JP2010140687A - Detachable signal transmitter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a detachable signal transmitter capable of accurately determining the insertion state of an object to be connected with no large difference in the entire length of an insertion confirming contact and a signal transmission contact while the insertion confirming contact does not become conductive to an insert confirming conductive wire of the object to be connected so long as a contact for confirming the insertion of connector does not contact the surface of the object to be connected, even in the case of small connector. <P>SOLUTION: Tip part 43 of an insertion confirming contact 40 is receded relative to tip parts 33 and 38 of signal transmission contacts 30 and 35. The end part of a signal transmission conductive wire 71 is extended as far as the end edge of an object 70 to be connected to separate the end part of an insertion confirming conductive wire 72 from the end edge. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a detachable signal transmission device including a plate-like connection object and a connector into which the connection object can be inserted and removed.

Patent Document 1 discloses a connector for FFC (Flexible Flat Cable).
The FFC includes a plurality of signal transmission conductors (conductors) arranged in one direction and a pair of insertion confirmation conductors (conductors) located on both sides of the signal transmission conductor. The end extends to the edge of the surface of the FFC and is exposed at the surface of the FFC.
The connector has a plurality of contacts arranged in one direction. Of the contacts, those located at both ends are insertion confirmation terminals, and the remaining ones are signal transmission terminals that are electrically connected to the signal circuit on the circuit board. The tip of the insertion confirmation terminal and the signal transmission terminal is a contact portion that comes into contact with the end of the corresponding conductor when the FFC is inserted into the connector, and the position of the contact portion of the insertion confirmation terminal is the signal transmission. Retracted from the contact part of the terminal.
When the end portion of the FFC is inserted into the connector, the contact portion of each signal transmission terminal contacts the end portion of the corresponding signal transmission conductor of the FFC, so that a signal flows between the signal transmission conductor and the circuit board.
Further, when the FFC is completely inserted into the connector, the insertion confirmation terminal comes into contact with the insertion confirmation conductor. Therefore, when conducting a conductivity test on the insertion confirmation terminal and the corresponding insertion confirmation conductor, the inspector can electrically confirm that the FFC is completely inserted into the connector.
Japanese Patent Laid-Open No. 2001-223046

However, since the ends of all the conductive wires formed on the FFC extend to the edge of the FFC, the following problems may occur.
That is, FIG. 13 shows an incomplete insertion state, which is a stage in the middle of inserting the end portion of the FFC into the connector. At this time, the tip of the insertion confirmation terminal is not in contact with the surface of the FFC, but as shown in the figure, the tip of the insertion confirmation terminal is in contact with the end face of the insertion confirmation lead. For this reason, if the conductivity check is performed on the insertion confirmation terminal and the corresponding insertion confirmation lead, current is passed between the insertion confirmation terminal and the insertion confirmation lead, so the inspector completely inserts the FFC into the connector. I misunderstand that it has been.

Further, if the distance between the distal end portion (contact portion) of the insertion confirmation terminal and the distal end portion (contact portion) of the signal transmission terminal is shortened, the FFC is inclined with respect to the connector (FFC is parallel to each terminal). In the case where the insertion confirmation terminal is in contact with the insertion confirmation lead wire, the inspector mistakes that the FFC is completely inserted into the connector. Therefore, in order to accurately determine the insertion state of the FFC, the distance between the distal end portion of the insertion confirmation terminal and the distal end portion of the signal transmission terminal must be increased. It is very difficult to enlarge.
That is, in the case of a small connector, it is necessary to make the insertion confirmation terminal extremely short in order to secure the distance. In other words, compared with the signal transmission terminal, the spring force becomes very high and the followability (displacement) is also deteriorated, so that the FFC insertion work deterioration and the electrical reliability are greatly different.
Furthermore, since the tip of the insertion confirmation terminal is not on the FFC when incomplete insertion of the FFC can be detected, the spring force by the insertion confirmation terminal is not applied to the FFC. For this reason, the FFC holding force by the terminal is reduced compared to that at the time of complete insertion, and the terminal is easily pulled out.

  The object of the present invention is that even in a small-sized connector, the insertion confirmation contact and the insertion confirmation conductor of the connection object do not conduct and the insertion confirmation contact is not conducted unless the contact for connection confirmation of the connector contacts the surface of the connection object. It is an object of the present invention to provide a detachable signal transmission device capable of accurately determining the insertion state of a connection object without increasing the total length difference between a confirmation contact and a signal transmission contact.

  The detachable signal transmission device of the present invention includes a signal transmission conductor and an insertion confirmation conductor, a plate-like connection object in which ends of the signal transmission conductor and the insertion confirmation conductor are exposed on the surface, and a circuit board When the connection object is inserted, the signal transmission contact whose tip is in contact with the end of the signal transmission conductor when the connection object is inserted, and when the connection object is completely inserted, In a detachable signal transmission device comprising a connector having an insertion confirmation contact whose tip end retracted from the signal transmission contact comes into contact with the end of the insertion confirmation lead, the end of the signal transmission lead is It extends to the edge of the connection object, and the end of the insertion confirmation conductor is separated from the edge.

  When the distal end of the insertion confirmation contact abuts between the end edge of the surface of the connection object and the end of the insertion confirmation conductor, the distal end of the signal transmission contact is It is preferable to contact the end of the signal transmission conductor.

  It is preferable that the insertion confirmation contact and the signal transmission contact have an elastic deformation portion having the same length and the tip portion.

In the detachable signal transmission device according to the present invention, since the end of the insertion confirmation conductor is separated from the edge of the connection object, the insertion confirmation contact and the insertion confirmation contact are not in contact with the surface of the connection object. The conductor for confirming insertion of the connection object does not conduct. Therefore, even if the conductivity check is performed on the insertion confirmation contact and the insertion confirmation conductor in the incomplete insertion state where the insertion confirmation contact does not contact the surface of the connection object, the insertion confirmation contact and the insertion confirmation conductor are conductive. It is not erroneously detected that the connection object is completely inserted into the connector.
Also, since the end position of the insertion confirmation conductor and the end position of the signal transmission conductor are misaligned, the object to be connected can be connected to the connector without increasing the total length difference between the insertion confirmation contact and the signal transmission contact. When inserted deeply while being inclined, the insertion confirmation contact is not in contact with the corresponding insertion confirmation conductor. Therefore, such an incomplete insertion state can be reliably detected without increasing the total length difference between the insertion confirmation contact and the signal transmission contact.
Furthermore, since there is no need to increase the overall length difference between the insertion confirmation contact and the signal transmission contact, the insertion workability of the connection object is excellent and the electrical reliability of the insertion confirmation terminal and the signal transmission terminal is made equal. It becomes possible.

  According to the second aspect of the invention, even if the distal end portion of the insertion confirmation contact is in an incomplete insertion state in which it is in contact between the edge on the surface of the connection object and the end portion of the insertion confirmation conductor. Since pressure can be applied to the connection object from the insertion confirmation contact, the holding force of the connection object by each contact does not decrease. Therefore, it is possible to prevent the connection target from coming off even in such an incomplete insertion state.

  According to the third aspect of the present invention, since the spring properties of the elastic deformation portions of the insertion confirmation contact and the signal transmission contact are the same, the electrical reliability of the insertion confirmation terminal and the signal transmission terminal is improved. Be the same.

Hereinafter, an embodiment of the present invention will be described with reference to FIGS. In the following description, front and rear, left and right, and up and down directions are based on arrows in the figure.
The connector 10 of the present embodiment has a structure described below, and includes an insulator 20, a signal transmission contact 30, a signal transmission contact 35, an insertion confirmation contact 40, a reinforcing bracket 50, and an actuator 60 as major components. It has.
The insulator 20 is obtained by injection molding an insulating and heat-resistant synthetic resin material. A contact storage space 21 penetrating the insulator 20 in the vertical direction is formed at the longitudinal center of the insulator 20, and a total of 22 contact holding grooves 22 are formed on the front and back wall surfaces (inner surfaces) of the contact storage space 21. Are recessed side by side. Further, on both the left and right sides of the contact storage space 21, a pair of left and right metal fitting holding holes 23 penetrating the insulator 20 in the vertical direction are formed. A portion of the front wall portion of the insulator 20 corresponding to the contact storage space 21 is higher than the peripheral portion, and a pair of left and right temporary holding claws 25 project from the upper end portion of the portion. Further, end recessed portions 27 are formed on both the left and right side surfaces of the insulator 20, and a pair of front and rear upper protrusions 28 and one lower protrusion 29 are formed on the upper portion of the wall surface of the end recessed portion 27. is there.

A total of ten signal transmission contacts 30, a total of ten signal transmission contacts 35, and two insertion confirmation contacts 40 are all integrally formed by stamping. Specifically, after applying base plating (for example, nickel (Ni) plating) on a base material (for example, phosphor bronze, beryllium copper, titanium copper, stainless steel, Corson copper alloy) obtained by stamping molding, And finish plating (for example, gold plating, tin (Sn) -copper (Cu) plating, tin (Sn) -lead (Pb) plating)), both of which have elasticity and conductivity. .
The signal transmission contact 30 includes a fixed portion 31 formed at the rear portion, an elastically deformable portion 32 that is elastically deformable in the front-rear direction located in front of the fixed portion 31, and a tail portion 34 that extends forward from the lower portion. The contact part 33 which protrudes back is formed in the front-end | tip part of the elastic deformation part 32. As shown in FIG. The signal transmission contact 35 includes a fixed portion 36 formed at the rear portion, an elastically deformable portion 37 that is elastically deformable in the front-rear direction, located in front of the fixed portion 36, and a tail portion 39 that extends rearward from the lower portion. The elastic deformation portion 37 is formed with a contact portion 38 that protrudes rearward.
The contact 40 for insertion confirmation includes a fixed portion 41 formed at the rear portion, an elastically deformable portion 42 that is elastically deformable in the front-rear direction located in front of the fixed portion 41, and a tail portion 44 that extends from the lower portion toward the front and the rear. 45, and a contact portion 43 that protrudes rearward is formed at the tip of the elastic deformation portion. The overall size of the insertion confirmation contact 40 is smaller than that of the signal transmission contact 30 and the signal transmission contact 35, and the elastic deformation portion 42 of the insertion confirmation contact 40 is the elastic deformation portion 32 of the signal transmission contact 30 and the signal transmission contact. It is shorter than the elastic deformation portion 37 of the contact 35.

As shown in the drawing, the two insertion confirmation contacts 40 are accommodated in the left and right end portions of the contact accommodating space 21 from the lower end opening of the insulator 20, and the tail portion 44 and the tail portion 45 are located below the insulator 20. Yes. As shown in FIGS. 5 and 7, the fixing portion 41 and the elastic deformation portion 42 are respectively positioned in the front and rear contact holding grooves 22, and the locking protrusions formed on the base end portion of the fixing portion 41 are connected to the front and rear contacts. Since it is fitted and fixed in a through hole formed in the wall surface of the holding groove 22, the insertion confirmation contact 40 is prevented from coming off from the insulator 20.
The signal transmission contact 30 and the signal transmission contact 35 are accommodated in the contact accommodating space 21 from the lower end opening of the insulator 20 so as to be alternately arranged. The tail portion 34 of the signal transmission contact 30 and the signal transmission contact 35 are accommodated. The tail portion 39 is located below the insulator 20. As shown in FIGS. 5 and 7, the fixing portion 31 and the elastic deformation portion 32 are respectively positioned in the front and rear contact holding grooves 22, and the locking protrusions formed on the base end portion of the fixing portion 31 are used as the front and rear contacts. Fitting and fixing to the through-hole formed in the wall surface of the holding groove 22, and engaging and fixing the locking projection formed at the base end portion of the fixing portion 36 to the through-hole formed in the wall surface of the front and rear contact holding grooves 22. Therefore, the signal transmission contact 30 and the signal transmission contact 35 are prevented from coming off from the insulator 20.
When the signal transmission contact 30, the signal transmission contact 35, and the insertion confirmation contact 40 are fixed to the insulator 20 in this manner, the contact portion 33 of each signal transmission contact 30 and the contact portion 38 of the signal transmission contact 35 are On the other hand, the contact part 43 of the insertion confirmation contact 40 is located lower than the contact part 33 and the contact part 38 (see FIGS. 5 and 7). The contact part 43 is separated in the vertical direction by 0.4 mm. In this embodiment, the pitch (interval) between the adjacent contacts 30, 35, 40 is 0.5 mm.
Further, fitting protrusions 51 formed on the reinforcing metal fitting 50 are fitted and fixed to the lower surface openings of the left and right metal fitting holding holes 23 of the insulator 20.
The tail part 34 of the signal transmission contact 30 and the tail part 39 of the signal transmission contact 35 are signal circuit patterns (signal circuit, not shown) on the circuit board CB (shown in FIGS. 1 and 2 and other figures are not shown). ) And the tail portion 44 and the tail portion 45 of the insertion confirmation contact 40 are soldered to a conduction confirmation pattern (not shown) on the circuit board CB. Further, the reinforcing metal fitting 50 is soldered to a ground pattern (not shown) on the circuit board CB.

An actuator 60 which is a member formed by injection-molding a heat-resistant synthetic resin material includes an operation gripping portion 61 that constitutes the upper portion of the actuator 60 and has a receiving recess 62 at the front center portion thereof, and a lower surface of the operation gripping portion 61. A pair of side pieces 63 that hang down from the vicinity of both side portions thereof, and a pressing portion 65 and a rear hang piece 66 that face each other in the front-rear direction and hang down from portions other than both ends of the lower surface of the operation gripping portion 61. An inward engagement claw 64 projects from the opposite surface of the lower end portion of the side piece 63.
The actuator 60 is configured by inserting the left and right side pieces 63 into the left and right end recesses 27 of the insulator 20 and positioning the engaging claws 64 between the corresponding upper protrusions 28 and lower protrusions 29. 20 is detachably attached. When the left and right engaging claws 64 are positioned between the upper protrusion 28 and the lower protrusion 29, the actuator 60 is in a non-pressing position (the position shown in FIG. 1) where the lower surface of the operation grip 61 is separated from the upper surface of the insulator 20. ). When positioned at the non-pressing position, the pressing portion 65 enters the upper portion of the contact storage space 21, and the rear hanging piece 66 is positioned immediately behind the back surface of the insulator 20. On the other hand, when the actuator 60 is moved downward until the left and right engaging claws 64 get over the lower protrusion 29, the actuator 60 is in a pressing position where the lower surface of the operation grip 61 contacts the upper surface of the insulator 20 (FIG. 2). 4, 5, and 7).

An FPC (Flexible Printed Circuit) 70 that is a connection object of the present embodiment is a flat plate-like long object, and can be elastically deformed as a whole. The FPC 70 has a laminated structure, and a total of 20 signal transmission conductors 71 extending linearly along the extending direction of the FPC 70, two insertion confirmation conductors 72 positioned on both sides of the signal transmission conductor 71, and a signal An insulating cover layer 73 covering both surfaces of the transmission conductor 71 and the insertion confirmation conductor 72 excluding both ends, and both ends of the signal transmission conductor 71 and the insertion confirmation conductor 72 provided at both longitudinal ends. And an integrated end reinforcing member 74. As shown in the drawing, both ends of each of the signal transmission conductors 71 and the insertion confirmation conductors 72 are exposed, and engaging protrusions 75 project from both side edges of the end reinforcing member 74. Further, the edge of each signal transmission conductor 71 extends to the edge (lower edge) of the FPC 70, but the edge of the insertion confirmation conductor 72 is separated from the edge of the FPC 70 by 0.3 mm.
The connector 10 and the FPC 70 described above are components of the detachable signal transmission device.

Next, a procedure for connecting the FPC 70 to the connector 10 will be described.
In order to connect the FPC 70 to the connector 10, first, the actuator 60 is positioned at the non-pressing position as shown in FIG. Next, the FPC 70 disposed above the insulator 20 is lowered, the lower end portion of the FPC 70 is inserted into the receiving recess 62 of the actuator 60, and further inserted into the contact storage space 21 of the insulator 20. Then, the left and right engaging protrusions 75 provided on the end reinforcing member 74 are elastically deformed to get over the left and right temporary holding claws 25 of the insulator 20 downward, and immediately after getting over, elastically return to the free state to temporarily return the temporary holding claws. Since it is locked to the lower surface of 25, the FPC 70 is prevented from coming off (temporarily fixed) with respect to the insulator 20. When the left and right engaging protrusions 75 are prevented from being detached by the left and right temporary holding claws 25 in this way, the FPC 70 is in the fully inserted state shown in FIGS. 2, 4, and 5. The contact portion 33 of the signal transmission contact 30 and the contact portion 38 of the signal transmission contact 35 are in contact with the corresponding ends of the signal transmission conductors 71, and the contact portions 43 of the left and right insertion confirmation contacts 40 are for insertion confirmation. It contacts the end of the conductor 72. Thereafter, when the actuator 60 is pushed into the insulator 20 to the pressing position shown in FIG. 2, as shown in FIG. 5, the fixing portion 41 of the insertion confirmation contact 40, the fixing portion 31 of the signal transmission contact 30, and the signal transmission. Since the pressing portion 65 enters between the fixing portion 36 of the contact 35 and the end reinforcing member 74, the signal corresponding to the contact portion 33 of the signal transmission contact 30 and the contact portion 38 of the signal transmission contact 35 by the pressing portion 65. The contact pressure between the transmission conductors 71 is increased, and the contact pressure between the contact portions 43 of the left and right insertion confirmation contacts 40 and the corresponding insertion confirmation conductors 72 is increased.
Therefore, when a signal is sent to the signal circuit pattern of the circuit board CB or the signal transmission conductor 71 of the FPC 70, the signal circuit pattern and the signal transmission conductor are passed through the signal transmission contact 30 and the signal transmission contact 35 of the insulator 20. The signal flows during 71.
Further, if the conductivity check is performed on the continuity confirmation pattern and the insertion confirmation lead 72 on the circuit board CB, the inspector makes contact with the insertion confirmation lead 72 of the FPC 70 and the insertion confirmation contact 40 (contact portion 43). That is, it can be electrically confirmed that the FPC 70 is in the fully inserted state.

On the other hand, when the FPC 70 is inserted into the contact storage space 21 of the insulator 20 in an incomplete state, the engaging protrusion 75 of the FPC 70 cannot completely get over the temporary holding claw 25, so the end edge (end face) of the FPC 70 Is positioned slightly higher than the positions shown in FIGS.
For example, as shown in FIGS. 7 and 8, when the end edge (end surface) of the end reinforcing member 74 is in an incompletely inserted state where it abuts against the contact portion 43 of the elastic deformation portion 42 of the insertion confirmation contact 40, Although the contact portion 33 of the signal transmission contact 30 and the contact portion 38 of the signal transmission contact 35 are in contact with the corresponding ends of the signal transmission conductors 71, they correspond to the left and right insertion confirmation contacts 40 (contact portions 43). The insertion confirmation lead wire 72 is not contacted. Therefore, no current flows even if the conductivity check is performed on the continuity check pattern and the insertion check lead wire 72 of the circuit board CB (no erroneous detection that the circuit is completely inserted), and the inspector does not need to check the FPC 70. It is possible to reliably detect that the insertion confirmation lead wire 72 and the insertion confirmation contact 40 (contact portion 43) are in a non-contact state, that is, incompletely inserted.
Further, as shown in FIG. 9, the contact portion 43 of the elastic deformation portion 42 is located between the surface of the FPC 70 (end reinforcing member 74) (the end edge (end face) of the end reinforcing member 74 and the end portion of the insertion confirmation conducting wire 72). Also when the incomplete insertion state is in contact with the contact portion 40), the insertion confirmation contact 40 (contact portion 43) and the insertion confirmation conductor 72 are not in contact with each other. Therefore, no current flows even if the conductivity check is performed on the continuity confirmation pattern and the insertion confirmation lead 72, and the inspector can connect the insertion confirmation lead 72 and the insertion confirmation contact 40 (contact portion 43) of the FPC 70. You can be sure of being incompletely inserted. In addition, in the case of FIG. 9, the elastic deformation portion 42 (contact portion 43) of the insertion confirmation contact 40 exerts a contact pressure on the surface of the FPC 70 in spite of the incomplete insertion state. The holding force of the FPC 70 by 40 does not decrease. Therefore, the FPC 70 can be prevented from coming off even in such an incomplete insertion state.

Thus, according to the connector 10 and the FPC 70 of the present embodiment, the incomplete insertion state of the FPC 70 can be reliably detected.
Furthermore, the connector 10 and the FPC 70 of this embodiment can detect an incomplete insertion state as shown in FIG. FIG. 10 shows an incompletely inserted state in which the end portion of the FPC 70 is inserted deeply into the contact storage space 21 but the FPC 70 is inclined with respect to the insulator 20. Also in this case, the contact portion 33 of the signal transmission contact 30 and the contact portion 38 of the signal transmission contact 35 contact the end of the corresponding signal transmission conductor 71, but the insertion confirmation contact 40 (contact portion 43) is inserted. Since it is non-contact with respect to the confirmation conducting wire 72, it can be surely known that it is in an incompletely inserted state by conducting a conductivity test.
Even if the FPC 70 is tilted in this manner, no erroneous detection occurs because the distal end portion (contact portion 33) of the signal transmission contact 30 and the distal end portion (contact portion 38) of the signal transmission contact 35 are connected to the edge of the FPC 70 ( The connector 10 so that the linear distance (L; see FIG. 11) between the tip of the insertion confirmation contact 40 (contact portion 43) and the end edge of the corresponding insertion confirmation lead wire 72 when contacted with the end face is long. This is because the FPC 70 is designed. As a result, it is possible to detect not only the case of tilting but also the incomplete insertion state (for example, the incomplete insertion state of FIG. 8) having a large deviation from the complete insertion state.
Even when the end of the insertion confirmation lead 72 is extended to the end of the FPC 70 as in Patent Document 1, if the elastic deformation portion 42 of the insertion confirmation contact 40 is made shorter, the linear distance L can be increased. It can be shortened. However, when the difference between the length of the elastic deformation portion 32 of the signal transmission contact 30 and the length of the elastic deformation portion 37 of the signal transmission contact 35 and the length of the elastic deformation portion 42 of the insertion confirmation contact 40 is increased as described above, Since there is a large difference between the spring force of the elastic deformation portion 32 of the transmission contact 30 and the elastic deformation portion 37 of the signal transmission contact 35 and the spring force of the elastic deformation portion 42 of the insertion confirmation contact 40, the FPC 70 The insertion of the connector 10 into the connector 10 is deteriorated, and there is a large difference between the electrical reliability of the signal transmission contact 30 and the signal transmission contact 35 and the electrical reliability of the insertion confirmation contact 40. On the other hand, as in this embodiment, the difference between the length of the elastic deformation portion 32 of the signal transmission contact 30 and the length of the elastic deformation portion 37 of the signal transmission contact 35 and the length of the elastic deformation portion 42 of the insertion confirmation contact 40 is calculated. When the linear distance L is increased by shifting the end edge position of the signal transmission conductor 71 and the end edge position of the insertion confirmation conductor 72 while minimizing to a minimum, such a problem does not occur. The electrical reliability of the signal transmission contact 30 and the signal transmission contact 35 is substantially equal to the electrical reliability of the insertion confirmation contact 40.

As mentioned above, although this invention was demonstrated based on the said embodiment, this invention is not limited to this embodiment, It can implement, giving various deformation | transformation.
For example, the connection object may not be an FPC as long as it is plate-shaped, and may be, for example, an FFC (Flexible Flat Cable).
The numbers of the signal transmission contacts 30, the signal transmission contacts 35, and the insertion confirmation contacts 40 are not limited to those described above, and the installation positions of the insertion confirmation contacts 40 may not be at both ends of the contact group.
Furthermore, the insertion confirmation contact 40 may also be used as a ground contact, and the continuity confirmation pattern of the circuit board CB may also be used as a ground pattern.
Furthermore, the insertion confirmation contact may be an insertion confirmation contact 40 'shown in FIG. The insertion confirmation contact 40 ′ is provided with a recess 46 that is continuous with the base end of the elastically deforming portion 42 ′. With such a shape, although the vertical dimension of the entire contact is the same as that of the insertion confirmation contact 40, the entire length of the elastic deformation portion 42 ′ is the elastic deformation portion 32 of the signal transmission terminal 30 and the elastic deformation of the signal transmission terminal 35. Since it becomes the same as the part 37, the spring property of the elastic deformation part 42 'becomes the same as the spring property of the elastic deformation part 32 and the elastic deformation part 37. Therefore, the electrical reliability of the insertion confirmation terminal 40 ′ and the signal transmission terminals 30 and 35 can be made the same. Furthermore, the elastic deformation portion 42 ′ of the insertion confirmation contact 40 ′ is longer than the elastic deformation portion 42 of the insertion confirmation contact 40 and easily elastically deforms.

Further, a rotary actuator may be used instead of the actuator 60. Further, the actuator may be omitted by making the contact bifurcated to contact both the front and back surfaces of the connection object and making the distance between the bifurcated portions in the free state smaller than the thickness of the connection object.
Further, the connector 10 is fixed to the circuit board CB while being rotated by 90 ° from the illustrated state, and the tail portions of the signal transmission contact 30, the signal transmission contact 30, and the signal transmission contact 35 are attached to the circuit board CB. You may connect.
Further, by omitting the signal transmission contact 30 and the signal transmission contact 35 located next to the left and right insertion confirmation contacts 40, the distance between the adjacent signal transmission contact 30 and the signal transmission contact 35 is increased. The interval between the matching insertion confirmation contact 40 and the signal transmission contact 30 (or the signal transmission contact 35) may be increased. In this way, even when the connection object is inserted at an angle with respect to the connector 10, it is possible to reliably prevent the insertion confirmation contact 40 from coming into contact with the signal transmission conductor 71 and causing a short circuit.
Further, a recess may be formed on the side edge of the connection object instead of the engagement protrusion 75, and a protrusion that engages with the recess in the fully inserted state may be formed on the insulator 20 side.

It is a perspective view of a connector and FPC in which an actuator of one embodiment of the present invention is located in a non-pressing position. Similarly, it is a perspective view of the connector and FPC in which the actuator is located at the pressing position. It is a disassembled perspective view of a connector. It is a front view of the connector and FPC which an actuator is located in a press position. It is a vertical side view of the connector and FPC in a completely inserted state, (a) is sectional drawing which follows the Va-Va arrow line of FIG. 4, (b) is sectional drawing which follows the Vb-Vb arrow line, c) is a sectional view taken along the line Vc-Vc. It is a schematic plan view showing the positional relationship between each conductor of the FPC and each contact of the connector in the fully inserted state. FIG. 5 is a longitudinal side view of the connector and the FPC in an incompletely inserted state, (a) is a cross-sectional view corresponding to FIG. 5 (a), (b) is a cross-sectional view corresponding to FIG. c) is a cross-sectional view corresponding to FIG. FIG. 7 is a schematic plan view similar to FIG. 6 showing an incompletely inserted state. It is the same planar schematic diagram as FIG. 6 which shows another incomplete insertion state. It is the same planar schematic diagram as FIG. 6 which shows another incomplete insertion state. FIG. 7 is a schematic plan view similar to FIG. 6 for explaining advantages of the present invention. It is a side view of the contact for insertion confirmation of the modification of this invention. It is a vertical side view which expands and shows a part of connector and FFC of patent document 1.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Connector 20 Insulator 21 Contact accommodation space 22 Contact holding groove 23 Metal fitting holding hole 25 Temporary holding claw 27 End recessed part 28 Upper protrusion 29 Lower protrusion 30 Signal transmission contact 31 Fixing part 32 Elastic deformation part 33 Contact part (tip) Part)
34 Tail part 35 Signal transmission contact 36 Fixing part 37 Elastic deformation part 38 Contact part (tip part)
39 Tail part 40 40 ′ Insertion confirmation contact 41 Fixing part 42 Elastic deformation part 43 Contact part (tip part)
44 45 Tail portion 46 Recess 50 Reinforcing metal fitting 51 Fitting projection 60 Actuator 61 Operation gripping portion 62 Receiving recess 63 Side piece 64 Engaging claw 65 Pressing portion 66 Rear drooping piece 70 FPC (object to be connected)
71 Signal transmission conductor 72 Insertion confirmation conductor 73 Insulating cover layer 74 End reinforcement member 75 Engagement protrusion CB Circuit board

Claims (3)

A plate-like connection object comprising a signal transmission conductor and an insertion confirmation conductor, the ends of the signal transmission conductor and the insertion confirmation conductor exposed on the surface;
When the signal transmission contact that is electrically connected to the signal circuit on the circuit board and the front end of the circuit board contacts the end of the signal transmission conductor when the connection target is inserted, and the connection target is completely inserted A connector provided with an insertion confirmation contact in which a tip portion retracted from the signal transmission contact comes into contact with an end portion of the insertion confirmation conducting wire;
In a detachable signal transmission device comprising:
A detachable signal transmission device characterized in that an end of the signal transmission conductor is extended to an edge of the connection object, and an end of the insertion confirmation conductor is separated from the edge. In the detachable signal transmission device according to claim 1,
When the distal end of the insertion confirmation contact abuts between the end edge of the surface of the connection object and the end of the insertion confirmation conductor, the distal end of the signal transmission contact is A detachable signal transmission device in contact with an end of a signal transmission conductor. The detachable signal transmission device according to claim 1 or 2,
A detachable signal transmission device, wherein the insertion confirmation contact and the signal transmission contact are provided with an elastic deformation portion having the same length and the tip portion.

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