CN220138165U - Key structure and mobile power supply - Google Patents

Abstract

The utility model discloses a key structure and a mobile power supply. The key structure comprises a key board, a shell and keys. The keypad is arranged in the shell, and comprises a main board and contacts arranged on the surface of the main board. The shell comprises a shell body and a first water retaining part arranged on the shell body, a key hole is formed in the shell body, and the key hole penetrates through the shell body and the first water retaining part. The key comprises a pressing piece and a first sealing piece, wherein the first sealing piece is abutted with the first water blocking part and seals the key hole, the pressing piece is connected with the first sealing piece, and the first sealing piece is configured to be contacted with the contact when the pressing piece is in a pressing state and separated from the contact when the pressing piece is in a non-pressing state. The key hole is sealed through the first sealing piece which is used for contacting or separating with the contact in the key, so that the waterproof effect is realized, an additional sealing structure is not required to be arranged, and the integral structure is simplified.

Description

Key structure and mobile power supply

Technical Field

The utility model relates to the technical field of mobile power supplies, in particular to a key structure and a mobile power supply.

Background

The key structure is used as a matching device of the mobile power supply and is widely applied to the mobile power supply. As the use environment is wider and wider, the waterproof performance of the mobile power supply is required by users to be higher and higher.

The key structure of the mobile power supply is sealed by adopting sealing structures such as a sealing ring or a sealing bracket which are arranged independently to realize waterproof, so that the overall structure of the key structure is generally complex, the assembly is difficult, and the production cost is high.

Disclosure of Invention

In view of this, it is necessary to provide a key structure and a portable power source having a good waterproof effect without providing a separate sealing structure.

Some embodiments of the present utility model provide a key structure including a key sheet, a housing, and keys. The keypad is arranged in the shell, and comprises a main board and contacts arranged on the surface of the main board. The shell comprises a shell body and a first water retaining part arranged on the shell body, a key hole is formed in the shell body, and the key hole penetrates through the shell body and the first water retaining part. The key comprises a pressing piece and a first sealing piece, wherein the first sealing piece is abutted with the first water blocking part and seals the key hole, the pressing piece is connected with the first sealing piece, and the first sealing piece is configured to be contacted with the contact when the pressing piece is in a pressing state and separated from the contact when the pressing piece is in a non-pressing state.

Above-mentioned button structure is arranged in sealing the button hole with the first sealing member of contact or separation in the button, realizes waterproof, need not to set up extra seal structure, simplifies overall structure, and convenient assembly, and reduce cost.

In some embodiments, the first seal includes a seal body that abuts against the first water blocking portion and seals the key hole, and a trigger portion that is connected to the seal body and is received in the key hole.

In some embodiments, the seal further comprises a second seal connected with the trigger portion and abutting against and sealing-connected with the main board, the second seal, the trigger portion and the main board surrounding to form a closed housing cavity, and the contacts are located in the housing cavity. Through setting up the second sealing member, can avoid getting into the liquid of key hole and get into the chamber of acceping that holds the contact, improve the water-proof effects.

In some embodiments, a second seal is positioned between the housing and the key pad and covers the key hole, and a surface of the second seal facing away from the main plate is recessed to form a receiving groove. The holding tank is used for holding the liquid that gets into the key hole, further improves the water-proof effects.

In some embodiments, the shell further comprises a second water blocking portion, the second water blocking portion is disposed on one side of the shell body away from the first water blocking portion and is contained in the containing groove, and the second water blocking portion abuts against and is in sealing connection with the side wall of the containing groove.

In some embodiments, the first seal further comprises a sealing flange disposed at a periphery of the sealing body, the sealing flange abutting and sealingly connected with an outer sidewall of the first water deflector.

In some embodiments, the key structure further includes a cover plate disposed on a surface of the housing and provided with a mounting hole, and the pressing member is adaptively mounted in the mounting hole.

In some embodiments, the pressing member includes a pressing portion and a shoulder portion disposed at a periphery of the pressing portion, the pressing portion being received in the mounting hole, the shoulder portion being configured to abut against the cover plate when the pressing member is in the non-pressing state.

In some embodiments, the housing and the cover plate enclose a drain cavity, the cover plate defines a drain port, and the drain port is in communication with the drain cavity. The liquid entering the liquid discharging cavity is discharged through the liquid discharging port, so that the risk that the liquid enters the key hole through the liquid discharging cavity is reduced.

Some embodiments of the present utility model provide a mobile power supply, including the key structure in any of the above embodiments.

Drawings

Fig. 1 is a schematic structural diagram of a portable power source according to an embodiment of the utility model.

Fig. 2 is a perspective cross-sectional view of the mobile power supply shown in fig. 1.

Fig. 3 is a schematic structural diagram of a key and a housing of the mobile power supply shown in fig. 2.

Fig. 4 is a schematic cross-sectional view of a first seal and a second seal of the key of the mobile power supply shown in fig. 2.

Description of the main reference signs

Mobile power supply 200

Key structure 100

Housing 10

Key 20

Cover plate 30

Key sheet 40

Shell body 11

First water blocking portion 12

Top plate 111

Bottom plate 112

Side plate 113

Accommodation chamber 10a

Outer surface 111a

Inner surface 111b

Key hole 10b

Pressing piece 21

First seal 22

Pressing portion 211

Shoulder 212

Baffle 213

Liquid collecting tank 21a

Seal body 221

Trigger portion 222

First connection portion 223

Sealing flange 224

Second seal 23

Second connection portion 231

Sealing portion 232

Receiving groove 232a

Second water blocking portion 13

Motherboard 41

Contact 42

Accommodating chamber 40a

Liquid discharge chamber 30a

Mounting hole 30b

Top wall 31

Side wall 32

Liquid discharge port 30c

First concave portion 31a

Second concave portion 11a

Engagement groove 111c

Detailed Description

The following description of the technical solutions according to the embodiments of the present utility model will be given with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, but not all embodiments.

It is noted that when one component is considered to be "connected" to another component, it may be directly connected to the other component or intervening components may also be present. When an element is referred to as being "disposed" on another element, it can be directly on the other element or intervening elements may also be present. The terms "top," "bottom," "upper," "lower," "left," "right," "front," "rear," and the like are used herein for illustrative purposes only.

The term "vertical" is used to describe an ideal state between two components. In the actual production or use state, there may be an approximately vertical state between the two components. For example, in conjunction with the numerical description, perpendicular may refer to an angle between two straight lines ranging between 90++10°, perpendicular may also refer to a dihedral angle between two planes ranging between 90++10°, and perpendicular may also refer to an angle between a straight line and a plane ranging between 90++10°. The two components described as "perpendicular" may be considered "straight" or "planar" as they are considered "straight" or "planar" in that they are not strictly straight or planar, but may be substantially straight or planar in that they extend in a macroscopic manner.

The term "parallel" is used to describe an ideal state between two components. In an actual production or use state, there may be a state of approximately parallelism between the two components. For example, in connection with numerical descriptions, parallel may refer to an angle between two straight lines ranging between 180++10°, parallel may refer to a dihedral angle between two planes ranging between 180++10°, and parallel may refer to an angle between a straight line and a plane ranging between 180++10°. The two components described as "parallel" may be considered "straight" or "planar" as they are considered "straight" or "planar" in that they are not strictly straight or planar, but may be substantially straight or planar in that they extend in a macroscopic manner.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model.

The key structure is used as a matching device of the mobile power supply and is widely applied to the mobile power supply. As the use environment is wider and wider, the waterproof performance of the mobile power supply is required by users to be higher and higher. The key structure of the mobile power supply is sealed by adopting sealing structures such as a sealing ring or a sealing bracket which are arranged independently to realize waterproof, so that the overall structure of the key structure is generally complex, the assembly is difficult, and the production cost is high.

Therefore, the embodiment of the utility model provides a key structure which comprises a key board, a shell and keys. The keypad is arranged in the shell, and comprises a main board and contacts arranged on the surface of the main board. The shell comprises a shell body and a first water retaining part arranged on the shell body, a key hole is formed in the shell body, and the key hole penetrates through the shell body and the first water retaining part. The key comprises a pressing piece and a first sealing piece, wherein the first sealing piece is abutted with the first water blocking part and seals the key hole, the pressing piece is connected with the first sealing piece, and the first sealing piece is configured to be contacted with the contact when the pressing piece is in a pressing state and separated from the contact when the pressing piece is in a non-pressing state. According to the key structure provided by the embodiment of the utility model, the key holes are sealed through the first sealing piece which is used for contacting or separating with the contacts in the key, so that the waterproof effect is realized, an additional sealing structure is not required, the whole structure is simplified, the assembly is convenient, and the cost is reduced.

Referring to fig. 1, an embodiment of the present utility model provides a key structure 100, which includes a housing 10, keys 20, a cover 30 and a key board 40.

Referring to fig. 2, the housing 10 includes a housing body 11 and a first water blocking portion 12. The first water blocking portion 12 is provided on the surface of the case body 11.

The case body 11 is a closed case, and can be used as a case of the portable power source 200. The case body 11 includes a top plate 111, a bottom plate 112, and a plurality of side plates 113. The top plate 111 and the bottom plate 112 are disposed opposite to each other in the height direction of the key structure 100. Each of the side plates 113 connects edges of the top plate 111 and the bottom plate 112 on the same side, and the plurality of side plates 113, the top plate 111, and the bottom plate 112 enclose the accommodating chamber 10a. The housing chamber 10a is used for housing components such as a battery pack. In the present embodiment, the number of the side plates 113 is four. It will be appreciated that the number of side plates 113 may be set as desired. In other embodiments, the housing body 11 may be part of a closed housing, for example, the housing body 11 may include only the top plate 111, or may include only the top plate 111 and the plurality of side plates 113, and embodiments of the present utility model are not limited.

The top plate 111 comprises an outer surface 111a facing away from the receiving chamber 10a and an inner surface 111b facing towards the receiving chamber 10a. The first water blocking portion 12 is provided on the outer surface 111a. The case body 11 is provided with a key hole 10b for mounting the key 20, and the key hole 10b penetrates the top plate 111 and the first water blocking portion 12 in the height direction and communicates with the accommodation chamber 10a. The liquid falling on the outer surface 111a located outside the first water blocking portion 12 is blocked by the first water blocking portion 12, reducing the risk of external liquid entering the key hole 10b.

The top plate 111 of the housing body 11 and the first water blocking portion 12 may be integrally formed or separately formed and then assembled, and the embodiment of the present utility model is not limited thereto. The material of the housing 10 may include metal, such as aluminum alloy; or comprises a plastic such as AB S (acrylonitrile-butadiene-styrene copolymer) plastic or PC (polycarbonate) plastic, etc. In this embodiment, the housing 10 is made of PC plastic, and the top plate 111 of the housing body 11 and the first water blocking portion 12 are integrally formed.

Referring to fig. 2 and 3, the key 20 includes a pressing member 21 and a first sealing member 22 connected to each other. The pressing piece 21 includes a pressing portion 211, a shoulder portion 212, and a shutter 213. The pressing portion 211 has a substantially block shape. In some embodiments, the pressing portion 211 covers the first water blocking portion 12 as viewed in the height direction, so as to prevent the liquid falling on the surface of the pressing portion 211 from directly falling into the key hole 10b provided in the first water blocking portion 12, thereby achieving water resistance. The shoulder 212 is provided at the periphery of the pressing portion 211. The baffle 213 is provided at the periphery of the shoulder 212 and around the pressing portion 211. The liquid collecting groove 21a is formed between the baffle 213 and the pressing portion 211.

The material of the pressing member 21 may include at least one of metal or plastic. In some embodiments, the key 20 is made of a hard plastic such AS PS (polystyrene) plastic, ABS (acrylonitrile butadiene styrene) plastic, AS (styrene acrylonitrile copolymer) plastic, and hard PVC (polyvinyl chloride) plastic.

Referring to fig. 2 and 4 together, the first seal 22 abuts against the first water blocking portion 12 and seals the key hole 10b. The first seal 22 includes a seal body 221, a trigger portion 222, and a first connection portion 223. The seal main body 221 is substantially flat plate-like, abuts against a surface of the first water blocking portion 12 facing away from the outer surface 111a of the top plate 111 and covers the key hole 10b, and seals an opening of the key hole 10b facing away from the accommodation chamber 10a. The triggering portion 222 is provided at a surface of the sealing body 221 facing the key hole 10b and is accommodated in the key hole 10b for triggering the key sheet 40. The first connection portion 223 is provided at a surface of the sealing body 221 facing away from the key hole 10b for connecting the pressing portion 211 of the pressing piece 21.

The first seal 22 is made of a flexible material. In some embodiments, the material of the first seal 22 includes at least one of PP (polypropylene), PE (polyethylene), soft PVC (polyvinyl chloride), EVA (ethylene vinyl acetate), POE (polyethylene octene co-elastomer), or silicone. When the key 20 is pressed, the pressing member 21 pushes the first sealing member 22 to move toward the key sheet 40 to trigger the key sheet 40. During the pressing process, the sealing body 221 abutting against the first water blocking portion 12 is elastically deformed, so as to provide a restoring force for the rebound of the key 20. The restoring force of the rebound of the key 20 can be adjusted by adjusting the thickness of the sealing body 221 in the height direction. In some embodiments, the thickness of the sealing main body 221 in the height direction is 0.6-1.0 mm, so that the key 20 has better rebound performance, and better sealing performance is provided between the sealing main body 221 and the first water blocking portion 12.

In some embodiments, the first seal 22 further includes a sealing flange 224. The sealing flange 224 is connected with the sealing body 221 and disposed around the periphery of the sealing body 221, and abuts against and is sealingly connected with the outer surface of the sidewall of the first water blocking portion 12 facing away from the key hole 10b, so as to improve the sealability between the first seal 22 and the outer surface of the first water blocking portion 12. In other embodiments, the sealing flange 224 may abut and be sealingly connected with an inner surface of the sidewall of the first water deflector 12 facing the key hole 10b to improve the tightness between the first seal 22 and the outer surface of the first water deflector 12.

It will be appreciated that, by pressing the sealing body 221 and the sealing flange 224 against the surface of the first water blocking portion 12 toward the first water blocking portion 12 by the first sealing member 22 made of a flexible material, the sealing body 221 and the sealing flange 224 respectively abut against and are in sealing connection with the first water blocking portion 12. In some embodiments, the sealing body 221 and the sealing flange 224 may be adhered to the first water blocking portion 12 by an adhesive, further improving the sealability between the sealing body 221 and the sealing flange 224 and the first water blocking portion 12.

The sealing body 221, the triggering portion 222, the first connecting portion 223, and the sealing flange 224 may be integrally formed to form the first sealing member 22, or may be separately formed and then assembled to form the first sealing member 22. In this embodiment, the sealing body 221, the triggering portion 222, the first connection portion 223, and the sealing flange 224 are integrally formed through an injection molding process.

In some embodiments, the trigger portion 222 is smaller in size than the key hole 10b to form a gap between the trigger portion 222 and the sidewall of the key hole 10b. By providing the gap, movement of the trigger portion 222 in the key hole 10b is facilitated; and the size of the trigger portion 222 is reduced, thereby reducing the cost.

In some embodiments, the key 20 further comprises a second seal 23. The second seal 23 is connected to the trigger 222, is located between the top plate 111 of the case body 11 and the key sheet 40, and abuts against the key sheet 40. The second seal 23 covers the key hole 10b as viewed in the height direction, so that the liquid entering the key hole 10b is blocked by the second seal 23 from directly falling on the key sheet 40. Specifically, the second seal member 23 includes a second connection portion 231 and a seal portion 232. The second connection portion 231 is connected to the trigger portion 222, and is disposed around the periphery of the trigger portion 222. The second connection portion 231 is substantially flat plate-shaped, and the second connection portion 231 covers the key hole 10b as viewed in the height direction. The sealing portion 232 is connected to the second connection portion 231 and disposed around the circumference of the second connection portion 231. The sealing portion 232 is recessed inward away from the surface of the key sheet 40 to form a receiving groove 232a for receiving liquid entering from the key holes 10b and blocked by the second sealing member 23. In some embodiments, the receiving groove 232a is disposed around the periphery of the second connection portion 231 so that the liquid falling onto the surface of the second sealing member 23 can be received in the receiving groove 232 a.

The second seal 23 is made of a flexible material. In some embodiments, the material of the second seal member 23 includes at least one of PP (polypropylene), PE (polyethylene), soft PVC (polyvinyl chloride), EVA (ethylene-vinyl acetate copolymer), POE (polyethylene octene co-elastomer), or silicone. When the key 20 is pressed, the pressing member 21 pushes the first sealing member 22 to move toward the key board 40, and the first sealing member 22 drives the second sealing member 23 to move toward the key board 40. During the pressing process, the second connecting portion 231 and/or the accommodating groove 232a connected to the triggering portion 222 elastically deforms near the side wall of the second connecting portion 231, so as to provide a restoring force for the key 20 to rebound. By adjusting the thickness of the second connection portion 231 and/or the thickness of the sidewall of the receiving groove 232a, the restoring force of the rebound of the key 20 can be adjusted.

Referring to fig. 2, in some embodiments, the housing 10 further includes a second water blocking portion 13. The second water blocking portion 13 is disposed on the inner surface 111b of the top plate 111, is accommodated in the accommodation groove 232a, and abuts against and is sealed with a side wall of the accommodation groove 232a away from the second connection portion 231 to seal the accommodation groove 232a, preventing the liquid accommodated in the accommodation groove 232a from leaking out of the second seal 23 from the gap between the second seal 23 and the top plate 111 of the case body 11.

In some embodiments, the second water blocking portion 13 may be adhered to a sidewall of the accommodating groove 232a remote from the second connection portion 231 by an adhesive, further improving sealability between the second water blocking portion 13 and the accommodating groove 232 a.

The key sheet 40 is disposed in the accommodation chamber 10a of the housing 10. The key sheet 40 includes a main board 41 and contacts 42 provided on the surface of the main board 41. A key circuit (not shown) is disposed on the main board 41. The triggering portion 222 of the key 20 is configured to contact the contact 42 to activate the switch when the key 20 is in a pressed state, and to separate from the contact 42 to close the switch when the key 20 is in a non-pressed state.

The surface of the second sealing member 23 facing away from the housing body 11 abuts against the surface of the main board 41, and the second connection portion 231, the triggering portion 222, the sealing portion 232 of the second sealing member 23, and the main board 41 of the second sealing member 23 form a closed accommodating cavity 40a. The contact 42 is located within the receiving cavity 40a. The surface of the second sealing member 23 facing away from the case body 11 is also in sealing connection with the surface of the main plate 41 to prevent liquid located outside the second sealing member 23 from entering the receiving chamber 40a through the gap between the second sealing member 23 and the main plate 41.

In some embodiments, the second seal 23 may be adhered to the surface of the main board 41 by an adhesive, further improving the sealing between the second seal 23 and the main board 41.

The cover plate 30 is disposed on the outer surface 111a of the top plate 111, and the cover plate 30 and the top plate 111 enclose a liquid discharge chamber 30a. The cover plate 30 is provided with mounting holes 30b. The pressing portion 211 of the pressing member 21 is fittingly mounted in the mounting hole 30b, and is movable in the height direction in the mounting hole 30b. In some embodiments, the sidewall of the pressing portion 211 abuts against the sidewall of the mounting hole 30b to improve sealability between the pressing portion 211 and the cap plate 30. In other embodiments, a preset gap may be provided between the pressing portion 211 and the sidewall of the mounting hole 30b, the preset gap being configured to enable the pressing portion 211 to move in the height direction in the mounting hole 30b and to block foreign substances from entering between the cover plate 30 and the top plate 111 through the mounting hole 30b.

The shoulder 212 of the pressing piece 21 is configured to abut against the cover plate 30 when the key 20 is in the non-pressed state. In some embodiments, the cover plate 30 includes a stopper (not shown) protruding from a surface thereof facing the top plate 111, the stopper being disposed around a periphery of the mounting hole 30b and abutting against the baffle 213 of the key 20 to block the liquid contained in the sump 21a from leaking out of the sump 21a from a gap between the baffle 213 and the cover plate 30.

Specifically, the cover plate 30 includes a top wall 31 and a side wall 32 connected to each other. In the height direction, the edges of the adjacent three side plates 113 protrude beyond the top plate 111. The adjacent three side plates 113 and the top plate 111 enclose a receiving groove, and the top wall 31 of the cover plate 30 closes the receiving groove to form a liquid discharge chamber 30a. The side wall 32 of the cover plate 30 is located on the side of the remaining one side plate 113 remote from the top plate 111 and the bottom plate 112. The side wall 32 of the cover plate 30 may abut against or be separated from the corresponding side plate 113, which is not limited in the embodiment of the present utility model. The side walls 32 of the cover plate 30 may also be disposed at one side of the corresponding side plate 113 in the height direction, i.e., a portion of the side walls 32 of the cover plate 30 overlapping the side plate 113 as viewed in the height direction, and the embodiment of the present utility model is not limited. In other embodiments, in the height direction of the key structure 100, edges of the adjacent three side plates 113 may be flush with the top plate 111, the cover plate 30 may include a plurality of side walls 32 extending from the periphery of the top wall 31, and the plurality of side walls 32 of the cover plate 30 are respectively connected with the plurality of side plates 113 of the case body 11 to form the drain chamber 30a surrounded by the case body 11 and the cover plate 30.

The cover plate 30 is also provided with a liquid outlet 30c, and the liquid outlet 30c is communicated with the liquid outlet cavity 30a. In some embodiments, the outer surface 111a of the top plate 111 is disposed obliquely from a side away from the drain port 30c toward a side where the drain port 30c is located, so as to facilitate the drainage of the liquid located in the drain chamber 30a from the drain port 30 c.

Referring to fig. 2 and 3, the cover plate 30 has a first recess 31a formed by recessing inward from a surface of the top wall 31 facing away from the liquid discharge chamber 30a, the case body 11 has a second recess 11a formed by recessing inward from an outer surface 111a of the top plate 111, and the first recess 31a is at least partially accommodated in the second recess 11a. The liquid discharge port 30c is opened in a side wall of the first concave portion 31a, and the liquid discharged from the liquid discharge port 30c can be accommodated in the first concave portion 31 a. In some embodiments, the first recess 31a extends to the sidewall 32 of the cover plate 30 so that the liquid discharged from the liquid discharge port 30c and the first recess 31a can be discharged along the sidewall 32. In other embodiments, the drain port 30c may also be formed on the sidewall 32 of the cover plate 30, which is not limited in the embodiments of the present utility model.

In some embodiments, the first recess 31a of the cover plate 30 is engaged in the second recess 11a of the case body 11 to fix the cover plate 30 to the case 10.

Referring to fig. 2, an outer surface 111a of the top plate 111 of the housing 10 is concavely formed with an engaging groove 111c. One side wall 32 of the cover plate 30 is engaged with the engagement groove 111c to fix the cover plate 30 to the housing 10. In other embodiments, the cover 30 may be further fixed to the housing 10 by a hook, a screw, an adhesive, or the like.

The material of the cover plate 30 may be a metal, such as an aluminum alloy; or a plastic such as AB S plastic or PC plastic, etc. In this embodiment, the material of the cover plate 30 is ABs plastic.

In use, when external liquid (e.g., rainwater) falls on the outer surface of the pressing portion 211 of the key 20 or the cover plate 30, it may enter the sump 21a through a gap between the pressing portion 211 and the sidewall of the mounting hole 30b to be blocked by the barrier 213, achieving the first level of waterproofing. When liquid enters the liquid discharge chamber 30a through the gap between the baffle 213 and the cover plate 30, the liquid is blocked by the first water blocking portion 12 to achieve the second level of water resistance, and the liquid entering the liquid discharge chamber 30a can be rapidly discharged from the liquid discharge port 30c to the outside of the cover plate 30. When the liquid enters the key hole 10b through the gap between the first water blocking part 12 and the first sealing member 22, it is blocked by the second sealing member 23 and the second water blocking part 13 to be accommodated in the accommodation groove 232a, and the third level of water blocking is achieved. When the liquid overflows to the outside of the second seal member 23 through the gap between the second water blocking portion 13 and the accommodation groove 232a, the overflowed liquid is blocked by the second seal member 23 and the main plate 41 which are hermetically connected from entering into the accommodation chamber 40a.

In the key structure 100 provided by the embodiment of the utility model, the first sealing member 22 of the key 20 for contacting or separating with the contact 42 directly seals the key hole 10b, so that waterproofing is realized, namely, the key 20 seals the key hole 10b without arranging an additional sealing structure to seal the key hole 10b, thereby simplifying the overall structure of the key structure 100, facilitating assembly and reducing cost.

In addition, in the key structure 100 of the present utility model, the baffle 213 that is engaged with the cover 30 is provided on the surface of the key 20, the first water blocking portion 12 that is engaged with the first seal 22 is provided on the outer surface of the housing 10, and the second seal 23 and the second water blocking portion 13 are provided on the inner surface of the housing 10, so that multi-stage water resistance is achieved, and the water resistance effect is good.

Referring to fig. 1, a mobile power supply 200 is also provided in an embodiment of the utility model. The key structure 100 is applied to the mobile power supply 200. The portable power source 200 is applied to an outdoor field, and is usually used in combination with a charging base station of a mowing robot to supply power to the mowing robot. Since the portable power source 200 is used outdoors, it is necessary to consider that rainwater is prevented from entering the portable power source 200, and the key structure 100 is usually disposed on top of the portable power source 200 for convenience of operation, so that waterproofing of the key structure 100 is particularly necessary. Specifically, the case body 11 of the key structure 100 serves as a case of the mobile power supply 200, and the key 20 is located on top of the mobile power supply 200.

When rainwater falls on the top of the mobile power supply 200, rainwater entering from the gap between the key 20 and the mounting hole 30b is blocked by the baffle 213 and the first water blocking part 12 in order and cannot enter the mobile power supply 200, so that waterproofing is realized. And the first sealing member 22 and the second sealing member 23 of the key 20 seal the key hole 10b, no additional sealing structure is needed, the whole structure of the mobile power supply 200 is simplified, the assembly is convenient, and the cost is reduced.

In addition, those skilled in the art will recognize that the foregoing embodiments are merely illustrative of the present utility model and are not intended to be limiting, as appropriate modifications and variations of the foregoing embodiments are within the scope of the present disclosure.

Claims (10)

1. The utility model provides a button structure, includes keypad, casing and button, its characterized in that:

the key board is arranged in the shell and comprises a main board and contacts arranged on the surface of the main board;

the shell comprises a shell body and a first water retaining part arranged on the shell body, a key hole is formed in the shell, and the key hole penetrates through the shell body and the first water retaining part;

the key comprises a pressing piece and a first sealing piece, wherein the first sealing piece is abutted with the first water blocking part and seals the key hole, the pressing piece is connected with the first sealing piece, and the first sealing piece is configured to be contacted with the contact when the pressing piece is in a pressing state and separated from the contact when the pressing piece is in a non-pressing state.

2. The key structure of claim 1, wherein the first sealing member includes a sealing body abutting against the first water blocking portion and sealing the key hole, and a triggering portion connected to the sealing body and accommodated in the key hole.

3. The key structure of claim 2, wherein the key further comprises a second sealing member, the second sealing member is connected with the triggering portion and abuts against the main board and is in sealing connection with the main board, a closed accommodating cavity is formed by surrounding the second sealing member, the triggering portion and the main board, and the contact is located in the accommodating cavity.

4. A key structure according to claim 3, wherein said second seal is located between said housing and said key pad and covers said key aperture, and wherein a surface of said second seal facing away from said main plate is recessed to form a receiving channel.

5. The key structure according to claim 4, wherein the housing further comprises a second water blocking portion, the second water blocking portion is disposed on a side of the housing body away from the first water blocking portion and is accommodated in the accommodating groove, and the second water blocking portion abuts against and is in sealing connection with a side wall of the accommodating groove.

6. The key structure of claim 2, wherein the first sealing member further comprises a sealing flange provided at a periphery of the sealing body, the sealing flange abutting against and being sealingly connected with a side wall of the first water blocking portion.

7. The key structure according to any one of claims 1 to 6, further comprising a cover plate provided on a surface of the housing and provided with a mounting hole, the pressing piece being fittingly mounted in the mounting hole.

8. The key structure of claim 7, wherein the pressing member includes a pressing portion and a shoulder portion provided at a periphery of the pressing portion, the pressing portion being accommodated in the mounting hole, the shoulder portion being configured to abut against the cover plate when the pressing member is in a non-pressed state.

9. The key structure of claim 7, wherein the housing and the cover plate define a drain cavity, the cover plate defines a drain port, and the drain port is in communication with the drain cavity.

10. A mobile power supply comprising a key structure according to any one of claims 1-9.