CN214012793U - Key assembly and electronic equipment - Google Patents

Abstract

The application discloses button subassembly and electronic equipment, the button subassembly includes: a circuit board; the guide post is arranged on one side of the circuit board and is spaced from the circuit board; the metal elastic sheet is arranged between the circuit board and the guide post, and can move in the direction close to or far away from the circuit board so as to switch on or switch off the passage of the circuit board; the elastic piece is positioned between the guide post and the metal elastic sheet and is connected with the guide post; the guide post can drive the elastic piece and the metal elastic sheet to move close to or away from the circuit board under the action of external force, so that the metal elastic sheet is switched on or switched off a passage of the circuit board. Through setting up the elastic component on the guide post, can avoid among the correlation technique for guaranteeing electronic equipment's tolerance nature and set up the elastic component on the circuit board or be used for fixed circuit board's support, lead to circuit board or support to occupy great structural space's problem, when guaranteeing tolerance nature, reduce the volume of elastic component, save the structural space who presses the key assembly.

Description

Key assembly and electronic equipment

Technical Field

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

Background

With the continuous development of the 3D curved screen of the mobile phone, the acceptance of the user to the curved screen of the mobile phone is higher and higher, and the 3D curved screen gradually becomes one of the standard configurations of the high-end mobile phone screen. After a consumer purchases a curved-surface screen mobile phone, the consumer may purchase a 3D tempered film through different channels, and the 3D tempered film is assembled and attached to protect the screen.

As shown in fig. 1 and fig. 2, which are currently mainstream side key designs, a metal key cap 10 'and a TPU (Thermoplastic polyurethane elastomer) boss 20' are integrated into a key whole by glue or injection molding. As shown in fig. 2, the FPC (Flexible Printed Circuit Board) assembly 40 ' and the bracket 50 ' are assembled together, and then assembled to the middle frame 30 ' in the order from top to bottom, the power key 70 ' and the volume key 60 ' are externally assembled to the opening of the side of the middle frame 30 ' from left to right, and finally the side key is locked by inserting the blocking piece 80 '. When the side key is pressed externally, the TPU boss 20 'of the side key directly acts on the metal dome of the FPC assembly 40'.

However, the manufacturers that produce 3D tempering membrane on the market are various, and the UV glue that leads to processing production to use exists diversified phenomenon, oozes after tempering membrane UV glue pastes the dress, if flow to the side button region, the UV glue of individuality kind, through the gap infiltration of side button, direct flexible glue TPU boss 20 'to the side button can produce the corruption, leads to the button to feel the variation, influences user's experience, becomes a current pain point.

In order to solve the above problems, a design scheme of a side key is proposed in the related art. As shown in fig. 3, the main difference from the above-mentioned solution is that a circular metal guide post 90 ' is added in the middle, and when the side key is pressed externally, the external force is firstly transmitted to the metal guide post 90 ', and then acts on the metal dome of the FPC assembly 40 '. As shown in FIG. 4, a circular silicone ring 100 'is sleeved in the middle of the metal guide post 90' to play a role in sealing and waterproofing.

However, the shape of the metal guide post 90' is relatively single due to the influence of the processability; meanwhile, in order to ensure the tolerance and avoid the direct hard contact between the metal guide post 90 'and the key dome, a TPU part needs to be added on the bracket 50' or the FPC assembly 40 ', and the TPU needs to be assembled with the bracket 50' or the FPC assembly 40 ', so that the FPC assembly 40' needs a larger structural space.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application aims to provide a key assembly and an electronic device, and the problem that the key assembly of the electronic device in the related art occupies a large structural space can be solved.

In order to solve the above problems, the present application is implemented as follows:

in a first aspect, an embodiment of the present application provides a key assembly, including:

a circuit board;

the guide post is arranged on one side of the circuit board and is spaced from the circuit board;

the metal elastic sheet is arranged between the circuit board and the guide post, and can move in the direction close to or far away from the circuit board so as to switch on or switch off the passage of the circuit board;

the elastic piece is positioned between the guide post and the metal elastic sheet and is connected with the guide post;

the guide post can drive the elastic piece and the metal elastic sheet to move close to or away from the circuit board under the action of external force, so that the metal elastic sheet is switched on or switched off a passage of the circuit board.

In a second aspect, embodiments of the present application further provide an electronic device including the key assembly according to the first aspect.

In the embodiment of the present application, the key assembly includes a circuit board, a guide post, a metal dome, and an elastic member, and particularly, the guide post is disposed at one side of the circuit board and spaced apart from the circuit board, that is, the guide post is not in direct contact with the circuit board. The metal elastic sheet is arranged between the circuit board and the guide post and can move towards the direction close to or far away from the circuit board so as to enable the passage of the circuit board to be in a conducting state or in a disconnecting state. The elastic component is located between guide post and the metal shrapnel, and the elastic component links to each other with the guide post, can understand, the guide post is provided with the elastic component in one side towards the circuit board, thereby under the effect of external force, the guide post can drive the elastic component motion, concretely, when the guide post drives the elastic component to the side motion of being close to the circuit board, the elastic component is through touching metal shrapnel, in order to transmit external force for metal shrapnel, make metal shrapnel can take place deformation, can understand, be provided with at least one contact on the metal shrapnel, after metal shrapnel takes place deformation, at least one contact can contact with the route of conducting circuit board with partial circuit on the circuit board, when external force disappears, metal shrapnel can produce the power of a resilience, thereby can drive elastic component and guide post and resume the normal position, in order to realize the process of pressing of button. Through setting up the elastic component, because the elastic component has certain elastic force, play the effect of buffering at the in-process with the metal shrapnel contact to can avoid directly acting on the metal shrapnel and the wearing and tearing problem that causes with the guide post, on the long-term basis of using key assembly of user, guarantee pressing of button and feel, the extension is pressed key assembly's life, can also guarantee key assembly's tolerance nature. In addition, the elastic piece has certain elastic force, namely provides certain resilience force in the process that the guide post returns to the original position, so that the guide post is further driven to return to the original position, and the operation hand feeling of a user is improved.

Further, the embodiment of this application sets up the elastic component on the guide post, can avoid among the correlation technique for guaranteeing electronic equipment's tolerance nature and set up the elastic component on the circuit board or be used for fixed circuit board's support, lead to circuit board or support to occupy the problem of great structural space, that is to say, through setting up the elastic component on the guide post, can be on the basis of guaranteeing electronic equipment tolerance nature, reduce the volume of elastic component, and then can effectively save the structural space who presses the key assembly, and then improve electronic equipment's space utilization.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the description of the embodiments of the present application will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 shows one of the structural diagrams of a side key in the related art;

FIG. 2 is a second schematic diagram of a side key in the related art;

fig. 3 is a third schematic view showing a structure of a side key in the related art;

fig. 4 is a schematic view showing a structure of a metal guide pillar in the related art;

fig. 5 shows a schematic structural diagram of a key assembly of an embodiment of the present application;

FIG. 6 shows a schematic structural view of a guide post of an embodiment of the present application;

fig. 7 illustrates a cross-sectional view of a key assembly of an embodiment of the present application.

Wherein, the correspondence between the reference numbers and the part names in fig. 1 to 4 is:

10 'metal keycap, 20' TPU boss, 30 'middle frame, 40' FPC component, 50 'bracket, 60' volume key, 70 'power key, 80' baffle, 90 'metal guide post and 100' silica gel ring;

the correspondence between reference numerals and part names in fig. 5 to 7 is:

100 key assemblies, 110 guide columns, 120 metal elastic sheets, 130 elastic pieces, 131 bulges, 140 bulges, 150 grooves, 160 sealing pieces, 170 sealing grooves, 180 key caps and 210 shells.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application are capable of operation in sequences other than those illustrated or described herein.

The electronic device provided in the embodiment of the present application is mainly used for electronic devices, and the electronic devices include, but are not limited to, electronic devices such as a mobile phone, a tablet computer, a laptop computer, a mobile computer, a handheld game console, and the like. Of course, the present invention is not limited to the electronic device, and may be applied to other devices requiring keys.

The key assembly 100 and the electronic device according to the embodiment of the present application will be further described with reference to the drawings.

Fig. 5 illustrates an exploded view of key assembly 100 of one embodiment of the present application. Fig. 6 illustrates a partially exploded view of key assembly 100 of the embodiment shown in fig. 5. Fig. 7 illustrates a cross-sectional view of key assembly 100 of one embodiment of the present application.

As shown in fig. 5 to fig. 7, a key assembly 100 according to an embodiment of the present application is used in an electronic device, where the key assembly 100 includes: a circuit board; the guide post 110, the guide post 110 is set up on one side of the circuit board and spaced apart from circuit board; the metal elastic sheet 120 is arranged between the circuit board and the guide post 110, and the metal elastic sheet 120 can move in a direction close to or far away from the circuit board so as to switch on or switch off the circuit board; the elastic piece 130, the elastic piece 130 is located between the guide post 110 and the metal shrapnel 120, the elastic piece 130 is connected with the guide post 110; the guiding column 110 can drive the elastic element 130 and the metal spring 120 to move close to or away from the circuit board under the action of an external force, so that the metal spring 120 can turn on or off the circuit board.

In the embodiment of the present application, key assembly 100 includes a circuit board, a guide post 110, a metal dome 120, and an elastic member 130, specifically, guide post 110 is disposed at one side of the circuit board, and guide post 110 is spaced apart from the circuit board, that is, guide post 110 is not in direct contact with the circuit board. The metal dome 120 is disposed between the circuit board and the guiding post 110, and the metal dome 120 can move toward or away from the circuit board, so that the circuit board is in a conducting state or in a disconnecting state. The elastic member 130 is located between the guide post 110 and the metal dome 120, and the elastic member 130 is connected to the guide post 110, it can be understood that the guide post 110 is provided with the elastic member 130 at a side facing the circuit board, so that the guide post 110 can drive the elastic member 130 to move under the action of an external force, specifically, when the guide post 110 drives the elastic member 130 to move to a side close to the circuit board, the elastic member 130 touches the metal dome 120 to transmit the external force to the metal dome 120, so that the metal dome 120 can deform, it can be understood that the metal dome 120 is provided with at least one contact, when the metal dome 120 deforms, the at least one contact can contact with a part of circuits on the circuit board to conduct a path of the circuit board, and when the external force disappears, the metal dome 120 can generate a resilient force, so as to drive the elastic member 130 and the guide post 110 to recover to the original position, to implement the pressing process of the key. Through setting up elastic component 130, because elastic component 130 has certain elastic force, play the effect of buffering with the in-process of metal shrapnel 120 contact to can avoid directly being used for the guide post 110 on metal shrapnel 120 and the wearing and tearing problem that causes, on the long-term basis of using key assembly 100 of user, guarantee pressing of button and feel, the life of extension key assembly 100 can also guarantee the tolerance nature of key assembly 100. In addition, the elastic member 130 has a certain elastic force, that is, provides a certain resilience force during the process of returning the guide post 110 to the original position, and further drives the guide post 110 to return to the original position, thereby improving the operation feel of the user.

Further, the elastic member 130 is arranged on the guide post 110 in the embodiment of the application, so that the problem that the circuit board or the support occupies a large structural space due to the fact that the elastic member 130 is arranged on the circuit board or the support for fixing the circuit board for ensuring the tolerance of the electronic device in the related art can be avoided, that is, the elastic member 130 is arranged on the guide post 110, the size of the elastic member 130 can be reduced on the basis of ensuring the tolerance of the electronic device, the structural space of the key assembly 100 can be effectively saved, and the space utilization rate of the electronic device is improved.

In specific application, metal shrapnel 120 sets up on the circuit board, and the circuit board can be the flexible circuit board to can guarantee the effective cooperation of metal shrapnel 120 and circuit board, it can be understood that electronic equipment includes the main control board, and the main control board is connected with the circuit board electricity, thereby when the circuit board switches on the route, the main control board can correspond the demonstration or other control function of page according to the operation control of button subassembly 100.

It should be noted that, the elastic member 130 can be made of TPU material, which is thermoplastic polyurethane elastomer rubber and has good elasticity, so that the resilience of the guide post 110 can be improved on the basis of ensuring the tolerance of the device, and the operation hand feeling of the user can be improved.

In a specific application, the guiding column 110 may be made of a hard plastic guiding column 110, that is, the guiding column 110 is made of a hard plastic material with PC + 20% GF, and the guiding column 110 and the elastic member 130 are integrated by a two-material injection molding method, so that the connection strength between the guiding column 110 and the elastic member 130 can be effectively ensured, and the service life of the key assembly 100 is further prolonged. In addition, the guide post 110 and the elastic member 130 are combined by a two-material injection molding method, so that mass production can be performed, and the production cost of the key assembly 100 is reduced.

In some embodiments, as shown in fig. 6, the elastic member 130 includes a protrusion 131, and the protrusion 131 protrudes toward a side where the circuit board is located.

In these embodiments, it is defined that the elastic element 130 includes a protruding portion 131, and the protruding portion 131 is disposed to protrude toward a side where the circuit board is located, that is, when the guiding post 110 drives the elastic element 130 to move toward or away from the side where the circuit board is located, the protruding portion 131 of the elastic element 130 can contact with the metal dome 120 to conduct a circuit board. Through setting up bellying 131 and metal shrapnel 120 contact, can reduce the area of contact of elastic component 130 and metal shrapnel 120, on the basis of guaranteeing effective external force transmission, reduce the wearing and tearing problem that elastic component 130 and metal shrapnel 120 arouse, further prolong button assembly 100's life, when the user used electronic equipment for a long time, still keep better pressing to feel.

In a specific application, the protruding portion 131 may be integrally formed with the elastic member 130, so as to ensure the connection strength between the protruding portion 131 and the elastic member 130, and further prolong the service life of the key assembly 100.

In some embodiments, as shown in fig. 6, key assembly 100 further includes at least one protrusion 140 and at least one groove 150, where at least one protrusion 140 is disposed on a side of guide post 110 facing elastic member 130, at least one groove 150 is disposed on a side of elastic member 130 facing guide post 110, and protrusion 140 is matched with groove 150.

In these embodiments, key assembly 100 further includes at least one protrusion 140 and at least one groove 150, and specifically, at least one protrusion 140 is disposed on a side of guide post 110 facing elastic member 130, and at least one groove 150 is disposed on a side of elastic member 130 facing guide post 110, wherein protrusion 140 is fitted into groove 150, that is, protrusion 140 can be inserted into groove 150. Through the arrangement of the plurality of protrusions 140 and the plurality of grooves 150, the bonding force between the guide post 110 and the elastic member 130 can be effectively improved, the connection strength between the guide post 110 and the elastic member 130 is further ensured, and the reliability of the key assembly 100 is improved.

It should be noted that, the number of the convex portions 140 and the number of the concave grooves 150 may be set according to actual requirements, and it can be understood that the number of the convex portions 140 and the concave grooves 150 is not easy to be too large, which increases the manufacturing cost of the injection mold too much and is not beneficial to mass production.

In one specific embodiment, the plurality of protrusions 140 are integral with the guide post 110.

In these embodiments, the protruding portion 140 and the guiding post 110 are an integral structure, and the integral structure has good mechanical properties, so as to effectively ensure the connection strength between the protruding portion 140 and the guiding post 110, further ensure the bonding force between the guiding post 110 and the elastic member 130, and prolong the service life of the key assembly 100. In addition, the integral structure facilitates mass production of the guide posts 110, thereby reducing the production cost of the key assembly 100.

In another specific embodiment, the groove 150 is integrally formed with the elastic member 130.

In these embodiments, the groove 150 and the elastic member 130 are integrated into a whole, and the integrated structure has good mechanical properties, so that the structural strength of the elastic member 130 can be effectively ensured, the bonding force between the guide post 110 and the elastic member 130 can be further ensured, and the service life of the key assembly 100 can be prolonged. In addition, the integral structure facilitates mass production of the elastic member 130, thereby reducing the production cost of the key assembly 100.

In one particular embodiment, the guide post 110 has an elliptical cross-sectional shape.

In these embodiments, the guide post 110 is defined to have an elliptical cross-sectional shape, thereby ensuring the structural strength of the guide post 110.

In some embodiments, as shown in fig. 6 and 7, the electronic device further includes a housing 210, and the key assembly 100 further includes: the seal 160 is provided on the guide post 110, and a part of the seal 160 abuts against one side surface of the housing 210 facing the guide post 110.

In these embodiments, it is limited that the key assembly 100 further includes the sealing member 160 disposed on the guide post 110, specifically, a portion of the sealing member 160 abuts against a side surface of the casing 210 of the electronic device facing the guide post 110, that is, when the guide post 110 is mounted to the casing 210 of the electronic device, by disposing a portion of the sealing member 160 abutting against a side wall of the casing 210, a seal can be formed between the key assembly 100 and the casing 210, and further, corrosion of UV glue or the like on the elastic member 130 after entering from a gap between the key assembly 100 and the casing 210 can be effectively prevented, which leads to a problem of poor hand feeling of the key, thereby ensuring a sealed environment inside the electronic device, taking account of tolerance and stability of the key, improving quality expression of the product, and saving a structural space.

In a specific application, the sealing member 160 may be made of a silicone material, so as to ensure the sealing effect of the sealing member 160.

In some embodiments, as shown in fig. 6 and 7, key assembly 100 further includes a sealing groove 170, wherein sealing groove 170 is disposed in guide post 110, at least a portion of seal 160 is located in sealing groove 170, and sealing groove 170 extends along a circumferential direction of guide post 110.

In these embodiments, key assembly 100 is further defined to include a sealing groove 170, and specifically, a sealing groove 170 is disposed on guide post 110, and at least a portion of sealing member 160 is located in sealing groove 170, so as to further improve the sealing effect between key assembly 100 and casing 210 of the electronic device. In addition, by arranging the sealing groove 170, the sealing element 160 can be limited, effective sealing of the sealing element 160 is further ensured, and the sealing environment inside the electronic device is improved.

In a specific application, it can be understood that the depth of the sealing groove 170 is not too deep, and if the groove is too deep, on one hand, the structural strength of the guide post 110 is reduced, and the service life of the key assembly 100 is reduced; on the other hand, to ensure the sealing between the sealing member 160 and the housing 210, the sealing member 160 is thicker, so as to ensure the interference fit between the sealing member 160 and the housing 210 on the basis that the sealing groove 170 limits the sealing member 160, which results in the increase of the manufacturing cost of the sealing member 160. In addition, the depth of the sealing groove 170 is not too shallow, and if the depth is too shallow, the effect of the sealing groove 170 on limiting the sealing member 160 cannot be ensured. Therefore, the groove depth of the sealing groove 170 needs to be designed reasonably to ensure the structural strength of the guide post 110 while ensuring effective limit of the sealing element 160.

In a specific embodiment, the seal groove 170 is penetratingly disposed in a circumferential direction of the guide post 110.

In the embodiments, the sealing groove 170 is defined to penetrate through the guide column 110 in the circumferential direction, so that on one hand, the machining of the sealing groove 170 can be facilitated, and the machining difficulty of the sealing groove 170 can be reduced; on the other hand, the limit effect of the sealing groove 170 on the sealing member 160 can be further ensured.

In a specific embodiment, the guide posts are arranged at intervals, the elastic parts are arranged in a one-to-one correspondence with the guide posts, and each elastic part is connected with the corresponding guide post.

In these embodiments, the number of the guide posts 110 is limited to be plural, and the elastic members 130 are disposed in one-to-one correspondence with the guide posts 110, that is, each guide post 110 is disposed with an elastic member 130 on a side facing the circuit board, so that under an external force, the guide post 110 can drive the elastic member 130 to move, when the guide post 110 drives the elastic member 130 to move to a side close to the circuit board, the elastic member 130 touches the metal spring 120 to transmit the external force to the metal spring 120, so that the metal spring 120 can deform, the metal spring 120 is disposed with at least one contact, when the metal spring 120 deforms, the at least one contact can contact with a part of the circuit on the circuit board to conduct the circuit of the circuit board, and when the external force disappears, the metal spring 120 can generate a resilient force, so as to drive the elastic member 130 and the guide posts 110 to return to the original positions, to implement the pressing process of the key. By arranging the guide posts 110 and the elastic pieces 130 in one-to-one correspondence, the pressing operation of various functions of the electronic equipment can be realized, the key forms of the electronic equipment are enriched, and for example, the electronic equipment can be provided with a volume key and a power key.

In some embodiments, the key assembly 100 further includes a key cap 180, and the key cap 180 is disposed at an end of the guide post 110 away from the elastic member 130.

In these embodiments, the key assembly 100 further includes a key cap 180, and specifically, the key cap 180, that is, a volume key or a power key, is disposed at an end of the guide post 110 away from the elastic member 130, so that when a user presses the key cap 180, the key cap 180 can drive the guide post 110 to move toward a side close to or away from the circuit board, and further the guide post 110 can drive the elastic member 130 to move, so that the metal dome 120 can turn on or off a path of the circuit board.

In some embodiments, the guide post 110 is a plastic guide post 110; and/or the elastic member 130 is a plastic elastic member 130.

In these embodiments, the guiding pillars 110 are limited to be plastic guiding pillars 110, and specifically, the guiding pillars 110 have a certain hardness, so as to improve the reliability of the key assembly 100 on the basis of ensuring the pressing feel of the user. The elastic member 130 is a plastic elastic member 130, specifically a soft plastic material with certain elasticity, so that tolerance and stability of the key assembly 100 can be considered, the quality expression of the product is improved, and the structural space is saved.

The electronic device provided in this embodiment has the key assembly 100 according to any of the above embodiments, and further has the beneficial effects of the key assembly 100 according to any of the above embodiments, which are not described in detail herein.

Further, the electronic device includes a housing 210 and a main control board, where the main control board is used to control a corresponding page to display or perform other control functions according to a pressing operation of a user when the circuit board is connected to the circuit.

It should be noted that in the description of the present specification, reference to the description of the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples", etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, the schematic representations of the terms used above 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.

In this application, the terms "first," "second," and "third" 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 limited otherwise. In this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

While the present embodiments have been described with reference to the accompanying drawings, it is to be understood that the invention is not limited to the precise embodiments described above, which are meant to be illustrative and not restrictive, and that various changes may be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (10)

1. A key assembly for an electronic device, the key assembly comprising:

a circuit board;

a guide post disposed at one side of the circuit board and spaced apart from the circuit board;

the metal elastic sheet is arranged between the circuit board and the guide post, and can move in the direction close to or far away from the circuit board so as to switch on or switch off the passage of the circuit board;

the elastic piece is positioned between the guide post and the metal elastic sheet and is connected with the guide post;

the guide post can drive the elastic piece and the metal elastic piece to move close to or away from the circuit board under the action of external force, so that the metal elastic piece is switched on or switched off a passage of the circuit board.

2. The key assembly of claim 1, wherein the elastic member comprises:

the protruding part protrudes towards one side where the circuit board is located.

3. The key assembly of claim 1, further comprising:

at least one convex part arranged on one side of the guide post facing the elastic part;

at least one groove is formed in one side, facing the guide column, of the elastic piece, and the convex portion is matched with the groove.

4. The key assembly of claim 3,

the plurality of convex parts and the guide post are of an integral structure; and/or

The groove and the elastic piece are of an integral structure.

5. The key assembly according to any one of claims 1 through 4,

the cross section of the guide post is elliptical.

6. The key assembly of any one of claims 1-4, the electronic device further comprising a housing, wherein the key assembly further comprises:

and the sealing element is arranged on the guide post, and one part of the sealing element is abutted against one side surface of the shell facing the guide post.

7. The key assembly of claim 6, further comprising:

a sealing groove disposed in the guide post, at least a portion of the sealing element being located in the sealing groove,

the seal groove extends in the circumferential direction of the guide post.

8. The key assembly according to any one of claims 1 through 4,

the guide post is a plurality of that the interval set up, the elastic component be with a plurality of the guide post one-to-one sets up, every the elastic component with correspond the guide post links to each other.

9. The key assembly according to any one of claims 1 through 4,

the guide post is a plastic guide post; and/or

The elastic part is a plastic elastic part.

10. An electronic device, characterized in that it comprises a key assembly according to any one of claims 1 to 9.

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