JP5203029B2 - Electrical connector - Google Patents

Description

  The present invention relates to an electrical connector provided with a plug connector and a receptacle connector used in an electric / electronic device such as a cellular phone, and particularly when a small number of plug connectors and a receptacle connector are fitted to each other. The present invention relates to a structure capable of obtaining a low profile without causing damage to the respective contacts even when the mating force is obtained and they are obliquely fitted.

In general, two connectors (for example, a plug connector and a receptacle connector) are used to connect the substrates. The two connectors mainly include a plurality of contacts (for example, plug contacts and receptacle contacts) and an insulator (for example, a block and a housing) made of an electrically insulating material that holds and arranges the contacts. The two connectors are connected to the substrate by soldering or the like. The contact of one of the connectors is exposed from the insulator, and the contact may be deformed depending on the manner of fitting.
The present applicant has previously proposed Patent Document 1 (Japanese Utility Model Publication No. 5-69873) as a connector having a structure for preventing contact deformation during oblique fitting, and Patent Document 2 (Japanese Patent Application No. 2005-347993) has also previously been proposed. is suggesting.
According to the summary of Japanese Utility Model Laid-Open No. 5-69873, the conventional rectangular multi-pole connector is such that the block of the plug fits into the enclosure of the socket. In order to solve this problem, the socket block 50 is formed in a substantially square block shape, tensions 52 and 53 are provided at both ends thereof, and a thickness c of 53>d> 52, Further, the enclosure of the plug is composed of two plate-like members 20 and 21, and one of the enclosures 20 has a length that fits between the tensions 52 of the block 50, and the other 21 has a length that fits between the tensions 53. The interval b between the blocks 20 and 21 is such that the portion of the block 50 excluding the tensions 52 and 53 can be fitted perfectly. As a result, the width a of the block 50> the interval b between the enclosures 20 to 21. Not be inserted 50 obliquely connector is disclosed such no risk of misconnection the length of the enclosure 20, 21 is different. By the way, the utility model registration request in Japanese Utility Model Publication No. 5-69873 is in the scope of claim for the plug side connector provided with a protective enclosure for the contact on the base holding and fixing the plurality of contacts, and holding the plurality of contacts. A set of connectors consisting of a socket-side connector provided with a block in which a hole for receiving the contact is provided in a fixed base, and the right and left thicknesses at the left and right of the longitudinal end of the block of the socket-side connector There is disclosed a connector in which tensions having different tastes are provided, and the enclosure of the plug-side connector has a length corresponding to the thickness dimension of the tension provided at both ends of the socket-side block. According to the summary of Japanese Patent Application No. 2005-347993, an object of the present invention is to provide an electrical connector capable of reducing the height of an electrical connector and preventing oblique fitting, and the plug 20 includes a contact 24 and a block 22, and the contact 24 has a width. Protruding walls 32 that are higher than the upper surface 38 of the contact 24 are formed on both sides in the longitudinal direction of the block 22, and a locking recess 34 that locks the receptacle 50 is provided between the contacts 24. The receptacle 50 includes a contact 54 and a housing 52. The contact 54 is disposed so as to face both sides in the width direction, and the housing 52 is provided with engaging convex portions 64 that engage with the locking concave portions 34. Is provided with an engaging groove 66 into which the convex wall 68 and the protruding wall 32 enter, and the elastic member upper surface 70 is provided between the longitudinal contacts 54. An electrical connector having a structure in which a high side wall A69 and a side wall B71 that is continuous with the side wall A69 and that is higher than the contact portion upper surface 73 is provided, and the height of the convex wall 68 is higher than the upper surface 70 of the elastic portion of the contact Yes. Incidentally, in the scope of claims of Japanese Patent Application No. 2005-347993, as claimed in claim 1, in the electrical connector in which the plug connector and the receptacle connector are detachably fitted, the plug connector has a contact portion that contacts the receptacle contact. A plurality of plug contacts having a fixed portion held by the block and a connecting portion connected to the substrate; and a block in which the plug contacts are held and arranged, and the plug contacts are arranged to face both sides in the width direction. A protruding wall higher than the upper surface of the plug contact is formed on both sides in the longitudinal direction of the block, and a locking recess for engaging with the receptacle connector is provided between the opposing plug contacts, and the receptacle connector Contact portion and elastic portion that contact the plug contact A plurality of receptacle contacts each having a fixed portion held by the housing and a connection portion connected to the substrate; and a housing in which the receptacle contacts are held and arranged, and the receptacle contacts are arranged to face both sides in the width direction. The housing is provided with engaging projections that engage with the locking recesses, and convex walls are formed on both sides in the longitudinal direction, and engaging grooves into which the protruding walls enter are provided on both sides in the longitudinal direction. A side wall A higher than the upper surface of the elastic part of the receptacle contact and a side wall B higher than the upper surface of the contact part of the receptacle contact are provided between the receptacle contacts in the longitudinal direction, and the convex wall Is higher than the upper surface of the elastic part of the receptacle contact, and the plug connector and the receptacle connector When the connector is fitted, the plug contact and the receptacle contact are not brought into contact with each other until completely fitted, and the plug connector and the receptacle connector according to claim 2, wherein When inserted obliquely, the protruding wall of the plug connector and the convex wall and side wall A of the receptacle connector or the engaging convex part and the side wall B are in contact with each other, thereby preventing erroneous fitting and the block. The electrical connector according to claim 1, wherein the plug contact and the receptacle contact are not deformed so as not to contact the receptacle contact and so that the housing does not contact the plug contact. The height of the protruding wall from the upper surface of the plug contact 0.1 to 0.3 mm higher, the height of the convex wall and the side wall A is 0.02 to 0.1 mm higher than the upper surface of the elastic part of the receptacle contact, and the height of the side wall B is set to the height of the receptacle contact. It is 0.02 to 0.1 mm higher than the upper surface of the contact portion, and the relationship between the height of the engaging convex portion and the height of the upper surface of the contact portion of the receptacle contact is -0.2 to 0.3 mm. The electrical connector according to claim 1 or 2, wherein the block of the plug connector is provided with engaging portions on both sides in the longitudinal direction and on both sides in the width direction, and the housing of the receptacle connector is provided in the engaging groove. 4. A concave portion that engages with the engaging portion is provided on both sides in the width direction of the frame, and when engaged, the engaging portion enters the concave portion to give a click feeling. One of them Electrical connector or the like according is disclosed.

  In recent years, as the size of electrical connectors has been reduced, the number of cores has also been reduced. When the number of cores is 20 cores or less, there has been a problem that the core is pulled out with a pulling force of about 100 to 300 gf. In the structures shown in Patent Document 1 and Patent Document 2, generally, the pulling force between the connectors is determined by the number of cores to which the pulling force per contact is applied. That is, in the case of 20 cores, 15 (gf / 1 piece) × 20 (pieces) = 300 (gf).

  The present invention has been made in view of such conventional problems, and it is an object of the present invention to provide an electrical connector capable of ensuring a sufficient holding force even with a small number of cores and obtaining a stable connection.

The object is the electrical connector 10 in which the plug connector 20 and the receptacle connector 50 are detachably fitted, and the first contact portion 26 is in contact with the receptacle contact 54 as a counterpart. And a plurality of plug contacts 24 disposed so as to face both sides in the width direction and having the first fixing portion 28 held by the block 22 and the first connection portion 30 connected to the substrate. The plug connector 20 having the blocks 22 arranged, the second contact portion 56 that contacts the plug contact 24, the second fixing portion 58 held by the housing 52, and the second connection portion 60 connected to the substrate. And a plurality of receptacle contacts 54 arranged to face both sides in the width direction and the receptacle contacts 5 And the receptacle connector 50 having a housing 52 provided with a fitting port 12 into which the plug connector 20 is inserted. A locking recess 34 that engages with the receptacle connector 50 is provided between the plug contacts 24 that are opposed to each other, and the housing 52 is engaged with the locking recess 34. In the electrical connector 10 in which the convex portions 64 are provided, the convex walls 68 are formed on both sides in the longitudinal direction, and the engaging grooves 66 into which the projecting walls 32 enter are provided on both sides in the longitudinal direction, the first of the plug contacts 24 is provided. The contact portion 26 is provided with a recess 36 into which the second contact portion 56 of the receptacle contact 54 is inserted, and a longitudinal pipe is provided. In the direction of both ends, and the receptacle contacts 54 of four at least face each other symmetrically with respect to the center of the electrical connector 10, and a second receptacle contact 55 having an engaging contact portion 80 for engaging contact with the concave portion 36 The engagement contact portion 80 of the second receptacle contact 55 is formed into a convex shape by punching, the second contact portion 56 of the receptacle contact 54 is bent into a curved shape by bending, and the engagement of the second receptacle contact 55 is performed. The electrical connector 10 is characterized in that the mating contact portion 80 is engaged and brought into contact with the recess 36 of the plug contact 24 to increase the pulling force of the connectors 20 and 50 and to obtain an electrical connection. Can be achieved.

The electrical connector 10 according to claim 2 is provided between the second contact portion 56 and the second fixing portion 58 of the receptacle contact 54 and between the engagement contact portion 80 and the second fixing portion 58 of the second receptacle contact 54. 2. The electrical connector according to claim 1, further comprising an elastic portion that meanders at least once.

The electrical connector 10 according to claim 3 , wherein the elastic portions of the receptacle contacts 54 and the second receptacle contacts 55 are disposed between the receptacle contacts 54 in the longitudinal direction and between the receptacle contacts 54 and the second receptacle contacts 55. A side wall A69 that is higher than the upper surface 70 and a side wall B71 that is connected to the side wall A69 and that is higher than the contact portion upper surface 73 of the receptacle contact 54 and the engagement contact portion upper surface 82 of the second receptacle contact 55 are provided. The height of the wall 68 is higher than the upper surface 70 of the elastic part of the receptacle contact 54 and the second receptacle contact 55, and when the plug connector 20 and the receptacle connector 50 are fitted together, the wall 68 is completely fitted. The plug contact 24 and the In electrical connector 10 according to claim 1 or 2, characterized in that the septum cycle contact 54 is prevented from contacting.
Further, Claim 4 electrical connector 10 according lies in claim 1, 2 or 3 electrical connector 10 according the number of cores is characterized by the use of the in the case of 20-core than the second receptacle contact 55.
Furthermore, the electrical connector 10 according to claim 5 is the electrical connector 10 according to claim 1, 2, 3 or 4 , wherein the engagement contact portion 80 is used only for a locking mechanism.
When the plug connector 20 and the receptacle connector 50 are inserted obliquely, the protruding wall 32 of the plug connector 20 and the convex wall 68 and the side wall A69 of the receptacle connector 50 or the engaging convex portion 64 and the side wall. The contact with B71 prevents erroneous fitting, prevents the block 22 from coming into contact with the receptacle contact 54, and prevents the housing 52 from coming into contact with the plug contact 24. The plug contact 24 and the receptacle The contact 54 is not deformed.

As is clear from the above description, according to the electrical connector 10 of the present invention, the following excellent effects can be obtained.
(1) As described in claim 1, the electrical connector 10 in which the plug connector 20 and the receptacle connector 50 are detachably fitted, and the first contact portion 26 is in contact with the receptacle receptacle 54 which is a counterpart. A plurality of plug contacts 24 having a first fixing portion 28 held by the block 22 and a first connection portion 30 connected to the substrate and arranged to face both sides in the width direction, and the plug contacts 24 are held and held. The plug connector 20 having the blocks 22 arranged; a second contact portion 56 that contacts the plug contact 24; a second fixing portion 58 held by the housing 52; and a second connection portion 60 connected to the substrate. And a plurality of receptacle contacts 54 disposed so as to face both sides in the width direction and the receptacle contacts 54 And a receptacle connector 50 having a housing 52 provided with a fitting port 12 into which the plug connector 20 is inserted, and protruding higher than the upper surface 38 of the plug contact 24 on both sides in the longitudinal direction of the block 22 A locking recess 34 that engages with the receptacle connector 50 is provided between the plug contacts 24 that face each other and a wall 32 is formed. The housing 52 has an engaging projection that engages with the locking recess 34. In the electrical connector 10 in which the number of cores is 20 cores or less in which the protrusion grooves 68 are formed on both sides in the longitudinal direction and the engaging grooves 66 into which the protruding walls 32 enter are provided on both sides in the longitudinal direction. The first contact portion 26 of the contact 24 is provided with a recess 36 for receiving the second contact portion 56 of the receptacle contact 54. , In both ends in the longitudinal pitch direction, and the receptacle contacts 54 of four at least face each other symmetrically with respect to the center of the electrical connector 10, the second receptacle having an engagement contact portion 80 that engages in contact with the recess 36 As the contact 55, the engaging contact portion 80 of the second receptacle contact 55 is formed into a convex shape by punching, and the second contact portion 56 of the receptacle contact 54 is bent into a curved shape by bending, so that the second receptacle contact is formed. 55. The engaging contact portion 80 of 55 is engaged and contacted by entering the recess 36 of the plug contact 24, thereby increasing the pulling force of the connectors 20 and 50 and obtaining an electrical connection. Since the electrical connector 10 is used , the electrical connector 10 does not tilt , and 500 gf even if the number of cores is 20 A pulling force between the above connectors can be obtained, and when the engagement contact portion 80 enters the recess 36 when fitted, a click feeling can be given, and a stable connection can be obtained.
(2) The electrical connector 10 according to the second aspect is provided between the second contact portion 56 and the second fixing portion 58 of the receptacle contact 54 and the engaging contact portion 80 and the second fixing portion 58 of the second receptacle contact 54. 4. The electrical connector 10 according to claim 1, wherein the elastic portion 62 meanders at least once, so that the connectors having the number of cores of 20 or more and 500 gf or more are removed. A force can be obtained, and when the engagement contact portion 80 enters the recess 36 when fitted, a click feeling can be given, and a stable connection can be obtained.
(3) In the electrical connector 10 according to claim 3, the receptacle contact 54 and the second receptacle contact 55 are disposed between the receptacle contacts 54 in the longitudinal direction and between the receptacle contact 54 and the second receptacle contact 55. A side wall A69 higher than the upper surface 70 of the elastic portion and a side wall B71 higher than the contact portion upper surface 73 of the receptacle contact 54 and the engagement contact portion upper surface 82 of the second receptacle contact 55 are provided. The height of the convex wall 68 is higher than the upper surface 70 of the elastic part of the receptacle contact 54 and the second receptacle contact 55, and when the plug connector 20 and the receptacle connector 50 are fitted together, it is completely fitted. Until the plug contact 24 5. The electrical connector 10 according to claim 1, wherein the receptacle contact 54 is prevented from coming into contact with the receptacle contact 54. Therefore, even if the number of cores is 20, the pulling force between connectors of 500 gf or more can be increased. The electrical connector 10 at the time of fitting can be made 1.0 mm or less, and when the mating is engaged, the engagement contact portion 80 can enter the concave portion 36 to give a click feeling. Further, the fitting can be prevented, both the contacts 24 and 54 are not deformed, and a stable connection can be obtained.
(4) The electrical connector 10 according to claim 4 , wherein the second receptacle contact 55 is used when the number of cores is 20 cores or less. Since the electrical connector 10 is used, it is possible to obtain a pulling force between the connectors of 500 gf or more even when the number of cores is 20, and the engagement contact portion 80 enters the concave portion 36 when fitted to provide a click feeling. Can be provided, and a stable connection can be obtained.
(5) The electrical connector 10 according to claim 5 , wherein the engaging contact portion 80 is used only for a lock mechanism. Therefore, even when the number of cores is 20, a pulling force between connectors of 500 gf or more can be obtained, and when the engagement contact portion 80 enters the recess 36 when fitted, a click feeling can be given. And a stable connection can be obtained.

An embodiment of the electrical connector 10 according to the present invention will be described with reference to FIGS. 1A is a perspective view of the receptacle connector of the present invention as viewed from the fitting port side, and FIG. 1B is a perspective view of the plug connector of the present invention as viewed from the fitting side. 2A is a cross-sectional view of the second receptacle contact portion in a state where the plug connector and the receptacle connector are fitted, and FIG. 2B is a receptacle contact portion in which the plug connector and the receptacle connector are fitted. FIG. 3A is a cross-sectional view of a receptacle connector taken along a section of a second receptacle contact, FIG. 3B is a cross-sectional view of a receptacle connector taken along a receptacle contact, and FIG. 3C is a cross-sectional view of a plug connector. FIG. 3 is a cross-sectional view taken along a plug contact portion. 4A is a perspective view of the second receptacle contact, FIG. 4B is a perspective view of the receptacle contact, and FIG. 4C is a perspective view of the plug contact. FIG. 5A is a perspective view of the housing of the receptacle connector, and FIG. 5B is a perspective view of the block of the plug connector.
The electrical connector 10 of the present invention includes a plug connector 20 and a receptacle connector 50. The plug connector 20 includes at least a block 22 and a plug contact 24. The receptacle connector 50 includes at least a housing 52, a receptacle contact 54, and a second receptacle contact. 55.

  As described in the prior art, the plug connector 20 and the receptacle connector 50 are soldered to the respective substrates, and the plug connector 20 and the receptacle connector 50 are fitted to each other so that the respective substrates are electrically connected. In this state, signals are exchanged between the substrates.

The respective components of the plug connector 20 and the receptacle connector 50 of the present invention will be described based on the drawings.
First, the components of the plug connector 20 will be described. First, the plug contact 24 will be described. The plug contact 24 is made of metal and is manufactured by a known press working. Since the material of the plug contact 24 is required to be springy or conductive, examples thereof include brass, beryllium copper, and phosphor bronze.

  The plug contact 24 has a substantially box-shaped cross section as shown in FIG. The plug contact 24 has a first contact portion 26 that contacts the receptacle contact 54 at one end, a first fixing portion 28 fixed to the block 22, and a first connection portion 30 connected to the substrate at the other end. ing. The plug contacts 24 are arranged so as to face both sides of the block 22 in the width direction. The plug contact 24 is fixed to the block 22 by press-fitting, integral molding, welding, or the like. In this embodiment, the plug contact 24 is fixed by integral molding. The first connection portion 30 is a surface mount type (SMT) in this embodiment, but may be a dip type. The first contact portion 26 may be provided with a recess 36 to provide a click feeling when the plug connector 20 and the receptacle connector 50 are fitted, and at the same time improve the contact property.

  Next, the block 22 will be described. This block 22 is an electrically insulating plastic, and is manufactured by a known technique of injection molding. The material is appropriately selected in consideration of dimensional stability, workability, cost, etc. Generally, polybutylene terephthalate is used. (PBT), polyamide (66PA, 46PA), liquid crystal polymer (LCP), polycarbonate (PC), and synthetic materials thereof.

  As shown in FIG. 5B, projecting walls 32 higher than the upper surface 38 of the plug contact 24 are formed on both longitudinal sides of the block 22. The height of the protruding wall 32 is appropriately designed in consideration of a reduction in the height of the connector and prevention of oblique fitting. The oblique fitting prevention structure will be described when all the parts have been described. The height of the protruding wall 32 is 0.1 to 0.2 mm higher than the upper surface 38 of the plug contact 24. When the height of the protruding wall 32 from the upper surface 38 of the plug contact 24 is 0.1 mm or less, the diagonal fitting cannot be prevented, and the height of the protruding wall 32 from the upper surface 38 of the plug contact 24 is 0. If it is 2 mm or more, it does not lead to a reduction in the height of the electrical connector 10 during fitting.

The block 22 is provided with a locking recess 34 for locking with the receptacle connector 50 between the plug contacts 24 facing each other. The engaging convex portion 64 of the receptacle connector 50 enters the locking concave portion 34. The size of the engaging recess 34 may be as long as the engaging protrusion 64 is inserted, and is appropriately designed in consideration of miniaturization of the connector and contact stability.
Ribs 40 are provided on both sides in the longitudinal direction of the block 22 as shown in FIG. The rib 40 enhances the positioning and fitting holding force for ensuring that the plug contact 24 and the receptacle contact 54 come into contact with each other when the receptacle connector 50 is fitted. When the receptacle connector 50 is fitted, light press-fitting is performed. The block 22 is provided with engaging portions 42 on both sides in the longitudinal direction and on both sides in the width direction. The engaging portion 42 increases the holding force when the plug connector 20 and the receptacle connector 50 are fitted. Further, a sun portion is provided on the bottom surface of the locking recess so as to increase the strength of the block 22 and improve the fluidity during molding.

  Next, the components of the receptacle connector 50 will be described. First, the receptacle contact 54 will be described. The receptacle contact 54 is made of metal and is manufactured by a known press working. Since the material of the receptacle contact 54 is required to be springy or conductive, examples thereof include brass, beryllium copper, and phosphor bronze.

  As shown in FIG. 4B, the receptacle contact 54 has a substantially inverted W shape in cross section, a second contact portion 56 that contacts the plug contact 24 at one end and a second connection that connects to the substrate at the other end. Part 60. Between the second contact portion 56 and the second connection portion 60, there is further provided an elastic portion 62 and a second fixing portion 58 fixed to the housing 52, and the second contact portion 56, the elastic portion from one end. 62, the second fixing portion 58, and the second connecting portion 60 are arranged in this order. The receptacle contacts 54 are arranged so as to face both sides of the housing 52 in the width direction. The receptacle contact 54 is fixed to the housing 52 by press-fitting or welding, and in this embodiment is fixed by press-fitting. The second connection portion 60 is a surface mount type (SMT) in this embodiment, but may be a dip type.

The second contact portion 56 of the receptacle contact 54 is curved so that it can easily enter the recess 36 of the plug contact 24. The curved shape of the receptacle contact 54 is formed by bending.
In addition, an elastic portion 62 is provided between the second contact portion 56 and the second fixing portion 58 in order to ensure an elastic length so as to obtain a stable contact during fitting. The elastic portion 62 is appropriately designed so as to satisfy such a role, and is bent once in this embodiment.

  Next, the second receptacle contact 55 will be described. The second receptacle contact 55 is made of metal and is manufactured by a known press working. Since the material of the second receptacle contact 55 is required to be springy or conductive, examples thereof include brass, beryllium copper, and phosphor bronze.

  The second receptacle contacts 55 are replaced with at least two receptacle contacts 54 that are symmetrical with respect to the center of the electrical connector 10 at both ends in the longitudinal pitch direction. In the present embodiment, in consideration of the holding force and balance, four are arranged on both ends in the longitudinal pitch direction so as to face each other.

  As shown in FIG. 4B, the second receptacle contact 55 has a substantially W-shaped cross section, and has an engagement contact portion 80 that engages with the recess 36 of the plug contact 24 at one end and an other end. And a second connection portion 60 connected to the substrate. Between the engagement contact portion 80 and the second connection portion 60, there is further provided an elastic portion 62 and a second fixing portion 58 fixed to the housing 52, and the engagement contact portion 80, elastic portion from one end. 62, the second fixing portion 58, and the second connecting portion 60 are arranged in this order. In the present embodiment, the second receptacle contact 55 is disposed so as to face both sides of the housing 52 in the longitudinal pitch direction. The second receptacle contact 55 is fixed to the housing 52 by press-fitting, welding, or the like. In this embodiment, the second receptacle contact 55 is fixed by press-fitting. The second connection portion 60 is a surface mount type (SMT) in this embodiment, but may be a dip type.

The engagement contact portion 80 of the second receptacle contact 55 is a portion that enters the recess 36 of the plug contact 24 and is electrically connected by being in contact with the recess 36 portion. It has a convex shape so that it can be easily done. The convex portion of the second receptacle contact 55 is formed by punching. The size and shape of the engagement contact portion 80 are appropriately designed in consideration of such role, holding force, workability, strength, and the like. The engagement contact portion 80 may be electrically connected, but may be simply provided with a lock mechanism simply by being engaged.
In addition, an elastic portion 62 is provided between the engagement contact portion 80 and the second fixing portion 58 in order to ensure an elastic length so as to obtain a stable contact during fitting. The elastic portion 62 is appropriately designed so as to satisfy such a role, and is bent once in this embodiment.

  Next, the housing 52 will be described. The housing 52 is an electrically insulating plastic, and is manufactured by a known technique of injection molding. The material is appropriately selected in consideration of dimensional stability, workability, cost, etc. Generally, polybutylene terephthalate is used. (PBT), polyamide (66PA, 46PA), liquid crystal polymer (LCP), polycarbonate (PC), and synthetic materials thereof.

As shown in FIG. 5A, the housing 52 has a substantially box shape. In the housing 52, engagement convex portions 64 that engage with the locking concave portions 34 of the block 22 are arranged between the receptacle contacts 54 arranged so as to face both sides in the width direction, and the receptacle contacts 54 and the second receptacles. Provided between the contacts 55. When both the connectors 20 and 50 are fitted, the bottom surface of the locking recess 34 and the engaging convex portion 64 abut against each other, thereby positioning at the time of fitting. The size of the engaging convex portion 64 is appropriately designed in consideration of miniaturization and strength of the connector, contact stability of the contact, and the like. Further, an escape groove is provided at the tip of the engagement convex portion 64 as a relief of the sun portion of the block 22 of the plug connector 20.
The housing 52 is provided with an engaging groove 66 into which the protruding wall 32 of the plug connector 20 is inserted. The position and size of the engaging groove 66 may be designed as long as the protruding wall 32 of the plug connector 20 is inserted, and considering the low profile of the connector, the strength of the housing 52, and the like. In this embodiment, the engagement groove 66 is a through hole in consideration of a low profile.

The housing 52 is provided with convex walls 68 on both sides in the longitudinal direction and engaging grooves 66 into which the projecting walls 32 enter on both sides in the longitudinal direction. The height of the convex wall 68 is higher than the upper surface 70 of the elastic part of the receptacle contact 54 and the second receptacle contact 55.
Further, the side wall A69 and the side wall which are higher than the upper surface 70 of the elastic part of the receptacle contact 54 and the second receptacle contact 55 between the receptacle contacts 54 in the longitudinal direction and between the receptacle contact 54 and the second receptacle contact 55. A side wall B71 that is continuous with A69 and is higher than the contact portion upper surface 73 of the receptacle contact 54 and the engagement contact portion upper surface 82 of the second receptacle contact 55 is provided.
The height of the protruding wall 32 is 0.1 to 0.3 mm higher than the upper surface 38 of the plug contact 24, and the height of the convex wall 68 and the side wall A 69 is set to the height of the receptacle contact 54 and the second receptacle contact 55. The height of the side wall B71 is 0.02 to 0.1 mm higher than the elastic part upper surface 70, and the height of the side wall B71 is 0.02 to 0.02 from the contact part upper surface 73 of the receptacle contact 54 and the engagement contact part upper surface 82 of the second receptacle contact 55. The height of the engagement convex portion 64 and the height of the contact portion upper surface 73 of the receptacle contact 54 and the height of the engagement contact portion upper surface 82 of the second receptacle contact 55 are -0.2 to 0. 3 mm. The relationship between the height of the engaging convex portion 64 and the contact portion upper surface 73 of the receptacle contact 54 and the engagement contact portion upper surface 82 of the second receptacle contact 55 is as follows. It is desirable that the engagement convex portion 64 is somewhat higher. That is, the height of the engaging convex portion 64 exceeds 0 mm from the contact portion upper surface 73 of the receptacle contact 54 and the engagement contact portion upper surface 82 of the second receptacle contact 55. When the height of the protruding wall 32 from the upper surface 38 of the plug contact 24 is 0.1 mm or less, the diagonal fitting cannot be prevented, and the height of the protruding wall 32 from the upper surface 38 of the plug contact 24 is 0. If it is 3 mm or more, it does not lead to a reduction in the height of the electrical connector 10 during fitting. If the height of the convex wall 68 and the side wall A69 is 0.02 mm or less from the upper surface 70 of the elastic part of the receptacle contact 54 and the second receptacle contact 55, it is impossible to prevent the oblique fitting and the deformation of the contact. If the height of the convex wall 68 and the side wall A69 is 0.1 mm or more from the upper surface 70 of the elastic part of the receptacle contact 54 and the second receptacle contact 55, the height of the electrical connector 10 at the time of fitting will not be reduced. If the height of the side wall B71 is 0.02 mm or less from the contact portion upper surface 73 of the receptacle contact 54 and the engagement contact portion upper surface 82 of the second receptacle contact 55, it is possible to prevent oblique fitting and contact deformation. If the height of the side wall B71 is 0.1 mm or more from the contact portion upper surface 73 of the receptacle contact 54 and the engagement contact portion upper surface 82 of the second receptacle contact 55, the height of the electrical connector 10 during fitting is reduced. Absent. When the height of the engaging convex portion 64 is −0.2 mm or less from the contact portion upper surface 73 of the receptacle contact 54 and the engagement contact portion upper surface 82 of the second receptacle contact 55, the diagonal fitting is prevented and the contact deformation is prevented. If the height of the engaging convex portion 64 is 0.3 mm or more from the contact portion upper surface 73 of the receptacle contact 54 and the engagement contact portion upper surface 82 of the second receptacle contact 55, the electrical connector at the time of fitting Does not lead to a reduction in the height of 10.
The housing 52 is provided with recesses that engage with the engaging portions 42 on both sides in the width direction of the engaging groove 66. When the plug connector 20 and the receptacle connector 50 are fitted to each other, the recess is provided with a click feeling by the engagement portion 42 entering the recess. The size and position of the recess may be any as long as the click feeling at the time of fitting can be satisfied, and is appropriately designed in consideration of the click feeling and strength.

  Finally, the oblique fitting prevention structure will be described. If it is going to be fitted diagonally, the protruding wall 32 of the plug connector 20 is not connected to the protruding wall 68 or the side wall A69 or the engaging protruding portion 64 or the side wall B71 of the receptacle connector 50 before the contacts come into contact with each other. It will be in contact with (impact), and can not be fitted diagonally.

  As an application example of the present invention, the present invention is used in an electrical connector 10 including a plug connector 20 and a receptacle connector 50 used in an electric / electronic device such as a mobile phone. In particular, the plug connector 20 and the receptacle connector 50 are fitted to each other. In this case, a sufficient pulling force between the connectors can be obtained, and even if they are obliquely fitted, the respective contacts are not damaged, and the structure can be made low in height.

(A) It is a perspective view of the receptacle connector of this invention seen from the fitting port side. (B) It is a perspective view of the plug connector of this invention seen from the fitting side. (A) It is sectional drawing cut | disconnected in the 2nd receptacle contact part in the state which the plug connector and the receptacle connector fitted. (B) It is sectional drawing which was cross-sectional in the receptacle contact part in the state which the plug connector and the receptacle connector fitted. (A) It is sectional drawing which cut the receptacle connector in the certain 2nd receptacle contact part. (B) It is sectional drawing which cut the receptacle connector in the receptacle contact part. (C) It is sectional drawing which cut the plug connector in the certain plug contact part. (A) It is a perspective view of the 2nd receptacle contact. (B) It is a perspective view of a receptacle contact. (C) It is a perspective view of a plug contact. (A) It is a perspective view of the housing of a receptacle connector. (B) It is a perspective view of the block of a plug connector.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Electrical connector 12 Fitting port 20 Plug connector 22 Block 24 Plug contact 26 1st contact part 28 1st fixing | fixed part 30 1st connection part 32 Projection wall 34 Locking recessed part 36 Recessed part 38 Upper surface 40 Rib 42 Engaging part 50 Receptacle connector 52 Housing 54 Receptacle contact 55 Second receptacle contact 56 Second contact part 58 Second fixing part 60 Second connection part 62 Elastic part 64 Engaging protrusion 66 Engaging groove 68 Protruding wall 69 Side wall A
70 Elastic part upper surface 71 Side wall B
72 Locking part 73 Contact part upper surface 74 Insertion groove 80 Engagement contact part 82 Engagement contact part upper surface

Claims (5)

An electrical connector in which a plug connector and a receptacle connector are detachably fitted,
A plurality of first contact portions that are in contact with a receptacle receptacle that is a counterpart, a first fixing portion that is held by the block, and a first connection portion that is connected to the substrate, and that are arranged to face both sides in the width direction. The plug connector having a plug contact and a block in which the plug contact is held and arranged;
A plurality of receptacle contacts having a second contact portion that contacts the plug contact, a second fixing portion held by the housing, and a second connection portion connected to the substrate, and arranged to face both sides in the width direction; The receptacle connector having a housing in which the receptacle contacts are held and arranged and provided with a fitting port into which the plug connector is inserted;
Projecting walls higher than the upper surface of the plug contact are formed on both sides in the longitudinal direction of the block, and a locking recess for engaging with the receptacle connector is provided between the opposed plug contacts.
An electrical connector in which the housing is provided with an engaging convex portion that engages with the locking concave portion, a convex wall is formed on both sides in the longitudinal direction, and an engaging groove into which the protruding wall is inserted is provided on both sides in the longitudinal direction In
The first contact portion of the plug contact is provided with a recess for receiving the second contact portion of the receptacle contact,
The four receptacle contacts facing each other at least on both ends in the longitudinal pitch direction and symmetrical with respect to the center of the electrical connector are used as second receptacle contacts having engagement contact portions that engage and contact the recesses,
The engagement contact portion of the second receptacle contact is formed into a convex shape by punching, and the second contact portion of the receptacle contact is bent into a curved shape by bending,
An electrical connector characterized in that when the engaging contact portion of the second receptacle contact enters into the concave portion of the plug contact, the pulling force of both the connectors is increased and electrical connection is obtained. . An elastic portion that meanders at least once is provided between the second contact portion and the second fixed portion of the receptacle contact and between the engagement contact portion and the second fixed portion of the second receptacle contact. The electrical connector according to claim 1 . Between the receptacle contacts in the longitudinal direction and between the receptacle contact and the second receptacle contact, a side wall A higher than the upper surface of the elastic part of the receptacle contact and the second receptacle contact is connected to the side wall A and the side wall A The upper surface of the contact portion of the receptacle contact and the side wall B higher than the upper surface of the engagement contact portion of the second receptacle contact are provided, and the height of the convex wall is higher than the upper surfaces of the elastic portions of the receptacle contact and the second receptacle contact. And
3. The electrical connector according to claim 1, wherein when the plug connector and the receptacle connector are fitted, the plug contact and the receptacle contact are not brought into contact with each other until the plug connector is completely fitted. . The electrical connector according to claim 1, 2 or 3 , wherein the second receptacle contact is used when the number of cores is 20 cores or less. 5. The electrical connector according to claim 1 , wherein the engagement contact portion is used only for a lock mechanism.

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