the insertion port 3 is formed with a predetermined depth. Further, the lower portion on the outer surface side of the guide portion 4 of the socket connector 1 is attached to the movable operation portion 10 of the cam slider 7 and the tip portion 9a of the tool 9.
Is cut into an inclined surface 14 that rises outward so that the upper end of the inclined surface 14 serves as a fulcrum portion 14a.

Therefore, first, as shown in FIGS. 1 and 2, when the cam slider 7 moves to the right with respect to the socket connector 1 and is stopped, as shown in FIG. 4 and FIG. Direct acting cam of connector 1 and cam slider 7
In both 11,12, the ridges 11A, 12A have fallen into the troughs 11B, 12B of the opponent, the left and right cam sliders 7 are separated from each other, and no pressing force is applied to the pair of female contacts 5, The contact portions 5b of the female contacts 5 are separated from each other and are in the open state. Therefore, the plug connector 2 inserted from the insertion port 3 can be fitted into the insertion groove 13 with a zero insertion force without contacting the female contact 5.

Next, as shown in FIG. 1, the tip portion 9a of the tool 9 is inserted into the tool insertion port 10a formed at the left end portion of the cam slider 7 and brought into contact with the side wall of the socket connector 1, and the fulcrum portion 14a.
With the tool 9 as the fulcrum, the guide portion 4 of the socket connector 1
When rotated to the side, the cam slider 7 slides leftward in the figure, and both side surfaces 4 of the socket connector 1 and the cam slider 7 are stepped.
Sliding stops when a and 7b hit. During that time, the cam slider 7 moves in the direction of the inclination angle from the trough 12B to the crest 12A of the linear cam 12, and the cam slider 7 and the socket connector 1 move so as to separate from each other, so that they come into contact with the back surface side of the cam slider 7. The pressing portion 5c of the female contact 5 that slides is pressed toward the male contact of the plug connector 2 while sliding on the back side of the cam slider 7.

As a result, as shown in FIGS. 3, 6, and 7, the ridges 11A of the socket connector 1 fit into the recesses 12a of the ridges 12A of the cam slider 7, so that the left and right cam sliders 7 are close to each other. Move and press the female contact 5 respectively
When the contact portions 5b of the female contacts 5 are pressed against the male contacts of the plug connector 2 via 5c and the two are electrically connected, the ridge 11A of the socket connector 1 becomes the ridge 12A of the cam slider 7. Since the cam slider 7 is fitted into the concave portion 12a, the fitting is not easily released even if an inadvertent force is externally applied to the cam slider 7, and the female contact 5 and the male contact of the plug connector 2 are The electrical contact of is reliably and satisfactorily maintained.

Then, when the plug connector 2 is removed, the cam slider 7 is moved back in the reverse order of the above operation,
As shown in FIG. 5, the pressing of the female contact 5 against the male contact of the plug connector 2 is released to form the separated state. As a result, the plug connector 2 can be removed from the insertion port 3 in a resistanceless state. The reciprocating motion of the cam slider 7 can be performed by fingers instead of the tool 9 as described above.

FIG. 8 shows another embodiment of the connector according to the present invention, which is a single contact type in which the female contact 5 is elastically contacted with the male contact formed on one side of the edge of the plug connector 2.
Therefore, the female contact 5 and the cam slider 7 are single, and other configurations are the same as those in the above-described embodiment. In both of the above embodiments, the printed circuit board is used as the plug connector 2, but the present invention is not limited to this, and the FPC (Flexible Printed Circuit), FFC (Fle
Of course, it can also be applied to xible Flat Cable).

[Effect of device]

As described above, the card connector according to the present invention is a connector in which a female contact in a socket connector is elastically contacted with a male contact of a plug connector inserted in the socket connector, and a cam slider is slid into the socket connector. When the movable cams are arranged so as to be movable, linear motion cams that can engage with each other are formed on the facing surfaces of the socket connector and the cam slider, and the peaks of one of the linear motion cams are fitted with the other peaks. (1) The above-mentioned fitting is not easily released even if an inadvertent force is externally applied to the cam slider, and the female contact and the male contact of the plug connector are formed. Electrical contact with is reliably maintained. (2) Since unnecessary external force is not applied to the female contact due to the sliding of the cam slider, elastic deformation of the female contact is prevented as much as possible, and durability is improved. (3) Since the cam slider can be arranged outside the female contact, it can be applied to both single-contact type connectors and double-contact type connectors. The whole can be miniaturized. There are various effects such as.

[Brief description of drawings]

FIG. 1 is a front view of a card connector according to the present invention, and FIG.
The figure is a plan view of the same connector, Fig. 3 is an enlarged plan view of a part of the same connector removed, Fig. 4 is a vertical sectional view of the same connector when the contact is opened, and Fig. 5 is a cam of the same contact when opened. FIG. 6 is a plan view showing the engaged state, FIG. 6 is a longitudinal sectional view of the connector when the contacts are closed, FIG. 7 is a plan view showing the engaged state of the cam when the contacts are closed, and FIG. FIG. 9 is a vertical cross-sectional view showing a connector of the embodiment when a contact is closed, and FIGS. 9 and 10 are vertical cross-sectional views of different conventional card connectors. 1 ... Socket connector, 2 ... Plug connector, 3 ...
… Inlet, 5 …… Female contact, 7 …… Cam slider, 9 …… Tool, 11,12 …… Direct acting cam, 11A, 12A …… Same peak, 11B, 12B …… Same valley, 12a …… Recess.

Claims (1)

[Scope of utility model registration request] 1. A connector for elastically contacting a female contact in a socket connector with a male contact of a plug connector inserted in a socket connector, wherein a cam slider is slidably disposed in the socket connector, and It is characterized in that linear motion cams which can be engaged with each other are formed on the facing surfaces of the socket connector and the cam slider, respectively, and a concave portion into which the other mountain fits is formed at the top of one mountain of the linear motion cam. Card connector.