CN219800705U

CN219800705U - Key-press

Info

Publication number: CN219800705U
Application number: CN202321022853.6U
Authority: CN
Inventors: 蔡苗; 郑建娜; 杨道国
Original assignee: Guilin Yanchuang Semiconductor Technology Co ltd; Guilin Xuyan Electromechanical Technology Co ltd
Current assignee: Guilin Yanchuang Semiconductor Technology Co ltd; Guilin Xuyan Electromechanical Technology Co ltd
Priority date: 2023-04-28
Filing date: 2023-04-28
Publication date: 2023-10-03
Anticipated expiration: 2033-04-28

Abstract

The utility model provides a key, comprising: a base having a first side and a second side disposed opposite each other; the welding leg penetrates through the base and comprises a first body and a second body which are connected; at least one first groove, wherein the first groove is arranged on the first side, and at least part of the first body and/or at least part of the second body are arranged in the first groove; and/or at least one second groove, wherein the second groove is arranged on the second side, and at least part of the second body and/or at least part of the first body are arranged in the second groove. By providing grooves (first grooves and/or second grooves), the first aspect can serve as a positioning or limiting function for the solder feet; in the second aspect, the welding leg is in closer contact with the base after press fitting, and the press fitting effect is better; in the third aspect, the solder pins can be hidden to a certain extent, only the parts which need to be soldered with the circuit board can be exposed, interference with other components is not easy to occur, and the circuit board is more attractive.

Description

Key-press

Technical Field

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

Background

In the related art, the welding leg similar to the shape of a book needs to be pressed, the welding leg is not tightly contacted with the base after the pressing, the pressing effect is not ideal, and the welding leg is easy to interfere with other parts.

Disclosure of Invention

In order to solve or improve at least one of the above problems, an object of the present utility model is to provide a key.

In order to achieve the above object, the present utility model provides a key comprising: a base having a first side and a second side disposed opposite each other; the welding leg penetrates through the base and comprises a first body and a second body which are connected; at least one first groove, wherein the first groove is arranged on the first side, and at least part of the first body and/or at least part of the second body are arranged in the first groove; and/or at least one second groove, wherein the second groove is arranged on the second side, and at least part of the second body and/or at least part of the first body are arranged in the second groove.

According to the technical scheme of the key, the first aspect can play a role in positioning or limiting the welding pin by arranging the grooves (the first groove and/or the second groove); in the second aspect, the welding leg is in closer contact with the base after press fitting, and the press fitting effect is better; in the third aspect, the solder pins can be hidden to a certain extent, only the parts which need to be soldered with the circuit board can be exposed, interference with other components is not easy to occur, and the circuit board is more attractive.

Specifically, the key comprises a base, a welding leg, at least one first groove and/or at least one second groove. Wherein, the base mainly plays the effect of installation carrier. Optionally, the base is a silica gel structure. Optionally, the key further comprises a supporting part, a pressing part and a conductive contact. One end of the supporting part is connected with the base, and the other end of the supporting part is connected with the pressing part. The conductive contact is arranged at one end of the pressing part facing the base, and the conductive contact can move relative to the base. Optionally, the supporting part and the base are relatively fixed in an adhesive mode, so that the connection mode is simple and convenient to operate; or, the supporting part and the base are of an integrated structure, and compared with a post-processing mode, the structure is good in mechanical property and high in connection strength, is favorable for reducing the number of parts and improves the assembly efficiency. Optionally, the pressing part and the supporting part are relatively fixed in an adhesive mode, so that the connection mode is simple and the operation is convenient.

Alternatively, the cross section of the base is square, rectangular or circular. Of course, the cross section of the base may also be any other shape, such as triangular, pentagonal, hexagonal, etc. The key of the present utility model can be applied to various fields such as a piano, a keyboard, etc., by setting the cross section of the base to different shapes. Alternatively, when the cross section of the base is square, rectangular or other polygonal, the corner positions of the base are provided with chamfers or fillets. Through setting up chamfer or fillet, can reduce the occupation of button to the space, can also make the button more pleasing to the eye.

Further, the welding leg penetrates through the base. The fillets include a first body and a second body connected. Optionally, the number of the second bodies is at least two, that is, the number of the second bodies can be two or more, and the second bodies are flexibly set according to actual requirements. Optionally, the fillets further comprise a connection. One end of the connecting part is connected with the first body, and the other end of the connecting part is connected with the second body. The first body is connected with the second body through the connecting part. Optionally, the number of the connecting parts is at least two, that is, the number of the connecting parts can be two or more, and the second body can be flexibly set according to actual requirements. Each second body is connected with the first body through a corresponding connecting part. Alternatively, the fillets are staple-shaped or approximate staple-shaped. In other words, the first body, the connecting portion and the second body constitute or approximate a staple structure. One of the first body and the second body is arranged on the first side of the base, and the other of the first body and the second body is arranged on the second side of the base. When the welding leg is arranged on the base in a penetrating manner, the first body is arranged on the first side of the base, and the second body is arranged on the second side of the base; when the welding leg is penetrated in the base in a reverse installation mode, the first body is arranged on the second side of the base, and the second body is arranged on the first side of the base.

Further, the first groove is arranged on the first side of the base. The number of the first grooves is at least one, namely, one, two or more first grooves can be formed, and the first grooves are flexibly arranged according to actual requirements in consideration of the limit effect of the butt welding pins, the press mounting effect, the structural strength of the base and other factors. At least part of the first body and/or at least part of the second body are/is arranged in the first groove. When the welding leg is arranged on the base in a penetrating mode, the first body is arranged on the first side of the base, the second body is arranged on the second side of the base, and at least part of the first body is arranged in the first groove. In the first body, at least part of the first body is arranged in the first groove. Optionally, the dimension of the first body in the first direction is not smaller than the dimension of the first groove in the first direction. The first body can be flush with the opening of the first groove, or the first body can extend out of the first groove, so that the key is conveniently welded with the circuit board through the first body of the welding leg; when the welding leg is penetrated in the base in a reverse installation mode, the first body is arranged on the second side of the base, the second body is arranged on the first side of the base, and at least part of the second body is arranged in the first groove. In the second body, at least part of the second body is arranged in the first groove. Optionally, the dimension of the second body in the first direction is not smaller than the dimension of the first groove in the first direction. The second body can be flush with the opening of the first groove, or the second body can extend out of the first groove, so that the key is conveniently welded with the circuit board through the second body of the welding leg.

Further, the second groove is arranged on the second side of the base. The number of the second grooves is at least one, namely, one, two or more second grooves can be formed, and the second grooves are flexibly arranged according to actual requirements in consideration of the limit effect of the butt welding pins, the press mounting effect, the structural strength of the base and other factors. At least part of the second body and/or at least part of the first body is/are arranged in the second groove. When the welding leg is arranged on the base in a penetrating mode, the first body is arranged on the first side of the base, the second body is arranged on the second side of the base, and at least part of the second body is arranged in the second groove. In the second body, at least part of the second body is arranged in the second groove. Optionally, the dimension of the second body in the first direction is smaller than or equal to or greater than the dimension of the second groove in the first direction; when the welding leg is penetrated in the base in a reverse installation mode, the first body is arranged on the second side of the base, the second body is arranged on the first side of the base, and at least part of the first body is arranged in the second groove. In the first body, at least part of the first body is arranged in the second groove. Optionally, the dimension of the first body in the first direction is smaller than or equal to or larger than the dimension of the second groove in the first direction.

It should be noted that the base may be provided with the first recess only at the first side; alternatively, the base is provided with a second recess only on the second side; alternatively, the base is provided with a first recess on the first side and the base is provided with a second recess on the second side. The above conditions are flexibly set according to actual requirements.

In the technical scheme defined by the utility model, the first aspect can play a role in positioning or limiting the welding pin by arranging the grooves (the first groove and/or the second groove); in the second aspect, the welding leg is in closer contact with the base after press fitting, and the press fitting effect is better; in the third aspect, the solder pins can be hidden to a certain extent, only the parts which need to be soldered with the circuit board can be exposed, interference with other components is not easy to occur, and the circuit board is more attractive.

In addition, the technical scheme provided by the utility model can also have the following additional technical characteristics:

in the above technical solution, at least part of the first body is disposed in the first groove, and at least part of the second body is disposed in the second groove; or at least part of the first body is arranged in the second groove, and at least part of the second body is arranged in the first groove.

In the technical scheme, the welding leg penetrates through the base in a forward mounting mode, the first body is arranged on the first side of the base, the second body is arranged on the second side of the base, at least part of the first body is arranged in the first groove, and at least part of the second body is arranged in the second groove. In the first body, at least part of the first body is arranged in the first groove. Optionally, the dimension of the first body in the first direction is not smaller than the dimension of the first groove in the first direction. The first body can be flush with the opening of the first groove, or the first body can extend out of the first groove, so that the key is conveniently welded with the circuit board through the first body of the welding leg. In the second body, at least part of the second body is arranged in the second groove. Optionally, the dimension of the second body in the first direction is smaller than or equal to or larger than the dimension of the second groove in the first direction.

By arranging the first groove and the second groove, the first groove can limit the first body of the welding leg, and the second groove can limit the second body of the welding leg; in the second aspect, the welding leg is in closer contact with the base after press fitting, and the press fitting effect is better; in the third aspect, the solder pins can be hidden to a certain extent, only the parts which need to be soldered with the circuit board can be exposed, interference with other components is not easy to occur, and the circuit board is more attractive.

Or, the welding leg is arranged on the base in a penetrating way in a reverse way, the first body is arranged on the second side of the base, the second body is arranged on the first side of the base, at least part of the second body is arranged in the first groove, and at least part of the first body is arranged in the second groove. In the second body, at least part of the second body is arranged in the first groove. Optionally, the dimension of the second body in the first direction is not smaller than the dimension of the first groove in the first direction. The second body can be flush with the opening of the first groove, or the second body can extend out of the first groove, so that the key is conveniently welded with the circuit board through the second body of the welding leg. In the first body, at least part of the first body is arranged in the second groove. Optionally, the dimension of the first body in the first direction is smaller than or equal to or larger than the dimension of the second groove in the first direction.

In the above technical solution, the number of the second bodies is at least two, the at least two second bodies are arranged on the first side, and the at least two second bodies are arranged in the same first groove; or at least two second bodies are arranged on the second side, and at least two second bodies are arranged in the same second groove.

In the technical scheme, the number of the second bodies is at least two, namely, the number of the second bodies can be two or more, and the second bodies are flexibly arranged according to actual requirements.

If the welding leg penetrates through the base in a reverse installation mode, the second body is arranged on the first side of the base, and the first body is arranged on the second side of the base. At least two second bodies are arranged in the same first groove. In this case, only one first groove may be provided. The first groove is a through groove, and the second body of the welding leg is all arranged in the through groove. In addition, as the welding legs in the shape of the staples are assembled in a press-fit mode, the fault tolerance rate is higher in the design mode, and the fact that one end of the second body is too long and is not matched with the first groove is avoided.

If the welding leg penetrates through the base in a positive installation mode, the first body is arranged on the first side of the base, and the second body is arranged on the second side of the base. At least two second bodies are arranged in the same second groove. In this case, only one second groove may be provided. The second groove is a through groove, and the second body of the welding leg is all arranged in the through groove. In addition, as the welding legs in the shape of the staples are assembled in a press-fit mode, the fault tolerance rate is higher in the design mode, and the fact that one end of the second body is too long and is not matched with the second groove is avoided.

In the above technical solution, the number of the second bodies is at least two, the at least two second bodies are arranged on the first side, the number of the first grooves is at least two, and each second body is arranged in a corresponding first groove; or at least two second bodies are arranged on the second side, the number of the second grooves is at least two, and each second body is arranged in one corresponding second groove.

If the welding leg penetrates through the base in a reverse installation mode, the second body is arranged on the first side of the base, and the first body is arranged on the second side of the base. The number of the first grooves is at least two, namely, the number of the second grooves can be two or more, and the second grooves are flexibly arranged according to actual requirements. Each second body is arranged in a corresponding first groove. The design mode is simple, and two or more small grooves replace one through groove, so that the structural strength of the base can be ensured.

If the welding leg penetrates through the base in a positive installation mode, the first body is arranged on the first side of the base, and the second body is arranged on the second side of the base. The number of the second grooves is at least two, namely, the number of the second grooves can be two or more, and the second grooves are flexibly arranged according to actual requirements. Each second body is arranged in a corresponding second groove. The design mode is simple, and two or more small grooves replace one through groove, so that the structural strength of the base can be ensured.

In the above technical solution, the base has a first side and a second side opposite to each other in a first direction, and a dimension of the first groove in the second direction is not smaller than a dimension of the second body in the second direction, and the second direction is perpendicular to the first direction.

In the technical scheme, the welding leg in the shape of the book nail is assembled in a press-fit mode, so that the fault tolerance rate is higher in the design mode, and the condition that one end of the second body is too long and is not matched with the first groove is avoided. Optionally, the first direction is a thickness direction of the base; the second direction is the length direction or the width direction of the base.

In the above technical solution, the base has a first side and a second side opposite to each other in a first direction, and a dimension of the second groove in the second direction is not smaller than a dimension of the second body in the second direction, and the second direction is perpendicular to the first direction.

In the technical scheme, the welding leg in the shape of the book nail is assembled in a press-fit mode, so that the fault tolerance rate is higher in the design mode, and the condition that one end of the second body is overlong and is not matched with the second groove is avoided. Optionally, the first direction is a thickness direction of the base; the second direction is the length direction or the width direction of the base.

In the technical scheme, the base is provided with the positioning part, and the welding leg penetrates through the base at the positioning part.

In this technical scheme, through setting up the location portion, the leg is installed in location portion department for the mounted position of leg is more accurate, and the workman of being convenient for operates. The welding leg can be directly clamped on the base of the key, the welding leg can be installed in a machining mode, the welding surface of the welding leg can be ensured to have no residue, the manufacturing process of the key is simplified, and the rejection rate of the key is reduced; the welding legs are installed in a machining mode, the positions, the number, the shape, the size and the like of the welding legs are not affected by the key forming process, the installation positions of the welding legs are more flexible, the welding legs are suitable for manufacturing keys of various types, and the universality of the welding legs is improved.

In the above technical scheme, the positioning part is a positioning hole, and the positioning hole is communicated with the first groove and/or the second groove.

In this technical solution, the positioning hole may or may not be in communication with the groove (the first groove and/or the second groove). Under the condition that the positioning hole is communicated with the groove, the processing is easy; under the condition that locating hole and recess do not communicate, the structural strength of base is higher.

In the technical scheme, the positioning part is a positioning hole, and the positioning hole is a through hole; or the positioning hole is a blind hole, and the opening of the blind hole faces the first body.

In this technical scheme, through setting up the location portion into the locating hole, when guaranteeing leg mounted position accuracy, the locating hole can effectively reduce the thickness of leg and base junction base for the in-process that the leg passed the base, the resistance that receives was littleer, and then makes the wearing process of leg smoother, avoids the wearing of leg to establish the position offset.

The locating hole is the blind hole, and the opening of blind hole is towards first body for the leg joint is inseparabler behind the base, avoids the leg to cluster and moves with the cooperation of base.

The locating hole is the through-hole, and the through-hole can make the welding leg receive less in the resistance of wearing to establish the in-process, further promotes the accuracy of welding leg position.

Optionally, the positioning parts are multiple and are symmetrically arranged relative to the center of the base. Alternatively, the number of the positioning parts is four, and the positioning parts are divided into four parts relative to the center of the base, namely, one positioning part is arranged every 90 degrees. Optionally, two positioning parts are arranged on two opposite sides of the base, namely, one positioning part is arranged at each interval of 180 degrees.

In the above technical solution, the fillets further include: and one end of the connecting part is connected with the first body, and the other end of the connecting part is connected with the second body.

In this technical solution, the fillets further comprise a connection portion. One end of the connecting part is connected with the first body, and the other end of the connecting part is connected with the second body. The first body is connected with the second body through the connecting part. Optionally, the number of the second bodies is at least two, that is, the number of the second bodies can be two or more, and the second bodies are flexibly set according to actual requirements. The number of the connecting parts is at least two, namely, the number of the connecting parts can be two or more, and the second body is flexibly arranged according to actual requirements. Each second body is connected with the first body through a corresponding connecting part. Alternatively, the fillets are staple-shaped or approximate staple-shaped. In other words, the first body, the connecting portion and the second body constitute or approximate a staple structure. One of the first body and the second body is arranged on the first side of the base, and the other of the first body and the second body is arranged on the second side of the base. When the welding leg is arranged on the base in a penetrating manner, the first body is arranged on the first side of the base, and the second body is arranged on the second side of the base; when the welding leg is penetrated in the base in a reverse installation mode, the first body is arranged on the second side of the base, and the second body is arranged on the first side of the base.

Optionally, the welding leg is an integral structure, namely, the first body, the connecting portion and the second body are an integral structure, and compared with a post-processing mode, the welding leg is good in mechanical property and high in connection strength, is favorable for reducing the number of parts and improves the assembly efficiency.

Optionally, the other end of one second body extends to another second body in at least two second bodies, and first body and second body can press from both sides the base tightly, ensure that the leg installation is firm, extension button's life.

Optionally, the other end of one of the at least two second bodies extends away from the other second body, such that the cross section of the fillets is "like" or approximately "like". Because the first body and the second body are respectively positioned at the two sides of the connecting part, the stress of the base is more uniform, the deformation of the base is effectively avoided, and the planeness of the welding leg is further improved, so that the welding leg is in closer and firmer contact with the circuit board.

Optionally, the soldering leg further includes a soldering layer, and the soldering layer is wrapped on the outer sides of the first body or the at least two second bodies. Through setting up the weld layer for the material selection to first body or second body is more extensive, effectively reduces the material cost of leg.

Additional aspects and advantages of the present utility model will be made apparent from the description which follows, or may be learned by practice of the utility model.

Drawings

FIG. 1 shows a first schematic diagram of a key according to one embodiment of the utility model;

FIG. 2 shows a schematic cross-sectional view of the A-A plane of FIG. 1;

FIG. 3 shows a second schematic diagram of a key according to one embodiment of the utility model;

FIG. 4 shows a first cross-sectional view of the B-B plane of FIG. 3;

FIG. 5 shows a second cross-sectional view of the B-B side of FIG. 3;

FIG. 6 shows a third schematic diagram of a key according to an embodiment of the utility model;

FIG. 7 shows a fourth schematic diagram of a key according to an embodiment of the utility model;

FIG. 8 shows a fifth schematic diagram of a key according to an embodiment of the utility model;

FIG. 9 shows a sixth schematic diagram of a key according to an embodiment of the utility model;

FIG. 10 shows a schematic cross-sectional view of the C-C plane of FIG. 9;

FIG. 11 shows a seventh schematic representation of a key according to an embodiment of the utility model;

FIG. 12 shows a first cross-sectional view of the D-D plane of FIG. 11;

FIG. 13 shows an eighth schematic diagram of a key according to an embodiment of the utility model;

FIG. 14 shows a ninth schematic representation of a key according to an embodiment of the utility model;

FIG. 15 shows a schematic cross-sectional view of the E-E plane of FIG. 14;

FIG. 16 shows a tenth schematic view of a key according to one embodiment of the utility model;

FIG. 17 shows a schematic cross-sectional view of the F-F plane of FIG. 16;

FIG. 18 shows a second cross-sectional view of the D-D plane of FIG. 11;

fig. 19 shows a third schematic cross-sectional view of the D-D plane of fig. 11.

The correspondence between the reference numerals and the component names in fig. 1 to 19 is:

100: a key; 110: a base; 111: a first side; 112: a second side; 113: a positioning part; 120: welding feet; 121: a first body; 122: a second body; 123: a connection part; 130: a first groove; 140: a second groove; 150: a support part; 160: a pressing part; a: a first direction; b: a second direction.

Detailed Description

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

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model, however, embodiments of the utility model may be practiced otherwise than as described herein, and therefore the scope of the utility model is not limited to the specific embodiments disclosed below.

A key 100 provided according to some embodiments of the present utility model is described below with reference to fig. 1 to 19.

In one embodiment according to the present utility model, as shown in fig. 1, 2, 3, 4, 5, 8, 9, 10, 11, 12, 14, 15, 16, 17, 18 and 19, the key 100 includes a base 110, a solder tail 120, at least one first groove 130 and/or at least one second groove 140. Wherein the base 110 mainly functions as a mounting carrier. Optionally, the base 110 is a silica gel structure. Optionally, the key 100 further includes a supporting portion 150, a pressing portion 160, and conductive contacts. One end of the supporting part 150 is connected to the base 110, and the other end of the supporting part 150 is connected to the pressing part 160. The conductive contact is provided at one end of the pressing portion 160 toward the base 110, and the conductive contact is movable with respect to the base 110. Alternatively, the supporting part 150 and the base 110 are relatively fixed in an adhesive manner, so that the connection manner is simple and the operation is convenient; or, the supporting part 150 and the base 110 are of an integrated structure, and compared with a post-processing mode, the structure has the advantages of good mechanical property and high connection strength, is beneficial to reducing the number of parts and improves the assembly efficiency. Alternatively, the pressing portion 160 and the supporting portion 150 are relatively fixed by adhesion, and the connection manner is simple and convenient to operate.

Alternatively, the cross-section of the base 110 is square, rectangular or circular. Of course, the cross-section of the base 110 may be any other shape, such as triangular, pentagonal, hexagonal, etc. The key 100 of the present utility model can be applied to various fields such as a piano, a keyboard, etc., by setting the cross section of the base 110 to different shapes. Alternatively, when the cross section of the base 110 is square, rectangular or other polygonal shape, the corner positions of the base 110 are provided with chamfers or fillets. Through setting up chamfer or fillet, can reduce the occupation of button 100 to the space, can also make button 100 more pleasing to the eye.

Further, the solder fillets 120 penetrate the base 110. The fillets 120 include a first body 121 and a second body 122 connected. Optionally, the number of the second bodies 122 is at least two, that is, the number of the second bodies 122 may be two or more, and the second bodies 122 are flexibly set according to actual requirements. Optionally, the fillets 120 further include a connection 123. One end of the connection portion 123 is connected to the first body 121, and the other end of the connection portion 123 is connected to the second body 122. The first body 121 and the second body 122 are connected by a connection portion 123. Alternatively, the number of the connecting portions 123 is at least two, that is, the number of the connecting portions 123 may be two or more, and the second body 122 may be flexibly set according to actual requirements. Each second body 122 is connected to the first body 121 through a corresponding one of the connecting portions 123. Alternatively, the fillets 120 are staple-shaped or approximate staple-shaped. In other words, the first body 121, the connecting portion 123, and the second body 122 constitute a staple structure or approximate a staple structure. One of the first body 121 and the second body 122 is disposed on the first side 111 of the base 110, and the other of the first body 121 and the second body 122 is disposed on the second side 112 of the base 110. As shown in fig. 1, 2, 3, 4, 5, 8, 9, 10, 11, 12, 14, 15, 16 and 17, when the solder leg 120 is inserted through the base 110 in a positive manner, the first body 121 is disposed on the first side 111 of the base 110, and the second body 122 is disposed on the second side 112 of the base 110; as shown in fig. 18, when the solder tail 120 is reversely inserted into the base 110, the first body 121 is disposed on the second side 112 of the base 110, and the second body 122 is disposed on the first side 111 of the base 110.

Further, the first recess 130 is disposed on the first side 111 of the base 110. The number of the first grooves 130 is at least one, i.e., the number of the first grooves 130 may be one, two or more, and the first grooves 130 are flexibly arranged according to actual requirements in consideration of the limit effect of the welding pins 120, the press-fitting effect, the structural strength of the base 110 and other factors. At least a portion of the first body 121 and/or at least a portion of the second body 122 is disposed within the first recess 130. When the solder tail 120 is disposed on the base 110 in a positive manner, the first body 121 is disposed on the first side 111 of the base 110, and the second body 122 is disposed on the second side 112 of the base 110, at least a portion of the first body 121 is disposed in the first recess 130. In the first body 121, at least part of the first recess 130 is disposed. Alternatively, the size of the first body 121 in the first direction a is not smaller than the size of the first groove 130 in the first direction a. The first body 121 can be flush with the opening of the first groove 130, or the first body 121 can extend out of the first groove 130, so that the key 100 can be conveniently welded with the circuit board through the first body 121 of the soldering leg 120; when the solder tail 120 is reversely disposed on the base 110, the first body 121 is disposed on the second side 112 of the base 110, and the second body 122 is disposed on the first side 111 of the base 110, at least a portion of the second body 122 is disposed in the first recess 130. In the second body 122, at least part is disposed in the first recess 130. Optionally, the dimension of the second body 122 in the first direction a is not smaller than the dimension of the first groove 130 in the first direction a. The second body 122 can be flush with the opening of the first groove 130, or the second body 122 can extend out of the first groove 130, so as to facilitate the key 100 to be soldered with the circuit board through the second body 122 of the soldering leg 120.

Further, the second groove 140 is disposed on the second side 112 of the base 110. The number of the second grooves 140 is at least one, i.e., the number of the second grooves 140 may be one, two or more, and the second grooves 140 may be flexibly arranged according to actual requirements in consideration of the limit effect of the welding pins 120, the press-fitting effect, the structural strength of the base 110, and other factors. At least a portion of the second body 122 and/or at least a portion of the first body 121 is disposed within the second recess 140. When the solder tail 120 is disposed on the base 110 in a positive manner, the first body 121 is disposed on the first side 111 of the base 110, and the second body 122 is disposed on the second side 112 of the base 110, at least a portion of the second body 122 is disposed in the second recess 140. In the second body 122, at least part of the second recess 140 is disposed. Alternatively, the dimension of the second body 122 in the first direction a is less than or equal to or greater than the dimension of the second groove 140 in the first direction a; when the solder tail 120 is reversely disposed on the base 110, the first body 121 is disposed on the second side 112 of the base 110, and the second body 122 is disposed on the first side 111 of the base 110, at least a portion of the first body 121 is disposed in the second recess 140. In the first body 121, at least part of the first body is disposed in the second recess 140. Alternatively, the size of the first body 121 in the first direction a is smaller than or equal to or greater than the size of the second groove 140 in the first direction a.

It should be noted that the base 110 may be provided with the first recess 130 only at the first side 111; alternatively, the base 110 is provided with the second recess 140 only at the second side 112; alternatively, the base 110 is provided with a first recess 130 at the first side 111 and the base 110 is provided with a second recess 140 at the second side 112. The above conditions are flexibly set according to actual requirements.

In the technical solution defined in the present utility model, by providing the grooves (the first groove 130 and/or the second groove 140), the first aspect can play a role in positioning or limiting the solder pin 120; in the second aspect, the contact between the welding leg 120 and the base 110 after press fitting is tighter, and the press fitting effect is better; in the third aspect, the solder fillets 120 can be hidden to some extent, only the portions to be soldered to the circuit board can be exposed, interference with other components is less likely to occur, and the appearance is more attractive.

In one embodiment according to the present utility model, as shown in fig. 1, 2, 3, 4, 5, 8, 9, 10, 11, 12, 14, 15, 16 and 17, the solder feet 120 are disposed through the base 110 in a positive manner, the first body 121 is disposed on the first side 111 of the base 110, the second body 122 is disposed on the second side 112 of the base 110, at least a portion of the first body 121 is disposed in the first recess 130, and at least a portion of the second body 122 is disposed in the second recess 140. In the first body 121, at least part of the first recess 130 is disposed. Alternatively, the size of the first body 121 in the first direction a is not smaller than the size of the first groove 130 in the first direction a. The first body 121 can be flush with the opening of the first groove 130, or the first body 121 can extend out of the first groove 130, so as to facilitate the key 100 to be soldered with the circuit board through the first body 121 of the soldering leg 120. In the second body 122, at least part of the second recess 140 is disposed. Alternatively, the dimension of the second body 122 in the first direction a is less than or equal to or greater than the dimension of the second groove 140 in the first direction a.

By providing the first groove 130 and the second groove 140, in the first aspect, the first groove 130 can limit the first body 121 of the solder tail 120, and the second groove 140 can limit the second body 122 of the solder tail 120; in the second aspect, the contact between the welding leg 120 and the base 110 after press fitting is tighter, and the press fitting effect is better; in the third aspect, the solder fillets 120 can be hidden to some extent, only the portions to be soldered to the circuit board can be exposed, interference with other components is less likely to occur, and the appearance is more attractive.

In another embodiment, as shown in fig. 18, the solder tail 120 is disposed through the base 110 in a reverse manner, the first body 121 is disposed on the second side 112 of the base 110, the second body 122 is disposed on the first side 111 of the base 110, at least a portion of the second body 122 is disposed in the first groove 130, and at least a portion of the first body 121 is disposed in the second groove 140. In the second body 122, at least part is disposed in the first recess 130. Optionally, the dimension of the second body 122 in the first direction a is not smaller than the dimension of the first groove 130 in the first direction a. The second body 122 can be flush with the opening of the first groove 130, or the second body 122 can extend out of the first groove 130, so as to facilitate the key 100 to be soldered with the circuit board through the second body 122 of the soldering leg 120. In the first body 121, at least part of the first body is disposed in the second recess 140. Alternatively, the size of the first body 121 in the first direction a is smaller than or equal to or greater than the size of the second groove 140 in the first direction a.

In one embodiment according to the present utility model, the number of the second bodies 122 is at least two, that is, the number of the second bodies 122 may be two or more, and the second bodies 122 are flexibly arranged according to actual requirements.

The solder tail 120 is reversely disposed on the base 110, the second body 122 is disposed on the first side 111 of the base 110, and the first body 121 is disposed on the second side 112 of the base 110. At least two second bodies 122 are disposed in the same first recess 130. In this case, only one of the first grooves 130 may be provided. The first groove 130 is a through groove, and the second body 122 of the soldering leg 120 is entirely disposed in the through groove, so that the design is simple, and only one first groove 130 is required to be disposed to mount the second body 122. In addition, since the welding leg 120 in the shape of the staple is assembled by press fitting, the fault tolerance is higher in the design mode, and the condition that one end of the second body 122 is excessively long and is not matched with the first groove 130 is avoided.

In another embodiment, the number of the second bodies 122 is at least two, that is, the number of the second bodies 122 may be two or more, and the second bodies 122 are flexibly set according to actual requirements.

The solder tail 120 is disposed through the base 110 in a positive manner, the first body 121 is disposed on the first side 111 of the base 110, and the second body 122 is disposed on the second side 112 of the base 110. At least two second bodies 122 are disposed in the same second recess 140. In this case, only one second groove 140 may be provided. The second groove 140 is a through groove, and the second body 122 of the soldering leg 120 is entirely disposed in the through groove, so that the design is simple, and only one second groove 140 is required to be disposed to mount the second body 122. In addition, since the leg 120 in the shape of the staple is assembled by press-fitting, the fault tolerance is higher in this design, and the second body 122 is prevented from being excessively long and being mismatched with the second groove 140.

The solder tail 120 is reversely disposed on the base 110, the second body 122 is disposed on the first side 111 of the base 110, and the first body 121 is disposed on the second side 112 of the base 110. The number of the first grooves 130 is at least two, that is, the number of the second grooves 140 can be two or more, and the second grooves 140 can be flexibly arranged according to actual requirements. Each second body 122 is disposed in a corresponding one of the first grooves 130. The design mode is simple, and two or more small grooves replace one through groove, so that the structural strength of the base 110 can be ensured.

As shown in fig. 5, the solder tail 120 is disposed through the base 110 in a positive manner, the first body 121 is disposed on the first side 111 of the base 110, and the second body 122 is disposed on the second side 112 of the base 110. The number of the second grooves 140 is at least two, that is, the number of the second grooves 140 can be two or more, and the second grooves 140 can be flexibly arranged according to actual requirements. Each second body 122 is disposed in a corresponding one of the second grooves 140. The design mode is simple, and two or more small grooves replace one through groove, so that the structural strength of the base 110 can be ensured.

In one embodiment according to the present utility model, the base 110 has a first side 111 and a second side 112 disposed opposite to each other in a first direction a, and a dimension of the first recess 130 in a second direction b is not smaller than a dimension of the second body 122 in the second direction b, and the second direction b is perpendicular to the first direction a. The staple-shaped fillets 120 are assembled by press fitting, which provides a higher tolerance to prevent an excessive length of the second body 122 from being mismatched with the first recess 130. Alternatively, the first direction a is a thickness direction of the base 110; the second direction b is a length direction or a width direction of the base 110.

In one embodiment according to the present utility model, as shown in fig. 4, 5, 12, 17, 18 and 19, the base 110 has a first side 111 and a second side 112 disposed opposite to each other in a first direction a, and a dimension of the second groove 140 in a second direction b is not smaller than a dimension of the second body 122 in the second direction b, and the second direction b is perpendicular to the first direction a. The pin 120 in the shape of a staple is assembled by press fitting, which is more tolerant of faults and avoids the second body 122 from being excessively long at one end and not matching the second groove 140. Alternatively, the first direction a is a thickness direction of the base 110; the second direction b is a length direction or a width direction of the base 110.

In one embodiment according to the present utility model, as shown in fig. 6, 7 and 8 and 13, a positioning portion 113 is provided on the base 110, and the fillets 120 are provided on the base 110 at the positioning portion 113. By providing the positioning portion 113, the fillets 120 are mounted at the positioning portion 113, so that the mounting positions of the fillets 120 are more accurate, and the operations of workers are facilitated. The welding leg 120 can be directly clamped on the base 110 of the key 100, the welding leg 120 can be installed in a machining mode, the welding surface of the welding leg 120 can be ensured to have no residue, the manufacturing process of the key 100 is simplified, and the rejection rate of the key 100 is reduced; the welding legs 120 are installed in a machining mode, the positions, the number, the shape, the size and the like of the welding legs 120 are not affected by the forming process of the keys 100, the installation positions of the welding legs 120 are more flexible, the welding legs are suitable for manufacturing keys 100 of various types, and the universality of the welding legs 120 is improved.

Further, the positioning portion 113 is a positioning hole, and the positioning hole is in communication with the first groove 130 and/or the second groove 140. The locating holes may or may not be in communication with the grooves (first groove 130 and/or second groove 140). Under the condition that the positioning hole is communicated with the groove, the processing is easy; in the case that the positioning hole is not communicated with the groove, the structural strength of the base 110 is higher.

Further, the positioning portion 113 is a positioning hole. Through setting the location portion 113 as the locating hole, when guaranteeing the leg 120 mounted position accuracy, the locating hole can effectively reduce the thickness of the base 110 of leg 120 and base 110 junction for the in-process that leg 120 passed base 110 receives less resistance, and then makes the wearing process of leg 120 more smooth and easy, avoids the wearing position deviation of leg 120.

The positioning hole is a blind hole, and the opening of the blind hole faces the first body 121, so that the welding leg 120 is clamped behind the base 110, and is more tightly matched with the base 110, and the welding leg 120 is prevented from moving in series.

The positioning holes are through holes, so that resistance applied to the soldering leg 120 in the penetrating process is smaller, and the accuracy of the position of the soldering leg 120 is further improved.

Alternatively, the positioning portions 113 are plural and symmetrically disposed with respect to the center of the base 110. Alternatively, the number of the positioning portions 113 is four, and the positioning portions 113 are disposed at four equal intervals with respect to the center of the base 110, that is, at 90 degrees. Alternatively, two positioning portions 113 are provided on opposite sides of the base 110, i.e., one positioning portion 113 is provided at 180 degrees.

In one embodiment according to the present utility model, the fillets 120 further include a connection 123 as shown in fig. 4, 5, 12, 17, 18, and 19. One end of the connection portion 123 is connected to the first body 121, and the other end of the connection portion 123 is connected to the second body 122. The first body 121 and the second body 122 are connected by a connection portion 123. Optionally, the number of the second bodies 122 is at least two, that is, the number of the second bodies 122 may be two or more, and the second bodies 122 are flexibly set according to actual requirements. The number of the connecting portions 123 is at least two, that is, the number of the connecting portions 123 may be two or more, and the second body 122 may be flexibly set according to actual requirements. Each second body 122 is connected to the first body 121 through a corresponding one of the connecting portions 123. Alternatively, the fillets 120 are staple-shaped or approximate staple-shaped. In other words, the first body 121, the connecting portion 123, and the second body 122 constitute a staple structure or approximate a staple structure. One of the first body 121 and the second body 122 is disposed on the first side 111 of the base 110, and the other of the first body 121 and the second body 122 is disposed on the second side 112 of the base 110. When the solder tail 120 is inserted through the base 110 in a positive manner, the first body 121 is disposed on the first side 111 of the base 110, and the second body 122 is disposed on the second side 112 of the base 110; when the solder tail 120 is reversely inserted into the base 110, the first body 121 is disposed on the second side 112 of the base 110, and the second body 122 is disposed on the first side 111 of the base 110.

Optionally, the soldering leg 120 is an integral structure, that is, the first body 121, the connecting portion 123 and the second body 122 are an integral structure, and compared with a post-processing mode, the soldering leg is good in mechanical property and high in connection strength, and is beneficial to reducing the number of parts and improving the assembly efficiency.

Optionally, the other end of one second body 122 of the at least two second bodies 122 extends toward the other second body 122, and the first body 121 and the second body 122 can clamp the base 110, so as to ensure the mounting of the solder leg 120 to be firm and prolong the service life of the key 100.

Alternatively, as shown in fig. 19, the other end of one second body 122 of the at least two second bodies 122 extends away from the other second body 122, so that the cross section of the fillets 120 is "like" or approximately "like" a few ". Because the first body 121 and the second body 122 are respectively located at two sides of the connecting portion 123, the stress of the base 110 is more uniform, the deformation of the base 110 is effectively avoided, and the flatness of the solder leg 120 is further improved, so that the contact between the solder leg 120 and the circuit board is more compact and firm.

Optionally, the fillets 120 further include a solder layer, and the solder layer wraps the first body 121 or the outer sides of at least two second bodies 122. By arranging the welding layer, the materials of the first body 121 or the second body 122 are more widely selected, and the material cost of the welding leg 120 is effectively reduced.

According to the key embodiment of the utility model, the first aspect can play a role of positioning or limiting the welding pin by arranging the grooves (the first groove and/or the second groove); in the second aspect, the welding leg is in closer contact with the base after press fitting, and the press fitting effect is better; in the third aspect, the solder pins can be hidden to a certain extent, only the parts which need to be soldered with the circuit board can be exposed, interference with other components is not easy to occur, and the circuit board is more attractive.

In the present utility model, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more, unless expressly defined otherwise. The terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; "coupled" may be directly coupled or indirectly coupled through intermediaries. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the description of the present utility model, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "front", "rear", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or units referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present utility model.

In the description of the present specification, the terms "one embodiment," "some embodiments," "particular embodiments," and the like, mean 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 utility model. In this specification, 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 utility model, and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A key, comprising:

a base (110) having oppositely disposed first (111) and second (112) sides;

a welding leg (120) penetrating through the base (110), wherein the welding leg (120) comprises a first body (121) and a second body (122) which are connected;

at least one first groove (130), wherein the first groove (130) is arranged on the first side (111), and at least part of the first body (121) and/or at least part of the second body (122) are arranged in the first groove (130); and/or

At least one second groove (140), wherein the second groove (140) is arranged on the second side (112), and at least part of the second body (122) and/or at least part of the first body (121) are arranged in the second groove (140).

2. The key according to claim 1, wherein at least part of the first body (121) is arranged in the first recess (130) and at least part of the second body (122) is arranged in the second recess (140); or (b)

At least part of the first body (121) is disposed in the second groove (140), and at least part of the second body (122) is disposed in the first groove (130).

3. The key according to claim 1, wherein the number of the second bodies (122) is at least two, at least two of the second bodies (122) are disposed on the first side (111), and at least two of the second bodies (122) are disposed in the same first groove (130); or (b)

At least two second bodies (122) are arranged on the second side (112), and at least two second bodies (122) are arranged in the same second groove (140).

4. The key according to claim 1, wherein the number of the second bodies (122) is at least two, at least two of the second bodies (122) are disposed on the first side (111), the number of the first grooves (130) is at least two, and each of the second bodies (122) is disposed in a corresponding one of the first grooves (130); or (b)

The second sides (112) are arranged on the second bodies (122), the number of the second grooves (140) is at least two, and each second body (122) is arranged in a corresponding second groove (140).

5. The key according to claim 4, wherein the base (110) has the first side (111) and the second side (112) arranged opposite to each other in a first direction, and a dimension of the first recess (130) in a second direction perpendicular to the first direction is not smaller than a dimension of the second body (122) in the second direction.

6. The key according to claim 4, wherein the base (110) has the first side (111) and the second side (112) arranged opposite to each other in a first direction, and the second recess (140) has a dimension in a second direction, which is perpendicular to the first direction, that is not smaller than a dimension in the second direction of the second body (122).

7. The key according to any one of claims 1 to 6, wherein a positioning portion (113) is provided on the base (110), and the solder tail (120) is provided on the base (110) in a penetrating manner at the positioning portion (113).

8. The key according to claim 7, wherein the positioning portion (113) is a positioning hole, which communicates with the first recess (130) and/or the second recess (140).

9. The key according to claim 7, wherein the positioning portion (113) is a positioning hole, and the positioning hole is a through hole; or the positioning hole is a blind hole, and the opening of the blind hole faces the first body (121).

10. The key according to any of the claims 1 to 6, wherein the fillets (120) further comprise:

and a connecting part (123), wherein one end of the connecting part (123) is connected with the first body (121), and the other end of the connecting part (123) is connected with the second body (122).