JPH11339886A - Wiring sheet connector - Google Patents

Abstract

(57) Abstract: A wiring sheet connector according to the present invention reduces the maximum displacement of a contact portion when a sheet holding lever is closed and rotated to a sheet holding position, and reduces the elasticity of the contact caused by repeated displacement. It effectively prevents, and in addition, reduces the operating force of the lever to effectively cope with the narrow pitch and multi-pole of the contacts. A sheet holding lever provided on a wiring sheet connector is closed and rotated to fall down on the upper surface of a wiring sheet, and is opposed to a contact portion of a contact by a sheet holding surface provided on the lever. In the connector for a wiring sheet in which the upper surface of the sheet 1 is pressed at the position where the lever 6 is to be pressed, the loose pressing portion 10 provided continuously to the inner end of the sheet pressing surface 9 of the lever 6 closes from the open rotation position of the lever 6. With the rotation to the rotation position, the upper surface of the sheet 1 moves from the pressure start point P1 inside the contact portion 5 to the pressure end point P2 inside the contact portion 5 while pressing, and the lever 6 closes and turns. The sheet holding surface 9 is configured to shift to the sheet holding position when it is turned down to the position.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connector having a plurality of parallel conductive paths typified by a flat cable and used for connecting a wiring sheet.

[0002]

2. Description of the Related Art A connector for a wiring sheet disclosed in Japanese Utility Model Laid-Open Publication No. 6-77186 has a contact extending in the direction opposite to the insertion direction of the end of the wiring sheet, and is disposed at the free end of the contact at the end of the wiring sheet. And a sheet holding lever for holding the press contact by holding the sheet end between the contact portion of the contact and the exposed end of the conductive path.

The sheet holding lever is pivotally supported so as to be closed and opened in a direction approaching and separating from the upper surface of the wiring sheet. The sheet holding lever is closed and rotated to fall down on the upper surface of the wiring sheet. A sheet pressing surface for pressing the upper surface of the sheet at a position opposed to the contact portion when the sheet pressing lever is fixedly rotated from the closed rotation position to the open rotation position, and Release the sheet holding state. And in this connector,
Provided at the inner end side of the sheet pressing surface is a play-pressing portion that presses the upper surface of the wiring sheet, and the play-pressing portion is arranged so as to have a press start point at a position shifted outward from the contact portion of the contact, With the rotation of the sheet holding lever from the open rotation position to the close rotation position, the free pressing portion applies the upper surface of the sheet from the pressing start point outside the contact portion to the pressing end point inside the contact portion. It moves while pressing, and when the lever is turned down to the closed rotation position, the sheet pressing surface is shifted to the sheet pressing position.

[0004]

As described above, in the prior art, when the sheet holding lever is closed and rotated, the free pressing portion 2 pressing the upper surface of the sheet 1 as shown in FIG. Since the structure is such that the contact portion 3 moves from the contact point 3 toward the pressure end point P2 from the position P1, the contact portion 3 is normally moved from the standby position L1 when the free press portion 2 passes over the contact portion 3 via the sheet 1. Past the pressure contact position L2, and the lower limit position L
In this case, the maximum displacement H when the free pressing portion 2 gets over the contact portion 3 at this time is greatly increased, and as a result, there is a possibility that the elasticity of the contact is deteriorated. In particular, this elastic deterioration becomes more remarkable as the contact becomes narrower and finer. Further, as the pitch of the contacts becomes narrower, the operation force for pushing down the contact portion becomes excessive, and the excessive reaction force of the contact portion causes the central portion of the holding lever to be deformed, thereby causing a problem that the closing rotation becomes difficult. .

[0005]

SUMMARY OF THE INVENTION The present invention provides a connector for a wiring sheet which appropriately solves the above-mentioned problems. The wiring sheet connector has a loose pressing portion for pressing the upper surface of the sheet on the sheet holding lever, and has a pressing start point at a position shifted inward from the contact portion of the contact. With the rotation of the sheet holding lever from the open rotation position to the close rotation position, the loose pressing portion moves from the pressure start point inside the contact portion to the pressure end point inside the contact portion. The structure is such that the upper surface of the sheet is moved while being pressed, and the sheet pressing surface is shifted to the sheet pressing position when the lever is turned down to the closing rotation position.

The sheet pressing lever is rotated at a fixed angle within 90 degrees from the closed rotational position to the open rotational position, and prevents further rotation at the open rotational position. And a rotation restraining means for restraining the sheet press lever from rotating from the closed position.

In the wiring sheet connector, the pressurizing portion starts pressurizing from a position past the contact portion of the connector to the inside,
Since the pressurization is completed on the inner side and the process shifts to the sheet pressing by the sheet pressing surface, the maximum displacement of the contact portion can be reduced as compared with the related art, and the elastic deterioration due to repeated displacement can be effectively prevented. In addition, the operating force of the lever can be reduced to effectively cope with narrowing the pitch of the contacts and increasing the number of poles.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to FIGS.

The wiring sheet connector has a contact 2 extending in a direction opposite to a direction in which the end of the wiring sheet 1 is inserted, and the exposed end of the conductive path 3 disposed at the end of the wiring sheet at the free end of the contact. 4 has a contact portion 5 that makes pressure contact with the contact portion 4.

On the other hand, there is provided a sheet pressing lever 6 for holding the sheet end portion between the contact portion 5 of the contact 2 and the pressure contact and holding the sheet end. The sheet holding lever 6 is supported by a shaft 7 so as to perform a closing rotation and an opening rotation in the approaching / separating direction, and opposes the contact portion 5 when the sheet holding lever 6 is closed and rotated and falls down on the upper surface of the wiring sheet. It has a sheet pressing surface 9 for pressing the upper surface of the sheet at the position.

The sheet holding lever 6 is rotated by a fixed angle from the closed rotation position to the open rotation position to release the sheet holding state by the sheet holding surface 9, and a wire is connected to the inner end side of the sheet holding surface 9. It has a loose pressing unit 10 that presses the upper surface of the sheet 1. The play pressing unit 10 is disposed so as to have a pressing start point P1 at a position deviated inward from the contact portion 5 of the contact 2, and the sheet holding lever 6 is rotated from the open rotation position to the close rotation position. As a result, the free pressing portion 10 moves while pressing the upper surface of the sheet from the pressing start point P1 inside the contact portion 5 to the pressing end point P2 inside the contact portion 5, and the lever moves to the closed rotation position. The sheet pressing surface 9 is shifted to the sheet pressing position when the sheet is folded down.

The sheet holding lever 6 is rotated at a fixed angle within 90 degrees from the closed rotation position to the open rotation position, and prevents further rotation at the open rotation position. Means 1
1 and a rotation suppressing means 12 for suppressing the opening rotation of the sheet holding lever from the closed position.

More specifically, reference numeral 13 denotes a connector housing formed of an insulating material. The connector housing 13 is a sheet receiving space 1 for receiving an end of the wiring sheet 1.
The sheet receiving space 14 is opened at the front end surface of the connector housing 13, and this is used as a sheet receiving port 15. The end of the wiring sheet 1 is inserted into the sheet receiving space 14 through the sheet receiving port 15.

The wiring sheet 1 has parallel conductive paths 3 arranged at equal pitches, exposing the terminals of each conductive path 3, and exposing the exposed end 4 to press contact with the contact portion 5 of the contact 2. . A reinforcing plate 16 is provided on the upper surface of the sheet end including the exposed end 4.
And the exposed ends 4 are arranged in parallel on the lower surface side of the reinforcing plate 16. The wiring sheet 1 is a flexible flat cable as a typical example.

On the other hand, the contact 2 has its base end press-fitted into the rear end of the connector housing 13 and is planted.
The elastic strip 17 extends toward the front end of the connector housing having the sheet receiving port 15, that is, in the direction opposite to the sheet insertion direction, and has surface mounting terminals 19 projecting rearward from the planting portion 18. The elastic strip 17 and the surface mounting terminals 19, that is, the contacts 2 are arranged in parallel in a direction orthogonal to the sheet insertion direction with the above configuration,
Each elastic strip 17 has an upward projection at the free end thereof to form the contact portion 5.

The front half of the sheet insertion space 14, that is, the front half of the connector housing 13 is open on the upper surface, and the sheet holding lever 6 formed of the above-described insulating material is disposed so as to close the open part.

The sheet holding lever 6 has its end in the sheet insertion direction pivotally supported by a shaft 7 on the left and right side plates 20 of the connector housing 13. A pair of left and right shafts 7 are integrally formed at both ends of the sheet holding lever 6 in a direction perpendicular to the cable insertion direction, and bearing holes 21 are provided in respective inner surfaces of the left and right side plates 20 of the connector housing 13.
The shafts 7 slide into the bearing holes 21, and the lever 6 is moved up and down with respect to the connector housing 13 at the end of the sheet removing direction on the shaft 7 as a fulcrum, that is, approaches the inserted wiring sheet 1. It is supported rotatably in the direction of separation.

A slope 22 is provided at the front end of the bearing hole 21, and the shaft 7 is guided by the slope 22 and slides into the bearing hole 21.

The left and right side plates 20 of the connector housing 13 provided with the bearing holes 21 and the slopes 22 are integrally formed so that the base ends thereof are connected to the left and right ends of the contact planting portion 18, respectively. To form an elastic arm that elastically displaces inward and outward.

Therefore, when the shaft 7 gets over the inclined surface 22, the inclined surface 22 is pressed outward to push the right and left side plates 20,
That is, the shaft 7 slides on the bearing 21 while elastically displacing the elastic arm outward. After this sliding, the left and right side plates 20 are restored to the inside. Therefore, the assembly of the lever 6 to the connector housing 13 is quickly performed.

A sheet holding surface 9 made of a flat surface is formed on the lower surface of the sheet holding lever 6, that is, on the surface corresponding to the upper surface of the end of the inserted wiring sheet. The end of the sheet pressing surface 9 in the sheet insertion direction reaches near the axis of the lever 6, and the end of the sheet pressing surface 9 is connected to the play-pressing section 10.

A corner is formed at the end of the lever 6 on the side of the sheet insertion direction, that is, the end face of the lever end supported by the shaft 7 and the sheet holding surface 9, and this corner is formed as described above. It is referred to as a play pressure unit 10. When the lever 6 is rotated to the open rotation position by a fixed angle, the play-pressing unit 10 is placed in a standby state, facing the upper surface of the sheet end in close proximity. In this opposing state, the case where the free pressing section 10 comes into contact with the upper surface of the sheet end is included.

When the lever 6 is pivoted from the open pivot position to the close pivot position in the facing state, the play unit 10 presses the upper surface of the sheet downward and moves along the upper surface as described above. Moving.

The pressing start point P1 of the free pressing portion 10 is arranged at a position shifted to the inside of the contact portion 5 of the elastic strip 17 of the contact 2. Therefore, as described above, the sheet holding lever 6
With the rotation from the open rotation position to the close rotation position, the free pressing portion 10 applies the upper surface of the sheet from the pressing start point P1 inside the contact portion 5 to the pressing end point P2 inside the contact portion. When the lever 6 is pushed down to the closed rotation position, the sheet pressing surface 9 is shifted to the sheet pressing position.

The end of the wiring sheet 1 is connected to the sheet receiving port 15.
When the sheet is inserted into the sheet receiving space 14 from above, a state is formed in which the exposed end 4 of the conductive path 3 is placed on the contact portion 5, and in this state, the lever 6 is closed and rotated from the open rotation position. When the sheet is rotated to the position and falls down on the upper surface of the sheet end, the sheet pressurization inside the contact portion 5 of the play pressurizing portion 10 and the pressurization of the contact portion 5 through the sheet are performed, and the sheet presser is pressed. The sheet is pressed by the surface 9.

While the play unit 10 moves from the pressure start point P1 to the pressure end point P2 inside the contact part 5, a downward force is applied to the contact part 5 via the sheet 1, and this downward force causes When the portion 5 is displaced downward to the lowermost limit together with the elastic strip 17 and the free pressing portion 10 reaches the pressing end point and the sheet pressing surface 9 presses the upper surface of the sheet end, the contact portion 5 is elastically moved. It is slightly elastically restored upward together with the strip 17, and comes into pressure contact with the exposed end 4 of the conductive path 3 at a position displaced below the standby position.

The lower surface of the insertion end of the sheet 1 is a sheet mounting portion 24 formed near the displacement fulcrum at the base end of the elastic strip 17.
To form the above-mentioned pressure contact state.

As described above, the sheet pressing lever 6 is rotated at a fixed angle within 90 degrees from the closed rotation position to the open rotation position, and prevents further rotation at the open rotation position. And an open rotation suppressing means 12 for suppressing the open rotation of the sheet holding lever 6 from the closed position.

More specifically, the implanted portion 1 of the contact 2
8 and above the elastic strip 17 in parallel with the pressure receiving arm 2.
5 is extended toward the sheet removing direction, that is, toward the sheet receiving port 15. The pressure receiving arm 25 extends while being in contact with the inner surface of the top plate 26 of the connector housing 13, and its free end protrudes above the end of the top plate 26, that is, the upper end of the lever 6 that is lying down. The open rotation preventing means 11 for preventing the further open rotation of the lever 6 by forming the upper surface 28 of the shaft support side end of the lever 6 against the free end surface 27 of the pressure receiving arm 25 is formed.

Next, an end of the lever 6 on the sheet removing side,
That is, locking portions 29 are provided on both left and right ends (side ends orthogonal to the sheet insertion / removal direction) of the end of the sheet receiving port 15, and fixed side plates 30 are provided on both left and right ends of the sheet receiving port 15 of the housing 13. The fixed side plate 30 is disposed in front of the free end of the movable side plate 20, and an engagement receiving portion 31 is provided inside the fixed side plate 30.
The locking portion 29 is snap-engaged with the locking receiving portion 31 when the lever 6 is closed and rotated, so that the opening rotation of the lever 6 from the closed position is suppressed. Unless the contact portion 5 is displaced downward, movement of the play pressing portion 10 from the pressing end point P2 side to the pressing start point P1 side is suppressed. Synergistically, the closed rotational position of the lever 6 is reliably maintained.

Further, in order to maintain the open rotation position of the lever 6, a closing rotation inhibiting means 34 for inhibiting the rotation of the lever 6 from the open rotation position in the closing rotation direction is provided. As a specific example, a locking piece 35 that can be elastically displaced up and down is integrally formed with each of the left and right movable side plates 20 of the connector housing 13 and the inside of the housing 13. An engaging portion 36 that engages with 35 is provided.

At the end of the opening rotation, the locking portion 36 engages with the locking piece 35 while displacing the locking piece 35, and at the same time, forms the opening rotation preventing state by the opening rotation preventing means 11. The rotation in the closing rotation direction from the opening rotation position is suppressed by the closing rotation suppression means 34, and the opening rotation position of the lever 6 is reliably maintained.

In order to prevent the central portion of the lever 6 from warping when the free pressing portion 10 presses the sheet 1 to displace the contact portion 5 downward, the free end of the pressure receiving arm 25 is Engage with the upper surface of the shaft support side end. As a specific example,
A downwardly extending upper projection 32 is attached to the free end of the pressure receiving arm 25.
Is provided at the end of the lever 6 on the pivot side, and an underhang projection 33 is provided on the inner surface of the overhang projection 32.
3 is set to a phase hooked state, and the lever 6 is opened and rotated in the phase hooked state. The overhang projection 3
2 and the lower projection 33 are connected to the axis of rotation of the lever 6, that is, the shaft 7.
It is arranged so that the phase can be handled near the axis of
The rotation of the lever 6 is performed without any trouble.

[0034]

According to the wiring sheet connector of the present invention, the pressurizing portion starts pressurizing from a position past the contact portion of the connector to the inside, ends the pressurizing at the same inside, and uses the sheet pressing surface. Since the process shifts to sheet holding, the maximum displacement of the contact portion can be reduced as compared with the related art, and the elastic deterioration of the contact due to repeated displacement can be effectively prevented. In addition, the operating force of the lever can be reduced to effectively cope with narrowing the pitch of the contacts and increasing the number of poles.

[Brief description of the drawings]

FIG. 1 is an enlarged side view for explaining a state of displacement of a contact portion by a free pressing portion in a conventional example.

FIG. 2 is a plan view of a connector housing and a sheet holding lever of the wiring sheet connector according to the present invention before assembly.

FIG. 3 is a front view of the lever.

FIG. 4 is a front view of the housing.

FIG. 5 is a plan view of a connector and a wiring sheet in which a lever is assembled to the housing.

FIG. 6 is a front view of the connector in FIG. 5;

FIG. 7 is a cross-sectional view showing the inner side surfaces of the left and right movable side plates in the connector housing.

FIG. 8 is a cross-sectional view of the connector taken along line AA in FIG. 5;

9A to 9D are cross-sectional views of the connector taken along the line AA in FIG. 5, showing the process of opening the lever, inserting the end of the wiring sheet, closing the lever, and holding the sheet, in order of operation. FIG.

10A to 10D are sectional views taken along the line BB in FIG. 5 corresponding to FIGS. 9A to 9D.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Wiring sheet 2 Contact 3 Conductive path 4 Exposed end 5 Contact part 6 Sheet press lever 7 Axis 9 Sheet press surface 10 Free press section 11 Open rotation prevention means 12 Open rotation suppression means 13 Connector housing 14 Sheet receiving space 15 Sheet Reception port 17 Elastic strip 25 Pressure receiving arm 32 Overhang projection 33 Underhang projection 34 Closed rotation suppressing means

Claims (2)

[Claims] 1. A contact portion having a contact extending in a direction opposite to an insertion direction of an end portion of a wiring sheet, and a contact portion which is in press contact with an exposed end of a conductive path disposed at the end portion of the wiring sheet at the free end of the contact. And a sheet holding lever that holds the sheet end between the contact portion of the contact and holds the pressure contact, and the sheet holding lever is closed in a direction approaching and separating from the upper surface of the wiring sheet. The sheet press lever is pivotally supported so as to move and open, and the sheet press lever is closed and pivoted to press the upper surface of the wiring sheet at a position facing the contact portion when the sheet press lever is turned down on the upper surface of the wiring sheet. The sheet holding lever is rotated by a fixed angle from the closing rotation position to the opening rotation position to release the sheet holding state by the sheet holding surface, and the inner side of the sheet holding surface is provided with the wiring sheet. Upside In a wiring sheet connector provided with a pressurizing portion for pressing, the pressurizing portion is arranged so as to have a pressurizing start point at a position deviated inward from the contact portion of the contact, and the open rotation position of the sheet pressing lever is set. With the rotation from the position to the closing rotation position, the free pressing portion moves while pressing the upper surface of the sheet from the pressing start point inside the contact portion to the pressing end point inside the contact portion, and the lever closes. A connector for a wiring sheet, wherein the sheet pressing surface is shifted to the sheet pressing position when the connector is turned down to a rotation position. 2. The sheet holding lever is rotated by a fixed angle from a closed rotation position to an open rotation position within a rotation angle of 90 degrees or less, and is prevented from further rotation at the open rotation position. 2. The wiring sheet connector according to claim 1, further comprising a rotation inhibiting means for inhibiting rotation of the sheet holding lever from the closed position.