CN108448276B - locking device - Google Patents

Abstract

The invention discloses locking devices for locking electronic cards, which have at least grooves and comprise 1 locking parts and fixing parts, wherein each locking part comprises a main body part and a pulling part, the main body part comprises a buckling part and a rd clamping part which extends from the main body part and is used for locking the groove, each fixing part comprises a second clamping part, and when the pulling part pulls the buckling part to be separated from the groove, the clamping part is positioned at the second clamping part.

Description

locking device

technical field

The invention relates to a locking device, in particular to an electronic card locking device.

Background technique

The existing electrical connector assembly for inserting an electronic card includes an insulating body fixed on the circuit board, the insulating body is provided with a central slot arranged along the longitudinal direction, and two sides of the central slot are provided with the central slot. A plurality of terminal slots connected to the slot, a plurality of conductive terminals are respectively accommodated in the plurality of the terminal slots, each of the conductive terminals has a contact portion exposed in the central slot for electrical connection with the electronic card The guide part is connected.

In order to hold the electronic card, the existing electrical connector assemblies are provided with locking devices on both sides of the insulating body. The existing locking devices are generally made of plastic materials. As the number of locks increases, the locking device is easily worn or broken and cannot work normally; at present, there are also locking devices made of metal on the market, which have high structural strength. The purpose of the card, but when the metal lock device is inserted or removed, one hand must turn the metal lock device to elastically deform it, while the other hand is used to insert or remove the card, but the card is inserted or removed. The card process is not easy to operate with one hand, so the metal locking device is less used.

Therefore, it is necessary to design an improved electrical connector to overcome the above problems.

SUMMARY OF THE INVENTION

In view of the problems faced by the background technology, the purpose of the present invention is to provide a locking device, which can position the locking member and the fixing member with one hand, so that after the locking portion is separated from the electronic card, The electronic card can be taken out with both hands, which is convenient for operation.

To achieve the above object, the present invention adopts the following technical means:

A locking device for locking an electronic card, the electronic card having at least one groove, comprising: a locking piece, the locking piece has a main body part and a pulling part, the main body part There is a buckle part, and a first clamping part is formed extending from the main body part, and the buckle part is used for locking to the groove; a fixing part, the fixing part has a second clamping part the first clamping part is positioned at the second clamping part when the latching part is pulled out of the groove by the pulling part.

Further, the buckle portion and the first holding portion are respectively located on opposite sides of the main body portion.

Further, the buckle portion extends in a direction close to the groove, and the first retaining portion extends in a direction away from the groove.

Further, there are two first holding portions, and the two first holding portions are respectively connected to the main body portion. Correspondingly, the fixing member has two second holding portions. The first holding portion and the second holding portion are respectively buckled, the first holding portion is a perforation, and correspondingly the second holding portion is a convex block, or the first holding portion is a The protruding block, correspondingly the second holding portion is a through hole.

Further, the locking member and the fixing member are both metal materials, the locking member has a holding portion extending downward from the main body portion, the holding portion is held on a plastic seat, and the plastic The seat is fixed to the fixing member.

Further, a stopper is located on the side of the main body part away from the buckle part, the stopper has a stopper part abutting against the main body part, and the pulling part is used to pull the When the buckle part is disengaged from the groove, the main body part exerts a force on the blocking part in a direction away from the groove, and when the first holding part is disengaged from the second holding part, the The blocking portion generates a restoring force to the main body portion.

Further, the locking member has a holding portion extending downward from the main body portion, and the blocking member is integrally formed by extending from the holding portion.

Further, the holding part has a first vertical part, a second vertical part and a third vertical part which are connected by bending in sequence, the first vertical part is upwardly connected to the main body part, and the first vertical part is connected to the main body part. Three vertical parts are upwardly connected to the stopper, and there is a distance between the first vertical part and the third vertical part, and the stopper is approached from the third vertical part The direction of the main body portion is bent and extended.

Further, the stopper is provided with a reinforcing rib.

Further, the fixing member has two retaining parts, and a vacating slot is formed between the two retaining parts. The groove is locked in the slot.

Further, the minimum width between the two card guards is smaller than the thickness of the electronic card.

Further, each of the card guards has a base, the two bases of the two card guards are disposed opposite to each other, and the two bases respectively extend upward with a bent portion, and the two bent portions The minimum width between the two bases is smaller than the width between the two base portions, and the minimum width between the two bending portions is smaller than the thickness of the electronic card.

Further, the two bending portions respectively have a convex rib.

Further, each of the card protecting portions has a guiding portion extending upward from the bending portion, and the width between the two guiding portions is gradually reduced along the insertion direction of the electronic card.

Further, the fixing member has a first side wall, a second side wall and a third side wall which are connected by bending in sequence, the first side wall and the third side wall are arranged opposite to each other, and the two fourth side walls are arranged opposite to each other. One side of the side wall is respectively connected to the first side wall and the third side wall and the other side is fastened to each other, the first side wall, the second side wall, the third side wall and the The fourth side wall forms an accommodating cavity, the main body is accommodated in the accommodating cavity, and the abdication groove is located above the fourth side wall.

Further, the electronic card has a notch located above the groove, the bending portion corresponds to the notch, and the first clamping portion is disengaged when the electronic card expands and supports the bending portion the second holding part.

At the same time, another technical means is also provided: a locking device for locking an electronic card, the electronic card having at least one groove, including: a locking member, the locking member has a main body and a pulling part, the main body part has a buckle part, the buckle part is used for locking to the groove; a fixing part, the buckle part is pulled by the pulling part When disengaging from the groove, the locking member is fixed to the fixing member and the buckle portion is positioned outside the groove.

Further, the locking member and the fixing member are both metal materials, the locking member has a holding portion extending downward from the main body portion, the holding portion is held on a plastic seat, and the plastic The seat is fixed to the fixing member.

Further, a stopper is located on the side of the main body part away from the buckle part, the stopper has a stopper part abutting against the main body part, and the pulling part is used to pull the When the buckle part is disengaged from the groove, the main body part exerts a force on the blocking part in a direction away from the groove; The main body part generates a restoring force.

Further, the fixing member has two retaining parts, and a vacating slot is formed between the two retaining parts. The groove is locked in the slot, and the minimum width between the two card guards is smaller than the thickness of the electronic card.

Compared with the prior art, the present invention has the following beneficial effects:

Compared with the existing electrical connector assembly, one hand must turn the metal locking device to elastically deform it, while the other hand is used to insert or remove the card, but the process of inserting or removing the card is not easy to operate with one hand. In the locking device of the present invention, the first clamping portion is provided on the locking member, and the first clamping portion is positioned on the fixing member by first pulling the pulling portion with one hand. The second holding part of the device makes the buckle part disengage from the groove. At this time, the hand can leave the pulling part, and the electronic card can be taken out with both hands, which is convenient for operation.

【Description of drawings】

1 is an exploded perspective view of a locking device, an electrical connector assembly and an electronic card in the present invention;

2 is a perspective combined view of the locking device, the electrical connector assembly and the electronic card in the present invention;

3 is a top view of an insulating body in the present invention;

4 is a schematic diagram of the locking member of the locking device in the present invention being positioned on the fixing member;

5 is a schematic diagram of the locking member of the locking device in the present invention being separated from the fixing member;

FIG. 6 is a schematic diagram of the locking device locking the electronic card according to the present invention.

Description of the reference numerals for the specific embodiments:

Insulation body 1 The second vertical portion 342 The second holding portion 64 Central slot 11 The third vertical portion 343 first side wall 65 Terminal slot 12 stopper 4 second side wall 66 Conductive terminal 2 stopper 41 third side wall 67 Contact part 21 Plastic seat 5 fourth side wall 68 Lock 3 Fixture 6 Receiving cavity 69 main body 31 Give way slot 60 Electronic card 7 Buckle part 311 Card guard 61 Electrically conductive part 71 Wrench part 32 Base 611 Groove 72 The first holding part 33 Bending part 62 Notch 73 holding part 34 Rib 621 circuit board 8 The first vertical portion 341 guide 63

【Detailed ways】

In order to facilitate a better understanding of the purpose, structure, features and effects of the present invention, the present invention will now be further described with reference to the accompanying drawings and specific embodiments.

As shown in FIG. 1, the present invention provides a locking device for locking an electronic card 7, the electronic card 7 is electrically connected to an electrical connector, and the electrical connector is fixed to a circuit board 8, including: a locking piece 3 and a fixing piece 6.

As shown in FIG. 1 and FIG. 3 , the electrical connector includes an insulating body 1 mounted on the circuit board 8 , the insulating body 1 extends along the longitudinal direction, and the insulating body 1 is recessed along the longitudinal direction. A central slot 11 for accommodating the electronic card 7 , a plurality of terminal slots 12 are located on one side of the central slot 11 and communicate with the central slot 11 .

As shown in FIG. 3 , a plurality of conductive terminals 2 are respectively accommodated in a plurality of the terminal slots 12 , and each of the conductive terminals 2 has a contact portion 21 exposed in the central slot 11 . For docking with the electronic card 7 .

As shown in FIG. 1 and FIG. 2 , the electronic card 7 has an electrical conductive portion 71 , and the electrical conductive portion 71 has a plurality of gold fingers (not numbered, the same below). The portion 71 enters the central slot 11 and is electrically connected to the contact portion 21 . Both sides of the electronic card 7 respectively have a groove 72 and a notch 73 located above the groove 72 .

As shown in FIG. 1 and FIG. 4 , the locking member 3 includes a main body portion 31 and a pulling portion 32 bent upward from the main body portion 31 . The main body portion 31 faces the groove 72 . A buckle portion 311 is formed by puncturing in the direction. The buckle portion 311 has a guide surface. The buckle portion 311 is used for locking to the groove 72, and the main body portion 31 faces away from the groove. 72 extends two first holding parts 33 , the buckle parts 311 and the first holding parts 33 are respectively located on opposite sides of the main body part 31 , and a holding part 34 extends from the main body part 31 Extending downward, the holding portion 34 has a first vertical portion 341 , a second vertical portion 342 bent and extended from the first vertical portion 341 , bent from the second vertical portion 342 A third vertical portion 343 extends, the first vertical portion 341 and the third vertical portion 343 have a distance and are parallel to each other, and the second vertical portion 342 is respectively connected to the first vertical portion 342 The vertical portion 341 is perpendicular to the third vertical portion 343 .

As shown in FIG. 1 and FIG. 4 , a stopper 4 is located on the side of the main body portion 31 away from the buckle portion 311 , and the stopper 4 has a stopper portion 41 . Abutting the main body portion 31 , in this embodiment, the blocking member 4 is integrally formed by bending and extending from the third vertical portion 343 toward the direction close to the main body portion 31 . 4 has a reinforcing rib (not numbered, the same below) to enhance the strength of the stopper 4 .

As shown in FIG. 1 and FIG. 4 , a plastic seat 5 , the first vertical portion 341 , the second vertical portion 342 and the third vertical portion 343 are respectively fixed on the plastic seat 5 .

As shown in FIG. 1 and FIG. 4 , a fixing member 6 is fixed on the circuit board 8 , and the plastic seat 5 and the fixing member 6 are snap-fastened to each other, and the fixing member 6 has a sequence of A first side wall 65 , a second side wall 66 and a third side wall 67 are bent and connected, the first side wall 65 is opposite to the third side wall 67 , and the two fourth side walls 68 One side is connected to the first side wall 65 and the third side wall 67 respectively, and the other sides of the two fourth side walls 68 are engaged with each other, the first side wall 65, the second side wall 68 The side wall 66 , the third side wall 67 and the two fourth side walls 68 surround a receiving cavity 69 , and the main body 31 and the plastic seat 5 are received in the receiving cavity 69 .

As shown in FIG. 1 and FIG. 4 , the fixing member 6 has two securing parts 61 , and a vacating slot 60 is formed between the two securing parts 61 , and the vacating groove 60 is used for vacating the position of the In the electronic card 7, the card protecting portion 61 and the escape slot 60 are located above the two fourth side walls 68, and the minimum width between the two card protecting portions 61 is smaller than that of the electronic card 7 In this embodiment, each of the card guards 61 has a base 611 , the two bases 611 of the two card guards 61 are arranged opposite each other, and the two bases 611 extend upwards by one The bending part 62, the minimum width between the two bending parts 62 is smaller than the width between the two base parts 611, and the minimum width between the two bending parts 62 is smaller than the electronic card 7 The thickness of the two bending parts 62 respectively has a convex rib 621, the two convex ribs 621 make the minimum width between the two bending parts 62 smaller, and the bending parts 62 correspond to the Each of the card guard portions 61 has a guide portion 63 extending upward from the bent portion 62, and the width between the two guide portions 63 gradually increases along the insertion direction of the electronic card 7. The reduction makes the insertion of the electronic card 7 more accurate.

As shown in FIG. 4 , the fixing member 6 has two second holding parts 64 , and the second holding parts 64 are respectively engaged with the first holding parts 33 . In this embodiment, the The first holding portion 33 is a through hole, and the second holding portion 64 is a convex block. In another embodiment, the first holding portion 33 is a convex block, and the second holding portion 64 is a through hole. , the first holding portion 33 and the second holding portion 64 can also be other structures that can be locked with each other, which is not limited here.

As shown in FIG. 1 and FIG. 4 , in this embodiment, the locking member 3 and the fixing member 6 are both metal materials, and metal materials have the advantages of good strength and durability, so that the locking member 3. The structure of the fixing member 6 is more stable and the service life is prolonged. The first vertical portion 341, the second vertical portion 342 and the third vertical portion 343 of the locking member 3 are respectively held The plastic seat 5 is fixed to the fixing member 6 by the plastic seat 5 .

As shown in FIG. 5 and FIG. 6 , when the electronic card 7 is inserted into the insulating body 1 downward, the pulling part 32 is pulled first to keep the buckle part 311 away from the escaping slot 60 . The first clamping portion 33 positions the second clamping portion 64 , the blocking portion 41 abuts the main body portion 31 , and the main body portion 31 pushes the blocking portion 41 away from the groove 72 . The electronic card 7 is inserted along the guide portion 63 with a force in the direction of The minimum width between the folded parts 62 makes the two folded parts 62 expand outward, the first holding part 33 is separated from the second holding part 64, and the blocking part 41 is opposite to the The main body portion 31 applies a restoring force to the groove 72 , so that the buckle portion 311 enters the escape slot 60 , and the electronic card 7 continues to be inserted along the guide surface until the buckle portion 311 is inserted. Locking to the groove 72, the bent portion 62 is located at the notch 73, the electrical conductive portion 71 enters the central slot 11 and is electrically connected to the contact portion 21; In addition, when the electronic card 7 is inserted into the insulating body 1 downward, the first clamping part 33 may not be pulled to position the second clamping part 64 by pulling the pulling part 32 , but directly The electronic card 7 is inserted into the escaping slot 60 along the guide portion 63. Since the buckle portion 311 has a guide surface, and the locking member 3 is made of metal material with elasticity, the electronic card 7 The card 7 can be directly inserted downward along the guide surface until the buckle portion 311 is locked to the groove 72 .

The process of taking out the electronic card 7 upward is similar to the process of inserting the electronic card 7 downward. Referring to FIG. 5 and FIG. 6 , first pull the pulling part 32 to make the buckle part 311 disengage from the groove 72. The first holding portion 33 locates the second holding portion 64, and the electronic card 7 is taken out upward. When the electronic card 7 located under the notch 73 passes through the bending portion 62, two Each of the bending portions 62 expands outward, the first holding portion 33 is separated from the second holding portion 64 , and the buckle portion 311 enters the letting slot 60 . The groove 72 has moved upward with the electronic card 7 , and the buckle portion 311 will not be locked to the groove 72 to ensure that the electronic card 7 can be taken out smoothly.

To sum up, the locking device of the present invention has the following beneficial effects:

(1) Compared with the existing electrical connector assembly, one hand must turn the metal locking device to elastically deform it, and at the same time, the other hand can insert or remove the card, but the process of inserting or removing the card is not performed with one hand. It is not easy to operate. In the locking device of the present invention, the first locking portion 33 is provided on the locking member 3, and the first locking portion 33 is first pulled by pulling the pulling portion 32 with one hand. The second holding portion 64 positioned on the fixing member 6 makes the buckle portion 311 disengage from the groove 72. At this time, the hand can leave the pulling portion 32, and can be further removed with both hands. The electronic card 7 is described, which is convenient for operation;

(2) The stopper 4 is located on the side of the main body portion 31 away from the buckle portion 311 , and the stopper 4 has the stopper portion 41 abutting against the main body portion 31 . When the first holding portion 33 is separated from the second holding portion 64 , the blocking portion 41 applies a restoring force to the main body portion 31 toward the groove 72 , so that the buckle portion 311 enters the groove 72 . When inserting or taking out the electronic card 7, the first holding part 33 only needs to be positioned on the second holding part 64 once, and the blocking part 41 is used for the recessed groove 60. The restoring force exerted by the slot 72 resets the buckle portion 311, which facilitates the insertion and removal of the electronic card 7;

(3) The minimum width between the two card protecting portions 61 is smaller than the thickness of the electronic card 7 . In this embodiment, each card protecting portion 61 has the base portion 611 , and two card protecting portions The two base portions 611 of the clip portion 61 are disposed opposite to each other, the two base portions 611 respectively extend upward to the bent portion 62 , and the minimum width between the two bent portions 62 is smaller than that between the two base portions 611 . The width between the two bending portions 62 is smaller than the thickness of the electronic card 7. When the electronic card 7 passes through the bending portion 62, the electronic card 7 expands outward. Support two of the bending parts 62, further disengage the first clamping part 33 from the second clamping part 64, and reset the locking member 3 to facilitate the insertion and removal of the electronic card 7;

(4) The fixing member 6 has two card guard parts 61 , and the escape slot 60 is formed between the two guard card parts 61 , and the escape groove 60 is used for leaving the electronic card 7 . When the electronic card 7 enters the escaping slot 60 , the card protecting portion 61 prevents the electronic card 7 from swinging, so that the electronic card 7 is inserted into the central slot 11 more accurately.

The above detailed description is only the description of the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention. Therefore, any equivalent technical changes made by using the contents of the creation description and the drawings are included in the patent of the present invention. within the range.

Claims (36)

1. A locking device for locking an electronic card, the electronic card having at least one groove, characterized in that, comprising: a locking piece, the locking piece has a main body part and a pulling part, the main body part has a buckle part, and a first clamping part is formed extending from the main body part, the buckle part for locking to the groove; a stopper, located on the side of the main body part away from the buckle part, the stopper has a stopper part abutting against the main body part; a fixing piece, the fixing piece has a second holding part; When the latching portion is pulled away from the groove by the pulling portion, the main body portion exerts a force on the blocking portion in a direction away from the groove, and the first clamping portion The blocking portion is positioned on the second holding portion, and when the first holding portion is separated from the second holding portion, the blocking portion generates a restoring force to the main body portion. 2 . The locking device according to claim 1 , wherein the buckle portion and the first holding portion are respectively located on opposite sides of the main body portion. 3 . 3 . The locking device of claim 2 , wherein the buckle portion extends in a direction close to the groove, and the first retaining portion extends in a direction away from the groove. 4 . 4 . The locking device according to claim 3 , wherein there are two first holding portions, and the two first holding portions are respectively connected to the main body portion, and correspondingly, the The fixing piece has two second holding parts, the first holding parts and the second holding parts are respectively buckled, and the first holding parts are perforations, corresponding to the second holding parts The first holding portion is a convex block, or the first holding portion is a convex block, and correspondingly the second holding portion is a perforation. 5 . The locking device of claim 1 , wherein the locking member and the fixing member are both metal materials, and the locking member has a holding portion extending downward from the main body portion, 6 . The holding portion is held on a plastic seat, and is fixed on the fixing piece by the plastic seat. 6 . The locking device of claim 1 , wherein the locking member has a holding portion extending downward from the main body portion, and the blocking member is integrally formed to extend from the holding portion. 7 . 7 . The locking device according to claim 6 , wherein the holding portion has a first vertical portion, a second vertical portion and a third vertical portion that are bent and connected in sequence, and the The first vertical portion is upwardly connected to the main body portion, the third vertical portion is upwardly connected to the stopper, and there is a distance between the first vertical portion and the third vertical portion, so The stopper is bent and extended from the third vertical portion toward the direction close to the main body portion. 8. The locking device of claim 6, wherein the stopper is provided with a reinforcing rib. 9 . The locking device according to claim 1 , wherein the fixing member has two securing parts, and a vacating slot is formed between the two securing parts, and the vacating groove is used to let The electronic card is positioned in place, and the buckle portion locks the groove in the escaping groove. 10 . The locking device according to claim 9 , wherein the minimum width between the two card guards is smaller than the thickness of the electronic card. 11 . 11 . The locking device of claim 9 , wherein each of the guard parts has a base, the two bases of the two guard parts are disposed opposite to each other, and the two bases A bending portion is extended upward respectively, the minimum width between the two bending portions is smaller than the width between the two base portions, and the minimum width between the two bending portions is smaller than the width of the electronic card. thickness. 12 . The locking device of claim 11 , wherein the two bending portions respectively have a protruding rib. 13 . 13. The locking device as claimed in claim 11, wherein each of the guard portions has a guide portion extending upward from the bending portion, and a width between the two guide portions is along the The insertion direction of the electronic card is gradually reduced. 14. The locking device according to claim 9, wherein the fixing member has a first side wall, a second side wall and a third side wall which are connected by bending in sequence, the first side wall The wall and the third side wall are arranged oppositely, one side of the two fourth side walls is respectively connected to the first side wall and the third side wall and the other side is fastened to each other, the first side wall, The second side wall, the third side wall and the fourth side wall are surrounded to form an accommodation cavity, the main body is accommodated in the accommodation cavity, and the abdication groove is located on the fourth side wall above. 15 . The locking device of claim 11 , wherein the electronic card has a notch located above the groove, the bent portion corresponds to the notch, and the electronic card is expanded and supported. 16 . When the bending portion is formed, the first holding portion is separated from the second holding portion. 16. A locking device for locking an electronic card, the electronic card having at least one groove, characterized in that, comprising: a locking piece, the locking piece has a main body part and a pulling part, the main body part has a buckle part, and a first clamping part is formed extending from the main body part, the buckle part for locking to the groove; a fixing piece, the fixing piece has a second retaining part and two retaining parts, each of the retaining parts has a base, the two bases of the two retaining parts are arranged opposite to each other, and the two retaining parts are Each of the bases extends upward with a bending portion, the minimum width between the two bending portions is smaller than the width between the two base portions, and the minimum width between the two bending portions is smaller than the minimum width between the two bending portions. Depending on the thickness of the electronic card, when the buckle portion is pulled away from the groove by the pulling portion, the first clamping portion is positioned at the second clamping portion. 17 . The locking device of claim 16 , wherein the buckle portion and the first holding portion are respectively located on opposite sides of the main body portion. 18 . 18 . The locking device of claim 16 , wherein the buckle portion extends in a direction close to the groove, and the first retaining portion extends in a direction away from the groove. 19 . 19 . The locking device according to claim 16 , wherein there are two first holding parts, and the two first holding parts are respectively connected to the main body part, and correspondingly, the The fixing piece has two second holding parts, the first holding parts and the second holding parts are respectively buckled, and the first holding parts are perforations, corresponding to the second holding parts The first holding part is a convex block, or the first holding part is a convex block, and the second holding part is a perforation correspondingly. 20. The locking device of claim 16, wherein the locking member and the fixing member are both metal materials, and the locking member has a holding portion extending downward from the main body portion, The holding portion is held on a plastic seat, and is fixed on the fixing piece by the plastic seat. 21 . The locking device of claim 16 , wherein a vacant slot is formed between the two card protecting portions, and the vacant slot is used to vacate the electronic card, and the buckle card 21 . The part is locked in the recessed groove. 22. The locking device according to claim 16, wherein the minimum width between the two card guard parts is smaller than the thickness of the electronic card. 23. The locking device as claimed in claim 16, wherein the two bending portions respectively have a protruding rib. 24. The locking device of claim 16, wherein each of the guard parts has a guide part extending upward from the bending part, and the width between the two guide parts is along the The insertion direction of the electronic card is gradually reduced. 25. The locking device of claim 21, wherein the fixing member has a first side wall, a second side wall and a third side wall which are connected by bending in sequence, the first side wall The wall and the third side wall are arranged oppositely, one side of the two fourth side walls is respectively connected to the first side wall and the third side wall and the other side is fastened to each other, the first side wall, The second side wall, the third side wall and the fourth side wall are surrounded to form an accommodation cavity, the main body is accommodated in the accommodation cavity, and the abdication groove is located on the fourth side wall above. 26 . The locking device of claim 16 , wherein the electronic card has a notch located above the groove, the bent portion corresponds to the notch, and the electronic card is expanded and supported. 27 . When the bending portion is formed, the first holding portion is separated from the second holding portion. 27. A locking device for locking an electronic card, the electronic card having at least one groove, characterized in that it comprises: a locking piece, the locking piece has a main body part and a pulling part, the main body part has a buckle part, and a first clamping part is formed extending from the main body part, the buckle part for locking to the groove; a fixing piece, the fixing piece has a second holding part, a vacant slot and a first side wall, a second side wall and a third side wall which are connected by bending in sequence, the first side wall Opposite to the third sidewall, one side of the two fourth sidewalls is respectively connected to the first sidewall and the third sidewall and the other side is fastened to each other. The second side wall, the third side wall and the fourth side wall are surrounded to form an accommodation cavity, the main body is accommodated in the accommodation cavity, and the abdication groove is located on the side of the fourth side wall. Above, when the latching portion is pulled away from the groove by the pulling portion, the first clamping portion is positioned at the second clamping portion. 28 . The locking device of claim 27 , wherein the buckle portion and the first holding portion are respectively located on opposite sides of the main body portion. 29 . 29. The locking device of claim 27, wherein the buckle portion extends in a direction close to the groove, and the first retaining portion extends in a direction away from the groove. 30. The locking device of claim 27, wherein there are two first holding parts, and the two first holding parts are respectively connected to the main body, and correspondingly, the The fixing piece has two second holding parts, the first holding parts and the second holding parts are respectively buckled, and the first holding parts are perforations, corresponding to the second holding parts The first holding portion is a convex block, or the first holding portion is a convex block, and correspondingly the second holding portion is a perforation. 31. The locking device according to claim 27, wherein the locking member and the fixing member are both metal materials, and the locking member has a holding portion extending downward from the main body portion, The holding portion is held on a plastic seat, and is fixed on the fixing piece by the plastic seat. 32 . The locking device according to claim 27 , wherein the fixing member has two retaining parts, and the escape groove is formed between the two retaining parts, and the escape groove is used for 32 . The electronic card is vacated, and the locking portion locks the groove in the vacating groove. 33. The locking device according to claim 32, wherein the minimum width between the two card guard parts is smaller than the thickness of the electronic card. 34. A locking device for locking an electronic card, the electronic card having at least one groove, characterized in that comprising: a locking piece, the locking piece has a main body part and a pulling part, the main body part has a buckle part, the buckle part is used for locking to the groove; a stopper, located on the side of the main body part away from the buckle part, the stopper has a stopper part abutting against the main body part; a fixing part, when the latching part is pulled out of the groove by the pulling part, the locking part is fixed on the fixing part and the latching part is positioned outside the groove, The main body part exerts a force on the blocking part in a direction away from the groove, and when the locking part is disengaged from the fixing part, the blocking part generates a restoring force on the main body part. 35. The locking device according to claim 34, wherein the locking member and the fixing member are both metal materials, and the locking member has a holding portion extending downward from the main body portion, The holding portion is held on a plastic seat, and is fixed on the fixing piece by the plastic seat. 36 . The locking device of claim 34 , wherein the fixing member has two retaining parts, and a vacating slot is formed between the two retaining parts, and the evacuating slot is used to let The electronic card is positioned, the buckle portion locks the groove in the escaping slot, and the minimum width between the two guarding portions is smaller than the thickness of the electronic card.

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