CN212434514U - Button assembly and hair-dryer - Google Patents

Abstract

The application discloses button assembly and hair-dryer, this button assembly includes: the supporting piece is arranged inside the handle and provided with a first connecting structure, and a second connecting structure matched with the first connecting structure is arranged inside the handle; the button is arranged on the support piece and is provided with a clamping structure for preventing the button from being separated from the support piece; wherein, after support piece passed through the cooperation joint between first connection structure and the second connection structure to the handle, and the button passes through the screens structure joint to support piece, there is the reserve clearance between button and the support piece and between button and the handle lateral wall, and the reserve clearance is configured to prevent that the button from blocking in the axial direction of pressing of perpendicular to handle. Through the mode, the button assembly has good centering performance and is not prone to being stuck.

Description

Button assembly and hair-dryer

Technical Field

The application relates to the technical field of household appliances, in particular to a button assembly and a blower.

Background

The hair dryer is a small household appliance frequently used in daily life of people, and plays a drying role by generating wind with a specific temperature. The handle of the hair drier is provided with a button to realize the switching of different working modes. The buttons of existing hair dryers on the market often have the problem of jamming after a period of use. Therefore, it is necessary to develop a button assembly and a hair dryer.

SUMMERY OF THE UTILITY MODEL

To the shortcomings in the technology, the button assembly and the hair dryer have the advantages of being good in centering performance and not prone to being stuck.

In order to solve the technical problem, the technical scheme adopted by the application is as follows:

a button assembly for use with a handle of a hair dryer, comprising: the supporting piece is arranged inside the handle and provided with a first connecting structure, and a second connecting structure matched with the first connecting structure is arranged inside the handle; the button is arranged on the supporting piece and is provided with a clamping structure for preventing the button from being separated from the supporting piece; wherein support piece passes through first connection structure with cooperation joint between the second connection structure is received the handle, just the button passes through clamping structure joint extremely behind the support piece, the button with between the support piece and the button with there is the reserve clearance between the handle lateral wall, the reserve clearance is configured to prevent the button is perpendicular to the dead in the axial direction of pressing of handle card.

Preferably, the first connecting structure includes a first axial position-retaining structure and a first circumferential positioning structure, and the second connecting structure includes a second axial position-retaining structure matched with the first axial position-retaining structure and a second circumferential positioning structure matched with the first circumferential positioning structure; the first axial clamping structure and the second axial clamping structure are matched to realize axial positioning and connection of the supporting piece and the handle; the cooperation between the first and second circumferentially-located structures enables circumferential positioning of the support and the handle.

Preferably, the first axial positioning structure comprises a first clamping shoulder and a second clamping shoulder which are formed on the outer circumferential wall of the supporting member, wherein the first clamping shoulder is arranged close to the button, and the second clamping shoulder is arranged far away from the button; the second axial clamping structure comprises a mounting hole formed in the handle, a hole shoulder formed on the hole wall of the mounting hole and clamped with the first clamping shoulder, and a clamping hook clamped with the second clamping shoulder, wherein the hole shoulder and the clamping hook are respectively positioned at two opposite end parts of the mounting hole.

Preferably, the first circumferential positioning structure is a bump formed at the first clip shoulder and growing along the radial direction of the first clip shoulder; the second circumferential positioning structure is a groove formed at the edge of the mounting hole.

Preferably, the button comprises a pressing block exposed on the outer side wall of the handle; the clamping structure comprises at least one connecting leg arranged on the pressing block and a button buckle formed at the end part of the connecting leg; the connecting legs are arranged on the inner end face of the pressing block and distributed along the pressing direction of the button.

Preferably, the supporting piece is hollow inside and has two openings at two ends to form a cavity penetrating through the supporting piece, and a partition plate which is perpendicular to the axial direction of the supporting piece and is clamped with the button buckle is formed in the cavity; wherein, be provided with on the baffle and supply the logical draw-in groove that the connecting leg wore to establish.

Preferably, a button hole for accommodating the pressing block is formed in the outer side wall of the handle, and a reserved gap between the button and the outer side wall of the handle is an annular appearance gap X2 between the outer circumferential wall of the pressing block and the hole wall of the button hole.

Preferably, the reserved gap between the button and the support is an annular mounting gap X1 between the connecting leg and the cavity wall of the support.

Preferably, the pressing block comprises a base body formed with a cover groove and a light-isolating type key cover fastened in the cover groove, wherein the pressing block base body is made of a light-transmitting material so as to form an annular light strip in the circumferential direction of the key cover.

In order to solve the above technical problem, another technical solution adopted by the present application is:

a hair dryer comprising a button assembly as described above.

Compared with the prior art, the application has the beneficial effects that: the application provides a button assembly and hair-dryer, its button passes through support piece and sets up in the handle, and exists between button and the support piece and between button and the handle lateral wall and reserve the clearance, and from this, button and support piece have better centering nature to ensure that the difficult card of button is dead.

Drawings

FIG. 1 is a schematic view of the structure of the handle of the present application;

FIG. 2 is an exploded schematic view of the handle of the present application;

FIG. 3 is a schematic cross-sectional view of a handle of the present application;

FIG. 4 is an enlarged schematic view of region C of FIG. 3;

FIG. 5 is a front view of the handle inner frame of the present application;

FIG. 6 is a structural schematic view of the handle inner frame in the rear view direction of the present application;

FIG. 7 is an enlarged schematic view of region B in FIG. 6;

FIG. 8 is a schematic view of the handle inner frame and support member of the present application after installation;

FIG. 9 is an exploded view of a portion of the electrical control panel of the present application;

FIG. 10 is an exploded schematic view of a push button assembly of the present application;

FIG. 11 is a schematic view of the structure of the slider of the present application;

fig. 12 is a schematic view of the positional relationship between the first stopper and the second stopper in the present application;

FIG. 13 is a schematic cross-sectional view between the handle inner frame and the slider in the present application;

FIG. 14 is an enlarged schematic view of region A of FIG. 13;

FIG. 15 is a schematic cross-sectional view of FIG. 9;

FIG. 16 is an exploded view of the button assembly of the present application in a bottom view;

fig. 17 is an exploded schematic view in a top view of the button assembly of the present application.

Detailed Description

The present application will now be described in further detail with reference to the accompanying drawings, whereby one skilled in the art can, with reference to the description, make an implementation. If in the embodiments of the present application there is a description referring to "first", "second", etc., the description of "first", "second", etc. is for descriptive purposes only and is 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 such feature.

In the description of the present application, it is also to be noted that, unless otherwise specified or limited more specifically, the terms "disposed" and "connected" are to be construed broadly, and for example, "connected" may be a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present disclosure can be understood in specific instances by those of ordinary skill in the art.

In addition, if the meaning of "and/or" appears in the application, three parallel schemes are included, and the example of "A and/or B" includes the scheme A, the scheme B or the scheme A and the scheme B which are satisfied simultaneously. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present application.

The hair dryer is a small household appliance frequently used in daily life of people, and plays a drying role by generating wind with a specific temperature. The handle of the hair dryer on the market is usually provided with a control button, and the different working modes of the hair dryer can be switched by pressing the control button. The blower needs to press the button frequently to change the working mode during the working process according to the change of the requirements of the user. The button is easy to be stuck when being pressed for a plurality of times discontinuously for a long time.

In view of the above, the present application provides a button assembly, please refer to fig. 1 to 17, which is applied to a handle 100 of a hair dryer for switching air temperature of the hair dryer, and comprises: the supporting member 600 is disposed inside the handle 100, the supporting member 600 is provided with a first connecting structure 610, and the handle 100 is provided with a second connecting structure 130 matching with the first connecting structure 610; and a button 500 disposed on the support 600, the button 500 having a detent structure 510 for preventing the button from being separated from the support 600; wherein, after the support 600 is snapped to the handle 100 by the engagement between the first connection structure 610 and the second connection structure 130 and the button 500 is snapped to the support 600 by the snapping structure, a reserved gap exists between the button 500 and the support 600 and between the button 500 and the outer sidewall of the handle 100, and the reserved gap is configured to prevent the button 500 from being jammed in a pressing direction perpendicular to the axial direction of the handle 100.

Through the above manner, the button 500 in the present application is disposed on the handle 100 through the support 600, and a reserved gap exists between the button 500 and the support 600 and between the button 500 and the outer sidewall of the handle 100, so that the button 500 and the support 600 have good alignment, thereby ensuring that the button 500 is not easily jammed.

In the present embodiment, the handle 100 includes a handle outer case 110 and a handle inner frame 120; the handle housing 110 is hollow along the axial direction to form a receiving cavity, and the handle inner frame 120 is detachably disposed in the receiving cavity and supports the electric control board. The electric control board is provided with an adjusting switch 200 and a push switch 800, and the push switch 800 is triggered by pressing a button 500 of the button assembly, so that the air temperature of the hair dryer is adjusted.

Further, referring to fig. 17, the first connecting structure 610 includes a first axial positioning structure 611 and a first circumferential positioning structure 612; referring to fig. 7, the second connecting structure 130 is disposed on the handle inner frame 120, and includes a second axial positioning structure 131 engaged with the first axial positioning structure 611 and a second circumferential positioning structure 132 engaged with the first circumferential positioning structure 612; the first axial retaining structure 611 and the second axial retaining structure 131 are engaged to axially position and connect the support 600 and the handle 100; the cooperation between the first and second circumferential locating structures 612, 132 enables circumferential positioning of the support 600 with the handle 100. In this way, the support 600 can be effectively mounted on the handle 100, and the connection is stable and reliable.

Specifically, the first axial detent structure 611 includes a first detent shoulder 6111 and a second detent shoulder 6112 formed on the outer circumferential wall of the support 600, wherein the first detent shoulder 6111 is disposed close to the button 500, and the second detent shoulder 6112 is disposed far from the button 500. The second axial locking structure 131 includes a mounting hole 1311 formed in the handle inner frame 120, a hole shoulder 1312 formed on a hole wall of the mounting hole 1311 and engaged with the first locking shoulder 6111, and a locking hook 1313 engaged with the second locking shoulder 6112, wherein the hole shoulder 1312 and the locking hook 1313 are respectively located at two opposite ends of the mounting hole 1311. Referring to fig. 17, in order to facilitate the engagement between the hook 1313 and the second shoulder 6112, the guide slot 6113 is axially disposed on the outer circumferential wall of the supporting member 600, that is, the guide slot 6113 is disposed along the direction from the first shoulder 6111 to the second shoulder 6112, the first end of the guide slot 6113 is formed with a leading-in port on the first shoulder 6111, and the tail end of the guide slot 6113 is spaced from the second shoulder 6112. By providing the guide slot 6113, the hook 1313 can pass over the first shoulder 6111 and then be engaged with the second shoulder 6112.

In this embodiment, for convenience of positioning, the first circumferential positioning structure 612 is configured as a bump formed at the first shoulder 6111 and growing along the radial direction thereof; the second circumferential locating feature 132 is provided as a groove formed at the edge of the mounting hole 1311. During installation, the circumferential positioning can be completed only by aligning the convex blocks with the grooves, and the positioning device has the advantages of simple structure, convenience in alignment and convenience in installation.

Further, referring to fig. 16 and 17, the button 500 further includes a pressing block 520 connected with a locking structure 510 and exposed on the outer side wall of the handle 100, and a rib 530 for pressing and triggering the push switch 800 is disposed at the center of the inner end surface of the pressing block 520. The locking structure 510 includes at least one connecting leg 511 disposed on the pressing block 520, and a button fastener 512 formed at an end of the connecting leg 511, wherein the connecting leg 511 is disposed on an inner end surface of the pressing block 520 and distributed along a pressing direction of the button 500, and the pressing block 520 and the button fastener 512 are respectively disposed on two opposite sides of the connecting leg 511. The supporting member 600 is hollow inside and has two openings at two ends to form a cavity penetrating through the supporting member, a partition 620 is formed in the cavity and perpendicular to the axial direction of the cavity, a through slot 621 for the connecting leg 511 to penetrate is formed in the partition 620, and after the connecting leg 511 penetrates through the through slot 621, the button buckle 512 of the clamping structure 510 is clamped with the partition 620, so that the connection between the button 500 and the supporting member 600 is realized; the partition 620 is further provided with a through hole 622, and the rib 530 can be inserted into the push switch 800 through the through hole 622 to be matched with the push switch. An elastic element 700 is further disposed between the button 500 and the support 600, the elastic element 700 is sleeved on the rib rod 530 and located in an area surrounded by the partition plate 620 and the button 500, one end surface of the elastic element 700 abuts against the pressing block 520, and the other end surface opposite to the pressing block abuts against the partition plate 620, so as to provide a restoring force for the button 500. The side wall of the handle housing 110 is provided with a button hole 140 for accommodating the pressing block 520, and when the pressing block 520 is in a reset state, the outer end surface of the pressing block 520 is flush with the side wall of the handle housing 110, or slightly protrudes from the side wall of the handle housing 110, or slightly recesses in the side wall of the handle housing 110.

In the present embodiment, referring to fig. 3 and 4, the reserved gap between the button 500 and the outer sidewall of the handle 100 is an annular appearance gap X2 between the outer circumferential wall of the pressing block 520 and the hole wall of the button hole 140. The clearance reserved between the button 500 and the support 600 is the annular mounting clearance X1 between the connecting leg 511 and the cavity wall of the support 600.

Further, the pressing block 520 comprises a base body molded with a cover groove 521 and a light-blocking type key cover 522 fastened in the cover groove 521, wherein the base body of the pressing block 520 is made of a light-transmitting material so as to form an annular light strip in the circumferential direction of the key cover 522. In this embodiment, the electronic control board is further provided with an LED color lamp, and when the button 500 triggers the push switch 800 once, the color of the LED color lamp changes accordingly, and the different colors of the LED color lamp represent different wind temperatures. The pressing block 520 base body, the clamping structure 510 and the support 600 are made of transparent light-transmitting materials, so that the pressing block 520 base body, the clamping structure 510 and the support 600 can change along with the change of the color of the LED colored lamp, the height of the wind temperature can be judged according to the color of the annular lamp strip, and the LED colored lamp strip has the advantages of convenience in use and attractive appearance.

In this embodiment, the handle 100 is further provided with a push button assembly, which has the functions of turning on and off the blower and adjusting the wind speed of the blower. Referring to fig. 1, 3, 9 and 10, the push button assembly includes: the push button 300 is arranged on the outer side of the handle 100, and the push button 300 is provided with a first clamping structure extending into the handle 100; and a slider 400 disposed inside the handle 100 and having a second snap structure, the slider 400 being configured to connect the push button 300 and the adjustment switch 200; wherein, the push button 300 is engaged to the slider 400 through the engagement between the first and second engaging structures to push the trigger 210 of the adjustment switch 200 to slide linearly in the axial direction of the handle 100. In this way, the push button 300 in the present application is clamped to the slider 400 through the cooperation between the first clamping structure and the second clamping structure, so that the gear adjustment of the adjustment switch 200 is realized, and the adjustment switch has the advantages of simple structure and convenience in installation.

Further, referring to fig. 9 and 10, the first engaging structure includes a locking portion 310, and the second engaging structure includes a slot portion 410, wherein after the locking portion 310 is locked in the slot portion 410, the push button 300 only has a translational degree of freedom moving along the axial direction of the handle 100. Therefore, the push button 300 has a predetermined sliding track, and the problem that the push button 300 cannot slide smoothly due to shaking during movement can be avoided.

Further, in order to improve the efficiency and accuracy of the installation, please refer to fig. 12, a pair of locking parts 310 are provided on the push button 300, and the width dimensions of the pair of locking parts 310 in the axial direction of the handle 100 are different. In this case, since the locking portions 310 have different sizes, the mounting positions can be quickly distinguished, the mounting efficiency and accuracy can be effectively improved, and the mounting is convenient.

Specifically, referring to fig. 10, the locking portion 310 includes an extending block 311 having one end fixed to the push button 300 and growing along a direction perpendicular to the axial direction of the handle 100, and a locking buckle 312 formed at the other end of the extending block 311; the slot portion 410 includes a through hole 411 for the extension block 311 to pass through and a pair of stoppers formed on two sides of the through hole 411 for blocking the latch portion 310. Wherein, the side wall of the handle 100 is formed with a sliding slot 150 for the extension block 311 to pass through and slide, the sliding slot 150 is distributed along the axial direction of the handle 100, and the buckle 312 is located inside the handle 100. After the extension block 311 is inserted into the through hole 411 and the latch 312 is engaged with the stopper, the inner sidewall of the push button 300 abuts against the outer sidewall of the handle 100. Thus, the push button 300 can only translate along the axial direction of the handle 100, so that the push button 300 has a predetermined moving track, and the connection is stable and reliable.

Considering that if the entire inner sidewall of the push button 300 abuts against the outer sidewall of the handle 100, when the push button 300 moves, a large frictional resistance is generated between the push button 300 and the outer sidewall of the handle 100, therefore, the first ribs 320 distributed along the axial direction of the handle 100 are disposed on the inner sidewall of the push button 300, please refer to fig. 10, the ribs 320 are located at two opposite sides of the fastening portion 310 to reduce the contact area between the inner wall of the push button 300 and the outer wall of the handle 100, and further reduce the frictional resistance when the push button 300 moves.

Specifically, referring to fig. 12, the stoppers include a first stopper 412 engaged with the buckle 312 and a second stopper 413 inclined toward the first stopper 412, wherein the first stopper 412 and the second stopper 413 are disposed opposite to each other, and after the buckle 312 is engaged with the first stopper 412, the second stopper 413 abuts against the extending block 311, so that the extending block 311 abuts against the first stopper 412. Therefore, the stopper can make the connection between the push button 300 and the slider 400 more stable and reliable.

In this embodiment, the handle inner frame 120 is further provided with an opening 121 matched with the slider 400, the inner side wall of the slider 400 close to the adjustment switch 200 is provided with a convex frame 430, and the convex frame 430 is located in the opening 121 and is used for connecting the trigger part 210. Wherein the opening 121 facilitates the connection of the slider 400 with the trigger 210 of the adjustment switch 200 on the one hand and can limit the sliding travel of the slider 400 on the other hand.

Further, in order to ensure that the slider 400 has only a translational degree of freedom in the axial direction of the handle 100 and no translational degree of freedom in other directions, the two opposite side edges of the slider 400 are symmetrically provided with the side wings 420, and an arcuate accommodating space with a wide middle and narrow two sides is formed between the inner arcuate wall of the handle housing 110 and the handle inner frame 120, referring to fig. 13 and 14, the arcuate accommodating space and the side wings 420 can limit the slider 400 to move in the width direction and the thickness direction of the opening 121, so that the slider 400 can only translate in the length direction of the opening 121, wherein the length direction of the opening 121 is parallel to the axial direction of the handle 100. The wall surface of the side wing 420 matched with the handle inner frame 120 is also provided with a second rib 421, and the second rib 421 can reduce the friction resistance between the side wing 420 and the handle inner frame 120 when moving. Thus, the side wings 420 allow the slider 400 to smoothly slide on a predetermined slide track.

Further, for the convenience of promoting push button 300, in this embodiment, the shaping has the sand grip 330 that is convenient for promote it on push button 300's the lateral wall, and sand grip 330 distributes along the circumferential direction of handle 100, and wherein, the line of arbitrary point on sand grip 330 and the arbitrary point on trigger part 210 is the setting of contained angle M with the axial of handle 100, and the value range of contained angle M is: 20 to 70 degrees. The included angle M is within the above range so as to push the push button 300 even with a small force, thereby effectively improving the comfort of use.

It is understood that the button assembly of the present application can be applied to different usage scenarios, which are exemplified below.

The button assembly in the present application may be applied to a hair dryer including the button assembly, a handle 100 provided with the button assembly, and a blower fan located above the handle 100 and connected to the handle 100. An air inlet cover, a wind wheel, a motor, a heating wire assembly and an air outlet cover are sequentially arranged inside the fan along the direction from the air inlet of the fan to the air outlet of the fan. The button 500 can control the temperature of the heater assembly by pressing the switch 800, thereby realizing the wind temperature adjustment.

It should be understood that the above specific application is only an illustration of the button assembly in the present application, and those skilled in the art can make an adaptation according to the actual situation, and details are not described herein.

To sum up, button in this application passes through support piece and sets up in the handle, and exists between button and the support piece and between button and the handle lateral wall and reserve the clearance, from this, button and support piece have better centering nature to ensure that the difficult card of button is dead. Furthermore, the push button is clamped to the sliding piece through the matching between the first clamping structure and the second clamping structure, so that the gear adjustment of the adjusting switch is realized. Furthermore, the first ribs distributed along the axial direction of the handle are arranged on the inner side wall of the push button so as to reduce the contact area between the inner wall of the push button and the outer wall of the handle and further reduce the friction resistance when the push button moves; in this application, arbitrary one point on the sand grip and the line of arbitrary one point on the trigger part are the contained angle M setting with the axial of handle, so also can promote under the circumstances of exerting less power and push away the button, have improved use comfort effectively.

While the embodiments of the present application have been disclosed above, it is not limited to the applications listed in the description and the embodiments, which are fully applicable in a variety of fields suitable for this application, and further modifications will be readily apparent to those skilled in the art, and it is therefore not intended to be limited to the details shown and described herein without departing from the general concept defined by the appended claims and their equivalents.

Claims (10)

1. A button assembly for use with a handle of a hair dryer, comprising:

the supporting piece is arranged inside the handle and provided with a first connecting structure, and a second connecting structure matched with the first connecting structure is arranged inside the handle; and

the button is arranged on the supporting piece and is provided with a clamping structure for preventing the button from being separated from the supporting piece;

wherein support piece passes through first connection structure with cooperation joint between the second connection structure is received the handle, just the button passes through clamping structure joint extremely behind the support piece, the button with between the support piece and the button with there is the reserve clearance between the handle lateral wall, the reserve clearance is configured to prevent the button is perpendicular to the dead in the axial direction of pressing of handle card.

2. The button assembly as recited in claim 1,

the first connecting structure comprises a first axial clamping structure and a first circumferential positioning structure, and the second connecting structure comprises a second axial clamping structure matched with the first axial clamping structure and a second circumferential positioning structure matched with the first circumferential positioning structure;

the first axial clamping structure and the second axial clamping structure are matched to realize axial positioning and connection of the supporting piece and the handle;

the cooperation between the first and second circumferentially-located structures enables circumferential positioning of the support and the handle.

3. The button assembly as recited in claim 2,

the first axial clamping structure comprises a first clamping shoulder and a second clamping shoulder which are formed on the outer circumferential wall of the supporting piece, wherein the first clamping shoulder is arranged close to the button, and the second clamping shoulder is arranged far away from the button;

the second axial clamping structure comprises a mounting hole formed in the handle, a hole shoulder formed on the hole wall of the mounting hole and clamped with the first clamping shoulder, and a clamping hook clamped with the second clamping shoulder, wherein the hole shoulder and the clamping hook are respectively positioned at two opposite end parts of the mounting hole.

4. The button assembly as recited in claim 3,

the first circumferential positioning structure is a convex block which is formed at the first clamping shoulder and grows along the radial direction of the first clamping shoulder; the second circumferential positioning structure is a groove formed at the edge of the mounting hole.

5. The button assembly as recited in claim 1,

the button comprises a pressing block exposed on the outer side wall of the handle;

the clamping structure comprises at least one connecting leg arranged on the pressing block and a button buckle formed at the end part of the connecting leg;

the connecting legs are arranged on the inner end face of the pressing block and distributed along the pressing direction of the button.

6. The button assembly as recited in claim 5,

the supporting piece is hollow inside, two end parts of the supporting piece are opened, so that a cavity penetrating through the supporting piece is formed, and a partition plate which is perpendicular to the axial direction of the supporting piece and is clamped with the button buckle is formed in the cavity;

wherein, be provided with on the baffle and supply the logical draw-in groove that the connecting leg wore to establish.

7. The button assembly as recited in claim 5,

the outer side wall of the handle is provided with a button hole for accommodating the pressing block, wherein a reserved gap between the button and the outer side wall of the handle is an annular appearance gap X2 between the outer circumferential wall of the pressing block and the hole wall of the button hole.

8. The button assembly as recited in claim 5,

the reserved gap between the button and the support is an annular mounting gap X1 between the connecting leg and the cavity wall of the support.

9. The button assembly as recited in claim 5,

the pressing block comprises a base body and a light-isolating type key cover, wherein the base body is formed with a cover groove, the light-isolating type key cover is fastened in the cover groove, the base body of the pressing block is made of a light-transmitting material, and an annular lamp strip is formed in the circumferential direction of the key cover.

10. A hair dryer comprising the button assembly of any one of claims 1 to 9.

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