JP4065910B2 - Flat conductor connector - Google Patents

Description

  The present invention relates to a flat conductor connector for connecting a flat conductor such as a flexible flat cable (FFC) or a flexible printed circuit board (FPC) to a printed circuit board.

Conventionally, as this type of technology, for example, there is a technology disclosed in Patent Document 1.
FIG. 13 is a cross-sectional view showing the open state of the operation member constituting the flat conductor connector according to this conventional example, and FIG. 14 is a cross-sectional view showing the closed state of the operation member.

  As shown in FIG. 13, the operation member 100 of the flat conductor connector opens the opening 111 into which the flat conductor F is inserted when positioned at the rotation limit on the front wall side of the housing 110. When the flat conductor F is inserted into the opening 111 in this state, the flat conductor F is supported by the guide surface 101 of the operation member 100. Then, as shown in FIG. 14, when the operation member 100 rotates toward the rear wall side of the housing 110, the corner portion 102 at the lower end edge of the guide surface 101 enters the opening 111, and the opening 111 narrows. . Thereby, the flat conductor F inserted into the opening 111 is pressed against the arm portion 121 of the contact terminal 120 by the corner portion 102, and is narrowed between the corner portion 102 and the protruding portion 121 a of the arm portion 121. Is electrically connected to the contact terminal 120.

JP 07-240650 A

However, the conventional flat conductor connector described above has the following problems.
The contact terminal 120 in the housing 110 is held in the housing 110 only by the engagement force between the protrusion 122 a of the upright portion 122 and the recess 112 of the housing 110. For this reason, the protrusion 122a and the recess 112 are easily disengaged due to external vibration or the like, the contact terminal 120 is loosened in the housing 110, or the housing 110 is in contact as shown by the two-dot chain line in FIG. There was a risk of pulling upward from the terminal 120. In particular, when the height of the connector is lowered, it is not possible to sufficiently secure the press-fitting allowance of the contact terminal 120 into the housing 110, and the contact terminal 120 is easily loosened and the housing 110 is easily pulled out.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a flat conductor connector that can prevent loosening of a contact terminal, removal of a housing, and the like due to external vibration.

  In order to solve the above-mentioned problems, the invention of claim 1 is directed to a housing having an upper end opening, a lid portion having an insertion port for inserting a flat conductor into the housing, and a lower portion of the lid portion. An operating member having a cam portion provided and rotatably supported by the housing so that the upper end opening can be opened and closed by the lid portion, and an upright portion contacting the rear wall of the housing, the upright portion A base part extending from the lower part of the housing to the front wall side of the housing and having its front end abutted against the front wall, extending upward from the base part so as to be able to bend toward the front wall side, and facing the upright part, and the protrusion part A flat conductor connector having a formed arm portion and a tail portion extending from the base portion to the outside of the housing, and first and second contact terminals arranged alternately in the housing. From the top of the upright part, the first contact terminal A horizontal portion that extends to the side and an inclined portion that rises toward the arm portion as it goes downward from the upright portion, and a hook portion that protrudes from the front end of the base portion is locked to the front wall. The cam portion is rotatably fitted in a portion surrounded by the upright portion, the arm portion, and the horizontal portion of the first contact terminal, and is inserted into the housing when the operation member is closed. A pressing surface that presses the inserted flat conductor toward the arm portion side of the first contact terminal, a contact surface that contacts the horizontal portion, and a corner portion that engages with the top of the inclined portion; The contact terminal has a hook portion protruding from the upper end portion of the upright portion, and is engaged with a pressure inlet formed in the upper portion of the housing, and the upper end portion is press-fitted into the pressure inlet, and the base portion With the hook part protruding from the front end of the housing locked to the front wall of the housing, It was set as the structure currently press-fitted in.

With this configuration, when the flat conductor is inserted from the insertion port in the open state of the operation member, the tip of the flat conductor enters the space surrounded by the rising portion, the horizontal portion, and the arm portion of the first contact terminal. The side surface of the flat conductor is supported by the pressing surface of the cam portion loosely fitted in this space. When the operation member is rotated, the cam portion is rotated along with this operation, and the flat conductor is pressed toward the arm portion by the pressing surface of the cam portion. When the operating member is in the closed state, the flat conductor is sandwiched between the pressing surface of the cam portion and the arm portion, and the first and second contact terminals and the flat conductor are electrically connected.
In this closed state, the contact surface of the cam portion contacts the horizontal portion of the first contact terminal, and the corner portion engages with the top portion of the inclined portion. For this reason, the cam portion receives a downward force from the horizontal portion, and receives a lateral force from the top of the inclined portion toward the arm portion. The cam portion receives a lateral force from the protrusion of the arm portion of the first contact terminal toward the inclined portion via the flat conductor. Therefore, the cam portion is held at a fixed position in a space surrounded by the upright portion, the horizontal portion, and the arm portion of the first contact terminal. Further, the front wall of the housing is locked by a hook portion protruding from the base portion of the first contact terminal. As a result, when the housing attempts to move upward, the hook portion of the base portion of the first contact terminal prevents upward movement by the locking force, and the rising portion and the horizontal portion of the first contact terminal The lid portion of the operation member integrated with the cam portion held by the arm portion applies a downward force to the housing that is about to move upward.
At the same time, the hook portion protruding from the upright portion of the second contact terminal is locked to the pressure inlet of the housing to prevent the upward movement of the housing that moves upward. The hook portion of the base portion is locked to the front wall of the housing to prevent upward movement.

  According to a second aspect of the present invention, in the flat conductor connector according to the first aspect, the tail portion of the first contact terminal and the tail portion of the second contact terminal extend to the outside of the housing opposite to each other. It was set as the structure.

  With this configuration, the pitch interval between the tail portions of the first and second contact terminals is set narrower than when the tail portions of the first and second contact terminals are extended to the same side of the housing. Can do.

  As described above, according to the flat conductor connector of the first aspect of the invention, when the housing is moved upward due to external vibration or the like, the hook portion of the base portion of the first contact terminal is moved upward. The lid portion of the operating member integral with the cam portion applies a downward force to the housing to move upward, and the hook portion of the rising portion of the second contact terminal is the pressure inlet of the housing. Since the hook portion of the base portion is locked to the front wall of the housing to prevent the upward movement, the first and second contact terminals are disposed in the housing. There is an excellent effect that it is possible to prevent the housing from being loosened or the housing from coming out upward from the first and second contact terminals.

  According to the flat conductor connector of the second aspect of the invention, the pitch interval between the tail portions of the first and second contact terminals is set so that the tail portions of the first and second contact terminals are on the same side of the housing. Since it can be set narrower than when it is extended, there is an effect that the connector itself can be miniaturized.

  The best mode of the present invention will be described below with reference to the drawings.

  FIG. 1 is a perspective view showing a flat conductor connector according to an embodiment of the present invention. 2 is a cross-sectional view taken along the line AA in FIG. 1 and shows an attached state of the auxiliary terminal. FIG. 3 is a cross-sectional view taken along the line BB in FIG. The arrangement of contact terminals is shown.

  As shown in FIG. 1, the flat conductor connector 1 includes a housing 2, a plurality of first and second contact terminals 3, 4, an operation member 5, and an auxiliary terminal 6.

As shown in FIGS. 1 and 2, the housing 2 is a case body having an upper end and a lower end opening formed by a rear wall 21, a front wall 22, and both side walls 23, 23.
The housing 2 is fixed to a substrate (not shown) by auxiliary terminals 6.
Specifically, a rectangular hole 23a and horizontal holes 23b and 23c are formed in order from the top in the side wall 23 of the housing 2, and the auxiliary terminal 6 is inserted into the rectangular hole 23a and horizontal holes 23b and 23c. That is, the auxiliary terminal 6 is formed in an approximately E shape, the base portion 61 is inserted into the horizontal hole 23c, and the intermediate horizontal portion 64 having the hook 64a is press-fitted into the horizontal hole 23b. And the upper end horizontal part 63 is fitted in the rectangular hole 23a of the housing 2, and the substantially rectangular bearing part 66 is defined. Further, a stopper 6 a is projected from the top of the auxiliary terminal 6 so as to regulate the angle of the operating member 5 in the open state.

The first and second contact terminals 3 and 4, as shown in FIG. 3, in the housing 2, is attached alternately.
4 is a cross-sectional view taken along the line CC in FIG. 1 and shows a mounting state of the first contact terminal 3, and FIG. 6 is a cross-sectional view taken along the line DD in FIG. The attachment state of the terminal 4 is shown.

As shown in FIG. 4, the first contact terminal 3 includes a base portion 31, an upright portion 32, a horizontal portion 33, and an arm portion 34, and includes a rear wall 21, a front wall 22, and a partition wall of the housing 2. 24 is press-fitted into the storage chamber 2a defined by
That is, the upright portion 32 is in pressure contact with the rear wall 21 of the housing 2, and the base portion 31 extends from the lower portion of the upright portion 32 toward the front wall 22, and the front end thereof is in pressure contact with the front wall 22. The arm portion 34 extends upward from the base portion 31 so as to be able to bend toward the front wall 22 and faces the upright portion 32. The arm portion 34 is formed with a protrusion 34 a facing the upright portion 32, and the base portion 31 is formed with a board connecting tail portion 35 extending to the outside of the front side of the housing 2. As shown in FIG. 5, a hook portion 31 a is projected from the front end of the base portion 31, and the hook portion 31 a is locked to the front wall 22.
As shown in FIG. 4, the first contact terminal 3 further extends from the upper portion of the upright portion 32 toward the front wall 22, and has a horizontal portion 33 having a protrusion 33 a facing downward at the tip. Is formed. An inclined portion 32 a that rises toward the arm portion 34 toward the lower portion of the standing portion 32 is formed below the horizontal portion 33. ,

On the other hand, as shown in FIG. 6, the second contact terminal 4 also includes a base portion 41, an upright portion 42, and an arm portion 44, as in the first contact terminal 3, and the rear wall 21 of the housing 2. Are inserted into the storage chamber 2 b defined by the front wall 22 and the partition wall 24, but the shape of the standing portion 42 is different from the standing portion 32 of the first contact terminal 3.
That is, the upright portion 42 has a shape in which the upper end portion is reduced in width, and has a hook portion 42a at the upper end portion. As shown in FIG. 7 , the upper end portion of the standing portion 42 is press-fitted into the pressure inlet 26 formed in the upper portion of the housing chamber 2 b of the housing 2, and the hook portion 42 a is locked to the pressure inlet 26.
The base portion 41 has a hook portion 41a at the front end thereof, and is the same as the base portion 31 of the first contact terminal 3 in that the hook portion 41a is locked to the front wall 22. The portion 45 extends on the opposite side of the tail portion 35, that is, on the rear outside of the housing 2.

As shown in FIGS. 4 and 6, the operation member 5 includes a lid portion 51, and a cam portion 52 and a pressing portion 53 that are integrally formed on the lower side of the lid portion 51. Is supported by the housing 2 so as to be openable and closable.
Specifically, as shown in FIG. 2, shaft portions 54 protrude from both end portions of the operation member 5, and the shaft portions 54 are loosely fitted into bearing portions 66 of the housing 2 so as to be freely rotatable. Yes. As a result, the operating member 5 is pivotally attached to the housing 2, and the lid portion 51 covers the upper end opening of the housing 2 and the closed state shown in FIGS. 4 and 6, and the lid portion 51 is the housing. 2 and the open state shown in FIG. 9 and FIG.

  As shown in FIGS. 4 and 6, the lid 51 has an insertion port 51 a for inserting the flat conductor F in the front upper surface. The insertion opening 51a is formed to be slightly wider than the thickness of the flat conductor F and has a tapered cross section.

  As shown in FIG. 4, the cam portion 52 has a substantially trapezoidal cross section, and is freely rotatable in a region surrounded by the arm portion 34, the standing portion 32, and the horizontal portion 33 of the first contact terminal 3. It is fitted. In the cam portion 52, a surface corresponding to the lower base of the trapezoid forms a pressing surface 52 a that supports the flat conductor F inserted into the housing 2. A contact surface between the upper edge of the pressing surface 52a and the upper inclined surface corresponding to one leg of the trapezoid is in contact with the protrusion 33a of the horizontal portion 33 when the operation member 5 is closed. 52b is configured. In addition, the intersecting portion of the lower inclined surface corresponding to the other leg side of the trapezoid and the surface corresponding to the upper base of the trapezoid forms a corner portion 52c that engages with the top portion 32b of the inclined portion 32a when the operation member 5 is closed. It is composed.

  Further, as shown in FIG. 6, the pressing portion 53 is formed so as to enter between the standing portion 42 and the arm portion 44 of the second contact terminal 4 from the lower side of the lid portion 51, and the insertion portion 51 a. The surface and the surface continuous with the pressing surface 52 a of the cam portion 52 constitute a pressing surface 53 a that presses the flat conductor F inserted into the housing 2 toward the arm portion 44.

Next, the operation and effect of the flat conductor connector 1 will be described.
8 is a schematic plan view showing a state where the flat conductor connector is attached to the substrate, FIG. 9 is a cross-sectional view corresponding to FIG. 4 showing the open state of the operation member, and FIG. 10 is an open view of the operation member. It is sectional drawing corresponding to FIG. 6 which shows a state.
When attaching the flat conductor connector 1 to the substrate 200, as shown in FIG. 8, the tail portions 35 and 45 of the first and second contact terminals 3 and 4 are in contact with the pad 201 of the substrate 200. The tail portion 65 of the auxiliary terminal 6 is fixed on the substrate 200.
Here, the tail portions 35, 45 of the first and second contact terminals 3, 4 extend to the opposite sides of the housing 2. For this reason, the pitch interval between the tail portions 35 and 45 can be set narrower than when the tail portions 35 and 45 are extended to the same side of the housing 2.

  In this state, as shown in FIG. 9 and FIG. 10, the operation member 5 is rotated to the front side of the housing 2 so that the lid 51 opens the upper end opening of the housing 2. Then, as shown in FIG. 9, the upper inclined surface of the cam portion 52 comes into contact with the protrusion 33 a of the horizontal portion 33 of the contact terminal 3, and the lower inclined surface of the cam portion 52 is the inclined portion 32 a of the standing portion 32 of the contact terminal. Abut. Further, the pressing portion 53 rotates integrally with the cam portion 52 and is inclined between the standing portion 42 and the arm portion 44 of the contact terminal 4 as shown in FIG. Further, as shown in FIG. 2, the front surface of the lid 51 comes into contact with the stopper 6 a of the auxiliary terminal 6, and the open state of the operation member 5 is maintained. In this state, when the flat conductor F is inserted into the insertion port 51a of the lid portion 51, the tip of the flat conductor F is located between the arm portion 34 of the first contact terminal 3 and the pressing surface of the cam portion 52, and It enters between the arm portion 44 of the second contact terminal 4 and the pressing surface 53 a of the pressing portion 53.

When the operation member 5 is rotated toward the rear wall 21 side of the housing 2 from this state, the cam portion 52 and the pressing portion 53 are integrally rotated along with the rotation operation. Then, as shown in FIGS. 11 and 12, the upper inclined surface of the cam portion 52 is pushed downward by the protrusion 33 a of the horizontal portion 33 of the first contact terminal 3, and the lower inclined surface of the cam portion 52 is The top part 32b of the inclined part 32a is climbed while contacting the inclined part 32a of the standing part 32. Accordingly, the flat conductor F is pressed against the arm portions 34 and 44 by the pressing surface 52 a of the cam portion 52 and the pressing surface 53 a of the pressing portion 53.
Then, as shown in FIG. 11, when the corner portion 52 c of the cam portion 52 rides on the top portion 32 b of the inclined portion 32 a and the contact surface 52 b comes into contact with the protrusion 33 a of the horizontal portion 33 of the first contact terminal 3. The upper end opening of the housing 2 is covered with the lid 51, and the operation member 5 is closed.
In the closed state, as shown in FIGS. 11 and 12, the flat conductor F is sandwiched between the pressing surfaces 52a and 53a of the cam portion 52 and the pressing portion 53 and the arm portions 34 and 44, and the flat conductor F and the first conductor And the second contact terminals 3 and 4 are electrically connected.

In this state, as shown in FIG. 11, when an external force f1 is applied to the housing 2 due to external vibration or the like and the housing 2 is moved upward, the cam portion 52 and the first contact terminal 3 The upward movement of the housing 2 is prevented by the cooperative action. Specifically, since the cam portion 52 is held at a fixed position in a space surrounded by the horizontal portion 33 and the arm portion 34 of the first contact terminal 3, the rear wall 21 of the housing 2 is separated from the lid portion 51. The downward force f2 (= f1) is received. As a result, the upward movement of the housing 2 is prevented by the lid portion 51. Further, a locking force f2 by the hook portion 31a of the base portion 31 acts on the external force f1 applied to the front wall 22 of the housing 2. Therefore, the housing 2 is prevented from moving upward by the lid portion 51 of the operation member 5 and the hook portions 31 a of the plurality of first contact terminals 3.
Further, the second contact terminal 4 also resists the upward movement of the housing 2. That is, as shown in FIG. 12, the locking force f2 by the hook portion 42a of the upright portion 42 acts against the external force f1 acting on the rear wall 21, and the base portion against the external force f1 acting on the front wall 22. The locking force f2 by the 41 hook part 41a works. Therefore, the housing 2 is prevented from moving upward by the hook portions 41 a and the hook portions 42 a of the plurality of second contact terminals 4.

  Thus, according to the flat conductor connector of this embodiment, when the housing 2 tries to move upward due to external vibration or the like, the lid portion 51 of the operation member 5 and the plurality of first and second contact terminals 3 and 4 prevent the housing 2 from moving upward, so that the housing 2 may be pulled out of the first and second contact terminals 3 and 4 due to external vibrations or the like, or the first and second contact terminals. 3 and 4 do not loosen in the housing 2.

It is a perspective view which shows the connector for flat conductors which concerns on one Example of this invention. It is arrow AA sectional drawing of FIG. 1, and shows the attachment state of an auxiliary terminal. FIG. 3 is a cross-sectional view taken along the line BB in FIG. It is CC sectional view taken on the line of FIG. 1, and shows the attachment state of the 1st contact terminal. It is a partial expanded sectional view which shows the latching state of the hook part of a base part, and a front wall. It is arrow DD sectional drawing of FIG. 1, and shows the attachment state of a 2nd contact terminal. It is a partial expanded sectional view which shows the latching state of the hook part of a standing part, and a pressure inlet. It is a schematic plan view which shows the attachment state to the board | substrate of the connector for flat conductors. It is sectional drawing corresponding to FIG. 4 which shows the open state of an operation member. It is sectional drawing corresponding to FIG. 6 which shows the open state of an operation member. FIG. 6 is a cross-sectional view showing an operation of preventing the housing from coming off by the operation member and the first contact terminal. It is sectional drawing which shows the prevention | prevention effect | action which prevents the housing by the 2nd contact terminal. It is sectional drawing which shows the open state of the operation member of the connector for flat conductors which concerns on a prior art example. It is sectional drawing which shows the closed state of the operation member of the connector for flat conductors which concerns on a prior art example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Connector for flat conductors, 2 ... Housing, 3 ... 1st contact terminal, 4 ... 2nd contact terminal, 5 ... Operation member, 6 ... Auxiliary terminal, 21 ... Rear wall, 22 ... Front wall, 26 ... Pressure Inlet 31, 41 ... Base part 32, 42 ... Standing part 32 a ... Inclined part 32 b ... Top part 33 ... Horizontal part 33 a ... Projection part 34, 44 ... Arm part 34 a, 44 a ... Projection part 51 DESCRIPTION OF SYMBOLS ... Lid part, 51a ... Insertion port, 52 ... Cam part, 52a ... Pressing surface, 52b ... Contact surface, 52c ... Corner | angular part, 53 ... Pressing part, 53a ... Pressing surface.

Claims (2)

A housing having an upper end opening; a lid portion having an insertion port for inserting a flat conductor into the housing; and a cam portion projecting below the lid portion; An operation member rotatably supported by the housing so that the upper end opening can be opened and closed, an upright part that contacts the rear wall of the housing, and extends from the lower part of the upright part to the front wall side of the housing A base portion whose front end is in contact with the front wall, an arm portion extending upward from the base portion so as to be deflectable toward the front wall, facing the upright portion, and having a protrusion formed thereon; and the base A flat conductor connector having first and second contact terminals alternately arranged in the housing having a tail portion extending from the portion to the outside of the housing,
The first contact terminal is
A hook having a horizontal part extending from the upper part of the upright part to the front wall side and an inclined part rising to the arm part side toward the lower part of the upright part, and protruding from the front end of the base part The part is locked into the front wall and press-fitted into the housing,
The cam part is
The flat conductor inserted in the housing is freely fitted to the portion surrounded by the upright portion, the arm portion, and the horizontal portion of the first contact terminal so that the flat conductor inserted into the housing is closed when the operation member is closed. A pressing surface that presses against the arm portion side of the terminal, an abutting surface that contacts the horizontal portion, and a corner portion that engages with the top of the inclined portion;
The second contact terminal is
With the hook portion protruding from the upper end portion of the upright portion being locked to the pressure inlet formed in the upper portion of the housing, the upper end portion is press-fitted into the pressure inlet, and the base portion In a state where the hook portion protruding from the front end is locked to the front wall of the housing, it is press-fitted into the housing.
A flat conductor connector. The flat conductor connector according to claim 1,
The tail portion of the first contact terminal and the tail portion of the second contact terminal extend to the outside of the housing opposite to each other.
A flat conductor connector.

Images