JP2009517802A - Electrical connector - Google Patents

Abstract

The present invention provides an electrical connector capable of reducing the height of the electrical connector and preventing oblique fitting.
A plug (20) includes a contact (24) and a block (22). The contact (24) is arranged so as to face both sides in the width direction, and protruding walls (32) higher than an upper surface (38) of the contact (24) are formed on both sides in the longitudinal direction of the block (22). A locking recess 34 for locking with the receptacle 50 is provided between the contacts 24. The receptacle 50 includes a contact 54 and a housing 52. The contacts 54 are arranged to face both sides in the width direction. Engaging protrusions 64 that engage with the stop recesses 34 are provided, engaging grooves 66 into which the protruding walls 68 and the protruding walls 32 enter are provided on both sides in the longitudinal direction, and the upper surface of the elastic portion is provided between the contacts 54 in the longitudinal direction. A side wall A69 higher than 70 and a side wall B71 higher than the contact portion upper surface 73 are provided continuously to the side wall A69, and the height of the convex wall 68 is contacted. Higher than the elastic portion upper surface 70 of 54.

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 mobile phone, and in particular, even when the plug connector and the receptacle connector are fitted to each other obliquely. The present invention relates to a structure in which each contact can be reduced in height without being damaged.

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 as a connector having a structure for preventing contact deformation during oblique fitting. According to the summary of Patent Document 1, the conventional rectangular multi-pole connector is such that the block of the plug is fitted into the socket enclosure, so that the contact is deformed by mistakenly inserting the plug diagonally. In order to solve this problem, the socket block 50 is formed in a substantially square block shape, tensions 52, 53 are provided at both ends thereof, a thickness c of 53>d> 52, and a plug c The enclosure is composed of two plate-like members 20, 21, one 20 having a length that fits between the tensions 52 of the block 50, and the other 21 having a length that fits between the tensions 53. The interval b of the block 50 is such that the portion of the block 50 excluding the tensions 52 and 53 can be fitted perfectly. As a result, the width 50 of the block 50 is larger than the interval b of the enclosures 20 to 21. Not be inserted, the connector is disclosed such no risk of misconnection the length of the enclosure 20, 21 is different.
Incidentally, in the scope of claim for registration of the utility model in Patent Document 1, a plug-side connector provided with a protective enclosure for the contact on a base holding and fixing a plurality of contacts, and holding and fixing a plurality of contacts. A pair of connectors comprising a socket side connector provided with a block in which a hole for accommodating the contact is provided in the base, and the left and right sides of the longitudinal end of the block of the socket side connector have different left and right thicknesses A connector is disclosed in which a tension is provided, and the enclosure of the plug-side connector has a length corresponding to the thickness of the tension provided at both ends of the socket-side block.

Japanese Utility Model Publication No. 5-69873

In recent years, as the size of electrical connectors has been reduced, there has been an increasing demand for reducing the size between boards when connecting boards. That is, there is an increasing demand for a low-profile electrical connector when the plug connector and the receptacle connector are fitted. As miniaturization of electrical connectors has progressed, it has become difficult to fit the plug connector and the receptacle connector, and the connectors are often fitted diagonally. When the oblique fitting is performed, it leads to deformation of the contact, which leads to poor connection. Therefore, a structure as disclosed in Patent Document 1 is proposed as an oblique fitting preventing structure.
Further, as the size and height of the connector are reduced, the contact is also miniaturized, so that it is easily deformed even by touching the contact a little.
Further, regarding the demand for a low profile, there is a problem that simply reducing both the connectors cannot satisfy the specifications such as the contact pressure and lead to poor connection.

  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 that can prevent oblique fitting while reducing the height of the electrical connector during fitting.

  The purpose of the above is to provide an electrical connector 10 in which the plug connector 20 and the receptacle connector 50 are detachably fitted. A plurality of plug contacts 24 having connection portions 30 to be connected and a block 22 in which the plug contacts 24 are held and arranged are arranged so as to face both sides in the width direction, and the block 22 Projecting walls 32 higher than the upper surface 38 of the plug contact 24 are formed on both sides in the longitudinal direction of the plug contact 24, and a locking recess 34 for locking the receptacle connector 50 is provided between the plug contacts 24 facing each other. The connector 50 contacts the plug contact 24. A plurality of receptacle contacts 54 having a contact portion 56, an elastic portion 62, a fixing portion 58 held by the housing 52, and a connection portion 60 connected to the substrate, and a housing 52 in which the receptacle contacts 54 are held and arranged. The receptacle contacts 54 are arranged so as to face both sides in the width direction, the housing 52 is provided with engaging convex portions 64 that engage with the locking concave portions 34, and convex wall 68 is provided on both sides in the longitudinal direction. Engagement grooves 66 that are formed and into which the protruding wall 32 is inserted are provided on both sides in the longitudinal direction. And a side wall B71 higher than the contact portion upper surface 73 of the receptacle contact 54 is provided. The height of the wall 68 is higher than the upper surface 70 of the elastic portion of the receptacle contact 54. When the plug connector 20 and the receptacle connector 50 are fitted, the plug contact 24 and the receptacle are completely fitted until they are completely fitted. This can be achieved by preventing contact with the contact 54.

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.
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 higher than the upper surface 70 of the elastic portion of the receptacle contact 54. The height of the side wall B 71 is set 0.02 to 0.1 mm higher than the contact portion upper surface 73 of the receptacle contact 54, and the height of the engaging convex portion 64 and the receptacle contact 54 are increased. The relationship with the height of the contact portion upper surface 73 is -0.2 to 0.3 mm. 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, the diagonal contact cannot be prevented and the deformation of the contact cannot be prevented, and the elasticity of the receptacle contact 54 can be prevented. If the height of the convex wall 68 and the side wall A69 is 0.1 mm or more from the top surface 70, the height of the electrical connector 10 during fitting will not be reduced. When the height of the side wall B71 from the contact portion upper surface 73 of the receptacle contact 54 is 0.02 mm or less, it is not possible to prevent oblique fitting or contact deformation, and the side wall B71 from the contact portion upper surface 73 of the receptacle contact 54 cannot be prevented. If the height is 0.1 mm or more, the height of the electrical connector 10 during fitting will not be reduced. When the height of the engaging convex portion 64 is −0.1 mm or less from the contact portion upper surface 73 of the receptacle contact 54, it is impossible to prevent oblique fitting or contact deformation, and the contact portion upper surface of the receptacle contact 54 cannot be prevented. 73, if the height of the engaging convex portion 64 is 0.3 mm or more, the height of the electrical connector 10 during fitting will not be reduced.
Further, the block 22 of the plug connector 20 is provided with engaging portions 42 on both sides in the longitudinal direction and on both sides in the width direction, and the housing 52 of the receptacle connector 50 has the engaging portions on both sides in the width direction in the engaging groove 66. A concave portion that engages with the mating portion 42 is provided, and when engaged, the engaging portion 42 enters the concave portion to give a click feeling.

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) In the electrical connector 10 in which the plug connector 20 and the receptacle connector 50 are detachably fitted, the plug connector 20 is connected to the contact portion 26 that contacts the receptacle contact, the fixing portion 28 held by the block 22, and the substrate. A plurality of plug contacts 24 each having a connecting portion 30 and a block 22 in which the plug contacts 24 are held and arranged. The plug contacts 24 are arranged to face both sides in the width direction. Projecting walls 32 higher than the upper surface 38 of the plug contact 24 are formed on both sides in the longitudinal direction, and a locking recess 34 for locking with the receptacle connector 50 is provided between the plug contacts 24 facing each other. 50 is a contact portion in contact with the plug contact 24 6, an elastic portion 62, a plurality of receptacle contacts 54 having a fixing portion 58 held by the housing 52 and a connection portion 60 connected to the substrate, and a housing 52 in which the receptacle contacts 54 are held and arranged, The receptacle contact 54 is disposed so as to face both sides in the width direction, the housing 52 is provided with an engaging convex portion 64 that engages with the locking concave portion 34, and convex wall 68 is formed on both sides in the longitudinal direction. In addition, engaging grooves 66 for receiving the protruding walls 32 are provided on both sides in the longitudinal direction, and between the receptacle contacts 54 in the longitudinal direction, a side wall A69 higher than the upper surface 70 of the elastic portion of the receptacle contact 54 and a side wall A69 are connected. In addition, a side wall B71 higher than the contact portion upper surface 73 of the receptacle contact 54 is provided, and the convex wall 6 Is higher than the upper surface 70 of the elastic part of the receptacle contact 54, and when the plug connector 20 and the receptacle connector 50 are fitted, the plug contact 24 and the receptacle contact 54 are completely fitted until they are completely fitted. Since the electrical connector 10 at the time of fitting can be made 1.0 mm or less, the diagonal fitting can be surely prevented, and both the connections 24 and 54 are not deformed. , You can get a stable connection.
(2) When the plug connector 20 and the receptacle connector 50 are inserted obliquely, the protruding wall 32 of the plug connector 20, the convex wall 68 and the side wall A69 of the receptacle connector 50, or the engaging convex portion 64. Further, the contact with the side wall B 71 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. Since the receptacle contact 54 is not deformed, the electrical connector 10 at the time of mating can be made 1.0 mm or less, and the diagonal mating can be surely prevented. Therefore, a stable connection can be obtained.
(3) 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 upper surface 70 of the elastic portion of the receptacle contact 54. The height of the side wall B71 is 0.02 to 0.1 mm higher than the contact portion upper surface 73 of the receptacle contact 54, and the height of the engaging convex portion 64 and the receptacle contact are increased. Since the relationship with the height of the contact portion upper surface 73 of −54 is −0.2 to 0.3 mm, the electrical connector 10 at the time of fitting can be reduced to 1.0 mm or less, and the oblique fitting is also reliably prevented. Therefore, both the contacts 24 and 54 are not deformed, and a stable connection can be obtained.
(4) The block 22 of the plug connector 20 is provided with engaging portions 42 on both sides in the longitudinal direction and on both sides in the width direction, and the housing 52 of the receptacle connector 50 is provided with both sides in the engagement groove 66 in the width direction. Since a recess is provided to engage with the engagement portion 42 and the engagement portion 42 enters the recess when fitted to provide a click feeling, the fitting between the plug connector 20 and the receptacle connector 50 is performed. Completion can be confirmed easily.

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

  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 contact portion 26 that comes into contact with the receptacle contact 54 at one end, a fixing portion 28 that is fixed to the block 22, and a connection portion 30 that is connected to the substrate at the other end. 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 connecting portion 30 is a surface mount type (SMT) in this embodiment, but may be a dip type. The 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. The fixing 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. Examples include butylene terephthalate (PBT), polyamide (66PA, 46PA), liquid crystal polymer (LCP), polycarbonate (PC), and synthetic materials thereof.

  As shown in FIG. 5A, 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. 5A, the receptacle contact 54 has a substantially W-shaped cross section, and a contact portion 56 that contacts the plug contact 24 at one end and a connection portion 60 that connects to the substrate at the other end. Have. Between the contact part 56 and the connection part 60, there is further provided an elastic part 62 and a fixing part 58 fixed to the housing 52. From one end, the contact part 56, the elastic part 62, the fixing part 58, and the connection part are provided. They are arranged in the order of 60. 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 connection portion 60 is a surface mount type (SMT) in this embodiment, but may be a dip type.

The contact portion 56 of the receptacle contact 54 is curved so that it can easily enter the recess 36 of the plug contact 24.
Further, an elastic portion 62 is provided between the contact portion 56 and the fixed portion 58 in order to ensure an elastic length so that a stable contact at the time of fitting is obtained. 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. 5B, the housing 52 has a substantially box shape. The housing 52 is provided with engaging projections 64 that engage with the locking recesses 34 of the block 22 between the receptacle contacts 54 disposed so as to face both sides in the width direction. 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.
Between the receptacle contacts 54 in the longitudinal direction, a side wall A69 higher than the elastic portion upper surface 70 of the receptacle contact 54 and a side wall B71 continuous with the side wall A69 and higher than the contact portion upper surface 73 of the receptacle contact 54 are provided. It has been.
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 0. 0 higher than the upper surface 70 of the elastic portion of the receptacle contact 54. The height of the side wall B71 is set to be 0.02 to 0.1 mm higher than the contact portion upper surface 73 of the receptacle contact 54, and the height of the engagement convex portion 64 and the contact of the receptacle contact 54 are increased. The relationship with the height of the part upper surface 73 is -0.2 to 0.3 mm. Regarding the relationship between the height of the engaging convex portion 64 and the contact portion upper surface 73 of the receptacle contact 54, the engaging convex portion 64 is somewhat higher in view of preventing oblique fitting and preventing contact deformation. desirable. 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. 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, the diagonal contact cannot be prevented and the deformation of the contact cannot be prevented, and the elasticity of the receptacle contact 54 can be prevented. If the height of the convex wall 68 and the side wall A69 is 0.1 mm or more from the top surface 70, the height of the electrical connector 10 during fitting will not be reduced. When the height of the side wall B71 from the contact portion upper surface 73 of the receptacle contact 54 is 0.02 mm or less, it is not possible to prevent oblique fitting or contact deformation, and the side wall B71 from the contact portion upper surface 73 of the receptacle contact 54 cannot be prevented. If the height is 0.1 mm or more, the height of the electrical connector 10 during fitting will not be reduced. If 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, it is impossible to prevent oblique fitting or contact deformation, and the contact contact upper surface of the receptacle contact 54 cannot be prevented. 73, if the height of the engaging convex portion 64 is 0.3 mm or more, the height of the electrical connector 10 during fitting will not be reduced.
The front 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, the contact does not break even if it is obliquely fitted, and the structure is low in height.

It is a perspective view of the plug connector of this invention seen from the fitting port side. It is a perspective view of the receptacle connector of this invention seen from the fitting side. It is a perspective view of the plug connector of this invention seen from the board | substrate connection side. It is a perspective view of the receptacle connector of this invention seen from the board | substrate connection side. FIG. 5 is a cross-sectional view of the plug connector and the receptacle connector taken along a contact portion in a state where the plug connector and the receptacle connector are fitted. It is a perspective view of a plug contact. It is a perspective view of a receptacle contact. It is a perspective view of the block of a plug connector. It is a perspective view of the housing of a receptacle connector.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Electrical connector 12 Group joint 20 Plug connector 22 Block 24 Plug contact 26, 56 Contact part 28, 58 Fixing part 30, 60 Connection part 32 Projection wall 34 Locking recessed part 36 Depression 38 Upper surface 40 Rib 42 Engagement part 50 Receptacle connector 52 Housing 54 Receptacle contact 62 Elastic part 64 Engaging convex part 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

Claims (4)

In an electrical connector in which a plug connector and a receptacle connector are detachably fitted,
The plug connector includes a plurality of plug contacts having a contact portion that contacts the receptacle contact, a fixed portion held by the block, and a connection portion connected to the substrate, and a block where the plug contact is held and arranged, The plug contacts are arranged so as to face both sides in the width direction, and protruding walls higher than the upper surface of the plug contact are formed on both sides in the longitudinal direction of the block, and the receptacle connector is engaged between the plug contacts facing each other. A locking recess is provided,
The receptacle connector includes a plurality of receptacle contacts having a contact portion that comes into contact with the plug contact, an elastic portion, a fixed portion held by the housing, and a connection portion connected to the substrate, and a housing in which the receptacle contact is held and arranged. The receptacle contact is disposed so as to face both sides in the width direction, the housing is provided with an engaging convex portion that engages with the engaging concave portion, and convex wall is formed on both sides in the longitudinal direction. In addition, engagement grooves into which the projecting walls enter are provided on both sides in the longitudinal direction, and between the receptacle contacts in the longitudinal direction, the side wall A higher than the upper surface of the elastic part of the receptacle contact contact and the side wall A are connected to the receptacle contact. And a side wall B higher than the upper surface of the contact portion, and the height of the convex wall is the receptacle. Higher than the elastic portion upper surface of the contact,
An electrical connector characterized in that when the plug connector and the receptacle connector are fitted, the plug contact and the receptacle contact are not contacted until completely fitted.   When the plug connector and the receptacle connector are inserted obliquely, the protruding wall of the plug connector and the convex wall and side wall A or the engaging convex portion and the side wall B of the receptacle connector are in contact with each other. 2. The plug contact and the receptacle contact are prevented from being deformed to prevent erroneous fitting, so that the block does not contact the receptacle contact, and the housing does not contact the plug contact. Electrical connector as described.   The height of the protruding wall is 0.1 to 0.3 mm higher than the upper surface of the plug contact, and the height of the convex wall and side wall A is 0.02 to 0.1 mm higher than the upper surface of the elastic portion of the receptacle contact. The height of the side wall B is 0.02 to 0.1 mm higher than the upper surface of the contact portion of the receptacle contact, 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. The electrical connector according to claim 1 or 2, wherein the electrical connector has a thickness of 2 to 0.3 mm.   The block of the plug connector is provided with engaging portions on both sides in the longitudinal direction on both sides in the width direction, and the housing of the receptacle connector has recesses that engage with the engaging portions on both sides in the width direction in the engaging groove. The electrical connector according to any one of claims 1 to 3, wherein when the engagement portion is provided and fitted, the engagement portion enters the recess to give a click feeling.

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