JP2012238435A - Pressure-contact connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pressure-contact connector that is produced at a lower processing cost than previous models, easily made shorter in height, and not prone to a problem of short break.SOLUTION: A pressure-contact connector comprises an insulating housing having a terminal housing part 14, a movable contact 12 that is slidably housed in the terminal housing part 14, a pushing-out spring 20 energizing the movable contact 12, and a contact 13. The contact 13 integrally comprises coming-off prevention pieces 35, 35 that prevent the movable contact 12 from coming off from the insulating housing 11 by contact-stopping retaining parts 16, and a contact spring part 30 that is inserted in the terminal housing part and makes elastic contact with the movable contact. By fixing the contact 13 to the insulating housing 11, coming-off prevention of the movable contact 12 by the coming-off prevention pieces 35 and constant elastic contact of the contact spring part 30 with the movable contact 12 are enabled.

Description

  The present invention relates to a pressure contact type connector mainly used as a connector for battery connection in a small electronic device such as a cellular phone.

  2. Description of the Related Art Conventionally, a pressure contact type connector using a pin-shaped movable contact urged by a coil spring has been used as a battery connection connector of a cellular phone.

  A conventional movable contact used in this type of pressure contact type connector is a movable contact urged in a pushing direction by a coil spring 2 in a cylinder 1 having a bottomed cylindrical shape made of metal as shown in FIG. The child 3 is accommodated so that it can be freely inserted and retracted, and the tip of the pressure contact pin portion 3a of the movable contact 3 protrudes from the tip of the cylinder 1, and is pressed against the contact terminal portion of the battery by the biasing force of the coil spring 2 in the protruding direction. I try to let them.

  A bias cut surface 4 inclined with respect to the axial direction is formed on the inner end surface of the cylinder of the movable contact 3, and this surface is pressed by the coil spring 2, thereby generating a component force in a direction perpendicular to the pressing direction. As a result, the peripheral surface of the movable contact 3 is always in pressure contact with the inner surface of the cylinder 1, and current is passed through the cylinder 1 from the movable contact 3.

  However, in the pressure contact type connector using such a movable contact, the cylinder 1 and the movable contact 3 are manufactured by various machining of a lathe, a milling machine, and a press. There was a limit to miniaturization due to the limitation of

  Further, since this is used by being incorporated into a molded housing, there is a problem that the whole connector has to be bulky.

  Furthermore, since the movable contact 3 has a structure that can move in the radial direction in the cylinder 1, there is a problem that instantaneous interruption due to an external shock is likely to occur.

  As shown in FIG. 7, the movable contact 3 and the cylinder 1 that accommodates the movable contact 3 are manufactured by stamping and bending a metal plate material, and the cylinder 1 and the movable one are movable. A device has been developed in which conduction with the contact 3 is ensured by constantly pressing the elastic contact piece 5 protruding from the inner surface of the cylinder 1 against the outer peripheral surface of the movable contact 3 (for example, Patent Document 1). ).

Publication No. 2005-112200

  In the case where the cylinder and the movable contact are formed by bending the plate material as shown in FIG. 7 described above, the processing cost and the instantaneous interruption resistance against external shock are improved. Since both the inner cylinder, which is a movable contact, is manufactured from a metal workpiece and is incorporated into a molded housing, the low pressure when mounting such a pressure contact type connector in a direction parallel to the connection board is low. There was a problem that it was not possible to fully respond to the desire for height.

  The present invention has been made in view of the above-mentioned problems of the prior art, and has been made for the purpose of providing a pressure contact type connector that has a lower processing cost than that of the prior art and that can be easily reduced in height and does not cause a problem of instantaneous interruption. is there.

  The feature of the invention described in claim 1 for solving the conventional problems as described above and achieving an intended purpose is that an insulating housing having a terminal accommodating portion opened at a front end, and a front and rear in the terminal accommodating portion. A movable contact that is slidably accommodated in a direction and a rear end plate portion that is accommodated in the terminal accommodating portion and closes a rear end of the insulating housing, and the movable contact is placed on the front end surface A push spring for biasing in a more projecting direction; and a contact formed by a conductive metal plate fixed to the outside of the insulating housing, the contact being a retaining portion formed on the movable contact A slip-off prevention piece that prevents the movable contact from coming out of the insulating housing, a contact spring portion that is inserted into the terminal accommodating portion and elastically contacts the movable contact, and a connection base A board connecting terminal portion connected to a plate is integrally formed, and the contact is fixed to the insulating housing in a state where the push spring and the movable contact are inserted into the terminal accommodating portion of the insulating housing. Therefore, the movable contact is prevented from being removed by the retaining prevention piece and the contact spring portion is always in elastic contact with the movable contact.

  According to a second aspect of the present invention, in addition to the configuration of the first aspect, the contact includes a flat top plate and a side surface of the insulating housing that is bent downward from a side edge of the top plate. The contact spring portion is formed by cutting and raising a part of the top plate toward the terminal accommodating portion, and the side plate projects from the side surface portion of the insulating housing. It has an engaging hole that engages with the mating protrusion, and the contact is fixed to the insulating housing so as to be immovable in the vertical direction by the engagement of the engaging protrusion and the engaging hole. is there.

  According to a third aspect of the present invention, in addition to the configuration of the second aspect, the contact includes a rear end plate bent inward from the rear edge of the side plate, and the inner edge of the rear end plate includes: An engaging protrusion is provided to engage with an engaging portion formed on the outer edge of the protrusion protruding from the rear surface of the insulating housing.

  According to a fourth aspect of the invention, in addition to the configuration of the second or third aspect, the board connection terminal portion is formed at a lower edge portion of the side plate.

  According to a fifth aspect of the present invention, in addition to the structure of the second, third, or fourth aspect, the retaining portion is formed in a shape protruding outward from a side edge of the movable contact to prevent the slipping out. The piece is formed in a shape in which the front edge of the side plate is bent inward, and by fixing the contact to the insulating housing, the opening outer portion of the terminal accommodating portion is closed by the pull-out prevention piece. It is in that.

  According to a sixth aspect of the present invention, in addition to the structure of the first to fourth or fifth aspects, the movable contact is formed with an inclined portion that is bent toward the front lower side on the upper surface side by bending a belt-shaped metal plate. It has been done.

  According to a seventh aspect of the present invention, in addition to the configuration of the first to fourth or fifth aspects, the movable contact is formed by bending a belt-shaped metal plate to form a U-shaped movable contact main body. is there.

  According to an eighth aspect of the present invention, in addition to the configuration of the sixth or seventh aspect, the movable contactor bends one end of the belt-shaped metal plate to form a spring receiving portion at the rear end, The tip of the pushing spring is brought into contact with the spring receiving portion.

  As described above, the pressure contact connector according to the present invention includes an insulating housing having a terminal accommodating portion opened at a front end, a movable contact accommodated in the terminal accommodating portion so as to be slidable in the front-rear direction, and the terminal accommodating. An extruding spring that is accommodated in a portion and applies a reaction force to a rear end plate portion that closes the rear end of the insulating housing and biases the movable contact in a direction protruding from the front end surface; and the insulating housing A contact formed by a conductive metal plate fixed to the outside of the movable contact, and the contact prevents a retaining portion formed on the movable contact from coming out of the insulating housing. The prevention piece to prevent, the contact spring portion inserted into the terminal accommodating portion and elastically contacting the movable contact, and the substrate connection terminal portion connected to the connection substrate are integrated. And fixing the contact to the insulating housing in a state where the push spring and the movable contact are inserted into the terminal accommodating portion of the insulating housing, thereby preventing the movable contact from being removed by the retaining prevention piece. In addition, since the contact spring portion is always elastically contacted with the movable contact, the insulating housing is combined with the function of the cylinder in the above-described prior art, so that the size can be reduced.

  In the present invention, the contact includes a flat top plate, and a side plate that covers a side surface of the insulating housing that is bent downward from a side edge of the top plate. A part of the top plate is cut and raised toward the terminal accommodating portion, and the side plate has an engagement hole that engages with an engagement protrusion protruding from the side surface of the insulating housing. The contact is fixed to the insulative housing so as to be immovable in the vertical direction by the engagement between the engagement protrusion and the engagement hole, and the contact spring portion can be easily assembled. It can be pressed against the movable contact in a constantly stable state.

  Furthermore, in the present invention, the contact includes a rear end plate bent inward from the rear edge of the side plate, and the outer edge of the protruding portion protruding from the rear surface of the insulating housing is formed on the inner edge of the rear end plate. By providing the engagement protrusion that engages with the engagement portion formed on the contact, the contact can be reliably fixed to the insulating housing.

  Furthermore, since the board connection terminal portion is formed at the lower edge of the side plate, high rigidity can be obtained with respect to the force acting in the direction of peeling from the board, and the length of the connector in the front-rear direction is shortened. Is possible.

  Further, in the present invention, the retaining portion is formed in a shape protruding outward from a side edge of the movable contact, and the slip-out prevention piece is a shape in which the front edge portion of the side plate is bent inward. By fixing the contact to the insulating housing and closing the opening outer side of the terminal accommodating portion by the pull-out prevention piece, the movable contact can be prevented with a simple structure. Can be assembled easily.

  Furthermore, in the present invention, the movable contactor can be manufactured by pressing using a plate material as a material by bending the belt-shaped metal plate material and forming an inclined portion inclined toward the front lower side on the upper surface side. Therefore, manufacturing cost can be reduced. On the other hand, the connector terminal by a shearing force acting on the upper surface of the movable contact can be obtained by guiding the connection terminal portion of the other party such as a battery at the inclined portion so that the contact terminal portion and the movable contact can be surely brought into contact with each other. Can be prevented from being damaged.

  In the present invention, the movable contact can be manufactured by pressing the plate material as a material by bending the belt-shaped metal plate material to form the U-shaped movable contact body. Cost can be reduced.

  Furthermore, in the present invention, the movable contact is formed by bending one end of the belt-shaped metal plate material to form a spring receiving portion at the rear end, and bringing the tip of the push spring into contact with the spring receiving portion. In addition, since the length of the extrusion spring made of a coil spring or the like can be shortened, the cost can be reduced along with the cost reduction of the extrusion spring, and the sliding operation of the movable contact can be stabilized.

It is a perspective view showing an example of a pressure contact type connector concerning the present invention. It is the perspective view seen from the lower side same as the above. It is an exploded perspective view same as the above. It is a longitudinal cross-sectional view same as the above. It is a longitudinal cross-sectional view which shows another example of the press-contact type connector which concerns on this invention. It is a longitudinal cross-sectional view which shows an example of the conventional press-contact type connector. It is a longitudinal cross-sectional view which shows another example of the conventional press-contact type connector.

  Next, an embodiment of the pressure contact type connector according to the present invention will be described based on the embodiment shown in FIGS. In the figure, reference numeral 10 denotes a pressure contact type connector.

  This pressure contact type connector 10 includes a movable contact 12 accommodated in an insulating housing 11 so as to be able to enter and exit, and a contact 13 which is always in contact with the movable contact 12, and the movable contact 12 is contacted with a battery or the like. The battery and the connection board are electrically connected to each other through the contact 13 connected to the connection board by being brought into pressure contact with the terminal portion.

  The insulative housing 11 is molded with an insulative resin material, and a terminal accommodating portion 14 opened at the front end is formed. The insulative housing 11 plays a role as a cylinder in the above-described prior art by accommodating the movable contact 12 in the terminal accommodating portion 14 so as to be able to enter and exit. Here, the front and rear directions refer to the protruding side of the movable contact 12 and the vertical direction refers to the height direction of the connector.

  The terminal accommodating portion 14 is formed in a square hole shape that is surrounded by the top plate portion 11a, the bottom plate portion 11b, and the left and right side plate portions 11c and 11d of the insulating housing 11, and has a rear end at the insulating housing 11. The rear end plate portion 11e is closed.

  In addition, slide grooves 15 facing in the front-rear direction opened at the front end of the insulating housing 11 are formed at left and right inner portions of the terminal housing portion 14 at intervals in the vertical direction. A slide piece 16 protruding to the side is inserted, and this slide piece 16 is guided by the slide groove 15 so that the movable contact 12 can be inserted into the terminal accommodating portion 14 from the front end opening side, and the movable contact 12 is rotated. The inside of the terminal accommodating part 14 can be moved to the front-back direction in the impossible state.

  The movable contact 12 is formed by punching and bending a conductive metallic plate material, and the contact terminal main body portion 17 is formed by bending the belt-like plate material into a U shape, and the U shape is folded back. The curved semicircular portion is a pressure contact surface 17a.

  In addition, parallel plate-like slide pieces 16 and 16 are formed outwardly projecting outward on both side edges of the rear end portions of the U-shaped parallel piece portions 18a and 18b arranged to face each other.

  Further, at the rear end of one parallel piece portion 18a, a spring receiving portion 19 having a shape bent at a right angle toward the other parallel piece portion 18b is formed, and this spring receiving portion 19 is pushed out by an extrusion spring 20 such as a coil spring. And the movable contact 12 is urged in the pushing direction.

  The push-out spring 20 is accommodated in the terminal accommodating portion 14 with its rear end abutted on the rear end plate portion 11e of the insulating housing 11 and its front end abutted on the spring receiving portion 19, thereby being movable. The contact 12 is urged in the pushing direction.

  On the other hand, the top plate portion 11 a of the insulating housing 11 is formed with an exposed groove 21 penetrating in the front-rear direction in the center portion and in the thickness direction of the top plate portion 11 a. The contact spring portion 30 is inserted into the terminal accommodating portion 14.

  The contact 13 is formed by punching and bending a conductive metallic plate material, and integrally includes a flat top plate 13a and side plates 13b and 13b that are bent downward from the side edges of the top plate 13a. However, it has a hollow box shape with an open bottom surface.

  The contact spring portion 30 is formed by cutting and raising a part of the flat top plate 13a and bending it to the inside, that is, the terminal accommodating portion 14 side, toward the front lower side (front inner side) from the fold portion 30a. A contact portion 30c is formed at the front end of the inclined elastic piece 30b.

  The contact portion 30c is formed by bending the front end portion of the elastic piece 30b upward, and the contact 13 is fixed to the insulating housing 11 so as not to be movable in the vertical direction. It is always pressed.

  The contact 13 is fixed to the insulating housing 11 by engaging the lower inner edge portion of the locking hole 31 formed in the side plate 13 b with the lower surface of the engaging protrusion 32 protruding from the side surface of the insulating housing 11. Has been made.

  The engaging protrusion 32 includes a tapered portion 32a inclined upward inward at the upper portion, and when the contact 13 is fitted and fixed in the insulating housing 11, the side plate 13b, 13b is pushed outward and can move in the vertical direction, and the engagement hole 31 is engaged with the engagement protrusion 32 at a predetermined fixed position.

  The side plate 13 b is formed with rear end plates 33, 33 that are bent inward from the rear edge, and a protrusion protruding from the rear surface of the insulating housing 11 at the inner edge of the rear end plate 33. An engaging protrusion 33a that engages with the lower edge of the engaging portion 34a formed on the outer edge of 34 is formed.

  On the other hand, on the front edge portion of the side plate 13b, there are formed slip-out prevention pieces 35, 35 that are bent inward from the front edge, and this prevention-off prevention piece 35 is the outer opening portion of the terminal accommodating portion 14, that is, the slide groove 15. , 15... Are closed.

  As a result, the slide pieces 16, 16 as the retaining portions of the movable contact 12 are held against the inner surface of the pull-out prevention piece 35, and the movable contact 12 biased by the push spring 20 is advanced from the front end of the insulating housing 11. The side protrudes so as to be able to enter and exit, and the whole does not come out.

  Further, on the lower edges of the side plates 13b and 13b, connection terminal portions 40 and 40 connected to a connection pattern formed on the connection substrate by soldering are formed in a shape protruding downward and spaced in the front-rear direction. .

  By connecting the connection terminal portion 40 to the connection pattern of the connection board by soldering, the entire connector 10 is fixed to the board side by the contact 13 so that high rigidity can be obtained with respect to the force acting in the peeling direction. It has become.

  In the pressure contact type connector 10 configured in this way, the contact 13 is fitted to the insulating housing 11 from above with the push spring 20 and the movable contact 12 inserted into the terminal accommodating portion 14 of the insulating housing 11. By engaging, the engagement holes 31 of the contact side plates 13b, 13b and the engagement protrusions 32 of the insulating housing 11 are engaged, and the engagement protrusions 33a of the rear end plate 33 are engaged with the engagement portions of the protrusions 34. The contact 13 is fixed to the insulative housing 11 by engaging with 34a.

  Accordingly, the retaining prevention pieces 35, 35 close the front end opening outer side portion of the terminal accommodating portion 14, that is, the front end opening of the slide grooves 15, 15, thereby preventing the movable contact 12 from being detached by the retaining prevention piece 35. On the other hand, the contact spring portion 30 is inserted into the terminal accommodating portion 14 through the exposed groove 21 so that the elastic contact with the movable contact 12 is always made.

  In the above-described embodiment, the movable contact 12 is processed into a U-shaped shape. However, as shown in FIG. 5, the movable contact 50 is directed to the upper front side and the front lower side. It may be formed in a shape having the inclined portion 51 inclined. In addition, the same code | symbol is attached | subjected to the structure similar to the above-mentioned Example, and description is abbreviate | omitted.

  The movable contact 50 is formed by bending a conductive band plate material, and has a shape in which the upper parallel piece 52a is bent rearward from the upper end of the inclined portion 51, and is bent rearward from the lower edge of the inclined portion 51. The lower parallel piece 52b is formed on the upper parallel piece 52a from the rear end of the lower parallel piece 52b, that is, the spring receiving portion 53 is bent upward.

  Further, slide pieces 54 and 54 projecting outward are formed on both side edges of the rear end portions of the upper and lower parallel piece portions 52a and 52b, and the slide pieces 54 are formed in the same manner as in the above-described embodiment. Is guided by the slide grooves 15 and 15 and functions as a retaining portion that is secured against the retaining prevention piece 35.

  The movable contact 50 receives the reaction force received from the back surface of the battery even when the back surface of the battery comes into contact with the surface of the inclined portion 51 when the battery or the like is mounted on the device to which the pressure contact type connector 10 is mounted. The movable contact 50 can be distributed in the direction in which the movable contact 50 is pushed in by the inclined portion 51, so that the movable contact 50 can be pushed in reliably, and damage caused by the shearing force caused by the upper surface side of the movable contact 50 coming into contact with the back surface of the battery. Can be prevented.

  Further, in the above-described embodiment, the retaining portion is formed in a shape projecting outward from both side edges of the rear end portion of the movable contact, and the retaining portion is bent inward from the front edge of the contact side plate 13b. However, they are not limited to such a configuration, and any configuration may be used as long as the retaining portion formed on the movable contact is held against the retaining prevention piece. .

  For example, a long hole facing forward and backward is formed on the upper surface of the movable contact, and a retaining prevention piece having a shape protruding downward from the front edge of the top plate of the contact is formed. The movable contact may be prevented from coming out of the insulating housing by being inserted into the inner wall and being made to abut against the retaining prevention piece with the rear edge inner edge of the elongated hole as a retaining portion.

DESCRIPTION OF SYMBOLS 10 Pressure-contact type connector 11 Insulating housing 12 Movable contact 13 Contact 14 Terminal accommodating part 15 Slide groove 16 Slide piece 17 Contact terminal main-body part 18 Parallel piece part 19 Spring receiving part 20 Pushing spring 30 Contact spring part 31 Locking hole 32 Engagement Jointing portion 33 Rear end plate 34 Projection portion 35 Pull-out prevention piece 40 Connection terminal portion 50 Movable contact 51 Inclined portion 52 Parallel piece portion 53 Spring receiving portion 54 Slide piece

Claims (8)

An insulating housing having a terminal accommodating portion opened at a front end, a movable contact accommodated in the terminal accommodating portion so as to be slidable in the front-rear direction, and a rear end of the insulating housing accommodated in the terminal accommodating portion. It is formed with a push spring that urges the movable contact in a direction protruding from the front end surface by applying a reaction force to the rear end plate portion that is closed, and a conductive metal plate fixed to the outside of the insulating housing. With contacts,
The contact includes a stopper for preventing the movable contact from coming out of the insulating housing by stopping the retaining portion formed on the movable contact, and the movable contact inserted into the terminal accommodating portion. A contact spring portion that elastically contacts with a substrate connection terminal portion connected to the connection substrate;
By fixing the contact to the insulating housing in a state where the push spring and the movable contact are inserted into the terminal housing portion of the insulating housing, the movable contact is prevented from being removed by the retaining prevention piece. A pressure contact type connector characterized in that the contact spring portion is always in elastic contact with the movable contact.   The contact includes a flat top plate and a side plate that covers a side surface of the insulating housing bent downward from a side edge of the top plate, and the contact spring portion includes a part of the top plate. The side plate is formed by cutting and raising toward the terminal accommodating portion side, and the side plate has an engagement hole that engages with an engagement protrusion protruding from a side surface of the insulating housing, and the engagement protrusion The press-contact connector according to claim 1, wherein the contact is fixed to the insulating housing so as to be immovable in the vertical direction by engagement between the portion and the engagement hole.   The contact includes a rear end plate bent inward from the rear edge of the side plate, and the contact is formed on the inner edge of the rear end plate on the outer edge of the protruding portion protruding from the rear surface of the insulating housing. The press-connecting connector according to claim 2, further comprising an engaging protrusion that engages with the mating portion.   The press-connecting connector according to claim 2 or 3, wherein the board connection terminal portion is formed at a lower edge portion of the side plate.   The retaining portion is formed in a shape protruding outward from a side edge of the movable contact, and the slip-out prevention piece is formed in a shape bent toward the inner side of the front edge portion of the side plate, and the contact The press contact type connector according to claim 2, 3 or 4, wherein an opening outer side portion of the terminal accommodating portion is closed by the pull-out prevention piece by fixing the pin to the insulating housing.   The pressure contact type connector according to claim 1, wherein the movable contact is formed with an inclined portion formed by bending a band-shaped metal plate material and inclining toward the front lower side on the upper surface side.   The pressure contact type connector according to claim 1, wherein the movable contact is formed by bending a belt-shaped metal plate material to form a U-shaped movable contact main body.   8. The movable contactor according to claim 6, wherein one end portion of the belt-shaped metal plate material is bent to form a spring receiving portion at a rear end, and a tip end of the push spring is brought into contact with the spring receiving portion. Pressure contact type connector.

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