JPS622476A - Connector - 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 Field of the Invention The present invention relates to a connector in which a presser cover is closed to a base holding contacts, and a terminal piece of a connected body is pressed between the cover and the contacts to maintain contact.

Conventional technology and its problems As mentioned above, the mechanism for sandwiching and contacting the terminal piece of the connected object between the connector base and the holding cover is a flat type IC package in which the terminal piece protrudes to the side, or a flat type IC package in which the terminal piece is placed in an IC package. Connecting wiring boards such as dress-type IC packages arranged on the edge of the body, plasma display boards with terminal pieces arranged on the edges, or flexible boards with partially exposed parallel conductors. It is commonly used as a form.

The present invention aims to provide a connector suitably used for connecting these objects to be connected, but conventional connectors of this type include, for example, a connector for a 7-rat type TC package. Attach a presser cover to one end of the base via a rotating hinge, and attach a lock lever to the other end of the base via a rotating hinge, close the presser cover, and then secure the lock lever to the free end of the presser cover. The terminal piece is sandwiched between the contact of the connector base and the presser cover, and the contact is compressed by the pressing force of the presser cover to obtain contact pressure.

However, in the above-described conventional mechanism in which the presser foot cover is attached via a hinge mechanism and closed by rotation, the presser foot cover cannot be shifted in parallel to obtain ideal contact pressure, and the presser foot cover that engages with the lock lever cannot be moved in parallel. There is a risk of uneven contact pressure due to floating on the free end side of the cover, and since a hinge mechanism is configured at both ends of the connector base, it tends to be large, and furthermore, the presser cover and lock lever take up a lot of space for deployment. However, there are drawbacks such as the possibility of interference with adjacent connectors mounted on the wiring board.

OBJECTS OF THE INVENTION The present invention provides a connector that employs a mechanism that allows appropriate contact pressure to be obtained by setting the position at which pressing force is applied to the presser cover at an optimum position according to the contact suppressing position.

The present invention provides a connector in which the presser cover can be shifted in parallel in the vertical direction as much as possible to obtain an ideal suppressing posture and contact pressure for the contacts and the terminal pieces mounted thereon.

Further, in the present invention, the presser foot cover and its shift mechanism are integrated,
Loading the presser cover and its shifting operations can be performed in a series of operations, eliminating the inconvenience of having to rotate the presser cover and lock lever separately, and using a hinge for rotation. To provide a connector which can be implemented without the need for vertical movement of a presser cover, which reduces the size of the connector, and which eliminates the disadvantages of a hinge that prevents vertical movement of a presser cover.

The present invention has been constructed in accordance with the above-mentioned object, in which a cantilever fastening lever is rotatably attached to an appropriate position of the presser cover according to the contact arrangement structure of the connector, and the cantilever fastening lever is rotated. A hook is provided in series near the moving fulcrum, and an engaging portion is provided on the other connector base side where the hook engages in a copying manner against a presser cover push-up blade etc. by a contact, and the engagement portion and the hook are coupled in a copying manner. As a configuration in which the connection is made below the lever rotation fulcrum,
The present invention is characterized in that the tensile force by the hook is applied as a substantially vertical tensile force to the lever rotation fulcrum on the presser cover side, so that the presser cover is pulled down in the same direction.

EMBODIMENT OF THE INVENTION One example of the invention is shown in FIGS. 1-5, and the other side is shown in FIGS. 6-8.

First, an embodiment will be described with reference to FIGS. 1 to 5.

1 is a connector base, 2 is a presser cover, and 3 is a cantilever fastening lever. The connector base 1 has contacts 4 arranged along the upper surface of one end thereof.

The contact 4 has a vertically movable contact piece that protrudes outward from the implantation slit. The terminal piece 8 of the object to be connected 7 is placed on the contact piece.

The retainer cover 2 is a separate component that is not connected to the connector base 1, and has a retainer portion 2a extending along the arrangement of the contacts 4. The cantilever fastening lever 3 is fitted into a housing portion 5 defined in the center of the presser cover 2.

The cantilever fastening lever 3 is rotatably attached at one end to a cover side wall defining the housing portion 5 with a shaft 6. The shaft 6, which serves as the rotational fulcrum, is installed at a position as close to the presser portion 2a as possible. A hook 10 is installed in series from the vicinity of the lever rotation fulcrum. The hook 10 protrudes in a direction substantially perpendicular to the cantilever fastening lever 3, and its toe 10a is bent into an oval shape in the direction opposite to the direction in which the lever 3 extends, and the toe Oa
is located below the shaft 6, which is the pivot point.

That is, when the cantilever fastening lever 3 is laid down, the seven claws 10 protrude toward the connector base l, and the claws 1
0a is bent toward the holding portion 2a.

The connector base 1 is provided with a space 12 directly below the accommodating part 5 in which the hook 10 is inserted and allows its rotation.

On the other hand, the connector base 1 is provided with an engaging portion 11 located below the pivot point of the cantilever fastening lever 3 and with which the hook 10 follows and engages.

In the embodiment, the above-mentioned holding part 12a is used and the above-mentioned engaging part 11 is formed on the wall on the side defining the holding part 12a.

As described above, the edge of the object to be connected 7 is placed on the contact 4 with the terminal pieces 8 arranged on the edge, and the presser cover 2 is placed on the connector base 1.

In the loaded state, the presser cover 2 is supported by the contacts 4 above the presser position.

As shown in FIGS. 5A, B, and C, when the cantilever fastening lever 3 in the upright state (uncoupled state) is rotated to the prone state, the hook 10 of the cantilever fastening lever 3 is When the cover is supported, rotational force is applied using the shaft 6 as a fulcrum, so that the toe 10a abuts against the side surface of the engaging portion 11, and the subsequent rotational force causes the contact 4 to push up the presser cover and the rotational fulcrum. Resisting the hook pulling force via the shaft 6, the side surface slides and is secured to the lower surface of the engaging portion 11. In other words, it engages by copying. In order to smoothly carry out the following engagement, an inclined guide surface 11a is formed on the surface that the toe lOa comes into contact with, and a retaining surface 11b consisting of a horizontal surface is formed on the end thereof.

The toe 10a of the hook 10 resists the elasticity of the contact 40 and slides on the inclined guide surface 11a to engage with the engagement surface 11b.

The inclined guiding surface 11a may be an arc-shaped inclined surface, and the retaining surface 11b may be an inclined surface having a reverse taper (having a biting angle with respect to hook rotation) with respect to the inclined guiding surface 11a. . In this case, the tip 10a of the hook 10 is the inclined guide surface 1
1a and the apex of the inclined surface, and engages with the apex and the engagement surface 11b of the inverted taper in a scooped-up manner.

In this case, it is preferable to bend the toe 10a into a substantially U-shape (sixth
(See the embodiments in Figures to Figures 8).

Along with the above-described tracing engagement, a pulling force is generated on the hook 10 (as a reaction of the protruding blade of the hook toe 10a applied to the engaging portion 11), and this pulling force is applied to the lever rotation fulcrum 6. The same vertical pulling force is applied to the presser cover 2 on which the rotation fulcrum 6 is provided. As a result, the holding cover 2 is shifted in parallel in the same direction, compressing the contacts 4, and fastening the holding cover 2 to the connector base 1. The resilient force of the contact 40 brings the terminal piece 8 and the contact 4 into pressure contact.

FIGS. 1, 3, and 5C show the state in which the pressurized contact is completed. As shown in the figure, the cantilever fastening lever 3 is laid down at the same level as the presser foot cover 2 in the above-mentioned fastened state, and its tail end is supported by the support surface 9 at the end of the presser foot cover 2 and placed in a substantially horizontal state. .

The push-up blade of the contact 4 acts as a vertical pulling force on the hook 10, and the cantilever fastening lever 3 is maintained in the prone state, that is, in the above-mentioned engaged state. In order to ensure this engagement, a stop means that can be climbed over may be provided between the cantilever fastening lever 3 and the presser cover 2.

The above work involves mounting the presser cover 2 on the connector base 1,
By tilting the cantilever fastening lever 3 with the mounted finger, both 1 and 2 are fastened and a predetermined pressurized contact is achieved, and conversely, by rotating the cantilever fastening lever 3 in the upright direction, the above-mentioned The fastening and pressurized contact are released, and by lifting the lever 3, the connector base 1 is opened, and the cover 2 is removed together with the lever 3.

That is, the presser cover 2 can be fastened to and freely detached from the connector base without using a rotation hinge.

More specifically, in order to set the mounting position of the holding cover 2 on the connector board 1, for example, a convex wall portion 16 as shown in the drawing is placed on the board 1 side, and a recess 17 in which the projecting wall portion 16 fits into the holding cover 2fIII is placed. form.

Further, as shown in FIG. 8, which will be described later, a positioning pin to be inserted into the presser cover 2 may be set on the base 1.

Two or more cantilever fastening levers shown in the above embodiment can be arranged in parallel depending on the number of terminal pieces 8 and contacts 4.

Next, the other side will be explained with reference to FIGS. 6 to 8.

This embodiment shows a connector suitably used as a socket for a flat type IC package.

The connector board 1 has a central portion as a mounting space for a connected object such as an IC package, and has contacts 4 arranged in parallel in two rows on the left and right along the mounting space as shown in the figure. The contacts 4 are arranged in a rectangular arrangement of two rows on the left and right and two rows on the front and back depending on the arrangement of the terminal pieces of the object to be connected.

The object to be connected has a terminal piece protruding in all directions from its edge, the object to be connected is installed in the mounting space, and the terminal piece is placed on the contact 4.

The presser cover 2 has presser portions 2a and 2b arranged to correspond to the above-mentioned contact arrangement. For example, a terminal piece placed on the contacts is pressed on the inner surface of the presser cover 2 by a protrusion parallel to the rows of contacts 4.

As described above, the contacts 4 have a configuration in which they are arranged symmetrically and in a balanced manner, and it is more desirable that the pressing by the presser cover 2 be performed by a vertical parallel shift in which no tilting force is applied or biased toward one row of contacts.

In view of the above, the shaft 6 serving as the rotational fulcrum of the cantilever fastening lever 3
The engaging portions 11 with which the hooks 10 follow and engage are disposed in the middle of the left and right or front and rear contact rows. As a preferred arrangement, a pair of cantilever fastening levers 3 are freely rotatably mounted on opposing sides of the presser cover 2 with shafts 6. The position of the shaft 6, which is the rotational fulcrum, is set at the middle of the contact rows as described above. The tail ends of both cantilever fastening levers 3 are connected by a connecting bar 14 to enable synchronous operation. The presser cover 2 and the cantilever fastening lever 3 are integrated with each other by the shaft 6, and are separated from the connector base 1 at various angles.

A pair of engaging portions 11 are provided on opposite sides of the other connector base 1.
to protrude. The protruding position of the engaging portion 11 is set at the middle portion of the contact row as described above.

The hook 10 is connected to the vicinity of the pivot point of the cantilever fastening lever 3, and when the lever is laid down along the side surface of the presser cover 2 to approximately the same level as the cover and is in a substantially horizontal state, the engaging portion 11 by copying and engaging with the bottom surface of 11. Due to the above-described structure, the engagement position of the engagement portion 11 and the toe of the seven claws 10 is near a vertical line passing through the shaft 6, which is the rotational fulcrum of the cantilever fastening lever 3.

In other words, the rotation fulcrum and the engagement position are located near two perpendicular lines on both sides of the connector with respect to the holding surface of the holding cover 2, and near the middle of the contact arrangement.

As described above, the presser cover 2 is placed in a state where it is supported horizontally by the contacts 4, and in the same state, the hook 10 rotates around the shaft 6 as described above and presses the engaging portion 11 while resisting the push-up blade of the contact 4. engage according to the

As a reaction, a tensile force is generated on the hook 10, and this tensile force is applied to the shaft 6, which is a pivot point, and pulls down the presser cover 2, which is connected to the shaft 6, vertically and in parallel.

As a result, the contacts 4 are equally compressed in each row, and their repulsive elasticity is evenly applied to the terminal pieces. At the same time, the engagement between the hook toe 10a and the engaging portion 11 is maintained due to the hook pulling action caused by the repulsive elasticity, and the engagement between the two 1 and 2 is maintained.

In order to guide the parallel shift of the presser cover 2, a guide pin 15 is erected on the connector base 1, and a guide hole 3 into which the guide pin 15 is inserted is provided in the presser cover 2.

The connection is released, the connection between both 1 and 2 is released, and the lever 3 is held and removed together with the presser cover 2, and the connector board l is removed.
The top is open to allow attachment and detachment of objects to be connected.

Effects of the Invention As described above, the present invention rotates the cantilever fastening lever on the presser cover side and rotates the hook around the lever rotation fulcrum, thereby reducing the elasticity of the contact to the engaging portion on the connector base side. A counter-copying engagement is obtained, and in cooperation with the hook pulling force due to the repulsive elasticity of the contact accompanying the copying engagement, good retention and fastening of both the presser cover and the connector base are achieved.

It is preferable that the hook resists the repulsive elasticity of the above-mentioned contact to generate a tensile action in a substantially vertical direction on the hook, and that the tensile force is applied to the lever rotation fulcrum to shift the presser cover as close to parallel as possible. Uniform contact with the desired pressing force at the appropriate lower limit stationary position without causing back action or uneven pressing force at the lock lever engagement part, such as when pulling down in the suppressing posture and rotating the presser cover with the hinge to suppress it. can be accomplished.

In addition, there is no space restriction such as having to avoid the contact placement area where the cantilevered fastening lever is attached, and the most preferable rotation fulcrum position according to the suppression position of the contact arrangement on the presser cover side is selected and the mounting is performed for suppression. Can be done.

Further, in the present invention, the presser foot cover and its shift mechanism are integrated,
The mounting of the presser cover and its shifting operation can be performed in a series of operations, and can be carried out without using a hinge for rotation, and the contact arrangement area () is kept to the minimum size, achieving miniaturization of the connector. Therefore, it is possible to provide a connector that eliminates the disadvantage of a hinge that makes vertical movement of the presser cover impossible.

[Brief explanation of drawings]

FIG. 1 is a perspective view of a connector in a fastened state showing an embodiment of the present invention, FIG. 2 is a perspective view of the same connector showing an unfastened state, and FIG. 3 is a cross-sectional view of the same connector showing a state in which a connected object is being held. 4 is an exploded perspective view of the connector showing the cross section of FIG. 3; FIG. 5 is a sectional view of the connector showing the AU unfastened state; FIG. 5B is a sectional view of the connector showing the state immediately before fastening. , FIG. 5C is a cross-sectional view of the same connector showing the completed state of fastening, FIG. 6 is a perspective view of the connector in the fastened state showing the other side of the present invention, and an off view is a perspective view of the connector in the unfastened state. FIG. FIG. 2 is a perspective view of a connector base constituting the same connector. 1... Connector base, 2... Presser cover, 3...
Cantilever fastening lever, 4... Contact, 6... Shaft serving as a rotation fulcrum, 7... Connected object, 8... Terminal piece, 10
... Hook, 10a... Toe, 11... Engagement part. − &

Claims (1)

[Claims] The terminal pieces arranged on the object to be connected are placed on the contacts arranged on the connector base, and a presser cover that presses the terminal pieces on the connector base is closed to compress the contacts and obtain contact pressure by their repulsive elasticity. In the connector, a cantilevered fastening lever is rotatably provided on the presser cover, a hook is connected to the vicinity of the rotational fulcrum of the cantilevered fastening lever, and a hook is connected to the connector base to allow rotation of the cantilevered fastening lever. An engaging portion is provided below the fulcrum, and the hook engages in a copying manner against the push-up force of the presser cover by the contact and the hook pulling-up force via the rotational fulcrum, and A connector characterized in that the contact pressure is obtained by a force for pulling down the presser cover by a hook applied to the lever rotation fulcrum.