CN216698149U - Key assembly and wearable equipment - Google Patents

Abstract

The utility model provides a key assembly and a wearable device. The key assembly comprises a shell, a sleeve and a key. The casing is provided with a mounting hole, the sleeve is arranged in the mounting hole, at least one exhaust cavity communicated with the outside is formed between the outer wall of the sleeve and the hole wall of the mounting hole, a cavity is defined between the key and the inner wall surface of the sleeve, the wall of the sleeve is provided with an air hole communicated with the exhaust cavity and the cavity, and the air hole is provided with a sand-proof net. The silt-proof key assembly provided by the utility model has an excellent silt-proof effect, can be used in the field with poor water quality and in harsh environments such as silt water and the like, and has good reliability.

Description

Key assembly and wearable equipment

Technical Field

The application relates to the technical field of keys, in particular to a key assembly and wearable equipment.

Background

Along with the market of intelligent wearable equipment is bigger and bigger, the consumer is also more and more diversified to the use scene of product, for example cross country fan and outdoor fan use conventional wearable equipment in harsh environment such as silt water, the button of wearable equipment often brings silt into the inside of button because sand control ability is not enough in the use, along with silt is more and more, finally leads to the functional failure of button, influences user experience.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to solving, at least to some extent, one of the technical problems in the related art. Therefore, the embodiment of the utility model provides a key assembly with a silt prevention function. The embodiment of the utility model also provides wearable equipment with the key assembly.

The key assembly of the embodiment of the utility model comprises: the shell is provided with a mounting hole; the sleeve is arranged in the mounting hole, and at least one exhaust cavity communicated with the outside is formed between the outer wall of the sleeve and the hole wall of the mounting hole; the key is movably arranged in the sleeve along the axial direction of the sleeve, a cavity is defined between the key and the inner wall surface of the sleeve, at least one air hole for communicating the exhaust cavity with the cavity is formed in the wall of the sleeve, and a sand-proof net is arranged at the position of the at least one air hole.

The silt-proof key assembly provided by the embodiment of the utility model is provided with the sleeve, the exhaust cavity communicated with the outside is formed between the sleeve and the shell, the cavity is formed between the sleeve and the key, and the cavity is communicated with the exhaust cavity through the air holes in the sleeve, so that the air pressure balance between the cavity and the outside air is kept, and the key function is realized. In addition, the sand prevention net for preventing silt from entering the cavity is arranged at the air vent, so that the silt can be effectively prevented from entering the cavity, and the use function of the key is guaranteed.

Therefore, the silt-prevention key assembly provided by the embodiment of the utility model has an excellent silt-prevention effect, can be used in the field with poor water quality and in harsh environments such as silt water and the like, and has good reliability.

In some embodiments, the hole wall of the air hole is provided with at least one inwards concave limiting part; the button subassembly still include with the mounting that the sleeve pipe links to each other, the mounting with spacing portion cooperation is in order to with the sand prevention net restriction is in the venthole.

In some embodiments, the mounting hole includes a large diameter wall and a small diameter wall in an axial direction of the sleeve, and a first step surface is provided between the large diameter wall and the small diameter wall; the air exhaust cavity is formed between the side wall of the sleeve and at least part of the large-diameter wall at intervals, and the first step surface is provided with an air vent groove communicated with the air vent and the air exhaust cavity.

In some embodiments, the key comprises a pressing portion and a rod portion extending along an axial direction of the sleeve, the at least one air hole surrounds the rod portion, and the air hole is communicated with each air hole; or the at least one air exhaust cavity surrounds the sleeve, and each air exhaust cavity is communicated with the ventilation groove.

In some embodiments, the bushing further comprises a second step surface abutting the first step surface; the key assembly further comprises a first clamp spring, and the first clamp spring is clamped at the bottom of the sleeve and abuts against the bottom surface of the shell.

In some embodiments, a gap communicating the exhaust cavity with the outside is defined between the tube wall of the sleeve and the large-diameter wall, and the width of the gap is 0.04-0.06 mm.

In some embodiments, a first waterproof ring is arranged between the pipe wall of the sleeve and the small-diameter wall; or a sand-proof ring is arranged between the pressing part of the key and the sleeve, and a second waterproof ring is arranged between the rod part of the key and the sleeve.

In some embodiments, the key assembly further includes a second snap spring, the rod portion of the key assembly extends downward from the bottom end of the sleeve, the second snap spring is clamped at the bottom of the rod portion, and the second snap spring abuts against the bottom end of the sleeve when the key is in the pop-up position.

Another aspect of the present invention provides a wearable device, which includes at least one of a key assembly and an air pressure sensor, where the key assembly is the key assembly according to any one of the foregoing embodiments, the housing is provided with an air pressure measuring hole, and the air pressure sensor is located in the air pressure measuring hole.

In some embodiments, the wearable device further comprises: at least one of a sealing ring, a sand blocking net and a protective cover, wherein the sealing ring is sleeved on the air pressure sensor, the sand blocking net covers the outer side of the air pressure measuring hole, the protective cover is arranged on the outer side of the air pressure measuring hole, at least one part of the protective cover is opposite to the air pressure measuring hole in the axial direction of the air pressure measuring hole, and a gap is reserved between the part of the protective cover and the air pressure measuring hole.

Drawings

Fig. 1 is a schematic structural diagram of a key assembly according to an embodiment of the present invention.

Fig. 2 is a partial schematic view of a key assembly according to an embodiment of the present invention.

Fig. 3 is a bottom view of fig. 2.

Fig. 4 is a top view of the housing.

Fig. 5 is a schematic diagram of a wearable device provided by an embodiment of the utility model.

Fig. 6 is a partial schematic view of a wearable device provided by an embodiment of the utility model.

Reference numerals:

1. a key assembly; 11. a housing; 111. mounting holes; 112. a large diameter wall; 113. a minor-diameter wall; 114. a first step surface; 115. a protrusion; 116. a ventilation groove; 12. a sleeve; 121. a first portion; 122. a second portion; 123. air holes are formed; 124. a sand control net; 125. a limiting part; 126. a fixing member; 13. pressing a key; 131. a pressing part; 132. a main shaft; 14. an exhaust chamber; 15. a cavity; 171. a first clamp spring; 172. a second clamp spring; 18. a gap; 191. a first waterproof ring; 192. a second waterproof ring; 193. a sand prevention ring; 2. a spring; 3. an arrow; 4. wearable device, 5, barometric sensor; 6. a seal ring; 7. a sand blocking net; 8. an air pressure measuring hole; 9. and (6) decorating parts.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the utility model and are not to be construed as limiting the utility model.

A key assembly 1 provided by an embodiment of the present invention is described below with reference to fig. 1 to 4. As shown in fig. 1, the key assembly 1 includes a case 11, a sleeve 12, and keys 13.

The housing 11 is provided with a mounting hole 111, and the sleeve 12 is disposed in the mounting hole 111. For example, the sleeve 12 may be fixedly connected with the housing 11, or the sleeve 12 and the housing 11 may be mutually limited to realize that the relative position is kept fixed. At least one air exhaust cavity 14 communicated with the outside is formed between the outer wall of the sleeve 12 and the hole wall of the mounting hole 111.

The key 13 is movably provided in the sleeve 12 in the axial direction of the sleeve 12. A cavity 15 is defined between the key 13 and the inner wall surface of the sleeve 12, the volume of the cavity 15 changes along with the movement of the key 13, and at least one air hole 123 for communicating the exhaust cavity 14 with the cavity 15 is arranged on the wall of the sleeve 12. The air holes 123 are used for keeping the air pressure balance between the exhaust cavity 14 and the cavity 15, so that the key 13 can realize a pressing function. The air holes 123 are provided with sand control nets 124, and the sand control nets 124 are used for preventing silt from entering the cavity 15. The air holes 123 are matched with the sand control net 124, only allow air to enter the cavity 15, and prevent silt from entering the cavity 15 to influence the use of the key 13.

The silt-proof key assembly provided by the embodiment of the utility model is provided with the sleeve, the exhaust cavity communicated with the outside is formed between the sleeve and the shell, the cavity is formed between the sleeve and the key, and the cavity is communicated with the exhaust cavity through the air holes in the sleeve, so that the air pressure balance between the cavity and the outside air is kept, and the key function is realized. In addition, the sand prevention net for preventing silt from entering the cavity is arranged at the air vent, so that the silt can be effectively prevented from entering the cavity, and the use function of the key is guaranteed.

Therefore, the silt-preventing key assembly provided by the embodiment of the utility model has an excellent silt-preventing effect, can be used in the field with poor water quality and in severe environments such as silt water and the like, and has good reliability.

For convenience of description, the up-down direction is indicated by arrows shown in fig. 1 below, and the mounting hole 111, the sleeve 12, and the key 13 all extend in the up-down direction.

In some embodiments of the present disclosure, the key 13 is movably disposed in the up-down direction between a pressed position and an ejected position, and the pressed position is located below the ejected position, that is, the key 13 is pressed downward so as to be moved from the ejected position to the pressed position. As the key 13 moves downward, the volume of the cavity 15 is gradually reduced, and in order to maintain balance, the gas in the cavity 15 is circulated to the exhaust chamber 14 through the vent holes 123 and then exhausted to the outside through the exhaust chamber 14. In the process that the key 13 moves from the pressing position to the ejecting position, the volume of the cavity 15 is gradually increased, in order to keep the air pressure balance, air enters the cavity 15 from the air holes 123, and the sand prevention net 124 at the air holes 123 prevents sand from entering the cavity 15 along with the air, so that the use of the key 13 is influenced.

In some embodiments of the present disclosure, at least one inwardly recessed limiting portion 125 is disposed on the hole wall of the air hole 123, and the key assembly 1 further includes a fixing member 126 connected to the sleeve 12, where the fixing member 126 cooperates with the limiting portion 125 to limit the sand-proof net 124 in the air hole 123. As shown in fig. 2 and 3, the position-limiting portion 125 abuts against the top end of the sand-proof net 124, and the fixing member 126 abuts against the bottom end of the sand-proof net 124. The sand control net 124 is sandwiched between the limiting portion 125 and the fixing member 126 in the vertical direction.

Optionally, the fixing member 126 and the sleeve 12 are made of metal materials, and the fixing member 126 and the sleeve 12 are welded.

In some embodiments of the present disclosure, the mounting hole 111 includes a large-diameter wall 112 and a small-diameter wall 113 in the axial direction of the sleeve, and a first step surface 114 is provided between the large-diameter wall 112 and the small-diameter wall 113. As shown in fig. 1 and 2, the large diameter wall 112 is located above the small diameter wall 113. Further, the first step surface 114 is a horizontal surface, and the large-diameter wall 112 and the small-diameter wall 113 are both vertical surfaces.

The sleeve 12 includes a first portion 121 located within the mounting hole 111 opposite the large diameter wall 112. The sidewall of the first portion 121 is spaced from at least a portion of the sidewall of the large diameter wall 112 to form the exhaust chamber 14. In some embodiments of the present disclosure, the vent hole 123 is formed at the bottom of the first portion 121, and in order to enable the vent hole 123 to communicate with the exhaust cavity 14, the first step surface 114 is provided with a vent groove 116 communicating with both the vent hole 123 and the exhaust cavity 14.

In some embodiments, the first portion 121 includes a second step surface that is opposite to the first step surface 114 in the up-down direction and abuts against the first step surface 114.

In the embodiment shown in fig. 1, a portion of the first step surface 114 near the inner edge thereof protrudes upward to form a protrusion 115, and the bottom of the fixing member 126 abuts against the protrusion 115. The bottom of the sleeve 12 extends out of the bottom of the mounting hole 111, the key assembly 1 includes a first snap spring 171, and the first snap spring 171 is clamped at the bottom of the sleeve 12 and abuts against the bottom surface of the casing 11.

Specifically, as shown in fig. 1, a portion of the first step surface 114 near the inner edge thereof protrudes upward to form an annular protrusion 115, and an annular ventilation groove 116 is located outside the protrusion 115. The projection 115 abuts against the bottom of the fixing member 126 so that the sleeve 12 is restrained in the downward direction with respect to the housing 11. The sleeve 12 includes a second portion 122 connected to the first portion 121, the second portion 122 being located below the first portion 121 and extending downward. The bottom of the second portion 122 (the bottom of the sleeve 12) extends from the bottom of the mounting hole 111, and the first latch spring 171 is engaged with the portion of the second portion 122 extending out of the mounting hole 111. The first latch spring 171 abuts against the bottom surface of the housing 11 so that the sleeve 12 is retained in an upward direction with respect to the housing 11. Thereby, the relative position of the sleeve 12 and the housing 11 is fixed.

When assembling the key assembly 1, the sleeve 12 may be inserted into the mounting hole 111 from the top down, the protrusion 115 is abutted against the fixing member 126, and then the first clip spring 171 is clipped at the bottom of the sleeve 12, so as to complete the installation of the sleeve 12.

As shown in fig. 3 and 4, in some embodiments of the present disclosure, the vent holes 123 are plural, the plurality of vent holes 123 are arranged at intervals around the key 13, and the vent groove 116 is annular and is communicated with each vent hole 123. That is, a plurality of ventilation holes 123 are arranged at intervals in the circumferential direction around the key 13, and each ventilation hole 123 communicates the exhaust cavity 14 and the cavity 15 through the annular ventilation groove 116. In this embodiment, as shown in fig. 1 and 2, the key 13 includes a pressing portion 131 and a rod portion 132 connected to each other, and the rod portion 132 is connected to the pressing portion 131 and extends downward in the axial direction of the sleeve. A plurality of ventilation holes 123 are provided around the rod part 132. The plurality of air holes 123 are distributed around the rod part 132, which is beneficial to make the air pressure of the cavity 15 and the exhaust cavity 14 uniform, and further improve the air permeation efficiency between the cavity 14 and the exhaust cavity 14. The air holes 123 are communicated with the exhaust cavity 14 through the annular air vent grooves 116, so that the structure can be simplified. As shown in fig. 3, the fixing member 126 is a plate-shaped structure, and a plurality of through holes are formed in the fixing member, and the through holes and the air holes 123 are in one-to-one correspondence in the vertical direction, so as to realize air circulation.

It is understood that in other embodiments, a plurality of ventilation grooves 116 may be provided, and the ventilation grooves 116 and the ventilation holes 123 are in one-to-one correspondence, and respectively communicate with the ventilation holes 123 corresponding thereto. Alternatively, one airing groove 116 is communicated with a plurality of airing holes 123. The present disclosure is not limited.

As shown in fig. 4, in some embodiments of the present disclosure, a sidewall of the first portion 121 is spaced apart from a portion of a sidewall of the large diameter wall 112 to form the exhaust chamber 14. The number of the air exhaust cavities 14 is multiple (three in the figure), the air exhaust cavities 14 are arranged around the sleeve 12 at intervals along the circumferential direction, and each air exhaust cavity 14 is communicated with the ventilation groove 116. It is understood that in other embodiments, the vent chamber 14 may be an annular vent chamber 14.

As shown in FIG. 1, a gap 18 is defined between the wall of the casing 12 and the large diameter wall 112, and the gap 18 is used for communicating the exhaust cavity 14 with the gap 18 outside. Optionally, the gap 18 has a width of 0.01-0.10 mm. Optionally, the width of the gap 18 is 0.04-0.06 mm. Further optionally, the width of the gap 18 is 0.05 mm. The width of the gap 18 is in the range of 0.04-0.06mm, which can prevent most of silt foreign matters with the diameter larger than the width of the gap 18 from entering the ventilation groove 116, even if silt particles with allowable size enter the exhaust cavity 14 through the gap 18, the spinning net in the ventilation holes 123 can prevent the fine particles from entering the cavity 15, thereby ensuring the air pressure balance between the inner cavity 15 of the key 13 and the outside air and effectively preventing the silt from entering the cavity 15 to influence the function of the key 13. The flow path of the air is shown by the arrow 3 in fig. 1.

In some embodiments of the present disclosure, a first waterproof ring 191 is disposed between the second portion 122 of the sleeve 12 and the minor-diameter wall 113. The first waterproof ring 191 serves to prevent external water from entering the inside of the case 11. In the embodiment shown in fig. 1, there are two first waterproof rings 191, and the two first waterproof rings 191 are arranged at intervals in the vertical direction. The outer wall of the second section 122 is provided with a groove for receiving a first flashing 191.

As shown in fig. 1 and 2, at least a portion of the stem portion 132 fits within the second portion 122 of the sleeve 12. The key assembly 1 further includes a spring 2, the spring 2 is sleeved on the rod portion 132 and the top end of the spring 2 pushes the pressing portion 131 upward so as to push the key 13 to the pop-up position. In the eject position, the top of the pressing portion 131 protrudes from the top end of the first portion 121, and the user presses the pressing portion 131 downward to move the key 13 from the eject position to the pressed position, thereby compressing the spring 2. When the user releases the downward pressing force, the spring 2 pushes the pressing portion 131 upward by the elastic force, and the key 13 is returned from the pressed position to the ejected position.

In order to prevent the case from being moved out of the sleeve 12 under the elastic force of the spring 2, in some embodiments of the present disclosure, the key assembly 1 further includes a second snap spring 172, the bottom of the rod portion 132 extends from the bottom end of the sleeve 12, the second snap spring 172 is clamped at the bottom of the rod portion 132, and in the pop-up position, the second snap spring 172 abuts against the bottom end of the sleeve 12, so that the key 13 is limited in the upward direction relative to the sleeve 12, and the key 13 is prevented from being moved out of the sleeve 12 in the upward direction.

In order to prevent silt from entering the cavity 15 through the gap 18 between the key 13 and the sleeve 12, in some embodiments of the present disclosure, a sand-proof ring 193 is disposed between the pressing portion 131 and the sleeve 12. In the embodiment shown in fig. 1, the outer wall surface of the pressing portion 131 is provided with a groove for accommodating the sand prevention ring 193. It will be appreciated that alternatively, the inner wall surface of the sleeve 12 may be provided with a groove for receiving the sand control ring 193, and the disclosure is not limited thereto. The provision of the sand guard 193 prevents silt from entering the cavity 15 through the gap 18 between the key 13 and the sleeve 12.

In order to prevent water from entering the housing 11 through the gap 18 between the key 13 and the sleeve 12, a second waterproof ring 192 is provided between the rod portion 132 and the sleeve 12. In the embodiment shown in fig. 1, the outer wall surface of the rod portion 132 is provided with a groove for accommodating the second waterproof ring 192, and there are two second waterproof rings 192, and the two second waterproof rings 192 are spaced in the vertical direction.

It will be appreciated that the sand guard 193 and the second waterproof ring 192 both move with the push button 13 and rub against the inner wall surface of the sleeve 12.

As shown in fig. 5, an embodiment of the present disclosure further provides a wearable device 4 including the key assembly 1 in any one of the above embodiments. The wearable device 4 of the embodiment of the present disclosure has an excellent sand prevention function, and can be applied to harsh environments such as muddy water. Alternatively, the mounting hole 111 is provided on a side wall of the housing 11.

It should be noted that, in some embodiments, wearable device 4 may be a smart watch, and key assembly 1 may serve as a crown of the smart watch for adjusting a parameter (e.g., time) of the watch. When the intelligent watch is normally used, the key 13 is always located at the pressing position, when the intelligent watch needs to be adjusted, the key 13 is pulled out to enable the key 13 to move to the popping position from the pressing position, the intelligent watch can be adjusted by rotating the key 13 at the popping position, and after the adjustment is finished, the key 13 is pressed to enable the key 13 to return to the pressing position and be kept at the pressing position.

In some embodiments, as shown in fig. 6, wearable device 4 comprises air pressure sensor 5, sealing ring 6, sand screen 7 and protective cover (not shown in the figure).

The shell 11 is provided with an air pressure measuring hole 8, the air pressure sensor 5 is arranged in the air pressure measuring hole 8, the sealing ring 6 is sleeved on the air pressure sensor 5, and in the embodiment shown in fig. 6, the sealing ring 6 is matched in the air pressure measuring hole 5. The air pressure sensor 5 has a waterproof function, and the sealing ring 6 is clamped between the hole wall of the air pressure measuring hole 5 and the air pressure sensor 5 to play a role in preventing water from entering the wearable device 4.

The sand blocking net 7 is positioned outside the air pressure sensor 5 and covers the air pressure measuring hole 8. The outside of baroceptor 5 is that baroceptor 5 is towards the outside one side of wearable equipment 4, hinders sand net 7's effect and prevents that silt from getting into in the atmospheric pressure measuring hole 8, and then get into inside wearable equipment 4. Wearable device 4 still includes decoration 9, and decoration 9 is located the outside of hindering husky net 7, links to each other with hindering husky net 7 through the gum.

The protective cover is arranged at the outer side of the air pressure measuring hole 8, at least one part of the protective cover is opposite to the air pressure measuring hole 8 in the axial direction of the air pressure measuring hole 8, and a space is arranged between the part of the protective cover opposite to the air pressure measuring hole 8 and the air pressure measuring hole.

In some alternative embodiments, the protective cover may have a U-shaped beam structure that spans the air pressure measuring hole 8, the protective cover is disposed on a side wall of the housing 11, two ends of the U-shaped beam are respectively connected to an outer wall surface of the housing 11, a middle portion of the protective cover is opposite to the air pressure measuring hole 8 in an axial direction thereof, and since the protective cover has the U-shaped structure, a space is provided between the middle portion of the protective cover and an outer opening of the air pressure measuring hole 8, and the air pressure measuring hole 8 may be thereby communicated with the outside.

In other alternative embodiments of the present disclosure, the protective cover includes a bottom portion and a sidewall surrounding and connected to the bottom portion, with a space between the bottom portion of the protective cover and the outer opening of the air pressure measuring hole 8. The protective cover is buckled at an opening at the outer side of the air pressure measuring hole 8, a cavity is defined between the protective cover and the outer wall surface of the shell 11, and a communication port is formed in the side wall of the protective cover and is communicated with the cavity and the outside so as to enable the air pressure measuring hole 8 to be communicated with the outside.

Optionally, the seal ring 6 is a D-ring seal ring. The sand blocking net 7 is a steel net.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the utility model and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the utility model.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the present disclosure, the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" and the like mean that a specific feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the terms used above are not necessarily intended to 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. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are exemplary and not to be construed as limiting the present invention, and that changes, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims (10)

1. A key assembly, comprising:

the shell is provided with a mounting hole;

the sleeve is arranged in the mounting hole, and at least one exhaust cavity communicated with the outside is formed between the outer wall of the sleeve and the hole wall of the mounting hole;

the key is movably arranged in the sleeve along the axial direction of the sleeve, a cavity is defined between the key and the inner wall surface of the sleeve, at least one air hole for communicating the exhaust cavity with the cavity is formed in the wall of the sleeve, and a sand-proof net is arranged at the position of the at least one air hole.

2. The key assembly of claim 1, wherein the hole wall of the ventilation hole is provided with at least one inward-recessed limiting portion;

the button subassembly still include with the mounting that the sleeve pipe links to each other, the mounting with spacing portion cooperation is in order to with the sand prevention net restriction is in the venthole.

3. The key assembly according to claim 1, wherein the mounting hole includes a large diameter wall and a small diameter wall in an axial direction of the sleeve, a first step surface being provided between the large diameter wall and the small diameter wall;

the air exhaust cavity is formed between the side wall of the sleeve and at least part of the large-diameter wall at intervals, and the first step surface is provided with an air vent groove communicated with the air vent and the air exhaust cavity.

4. The key assembly of claim 3, wherein the key includes a pressing portion and a rod portion extending in an axial direction of the sleeve, the at least one air hole surrounds the rod portion, and the air hole groove communicates with each air hole; or

The at least one air exhaust cavity surrounds the sleeve, and each air exhaust cavity is communicated with the ventilation groove.

5. The key assembly of any one of claims 3-4, wherein the sleeve further includes a second step surface abutting the first step surface;

the key assembly further comprises a first clamp spring, and the first clamp spring is clamped at the bottom of the sleeve and abuts against the bottom surface of the shell.

6. The key assembly according to any one of claims 3-4, wherein a gap communicating the air venting cavity with the outside is defined between the tube wall of the sleeve and the large-diameter wall, and the width of the gap is 0.04-0.06 mm.

7. The key assembly according to any one of claims 3-4, wherein a first waterproof ring is disposed between the tube wall of the sleeve and the small-diameter wall; or

A sand-proof ring is arranged between the pressing part of the key and the sleeve, and a second waterproof ring is arranged between the rod part of the key and the sleeve.

8. The key assembly according to any one of claims 1 to 4, further comprising a second snap spring, wherein a rod portion of the key assembly extends downward from the bottom end of the sleeve, the second snap spring is clamped at the bottom of the rod portion, and the second snap spring abuts against the bottom end of the sleeve when the key is in the pop-up position.

9. A wearable device comprising at least one of a key assembly and a pneumatic pressure sensor, wherein the key assembly is the key assembly according to any one of claims 1-8, the housing has a pneumatic pressure measuring hole disposed therein, and the pneumatic pressure sensor is located in the pneumatic pressure measuring hole.

10. The wearable device of claim 9, further comprising: at least one of a sealing ring, a sand blocking net and a protective cover, wherein,

the sealing ring is sleeved on the air pressure sensor,

the sand blocking net covers the outer side of the air pressure measuring hole,

the protective cover is arranged on the outer side of the air pressure measuring hole, at least one part of the protective cover is opposite to the air pressure measuring hole in the axial direction of the air pressure measuring hole, and a gap is formed between the part of the protective cover and the air pressure measuring hole.

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