CN115472453A

CN115472453A - Button switch shell and button switch using same

Info

Publication number: CN115472453A
Application number: CN202211263127.3A
Authority: CN
Inventors: 陈志强
Original assignee: Wenzhou Jinhong Electrical Appliance Co ltd
Current assignee: Wenzhou Jinhong Electrical Appliance Co ltd
Priority date: 2022-10-15
Filing date: 2022-10-15
Publication date: 2022-12-13
Anticipated expiration: 2042-10-15
Also published as: CN115472453B

Abstract

The present application relates to the field of electrical control components, and more particularly, to a push button switch housing and a push button switch using the same. The utility model provides a button switch casing, includes the shell, is located the inside movable assembly of shell, movable assembly includes the movable button of making by transparent plastic, is used for restoring to the throne reset spring and the cover to establish the sealed sealing washer of movable button outside and shell cooperation, movable button includes hollow center post and the sealed cowling of airtight center post upper end. Because the whole movable button is made of transparent plastic, the light of the indicator light in the central column can directly penetrate through the sealing cover. Meanwhile, a sealing structure does not need to be arranged between the central column and the sealing cover because a separate transparent plastic plate does not need to be arranged. The number of parts is reduced, and meanwhile, the assembly difficulty is reduced.

Description

Button switch shell and button switch using same

Technical Field

The present application relates to the field of electrical control components, and more particularly, to a push button switch housing and a push button switch using the same.

Background

The button switch is a switch which utilizes a button to push a transmission mechanism, so that a movable contact and a fixed contact are connected or disconnected, and the circuit is switched. The button switch indicates the on or off state of the button switch through the brightness or different colors of the built-in indicator light.

In order to protect the electrical components inside the switch, the surface of the casing of the push-button switch is provided with through holes, a transparent plastic plate is covered on the through holes, and a waterproof sealing component is arranged between the plastic plate and the surface of the casing.

The following technical defects exist for the related art in the above: the light-transmitting sealing structure of the button switch shell at least needs the matching of the shell, the plastic plate and the sealing assembly, and has more parts and complex assembly.

Disclosure of Invention

In order to reduce spare part, reduce the complexity of equipment, this application provides a button switch casing.

In a first aspect, the present application provides a button switch housing that adopts the following technical solution:

the utility model provides a button switch casing, includes the shell, is located the inside movable assembly of shell, movable assembly includes the movable button of making by transparent plastic, is used for restoring to the throne reset spring and the cover to establish the sealed sealing washer of movable button outside and shell cooperation, movable button includes hollow center post and the sealed cowling of airtight center post upper end.

Through adopting above-mentioned technical scheme, because whole activity button is made by transparent plastic, therefore the light of the pilot lamp in the center post can directly see through the sealed cowling. Meanwhile, a sealing structure does not need to be arranged between the central column and the sealing cover because a separate transparent plastic plate does not need to be arranged. The number of parts is reduced, and meanwhile, the assembly difficulty is reduced.

Preferably, the upper end of center post extends the shaping and has the mounting panel, the circumference round of mounting panel is equipped with a plurality of draw-in grooves, movable assembly includes the panel of making by astigmatic material, the circumference round shaping of panel has the fixture block with draw-in groove complex.

By adopting the technical scheme, the panel is installed through the installation plate, and the panel is made of the light scattering material, so that the light of the indicating lamp can be scattered, the light is in a soft scattering shape, and dazzling light spots are avoided.

Preferably, the sealing cover is an arc surface with an upward arched center, the mounting plate comprises an unfolding portion which is connected with the center column and extends upwards and outwards from the joint of the center column, and a clamping portion which extends outwards and is formed at the upper end of the unfolding portion, the clamping groove is formed in the clamping portion, the lower surface of the clamping portion and the outer surface of the center column are in rounded transition, the transition surface formed by the rounded transition is the lower surface of the unfolding portion, and the upper surface of the clamping portion exceeds the upper end point of the sealing cover by 0.05-0.1mm.

Through adopting above-mentioned technical scheme, set the mounting panel to expansion portion and joint portion, because expansion portion is upwards outside extension, and by the lower surface of fillet as expansion portion, consequently form the easy deformation point in the position of expansion portion. Because can take place the condition of rocking behind avoiding panel mounting, consequently cooperation size between them is inseparabler, when the panel was installed through the cooperation of fixture block and draw-in groove, can make the panel can with the cooperation of the smooth joint of mounting panel through the atress deformation of expansion portion, can fix the panel not rocking after expansion portion is not atress resumes simultaneously again. Because the upper surface of joint portion surpasss the up end of sealed cowling slightly, consequently the up end of sealed cowling can also play the effect of restriction expansion portion limit deformation angle simultaneously, avoids expansion portion transition deformation impaired.

Preferably, the shell comprises an external section, a sealing section and an installation section which are arranged in sequence, wherein the inner diameter of the external section is larger than that of the sealing section, and the inner diameter of the sealing section is larger than that of the installation section; a guide groove which penetrates through the mounting section along the axial direction of the mounting section is formed in the inner wall of the mounting section, a first locking block is formed in the inner wall of the mounting section, a guide block clamped into the guide groove and a first limiting ring positioned above the guide block are formed in the outer side wall of the central column, two locking grooves with lower ends penetrating through the central column are formed in the side surface of the central column, a second locking block matched with the first locking block is formed in the position, close to the lower end, in each locking groove, and the reset spring is sleeved on the position, between the first limiting ring and the guide block, on the central column; when the button switch is pressed, one end of the return spring is abutted to the connection transition surface of the sealing section and the mounting section.

Through adopting above-mentioned technical scheme, the cooperation through guide way and guide block restricts the cooperation position of shell and activity button, when first locking piece card goes into the locking inslot and cooperates with second locking piece, can restrict the extreme activity position of activity button, avoids the activity button to deviate from in the shell.

Preferably, a second limiting ring is formed at a position, above the first limiting ring, on the side surface of the central column, a sealing ring is sleeved between the first limiting ring and the second limiting ring, the inner diameter of the sealing ring is smaller than the outer diameter of the central column, and the outer diameter of the sealing ring is larger than the inner diameter of the sealing ring.

Through adopting above-mentioned technical scheme, set up the sealing washer between first spacing ring and second spacing ring for the position of sealing washer is restricted, constantly makes a round trip the in-process of activity at the activity button, can not lead to losing sealed waterproof effect because of the skew of sealing washer.

Preferably, the sealing washer includes vertical ring, the shaping in the outside horizontal ring that extends of the lower extreme level of vertical ring and the shaping in the outer end of horizontal ring tilt up outside the extending tilt ring, the height of vertical ring, tilt ring equals with the interval between first spacing ring, the second spacing ring, the lateral wall of second spacing ring is close to one side shaping of first spacing ring and has the annular groove, and the width of annular groove is greater than the thickness of tilt ring.

Through adopting above-mentioned technical scheme, set up the ring channel on first spacing ring and make the tilt ring have sufficient space to supply the tilt ring deformation when the inner wall butt of tilt ring and seal segment. Meanwhile, the width of the annular groove is larger than the thickness of the inclined ring, so that the inclined ring cannot be abutted with the side wall of the annular groove to form a sealing surface in the compression process, a sealed space is prevented from being formed between the sealing ring and the movable button, and when the switch is continuously pressed for many times, the friction resistance is increased due to the fact that the sealing ring and the sealing section generate heat through friction to cause gas expansion in the sealed space to influence the resistance of pressing the button switch.

Preferably, the first locking blocks comprise first upper guide surfaces and first lower guide surfaces, the first upper guide surfaces incline downwards from the inner wall of the mounting section to the axis direction of the mounting section, the first lower guide surfaces incline upwards from the inner wall of the mounting section to the axis direction of the mounting section, and the inclination amplitudes of the first upper guide surfaces and the first lower guide surfaces are equal; the second locking piece all includes guiding surface and second lower guiding surface on the second, and the guiding surface is toward keeping away from center post axis direction downward sloping on the second, and the guiding surface is toward keeping away from center post axis direction tilt up under the second, and the contained angle that guiding surface and center post axis become on the second is greater than the contained angle that guiding surface and center post axis become under the second.

By adopting the technical scheme, the upper and lower surfaces of the first locking block and the second locking block are both arranged to be inclined surfaces, so that clamping can be installed in a matched manner by guiding the inclined surfaces during installation. And the included angle that the second goes up spigot surface and king-post axis and becomes is greater than the second down spigot surface and king-post axis and becomes so that when activity button or other parts damaged, can dismantle the activity button more conveniently and get off and change.

Preferably, the shell is including external section, sealing section and the installation section that sets gradually, and the external diameter of external section is greater than the external diameter of sealing section, and the external diameter of sealing section equals with the external diameter of installation section, and the outside transition position shaping of external section and sealing section has the spacing round platform that the diameter is greater than the external diameter of external section, and the part shaping that lies in spacing round platform top on the lateral wall of external section has first external screw thread, be equipped with on the external section with first thread fit's decoration cover, the shaping has the second external screw thread on the lateral wall of sealing section, be equipped with on the sealing section with second external screw thread fit's mounting nut.

Through adopting above-mentioned technical scheme, through the setting of first external screw thread and second external screw thread to connect the installation and decorate cover and mounting nut.

Preferably, a plurality of positioning grooves and limiting grooves are arranged at intervals at one end, far away from the external section, of the outer side wall of the mounting section, and each positioning groove comprises a first groove section and a second groove section, wherein the first groove section extends from the end face, far away from the external section, of the mounting section to the direction of the external section, and the second groove section extends along the circumferential direction of the mounting section at one end, close to the external section, of the first groove section; the limiting groove comprises a primary groove and a final groove located on the side face of the primary groove, and the direction of the final groove relative to the primary groove is the same as the extending direction of the second groove section.

By adopting the technical scheme, when the button switch shell is connected with the base, the lower end of the button switch shell is inserted into the inner hole, the positioning block is clamped into the first groove section of the positioning groove, and the limiting block is clamped into the initial groove of the limiting groove. At the moment, the button switch shell rotates relative to the base, so that the positioning block is clamped into the second groove section, the limiting block is clamped into the final groove, and the button switch shell is connected with the base.

In a second aspect, the present application provides a push button switch, which adopts the following technical solution:

a button switch comprises a base and the button switch shell.

Through adopting above-mentioned technical scheme, reduce button switch's spare part quantity through using foretell button switch casing, reduce the equipment degree of difficulty simultaneously.

In summary, the present application includes at least one of the following beneficial technical effects:

1. whole movable button is made by transparent plastic, and the light of the pilot lamp in the center post can directly see through the sealed cowling, has reduced the degree of difficulty of equipment when reducing spare part quantity.

2. Through the setting of constant head tank and spacing groove for can conveniently link together button switch casing and base equipment.

Drawings

FIG. 1 is a schematic view of a push button switch housing;

FIG. 2 is a schematic cross-sectional view of the housing;

FIG. 3 is a schematic cross-sectional view of the push button switch housing;

FIG. 4 is an enlarged view at A in FIG. 3;

FIG. 5 is an exploded schematic view of the faceplate and the active button;

FIG. 6 is an enlarged view at B in FIG. 3;

FIG. 7 is a schematic view of the structure of the push button switch;

fig. 8 is a schematic view of the structure of the base portion.

Description of reference numerals: 1. a housing; 2. a movable component; 3. a decorative cover; 4. mounting a nut; 5. an external section; 6. a sealing section; 7. an installation section; 8. a limiting round table; 9. a guide groove; 10. a first locking piece; 11. a first upper guide surface; 12. a first lower guide surface; 13. an avoidance groove; 14. positioning a groove; 15. a limiting groove; 16. a first groove section; 17. a second groove section; 18. a primary tank; 19. a final position groove; 20. an active button; 21. a return spring; 22. a panel; 23. a seal ring; 24. a central column; 25. a sealing cover; 26. mounting a plate; 27. an unfolding part; 28. a clamping part; 29. a convex edge; 30. a card slot; 31. a groove; 32. a clamping block; 33. clamping the protrusions; 34. connecting grooves; 35. a locking groove; 36. a second locking block; 37. a second upper guide surface; 38. a second lower guide surface; 39. a first limit ring; 40. a second stop collar; 41. a guide block; 42. a vertical ring; 43. a horizontal ring; 44. an inclined ring; 45. an annular groove; 46. an inner bore; 47. positioning a block; 48. a limiting block; 49. a base.

Detailed Description

The present application is described in further detail below with reference to figures 1-8.

The embodiment of the application discloses a button switch shell.

As shown in fig. 1, the push button switch case includes a housing 1, a movable member 2 located inside the housing 1, a decorative cover 3 located outside the housing 1, and a mounting nut 4.

As shown in fig. 2, the housing 1 includes an external section 5, a sealing section 6 located below the external section 5, and an installation section 7 located below the sealing section 6, wherein the internal diameter of the external section 5 is greater than the internal diameter of the sealing section 6, and the internal diameter of the sealing section 6 is greater than the internal diameter of the installation section 7; the external diameter of external section 5 is greater than the external diameter of seal section 6, and the external diameter of seal section 6 equals with the external diameter of installation section 7, and the outside transition position shaping of external section 5 and seal section 6 has the spacing round platform 8 that the diameter is greater than external section 5 external diameter.

As shown in fig. 2, the external section 5 is smoothly transited to the edge rounding at the inner wall of the sealing section 6, and the sealing section 6 is smoothly transited to the edge rounding at the inner wall of the mounting section 7. The shaping has twice to run through the guide way 9 of installing section 7 on the vertical direction on the 7 inner walls of installing section, and the cross-section semicircular in shape of guide way 9, and twice guide way 9 sets up along the axis central symmetry of installing section 7. The upper end of the inner wall of the mounting section 7 is positioned at the left side of the two guide grooves 9, and a first locking block 10 is respectively formed at the upper end of the inner wall of the mounting section 7, and the two first locking blocks 10 are arranged along the axis center of the mounting section 7 in a symmetrical mode. Every first locking piece 10 all includes first up guiding surface 11 and first guiding surface 12 down, and first up guiding surface 11 is from the downward sloping of erection segment 7 axis direction of erection segment 7 inner wall, and first guiding surface 12 is from the upward sloping of erection segment 7 axis direction of erection segment 7 inner wall, and the first amplitude of up guiding surface 11 and the first guiding surface 12 slope equals. Four avoidance grooves 13 for avoiding a button switch contact seat (not belonging to a shell and not shown in the figure) are uniformly formed at the lower end of the inner wall of the mounting section 7 in a circle.

As shown in fig. 1 and fig. 2, a first external thread is formed on the part, located above the limiting circular truncated cone 8, of the outer side wall of the external section 5, and the decorative cover 3 is connected with the first external thread in a matched mode. The part that is located spacing round platform 8 below on the lateral wall of sealing section 6 forms and has the second external screw thread, and the second external screw thread extends downwards to the middle part of installation section 7, and mounting nut 4 is connected with the cooperation of the second external screw thread. The lower extreme interval of erection section 7 lateral wall is provided with four constant head tanks 14 and spacing groove 15. Each positioning groove 14 comprises a first groove section 16 extending upward from the bottom surface of the mounting section 7, and a second groove section 17 extending horizontally rightward from the upper end of the first groove section 16. Spacing groove 15 includes initial position groove 18 and is located initial position groove 18 right side final position groove 19, and initial position groove 18 and final position groove 19 all extend along vertical direction and the lower extreme all runs through installing section 7. The cross section lateral wall in primary groove 18 includes the arc surface and connects in the straight face on arc surface right side, and straight face turns right from a left side to the direction slope of keeping away from the installing section 7 center, and the cross section lateral wall in final groove 19 is the arc surface, and the transition of the part fillet between primary groove 18 and the final groove 19.

As shown in fig. 3 and 4, the movable assembly 2 includes a movable button 20, a return spring 21 for returning the movable button 20, a panel 22 connected to an upper end of the movable button 20, and a packing 23 installed at a side of the movable button 20. The movable button 20 is made of transparent polycarbonate material, the movable button 20 comprises a hollow tubular central column 24 and a sealing cover 25 for sealing the upper end of the central column 24, and the sealing cover 25 is an arc surface with an upward arched center. The upper end of the central column 24 is extended and formed with a mounting plate 26 for clamping the fixing panel 22, the mounting plate 26 comprises an expanding portion 27 connected with the central column 24 and extending upwards and outwards from the joint of the central column 24 and a clamping portion 28 extending and formed outwards from the upper end of the expanding portion 27, and the upper surface of the clamping portion 28 is 0.05-0.1mm higher than the upper end point of the sealing cover 25. Smooth transition is carried out between the upper surfaces of the clamping portion 28 and the unfolding portion 27, the lower surface of the clamping portion 28 and the outer surface of the central column 24 are in fillet transition, and the transition surface formed by the fillets is the lower surface of the unfolding portion 27. As shown in fig. 5, four convex edges 29 are uniformly formed on the outer side of the clamping portion 28 in a circle, a clamping groove 30 is formed in the middle of each convex edge 29, and a groove 31 with a size larger than that of the clamping groove 30 is formed in a position, below the clamping groove 30, of the convex edge 29. The panel 22 is a circular plate made of light scattering material, the diameter of the circular plate is slightly smaller than the inner diameter of the external section 5, four clamping blocks 32 extending downwards are uniformly formed around the panel 22 in a circle, clamping protrusions 33 matched with the grooves 31 are formed in the direction of the clamping blocks 32 facing the center of the panel 22, and the panel 22 is fixed on the movable button 20 through the matching structure of the clamping protrusions 33 and the grooves 31.

As shown in fig. 5, the lower end of the central column 24 is formed with four connecting slots 34 for matching with external parts, and different connecting slots 34 are opened with different lengths to provide error proofing. Two locking grooves 35 with lower ends penetrating through the central column 24 are formed in the side face of the central column 24, the two locking grooves 35 are arranged in a central symmetry mode along the axis of the central column 24, and a second locking block 36 is formed in the position, close to the lower end, in each locking groove 35. Each second locking block 36 includes a second upper guide surface 37 and a second lower guide surface 38, the second upper guide surface 37 inclines downward in the direction away from the axis of the central pillar 24, the second lower guide surface 38 inclines upward in the direction away from the axis of the central pillar 24, and the included angle formed by the second upper guide surface 37 and the axis of the central pillar 24 is larger than the included angle formed by the second lower guide surface 38 and the axis of the central pillar 24. When the movable button 20 is inserted into the housing 1, the first locking block 10 enters the locking groove 35 through the second locking block 36, thereby limiting the distance that the movable button 20 is moved upward.

As shown in fig. 3 and 5, a first limiting ring 39 and a second limiting ring 40 are formed on the side surface of the central column 24, the first limiting ring 39 is located below the second limiting ring 40, the outer diameters of the first limiting ring 39 and the second limiting ring 40 are both smaller than the inner diameter of the sealing section 6, and a gap is left between the first limiting ring 39 and the second limiting ring 40. Two guide blocks 41 with semicircular sections are formed on the side surface of the central column 24 close to the lower end, and the guide blocks 41 are clamped in the guide grooves 9. The outer side surface of the central column 24 is sleeved with the return spring 21 and is located between the first limiting ring 39 and the guide block 41, when the button switch is pressed, the lower end surface of the return spring 21 abuts against the connection transition surface of the sealing section 6 and the mounting section 7, and the movable assembly 2 is controlled to reset after the button switch is loosened.

As shown in fig. 5 and 6, the sealing ring 23 is fitted around the first retainer ring 39 and the second retainer ring 40, and the sealing ring 23 includes a vertical ring 42, a horizontal ring 43 formed at a lower end of the vertical ring 42 and extending horizontally outward, and an inclined ring 44 formed at an outer end of the horizontal ring 43 and extending obliquely upward and outward. Wherein the height of vertical ring 42, slope ring 44 equals with the interval between first spacing ring 39, the second spacing ring 40, and the internal diameter of vertical ring 42 is less than the external diameter of center post 24, and the biggest external diameter of slope ring 44 is greater than the internal diameter of seal section 6, and sealing washer 23 is sealed with the inner wall butt of seal section 6 all the time in the button switch use. An annular groove 45 is formed on the outer side wall of the second retainer ring 40 near the lower end, and the width of the annular groove 45 is larger than the thickness of the inclined ring 44.

The second embodiment of the application discloses a button switch.

As shown in fig. 7 and 8, the push button switch includes a push button switch housing according to the first embodiment and a base 49, an inner hole 46 is formed on the base 49, and a positioning block 47 engaged with the positioning groove 14 and a limiting block 48 engaged with the limiting groove 15 are formed on the wall of the inner hole 46. When the button switch housing is connected to the base 49, the lower end of the button switch housing is inserted into the inner hole 46, the positioning block 47 is engaged with the first groove section 16 of the positioning groove 14, and the limiting block 48 is engaged with the initial groove 18 of the limiting groove 15. At this time, the push-button switch housing is rotated relative to the base 49, so that the positioning block 47 is clamped into the second groove section 17, the limiting block 48 is clamped into the final position groove 19, and the push-button switch housing is connected with the base 49.

When the push button switch is used, the panel 22 is pressed, so that the movable button 20 moves into the housing 1 and the return spring 21 is compressed. The inclined ring 44 of the sealing ring 23 is abutted with the inner wall of the sealing section 6 to form a sealing surface, so that the button switch can always keep waterproof performance in the using process. When the panel 22 is released, the movable button 20 is reset by the action of the return spring 21.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A push-button switch casing, includes shell (1), is located movable subassembly (2) inside shell (1), characterized by: the movable assembly (2) comprises a movable button (20) made of transparent plastic, a return spring (21) used for returning the movable button (20) and a sealing ring (23) which is sleeved on the outer side of the movable button (20) and is sealed with the shell (1) in a matched mode, and the movable button (20) comprises a hollow central column (24) and a sealing cover (25) which is arranged at the upper end of the sealed central column (24).

2. The push button switch housing of claim 1, wherein: the upper end of center post (24) extends the shaping and has mounting panel (26), the circumference of mounting panel (26) is equipped with a plurality of draw-in grooves (30) one round, movable assembly (2) are including panel (22) of being made by astigmatic material, the circumference one round shaping of panel (22) has with draw-in groove (30) complex fixture block (32).

3. The push button switch housing of claim 2, wherein: sealing boot (25) are the arc surface that the center upwards arched, mounting panel (26) include with center post (24) link to each other and from center post (24) junction begin upwards outside the extension portion (27) that extend and in the fashioned joint portion (28) of the upper end outside extension of extension portion (27), draw-in groove (30) shaping in joint portion (28), the fillet transition between the lower surface of joint portion (28) and the surface of center post (24), and the transition surface that the fillet formed is the lower surface of expansion portion (27), the upper surface of joint portion (28) surpasss the up end 0.05-0.1mm of sealing boot (25).

4. The push button switch housing of claim 1, wherein: the shell (1) comprises an external section (5), a sealing section (6) and an installation section (7) which are sequentially arranged, wherein the inner diameter of the external section (5) is larger than that of the sealing section (6), and the inner diameter of the sealing section (6) is larger than that of the installation section (7); the inner wall of the mounting section (7) is formed with a guide groove (9) which axially penetrates through the mounting section (7) along the mounting section (7), the inner wall of the mounting section (7) is formed with a first locking block (10), the outer side wall of the central column (24) is formed with a guide block (41) clamped into the guide groove (9) and a first limiting ring (39) positioned above the guide block (41), the side surface of the central column (24) is formed with two locking grooves (35) with lower ends penetrating through the central column (24), a second locking block (36) matched with the first locking block (10) is formed at a position close to the lower ends inside the locking grooves (35), and the reset spring (21) is sleeved on the position between the first limiting ring (39) and the guide block (41) on the central column (24); when the button switch is pressed, one end of the return spring (21) is abutted against the connection transition surface of the sealing section (6) and the mounting section (7).

5. The push button switch housing of claim 4, wherein: a second limiting ring (40) is formed in the position, located above the first limiting ring (39), of the side face of the central column (24), a sealing ring (23) is sleeved between the first limiting ring (39) and the second limiting ring (40), the inner diameter of the sealing ring (23) is smaller than the outer diameter of the central column (24), and the outer diameter of the sealing ring (23) is larger than the inner diameter of the sealing ring (23).

6. The push button switch housing of claim 5, wherein: the sealing ring (23) comprises a vertical ring (42), a horizontal ring (43) and an inclined ring (44), wherein the horizontal ring (43) is formed at the lower end of the vertical ring (42) and extends outwards, the inclined ring (44) is formed at the outer end of the horizontal ring (43) and extends outwards in an upward inclined mode, the height of the vertical ring (42) and the height of the inclined ring (44) are equal to the distance between the first limiting ring (39) and the second limiting ring (40), an annular groove (45) is formed on one side, close to the first limiting ring (39), of the outer side wall of the second limiting ring (40), and the width of the annular groove (45) is larger than the thickness of the inclined ring (44).

7. The push button switch housing of claim 4, wherein: the first locking block (10) comprises first locking blocks (10) which respectively comprise a first upper guide surface (11) and a first lower guide surface (12), the first upper guide surface (11) inclines downwards from the inner wall of the mounting section (7) to the axis direction of the mounting section (7), the first lower guide surface (12) inclines upwards from the inner wall of the mounting section (7) to the axis direction of the mounting section (7), and the inclination amplitude of the first upper guide surface (11) and the first lower guide surface (12) is equal; the second locking block (36) comprises a second upper guide surface (37) and a second lower guide surface (38), the second upper guide surface (37) inclines downwards in the direction away from the axis of the central column (24), the second lower guide surface (38) inclines upwards in the direction away from the axis of the central column (24), and the included angle formed by the second upper guide surface (37) and the axis of the central column (24) is larger than the included angle formed by the second lower guide surface (38) and the axis of the central column (24).

8. The push button switch housing of claim 1, wherein: the outer shell (1) comprises an external section (5), a sealing section (6) and an installation section (7) which are sequentially arranged, the outer diameter of the external section (5) is larger than the outer diameter of the sealing section (6), the outer diameter of the sealing section (6) is equal to the outer diameter of the installation section (7), a limiting round platform (8) with the diameter larger than the outer diameter of the external section (5) is formed at the outer side transition position of the external section (5) and the sealing section (6), a first external thread is formed on the portion, located above the limiting round platform (8), of the outer side wall of the external section (5), a decoration cover (3) matched with the first external thread is arranged on the external section (5), a second external thread is formed on the outer side wall of the sealing section (6), and an installation nut (4) matched with the second external thread is arranged on the sealing section (6).

9. The push button switch housing of claim 8, wherein: a plurality of positioning grooves (14) and limiting grooves (15) are arranged at intervals at one end, far away from the external section (5), of the outer side wall of the mounting section (7), and each positioning groove (14) comprises a first groove section (16) extending towards the external section (5) from the end face, far away from the external section (5), of the mounting section (7) and a second groove section (17) extending along the circumferential direction of the mounting section (7) at one end, close to the external section (5), of the first groove section (16); the limiting groove (15) comprises a primary groove (18) and a final groove (19) located on the side face of the primary groove (18), and the direction of the final groove (19) relative to the primary groove (18) is the same as the extending direction of the second groove section (17).

10. A push-button switch is characterized in that: comprising a base (49) and a push button switch housing according to any of claims 1-9.