JPS61206187A - Non-insertion input type card edge 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 Industrial Application) The present invention relates to connectors and their assemblies for inserting and removing card edge type boards used mainly in the electronic device industry, particularly in computer OXF printers, facsimile machines, etc. Concerning solids.

(Prior Art) As a conventional CardEdge connector, a connector as shown in FIG. 7 that realizes connection with a CardEdge by the elastic clamping force of two contacts has been used. In addition, in recent years, as electronic devices have become more densely packaged, forceless insertion connectors have been developed that do not require force when inserting and removing card edges.

In other words, a rotary cam type (Japanese Patent Publication No. 34912/1983 and Japanese Patent Application Laid-Open No. 1984-1983) utilizes an elliptical cam as shown in FIG. 8 to change the spacing between contacts.
124291) and slider-type connectors that utilize the ability to change the spacing between contacts by inserting and removing a slider with a serrated slope as shown in Figure 9 (Utility Model Application No. 54-95894). (see Publication No. 2003) has been proposed.

(Problems to be Solved by the Invention) However, as electronic devices have become more densely packaged in recent years, the conventional connector that utilizes the elastic clamping force of two contacts shown in FIG. The increased insertion/extraction force required caused problems in terms of operability.

However, as the number of components installed on the CardEdge increases, the operating space is reduced, and if excessive force is required when inserting or removing the CardEdge, there is a risk of damaging peripheral equipment or causing injury. . Furthermore, among the non-insertion force type card edge connectors, the rotary cam type connector shown in Figure 8 requires a thick shaft that can withstand the large torque required to rotate the oval cam, making the connector large. However, due to the increase in the number of components to be mounted and the increase in the number of packages, this is extremely disadvantageous in terms of space saving, which is required due to higher mounting density. Due to the increased frequency of insertion and removal, the contacts are deformed, causing problems in connection reliability. Also, the 9th
The slider type card edge connector shown in the figure requires space for insertion of the slider, and the wall thickness of the housing must be thick to withstand the pressing force from the serrated slope of the slider, so the connector must be large. However, it has the problem that it is not suitable for high-density packaging. Furthermore, the following problems are common to both the rotary cam type and slider type. That is, a combination of two independent leaf springs facing each other is used as a contact for connecting the card edge, and the connection is made by sandwiching the card edge due to its elasticity. This means that the elasticity of the two independent leaf spring contacts and the relative spacing between them have a great effect on the connection between the contact and the card edge.

In other words, the relative spacing between the contacts plays an important role in the reliability of the connection, and the relative spacing is absolute because the housing itself to which the contacts are mounted is deformed and the mounting of the contacts to the housing is affected by errors. There was a problem that the reliability of the connection was not guaranteed.

The present invention has been made in view of the above-mentioned problems, and aims to provide a no-insertion-force type card edge connector and its assembly that can withstand frequent insertion and removal, is small, has good operability, and has excellent connection reliability. The purpose is

(Means for solving the problems) Means for solving the above problems will be explained below with reference to the accompanying drawings.

As shown in FIGS. 1 to 3, the non-insertion force type card edge connector according to the present invention includes a) a plurality of U-shaped contacts 1 having two opposing beams 2.3; One of the two beams 2.3 is made longer than the other 3, and each of the two long and short beams 2.3 is provided with a contact that contacts the terminal of the card edge 6 on the opposite side of the two beams. Protruding points 2A and 3A are provided, and the contact points 2A and 3A are
Effective interval G for insertion of card edge 6 between.

When a card edge is inserted parallel to the two long and short beams 2.3, it is narrower than the thickness T of the card edge (
That is, Go<T), and on the other hand, when the contact 1 is inclined toward the long beam 2 side with respect to the card edge 6, it should be made wider than the thickness T of the card edge, that is, G1>■),
and a plurality of contacts 1, each having a contact terminal 4 for connecting to an external device at a predetermined location; b) A rectangular parallelepiped shape in which the plurality of contacts 1 are housed and arranged, and the card edge 6 insertion side surface is open. housing 5
and a housing 5 in which a gap 7 is provided on the back side of the long beam 2 so that the long beam 2 of the contactor 1 is flexible in a direction opposite to the short beam 3 due to its elasticity. It is configured.

Furthermore, the assembly of the non-insertion force type card edge connector according to the present invention, as shown in the embodiments in FIGS. The housing 5 is configured to include means 20 for tilting and returning the housing 5 about the longitudinal center axis or an axis near the center axis.

(Function) Since the present invention has the above-described configuration, it has the following function. That is, when inserting and removing the card edge, as shown in FIG. 2, when the housing 5 is tilted by α degree with respect to the vertical direction by the tilt return means 20, the contact point 2A of the long beam 2 and the short beam 3 is reached.

The effective interval G1 for insertion and removal of the 3A card edge is wider than the thickness of the card edge (2), and insertion and removal can be realized without requiring any insertion and removal force. Further, after inserting the card edge, by returning the housing 5 to an upright position by the tilt return means 20, the effective spacing Go becomes narrower than the thickness T of the card edge, and as shown in FIG. It bends in the gap 7 in the opposite direction to the card edge, and its elasticity elastically clamps the card edge at the contact points 2A, 3A.

Therefore, the terminal of the card edge is reliably connected to the contact point of the contactor.

(Embodiments) Hereinafter, the non-insertion force type card edge connector and its assembly according to the present invention will be explained in more detail based on embodiments with reference to the accompanying drawings.

An example of the material of the contactor according to the present invention is beryllium steel, which can be formed by punching with a press. Also, the thickness of the card edge is Q,
As an example of the design of the contact in the case of 8+u+, the vertical distance between the contact points is 2.5a+m, and the effective length for inserting and removing the card edge between the contact points is ff1Go+, to, 6 mm.
, the inclination angle α is 7 degrees.

Examples of the material of the housing include glass-filled polyester and general-purpose plastics such as polyphenylene sulfide.

Next, an embodiment of a non-insertion force type card edge connector assembly according to the present invention will be described.

In this embodiment, a drive lever provided on a holder for attaching an external device is used to return the connector housing to an inclined position, thereby achieving insertion and removal without requiring any force, and a reliable connection. As an example of an assembly using the means 20 for returning the housing 5 to an inclined position, as shown in FIGS. 4 and 5, the central axis of the housing 5 is parallel to the Instead, a driving member 9 having a driving groove 11 provided diagonally is mounted, and the housing 5 and the driving member 9 are mounted at the longitudinal center of the housing 5 in the bearing portions 10 provided at both ends of the mounting holder 30. The driving lever 8 is connected to the mounting holder 30 so as to be able to return to the tilt by rotating around the shaft or a nearby shaft parallel to the shaft, and the driving lever 8 is connected to the mounting holder 30 at a rotating shaft 12 provided on the mounting holder 30. A lever leg 8B attached to the mounting holder 30 so as to be rotatable about the center of the lever 8 and provided at an end opposite to the lever operating portion 8A is fitted into the drive groove 11.
An example of such a configuration can be given.

According to this example, as shown in FIG. 4, by rotating the drive lever 8 about the rotation shaft 12 from the upright state shown in FIG. While pressing the drive member 9 inside toward the housing 5 side, the drive member 9 is slid. Therefore, the housing 5 with the drive member attached thereto is attached to the bearing portion 10 provided on the mounting holder 30.
, it rotates and tilts around its central axis or a nearby axis parallel to it. In this state, the card edge 6 can be inserted and removed without requiring any force. The state shown in FIG. 4 is the same state of the connector as shown in FIG. 2. Also, Card Edge 6
After the insertion, by returning the drive lever 8 to the upright position as shown in FIG. 5, the housing 5 returns from the tilted state to the upright state and the connector is in the state shown in FIG. 3, thereby realizing a reliable connection. Ru.

Another embodiment of the assembly according to the present invention is shown in FIG.

In this example C, connector boss a is attached to J holder 30,
A guide groove 13 is provided for fitting the part b into the guide groove 13. In this case, by lowering the card edge 6 along the guide 14, it is inserted into the contact in the inclined housing 5 without any insertion force. Next, by pushing the card edge 6 in the insertion direction (downward), the housing 5 moves from the position b1 of the boss b to the position b2 with the position a1 of the connector boss a as a fulcrum.
Then, the boss is pushed downward in parallel from its positions al and b2, and locked at positions az and b3 by the latch section below the guide 13.

(Effects of the Invention) Since the present invention has the above configuration, it exhibits the following effects.

That is, the connector and the contact of the assembly according to the present invention differ from the conventional connector which utilizes the entire plate surface of two leaf springs as a means for obtaining connection with the card edge.
It utilizes the elasticity in the direction of the cut plane produced by punching out a single leaf spring, and can be made compact due to the difference in elastic stress against deflection displacement in the direction of the plate plane and the direction of the cut plane, making it possible to reduce the size of the connector and its assembly. It is suitable for the space saving expected by the industry.

Furthermore, the above-described features of the contactor according to the present invention are effective in withstanding frequent insertion and removal (for example, when testing a package or when it is necessary to frequently replace the package).

In other words, it exhibits far greater resistance to fatigue and deformation due to repeated bending stress than conventional contacts that utilize the elasticity of two leaf springs.

In addition, since the contact according to the present invention is formed by punching with a press, the interval between the contact points of the contact that has the greatest effect on the connection of the card edge can be set with high precision, and the conventional housing can be deformed. It has the advantage of being isolated from other connectors in terms of connection reliability, which is susceptible to assembly errors of the contacts and the housing.

Furthermore, by simply tilting the housing, the card edge can be inserted and removed without requiring any insertion force, providing excellent operability.

[Brief explanation of the drawing]

1 to 3 are cross-sectional explanatory views showing the structure and operation of an embodiment of the non-insertion type card edge connector according to the present invention,
4 and 5 are partially cut away perspective views showing an embodiment of the assembly of the no-insertion type card edge connector according to the present invention; FIG.
FIG. 6 is an explanatory diagram showing another embodiment of the assembly of the no-insertion-force type card edge connector according to the present invention, and FIGS. 7 to 9 are explanatory diagrams each showing conventional card edge connectors. 1...U-shaped contact, 2...Long contact, 3...Suitable beam, 5...Housing, 6...・Card Edge, 7...Gap,
8... Drive lever, 9... Drive member,
10...Bearing part, 11...Driving groove,
20...Inclination return means, 30...Mounting holder.

Claims (2)

[Claims] (1) a) A plurality of U-shaped contacts having two opposing beams, one of the two beams being longer than the other, and each of the two long and short beams having the two A contact point that contacts the terminal of the card edge is provided on the opposite side of the beam, and the effective distance between the contact points for insertion of the card edge is determined by the length of the card edge when the card edge is inserted between the long and short beams parallel to the two beams. A plurality of contacts, which are narrower than the thickness of the card edge, and are wider than the thickness of the card edge when the contacts are inclined toward the long beam side with respect to the card edge, and are provided with contact terminals for connecting to external equipment at predetermined locations; b) A rectangular parallelepiped-shaped housing that houses and arranges the plurality of contacts and has an open surface on the card edge insertion side,
and a housing having a gap provided behind the long beam so that the long beam of the contactor is flexible in a direction opposite to the short beam due to its elasticity. Card edge connector. (2) a) A plurality of U-shaped contacts having two opposing beams, one of the two beams being longer than the other, and each of the two long and short beams having a A contact point that contacts the terminal of the card edge is provided on the opposite side of the beam, and the effective distance between the contact points for insertion of the card edge is determined by the length of the card edge when the card edge is inserted between the long and short beams parallel to the two beams. A plurality of contacts, which are narrower than the thickness of the card edge, and are wider than the thickness of the card edge when the contacts are inclined toward the long beam side with respect to the card edge, and are provided with contact terminals for connecting to external equipment at predetermined locations; b) A rectangular parallelepiped-shaped housing that houses and arranges the plurality of contacts and has an open surface on the card edge insertion side,
a housing provided with a gap behind the long beam so that the long beam of the contact is flexible in a direction opposite to the short beam due to its elasticity; c) a central axis in the longitudinal direction of the housing or the center thereof; A forceless insertion type card edge connector assembly comprising: means for tilting and returning the housing about an axis near the axis.