CN201259938Y

CN201259938Y - Card edge connector

Info

Publication number: CN201259938Y
Application number: CNU2008201192206U
Authority: CN
Inventors: 陈怀权
Original assignee: Lotes Guangzhou Co Ltd
Current assignee: Lotes Guangzhou Co Ltd
Priority date: 2008-06-19
Filing date: 2008-06-19
Publication date: 2009-06-17
Anticipated expiration: 2018-06-19

Abstract

The utility model relates to a card edge connector for connecting an electronic card to a circuit board; the card edge connector comprises a base body and a plurality of terminals; a lengthwise slot for being inserted by the electronic card is arranged on the base body; a plurality of containing grooves are arranged at the lower side of the lengthwise slot, and a supporting block is arranged in each containing groove; a plurality of terminals; each terminal is provided with a locating part fixed in the containing groove, an elastic arm extended from the locating part and a supporting arm obliquely extended from the elastic arm; a contact part is formed at the junction position of the supporting arm and the elastic arm for being pressed and connected by the electronic card; when the supporting arm is pressed at the contact part, the supporting arm moves and supports the supporting block and slides relatively along the supporting block. The contact part of the card edge connector has the same compactness (contact value) when contacting the electronic card, thus meeting high frequency characteristic of the card edge connector and ensuring the electrical connection between the card edge connector and the electronic card.

Description

Bayonet connector

[technical field]

The utility model relates to a kind of bayonet connector.

[background technology]

Please refer to Fig. 1, the cutaway view that matches for bayonet connector a1 in the known techniques and electronic cards a2.This bayonet connector a1 comprises a pedestal a10, which is provided with a slot a100 for described electronic cards a2 grafting, and this slot a100 downside is provided with a plurality of accepting groove a101, and a plurality of terminal a11 corresponding inserted wherein.Each terminal a11 is provided with a base portion a111, extends an elastic arm a112 by this base portion a111, further extend one by this elastic arm a112 and support arm a113, and this supports formation one contact site a114 between arm a113 and this elastic arm a112.This electronic cards a2 inserts this slot a100 from this slot a100 opening part in the inclination mode, and a114 contacts with this contact site, push this electronic cards of rotation a2 then, after this moment, contact site a114 was subjected to the pressure of electronic cards a2, will and will move down with respect to this electronic cards a2 slip, elastic deformation will take place in the elastic arm a112 that links to each other with this contact site a114 simultaneously, and the arm a113 that supports that links to each other with this contact site a114 moves down.Because this supports after arm a113 moves down, and without any the structure that offsets with it, excessively moves down easily so this supports arm a113 among the accepting groove a101, cause terminal a11 to deform, in addition, only flexible arm a112 provides a holding power to contact site a114, also causes the elastic fatigue of terminal a11 easily.

Please refer to Fig. 2, in order to improve above-mentioned disappearance, another kind of bayonet connector b1 in the known techniques, be provided with a platform b102 in its slot b100, after the time that contacts as electronic cards b2 inclination insertion slot b100 and with this contact site b114, push this electronic cards of rotation b2, this moment, contact site b114 was subjected to the pressure of electronic cards b2, will and will move down with respect to this electronic cards b2 slip, elastic deformation will take place in this elastic arm b112 simultaneously, this supports arm b113 and moves down, is held on this platform b102, and along this platform horizontal slip certain distance.But there is following defective in this bayonet connector b1: after electronic cards b2 is pressed into the fixed position, because the tolerance issues of some terminal b11, it supports arm b113 can not touch this platform b102, therefore, touch supporting arm b113 and can providing a holding power of platform b102 to this contact site 114, do not contact the power that then can not provide support of this platform b102, do not improve the problems referred to above fully, again because electronic cards b2 is different with the tightness degree of contact site 114 contacts, cause the impedance difference between the terminal b11, influenced the high frequency characteristics of this bayonet connector b1, simultaneously, oxide layer on this part contact site b114 can not be by striking off with the slide relative of electronic cards b2, and then influence the electrical connection characteristic of this bayonet connector b1.

Therefore be necessary to design a kind of new bayonet connector, to overcome above-mentioned defective.

[utility model content]

The purpose of this utility model is to design a kind of new bayonet connector, can make the contact site of its terminal identical with respect to the contact value of electronic cards.

The utility model bayonet connector, in order to an electronic cards is connected on the circuit board, comprising: a pedestal which is provided with a lengthwise slot for described electronic cards insertion, the downside of this lengthwise slot is provided with a plurality of accepting grooves, is provided with a holding block in each described tank; A plurality of terminals, each described terminal all has one this terminal is fixed in location division, an elastic arm that extends to form from this location division in this accepting groove, and one one support arm from what this elastic arm diagonally extending formed, this supports arm and this elastic arm joint forms a contact site for described electronic cards crimping, described support arm when the contact site pressurized displacement against this holding block, and along this holding block slide relative.

Compared with prior art, be provided with a holding block in the accepting groove of the utility model bayonet connector, this support arm when the contact site pressurized displacement against this holding block, and along this holding block slide relative, so this supports arm and can provide with holding power this contact site, and this supports the restriction that arm is not moved down, therefore make these contact sites identical with the tightness degree (i.e. contact value) of this electronic cards contact, thereby the impedance between each terminal is equated, satisfy the high frequency characteristics of this bayonet connector, simultaneously also make the oxide layer on the contact site guarantee the electric connection between this bayonet connector and the electronic cards by striking off with the slide relative of electronic cards.

[description of drawings]

Fig. 1 is the cutaway view that bayonet connector cooperates with electronic cards in the known techniques;

Fig. 2 is the cutaway view that another kind of bayonet connector cooperates with electronic cards in the known techniques;

Fig. 3 is the schematic perspective view that has the utility model bayonet connector of part terminal;

Fig. 4 is the schematic perspective view of another angle of bayonet connector shown in Figure 3;

Fig. 5 is the terminal of bayonet connector shown in Figure 3 and the echelon sectional view that pedestal decomposes;

Fig. 6 is the echelon sectional view that the terminal of bayonet connector shown in Figure 3 combines with pedestal;

Fig. 7 is bayonet connector inserts state lower edge A-A direction in electronic cards a cutaway view;

Fig. 8 is the cutaway view of bayonet connector in electronic cards stationary state lower edge A-A direction.

[embodiment]

Below in conjunction with the drawings and specific embodiments the utility model bayonet connector is described further.

Please refer to Fig. 3 and Fig. 4, be the overall schematic of the utility model bayonet connector 1.This bayonet connector 1 is in order to be electrically connected to an electronic cards 4 (as Fig. 7) (figure does not show) on the circuit board, and it comprises a pedestal 10, a plurality of the first terminal 21, a plurality of second terminal 22 and one group of clamping device 30.

Described pedestal 10 is the lengthwise setting, be provided with a lengthwise slot 100 in it, these the first terminals 21 and these second terminals 22 and this pedestal loose fit (can certainly be interference engagement), be staggered relatively respectively in these lengthwise slot 100 both sides, and these the first terminals 21 are located at lengthwise slot 100 downsides.

Described pedestal 10 also comprises an antetheca 11, a rear wall 12, a roof 13 and a diapire 14 relative with this antetheca 11.This lengthwise slot 100 is recessed to form from this antetheca 11, uses for described electronic cards 4 grafting (as Fig. 7).These lengthwise slot 100 both sides are provided with a plurality of jubes 110 perpendicular to this lengthwise slot 100, form first accepting groove 111 between every adjacent downside two jubes 110, these first accepting grooves 111 comprise respectively one first location notch 1110 with link to each other with this first location notch 1110 one first support wall 1113, first support wall 1113 and in body, extend to form a holding block 1111 from this, two adjacent sidewalls of this holding block 1111 are formed with a butting section 1112, in addition, also be provided with a stop block 101 in these first accepting grooves 111, this stop block 101 is separated from each other with this holding block 1111, and these stop block 101 positions are higher than described holding block 1111 positions, in addition, this stop block 101 and this holding block 1111 have a gap (certainly in the horizontal direction, also this gap can be set, only need this holding block 1111 and this stop block 101 to be separated from each other, and both positions have the certain altitude difference and get final product).

Described rear wall 12 is arranged with and is formed with a plurality of second accepting grooves 112, and it is located at the upside of this lengthwise slot 100, and these first accepting grooves 111 and these second accepting groove, 112 relative being crisscross arranged.Be provided with a Horizontal Branch support part 1120 in these second accepting grooves 112, also convex with a positioning rib 1121 on the jube 110 of one side, in order to locate described second terminal 22.

This diapire 14 is provided with two projections that are used for locating 140, and also be recessed to form on the diapire 14 a plurality of be out of shape because of thickness is excessive when being used to reduce pedestal 10 moulding escape hopper 141, and this is drawn hopper and is connected with described first accepting groove 111.

Please refer to Fig. 5, be the stagewise cutaway view exploded view of part bayonet connector 1.This first terminal 21 comprises one first location division 211, one elastic arm 212 that extends to form from this first location division 211, in order to the elasticity of this first terminal to be provided, and one one support arm 213 from what this elastic arm 212 diagonally extendings formed, and this top that supports arm 213 forms one first contact site 214 with the described electronic cards 4 of electrical contact (as Fig. 7).This supports arm 213 and further extends one first stop section 215, its can block in these stop block 101 places.These first location division, 211 other ends also extend one with circuit board (figure do not show) first weld part 216 of welding mutually.This second terminal 22 comprises one second location division 221, and the one end extends one second contact site 222, and this second contact site 222 also extends one second stop section 223, and these second location division, 221 other ends extend one second weld part 224.

Please refer to Fig. 3 and Fig. 4, this bayonet connector 1 also comprises one group of clamping device 30, and it is located at the two ends of this pedestal 10 respectively.This clamping device 30 comprises in order to the fixing rubber-like holding section 31 of electronic cards 4 (as Fig. 7), and with these holding section 31 stable holding parts 32 that are welded on the circuit board (figure does not show).

Please refer to Fig. 4, Fig. 5 and Fig. 6, the assembling process of this bayonet connector is as follows: earlier these the first terminals 21 are inserted in each first accepting groove 111 one by one, make described first stop section 215 blocks in below this stop block 101, first location division 211 is placed in described first location notch 1110, and last part is resisted against on described first abutment walls 1113, and described first weld part 216 exposes this first accepting groove 111; These second terminals 22 are inserted in described second accepting groove 112 by these pedestal 10 rear walls 12 forward walls 11 directions are corresponding respectively, this second stop section 223 is held on this second support portion 1120, this second location division 221 matched with this fixing rib 1121 makes this second terminal 22 be arranged in second accepting groove 112, and this second weld part 224 is revealed in this second accepting groove 112 equally; Then these clamping devices 3 are installed in the two ends of this pedestal 10.

Please refer to Fig. 3, Fig. 4, Fig. 7 and Fig. 8, during use, earlier two projections, 140 correspondences of this bayonet connector 1 are inserted these circuit boards location holes (not shown) of (figure does not show), this bayonet connector 1 is installed in the precalculated position on this circuit board (figure does not show), then these first weld parts 216, second weld part 224 and holding parts 32 are soldered to this circuit board (figure does not show).Then described electronic cards 4 is tilted to insert from the opening of this lengthwise slot 100, make that the connection pad (figure does not show) on the two sides of this electronic cards 4 can contact these first contact site 214 and these second contact sites 222 respectively.Then, inwardly promote this electronic cards 4 again, arriving until it should be from long slot 100 bottom, push this electronic cards 4 to this circuit board (figure does not show) direction at last, make it be held in the fixed position by described holding section 31, in this position, electronic cards 4 roughly with described circuit board place plane parallel.

Pushing in the process of this electronic cards 4 to this circuit board (figure does not show) direction, this electronic cards 4 of the outer side contacts of this first terminal 21, because first contact site 214 of this first terminal 21 is subjected to the pressure of this electronic cards 4, this first contact site 214 will move down along with pressing down of this electronic cards 4, simultaneously, strain will take place downwards in described elastic arm 212, the described arm 213 that supports also will move down and will finally be held on the butting section 1112 of this holding block 1111, when electronic cards 4 continues to push downwards, this supports arm 213 and will continue to move down with respect to this holding block 1111, this holding block 1111 is held in this and first supports arm 213 inboards, and and this butting section 1112 offsets and is held in this and supports between arm top, 213 ground and the end, so this end that supports arm 213 is not restricted, be that its end can continue downwards to move, make all the first terminals 21 can both be held on this holding block 1111, these first contact sites 214 all can closely contact with electronic cards 4, therefore electronic cards 4 is worth identical with contact between each contact site 214, impedance between each the first terminal 21 also can be identical, and the high frequency characteristics that the first terminal is 21 can not be affected.In addition, and the segment distance that on this electronic cards 4, slides, when sliding, these first contact sites 214 keep closely contacting with electronic cards 4, oxide layer on the contact site 214 of winning can be wiped off fully, thereby keep excellent electrical property connection between this bayonet connector 1 and the electronic cards 4.

Claims

1. a bayonet connector in order to an electronic cards is connected on the circuit board, is characterized in that, comprising:

One pedestal which is provided with a lengthwise slot and inserts for described electronic cards, and the both sides of this lengthwise slot are respectively equipped with a plurality of first accepting grooves and a plurality of second accepting groove, are provided with a holding block in each described first accepting groove;

A plurality of conducting terminals, it comprises a plurality of the first terminal and a plurality of second terminals that are located in respectively in described second accepting groove that are located in respectively in described first accepting groove, this the first terminal comprises one first location division, it cooperates with first accepting groove to locate this first terminal on pedestal, one elastic arm that extends to form from first location division, the elasticity of this first terminal is provided, and one one support arm from what this elastic arm diagonally extending formed, it forms one first contact site with this elastic arm joint and contacts described electronic cards with electrical, insert in the process of described lengthwise slot in electronic cards, the described first contact site pressurized moves down, simultaneously, describedly support arm distortion downwards and be held on the described holding block and along its tilt slide.

2. bayonet connector as claimed in claim 1 is characterized in that: also be provided with a stop block in described first accepting groove of each of pedestal, the described arm that supports extends to form a stop section, and this stop section and described stop block offset.

3. bayonet connector as claimed in claim 2 is characterized in that: described stop section block is in the lower surface of described stop block.

4. bayonet connector as claimed in claim 2 is characterized in that: described stop block and described holding block are separated.

5. bayonet connector as claimed in claim 2 is characterized in that: described holding block is positioned at the below of described stop block and has a gap in the horizontal direction.

6. bayonet connector as claimed in claim 1 is characterized in that: described holding block is held in the described inboard that supports arm.

7. bayonet connector as claimed in claim 1 is characterized in that: described holding block is held in the described upward position between its top and end that supports arm.

8. bayonet connector as claimed in claim 1 is characterized in that: described the first terminal is loose to be contained in described first accepting groove.

9. bayonet connector as claimed in claim 1 is characterized in that: described pedestal bottom is concaved with a plurality of hoppers of drawing, and this is drawn hopper and is connected with described first accepting groove.