JP2012182109A - Connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a connector capable of reliably preventing a thin plate-like connection object with a locked part projecting outward from being unintentionally drawn without breaking the locked part or a fixing metal fitting.SOLUTION: The connector comprises an insulator 20, in and from which a connection object 80 having a thin plate-like locked part 81 projecting outward on at least any side edge can be inserted and removed, and which is opposed to a circuit board CB; an engagement recess 23, which is formed on a side wall 22 of the insulator, and with and from which the locked part can be engaged and disengaged; an inserting recess 33, which is formed on the side wall and whose face on the engagement recess side is covered with the side wall; contacts 40, 50 supported on the insulator; and a fixing metal fitting 60 having a reinforcing part 62 fitted with the inserting recess and soldered on a circuit board.

Description

  The present invention relates to a connector for connecting a thin plate-like connection object such as an FPC or FFC.

Patent Document 1 is a conventional example of a connector capable of connecting a thin plate-like connection object (FPC, FFC, etc.).
This connector can insert and remove the object to be connected and is mounted on the circuit board, fixed side by side on the insulator, and electrically connected to the circuit board, and can be rotated to the insulator. And a pair of left and right fixing brackets supported on both sides of the insulator while being partially soldered to the circuit board.
A concave portion is formed on the upper surface of the side wall constituting both side portions of the insulator, and a locking surface is formed on the front surface of the concave portion. The left and right fixing brackets are supported by the insulator so as to be in contact with the outer surfaces of the left and right side walls. The fixing fitting is formed with a groove portion aligned in the left-right direction with the concave portion, and the front surface of the groove portion is a plate thickness surface aligned (continuous) with the locking surface in the left-right direction.

The connection object (flat conductor) of Patent Document 1 has locked portions that protrude outwardly on both left and right side portions. When the connection object is inserted into the insulator in a state where the actuator is located at the unlock position substantially orthogonal to the longitudinal direction of the insulator, the left and right locked parts of the connection object are viewed from above with respect to the left and right recesses and the groove part. Engage.
In this state, when the actuator is rotated to the lock position on the escape direction side of the connection target, the contact pressure between the connection target and the contact is increased by the actuator, and the connection target and the contact are conducted.
Furthermore, when a force in the escape direction is unexpectedly applied to the connection object, the left and right locked parts of the connection object are engaged with both the left and right locking surfaces (recesses) and the plate thickness surface (grooves). Therefore, it is possible to prevent unintentional dropping of the connection object from the insulator.

JP 4215265 A

However, the above connector has the following drawbacks.
That is, when an unintended force in the escape direction is applied to the connection object, the left and right locked portions intensively contact the plate thickness surfaces (groove portions) of the left and right fixing brackets with a strong force. There is a risk that the locking portion may be cut or damaged.
Furthermore, if the mounting accuracy of the fixing bracket to the insulator and the molding accuracy of the insulator and the fixing bracket drop even a little, a displacement (step) will occur between the locking surface of the insulator and the plate thickness surface of the fixing bracket. It is difficult to stabilize the holding force (prevention force) of the object to be connected (locked portion) by the locking surface) and the fixing bracket (plate thickness surface).
In addition, since the outer surface of the fixing bracket is exposed (there is no suppression by the insulator), if a force is applied to the fixing bracket from the locked portion by rotating the connection object on the plane where it is located, the fixing bracket May bend outwards.
Furthermore, since the surface of the fixing bracket on the groove side (recess side) is exposed, when the circuit board and the fixing bracket are soldered by reflow, the solder may crawl up to the plate thickness surface through the fixing bracket. In this case, the recessed portion (a part) is closed by the scooped solder, and the locked portion of the connection target cannot be fitted into the groove of the fixing bracket, so that the connection target is not unintentionally detached from the insulator. It becomes impossible to prevent.

  An object of the present invention is to provide a connector that can reliably prevent a thin plate-like connection object having a locked portion protruding outward from being pulled out unexpectedly without damaging the locked portion and the fixing bracket. There is to do.

  In the connector of the present invention, a connection object having a locked portion protruding outward at at least one of the side edges can be inserted and removed, and one surface in the thickness direction faces the circuit board. And an engagement recess formed on the side wall of the insulator, the engagement recess being detachable from the other side in the thickness direction, and the engagement recess formed on the one side surface of the side wall. Further, the insertion object is located on the escape direction side of the connection object, and the engagement recess side surface is covered with the side wall, and the connection object inserted into the insulator supported by the insulator is in contact with the connection object. And a contact that is electrically connected to the circuit board, and a fixing bracket that has a reinforcing part that fits into the insertion recess from the one surface side and is soldered to the circuit board. No .

The insertion recess may be opened at an end surface of the side wall on the escape direction side of the connection object, and the reinforcing portion may protrude from the end surface through the opening.
In this case, an inclined surface may be formed at the other end of the end surface toward the other side in the insertion direction of the connection object.

It is possible to rotate between an unlock position that is substantially orthogonal to the insertion / removal direction of the connection object and a lock position that falls in either the insertion direction or the escape direction and increases the contact pressure of the connection object and the contact. An actuator that supports the insulator and closes the engaging recess from the other side in the thickness direction when positioned at the lock position may be provided.
If comprised in this way, the contact pressure of a connection target object and a contact can be raised by rotating an actuator to the lock position side. In addition, when the actuator is rotated to the lock position, the actuator closes the engaging recess from the other side in the thickness direction, so that the locked portion of the connection object can be more reliably prevented from coming out from the engaging recess to the other side. become.

You may form the guide piece extended in the said engagement recessed part in the said fixing metal fitting.
Further, a curved surface may be formed on the guide piece so as to face the engagement recess from the other side in the thickness direction and extend to the other side in the thickness direction as it goes toward the escape direction.
If comprised in this way, when a to-be-latched part of a connection object will contact a guide piece (curved surface) when a connection target object is inserted in an insulator, a to-be-latched part will be set to the engagement recessed part side by a guide piece. Since the movement is guided, the locked portion can be easily fitted into the engaging recess.

The actuator may be formed with a retaining portion that faces the engaging recess from the other side in the thickness direction when positioned at the lock position.
Furthermore, a restraining projection located on the other side in the thickness direction from the locked portion engaged with the engaging recess may be provided on the inner surface of the engaging recess.
If comprised in this way, it will become possible to prevent more reliably that the to-be-latched part of a connection target object will come out from the engagement recessed part to the other side of the said thickness direction.

In the present invention, since the reinforcing portion of the fixing metal fitting is fitted into the insertion recess on the side wall of the insulator, the mechanical strength of the portion located on the side of the connecting object in the escape direction is higher than the engagement recess on the side wall. Accordingly, when an unintended escape force is applied to the connection target, the portion of the side wall reliably prevents the connection target from dropping from the insulator (disengaged from the engaging recess of the locked portion). it can.
Moreover, since the portion of the reinforcing portion on the engagement recess side is covered (not exposed) by the side wall (insulator), the connection object (locked) is applied even if an unintended escape force is applied to the connection object. There is no risk of cutting or breaking.
In addition, the locked portion of the connection object contacts only the side wall (the inner surface of the engaging recess) that does not affect the assembly accuracy of the fixing bracket to the insulator, and does not contact the fixing bracket (reinforcing portion). It is easy to stabilize the holding force (prevention force) of the connection object (locked portion) by the side wall. Furthermore, since the locked portion does not contact the reinforcing portion, there is no possibility that the reinforcing portion (fixing bracket) is bent.
Furthermore, since the engaging recess side portion of the reinforcing portion is covered (not exposed) by the side wall (insulator), when soldering the circuit board and the fixing bracket by reflow, the solder crawls up along the fixing bracket. However, the solder that has been scooped up is not positioned in the engaging portion. Therefore, the locked portion of the connection object cannot be fitted into the engagement recess by the scooped solder.

It is the disassembled perspective view seen from the front diagonally upper direction of the connector of one Embodiment of this invention. It is the disassembled perspective view seen from the back diagonally downward of the connector. It is the perspective view seen from the front diagonally upper direction of the connector and FPC which an actuator is located in an unlock position. It is the perspective view seen from the front diagonal upper direction when an FPC is inserted in the connector in which an actuator is located in an unlock position. It is the perspective view seen from the front diagonally upper direction of the connector and FPC when the FPC is inserted into the connector and the actuator is positioned at the lock position. It is sectional drawing which follows the VI-VI arrow line of FIG. It is a front view of a connector when an actuator is located in a locked position. It is sectional drawing which follows the VIII-VIII arrow line of FIG. It is sectional drawing which follows the IX-IX arrow line of FIG. It is sectional drawing which follows the XX arrow line of FIG. It is sectional drawing which follows the XI-XI arrow line of FIG. It is a perspective view similar to FIG. 3 of a modification. It is an enlarged plan view of the right end portion of the connector. It is an enlarged view of the XIV part of FIG. It is a right view of the connector in which an actuator is located in an unlock position. It is sectional drawing which follows the XIV-XIV arrow line of FIG. 12 when the to-be-latched part of FPC collides with the protrusion part of a fixing metal fitting when inserting FPC in an insulator. It is sectional drawing similar to FIG.

Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings. In the following description, front and rear, left and right, and up and down directions are based on the directions of arrows in the figure.
The connector 10 of the present embodiment includes an insulator 20, a first contact 40, a second contact 50, a fixing bracket 60, and an actuator 70 as large components.
The insulator 20 is formed by injection molding an insulating and heat resistant synthetic resin material. An FPC insertion groove 21 having substantially the same width as the FPC 80 is formed in the front portion of the upper surface of the insulator 20. A pair of side walls 22 located on the left and right sides of the FPC insertion groove 21 are formed on the left and right sides of the front portion of the insulator 20. An engagement recess 23 that is recessed downward is formed in the upper surface of the central portion of the left and right side walls 22, and the front end of the side wall 22 (the portion located immediately before the engagement recess 23) is an engagement protrusion. 24 is constituted. Further, in the vicinity of the left and right side portions of the bottom surface (upper surface) of the FPC insertion groove 21, support protrusions 25 that protrude inward from the left and right side walls 22 protrude upward, and the rear portion of the upper surface of the support protrusion 25 is a horizontal surface. It becomes the support plane 26 which consists of. A total of 17 first contact insertion grooves 28 extending in the front-rear direction are formed in the insulator 20. The rear part of each first contact insertion groove 28 is formed in the rear part of the insulator 20 (the part where the FPC insertion groove 21 is not formed), and the front part of each first contact insertion groove 28 is formed on the bottom surface of the FPC insertion groove 21. It is formed. The insulator 20 is formed with a total of 16 second contact insertion grooves 29 extending in the front-rear direction and positioned between adjacent first contact insertion grooves 28. The rear part of each second contact insertion groove 29 penetrates the rear part of the insulator 20 in the front-rear direction, and the front part of each second contact insertion groove 29 is formed on the bottom surface of the FPC insertion groove 21. As shown in FIG. 11, an intermediate plate portion 30 for separating the rear space of each second contact insertion groove 29 in the vertical direction is formed at the rear portion of the insulator 20. Also, upper holes 31 extending downward are recessed in the left and right sides of the upper surface of the rear portion of the insulator 20.
In the vicinity of the left and right side edges of the lower surface of the insulator 20, metal fitting fixing grooves 32 extending in the front-rear direction are recessed upward. As shown in the drawing, the front end portion of the metal fitting fixing groove 32 is an insertion concave portion 33 that extends upward and opens on the front surface of the engaging projection 24. The vicinity of the rear end of the metal fitting fixing groove 32 is a locking hole 34 that extends upward and communicates with the left and right upper holes 31. Further, an intermediate opening 35 that opens between the left and right side walls 22 and the support protrusions 25 is formed at the center in the longitudinal direction of the metal fitting fixing groove 32.

The 17 first contacts 40 in total and the 16 second contacts 50 in total are formed by progressively molding a thin plate of a copper alloy (for example, phosphor bronze, beryllium copper, titanium copper) or a Corson copper alloy having spring elasticity (stamping). ), And after the base is formed by nickel plating on the surface, gold plating is applied.
As shown in FIG. 10 and the like, the first contact 40 includes a base piece 41 constituting a rear end portion extending in the vertical direction, a fixed piece 42 extending forward from the lower end of the base piece 41, and an upper end of the base piece 41 forward. A pressing arm 44 that is elastically deformable in the up and down direction, and a contact arm 46 that is positioned between the fixed piece 42 and the pressing arm 44 and that is elastically deformable in the vertical direction and extends forward from the base piece 41 are provided. . A tail portion 43 that protrudes downward is formed at the front end portion of the fixed piece 42, and a support recess 45 is formed in the vicinity of the front end of the lower surface of the pressing arm 44. Further, a contact protrusion 47 protruding upward is formed at the front end of the contact arm 46. Further, an engaging projection 48 is provided on the upper end surface of the base piece 41 so as to project upward.
Each first contact 40 is inserted into each first contact insertion groove 28 of the insulator 20 from the front. As shown in FIG. 10, when each first contact 40 is inserted into the first contact insertion groove 28, the lower surface of the fixing piece 42 contacts the bottom surface of the corresponding first contact insertion groove 28, and the tail portion 43 is the bottom of the insulator 20. The front end is locked from the front. Further, the base piece 41 is positioned in the rear portion of the first contact insertion groove 28, and each engagement protrusion 48 bites into the ceiling surface of the rear portion of the first contact insertion groove 28. Therefore, when the first contact 40 is attached to the first contact insertion groove 28, the tail 43 and the engagement protrusion 48 restrict the back-and-forth movement of the first contact 40 relative to the first contact insertion groove 28. Further, the front portion of the pressing arm 44 is positioned in the FPC insertion groove 21, and the lower surface of the tail portion 43 is positioned below the lower surface of the insulator 20.

As shown in FIG. 11 and the like, the second contact 50 includes a base piece 51 constituting a rear end portion extending in the vertical direction, a contact arm 52 extending forward from the lower end of the base piece 51, and an upper end of the base piece 51 forward. And a holding arm 54 that extends. A contact protrusion 53 that protrudes upward is formed at the front end of the contact arm 52, and an engagement protrusion 55 protrudes upward on the upper surface in the vicinity of the base end of the contact arm 52. Further, a tail portion 56 and a rear locking portion 57 projecting downward are provided at the lower end portion of the base piece 51.
Each second contact 50 is inserted into each second contact insertion groove 29 from the rear of the insulator 20. As shown in FIG. 11, when each second contact 50 is inserted into the second contact insertion groove 29, the rear portion of the lower surface of the contact arm 52 contacts the bottom surface of the corresponding second contact insertion groove 29, and the rear locking portion 57 is The bottom end of the insulator 20 is locked from the rear. Since the rear portion of the contact arm 52 is in contact with the bottom surface of the second contact insertion groove 29, it cannot be elastically deformed in the vertical direction, but the front portion of the contact arm 52 is spaced upward from the bottom surface of the second contact insertion groove 29. Therefore, it can be elastically deformed in the vertical direction. Further, the contact protrusion 53 is located in front of the contact protrusion 47 of the first contact 40 (see FIGS. 10 and 11). Further, the base piece 51 is located in the rear part of the second contact insertion groove 29, and the engaging protrusion 55 bites into the lower surface of the intermediate plate part 30 from below. Therefore, when the second contact 50 is attached to the second contact insertion groove 29, the back and forth movement of the second contact 50 relative to the second contact insertion groove 29 is restricted by the rear locking portion 57 and the engagement protrusion 55. Further, the front portion of the pressing arm 54 is positioned in the FPC insertion groove 21, the lower surface of the tail portion 56 is positioned below the lower surface of the insulator 20, and is positioned at the same height as the lower surface of the tail portion 43.

The pair of left and right fixing brackets 60 are metal plate press-molded products, and include a base piece portion 61 extending in the front-rear direction, a reinforcing portion 62 extending upward from the front end of the base piece portion 61, and upward from the rear end of the base piece portion 61. And an intermediate protrusion 65 extending upward from the intermediate portion of the base piece portion 61. A locking projection 64 projects from the rear surface of the removal projection 63. Further, the upper surface of the intermediate protrusion 65 is an upper end support surface 66 formed of a horizontal plane, and extends to the front part of the intermediate protrusion 65 while curving upward as it goes to the front side, and the front surface forms a curved surface 68. The guide piece 67 to project is projected. A tail portion 69 projects downward from the front portion of the lower surface of the base piece portion 61.
Each fixing metal 60 is press-fitted into the left and right metal fixing grooves 32 of the insulator 20 from below. When the fixture 60 is press-fitted into the fixture fixing groove 32, the reinforcing portion 62 is press-fitted into the insertion recess 33. Further, the retaining protrusion 63 is press-fitted into the locking hole 34, and the upper part thereof is positioned in the intermediate plate part 30, and the locking protrusion 64 bites into the rear surface of the locking hole 34. Movement and downward movement are restricted. The intermediate protrusion 65 passes through the intermediate opening 35 upward, and the guide piece 67 (curved surface 68) is located in the engagement recess 23 (the upper portion of the guide piece 67 is directly above the engagement portion 23). Further, the lower surface of the tail portion 69 is positioned below the lower surface of the insulator 20 and is positioned at the same height as the lower surfaces of the tail portion 43 and the tail portion 56.

The rotary actuator 70 which is a plate-like member extending in the left-right direction is obtained by injection-molding a heat-resistant synthetic resin material using a metal mold. Rotating support shafts 71 are provided at the lower ends of the left and right side surfaces so as to extend leftward and rightward and are coaxial with each other. Near the lower end of the actuator 70, a total of 17 arm insertion through holes 72 penetrating the actuator 70 in the plate thickness direction are formed side by side in the left-right direction. A locked shaft 73 that closes the lower end of the arm insertion through hole 72 is formed. In the vicinity of the lower end portion of the back surface of the actuator 70 (the rear surface in FIGS. 1 and 2), a total of 16 arm escape recesses 74 located between adjacent arm insertion through holes 72 are provided. A total of 16 cam portions 75 are provided at the lower end portion of the portion located between the adjacent arm insertion through holes 72, and the lower portion of the surface of the actuator 70 (front surface in FIGS. 1 and 2) is flat. It is a lock holding surface 76. Further, lock stoppers (prevention portions) 77 extending leftward and rightward are projected from upper ends of the left and right sides of the actuator 70, and between the left and right rotation support shafts 71 and the lock stoppers 77. A metal escape recess 78 is formed. A pair of left and right flat lock stopper surfaces 79 are formed on the left and right sides of the surface of the actuator 70.
The actuator 70 is inserted into the FPC insertion groove 21 from the front in a state substantially orthogonal to the insulator 20 as shown in FIGS. 1 and 2, and the first contact 40 corresponding to each through hole 72 for arm insertion is provided. The pressing arm 44 is inserted to engage the supporting recess 45 with the locked shaft 73 (see FIG. 10), and the tip end portion of the pressing arm 54 of the second contact 50 corresponding to each arm escape recess 74 is inserted. (Refer to FIG. 11) In addition, by mounting the left and right rotation support shafts 71 on the upper end support surfaces 66 of the left and right fixing brackets 60, the left and right rotation support shafts 71 are rotatably attached to the insulator 20 and the fixing bracket 60 around the left and right rotation support shafts 71. It is. When the actuator 70 is attached to the insulator 20 in this way, each locked shaft 73 engages with the support recess 45 of the first contact 40, and the left and right rotation support shafts 71 are connected to the rear portion of the insulator 20 and the fixing bracket 60. Since it is located between the guide pieces 67 (see FIGS. 6 and 9), the longitudinal movement of the actuator 70 with respect to the insulator 20 and the fixture 60 is limited to a predetermined range. The left and right rotary support shafts 71 and the upper end support surface 66 restrict the downward relative movement of the actuator 70 with respect to the insulator 20 and the fixing bracket 60, and the upper portion of each of the locked shafts 73 and the ceiling surface of the support recess 45 actuate the actuator. The upward relative movement of 70 with respect to the insulator 20 and the fixture 60 is restricted. Therefore, the actuator 70 does not unexpectedly come out of the insulator 20 and the fixing bracket 60.
The actuator 70 is substantially orthogonal to the insulator 20, and the unlocking position (the position shown in FIGS. 3, 4, and 6) where the back surface of the insulator 20 contacts the rear portion of the insulator 20, and the substantially horizontal locking position (FIG. 5, 7 and the position shown in FIGS. 9 to 11).

  In order to mount the connector 10 having the above configuration on the upper surface (circuit forming surface) of the circuit board CB (see phantom lines in FIGS. 6 and 9 to 11), suction means (not shown) located above the connector 10 is used. A circuit is provided for the tail 43 of each first contact 40 and the tail 56 of each second contact 50 by adsorbing the rear upper surface of the insulator 20 (the portion where the intermediate plate 30 is not formed) and moving the suction means. A circuit pattern (not shown) coated with a predetermined amount of solder paste on the substrate CB is placed on the tail portion 69 of the left and right fixing brackets 60 and a ground pattern (not shown) coated with a predetermined amount of solder paste on the circuit substrate CB. Put it on. Then, each solder paste is heated and melted in a reflow furnace, each tail portion 43 and tail portion 56 are soldered to the circuit pattern, and each tail portion 69 is soldered to the ground pattern.

  An FPC (Flexible Printed Circuit) 80 that is an object to be connected is a thin plate-like long object that can be elastically deformed, and its thickness is above and below the cam portion 75 and the contact protrusion 47 when the actuator 70 is located at the unlock position. It is smaller than the interval and the vertical interval between the cam portion 75 and the contact protrusion 53. The FPC 80 has a laminated structure in which a plurality of thin film materials are bonded to each other, and the lower surface of the FPC 80 has a total of 17 first circuit patterns (not shown) extending linearly along the extending direction of the FPC 80 and adjacent to the FPC 80. A total of sixteen second circuit patterns located between the matching first circuit patterns and whose both end portions receded from the end portions of the first circuit patterns are formed, and the first circuit pattern and the second circuit are formed. The lower surface of the portion excluding both ends of the pattern is covered with an insulating cover layer. Further, a pair of locked portions 81 projecting outward are integrally provided on the left and right side portions of at least one end of the FPC 80 in the longitudinal direction.

When the actuator 70 of the connector 10 integrated with the circuit board CB is located at the unlock position shown in FIGS. 3, 4, and 6, the end of the FPC 80 can be inserted into the FPC insertion groove 21 of the insulator 20 from the front. It is. At this time, since the vertical interval between the cam portion 75 and the contact protrusion 47 and the vertical interval between the cam portion 75 and the contact protrusion 53 are larger than the thickness of the FPC 80, the end portion of the FPC 80 is the holding arm 44 of each first contact 40. And the contact arm 46 (contact projection 47) and between the pressing arm 54 and the contact arm 52 (contact projection 53) are smoothly inserted. Further, when the rear end surface of the locked portion 81 of the FPC 80 comes into contact with the curved surface 68 of the guide piece 67, the locked portion 81 is moved and guided to the engagement recess 23 side by the curved surface 68. The portions 81 are smoothly fitted into the corresponding engaging recesses 23 from above (see FIG. 4).
When the actuator 70 is rotated forward in this state, the upper surface of the FPC 80 is pressed downward by the cam portions 75 of the actuator 70, so that the contact protrusion 47 of each first contact 40 and the first circuit pattern of the FPC 80 are In addition, the contact protrusion 53 of each second contact 50 and the second circuit pattern are reliably in contact with each other. When the actuator 70 is rotated to the lock position shown in FIGS. 5, 7, and 9 to 11, the metal fitting escape recess 78 avoids the intermediate protrusion 65 (and the guide piece 67) of the fixing metal 60, and the lock stopper 77. Comes into contact with the upper surface of the engaging projection 24, and the lower portion of the lock stopper surface 79 (the rear portion when positioned at the lock position) contacts the support plane 26 of the support projection 25, and the upper portions of the left and right lock stopper surfaces 79 ( Since the front portion of the left and right engaging recesses 23 closes the upper surface of the left and right engaging recesses 23 and the lock holding surface 76 contacts the upper surface of the end portion of the FPC 80, each contact protrusion 47 and the first circuit pattern And the contact between each contact protrusion 53 and the second circuit pattern are maintained, and the FPC 80 is held in the locked position. Accordingly, the circuit board CB and the FPC 80 are electrically connected through the first contacts 40 and the second contacts 50. Further, the rear surface of the lock stopper 77 is located behind the rear surface of the engaging protrusion 24 (see FIG. 9).
Further, since the lock stopper 77 and the upper surface of the engagement protrusion 24 are in contact with each other (or may be opposed to each other with a gap), the actuator 70 is not easily damaged even if the actuator 70 is excessively rotated, and the reinforcing portion 62 is also effective for protection.

In this locked state, for example, when a forward external force is unexpectedly applied to the FPC 80, the left and right locked portions 81 engage with the front surfaces (rear surfaces of the engaging protrusions 24) of the corresponding engaging recesses 23. Since the reinforcing portion 62 of the fixing bracket 60 is located inside the engaging protrusion 24 of the connector 10, the mechanical strength of the portion is high. Therefore, it is possible to reliably prevent the FPC 80 from dropping from the insulator 20 (the locked portion 81 is pulled out from the engaging recess 23).
Moreover, since the rear surface of the reinforcing portion 62 is covered (not exposed) by the engaging protrusion 24 (insulator 20), the locked portion 81 is strong against the metal reinforcing portion 62 when this kind of external force is applied. There is no contact by force. Therefore, there is no possibility that the FPC 80 (the locked portion 81) is cut or damaged.
Further, the locked portion 81 of the FPC 80 contacts only the front surface of the engaging recess 23 (the rear surface of the engaging projection 24) and does not contact the reinforcing portion 62. If the rear surface of the protrusion 24 is formed to have a predetermined position and a predetermined shape, a desired holding force (preventing force of the locked portion 81) can be obtained, and the FPC 80 can be reliably pulled out at the desired position. I can stop it. Therefore, it is easier to stabilize the holding force (prevention force) of the FPC 80 (locked portion 81) than in the prior art in which the locked portion of the connection object is engaged with both the insulator and the fixture.
Further, since the locked portion 81 does not contact the reinforcing portion 62, there is no possibility that the reinforcing portion 62 (fixing bracket 60) bends when an external force is applied to the FPC 80.
Furthermore, since the rear part of the reinforcing part 62 is covered (not exposed) by the engaging protrusion 24 (insulator 20), when the circuit board CB and the fixing metal 60 are soldered by reflow, the solder travels through the fixing metal 60. Even if the solder is scooped up, the solder scooped up is not positioned in the engaging recess 23. Therefore, the locked portion 81 of the FPC 80 cannot be fitted into the engagement recess 23 by the solder that has been scooped up.
Moreover, when the actuator 70 is rotated to the lock position, the actuator 70 (lock stopper surface 79) closes the upper surface of the engagement recess 23, and the rear surface of the lock stopper 77 is located behind the rear surface of the engagement protrusion 24. When a forward external force is applied to the FPC 80, the locked portion 81 of the FPC 80 can be reliably prevented from coming out of the engaging recess 23.

  If the actuator 70 is rotated to the unlocked position so that the left and right locked portions 81 escape from the corresponding engaging recesses 23 and the FPC 80 is moved forward, the end of the FPC 80 is moved to the insulator 20. Can be taken out from.

As mentioned above, although this invention was demonstrated based on the said embodiment, this invention is not limited to the said embodiment, It can implement, giving various deformation | transformation.
For example, you may implement in the aspect of the modification shown in FIGS.
The basic configuration of the connector 10 ′ is the same as that of the connector 10, but the shapes of the FPC insertion groove 20 ′ and the fixing bracket 60 ′ are slightly different from those of the FPC insertion groove 20 and the fixing bracket 60 (the shape of the upper hole 31 is different from that of the connector 10). But the function is the same).
An inclined surface 24a extending upward from the front to the rear is formed on the upper edge portion of the front end surface of the engaging protrusion 24 ′ of the FPC insertion groove 20 ′. Further, as shown in FIG. 13, the corner portion formed between the left and right side walls 22 and the front edge portion of the main body portion 20a of the FPC insertion groove 20 ′ (the portion located between the left and right side walls 22) is a plan view. Thus, the inclined connecting portion 22a is inclined at an angle of about 45 ° with respect to the front-back direction.
At the upper end of the reinforcing part 62 ′ of the fixing metal 60 ′, a projecting part 62a extending upward after going forward is integrally projected. Therefore, when the fixing bracket 60 ′ is attached to the bracket fixing groove 32, the protruding portion 62a protrudes forward from the front end face of the engaging protruding portion 24 ′ as shown in the figure.
When the actuator 70 is positioned at the unlock position, when the end of the FPC 80 is inserted from the front into the FPC insertion groove 21 of the FPC insertion groove 20 ′, the left and right locked portions 81 of the FPC 80 are left and right. When passing through a position lower than the upper surface of the engaging projection 24 ′, the locked portion 81 collides with the protruding portion 62a as shown in FIG. 16 (does not collide with the engaging projection 24 ′). However, since the protrusion 62a (fixing bracket 60 ') made of metal has high mechanical strength, the protrusion 62a (fixing bracket 60') is not deformed even if the locked portion 81 collides violently. Therefore, the engagement protrusion 24 ′ is not deformed or damaged.
Further, since the inclined surface 24a is formed on the engaging protrusion 24 ′, the upper surface side of the engaging protrusion 24 ′ is further retracted with respect to the protruding portion 62a, so that the locked portion 81 becomes the protruding portion 62a. It can be made to contact reliably (engagement protrusion 24 'can be protected reliably).
Further, even when the FPC 80 is inserted into the FPC insertion groove 21, even if the locked portion 81 collides with the inclined surface 24a of the engaging protrusion 24 ′, the locked portion 81 extends along the inclined surface 24a. Slide smoothly backwards. In addition, since the inclined connecting portion 22a is formed in the FPC insertion groove 20, the corner portion formed between the left and right side walls 22 and the front edge portion of the main body portion 20a is perpendicular to the plan view. Compared with the FPC insertion groove 20, the mechanical strength of the FPC insertion groove 20 ′ (connection portion between the main body 20 a and the side wall 22) is higher. Therefore, even if the locked portion 81 collides with the inclined surface 24a of the engaging protrusion 24 ′, the possibility that the engaging protrusion 24 ′ is deformed or damaged is small.
As indicated by the phantom line in FIG. 15, the lower end portion of the protruding portion 62a may be extended to the same position as the lower end portion of the reinforcing portion 62 ′. With this configuration, when the end of the FPC 80 is inserted into the FPC insertion groove 21 from the front, the left and right locked portions 81 pass through a position lower than the upper surfaces of the left and right engaging protrusions 24 ′. Since the locked portion 81 reliably collides with the protruding portion 62a (does not collide with the engaging protrusion 24 ′), deformation and damage of the engaging protrusion 24 ′ can be prevented more reliably.

In addition, a holding protrusion (not shown) positioned above the locked portion 81 engaged with the engaging recess 23 may be provided on the inner surface (front surface or rear surface) of the engaging recess 23. If comprised in this way, it will become possible to prevent more reliably that the to-be-latched part 81 of FPC80 slips out from the engagement recessed part 23. FIG.
Further, when the FPC 80 has the locked portion 81 only on one side edge portion, the engagement recess 23 may be formed only on one of the left and right side walls 22 of the insulator 20.
Further, all the second contacts 50 may be constituted by the first contacts 40 after all the second contact insertion grooves 29 are changed to the first contact insertion grooves 28.
In place of the actuator 70, an insulator (not shown) that can rotate between an unlock position that is substantially orthogonal to the front-rear direction (rotates upward) and a lock position that falls backward and becomes substantially horizontal is shown. 20 (and the fixture 60) may be supported.
Furthermore, the actuator 70 may be omitted from the connector 10 after making the vertical distance between the pressing arm 44 and the contact protrusion 47 in the free state and the vertical distance between the pressing arm 54 and the contact protrusion 53 smaller than the thickness of the FPC 80. .
Further, the thin plate-like connection object may be a cable other than the FPC, for example, a flexible flat cable (FFC).

10 10 'Connector 20 20' Insulator 20a Insulator body 21 FPC insertion groove 22 Side wall 22a Inclined connection part 23 Engaging recess 24 Engaging protrusion 24a Inclined surface 25 Supporting protrusion 26 Support plane 28 First contact insertion groove 29 First 2 contact insertion groove 30 Intermediate plate part 31 Upper hole 32 Metal fitting fixing groove 33 Insertion recess 34 Locking hole 35 Intermediate opening 40 First contact 41 Base piece 42 Fixing piece 43 Tail part 44 Pressing arm 45 Supporting recess 46 Contact arm 47 Contact protrusion 48 Engagement protrusion 50 Second contact 51 Base piece 52 Contact arm 53 Contact protrusion 54 Pressing arm 55 Engagement protrusion 56 Tail part 57 Rear locking part 60 60 'Fixing bracket 61 Base piece part 62 62' Reinforcement part 62a Protruding part 63 Detent protrusion 64 Locking protrusion 65 Intermediate protrusion 66 Upper end support surface 67 Guide piece 68 Curved surface 9 tail portion 70 rotary actuator 71 rotates the support shaft 72 arm insertion through hole 73 Hikakaritomejiku 74 arm escaping recess 75 the cam portion 76 locks the holding surface 77 locks the stopper (retaining portion)
78 Recess for fitting escape 79 Lock stopper surface 80 FPC (object to be connected)
81 Locked part CB Circuit board

Claims (8)

An insulator in which a connection object having a locked portion protruding outward at at least one of the side edges in a thin plate shape can be inserted and withdrawn, and one surface in the thickness direction is opposed to the circuit board,
An engagement recess formed on a side wall of the insulator, the engaged portion being detachable from the other side in the thickness direction;
An insertion recess formed on the one side surface of the side wall, located closer to the connecting object in the escape direction than the engagement recess, and the surface on the engagement recess side covered with the side wall;
A contact that is supported by the insulator, is in contact with the connection object inserted into the insulator, and is electrically connected to the circuit board;
A fixing fitting that has a reinforcing portion that fits into the insertion recess from the one surface side, and is soldered to the circuit board;
A connector comprising: The connector according to claim 1, wherein
The insertion recess is opened at an end surface of the connection object in the escape direction on the side wall;
A connector in which the reinforcing portion is protruded from the end face through the opening. The connector according to claim 2, wherein
The connector which formed the inclined surface which goes to this other side as it goes to the insertion direction of the said connection target object in the edge part of the said other side of the said end surface. The connector according to any one of claims 1 to 3,
It is possible to rotate between an unlock position that is substantially orthogonal to the insertion / removal direction of the connection object and a lock position that falls in either the insertion direction or the escape direction and increases the contact pressure of the connection object and the contact. A connector comprising an actuator that is supported by the insulator and closes the engaging recess from the other side in the thickness direction when positioned at the lock position. The connector according to claim 4, wherein
The connector which formed the guide piece extended in the said engagement recessed part in the said fixing metal fitting. The connector according to claim 5, wherein
A connector having a curved surface formed on the guide piece so as to face the engagement recess from the other side in the thickness direction and extend toward the other side in the thickness direction toward the escape direction side. The connector according to any one of claims 4 to 6,
A connector in which a retaining portion facing the engagement recess is formed on the actuator from the other side in the thickness direction when the actuator is located at the lock position. The connector according to any one of claims 1 to 7,
A connector in which a restraining protrusion located on the other side in the thickness direction from the locked portion engaged with the engagement recess is protruded on the inner surface of the engagement recess.

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