JP2009230945A - Electric connector - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electric connector which is superior in vibration resistance, in which space saving of 5.6 mm and a low height of 5.5 mm or less are achieved, and which contacts at two points by a structure capable of floating. <P>SOLUTION: In the electric connector 10, an elastic part 66 is installed between a second fixed part 60 and a third fixed part 62 of a receptacle contact 56, an insulating body 54 becomes to have a floating state retained only by the receptacle contact 56, and capable of floating, contact between a first contact part 26 of a plug contact 24 and a second contact part 58 of the receptacle contact 56 are made line contact at one place. The receptacle contact 56 is meandering once between the second contact part 58 and the third fixed part 62 of the receptacle contact 56, so that a third contact part 76 is installed at a position opposing to the second contact part 58 of the receptacle contact 56, and a position of the elastic part 66 is arranged below the second contact part 58 and below the insulating body 54. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an electrical connector used in electrical equipment and electronic equipment such as industrial machines and car navigation systems, and in particular, vibration resistance even if space saving (width dimension when mated is 5 mm or less). It is an electrical connector that has an excellent structure and can be floated.

Conventionally, as a structure of an electrical connector that can be floated, there are many structures in which two insulators are used, one of which is held only by a contact, and an elastic portion capable of elasticity is provided on the contact. The elastic portion includes a meandering portion and a portion in which the contact length is increased by increasing the distance between two insulators.
The following three documents, Patent Document 1 (Japanese Patent Laid-Open No. 2002-42937), Patent Document 2 (Japanese Patent Laid-Open No. 2002-352908), and Patent Document 3 (Japanese Patent Laid-Open No. 2003-45525) have been proposed by the present applicant. Indicates.
According to the summary of Japanese Patent Application Laid-Open No. 2002-42937, when the board 60 is fixed to the housing in a state where the pin connector 10 and the socket connector 20 are fitted to each other, no load is applied to the respective contacts 14 and 24, resulting in poor connection. An electrical connector 1 in which the pin connector 10 and the socket connector 20 are detachably fitted, and has a groove 42 large enough to receive the socket connector 20. It can be achieved by providing a locator 40 provided with a means for engaging with the socket connector 20, mounting the socket connector 20 on the locator 40 and fixing the socket connector 20 to the board 60 so that it can float, and a socket contact 24 entering the locator 40. The socket connector 20 has a floating function. Electrical connector is disclosed which is adapted to. Incidentally, in the claims of JP-A-2002-42937, as claimed in claim 1, an electrical connector in which a pin connector and a socket connector are detachably fitted, and the pin connector includes a required number of pin contacts. The pin connector is a block that holds and fixes the socket contact, and the socket connector includes a required number of socket contacts that contact the pin contact and a housing that holds and fixes the socket contact. An electrical connector having a groove portion of a size for receiving a socket connector and equipped with a locator provided with an engaging means with the socket connector, and mounted on the board so that the socket connector can be floated by being attached to the locator, As a second aspect of the present invention, the socket that enters the locator The electrical connector according to claim 1, wherein the contact connector has a length of 5 to 10 mm, and the socket connector has a floating function. 5. The electrical connector according to claim 1, wherein the socket connector has a floating function so that the socket contact of the socket connector can be displaced in the groove, and the socket contact is connected to the locator. The electrical connector according to claim 2, wherein the socket contact is bent or twisted substantially perpendicularly in the installation groove, and the socket contact is curved in the connection groove of the locator. An electrical connector or the like according to claim 2 is disclosed. SUMMARY OF THE INVENTION According to the summary of Japanese Patent Laid-Open No. 2002-352908, it is an object to provide connectors 10 and 40 having a structure in which connectors 10 and 40 can be floated and contact connecting portions 22 can be positioned with a simple structure without increasing the number of parts. The contacts 14 and 44, each of which includes a contact portion 32 that comes into contact with the mating contact, a fixing portion 34 that is fixed to the blocks 12 and 42, and a connection portion 22 that is connected to the substrate, and a required number of contacts 14 and 44 are held and fixed. In the connectors 10 and 40 composed of the blocks 12 and 42, the elastic portions 20 and 50 are provided between the fixing portions 34 and the connection portions 22 of the contacts 14 and 44, and the external dimensions and clearances of the blocks 12 and 42 are approximately. By mounting the box-shaped housings 16 and 46 on the connection side of the contacts 14 and 44, the board is connected to the board. It is possible to achieve this by enabling positioning of the connector connection part 22 and floating of the connectors 10 and 40, and to make the elastic parts 20 and 50 of the contacts 14 and 44 meander at least once to facilitate the floating. A connector is disclosed. Incidentally, in the claims of JP-A-2002-352908, as claimed in claim 1, a connector to be mounted on a substrate, which is connected to a contact portion that contacts a mating contact, a fixed portion that is fixed to a block, and the substrate. In a connector comprising a contact comprising a connecting part and a block on which a required number of the contacts are held and fixed, an elastic part is provided between the fixing part and the connecting part of the contact, and the outer dimensions and clearance of the block A connector, characterized in that positioning of the contact connecting portion to the substrate and floating of the connector are enabled by mounting a substantially box-shaped housing with a contact on the connection side of the contact. The connector according to claim 1, wherein the elastic portion is meandered at least once. 5. A connector according to claim 2, wherein a positioning portion having a cross shape is provided between the elastic portion and the connection portion of the contact. A required number of insertion grooves into which the contacts are inserted are provided, a plate-like member is disposed between the insertion grooves, a protrusion is provided on one side of the plate-like member, and a guide surface is provided on the other side. The connector according to claim 3, wherein an inclined surface A and an inclined surface B are provided continuously with the guide surface, and an inclined portion provided substantially continuously with the inclined surface A is provided. When mounting the contact on the housing, first, the tip of the cross-shaped positioning portion of the contact is inserted along the guide surface, and then the tip is in the direction of the protrusion along the inclined portion and the inclined surface A. Move to the tip further 5. The contact according to claim 4, wherein the contact is mounted by moving the cross-shaped positioning portion of the contact onto the protrusion and the mounting portion when moving in the direction of the protrusion along the inclined surface B. 6. Connectors and the like are disclosed. According to the summary of Japanese Patent Laid-Open No. 2003-45525, an object is to provide a connector 10 having a structure in which the connector 10 can be floated and the contact connecting portion 22 can be positioned with a simple structure without increasing the number of parts. In the connector 10 comprising a contact 14 comprising a contact part 32 to be contacted, a fixed part 34 fixed to the block 12 and a connection part 22 connected to the substrate, and a block 12 on which a required number of contacts 14 are held and fixed. The elastic portion 20 meandered at least once is provided between the fixed portion 34 of the contact 14 and the connecting portion 22, and the block 12 is contacted with a substantially box-shaped housing 16 having the outer dimensions and clearance of the block 12. Positioning of the contact connection portion 22 to the substrate by mounting on the connection side of 14 This can be achieved by allowing the connector 10 to float, and it is better to provide a fitting portion 21 that engages with the insertion hole 36 of the housing 16 between the elastic portion 20 and the connection portion 22 of the contact 14. A structured connector is disclosed. Incidentally, in the claims of Japanese Patent Application Laid-Open No. 2003-45525, as claimed in claim 1, a connector mounted on a substrate, which is connected to a contact portion that contacts a mating contact, a fixed portion that is fixed to a block, and the substrate. A connector comprising a contact composed of a connecting portion and a block on which a required number of the contacts are held and fixed, and an elastic portion that is meandered at least once between the fixing portion and the connecting portion of the contact; The block has a substantially box-shaped housing having an outer dimension and clearance of the block mounted on the connection side of the contact, thereby enabling positioning of the contact connecting portion to the board and floating of the connector. According to a second aspect of the present invention, on the both sides in the width direction of the housing, the connector is blocked at a position close to the arm portion. 4. The connector according to claim 1, further comprising a slit for giving elasticity to the arm portion so that the lock of the housing can be easily attached. The housing according to claim 3, wherein the housing is provided between the elastic portion and the connection portion of the contact. 3. A connector or the like according to claim 2, further comprising a fitting portion that engages with the insertion hole.

In recent years, there are various requests from customers. The board-to-board dimensions when mating the plug connector and receptacle connector are reduced, and space saving (miniaturization of the width dimension) is reduced as much as possible, while being excellent in vibration resistance and floating. Something that has excellent connection stability is required.
To realize space saving (reduced width dimension), the thickness must be reduced. To improve the vibration resistance, the conflicting problem of increasing the thickness is possible and floating is possible. There is also a problem that the width dimension becomes large because it is necessary to meander the contact and to combine two insulators.
In addition, in order to obtain excellent vibration resistance, it is necessary to increase the wall thickness, but in order to increase the wall thickness, it is necessary to shift the positional relationship between the contact portion and the meandering portion in the vertical direction. It will be contrary to the conversion.
Furthermore, two-point contact is also required due to the problem of contact stability during floating. If two-point contact is used, this leads to a space saving.
The structures of Patent Documents 1 to 3 described above cannot satisfy all these requirements.

  The present invention has been made in view of such conventional problems, and is excellent in vibration resistance, can save space of 5.6 mm, can be reduced in height to 5.5 mm or less, and is floating. Therefore, it is intended to provide an electrical connector that can make two-point contact and has excellent connection stability.

  The purpose is an electrical connector 10 in which the plug connector 20 and the receptacle connector 50 are detachably fitted. The first contact portion 26 contacts the mating contact, the first fixing portion 28 fixed to the block 22 and the substrate 90. A plurality of plug contacts 24 having a first connection portion 30 to be connected to the plug connector 20 having a block 22 in which the plug contacts 24 are held and arranged; a second contact portion 58 in contact with the plug contact 24; and a housing 52 and a plurality of receptacle contacts 56 having second connection portions 64 and 62 fixed to the insulator 54 and a second connection portion 64 connected to the substrate 90, and a housing 52 in which the receptacle contacts 56 are held and arranged. And the receptacle connector 50 having the insulator 54. An elastic portion 66 that meanders at least once is provided between the second fixing portion 60 and the third fixing portion 62 of the receptacle contact 56, and the insulator 54 is held only by the receptacle contact 56. By making the floating state, the first contact portion 26 of the plug contact 24 and the second contact portion 58 of the receptacle contact 56 are formed into a substantially plate-shaped piece, and the plug contact 24 The contact between the first contact portion 26 and the second contact portion 58 of the receptacle contact 56 is changed to one line contact, and once between the second contact portion 58 and the third fixing portion 62 of the receptacle contact 56. The third contact portion 76 is further moved to a position facing the second contact portion 58 of the receptacle contact 56 by meandering. The elastic portion 66 is disposed below the second contact portion 58 (on the second connection portion 64 side) and below the insulator 54 (on the second connection portion 64 direction side). This can be achieved by the electrical connector 10 characterized by the following.

In the electrical connector 10 according to the second aspect, the housing 52 is provided with a substantially box-shaped space 68 into which the insulator 54 of the receptacle connector 50 is inserted, and the side wall 70 of the housing 52 is made as thick as possible. 2. The electrical connector according to claim 1, wherein a width dimension when the plug connector 20 and the receptacle connector 50 are fitted to each other is suppressed to 5.6 mm or less, vibration is improved, and floating is enabled. 10
The electrical connector according to claim 3 is characterized in that the elastic portion 66 is meandered once, and two curvature diameters 72 of the elastic portion 66 are 0.2 to 0.7 mm. The electrical connector 10 according to 1 or 2 is provided.
4. The electrical connector according to claim 1, wherein the electrical connector has a point contact by projecting the third contact portion in the direction of the second contact portion. 10

The electrical connector 10 according to claim 5, wherein the second contact portion 64 of the receptacle contact 56 is arranged so as not to protrude from the housing 52, thereby making point contact. 4 in the electrical connector 10.
Further, in the electrical connector 10 according to claim 6, a bent portion 74 that is bent inward (toward the center of the housing 52) is provided between the elastic portion 66 of the receptacle contact 56 and the third fixing portion 62. 6. The electrical connector 10 according to claim 1, wherein the electrical connector 10 is characterized in that the electrical connector 10 is provided.

As is clear from the above description, according to the electrical connector of the present invention, the following excellent effects can be obtained.
(1) The electrical connector 10 according to the first aspect is an electrical connector 10 in which the plug connector 20 and the receptacle connector 50 are detachably fitted, and is fixed to the first contact portion 26 and the block 22 that come into contact with the mating contact. A plurality of plug contacts 24 each having a first fixing portion 28 and a first connection portion 30 connected to the substrate 90; the plug connector 20 having a block 22 in which the plug contacts 24 are held and arranged; A plurality of receptacle contacts 56 having a second contact portion 58 in contact, a second and third fixing portions 60 and 62 fixed to the housing 52 and the insulator 54, and a second connection portion 64 connected to the substrate 90, and the receptacle contacts The receptacle connector 5 having a housing 52 and an insulator 54 in which 56 is held and arranged In the electrical connector 10 comprising: the elastic contact 66 meandering at least once between the second fixing portion 60 and the third fixing portion 62 of the receptacle contact 56; and the insulator 54 is the receptacle By being held only by the contact 56, it is allowed to float by being in a floating state, the shapes of the first contact portion 26 of the plug contact 24 and the second contact portion 58 of the receptacle contact 56 are substantially plate-shaped pieces, and The contact between the first contact portion 26 of the plug contact 24 and the second contact portion 58 of the receptacle contact 56 is changed to one line contact, and the second contact portion 58 to the third fixing portion 62 of the receptacle contact 56 are arranged. Is opposed to the second contact portion 58 of the receptacle contact 56 by meandering once between A third contact portion 76 is further provided at a position where the elastic portion 66 is positioned below the second contact portion 58 (on the second connecting portion 64 side) and below the insulator 54 (second position). Since the electrical connector 10 is characterized in that it is arranged in the connection part 64 direction side), it can save space of 5.5 mm or less (2.5 mm smaller than the conventional) when mated, and 10 mm when mated. The following (which is 6.75 mm lower than before) can be realized, and the vibration can be improved (see FIG. 6). The floating of 0.2 to 0.5 mm is possible, and two-point contact is made. Accordingly, it is possible to provide the electrical connector 10 having excellent connection stability, that is, floating, space saving, low profile, and excellent vibration resistance and connection stability.
(2) In the electrical connector 10 according to claim 2, the housing 52 is provided with a substantially box-shaped space 68 into which the insulator 54 of the receptacle connector 50 is inserted, and the side wall 70 of the housing 52 is made as thick as possible. Even so, the width dimension when the plug connector 20 and the receptacle connector 50 are fitted to each other is suppressed to 5.6 mm or less, the vibration is improved, and floating is possible. Therefore, it is possible to save space of 5.5 mm or less (2.5 mm smaller than the conventional) when mated, and a low profile of 10 mm or less (lower 6.75 mm than the conventional) when mated. Can improve the vibration characteristics (see Fig. 6), can float 0.2-0.5mm, and has excellent connection stability by using two-point contact That is, the floating can be, and, space saving and low profile can also be provided an excellent electrical connector 10 to connect stability and vibration resistance.
(3) The electrical connector 10 according to claim 3 is characterized in that the elastic portion 66 meanders once and two curvature diameters 72 of the elastic portion 66 are 0.2 to 0.7 mm. Since the electrical connector 10 according to the item 1 or 2 is used, it leads to further space saving, and space saving of 5.5 mm or less (2.5 mm smaller than the conventional) when mating is possible, and 10 mm or less when mating. It is possible to realize a low profile (which is 6.75 mm lower than before), improve the vibration (see FIG. 6), can float 0.2 to 0.5 mm, and make two-point contact Therefore, it is possible to provide an electrical connector having excellent connection stability, that is, floating, space saving, low profile, and excellent vibration resistance and connection stability.
(4) The electrical connector according to claim 4, wherein the electrical contact according to claim 1, wherein the third contact portion 76 is made point contact by projecting in the direction of the second contact portion 58. The connector 10 provides superior connection stability, saves space of 5.5 mm or less (2.5 mm smaller than before) when mated, and 10 mm or less (6.75 mm lower than conventional) when mated. The height can be reduced, the vibration can be improved (see FIG. 6), the floating of 0.2 to 0.5 mm is possible, and the connection stability is excellent by using two-point contact. That is, it is possible to provide the electrical connector 10 that can float, save space and reduce the height, and is excellent in vibration resistance and connection stability.
(5) The electrical connector 10 according to claim 5, wherein the second connecting portion 64 of the receptacle contact 56 is arranged so as not to protrude from the housing 52, thereby making point contact. Alternatively, the electrical connector 10 described in 3 and 4 leads to further space saving, and can be reduced to 5.5 mm or less (2.5 mm smaller than conventional) when mated, and 10 mm or less when mated. It is possible to realize a low profile (which is 6.75 mm lower than before), improve the vibration (see FIG. 6), can float 0.2 to 0.5 mm, and make two-point contact Therefore, the electrical connector 10 can be provided with excellent connection stability, that is, floating, space saving, low profile, and excellent vibration resistance and connection stability.
(6) The electrical connector 10 according to claim 6 is provided with a bent portion 74 bent in the inner direction (center direction of the housing 52) between the elastic portion 66 of the receptacle contact 56 and the third fixing portion 62. Since the electrical connector 10 according to any one of claims 1 to 5 is used, it leads to further space saving and is 5.5 mm or less (2.5 mm smaller than the conventional) when fitted. Space-saving is possible, and it is possible to realize a low profile of 10 mm or less (which is 6.75 mm lower than the conventional one) when mated, improving vibration (see FIG. 6), 0.2 to 0.5 mm An electrical connector with excellent vibration resistance and connection stability. 10 It can be provided.

A feature of the present invention is an electrical connector 10 in which a plug connector 20 and a receptacle connector 50 are detachably fitted, and includes a first contact portion 26 that contacts a mating contact and a first fixing portion 28 that is fixed to a block 22. A plurality of plug contacts 24 having a first connection portion 30 connected to the substrate 90, the plug connector 20 having a block 22 in which the plug contacts 24 are held and arranged, and a second contact portion 58 in contact with the plug contact 24. A plurality of receptacle contacts 56 having second and third fixing portions 60 and 62 fixed to the housing 52 and the insulator 54, and a second connection portion 64 connected to the substrate 90, and the receptacle contacts 56 are held and arranged. An electrical connector comprising a housing 52 and the receptacle connector 50 having an insulator 54 0, an elastic portion 66 meandering at least once is provided between the second fixing portion 60 and the third fixing portion 62 of the receptacle contact 56, and the insulator 54 is held only by the receptacle contact 56. In this way, the floating state is achieved, and the first contact portion 26 of the plug contact 24 and the second contact portion 58 of the receptacle contact 56 are formed into substantially plate-like pieces, and the plug contact 24 The contact between the first contact portion 26 of the receptacle contact 56 and the second contact portion 58 of the receptacle contact 56 is changed to one line contact, and the distance between the second contact portion 58 and the third fixing portion 62 of the receptacle contact 56 is 1 A third contact is further provided at a position facing the second contact portion 58 of the receptacle contact 56 by meandering the winding contacts. 76 is provided, and the position of the elastic portion 66 is disposed below the second contact portion 58 (on the second connection portion 64 side) and below the insulator 54 (on the second connection portion 64 direction side). It is the electrical connector 10 characterized by doing.
In other words, the plastic insulator on the side of the receptacle connector 50 is divided into the housing 52 and the insulator 54, and the insulator 54 is held only by the receptacle contact 56 having the elastic portion 66, so that it can float. Is disposed below the second contact part 58 (on the second connection part 64 direction side) and below the insulator 54 (on the second connection part 64 direction side). While enabling space saving of 5 mm or less, the thickness of the housing 52 is increased to improve vibration resistance, and the second contact portion 58 to the third fixing portion 62 of the receptacle contact 56 meander once. By providing a third contact portion 76 at a position opposite to the second contact portion 58 of the receptacle contact 56, two-point contact is achieved. In which enhanced connection stability.

  Based on FIG. 6, a vibration test will be described for two conventional products and the present product (improved product). As test conditions, the frequency was 20 to 200 Hz, the acceleration was 10 G, the test time was 15 min / 1 cycle, and the time until instantaneous interruption was confirmed. The result is shown in FIG. As a result, the conventional product-1 in FIG. 7A has only one hour, and the conventional product-2 in FIG. 7B has only four hours, whereas the present product (improved product) has 10 hours. You can see the above and understand that it leads to improved vibration.

  An embodiment of the electrical connector of the present invention will be described based on the drawings. FIG. 1A is a perspective view of the plug connector viewed from the fitting direction, and FIG. 1B is a perspective view of the receptacle connector viewed from the fitting direction. FIG. 2 is a cross-sectional perspective view of a state in which a plug connector and a receptacle connector, which are cross-sectioned at a certain contact portion, are fitted. 3A is a perspective view of the plug contact, and FIG. 3B is a perspective view of the receptacle contact. 4A is a perspective view of a housing of the plug connector, FIG. 4B is a perspective view of an insulator of the plug connector, and FIG. 4C is a perspective view of a block of the receptacle connector. FIG. 5A is a cross-sectional perspective view of a plug connector cut at a certain contact portion, and FIG. 5B is a cross-sectional perspective view of a receptacle connector cut at a certain contact portion.

  The electrical connector 10 of the present invention includes a plug connector 20 and a receptacle connector 50. Each connector is mainly composed of a contact and a plastic insulator.

  First, the receptacle connector 50 will be described. The receptacle connector 50 mainly includes a housing 52, an insulator 54, and a receptacle contact 56. The housing 52 and the insulator 54 are electrically insulating plastics, and are manufactured by injection molding according to a known technique. These materials are appropriately selected in consideration of dimensional stability, workability, cost, etc. Specifically, polybutylene terephthalate (PBT), polyamide (66PA, 46PA), liquid crystal polymer (LCP), polycarbonate (PC), poniphenylene sulfide (PPS), and synthetic materials thereof can be used. The housing 52 and the insulator 54 are provided with a second insertion hole 78 and a third insertion hole 80 in which a required number of receptacle contacts 56 are mounted, and are fixed by press-fitting, hooking (lance), welding or the like. ing.

  The receptacle contact 56 which is the point of the present invention will be described. The receptacle contact 56 is made of metal and is manufactured by a known press working. Since the material of the receptacle contact 56 is required to be springy or conductive, examples thereof include brass, beryllium copper, and phosphor bronze. The receptacle contact 56 is mainly connected to a second contact portion 58 that contacts the plug contact 24, a second fixing portion 60 that is fixed to the housing 52, a third fixing portion 62 that is fixed to the insulator 54, and the substrate 90. The elastic portion 66 meandering at least once and provided between the second connecting portion 64, the second fixing portion 60, and the third fixing portion 62, and the third contact portion 76 that contacts the plug contact 20. And have.

The respective portions are arranged in the order of the third contact portion 76, the second contact portion 58, the third fixing portion 60, the elastic portion 66, the second fixing portion 62, and the second connecting portion 64. Below, each site | part is demonstrated. First, the second contact portion 58 is a portion that contacts the first contact portion 26 of the plug contact 24. The second contact portion 58 has a substantially flat plate-like shape, and has a line contact structure with the first contact portion 26 of the plug contact 24 at one location. The second contact portion 58 only needs to be able to contact the first contact portion 26 of the plug contact 24, and is appropriately selected in consideration of contact stability, space saving, low profile, workability, etc. of the electrical connector 10 during fitting. design.
Further, in order to obtain a stable contact, the position of the receptacle contact 56 facing the second contact portion 58 by meandering once between the second contact portion 58 and the third fixed portion 62 of the receptacle contact 56. Further, a third contact portion 76 is provided so that two points come into contact with each other. That is, the first contact portion 26 of the plug contact 24 is sandwiched between the second contact portion 58 and the third contact portion 76 of the receptacle contact 56, and two points are in contact with each other. In this embodiment, the third contact portion 76 is projected in the second contact portion direction 58 to make point contact.
The third fixing portion 62 is a portion held in the second insertion hole 78 of the housing 52. In this embodiment, it is held by press-fitting, but any method may be used as long as it can be held, and it is appropriately designed in consideration of downsizing of the connector, strength, holding force and the like.

  The elastic portion 66 is a portion that holds the insulator 54 in a floating state and allows the insulator 54 to move (float). In the present embodiment, the elastic portion 66 meanders once. The elastic portion 66 is positioned between the second fixing portion 60 and the third fixing portion 62 below the second contact portion 58 (on the side of the second connecting portion 64) and the insulator 54. It arrange | positions more downward (2nd connection part 64 direction side). The elastic portion 66 may meander as many times as long as the insulator 54 can move (floating). However, the elastic portion 66 is appropriately selected in consideration of space saving, low profile, workability, and the like of the electrical connector 10 during fitting. design. The curvature diameter 72 of the meandering portion of the elastic portion 66 is appropriately designed in consideration of space saving, low profile and workability of the electrical connector 10 during fitting. 7 mm. If it is 0.2 mm or less, there is no elasticity and it cannot float, and if it is 0.7 mm or more, it is not possible to save the space of the electrical connector 10 during fitting.

The second fixing part 60 is a part held in the third insertion hole 80 of the insulator 54. In this embodiment, it is held by press-fitting. However, any method may be used as long as it can be held, and it is appropriately designed in consideration of the miniaturization of the connector, the strength, the holding force, the floating property of the insulator, and the like.
The second connection part 64 is a part connected to the substrate 90. The second connection portion 64 may have any shape (type) as long as it can be connected to the substrate 90, but in this embodiment, the second connection portion 64 is a surface mount (SMT) type. For example, a dip type may be used. The second connection portion 64 is disposed so as not to protrude from the housing 52 in consideration of space saving.

  Considering the space saving of the electrical connector 10 at the time of fitting, a bent portion 74 that is bent inward (on the opposite side of the side wall 70) between the elastic portion 66 of the receptacle contact 56 and the third fixing portion 62. It is desirable to provide Providing the bent portion 74 leads to space saving while ensuring sufficient floating.

Next, the housing 52 will be described. The housing 52 has a substantially U-shaped cross section. The housing 52 is provided with as many second insertion holes 78 as the number of cores of the receptacle contacts 56 in which the receptacle contacts 56 are inserted and held. The shape and size of the second insertion hole 78 are appropriately designed in consideration of the size, shape, holding force and the like of the receptacle contact 56.
The housing 52 is provided with a space 68 in which the insulator 54 is inserted and can float. The space 68 may have any shape and size as long as the insulator 54 can enter and float. In this embodiment, considering the floating amount, the insulator 54 is made larger by about 0.3 to 1.0 mm.

  Next, the insulator 54 will be described. The insulator 54 has a substantially T-shaped cross section. In the insulator 54, the receptacle contacts 56 are inserted, and third insertion holes 80 to be held are provided by the number of cores of the receptacle contacts 56. The shape and size of the third insertion hole 80 are appropriately designed in consideration of the size, shape, holding force and the like of the receptacle contact 56. The third insertion hole 80 is shaped so that the first contact portion 26 of the plug contact 24 can contact the second contact portion 58 of the receptacle contact 56.

  Next, the plug connector 20 will be described. The plug connector 20 mainly has a block 22 and a plug contact 24.

  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 mainly includes a first contact portion 26 that contacts the receptacle contact 56, a first fixing portion 28 that is fixed to the block 22, and a first connection portion 30 that is connected to the substrate 90.

  Each part is arranged in the order of the first contact part 26, the first fixing part 28, and the first connection part 30. Below, each site | part is demonstrated. First, the first contact portion 26 is a portion that contacts the second contact portion 58 of the receptacle contact 56. The first contact portion 26 is a substantially plate-like piece and is curved, and has a line contact structure with the second contact portion 58 of the receptacle contact 56 at one location. The first contact portion 26 only needs to be able to contact the second contact portion 58 of the receptacle contact 56, and is appropriately selected in consideration of contact stability, space saving, low profile, workability, etc. of the electrical connector 10 during fitting. design.

The first fixing portion 28 is a portion held in the first insertion hole 34 of the block 22. In this embodiment, it is held by press-fitting. However, any method may be used as long as it can be held, and it is appropriately designed in consideration of the miniaturization of the connector, the strength, the holding force, the floating property of the insulator, and the like.
The first connection part 30 is a part connected to the substrate 90. The first connection part 30 may be of any shape (type) as long as it can be connected to the substrate 90, but in this embodiment, it is of surface mount (SMT) type. For example, a dip type may be used. The first connection part 30 is arranged so as not to protrude from the block 22 in consideration of space saving.

  Next, the block 22 will be described. The block 22 has a substantially T-shaped cross section. The block 22 is an electrically insulating plastic, and is manufactured by a known technique of injection molding. These materials are appropriately selected in consideration of dimensional stability, workability, cost, etc. Generally, polybutylene is used. Examples thereof include terephthalate (PBT), polyamide (66PA, 46PA), liquid crystal polymer (LCP), polycarbonate (PC), poniphenylene sulfide (PPS), and synthetic materials thereof. The block 22 is provided with a first insertion hole 34 in which a required number of plug contacts 24 are mounted, and is fixed by press fitting, hooking (lance), welding or the like.

  As an application example of the present invention, it is used for an electrical connector 10 used in electrical equipment and electronic equipment such as industrial machines and car navigation systems, and in particular, space saving (width dimension when mated is 5 mm or less). The present invention also relates to the electrical connector 10 having excellent vibration resistance and a floating structure.

(A) It is a perspective view of the plug connector seen from the fitting direction. (B) It is a perspective view of the receptacle connector seen from the fitting direction. It is a cross-sectional perspective view of a state in which a plug connector and a receptacle connector cross-sectioned at a certain contact portion are fitted. (A) It is a perspective view of a plug contact. (B) It is a perspective view of a receptacle contact. (A) It is a perspective view of the housing of a plug connector. (B) It is a perspective view of the insulator of a plug connector. (C) It is a perspective view of the block of a receptacle connector. (A) It is a cross-sectional perspective view of the plug connector cut in a certain contact portion. (B) It is a cross-sectional perspective view of the receptacle connector cut in the cross section with a certain contact part. It is explanatory drawing of vibration property. (A) It is sectional drawing of the conventional product-1 of the fitting state in FIG. (B) It is sectional drawing of the conventional product-2 of the fitting state in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Electrical connector 20 Plug connector 22 Block 24 Plug contact 26 1st contact part 28 1st fixing | fixed part 30 1st connection part 34 1st insertion hole 50 Receptacle connector 52 Housing 54 Insulator 56 Receptacle contact 58 2nd contact part 60 2nd Fixed portion 62 Third fixed portion 64 Second connecting portion 66 Elastic portion 68 Space 70 Side wall 72 Curvature diameter 74 Bent portion 76 Third contact portion 78 Second insertion hole 80 Third insertion hole

Claims (6)

An electrical connector in which a plug connector and a receptacle connector are detachably fitted,
The plug connector having a plurality of plug contacts having a first contact portion that contacts a mating contact, a first fixing portion fixed to the block, and a first connection portion connected to the substrate, and a block in which the plug contacts are held and arranged When,
A plurality of receptacle contacts having a second contact portion that contacts the plug contact, second and third fixing portions fixed to the housing and the insulator, and a second connection portion connected to the substrate, and the receptacle contacts are held and arranged. An electrical connector comprising: a housing having a housing; and the receptacle connector having an insulator.
An elastic portion that snakes at least once is provided between the second fixing portion and the third fixing portion of the receptacle contact, and the insulator is held in the receptacle contact only to be in a floating state. Makes floating possible,
The shape of the first contact portion of the plug contact and the second contact portion of the receptacle contact is a substantially plate-like piece, and the contact between the first contact portion of the plug contact and the second contact portion of the receptacle contact is 1 Further, a third contact portion is provided at a position opposite to the second contact portion of the receptacle contact by making a meandering once between the second contact portion and the third fixing portion of the receptacle contact while making the line contact at the location. ,
The electrical connector is characterized in that a position of the elastic portion is arranged below the second contact portion (second connection portion direction side) and below the insulator (second connection portion direction side). The housing is provided with a substantially box-shaped space for receiving the insulator of the receptacle connector, and the width dimension when the plug connector and the receptacle connector are fitted to each other even if the side wall of the housing is made as thick as possible. The electrical connector according to claim 1, wherein the electrical connector is suppressed to 5.6 mm or less, is improved in vibration characteristics, and is allowed to float. The electrical connector according to claim 1, wherein the elastic portion is meandered once, and two curvature diameters of the elastic portion are 0.2 to 0.7 mm. The electrical connector according to claim 1, wherein the third contact portion is point-contacted by projecting in the direction of the second contact portion. 5. The electrical connector according to claim 1, wherein the second contact portion of the receptacle contact is arranged so as not to protrude from the housing to be a point contact. 6. The bent portion according to claim 1, wherein a bent portion bent in an inward direction (a central direction of the housing) is provided between the elastic portion of the receptacle contact and the third fixing portion. Electrical connector.

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