CN215527531U

CN215527531U - Push-button

Info

Publication number: CN215527531U
Application number: CN202121653252.6U
Authority: CN
Inventors: 蔡苗; 何恒健; 宋蕾; 梁永湖; 杨道国
Original assignee: Guilin Xuyan Electromechanical Technology Co ltd; Guilin University of Electronic Technology
Current assignee: Guilin Yanchuang Semiconductor Technology Co ltd
Priority date: 2021-07-20
Filing date: 2021-07-20
Publication date: 2022-01-14
Anticipated expiration: 2031-07-20

Abstract

The utility model provides a key, which comprises a base and a welding leg, wherein the base is provided with a plurality of welding legs; the welding leg includes weld part and joint portion, and joint portion inserts and locates in the base, and the joint is connected on the base, and the weld part is connected with the one end of joint portion. The key provided by the utility model comprises the base and the welding leg, wherein the welding leg is provided with the clamping part and is clamped on the base through the clamping part, so that the welding leg is installed and fixed, and the structure of the welding leg is simplified. Compared with two types of welding leg structures introduced by the related technology, the welding leg provided by the utility model can be installed by machining after the injection molding of the base is finished. Because the welding leg can be installed after the base is injection-molded, and the welding leg does not need to be adhered by chemical agents, the welding surface of the welding leg does not need to be protected when the key is processed, the welding surface of the welding leg is ensured to have no residue, the manufacturing process of the key is simplified, the rejection rate of the key can be reduced, and the manufacturing cost of the welding leg is further reduced.

Description

Push-button

Technical Field

The utility model relates to the field of keys, in particular to a key.

Background

Currently, in the related art, the solder leg mounting structure of the key mainly includes the following two types:

firstly, a welding leg of the key is connected with a welding leg support, the welding leg support is embedded in the base, and the welding leg and the base are formed in one step when the key is injection-molded or vulcanized.

And secondly, the welding leg is adhered to the base through chemical materials such as adhesive and the like, so that the welding leg is installed.

However, the two types of solder fillets have complex mounting structures, and the welding surface of the solder fillet needs to be protected when the key is processed, so that the influence of silica gel and adhesive on the welding surface on the welding performance of the solder fillet is prevented, and the key is complex in manufacturing process and high in manufacturing cost.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to solving at least one of the problems of the prior art or the related art.

To this end, a first aspect of the utility model proposes a key.

In view of the above, the present invention provides a key, which includes a base and a solder leg; the welding leg includes weld part and joint portion, and joint portion inserts and locates in the base, and the joint is connected on the base, and the weld part is connected with the one end of joint portion.

The key provided by the utility model comprises the base and the welding leg, wherein the welding leg is provided with the clamping part and is clamped on the base through the clamping part, so that the welding leg is installed and fixed, and the structure of the welding leg is simplified.

Compared with two types of welding leg structures introduced by the related technology, the welding leg provided by the utility model can be installed by machining after the injection molding of the base is finished. Because the welding leg can be installed after the base is injection-molded, and the welding leg does not need to be adhered by chemical agents, the welding surface of the welding leg does not need to be protected when the key is processed, the welding surface of the welding leg is ensured to have no residue, the manufacturing process of the key is simplified, the rejection rate of the key can be reduced, and the manufacturing cost of the welding leg is further reduced.

The welding leg is installed through machining, the position, the number, the shape, the size and the like of the welding leg are not affected by the key forming process, the installation position of the welding leg is more flexible, the welding leg is suitable for manufacturing keys of various models, and the universality of the welding leg is improved.

Compared with the key with the welding leg arranged on the base through the bending process, the key provided by the utility model has the advantages that the welding leg can be arranged by inserting the clamping part into the base, the welding leg is not required to be bent when the welding leg is arranged, the deformation of a welding part caused by external force when the welding leg is bent or the displacement of welding caused by external force can be prevented, the surface of the welding leg is smoother, the position of the welding leg is more accurate, the qualification rate of the key is further improved, and the manufacturing cost of the key is further reduced.

Because the welding leg does not need to be bent again when the welding leg is installed, the installation process of the welding leg is simplified, the installation efficiency of the welding leg is further improved, and the production speed of the key is increased.

Compared with the key with the welding leg arranged on the base through the bending process, the key provided by the utility model has the advantages that the welding leg is clamped on the base through the clamping part, the bending part for fixing the welding leg is not required to be arranged outside the upper surface of the base, the welding leg exposed outside is avoided when the key is used, and the appearance of the key is neat and attractive.

In addition, the key in the above technical solution provided by the present invention may further have the following additional technical features:

in one technical scheme of the utility model, the base comprises a base body and a mounting hole, the mounting hole is formed in the base body, and the clamping part is inserted into the mounting hole.

In this technical scheme, be provided with the mounting hole on the base body, joint portion inserts and locates in the mounting hole for during the installation leg, the resistance that joint portion received is littleer, and then makes the installation of leg more convenient, and can avoid joint portion and welding part to lead to taking place the variant because of the too big external force that receives when the installation, further promotes the roughness of welding part.

The mounting hole can be a through hole or a blind hole.

In one technical scheme of the utility model, the base further comprises a boss which is arranged on the inner wall of the mounting hole and protrudes out of the inner wall of the mounting hole.

In this technical scheme, be provided with the boss on the inner wall of mounting hole, under the condition that joint portion inserted the mounting hole, the boss can play the effect of fixed joint portion, and then makes joint portion can set up in the mounting hole more steadily, has promoted the structural strength of leg, reduces the probability that the leg drops on by the base.

Two bosses are arranged in each mounting hole and are symmetrically arranged relative to the clamping parts.

In one technical scheme of the utility model, the base further comprises a connecting part, and at least two sides of the connecting part are connected with the lug bosses.

In this technical scheme, connecting portion are connected with the boss, promote the intensity of boss, when the cartridge leg, reduce the probability that the boss drops under the impact of leg. And when the plug-in mounting leg, joint portion penetrable connecting portion, and then insert and locate the mounting hole.

In one technical scheme of the utility model, the welding leg further comprises a clamping interface, and the clamping interface is arranged on the clamping part and faces to the inner wall of the mounting hole; the boss inlays in the joint mouth.

In this technical scheme, be provided with the joint interface towards mounting hole inner wall open-ended in the joint portion, and the joint interface can the joint on the boss for joint portion more inserts more stably and locates in the mounting hole.

In one technical scheme of the utility model, the welding leg further comprises a guide part, and one end of the guide part is connected with the other end of the clamping part; wherein, the width of guide part is reduced to the other end by the one end that guide part and joint portion are connected.

In this technical scheme, the leg still includes the guide part, and the width of guide part is reduced to the other end by the one end that guide part and joint portion are connected for the resistance that the leg received when the installation is littleer, and more easily pierces through connecting portion, further promotes the installation effectiveness of leg.

Because the resistance that joint portion received is littleer, can further can avoid joint portion and welding part to lead to taking place the deformation because of the too big external force that receives when the installation, promote the roughness of welding part.

In one technical scheme of the utility model, the number of the clamping parts is two, and the two clamping parts are respectively connected with two ends of the welding part.

In this technical scheme, two joint portions are connected with the both ends of weld part respectively, and on inserting and locating the base for the both ends of weld part all can be fixed in on the base under the effect of joint portion, and then make the atress of leg more even.

In one technical scheme of the utility model, the number of the clamping parts is one, and one clamping part is connected with the middle part of the welding part.

In this technical scheme, the quantity of joint portion is one to be connected with the middle part of welding part, further simplified the structure of leg, and the resistance that receives when reducing the leg installation, and then reduce the possibility that the leg takes place to warp when the installation.

In one aspect of the utility model, the weld is disposed along a bottom wall of the base.

In this technical scheme, the welding part sets up along the diapire of base, further promotes the planarization of welding part.

In one aspect of the present invention, the welded portion is a metal welded portion having weldability.

In this technical scheme, through setting up the welding part into the metal welding part that possesses the weldability for welding part itself possesses the weldability, has promoted the coplanarity of leg face of weld, and then has promoted product quality.

In one embodiment of the present invention, the fillet further includes a welding layer, and the welding layer covers the outer side of the welding portion.

In the technical scheme, the welding layer is arranged, so that the materials of the welding part are more widely selected, and the material cost of the welding leg is effectively reduced.

In one technical scheme of the utility model, the welding part and the clamping part are of an integrated structure.

In this technical scheme, through setting up welding part and joint portion into the integral type structure, simplified the manufacturing process of leg to promote the intensity of leg, ensure the reliability of leg.

In one embodiment of the present invention, the number of the solder fillets is at least one.

In the technical scheme, the number of the welding feet is set to be at least one, so that the stability of the key is ensured, and the normal work of the key is ensured.

In one technical scheme of the utility model, the welding feet are symmetrically arranged based on the condition that the number of the welding feet is multiple.

In the technical scheme, when the key comprises a plurality of welding feet, the plurality of welding feet are symmetrically arranged, so that the key is ensured to be stressed uniformly, and the service life of the key is prolonged.

In one technical scheme of the utility model, the key further comprises a supporting part, a pressing part and a conductive contact; the supporting part is connected with the base; the pressing part is connected with the supporting part and is positioned above the supporting part; the conductive contact is connected with the lower surface of the pressing part.

The number of conductive contacts is at least one.

In one technical scheme of the utility model, the number of the bosses is multiple, and the bosses are arranged along the thickness direction of the base; the number of the clamping interfaces is the same as that of the bosses and is arranged corresponding to the bosses.

In this technical scheme, the quantity of boss is a plurality of, and arranges along the thickness direction of base, and the quantity of joint interface is the same with the quantity of boss, corresponds the setting with the boss, has promoted the joint strength of leg with the base effectively, and then makes the stability of leg.

The number of the bosses and the number of the clamping interfaces can be one.

In one technical scheme of the utility model, the clamping part is columnar or flaky; the welding part is circular or rectangular.

In the technical scheme, the clamping part is columnar or flaky; the welding part is circular or rectangular.

In the technical scheme, the clamping part is columnar or flaky; the welding part is circular or rectangle for the leg has different forms, in order to satisfy the different demands to the leg, and then promotes the commonality of button.

Specifically, the clamping portion is columnar, and the welding portion is circular.

The clamping part is sheet-shaped, and the welding part is rectangular.

Optionally, the two sides or the circumferential direction of the clamping portion are provided with clamping interfaces.

Optionally, a clamping interface is locally arranged on one side or the circumferential direction of the clamping portion.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 shows a schematic structural diagram of a key according to one embodiment of the present invention;

FIG. 2 illustrates one of the partial cross-sectional views of the base and solder fillets according to one embodiment of the utility model;

FIG. 3 illustrates a second partial cross-sectional view of the submount and solder fillet in accordance with one embodiment of the utility model;

FIG. 4 illustrates a partial cross-sectional view of a base according to one embodiment of the present invention;

FIG. 5 illustrates a front view of a solder tail in accordance with one embodiment of the present invention;

FIG. 6 illustrates a side view of a solder tail in accordance with one embodiment of the present invention;

FIG. 7 illustrates a top view of a solder tail in accordance with one embodiment of the present invention;

FIG. 8 illustrates one of the cross-sectional views of a key according to one embodiment of the present invention;

FIG. 9 illustrates a second cross-sectional view of a key according to one embodiment of the utility model;

FIG. 10 illustrates a front view of a solder tail in accordance with another embodiment of the present invention;

FIG. 11 illustrates a side view of a solder tail in accordance with another embodiment of the present invention;

FIG. 12 illustrates a partial cross-sectional view of a submount and solder fillet in accordance with another embodiment of the present invention;

FIG. 13 shows a partial cross-sectional view of a base according to another embodiment of the utility model;

FIG. 14 shows a side view of a solder tail in accordance with another embodiment of the present invention;

FIG. 15 shows a front view of a solder tail in accordance with yet another embodiment of the present invention;

FIG. 16 illustrates a top view of a solder tail in accordance with yet another embodiment of the present invention;

fig. 17 shows a side view of a solder tail in accordance with yet another embodiment of the present invention.

Wherein, the correspondence between the reference numbers and the part names in fig. 1 to 17 is:

100 base, 110 base body, 120 mounting hole, 130 boss, 140 connecting portion, 200 leg, 210 welding part, 220 joint portion, 230 joint interface, 240 guide part, 300 supporting part, 400 pressing part, 500 conductive contact.

Detailed Description

In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the utility model will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.

Keys according to some embodiments of the present invention are described below with reference to fig. 1-17.

The first embodiment is as follows:

as shown in fig. 1 and 2, the present invention provides a key, including a base 100 and a solder leg 200; the welding leg 200 includes a welding portion 210 and a clamping portion 220, the clamping portion 220 is inserted into the base 100 and clamped on the base 100, and the welding portion 210 is connected to one end of the clamping portion 220.

The key provided by the utility model comprises a base 100 and a welding leg 200, wherein the welding leg 200 is provided with a clamping part 220 and is clamped on the base 100 through the clamping part 220, so that the welding leg 200 is installed and fixed, and the structure of the welding leg 200 is simplified.

Compared with two types of welding foot 200 structures introduced in the related art, the welding foot 200 provided by the utility model can be installed by machining after the base 100 is subjected to injection molding. Because the welding leg 200 can be installed after the base 100 is injection-molded, and the welding leg 200 does not need to be adhered by chemical agents, the welding surface of the welding leg 200 does not need to be protected when the key is processed, the welding surface of the welding leg 200 does not have residue, the manufacturing process of the key is simplified, the rejection rate of the key can be reduced, and the manufacturing cost of the welding leg 200 is further reduced.

Install leg 200 through machining, the position, quantity, shape, size etc. of leg 200 do not receive the influence of button forming process, still make the mounted position of leg 200 more nimble, are fit for the preparation of the button of multiple model, have promoted leg 200's commonality.

Compared with the key provided by the utility model, the key is provided with the welding leg 200 arranged on the base 100 through a bending process, the welding leg 200 can be arranged by inserting the clamping part 220 into the base 100, the welding leg 200 is not required to be bent when the welding leg 200 is arranged, the deformation of the welding part 210 caused by external force when the welding leg 200 is bent or the displacement of welding caused by external force can be prevented, the surface of the welding leg 200 is smoother, the position of the welding leg 200 is more accurate, the qualification rate of the key is further improved, and the manufacturing cost of the key is further reduced.

Because the welding leg 200 does not need to be bent again when the welding leg 200 is installed, the installation process of the welding leg 200 is simplified, the installation efficiency of the welding leg 200 is further improved, and the production speed of the key is increased.

Moreover, compared with the key in which the solder leg 200 is mounted on the base 100 through a bending process, the key provided by the utility model has the advantages that the solder leg 200 is clamped on the base 100 through the clamping portion 220, and the bending portion for fixing the solder leg 200 is not required to be arranged outside the upper surface of the base 100, so that the solder leg 200 is not exposed outside when the key is used, and the appearance of the key is neat and beautiful.

Example two:

the present embodiment provides a key, and in addition to the technical features of the above embodiments, the present embodiment further includes the following technical features.

As shown in fig. 3 and 4, the base 100 includes a base body 110 and a mounting hole 120, the mounting hole 120 is disposed on the base body 110, and the clamping portion 220 is inserted into the mounting hole 120.

In this embodiment, be provided with mounting hole 120 on base body 110, joint portion 220 is inserted and is located in mounting hole 120 for when installation leg 200, the resistance that joint portion 220 received is littleer, and then makes the installation of leg 200 more convenient, and can avoid joint portion 220 and welding part 210 because of the too big deformation that leads to taking place of external force that receives when the installation, further promote the roughness of welding part 210.

The mounting hole 120 may be a through hole or a blind hole.

Example three:

As shown in fig. 3 and 4, the base 100 further includes a boss 130, and the boss 130 is disposed on the inner wall of the mounting hole 120 and protrudes from the inner wall of the mounting hole 120.

In this embodiment, be provided with boss 130 on the inner wall of mounting hole 120, under the condition that joint portion 220 inserted mounting hole 120, boss 130 can play the effect of fixed joint portion 220, and then makes joint portion 220 set up in mounting hole 120 more steadily, has promoted leg 200's structural strength, reduces the probability that leg 200 drops on by base 100.

Two bosses 130 are arranged in each mounting hole 120, and the two bosses 130 are symmetrically arranged relative to the clamping portion 220.

Example four:

As shown in fig. 3 and 4, the base 100 further includes a connection part 140, and at least both sides of the connection part 140 are connected to the bosses 130.

In this embodiment, the connecting portion 140 is connected to the boss 130, so as to improve the strength of the boss 130 and reduce the probability that the boss 130 falls off under the impact of the solder fillet 200 when the solder fillet 200 is inserted. When the solder leg 200 is inserted, the engaging portion 220 can penetrate through the connecting portion 140 and then be inserted into the mounting hole 120.

Example five:

As shown in fig. 5 and 6, the fillet weld 200 further includes a clip interface 230, the clip interface 230 is disposed on the clip portion 220 and faces the inner wall of the mounting hole 120; the boss 130 is embedded in the card interface 230.

In this embodiment, the clamping portion 220 is provided with a clamping interface 230 opening towards the inner wall of the mounting hole 120, and the clamping interface 230 can be clamped on the boss 130, so that the clamping portion 220 is more stably inserted into the mounting hole 120.

Example six:

As shown in fig. 6 and 7, the solder tail 200 further includes a guide portion 240, and one end of the guide portion 240 is connected to the other end of the clamping portion 220; wherein, the width of the guiding portion 240 is reduced from one end of the guiding portion 240 connected with the clamping portion 220 to the other end.

In this embodiment, the fillet 200 further includes a guide portion 240, and the width of the guide portion 240 is reduced from one end of the guide portion 240 connected with the snap-in portion 220 to the other end, so that the resistance received by the fillet 200 when mounting is smaller, and the connecting portion 140 is easier to penetrate, further improving the mounting efficiency of the fillet 200.

Because the resistance that joint portion 220 received is littleer, can further can avoid joint portion 220 and welding part 210 to lead to taking place the deformation because of the too big external force that receives when the installation, promote the roughness of welding part 210.

Example seven:

As shown in fig. 5 and 7, the number of the clamping portions 220 is two, and the two clamping portions 220 are respectively connected to both ends of the welding portion 210.

In this embodiment, the two clamping portions 220 are respectively connected to two ends of the welding portion 210 and inserted into the base 100, so that two ends of the welding portion 210 can be fixed on the base 100 under the action of the clamping portions 220, and the stress on the solder legs 200 is more uniform.

Example eight:

As shown in fig. 8 and 9, the welding part 210 is provided along the bottom wall of the chassis 100.

In this embodiment, the welding portion 210 is disposed along the bottom wall of the base 100, so as to further improve the flatness of the welding portion 210.

Example nine:

The welded portion 210 is a metal welded portion 210 having weldability.

In this embodiment, the welding portion 210 is set to be a metal welding portion 210 with weldability, so that the welding portion 210 itself has weldability, and the coplanarity of the welding surfaces of the fillets 200 is improved, thereby improving the product quality.

Example ten:

Fillet 200 also includes a weld layer that wraps around the outside of weld 210.

In this embodiment, by providing the welding layer, the material of the welding portion 210 is more widely selected, and the material cost of the fillet 200 is effectively reduced.

Example eleven:

As shown in fig. 5 and 7, the welding portion 210 and the clamping portion 220 are of an integral structure.

In this embodiment, the manufacturing process of the solder tail 200 is simplified by providing the soldering portion 210 and the engaging portion 220 as an integral structure, and the strength of the solder tail 200 is improved, thereby ensuring the reliability of the solder tail 200.

Example twelve:

The number of fillets 200 is at least one.

In this embodiment, the number of the solder legs 200 is set to at least one, so that the stability of the key is ensured and the normal operation of the key is ensured.

Example thirteen:

As shown in fig. 9, in the case where the number of the fillets 200 is plural, the fillets 200 are symmetrically arranged.

In this embodiment, when the key includes a plurality of solder legs 200, the plurality of solder legs 200 are symmetrically disposed, so as to ensure uniform stress on the key and prolong the service life of the key.

Example fourteen:

As shown in fig. 8 and 9, the key further includes a supporting portion 300, a pressing portion 400, and a conductive contact 500; the supporting part 300 is connected with the base 100; the pressing part 400 is connected with the supporting part 300 and is positioned above the supporting part 300; the conductive contact 500 is connected to the lower surface of the pressing part 400.

The number of the conductive contacts 500 is at least one.

Example fifteen:

As shown in fig. 10, 11 and 12, the number of the catching portions 220 is one, and one catching portion 220 is connected to the middle portion of the welding portion 210.

In this technical scheme, the number of joint portion 220 is one to be connected with the middle part of welding portion 210, further simplified the structure of leg 200, and the resistance that receives when reducing leg 200 and installing, and then reduce the possibility that leg 200 takes place to warp when the installation.

Example sixteen:

As shown in fig. 13 and 14, the number of the bosses 130 is plural, and the plural bosses 130 are arranged in the thickness direction of the chassis 100; the number of the card interfaces 230 is the same as the number of the bosses 130, and is provided corresponding to the bosses 130.

In this embodiment, the number of the bosses 130 is plural, and the bosses are arranged along the thickness direction of the base 100, the number of the card interfaces 230 is the same as the number of the bosses 130, and the number of the card interfaces is set corresponding to the bosses 130, so that the connection strength between the solder leg 200 and the base 100 is effectively improved, and the stability of the solder leg 200 is further improved.

The number of bosses 130 and card interfaces 230 may also be one.

Example seventeen:

The clamping portion 220 is columnar or sheet-shaped; the welding part 210 has a circular or rectangular shape.

In this embodiment, the clamping portion 220 is in a column shape or a sheet shape; the welding part 210 has a circular or rectangular shape.

In this embodiment, the clamping portion 220 is in a column shape or a sheet shape; the welding portion 210 is circular or rectangular, so that the solder leg 200 has different forms to meet different requirements for the solder leg 200, thereby improving the universality of the key.

Specifically, as shown in fig. 15 and 16, the catching portion 220 has a cylindrical shape, and the welding portion 210 has a circular shape.

As shown in fig. 5 and 6, the catching portion 220 has a sheet shape, and the welding portion 210 has a rectangular shape.

Alternatively, as shown in fig. 6, the clamping portion 220 is provided with clamping interfaces 230 on both sides or in the circumferential direction.

Alternatively, as shown in fig. 17, a clip interface 230 is partially provided on one side or in the circumferential direction of the clip portion 220.

In the claims, the specification and the drawings of the specification of the present invention, the term "plurality" means two or more, unless explicitly defined otherwise, the terms "upper", "lower", and the like indicate orientations or positional relationships based on those shown in the drawings only for the purpose of describing the present invention more conveniently and simplifying the description, and do not indicate or imply that the referred device or element must have the described specific orientation, be constructed and operated in the specific orientation, and thus the description should not be construed as limiting the present invention; the terms "connect," "mount," "secure," and the like are to be construed broadly, and for example, "connect" may refer to a fixed connection between multiple objects, a removable connection between multiple objects, or an integral connection; the multiple objects may be directly connected to each other or indirectly connected to each other through an intermediate. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art from the above data specifically.

In the claims, specification, and drawings that follow the present disclosure, the description of the terms "one embodiment," "some embodiments," "specific embodiments," and so forth, means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In the claims, specification and drawings of the present invention, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A key, comprising:

a base;

the welding leg, the welding leg includes weld part and joint portion, joint portion insert locate in the base, and the joint locate on the base, the weld part with the one end of joint portion is connected.

2. The key of claim 1, wherein the base comprises:

a base body;

the mounting hole is formed in the base body, and the clamping portion is inserted into the mounting hole.

3. The key of claim 2, wherein the base further comprises:

the boss is arranged on the inner wall of the mounting hole and protrudes out of the inner wall of the mounting hole.

4. The key of claim 3, wherein the base further comprises:

the connecting part, at least both sides of connecting part with the boss is connected.

5. The key of claim 3, wherein the solder tail further comprises:

the clamping interface is arranged on the clamping part and faces to the inner wall of the mounting hole;

the boss is embedded in the clamping port.

6. The key of claim 5,

the number of the bosses is multiple, and the bosses are arranged along the thickness direction of the base;

the number of the clamping interfaces is the same as that of the bosses, and the clamping interfaces and the bosses are arranged correspondingly.

7. The key of claim 1, wherein the solder tail further comprises:

one end of the guide part is connected with the other end of the clamping part;

the width of the guide part is reduced from one end of the guide part connected with the clamping part to the other end of the guide part connected with the clamping part.

8. The key of claim 1,

the quantity of joint portion is two, two joint portion respectively with the both ends of welding part are connected.

9. The key of claim 1,

the quantity of joint portion is one, one joint portion with the middle part of welding part is connected.

10. The key of any one of claims 1-9,

the clamping part is columnar or flaky;

the welding part is circular or rectangular.