Self-locking push button switch

Abstract

The application discloses a self-locking button switch and belongs to the technical field of switches. The self-locking button switch comprises a cover shell, a trigger ring, a pushing ring and an elastic piece. A plurality of positioning columns are arranged in the cover shell in a circumferential direction. The trigger ring is slidably arranged in the cover shell. One end of the trigger ring is provided with a plurality of supporting plates in a circumferential direction. A limiting groove is formed between adjacent supporting plates. The limiting groove is used for accommodating the corresponding positioning column. An end of the supporting plate is provided with a self-locking groove. The trigger ring can rotate relative to the pushing ring. The pushing ring is slidably arranged in the cover shell. The pushing ring is provided with a limiting part used for abutting against the trigger ring. One end of the pushing ring is provided with a plurality of push rods corresponding to the supporting plates in a circumferential direction. The elastic piece is arranged between the pushing ring and the cover shell. The self-locking button switch can effectively prevent abnormal sound and effectively prevent the supporting plate from being broken at the limiting groove, thereby prolonging the service life of the self-locking button switch.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of switch, in particular to a self-locking button switch. BACKGROUND

[0002] The self-locking button is a common button switch. It is widely used in mechanical equipment, automation equipment, machine tool equipment, building industry, etc. When the self-locking button is pressed for the first time, the switch is turned on and kept, and when the self-locking button is pressed for the second time, the switch is turned off.

[0003] In the prior art, the self-locking of the self-locking button is realized by a self-locking module, wherein the self-locking module comprises an elastic member, a self-locking member and a key. During the pressing and releasing of the key, the part of the self-locking member cooperating with the self-locking will produce a large impact under the action of the elastic member, producing an abnormal sound. Moreover, repeated operation of the self-locking button will cause the part of the self-locking member cooperating with the self-locking to break due to the impact, affecting the service life of the self-locking button. SUMMARY

[0004] The purpose of the present application is to provide a self-locking button switch which reduces impact and improves service life.

[0005] To achieve this purpose, the present application adopts the following technical solutions:

[0006] A self-locking button switch is provided, comprising:

[0007] A cover is provided, and a plurality of positioning columns are arranged in the cover in a circumferential direction;

[0008] A trigger ring is slidably arranged in the cover, and a plurality of supporting plates are arranged on one end of the trigger ring in a circumferential direction. Limiting grooves are formed between adjacent supporting plates, and the limiting grooves are used for accommodating corresponding positioning columns. End portions of the supporting plates are provided with self-locking grooves;

[0009] A pushing ring is slidably arranged in the cover, and a limiting portion is arranged on the pushing ring for abutting against the trigger ring. The trigger ring can rotate relative to the pushing ring. A plurality of push rods corresponding to the supporting plates are arranged on one end of the pushing ring in a circumferential direction;

[0010] An elastic member is arranged between the pushing ring and the cover;

[0011] The pushing ring can be pressed to switch the self-locking button switch between an initial position and a self-locking position.

[0012] Optionally, end portions of the push rods are in a planar shape or a circular arc shape.

[0013] Optionally, sliding grooves are formed between adjacent push rods, and the positioning columns are slidably arranged in the sliding grooves one by one.

[0014] Optionally, an outer periphery of the pushing ring is provided with a first annular platform, the shell is provided with a second annular platform, the elastic member is sleeved on all the push rods and all the positioning columns, and a first end of the elastic member abuts against the first annular platform, and a second end of the elastic member abuts against the second annular platform.

[0015] Optionally, an outer periphery of the first annular platform is provided with a sealing groove, and the sealing groove is provided with a first sealing ring.

[0016] Optionally, the button cap is arranged in the shell and connected with the pushing ring; wherein,

[0017] In the initial position, the button cap is arranged protruding from the shell or arranged flush with the shell;

[0018] In the self-locking position, the button cap is arranged recessed in the shell.

[0019] Optionally, when the initial position is switched to the self-locking position, the push rod pushes against the corresponding supporting plate, so that the positioning column is separated from the limiting groove, and the trigger ring rotates, so that the push rod is attached to a side surface of the next supporting plate to form a first transition position, in the first transition position, the elastic member is used to drive the pushing ring and the trigger ring to move axially to the self-locking groove of the next supporting plate.

[0020] When the self-locking position is switched to the initial position, the push rod pushes against the corresponding supporting plate, so that the positioning column is separated from the self-locking groove, and the trigger ring rotates, so that the push rod is arranged in the self-locking groove of the next supporting plate to form a second transition position, in the second transition position, the elastic member is used to drive the pushing ring and the trigger ring to move axially to the next limiting groove.

[0021] Optionally, the limiting portion is a stepped platform arranged on an inner side of the pushing ring, and one end of the trigger ring is provided with a first hook.

[0022] In the initial position and the self-locking position, the first hook abuts against the stepped platform.

[0023] In the first transition position and the second transition position, a gap is formed between the first hook and the stepped platform in the moving direction of the pushing ring.

[0024] Optionally, the supporting plate comprises a first side and a second side arranged oppositely in a circumferential direction, the limiting groove is formed between the adjacent first side and second side, and an end of the supporting plate comprises a first inclined surface, a self-locking surface and a second inclined surface connected in sequence, the first inclined surface and the second inclined surface are both arranged to be inclined towards the bottom of the supporting plate from the first side to the second side, the self-locking groove is formed between the first inclined surface and the self-locking surface, and the push rod can abut against the corresponding second inclined surface; wherein,

[0025] At the first transition position, the side surface of the push rod is in contact with the corresponding first side surface;

[0026] At the self-locking position, the end of the positioning column is in abutment with the corresponding first inclined surface, and the side surface of the positioning column is in contact with the corresponding self-locking surface;

[0027] At the second transition position, the end of the push rod is in abutment with the corresponding first inclined surface, and the side surface of the push rod is in contact with the corresponding self-locking surface.

[0028] Optionally, the end of the push rod comprises a first inclined end surface, the inclination direction of the first inclined end surface is the same as that of the first inclined surface and the second inclined surface, and the push rod can abut against the second inclined surface through the first inclined end surface to abut against the supporting plate; wherein,

[0029] At the second transition position, the first inclined end surface is in contact with the corresponding first inclined surface.

[0030] Optionally, the end of the positioning column comprises a second inclined end surface, the inclination direction of the second inclined end surface is the same as that of the first inclined surface and the second inclined surface, and the inclination of the second inclined end surface is greater than or equal to that of the first inclined surface.

[0031] Optionally, the first inclined surface is arranged as a circular arc surface or a plane, and the second inclined surface is arranged as a circular arc surface or a plane.

[0032] Beneficial effects:

[0033] The self-locking button switch provided by the application can abut against the supporting plate through the push rod when switching from the initial position to the self-locking position, so that the supporting plate is separated from the limiting groove and rotated to the self-locking groove corresponding to the positioning column in the axial direction, and the supporting plate moves to the self-locking groove in the axial direction under the action of the elastic member; the supporting plate is separated from the self-locking groove and inserted into the limiting groove when switching from the self-locking position to the initial position through the push rod. In the two switching processes, the impact caused has little effect on the self-locking groove of the supporting plate, effectively preventing the supporting plate from being broken at the self-locking groove. BRIEF DESCRIPTION OF DRAWINGS

[0034] Figure 1 is the structure diagram of the self-locking button switch provided by the embodiment one of the present application;

[0035] Figure 2 is the structure diagram of the initial position of the self-locking button switch provided by the embodiment one of the present application;

[0036] Figure 3 is the structure diagram of the first transition position of the self-locking button switch provided by the embodiment one of the present application;

[0037] Figure 4 is the structure diagram of the self-locking position of the self-locking button switch provided by the embodiment one of the present application;

[0038] Figure 5 is the structure diagram of the second transition position of the self-locking button switch provided by the embodiment one of the present application;

[0039] Figure 6 is the structure diagram of the trigger ring provided by the embodiment one of the present application;

[0040] Figure 7 is the structure diagram of the push ring provided by the embodiment one of the present application;

[0041] Figure 8 is the structure diagram of the cover provided by the embodiment one of the present application;

[0042] Figure 9 is the structure diagram of the self-locking button switch provided by the embodiment one of the present application;

[0043] Figure 10 is the structure diagram of the push ring provided by the embodiment one of the present application;

[0044] Figure 11 is the structure diagram of the button cap provided by the embodiment one of the present application;

[0045] Figure 12 is the structure diagram of the push ring provided by the embodiment two of the present application;

[0046] Figure 13 is the structure diagram of the initial position of the self-locking button switch provided by the embodiment two of the present application;

[0047] Figure 14 is the structure diagram of the first transition position of the self-locking button switch provided by the embodiment two of the present application;

[0048] Figure 15 is the structure diagram of the self-locking position of the self-locking button switch provided by the embodiment two of the present application;

[0049] Figure 16is a structure schematic view of the self-locking button about the second transition position provided in the second embodiment of the present application;

[0050] Figure 17 is a state structure schematic view of the self-locking button in the process from the second transition position to the initial position provided in the second embodiment of the present application.

[0051] in the figure:

[0052] 100, cover; 110, positioning column; 111, second inclined end face; 120, second annular table;

[0053] 200, trigger ring; 210, supporting plate; 2101, limiting groove; 2102, self-locking groove; 211, first side face; 212, second side face; 213, first inclined face; 214, self-locking face; 215, second inclined face; 220, first hook; 230, inner ring part; 2301, force relieving groove;

[0054] 300, pushing ring; 310, limiting part; 320, pushing rod; 3201, sliding groove; 321, first inclined end face; 322, first inclined face; 323, first limiting face; 324, second inclined face; 325, second limiting face; 326, third inclined face; 330, first annular table; 3301, sealing groove; 340, clasp ring; 341, limiting protrusion;

[0055] 400, elastic member;

[0056] 500, first sealing ring;

[0057] 600, button cap; 610, second hook;

[0058] 700, second sealing ring. DETAILED DESCRIPTION

[0059] The present application will be further described below in conjunction with the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present application, but not to limit the present application. In addition, it should be noted that, for the convenience of description, only the parts related to the present application are shown in the drawings, but not all the structures.

[0060] In the description of the present application, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0061] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature is "on", "above" and "over" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the first feature is higher in horizontal height than the second feature. The first feature is "under", "below" and "underneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the first feature is lower in horizontal height than the second feature.

[0062] In the description of the present embodiment, the terms "upper", "lower", "right", "left", and other orientation or position relationships are based on the orientation or position relationship shown in the drawings, and are only for the convenience of description and simplification of operation, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0063] Embodiment one

[0064] With reference to Figures 1 to 6 As shown in the drawings, the present embodiment provides a self-locking button switch, which comprises a housing 100, a trigger ring 200, a pushing ring 300 and an elastic member 400.

[0065] Specifically, a plurality of positioning columns 110 are arranged in the housing 100 in a circumferential direction; the trigger ring 200 is slidingly arranged in the housing 100, one end of the trigger ring 200 is arranged with a plurality of supporting plates 210 in a circumferential direction, a limiting groove 2101 is formed between adjacent supporting plates 210, the limiting groove 2101 is used for accommodating a corresponding positioning column 110, and an end of the supporting plate 210 is provided with a self-locking groove 2102; the pushing ring 300 is slidingly arranged in the housing 100, the pushing ring 300 is provided with a limiting portion 310 for abutting against the trigger ring 200, the trigger ring 200 can rotate relative to the pushing ring 300, and one end of the pushing ring 300 is arranged with a plurality of push rods 320 corresponding to the supporting plates 210 one by one; the elastic member 400 is arranged between the pushing ring 300 and the housing 100.

[0066] In the present embodiment, the pushing ring 300 can be pressed to switch the self-locking button switch between an initial position and a self-locking position.

[0067] In the present embodiment, the a direction in the Figure 1 The a direction is a circumferential direction, and the arrow direction of the a direction is the rotating direction of the trigger ring 200, and the b direction is an axial direction.

[0068] In the embodiment, in the initial position, the push rod 320 pushes the corresponding supporting plate 210 to make the positioning column 110 disengage from the limiting groove 2101 and rotate to the self-locking groove 2102 corresponding to the positioning column 110 in the axial direction, and under the action of the elastic member 400, the supporting plate 210 moves in the axial direction to the self-locking groove 2102 of the positioning column 110; in the self-locking position, the push rod 320 pushes the supporting plate 210 to make the positioning column 110 disengage from the self-locking groove 2102 and be suitable for being inserted into the limiting groove 2101. In the two switching processes, the impact caused has little effect on the self-locking groove 2102 of the supporting plate 210, effectively preventing the supporting plate 210 from being broken at the self-locking groove 2102.

[0069] In the embodiment, in the initial position, the push rod 320 pushes the corresponding supporting plate 210 to make the positioning column 110 disengage from the limiting groove 2101, and the trigger ring 200 rotates to make the push rod 320 and the side surface of the next supporting plate 210 fit to form a first transition position, and in the first transition position, the elastic member 400 is used to make the push ring 300 drive the trigger ring 200 to move in the axial direction to the self-locking groove 2102 of the positioning column 110 to be placed in the next supporting plate 210.

[0070] In the self-locking position, the push rod 320 pushes the corresponding supporting plate 210 to make the positioning column 110 disengage from the self-locking groove 2102, and the trigger ring 200 rotates to make the push rod 320 be placed in the self-locking groove 2102 of the next supporting plate 210 to form a second transition position, and in the second transition position, the elastic member 400 is used to make the push ring 300 drive the trigger ring 200 to move in the axial direction to the next limiting groove 2101 of the positioning column 110.

[0071] Exemplarily, the trigger ring 200 is in the initial position, i.e., the switch is off, at which time the limiting grooves 2101 of the trigger ring 200 one-to-one correspond to accommodate the positioning columns 110; the pressing pushing ring 300 is slid towards the trigger ring 200, the pushing rod 320 pushes the supporting plate 210 to make the positioning column 110 disengage from the limiting groove 2101, and then the trigger ring 200 is forced to rotate to the side of the pushing rod 320 abutting against the side of the next supporting plate 210, forming a first transition position and limiting the rotation of the trigger ring 200. During the operation from the initial position to the first transition position, the elastic member 400 does not cause impact, the impact caused by the contact between the pushing rod 320 and the supporting plate 210 and the abutment between the side of the supporting plate 210 and the side of the positioning column 110 is small, and the impact has little effect on the self-locking groove 2102 of the supporting plate 210, effectively preventing the supporting plate 210 from being broken at the self-locking groove 2102. When the pushing ring 300 is released, the pushing ring 300 is moved along the axial direction under the action of the elastic member 400, and the trigger ring 200 is driven by the limiting part 310 until the positioning column 110 is placed in the self-locking groove 2102 of the next supporting plate 210, forming a self-locking position, i.e., the switch is on and kept, during which the moving direction of the positioning column 110 before contacting the surface of the self-locking groove 2102 is the axial direction, the impact has little effect on the self-locking groove 2102 of the supporting plate 210, effectively preventing the supporting plate 210 from being broken at the self-locking groove 2102. When the pushing ring 300 is pressed again, the pushing rod 320 pushes the supporting plate 210 to make the positioning column 110 disengage from the self-locking groove 2102, and then the trigger ring 200 is forced to rotate to the pushing rod 320 being placed in the self-locking groove 2102 of the next supporting plate 210, forming a second transition position and limiting the rotation of the trigger ring 200. During the operation, the elastic member 400 does not cause impact, the impact caused by the pushing rod 320 being placed in the self-locking groove 2102 is small, and the impact effectively prevents the supporting plate 210 from being broken at the self-locking groove 2102. When the pushing ring 300 is released again, the pushing ring 300 is moved along the axial direction under the action of the elastic member 400, and the trigger ring 200 is driven by the limiting part 310 until the positioning column 110 is placed in the next limiting groove 2101, and the self-locking groove 2102 of the supporting plate 210 does not collide. The self-locking button switch is switched between the initial position and the self-locking position, effectively preventing abnormal sound and effectively preventing the supporting plate 210 from being broken at the self-locking groove 2102.

[0072] It is worth mentioning that when the pushing ring 300 is switched from the self-locking position to the initial position, the pushing ring 300 is moved along the axial direction under the action of the elastic member 400 and the trigger ring 200 is driven by the limiting part 310, the end of the supporting plate 210 abuts against the end of the positioning column 110, and the positioning column 110 is slid relative to the supporting plate 210 to be placed in the next limiting groove 2101. The contact between the end of the supporting plate 210 and the end of the positioning column 110 has little effect on the self-locking groove 2102 of the supporting plate 210, which can be ignored, effectively preventing the supporting plate 210 from being broken at the self-locking groove 2102 and improving the service life of the self-locking button switch.

[0073] In a feasible implementation, as shown in Figure 2 The positioning column 110 is arranged in the sliding groove 3201 in one-to-one correspondence. The positioning column 110 is arranged in the sliding groove 3201 in one-to-one correspondence in this embodiment, so that the shell 100 can position the push ring 300 in the circumferential direction, and the push ring 300 can slide in the axial direction relative to the shell 100.

[0074] In a feasible implementation, as shown in Figures 2 to 7 The limiting portion 310 is a stepped platform arranged on the inner side of the push ring 300, and one end of the trigger ring 200 is provided with the first hook 220. In the initial position and the self-locking position, the first hook 220 is in abutment with the stepped platform. In the first transition position and the second transition position, a gap is formed between the first hook 220 and the stepped platform in the moving direction of the push ring 300, so that the movement of the push ring 300 and the trigger ring 200 is effectively avoided. It can be understood that, as shown in Figure 2 and Figure 3 When the initial position is switched to the first transition position, the positioning column 110 is separated from the limiting groove 2101 and forces the trigger ring 200 to rotate, and a gap is formed between the first hook 220 and the stepped platform and gradually increases. As shown in Figure 3 and Figure 4 When the first transition position is switched to the self-locking position, the stepped platform will impact the first hook 220 due to the existence of the gap, and accelerate the movement of the trigger ring 200 towards the push ring 300. As shown in Figure 4 and Figure 5 When the self-locking position is switched to the second transition position, the positioning column 110 is separated from the self-locking groove 2102 and forces the trigger ring 200 to rotate, and a gap is formed between the first hook 220 and the stepped platform and gradually increases. When the second transition position is switched to the initial position, the stepped platform will impact the first hook 220 due to the existence of the gap, and accelerate the movement of the trigger ring 200 towards the push ring 300. Therefore, when the elastic member 400 is selected, the elastic coefficient of the elastic member 400 can be reduced.

[0075] Specifically, as shown in Figure 6As shown, one end of the trigger ring 200 extends to form an inner ring portion 230, and a support plate 210 is provided on the outer side of the inner ring portion 230. Multiple first hooks 220 are spaced apart at the end of the inner ring portion 230. The inner ring portion 230 is located inside the push ring 300, and the stepped platform is annular. In this embodiment, the first hooks 220 extend axially through the inner ring portion 230 to protrude from the stepped platform, so that the first hooks 220 are adapted to abut against the stepped platform in the initial and self-locking positions, and to form gaps with the stepped platform in the first and second transition positions. More specifically, multiple stress-relieving grooves 2301 are spaced apart circumferentially at the end of the inner ring portion 230. The stress-relieving grooves 2301 and the hooks are staggered to facilitate the assembly of the trigger ring 200 and the push ring 300.

[0076] In this embodiment, reference is made to Figure 6 As shown, the tray 210 includes a first side surface 211 and a second side surface 212 arranged circumferentially opposite each other. A limiting groove 2101 is formed between adjacent first side surfaces 211 and second side surfaces 212. The end of the tray 210 includes a first inclined surface 213, a self-locking surface 214, and a second inclined surface 215 connected in sequence. Both the first inclined surface 213 and the second inclined surface 215 are inclined towards the bottom of the tray 210 from the first side surface 211 to the second side surface 212. A self-locking groove 2102 is formed between the first inclined surface 213 and the self-locking surface 214. The push rod 320 can abut against the corresponding second inclined surface 215. The first inclined surface 213 can be connected to the first side surface 211, and the second inclined surface 215 can be connected to the second side surface 212.

[0077] Among them, such as Figure 3 As shown, in the first transition position, the side of the push rod 320 fits against the corresponding first side 211, forming a circumferential limit on the trigger ring 200. In the self-locking position, as... Figure 4 As shown, the end of the positioning post 110 abuts against the corresponding first inclined surface 213, and the side of the positioning post 110 fits against the corresponding self-locking surface 214. At the second transition position, as... Figure 5 As shown, the end of the push rod 320 abuts against the corresponding first inclined surface 213, and the side of the push rod 320 fits against the corresponding self-locking surface 214.

[0078] It is understandable that, such as Figure 2 and Figure 3As shown, by switching from the initial position to the first transition position, the end of the push rod 320 first abuts against the second inclined surface 215 of the corresponding supporting plate 210, and pushes the positioning column 110 away from the self-locking surface 214, and under the guidance of the first inclined surface 213, the end of the push rod 320 slides relative to the first inclined surface 213 of the supporting plate 210, and forces the trigger ring 200 to rotate, until the side surface of the push rod 320 abuts against the first side surface 211 of the next supporting plate 210, in this process, the self-locking surface 214 is not directly impacted, effectively preventing the supporting plate 210 from being broken at the junction between the first inclined surface 213 and the self-locking surface 214.

[0079] As can be understood, as shown in Figure 3 and Figure 4 As shown, by switching from the first transition position to the self-locking position, the end of the positioning column 110 first contacts the first inclined surface 213 of the corresponding supporting plate 210, and under the guidance of the first inclined surface 213, the end of the positioning column 110 slides relative to the first inclined surface 213, forcing the trigger ring 200 to rotate and move towards the push ring 300, until the side surface of the positioning column 110 abuts against the self-locking surface 214 of the supporting plate 210. And under the action of the elastic member 400, the push ring 300 makes the trigger ring 200 have a tendency to move towards the push ring 300 through the limiting portion 310, that is, the abutment of the end of the positioning column 110 against the first inclined surface 213 and the abutment of the side surface of the positioning column 110 against the self-locking surface 214 are stable and reliable. In this embodiment, the end of the positioning column 110 first contacts the first inclined surface 213 to absorb the impact, effectively reducing the impact of the side surface of the positioning column 110 on the self-locking surface 214, and the self-locking surface 214 completely abuts against the side surface of the positioning column 110, effectively avoiding stress concentration, thereby effectively preventing the supporting plate 210 from being broken at the junction between the first inclined surface 213 and the self-locking surface 214, and effectively improving the service life of the self-locking button switch. Exemplarily, when or after the side surface of the push rod 320 is separated from the first side surface 211, the end of the positioning column 110 contacts the first inclined surface 213.

[0080] As can be understood, as shown in Figure 4 and Figure 5 As shown, by switching from the self-locking position to the second transition position, the end of the push rod 320 first abuts against the corresponding first inclined surface 213, and pushes the positioning column 110 away from the self-locking surface 214, and under the guidance of the first inclined surface 213, the end of the push rod 320 slides relative to the first inclined surface 213, forcing the trigger ring 200 to rotate, until the side surface of the push rod 320 abuts against the self-locking surface 214 of the next supporting plate 210, the impact is smaller.

[0081] As can be understood, as shown in Figure 1 and Figure 5As shown, the end of the positioning column 110 is first in contact with the second inclined surface 215 of the corresponding supporting plate 210, and then slides relative to the second inclined surface 215 under the guidance of the second inclined surface 215, and the trigger ring 200 rotates and moves towards the pushing ring 300 until the positioning column 110 is placed in the limiting groove 2101, and the self-locking surface 214 is not directly impacted, effectively preventing the supporting plate 210 from being broken at the intersection between the first inclined surface 213 and the self-locking surface 214. Illustratively, the end of the positioning column 110 is in contact with the corresponding second inclined surface 215 when or after the side surface of the push rod 320 is separated from the self-locking surface 214. Illustratively, in the initial position, the end of the positioning column 110 can abut against the groove bottom of the corresponding limiting groove 2101.

[0082] In an implementable embodiment, as shown in Figure 6 Illustratively, the first inclined surface 213 can be provided as a circular arc surface, a plane or a surface of other shapes, which is not specifically limited in the present application.

[0083] In an implementable embodiment, as shown in Figure 6 Illustratively, the second inclined surface 215 can be provided as an arc surface, a plane or a surface of other shapes, which is not specifically limited in the present application.

[0084] In the present embodiment, the first inclined surface 213 is preferably a plane or a concave arc surface, and the second inclined surface 215 is preferably a convex arc surface.

[0085] Illustratively, the first side surface 211 and the first inclined surface 213, the first inclined surface 213 and the self-locking surface 214, the self-locking surface 214 and the second inclined surface 215, and / or the second inclined surface 215 and the second side surface 212 can be chamfered or rounded, respectively, effectively preventing breakage.

[0086] In an implementable embodiment, the included angle a between the first inclined surface 213 and the self-locking surface 214 is ≤ 90°. Preferably, the included angle a between the first inclined surface 213 and the self-locking surface 214 is 90°, so as to ensure compact structure. When the included angle a between the first inclined surface 213 and the self-locking surface 214 is < 90°, the side surface of the corresponding push rod 320 and the side surface of the positioning column 110 can be provided with a concave surface which is in abutment with the self-locking surface 214.

[0087] In an implementable embodiment, the second inclined surface 215 can extend to the groove bottom of the limiting groove 2101, and it can be understood that the second side surface 212 is the second inclined surface 215.

[0088] In the present embodiment, reference is made to Figure 7As shown, the end of the push rod 320 is flat or arc-shaped, which effectively reduces the collision frequency between the push rod 320 and the self-locking groove 2102 when switching between the initial position and the self-locking position of the self-locking button, effectively prevents abnormal sound, and effectively prevents the tray 210 from being broken at the self-locking groove 2102.

[0089] Specifically, the end of the push rod 320 includes a first inclined end face 321, the inclination direction of the first inclined end face 321 is the same as that of the first inclined face 213 and the second inclined face 215, the push rod 320 can abut against the corresponding second inclined face 215 through the first inclined end face 321 to push the tray 210, and the pushing is more smooth. Wherein, as shown in Figure 5 As shown, at the second transition position, the first inclined end face 321 is in contact with the first inclined face 213. In this embodiment, as shown in Figure 4 and Figure 5 As shown, when switching from the self-locking position to the second transition position, the top end region of the first inclined end face 321 first contacts the corresponding first inclined face 213, and as the relative sliding between the first inclined end face 321 and the first inclined face 213, the contact area gradually increases, effectively avoiding stress concentration and preventing the push rod 320 from being broken at the top end region of the first inclined end face 321.

[0090] In this embodiment, as shown in Figure 8 As shown, the end of the positioning column 110 includes a second inclined end face 111, the inclination direction of the second inclined end face 111 is the same as that of the first inclined face 213 and the second inclined face 215, and the inclination of the second inclined end face 111 is greater than or equal to that of the first inclined face 213, to ensure smooth sliding between the second inclined end face 111 and the second inclined face 215 and between the second inclined end face 111 and the first inclined face 213, thereby reducing the pushing force of the pushing ring 300 on the trigger ring 200, and when selecting the elastic member 400, the elastic coefficient of the elastic member 400 can be reduced to reduce the impact.

[0091] In this embodiment, as shown in Figure 9 and Figure 10 As shown, the outer periphery of the pushing ring 300 is provided with a first annular table 330, the housing 100 is provided with a second annular table 120, the elastic member 400 is sleeved on all the push rods 320 and all the positioning columns 110, and the first end of the elastic member 400 abuts against the first annular table 330, and the second end of the elastic member 400 abuts against the second annular table 120, which is compact in structure, facilitates the installation of the elastic member 400, and is reliable and stable in connection. Wherein, the trigger ring 200 is arranged in the second annular table 120.

[0092] In a feasible implementation, the self-locking button switch further comprises a first sealing ring 500, the outer circumferential portion of the first annular table 330 is provided with a sealing groove 3301, and the first sealing ring 500 is arranged in the sealing groove 3301. The first sealing ring 500 can seal the gap between the first annular table 330 and the shell 100, achieve the effects of waterproofing and dustproofing, and improve the overall protection performance of the self-locking button switch.

[0093] In the embodiment, as shown in Figures 9 to 11 The self-locking button switch further comprises a button cap 600, which is arranged in the shell 100 and connected with the pushing ring 300. The button cap 600 is arranged in this way, so that the pushing ring 300 can be pushed towards the trigger ring 200 in a pressing manner.

[0094] In a feasible implementation, in the initial position, the button cap 600 is arranged protruding from or flush with the shell 100; in the self-locking position, the button cap 600 is arranged recessed in the shell 100, so as to facilitate identification of the switch state of the self-locking button switch.

[0095] Specifically, the side of the button cap 600 facing the pushing ring 300 is provided with a plurality of second hooks 610 arranged at intervals in the circumferential direction, and the outer circumferential portion of the pushing ring 300 is provided with a snap ring 340. The plurality of second hooks 610 are clamped with the snap ring 340 to achieve the relative fixation between the button cap 600 and the pushing ring 300 in the axial direction.

[0096] Further specifically, the outer circumferential portion of the snap ring 340 is provided with a plurality of limiting protrusions 341 arranged at intervals in the circumferential direction, and a positioning groove is formed between adjacent limiting protrusions 341. The positioning groove accommodates the second hook 610 one by one, so as to achieve the relative fixation between the button cap 600 and the pushing ring 300 in the circumferential direction.

[0097] In a feasible implementation, a second sealing ring 700 is arranged between the pushing ring 300 and the button cap 600, that is, one side of the second sealing ring 700 is attached to the end portion of the pushing ring 300, the other side of the second sealing ring 700 is attached to the side of the button cap 600 facing the pushing ring 300, and the second sealing ring 700 is located on the inner side of the plurality of second hooks 610. The second hook 610 limits the second sealing ring 700, further achieving waterproofing and dustproofing.

[0098] Embodiment Two

[0099] In the self-locking button switch provided in the embodiment, the end portion of the push rod 320 is different from that in the first embodiment. In the embodiment, as shown in Figure 12As shown, the end of the push rod 320 includes a first inclined surface 322, a first limiting surface 323, a second inclined surface 324, a second limiting surface 325 and a third inclined surface 326 connected in sequence, the first inclined surface 322, the second inclined surface 324 and the third inclined surface 326 have the same inclination direction as the first inclined surface 213 and the second inclined surface 215, and the first limiting surface 323 and the second inclined surface 324 and the second limiting surface 325 and the third inclined surface 326 are zigzag. Figure 13 As shown, in the initial position, the self-locking surface 214 is located between the first limiting surface 323 and the second limiting surface 325 in the circumferential direction.

[0100] As shown in Figure 13 and Figure 14 , from the initial position to the first transition position, first, the first inclined surface 322 pushes against the corresponding first inclined surface 213 and / or the second inclined surface 324 pushes against the corresponding second inclined surface 215, so that the positioning column 110 is separated from the limiting groove 2101; Then, at least one of the first inclined surface 213 and the corresponding first inclined surface 322 and the second inclined surface 215 and the corresponding second inclined surface 324 slides relative to each other, forcing the trigger ring 200 to rotate, until the first limiting surface 323 is in contact with the self-locking surface 214 and / or the side surface connected with the third inclined surface 326 is in contact with the first side surface 211 of the next supporting plate 210.

[0101] As shown in Figure 14 and Figure 15 , from the first transition position to the self-locking position, first, the first limiting surface 323 is separated from the self-locking surface 214 and / or the third inclined surface 326 is separated from the first side surface 211; Then, the first inclined surface 213 is in contact with the end surface of the corresponding positioning column 110; Finally, the positioning column 110 and the first inclined surface 213 slide relative to each other, forcing the trigger ring 200 to rotate and move towards the abutting ring 300, until the self-locking surface 214 is in contact with the side surface of the positioning column 110.

[0102] As shown in Figure 15 and Figure 16 , from the self-locking position to the second transition position, first, the first inclined surface 322 pushes against the corresponding second inclined surface 215, and the self-locking surface 214 is separated from the side surface of the positioning column 110; Then, the first inclined surface 322 and the corresponding second inclined surface 215 slide relative to each other, forcing the trigger ring 200 to rotate, until at least one of the first inclined surface 213 and the third inclined surface 326 of the next push rod 320, the self-locking surface 214 and the side surface of the next push rod 320, and the first side surface 211 and the second limiting surface 325 of the next push rod 320 are in contact. Wherein, the third inclined surface 326 has a yielding effect on the first inclined surface 213.

[0103] As shown in Figure 13 and Figure 16As shown, the second transition position is switched to the initial position, first, the supporting plate 210 is separated from the push rod 320; then, the second inclined surface 215 is in contact with the end surface of the corresponding positioning column 110; finally, the relative sliding between the positioning column 110 and the second inclined surface 215 forces the trigger ring 200 to rotate and move towards the push ring 300 until the positioning column 110 is placed in the limiting groove 2101. Wherein, after the supporting plate 210 is separated from the push rod 320, the trigger ring 200 moves and rotates relative to the push ring 300 under the rapid movement of the trigger ring 200 and the interaction force between the trigger ring 200 and the push ring 300, forming a state as shown in FIG. 4c. Figure 17 As shown in the state, the first limiting surface 323 can collide with the first side surface 211 and / or the second limiting surface 325 can collide with the self-locking surface 214, achieving limiting to prevent the trigger ring 200 from rotating excessively.

[0104] The self-locking button switch provided by the embodiment has the same other structure as that of the first embodiment, and details are not described herein.

[0105] Obviously, the above embodiments of the present application are only examples for clear illustration of the present application, and are not intended to limit the embodiments of the present application. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present application. Here, it is not necessary and impossible to enumerate all the embodiments. Any modification, equivalent substitution and improvement within the spirit and principle of the present application shall be included in the protection scope of the claims of the present application.

Claims

1. A self-locking push button switch characterized by, The utility model relates to a self-locking button mechanism, comprising: a cover (100) with a plurality of positioning columns (110) arranged in a circumferential direction inside the cover (100); a trigger ring (200) slidingly arranged in the cover (100), one end of the trigger ring (200) being provided with a plurality of supporting plates (210) arranged in a circumferential direction, a limiting groove (2101) being formed between adjacent supporting plates (210) for accommodating a corresponding positioning column (110), and an end of the supporting plate (210) being provided with a self-locking groove (2102); a pushing ring (300) slidingly arranged in the cover (100), the pushing ring (300) being provided with a limiting portion (310) for abutting against the trigger ring (200), the trigger ring (200) being capable of rotating relative to the pushing ring (300), and one end of the pushing ring (300) being provided with a plurality of push rods (320) corresponding to the supporting plates (210) in a one-to-one manner; a resilient member (400) arranged between the pushing ring (300) and the cover (100); the pushing ring (300) can be pressed to switch the self-locking button from an initial position to a self-locking position; when switched from the initial position to the self-locking position, the push rod (320) pushes against the corresponding supporting plate (210) to make the positioning column (110) disengage from the limiting groove (2101), and the trigger ring (200) rotates to make the push rod (320) abut against a side surface of the next supporting plate (210) to form a first transition position, at the first transition position, the resilient member (400) is used to make the pushing ring (300) drive the trigger ring (200) to move axially to a position where the positioning column (110) is arranged in the self-locking groove (2102) of the next supporting plate (210); when switched from the self-locking position to the initial position, the push rod (320) pushes against the corresponding supporting plate (210) to make the positioning column (110) disengage from the self-locking groove (2102), and the trigger ring (200) rotates to make the push rod (320) be arranged in the self-locking groove (2102) of the next supporting plate (210) to form a second transition position, at the second transition position, the resilient member (400) is used to make the pushing ring (300) drive the trigger ring (200) to move axially to a position where the positioning column (110) is arranged in the limiting groove (2101) of the next supporting plate (210).

2. The self-locking push button switch according to claim 1, characterized in that An end of the push rod (320) is in a planar or arc shape.

3. The self-locking push button switch according to claim 1, wherein Adjacent push rods (320) form a sliding groove (3201), and the positioning columns (110) are slidingly arranged in the sliding groove (3201) in a one-to-one manner.

4. The self-locking push button switch according to claim 1, wherein The outer periphery of the pushing ring (300) is provided with a first annular table (330), the shell (100) is provided with a second annular table (120), the elastic member (400) is sleeved on all the push rods (320) and all the positioning columns (110), and the first end of the elastic member (400) abuts against the first annular table (330), and the second end of the elastic member (400) abuts against the second annular table (120).

5. The self-locking push button switch according to claim 4, wherein The outer periphery of the first annular table (330) is provided with a sealing groove (3301), and the sealing groove (3301) is provided with a first sealing ring (500).

6. The self-locking push button switch according to claim 1, wherein Further comprising a button cap (600), the button cap (600) is arranged in the shell (100), and is connected with the pushing ring (300); wherein, In the initial position, the button cap (600) is arranged protruding from or flush with the shell (100); In the self-locking position, the button cap (600) is arranged recessed in the shell (100).

7. The self-locking push button switch according to claim 1, wherein The limiting part (310) is a stepped table arranged on the inner side of the pushing ring (300), and one end of the trigger ring (200) is provided with a first hook (220); In the initial position and the self-locking position, the first hook (220) abuts against the stepped table; In the first transition position and the second transition position, a gap is formed between the first hook (220) and the stepped table along the moving direction of the pushing ring (300).

8. The self-locking push button switch according to claim 1, wherein The supporting plate (210) comprises a first side surface (211) and a second side surface (212) arranged opposite in the circumferential direction, the limiting groove (2101) is formed between the adjacent first side surface (211) and second side surface (212), and the end part of the supporting plate (210) comprises a first inclined surface (213), a self-locking surface (214) and a second inclined surface (215) connected in sequence, the first inclined surface (213) and the second inclined surface (215) are both arranged inclined from the first side surface (211) to the second side surface (212) towards the bottom of the supporting plate (210), the self-locking groove (2102) is formed between the first inclined surface (213) and the self-locking surface (214), and the push rod (320) can push the corresponding second inclined surface (215); wherein, In the first transition position, the side surface of the push rod (320) is attached to the corresponding first side surface (211); In the self-locking position, the end part of the positioning column (110) abuts against the corresponding first inclined surface (213), and the side surface of the positioning column (110) is attached to the corresponding self-locking surface (214); In the second transition position, the end part of the push rod (320) abuts against the corresponding first inclined surface (213), and the side surface of the push rod (320) is attached to the corresponding self-locking surface (214).

9. The self-locking push button switch according to claim 8, wherein An end of the push rod (320) comprises a first inclined end surface (321), an inclination direction of the first inclined end surface (321) is same as that of the first inclined surface (213) and the second inclined surface (215), the push rod (320) can abut against the second inclined surface (215) through the first inclined end surface (321) to push the supporting plate (210); wherein, At the second transition position, the first inclined end surface (321) is in contact with the corresponding first inclined surface (213).

10. The self-locking push button switch according to claim 8, wherein An end of the positioning column (110) comprises a second inclined end surface (111), an inclination direction of the second inclined end surface (111) is same as that of the first inclined surface (213) and the second inclined surface (215), and an inclination of the second inclined end surface (111) is greater than or equal to that of the first inclined surface (213).

11. The self-locking push button switch according to claim 8, wherein The first inclined surface (213) is arranged as a circular arc surface or a plane, and the second inclined surface (215) is arranged as a circular arc surface or a plane.

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