CN105684224A - Card edge connector - Google Patents

Abstract

This invention provides a card edge connector that makes it possible to increase the number of contacts. Said card edge connector is provided with the following: an outer housing (50) that holds a circuit board (60) that has two rows of conductive patterns (65) formed along one edge; and an inner housing (10) that is fitted into the outer housing (50) and holds a plurality of rows of terminal fittings (40) that are electrically connected to the respective conductive patterns (65) on the circuit board (60). The terminal fittings (40) are laid out so as to be angled in the same direction with respect to the circuit board (60). The inner housing (10) comprises a first movable housing (11) located on the front-surface (61) side of the circuit board and a second movable housing (12) located on the back-surface side of the circuit board (60). Said first and second movable housings (11 and 12) are swingably coupled to each other.

Description

Card Edge Connector

technical field

The present invention relates to a card edge connector, and more particularly to a card edge connector capable of supporting multi-polarization.

Background technique

Conventionally, as an electrical connector for connecting a circuit board represented by a printed wiring board with other electrical circuits, a card edge type connector (for example, Patent Documents 1, 2, 3), a card edge type connector and an edge type connector are known. The plate-shaped peripheral edge is connected to a circuit board provided with a plurality of terminals composed of conductive patterns in a row. The card edge connector is electrically connected to terminals on the circuit board side provided on the periphery by moving the terminal metal piece in parallel with respect to the circuit board.

Including card edge connectors, there is a strong demand for multi-polarization that increases the number of terminals for electrical connectors. Multi-polarization of the card edge connector has previously been addressed by increasing the number of terminals arranged in a row by increasing the size (width) of the circuit board in the direction in which the terminals are arranged in a row, and by increasing the number of terminals arranged in a row on the front and back of the circuit board Both sides set the terminal.

prior art literature

patent documents

Patent Document 1: Japanese Patent Laid-Open No. 2011-129350;

Patent Document 2: Japanese Patent Application Laid-Open No. 2012-142164;

Patent Document 3: Japanese Unexamined Patent Publication No. 2012-212613.

Contents of the invention

The problem to be solved by the invention

However, enlarging the width of the circuit board is restricted by the relationship with peripheral devices, and the number of poles may not be sufficient even if the front surface and the rear surface are used.

It is therefore an object of the present invention to provide a card edge connector capable of increasing the number of poles.

solutions to problems

Based on such purpose, the inventors conceived that if the terminal metal fittings of the card edge connector are connected obliquely with respect to the circuit board, the terminal metal fittings and the card side terminals can be arranged in two or more rows, respectively. That is, the card edge connector of the present invention includes: a second housing that holds a circuit board on which a plurality of conductive patterns are formed along one edge; Fitting and holding the terminal metal fittings arranged in multiple rows electrically connected to each of the conductive patterns of the circuit board. Furthermore, the card edge connector of the present invention is characterized in that the terminal metal pieces are arranged obliquely in the same direction with respect to the circuit board.

According to a preferred card edge connector of the present invention, the first housing includes a first movable housing disposed on one side of the circuit board, and a second movable housing disposed on the other side of the circuit board. In the movable case, the first movable case and the second movable case are connected to each other so as to be able to swing. In addition, the second housing is provided with an accommodating chamber that accommodates the first movable housing and the second movable housing, and has a function of closing the first movable housing and the second movable housing toward a fitting completion position. the guide surface.

In the card edge connector having this configuration, the first housing is inserted into the second housing toward the completion position to complete the fitting. On the other hand, the terminal metal material is spaced from the circuit board until a predetermined position before reaching the completed position of fitting, and is continuously in contact with the conductive pattern from the predetermined position until it reaches the completed position. Therefore, according to the preferred card edge connector of the present invention, the contact between the terminal metal piece and the circuit board can be avoided during most of the mating process, so that the force required to insert the first housing into the second housing can be suppressed.

According to the preferred card edge connector of the present invention, a waterproof seal can be provided on the rear side where the electric wires connected to the terminal metal fittings are drawn out. The waterproof seal seals the rear end of the first movable housing and between the first housing and the second housing.

According to a preferred card edge connector of the present invention, the terminal metal can be provided with a U-shaped folded contact at the tip that is in contact with the conductive pattern. Since the contact is folded back in a U-shape, moderate elasticity can be imparted, and since the portion in contact with the conductive pattern is a curved surface, the abrasion force applied to the conductive pattern can be suppressed relatively low.

Invention effect

According to the present invention, since the terminal metal fittings of the card edge connector are inclined relative to the circuit board, it is possible to arrange the terminal metal fittings in two rows or more. Thus, the present invention facilitates multi-polarization of card edge connectors.

Description of drawings

FIG. 1 is a vertical cross-sectional view showing a card edge connector according to the present embodiment, (a) showing a state where fitting is completed, and (b) an exploded view showing each element;

FIG. 2 is a plan view showing the card edge connector according to this embodiment;

3 is a longitudinal sectional view showing the initial stage of fitting of the card edge connector according to the present embodiment;

Fig. 4 is a longitudinal sectional view showing a state in which fitting is progressed compared with Fig. 3;

Fig. 5 is a longitudinal sectional view showing a state immediately before the fitting is completed, as fitting progresses compared with Fig. 4 .

detailed description

Hereinafter, the present invention will be described in detail based on the embodiments shown in the drawings.

As shown in FIGS. 1 and 2 , a card edge connector 1 according to the present invention includes an inner case (first case) 10 and an outer case (second case) 50 that holds a circuit board 60 . The card edge connector 1 is electrically connected to a conductive pattern 65 formed on each of the front surface 61 and the rear surface 63 of the circuit board 60 , and other circuit boards (not shown). This card edge connector 1 is characterized in that it electrically connects the conductive patterns 65 arranged in two rows along the fitting direction x of the circuit board 60 and the terminal metal fittings held in the inner case 10 and arranged in two rows along the fitting direction. 40. Hereinafter, the fitting procedure of the inner case 10 and the outer case 50 will be described after sequentially describing each component. In addition, in the inner case 10 and the outer case 50, the front and rear are defined according to the direction of mutual fitting.

[Inner housing 10]

As shown in FIG. 1( b ), the inner case 10 includes a first movable case 11 and a second movable case 12 , and holds the terminal fittings 40 , respectively. The first movable casing 11 and the second movable casing 12 are connected to each other by a swing shaft 13 so as to be swingable within a predetermined range. When the inner case 10 and the outer case 50 are fitted together, the first movable case 11 and the second movable case 12 sandwich the circuit board 60 from the front 61 side and the back 63 side. The first movable housing 11 and the second movable housing 12 have the same configuration although they are disposed in different positions, and the same components are assigned the same reference numerals. The first movable housing 11 will be described below. illustrate. In addition, both the first movable case 11 and the second movable case 12 are integrally formed by injection molding insulating resin.

The first movable housing 11 has a cavity 15 that accommodates and holds a plurality of terminal fittings 40 . A plurality of chambers 15 constitute a chamber column by being aligned in the width direction y ( FIG. 2 ) of the first movable housing 11 . Regarding the first movable housing 11 , the cavity rows are arranged in two rows in the fitting direction x. Among the two columns, the cavity 15 on the front side is sometimes called a cavity 15f, and the cavity 15 on the rear side is called a cavity 15r. However, when there is no need to distinguish between the two, they are collectively referred to as cavity 15 .

The first movable case 11 has a clamping surface 16 facing the circuit board 60 when fitted with the outer case 50 , a guide surface 17 formed at a predetermined angle with the clamping surface and connected to one end thereof, and a clamping surface 16 connected to the clamping surface 16 . The other end connected to the rear end face 18. The cavity 15 is formed parallel to the guide surface 17 , and includes a connection opening 151 opened on the clamping surface 16 and a lead-out opening 152 opened on the rear end surface 18 . Thus, the cavity 15 is provided obliquely with respect to the clamping surface 16, and penetrates the first movable housing 11 in the front-rear direction.

As shown in FIG.

Inside the cavity 15 , a lance can be provided to hold the accommodated terminal fitting 40 at a predetermined position and not come out of the cavity 15 .

As shown in FIG. 11( b ), in the first movable housing 11 , a cubic fitting block 19 is formed at a crossing portion located on the front end side of the clamping surface 16 and the guide surface 17 . The fitting block 19 is in contact with the first guide surface 53 of the outer casing 50 (the second movable casing 12 is the second guide surface 54 ) during the fitting process of the inner casing 10 and the outer casing 50 . In addition, when the fitting is completed, the fitting block 19 is fitted into the fitting groove 55 of the outer casing 50 . The effects brought about by the fitting block 19 coming into contact with the first guide surface 53 and the second guide surface 54 and fitting into the fitting groove 55 will be described later.

The first movable housing 11 includes a support piece 14 protruding from the clamping surface 16 . The swing shaft 13 is provided so as to pass through the support piece 14 of the first movable housing 11 and the support piece 14 of the second movable housing 12 which are arranged so that the sandwiching surfaces 16 face each other. In this way, the first movable housing 11 and the second movable housing 12 are supported in a mutually swingable manner.

[waterproof seal 20]

The waterproof seal 20 is provided for preventing water from intruding into the interior of the inner housing 10 from the side of the rear end face 18 and from between the inner housing 10 and the outer housing 50 . Therefore, the waterproof seal 20 has a shape imitating the rear end surface 18 and is installed without providing a gap therebetween.

As shown in Figure 1(b), the waterproof seal 20 has a larger surface area than the combined rear end surfaces 18 of the first movable case 11 and the second movable case 12, and is made of soft Parts made of materials such as rubber.

The waterproof sealant 20 is formed with sealing holes 21 penetrating through the front and back at positions corresponding to each of the plurality of cavities 15 of the first movable housing 11 and the second movable housing 12 . The terminal metal piece 40 passes through the sealing hole 21 when inserted into the cavity 15 , and the electric wire 45 connected to the terminal metal piece 40 passes through the sealing hole 21 . The electric wire 45 passing through the sealing hole 21 is in close contact with the periphery of the sealing hole 21 , thereby preventing the water passing through the outlet opening 152 from intruding into the cavity 15 .

The waterproof seal 20 is formed with a seal block 23 over the entire extent of the outer periphery. The sealing block 23 has three sealing strips 24 protruding from the outer peripheral surface, and the sealing strips 24 will be in close contact with the outer casing 50 after the fitting of the inner casing 10 and the outer casing 50 is completed. In this way, the waterproof seal 20 prevents intrusion of water from between the inner housing 10 and the outer housing 50 .

[cover 30]

The cover 30 fixes the inner case 10 and the waterproof seal 20 to the outer case 50 by being installed to cover the waterproof seal 20 from the rear side.

As shown in Figure 1(b), the cover 30 has a first cover 31 corresponding to the first movable housing 11 and a second cover 32 corresponding to the second movable housing 12, both of which can be connected by a hinge 33. connected by swinging each other. When the cover 30 is assembled to the inner case 10 via the waterproof seal 20 , it will swing to follow the swing movements of the first movable case 11 and the second movable case 12 of the inner case 10 . In addition, in this embodiment, the angle between the clamping surfaces 16 of the first movable housing 11 and the second movable housing 12 becomes smaller and close to parallel is called closed, and the two are called closed. The situation where the angle formed by the two becomes larger is called opening.

The first cover 31 and the second cover 32 of the cover 30 are formed with wire holes 33 penetrating inside and outside at positions corresponding to each of the plurality of cavities 15 of the first movable housing 11 and the second movable housing 12 . The electric wires 45 penetrating the sealing hole 21 are led out to the outside through the electric wire hole 33 .

The fitting bush 35 of the cover 30 is formed over the entire range of the outer periphery. When the fitting is completed, the fitting bush 35 is fitted to the fitting bush 57 of the outer casing 50 from the outside to prevent the inner casing 10 and the outer casing 50 from coming off. In order to ensure the completeness of locking, the fitting bush 35 and the fitting bush 57 can be provided with locking protrusions (not shown).

[terminal fittings 40]

The terminal metal fitting 40 has a socket-type form as a whole, and as shown in FIG. 1( b ), a contact 41 is integrally provided at the tip. The contact 41 is elastically deformable and thin, and has a U-shaped return 42 at its tip. When the terminal fitting 40 is held at a predetermined position in the cavity 15 of the inner housing 10 , the tip end portion of the folded back 42 protrudes a little to the outside from the connection opening 151 .

The terminal metal piece 40 is made of a metal material with excellent electrical conductivity and elasticity, such as copper alloy.

[Outer shell 50]

As shown in FIG. 1( a ), the outer case 50 holds the circuit board 60 and is fitted into the inner case 10 . The outer casing 50 can also serve as a part of the housing of the electronic device.

The outer casing 50 has an accommodating cavity 51 that accommodates the inner casing 10 . The accommodating chamber 51 opens at the front end of the outer case 50 , is formed in a tapered shape such that the opening area of the longitudinal section becomes narrower toward the rear end, and faces the first guide surface 53 and the second guide surface 54 .

The first guide surface 53 and the second guide surface 54 form a predetermined angle and cross each other. This intersecting angle substantially coincides with the angle formed by the guide surfaces 17 of the first movable case 11 and the second movable case 12 of the inner case 10 after fitting. If the inner housing 10 is inserted into the housing cavity 51 of the outer housing 50, the respective fitting blocks 19 of the first movable housing 11 and the second movable housing 12 will move along the first guide surface 53 and the second guide surface 54. each sliding, while advancing toward the depth of the accommodating chamber 51. The first movable housing 11 and the second movable housing 12 are gradually closed as they advance toward the depth of the accommodating chamber 51 .

A fitting groove 55 is formed at the intersection of the first guide surface 53 and the second guide surface 54. When the inner housing 10 is inserted into the depth of the accommodating cavity 51 and the fitting is completed, the first movable housing 11 will be fitted. The fitting block 19 and the fitting block 19 of the second movable housing 12 are fitted together in the fitting groove 55 .

[Explanation of the fitting process]

Next, the process of fitting the inner case 10 and the outer case 50 to each other will be described with reference to FIGS. 3 to 5 . In addition, in the inner case 10 , the terminal metal fitting 40 is held at a predetermined position in the cavity 15 , and the waterproof packing 20 and the cover 30 are assembled.

Before performing the fitting operation, the inner housing 10 is positioned in the accommodation cavity 51 of the outer housing 50 . The premise of this positioning is that the circuit board 60 held by the outer casing 50 is at a position capable of being inserted between the first movable casing 11 and the second movable casing 12 . Afterwards, the inner housing 10 is pushed in toward the depth of the accommodating cavity 51 . At the initial stage of fitting, as shown in FIG. 3 , the first movable case 11 and the second movable case 12 are most opened.

When the inner case 10 is pushed further into the housing cavity 51 , the front end side of the circuit board 60 is inserted between the first movable case 11 and the second movable case 12 as shown in FIG. 4 . On the other hand, the fitting block 19 of the first movable case 11 is guided while sliding along the first guide surface 53 , and the fitting block 19 of the second movable case 12 is guided while sliding along the second guide surface 54 . Guided, the first movable housing 11 and the second movable housing 12 are closed compared to the initial one. However, since there is a gap sufficiently exceeding the thickness of the circuit board 60 between the first movable case 11 and the second movable case 12 , the terminal metal fitting 40 does not come into contact with the circuit board 60 from the beginning.

When the inner case 10 is further pushed in, as shown in FIG. 5 , the first movable case 11 and the second movable case 12 are closed, and the terminal metal fitting 40 approaches the circuit board 60 . At the rear end side of the inner case 10 , the weather strip 24 of the waterproof seal 20 abuts against the inner wall of the fitting bush 57 of the outer case 50 , and the fitting bush 35 of the inner case 10 covers the fitting bush 57 rear end side.

When the inner housing 10 is further pushed into the depth of the housing chamber 51, the fitting completion position shown in FIG. 1 is reached. Then, the terminal metal fitting 40 held by the first movable case 11 is in contact with the conductive pattern 65 on the surface 61 of the circuit board 60 , and the terminal metal fitting 40 held by the second movable case 12 is in contact with the back surface 63 of the circuit board 60 . The conductive pattern 65 is in contact. Each terminal metal piece 40 starts contacting the conductive pattern 65 at a predetermined position slightly before reaching the mating completion position, and maintains this state and continues contacting until the fitting completion position to achieve the effect of wiping. In addition, the contact piece 41 of each terminal metal fitting 40 is elastically deformed by being pushed against the circuit board 60 . By the reaction force of the elastic deformation, a force in a direction to be opened acts between the first movable casing 11 and the second movable casing 12 .

In addition, when the fitting is completed, the fitting pieces 19 of the first movable casing 11 and the second movable casing 12 are inserted into the fitting groove 55 . Since the force to be opened acts on the first movable casing 11 and the second movable casing 12 , each fitting block 19 is pushed against the upper wall 55 a and the lower wall 55 b facing the fitting groove 55 . The pushing force helps to prevent the inner housing 10 from falling out of the accommodating cavity 51 . However, in this embodiment, it is also possible to prevent the inner housing 10 from falling out of the housing cavity 51 by providing a locking mechanism between the cover 30 and the outer housing 50 .

In addition, when the fitting is completed, the sealing strip 24 of the waterproof seal 20 is in close contact with the inner wall of the fitting bushing 57 of the outer casing 50 , thereby preventing water from entering the accommodating cavity 51 . Then, when the fitting is completed, the fitting bush 35 of the cover 30 covers the periphery of the fitting bush 57 .

[Effect of Embodiment]

Next, effects by the card edge connector 1 will be described.

Since the card edge connector 1 arranges a plurality of terminal metal parts 50 in two rows on one side of the circuit board 60, it can achieve multipolarity. The terminal metal fittings 40 can be arranged in two rows in this way because the terminal metal fittings 40 are inclined relative to the circuit board 60 . The terminal metal fittings 40 can also be arranged in three or more rows by using a method of making the terminal metal fittings 40 contact the circuit board 60 at an inclination.

Next, with regard to the card edge connector 1, the terminal metal fitting 40 retracts relative to the circuit board 60 until the fitting of the inner housing 10 and the outer housing 50 is completed, and the terminal metal fitting 40 starts at a predetermined position slightly before reaching the mating completion position, and the terminal metal fitting The member 40 is in contact with the conductive pattern 65 of the circuit substrate 60 .

Therefore, in most of the range of the fitting process, the inner housing 10 is not subjected to the reaction force caused by the contact between the terminal metal piece 40 and the circuit board 60, so that the card edge connector 1 can be multi-polarized, and can reduce the The force required to insert the inner housing 10 into the accommodation cavity 51 . In addition, the predetermined position at which the terminal metal fitting 40 comes into contact with the conductive pattern 65 can be arbitrarily set in consideration of the effect of reducing the force of inserting the inner housing 10 , the aforementioned frictional contact effect, and the like.

In addition, with regard to the card edge connector 1 , it is possible to prevent the metal terminal 40 from being damaged by abutting against the top end of the circuit board 60 , and to prevent the metal terminal 40 from sliding along the surface 61 and the back 63 of the circuit board 60 , and to prevent the conductive pattern 65 from peeling off.

The above effect is achieved by satisfying the following necessary conditions: the inner housing 10 is configured in such a manner that the first movable housing 11 and the second movable housing 12 can be opened and closed, and the two housings are closed as the fitting proceeds. .

The preferred embodiments of the present invention have been described above, but the configurations listed in the above-mentioned embodiments can be selected or changed to other configurations as appropriate unless the gist of the present invention is deviated from.

For example, with regard to the card edge connector of this embodiment, although the example in which the terminal metal parts are in contact with both the surface and the back side of the circuit board has been described, the present invention can also be applied to the case where only multiple rows of terminal metal parts are arranged on either side. piece of card edge connector.

In addition, the waterproof packing 20 and the cover 30 are optional elements of the present invention, and may not be used depending on the application object.

In addition, although the contact used for the terminal metal fitting of the present invention preferably has a U-shaped fold, it does not matter in its form as long as it has moderate elasticity.

Symbol Description

1 card edge connector

10 inner shell

11 first movable housing

12 second movable housing

13 Oscillating axis

15f, 15r (15) cavity

16 clamping surface

17 guide surface

18 back face

19 chimeric blocks

20 waterproof seals

30 caps

40 Terminal Metal Parts

41 contacts

42 turn back

50 casings

51 cavity

53 first guide surface

54 second guide surface

55 fitting groove

60 circuit substrate

61 surfaces

63 back

65 conductive patterns

Claims (as amended under Article 19 of the Treaty)

1. A card edge connector having:

a second case holding a circuit substrate on which a plurality of conductive patterns are formed in multiple rows along one edge; and

a first housing fitted with the second housing and holding terminal metal fittings arranged in multiple columns electrically connected to the respective conductive patterns of the circuit board,

It is characterized in that,

The terminal metal fittings are inclined in the same direction with respect to the circuit board and arranged in multiple rows along the fitting direction.

2. The card edge connector of claim 1,

The first housing has:

a first movable case disposed on a surface side of one side of the circuit board; and

a second movable case disposed on the other surface side of the circuit board,

the first movable case and the second movable case are connected to each other so as to be swingable,

The second housing has:

an accommodating chamber that accommodates the first movable case and the second movable case and has a mechanism for closing the first movable case and the second movable case toward a fitting completion position boot surface.

3. The card edge connector of claim 2,

The terminal metal piece

is separated from the circuit substrate until a predetermined position before reaching the completion position,

From the predetermined position to the completion position, it is in continuous contact with the conductive pattern.

4. A card edge connector according to any one of claims 1 to 3, provided with a watertight seal,

The waterproof seal is provided on the rear side where the electric wires connected to the terminal metal parts are drawn out,

And seal the rear end of the first housing and the space between the first housing and the second housing.

5. The card edge connector according to any one of claims 1 to 4,

The terminal metal piece

A contact folded back in a U-shape is provided at a tip that is in contact with the conductive pattern.

Claims (5)

1. a card edge connector, possesses:

Second housing, it is formed with the circuit substrate of multiple conductive pattern keeps along an edge multiple row; And

First housing, it is mutually chimeric with described second housing, and to each multiple row electrically connected in the described conductive pattern of described circuit substrate the terminal metal piece that arranges keep,

It is characterized in that,

Described terminal metal piece arranges in same direction obliquely relative to described circuit substrate.

2. card edge connector according to claim 1,

Described first housing possesses:

First movable housing, it is configured at the side, face of side of described circuit substrate; And

Second movable housing, it is configured at the side, face of opposite side of described circuit substrate,

Described first movable housing and described second movable housing can swingingly link mutually,

Described second housing possesses:

Holding chamber, it holds described first movable housing and described second movable housing, and has towards the chimeric guide surface completing position described first movable housing of Guan Bi and described second movable housing.

3. card edge connector according to claim 2,

Described terminal metal piece

It is separated by with described circuit substrate till commitment positions before completing position described in arriving,

Start to completing position described in arriving from described commitment positions, with described conductive pattern continuous contact.

4. the card edge connector according to any one in claim 1～claim 3, possesses waterproof seal,

Described waterproof seal is located at the rear side drawn by the electric wire being connected to described terminal metal piece,

And seal between rear end and described first housing and described second housing of described first housing.

5. the card edge connector according to any one in claim 1～claim 4,

Described terminal metal piece

The contact turned back in U-shaped manner is set on the top contacted with described conductive pattern.