CN204558704U - Bayonet connector - Google Patents

Abstract

The utility model discloses a card edge connector, which comprises a longitudinally long base, a plurality of conductive terminals and locking pieces accommodated in the base, the base is provided with ends located at both ends of the The electronic card accommodating slot that runs through its front end face, the end is provided with a holding slot for holding the locking piece, and the locking piece has a holding arm that interferes and is held in the holding slot and is elastically buckled in the holding slot The elastic buckle arm, the holding arm and the elastic buckle arm both extend along the front and rear direction and are arranged at intervals along the up and down direction; the locking member is stably fixed on the base by means of the holding arm and the elastic buckle arm, and then Guarantee product quality.

Description

card edge connector

【Technical field】

The utility model relates to a card edge connector, in particular to a card edge connector with locking parts.

【Background technique】

The Chinese Utility Model Patent No. CN 202695761 U announced on January 23, 2013 discloses a card edge connector, which includes a base, conductive terminals, and a locking member, and the two ends of the base are forward The protrusion forms two arms, and the locking piece and the arms jointly lock the electronic card inserted into the card edge connector, so that the conductive terminal and the electronic card are electrically connected stably. The locking piece is provided with a holding arm with barbs, and the base is provided with a holding groove, and the locking piece is held on the base through the interference generated by the barbs and the wall surface of the holding groove.

However, there is a risk of the locking member being disengaged from the card edge connector due to the failure of the barbs of the retaining arm.

Therefore, it is desirable to design an improved card edge connector to overcome the above problems.

【Content of utility model】

The technical problem to be solved by the utility model is to provide a card edge connector in which the locking part is not easy to disengage.

In order to solve the above problems, the utility model card edge connector adopts the following technical solutions: a card edge connector, which includes a lengthwise base, a number of conductive terminals and locking pieces accommodated in the base, the base There is an electronic card receiving slot located at the ends of its longitudinal two ends and passing through its front end face forward, the end is provided with a holding slot for holding the locking piece, and the locking piece has an interference holding in the holding slot The holding arm inside and the elastic buckle arm elastically buckled in the holding groove, both the holding arm and the elastic buckle arm extend along the front-back direction and are arranged at intervals along the up-down direction.

Further, the locking member includes a main body, the main body has a first end and a second end opposite to each other, the first end is extended with a locking part for locking the electronic card, the holding arm and The elastic clasp arm extends backward from the second end.

The further feature is that the elastic buckle arm is arranged above the holding arm and forms an included angle with the holding arm for the elastic deformation of the elastic buckle arm, and the elastic buckle arm The components are elastically deformed during assembly to the base, and return to deformation after assembly to a preset position.

The further feature is that the length of the elastic buckle arm is shorter than that of the holding arm.

Further, the holding groove is recessed and formed on the front end surface of the end, which includes a first holding groove that is away from the front end surface of the end and holds the holding arm and is connected to the first holding groove. And hold the second holding groove of the elastic buckle arm; the holding arm is provided with a number of barbs, and these barbs form an interference effect with the groove wall of the first holding groove.

A further feature is that a hook is provided at the free end of the elastic buckle arm, and a limit slot for the hook to be buckled is opened upward in the second holding groove.

The further feature is that the limiting groove penetrates through the groove wall of the second holding groove to form a limiting hole.

A further feature is that a step-shaped resisting portion is formed at the connection between the main body portion and the elastic buckle arm, so as to limit the insertion depth of the locking member into the holding groove.

A further feature is that the upper surface of the hook part is flush with the upper surface of the resisting part of the main body part.

The further feature is that the card edge connector is also provided with a plate fastener to prevent the excessive expansion of the locking member, and the two ends of the base are provided with installation grooves for installing the plate fastener, and the plate fastener The free end is provided with a protrusion, and the installation groove is provided with an accommodating hole for accommodating the protrusion.

Compared with the prior art, the utility model has the following beneficial effects: the lock clip is not only provided with a holding arm that interferes and is held in the holding groove, but also is provided with an elastic buckle arm that is elastically buckled in the holding groove, which reduces the locking force of the lock. risk of parts detaching from the base.

【Description of drawings】

Fig. 1 is a perspective view of the card edge connector of the present invention;

Fig. 2 is an exploded view of the card edge connector shown in Fig. 1;

Fig. 3 is a partial exploded view of the right side of the card edge connector shown in Fig. 1 from another angle;

Fig. 4 is a perspective view of the locking clip and the board firmware;

Fig. 5 is a partial exploded view of the right side of the card edge connector shown in Fig. 1;

Fig. 6 is a cross-sectional view along line A-A shown in Fig. 1 .

【Detailed ways】

Please refer to FIG. 1 , the card edge connector 100 of the present invention is used to electrically connect an electronic card (not shown) to a circuit board (not shown). The card edge connector 100 mainly includes an elongated base 1, a number of conductive terminals 2 accommodated in the base 1, a locking member 3 for locking an electronic card (not shown), and a stable base 1 to prevent Locking member 3 is excessively flared board member 4 .

Referring to Fig. 1 and Fig. 2, the base 1 includes an electronic card accommodating groove 10 passing through its front end face forward, end portions 13 located at both longitudinal ends of the base 1, and the first upper and lower sides of the accommodating groove 10. One side wall 11, second side wall 12. Both side walls are provided with terminal receiving grooves 14 to accommodate the conductive terminals 2, and a key buckle 15 protrudes between the two side walls, and the key buckle 15 is biased at one end of the base 1 to prevent electronic cards (not shown) Reverse insertion. The conductive terminal 2 includes a contact portion 21 extending into the receiving groove 10 and a connecting portion 22 extending out of the base 1 . The front end of the end portion 13 is concavely provided with a holding groove 131 for holding the latch 3 and a mounting groove 132 for mounting the plate fixture 4 , and the holding groove 131 is located above the mounting groove 132 .

The locking member 3 includes a main body portion 30 with opposite first and second ends, a locking portion 31 extending from the first end and used for locking an electronic card (not shown), and a locking portion 31 extending from the second end. The retaining arm 32 and the elastic clasp arm 33 extend backward. The locking part 31 has a first protruding piece 311, a second protruding piece 312, and a third protruding piece 313, and these protruding pieces are bent from the upper and lower side edges of the locking part 31 to the electronic card (not shown) accommodating space Extended, the two ends 13 of the base 1 protrude forward respectively to form two arms 16 to support the locking member 3, and two lugs 161 are symmetrically arranged inwardly from the front ends of the two arms 16, and the locking The component 3 is attached to the support arm 16 , the first protruding piece 311 and the second protruding piece 312 of the locking portion 31 are buckled on the upper surface of the lug 161 , and the third protruding piece 313 is buckled on the inner surface of the support arm 16 .

Please refer to FIG. 3 , the board fixture 4 includes a mounting portion 41 held in the mounting groove 132, a welding portion 42 for welding and fixing the card edge connector 100 on a circuit board (not shown), and the welding portion 42 is recessed with a through groove. 420, the contact area between the solder and the board fixture 4 can be increased to increase the welding strength. The installation portion 41 of the board member 4 is provided with a protrusion 411 , and the installation groove 132 is provided with a receiving hole 133 passing through the groove wall to receive the protrusion 411 . When the board firmware 4 is assembled into the installation groove 132 backward along the insertion direction of the electronic card (not shown), the rear end of the installation part 41 is first in contact with the front end of the installation groove 132, and the end faces of the two contact ends are all provided with guide surfaces, which is beneficial The automatic machine assembly is realized, and then the protrusion 411 slides to the receiving hole 133 along the wall surface of the installation groove 132 , and the installation part 41 is accommodated in the installation groove 132 , thereby realizing the fixing of the board fixture 4 .

Referring to Fig. 2 and Fig. 4, an L-shaped clasp 5 is horizontally arranged on the lower side edge of the locking part 31. The clasp 5 has a first clasp arm 51 and a second clasp arm 52, and the first clasp arm 51 faces the electronic card ( (not shown) extends in the insertion direction, and the second arm 52 is perpendicular to the locking portion 31 and connected to the locking portion 31 . The board fixture 4 is provided with a base 40 connecting the mounting portion 41 and the welding portion 42 , and the base 40 extends toward the electronic card (not shown) withdrawal direction to form a bump 43 abutting against the second buckle arm 52 . During the insertion and extraction of the electronic card (not shown), the locking member 3 and the support arm 16 are deformed outward under the joint force, and the first buckle arm 51 gradually approaches the board member 4. When the two are in contact, the board member 4 A reverse force is generated on the clasp 5 to prevent the locking member 3 and the support arm 16 from further expanding outwards, and prevent the locking member 3 and the support arm 16 from being damaged due to excessive bending.

5 and 6, the holding arm 32 is provided with a number of barbs 321, the length of the elastic buckle arm 33 of the locking member 3 is set shorter than the holding arm 32, and the elastic buckle arm 33 is arranged on the top of the holding arm 32. An included angle is formed between the buckle arm 33 and the holding arm 32 for elastic deformation of the elastic buckle arm 33 . The holding slot 131 includes a first holding slot 1311 away from the front end of the end portion 13 for holding the holding arm 32 , and a second holding slot 1312 connected to the first holding slot 1311 and holding the elastic buckle arm 33 . The free end of the elastic buckle arm 33 is provided with a hook portion 331, and the second holding groove 1312 is upwardly provided with a limiting groove for the hook portion 331 to snap into. In this embodiment, the limiting groove is set to pass through the second holding groove 1312 The limit hole 134 on the groove wall, the design of this through hole helps to rework the lock clip 3 that is not pressed in place during the automatic machine assembly process of the lock clip 3 or during the use of the customer, that is, use The tool pushes against the hook portion 331 exposed on one side of the limiting hole 134 , and releases the buckling effect between the hook portion 331 and the limiting hole 134 , so that it is easier to pull out the locking member 3 and reassemble it.

Please refer to FIG. 5 and FIG. 6 , in this embodiment, the main body 30 forms a step-shaped resisting portion 332 at the joint with the elastic buckle arm 33 to resist against the front end surface of the end portion 13 , the resisting portion 332 The design can limit the insertion depth of the lock clip 3. In this embodiment, the upper surface of the resisting portion 332 is flush with the upper surface of the hook portion 331, and the upper surface of the hook portion 331 is disposed in the limiting hole 134, so that the assembly of the locking member 3 is easier and the locking member 3 and the holding groove 131 are more stable.

When the locking member 3 is inserted into the holding groove 131 backward along the insertion direction of the electronic card (not shown), the rear ends of the holding arm 32 and the elastic buckle arm 33 are inserted first, and then the elastic buckle arm 33 and the holding arm 32 are opposite to the holding groove 131 At this time, the hook portion 331 of the elastic buckle arm 33 is elastically deformed due to being squeezed by the groove wall of the second holding groove 1312 and approaching the holding arm 32 until the hook portion 331 slides into and is fastened to the limiting hole. 134, the elastic buckle arm 33 is free to open and recover from deformation. At the same time, the resisting portion 332 resists the front end surface of the end portion 13, and the holding arm 32 is positioned on the first holding groove 1311 through the interference of several barbs 321 and the groove wall of the first holding groove 1311. The preset position of the groove 1311.

In this embodiment, the rear ends of the holding arm 32 and the elastic buckle arm 33 and the contact end surfaces of the front end of the holding groove 131 are all provided with guide surfaces, which is beneficial to the smooth automatic assembly of the holding arm 32 and the elastic buckle arm 33 .

The locking member 3 is not only provided with a holding arm 32 that interferes and is held in the holding groove 131, but also is provided with an elastic buckle arm 33 that is elastically buckled in the holding groove 131. This design reduces the locking member 3 because the holding arm 32 is barbed. 321 failure and the risk of breaking away from the base 1, ensuring product quality.

The elastic buckle arm 33 and the retaining arm 32 of the locking member 3 are both connected to the main body 30 . This structure is beneficial to increase the connecting area of the retaining arm 32 , the elastic buckle arm 33 and the main body 30 , thereby increasing the connection strength. The elastic buckle arm 33 and the holding arm 32 both extend in the front-rear direction and are arranged at intervals in the up-down direction, and the elastic buckle arm 33 is elastically deformed by approaching the holding arm 32. This design can ensure that the locking member 3 is not inserted during the assembly process. collapse. The length of the elastic button arm 33 is set to be shorter than that of the holding arm 32 , which can reduce the risk of the elastic button arm 33 being bent and damaged by unexpected force. The above designs are all conducive to realizing the automatic assembly of the lock clip 3 .

This implementation mode is a preferred implementation mode of the utility model, of course, the utility model can also adopt other implementation modes, which will not be repeated here.

Claims (10)

1. a bayonet connector, it comprise lengthwise pedestal, be contained in some conducting terminals in pedestal and latch; Described pedestal is provided with the end being positioned at its lengthwise two ends, the electronic cards accepting groove running through forward its front end face, described end is provided with the holding slot of latch described in fixing, it is characterized in that: described latch has interferes the fixing arm that is immobilizated in holding slot and elastic buckles to be held in elastic fastening arm in holding slot, and described fixing arm and elastic fastening arm extend and interval setting along the vertical direction all along the longitudinal direction.

2. bayonet connector as claimed in claim 1, it is characterized in that: described latch comprises main part, described main part has relative first end and the second end, and described first end is extended with the pintle hook lock portion of snap close electronic cards, and described fixing arm and described elastic fastening arm extend back from described second end.

3. bayonet connector as claimed in claim 2, it is characterized in that: described elastic fastening arm be arranged at described fixing arm top and and form one between described fixing arm for the angle of described elastic fastening arm strain, described elastic fastening arm is assembled in the process of pedestal at described latch and elastic deformation occurs, and recovers deformation after being assembled into predeterminated position.

4. the bayonet connector as described in claim 1 or 3, is characterized in that: the length more described fixing arm of described elastic fastening arm is short.

5. bayonet connector as claimed in claim 1, it is characterized in that: the recessed formation of the front end face of described holding slot in described end, it comprises away from described end front end face and the first holding slot of fixing arm described in fixing and being connected and the second holding slot of elastic fastening arm described in fixing with described first holding slot; Described fixing arm is provided with some hangnails, and the cell wall of these hangnails and described first holding slot forms interference effect.

6. the bayonet connector as described in claim 3 or 5, is characterized in that: the free terminal of described elastic fastening arm is provided with hook portion, and described second holding slot upwards offers the stopper slot buckled into for described hook portion.

7. bayonet connector as claimed in claim 6, is characterized in that: described stopper slot runs through the cell wall of described second holding slot and forms spacing hole.

8. bayonet connector as claimed in claim 7, is characterized in that: described main part forms a step-like blocking part in the junction be connected with described elastic fastening arm, inserts the degree of depth of described holding slot in order to limit described latch.

9. bayonet connector as claimed in claim 8, is characterized in that: the upper surface of described hook portion and the blocking part upper surface flush of described main part.

10. bayonet connector as claimed in claim 1, it is characterized in that: described bayonet connector is also provided with the plate firmware preventing from described latch from crossing being outside one's consideration, described pedestal two ends are provided with the mounting groove installing described plate firmware, this plate firmware is provided with projection, and described mounting groove is provided with the accommodation hole of this projection accommodating.