Security switch

Abstract

The application provides a security switch and relates to the technical field of the ammeter switch. The security switch comprises a switch shell, a sealing base, a switch piece, an elastic reset piece and a pin. The switch piece is slidably arranged in the switch shell, the top of the switch piece protrudes from the top of the switch shell, and the top of the switch piece is provided with a flexible piece. The pin is embedded in the side wall of the switch shell, the top and the bottom of the pin are both externally extended from the switch shell, the top of the pin is located in the inside of the switch shell, the bottom of the pin is located on the outside of the switch shell, and the top of the pin is provided with an abutting seat for contacting with the switch-on piece. The sealing base is sealingly fixed at the bottom of the switch shell, and the elastic reset piece is located between the sealing base and the switch piece. The technical effect of adapting to different sizes of the shell is achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of meter switch, in particular to a security switch. BACKGROUND

[0002] In the meter such as electric meter, water meter or gas meter, and in the security structure, a protection switch is needed. When private connection line behavior occurs, such as private connection of electric line or electricity stealing, or when the security is damaged, the protection switch will be triggered, so as to make the meter or the security structure power off or alarm.

[0003] However, there is error in the production of the shell of the meter, so that the security switch cannot be perfectly matched when the security switch is installed. There is a situation that the security switch is excessively pressed or the stroke of pressing the security switch is insufficient, so that the security switch cannot work normally. In the prior art, the staff manually adds a thickening pad or cuts the shell of the meter / the security switch to adapt, which is not only difficult to operate, but also can cause the security switch to not work normally.

[0004] Therefore, it is an important technical problem for those skilled in the art to provide a security switch suitable for different sizes of shells. SUMMARY

[0005] The present application aims to provide a security switch to solve the technical problem that the prior art cannot adapt to different sizes of shells.

[0006] In a first aspect, the present application provides a security switch, comprising a switch shell, a sealing base, a switch piece, an elastic reset piece and a pin.

[0007] The switch piece is slidably arranged in the switch shell, and the top of the switch piece protrudes from the top of the switch shell. The top of the switch piece is provided with a flexible piece, and the top of the switch shell is provided with a control hole for the switch piece to protrude.

[0008] The pin is embedded in the side wall of the switch shell, and the top and bottom of the pin are both externally extended from the switch shell. The top of the pin is located in the interior of the switch shell, and the bottom of the pin is located on the outside of the switch shell. The top of the pin is provided with an abutting seat for contacting the switch piece.

[0009] The sealing base is sealingly fixed at the bottom of the switch shell, and the elastic reset piece is located between the sealing base and the switch piece.

[0010] In combination with the first aspect, the present application provides a possible implementation manner of the first aspect, wherein the flexible piece comprises a flexible sealing cap.

[0011] The top of the switch housing is provided with a sealing convex ring, the control hole is located in an area surrounded by the sealing convex ring, and the flexible part can abut against the sealing convex ring when the switch part moves downward.

[0012] With reference to the first aspect, in a possible implementation of the first aspect, the flexible part further includes a threaded spring.

[0013] The threaded spring is arranged on the flexible sealing cap, and the flexible sealing cap is provided with a connecting seat for mounting the threaded spring.

[0014] With reference to the first aspect, in a possible implementation of the first aspect, the flexible part is a threaded spring.

[0015] With reference to the first aspect, in a possible implementation of the first aspect, the switch part includes an upper driving part, a lower fixed seat and a contact spring piece.

[0016] The upper driving part is detachably connected with the lower fixed seat, and the top of the upper driving part can extend out of the control hole.

[0017] The contact spring piece is arranged between the upper driving part and the lower fixed seat.

[0018] With reference to the first aspect, in a possible implementation of the first aspect, the upper driving part includes a driving rod and a pressing seat for pressing the contact spring piece against the lower fixed seat.

[0019] The pressing seat is arranged at the bottom of the driving rod, the pressing seat is provided with a buckle, and the lower fixed seat is provided with a clamping groove for clamping the buckle.

[0020] With reference to the first aspect, in a possible implementation of the first aspect, the top of the driving rod is provided with a mounting ring groove for mounting the flexible part.

[0021] With reference to the first aspect, in a possible implementation of the first aspect, the pressing seat is provided with a positioning pin, and the lower fixed seat is provided with a first positioning hole matched with the positioning pin.

[0022] With reference to the first aspect, in a possible implementation of the first aspect, the contact spring piece is provided with a second positioning hole matched with the positioning pin.

[0023] With reference to the first aspect, the present application provides a possible implementation manner of the first aspect, wherein the contact spring piece comprises a pressure bearing plate and a first contact piece capable of abutting against the pin.

[0024] The pressure bearing plate and the first contact piece are both in L shape, the pressure bearing plate is located between the upper driving member and the lower fixed seat, the first contact piece is located outside the lower fixed seat, and the first contact piece is located below the pressure bearing plate.

[0025] The pressure bearing plate is provided with a second contact piece capable of abutting against the pin.

[0026] The pressure bearing plate is provided with the second positioning hole.

[0027] Beneficial effects:

[0028] The present application provides a security switch, comprising a switch shell, a sealing base, a switch piece, an elastic reset piece and a pin; the switch piece is slidably arranged in the switch shell, and the top of the switch piece protrudes from the top of the switch shell; the top of the switch piece is provided with a flexible piece, and the top of the switch shell is provided with a control hole for the switch piece to extend out; the pin is embedded in the side wall of the switch shell, and the top and bottom of the pin both extend out of the switch shell; the top of the pin is located in the inside of the switch shell, and the bottom of the pin is located outside the switch shell; the top of the pin is provided with an abutting seat for contacting the switch piece; the sealing base is sealingly fixed at the bottom of the switch shell, and the elastic reset piece is located between the sealing base and the switch piece.

[0029] Specifically, when the security switch is used, the switch piece will be pressed inward, so that the switch will be separated from the pin; during the inward pressing of the switch piece, the flexible piece arranged on the switch piece will move downward, so that the switch piece in the switch shell can be separated from the pin; and the flexible piece can continue to shrink as the watch shell continues to press the flexible piece, and the switch piece cannot continue to move downward, avoiding damage to the switch piece; in addition, when the size of the watch shell cover is large after being closed, the flexible piece can still be pressed to ensure that the switch piece in the switch shell can be separated from the pin, so that the security switch can adapt to different watch shells. BRIEF DESCRIPTION OF DRAWINGS

[0030] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiments or prior art description. Obviously, the drawings in the following description are some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0031] Figure 1A schematic diagram of a security switch provided in an embodiment of the present invention;

[0032] Figure 2 This is a half-sectional schematic diagram of a security switch provided in an embodiment of the present invention;

[0033] Figure 3 This is a schematic diagram of the switching component, sealing base, spring reset component, and pins in the security switch provided in an embodiment of the present invention;

[0034] Figure 4 This is a schematic diagram of the upper drive component in a security switch provided in an embodiment of the present invention;

[0035] Figure 5 This is a schematic diagram of the lower fixing base, elastic reset component, pins, and sealing base in a security switch provided in an embodiment of the present invention.

[0036] Figure 6 A schematic diagram showing that the flexible component of the security switch provided in this embodiment of the invention uses a spring;

[0037] Figure 7 for Figure 6 Cross-sectional view of the flexible component and drive rod;

[0038] Figure 8 A schematic diagram of a first embodiment of a security switch using a flexible sealing cap and a spring, provided by an embodiment of the present invention;

[0039] Figure 9 for Figure 8 Cross-sectional view of the flexible component and drive rod;

[0040] Figure 10 A schematic diagram illustrating a second embodiment of the flexible component in a security switch, which employs a flexible sealing cap and a spring, provided by an embodiment of the present invention;

[0041] Figure 11 for Figure 10 Cross-sectional view of the flexible component and drive rod.

[0042] icon:

[0043] 100 - Switch housing; 101 - Control hole; 110 - Sealing ring;

[0044] 200 - Sealed base; 210 - Guide post;

[0045] 300-Switch element; 310-Upper drive element; 311-Drive rod; 312-Pressure seat; 313-Snap-fit; 314-Mounting ring groove; 315-Positioning pin; 320-Lower fixed seat; 321-Slot; 322-First positioning hole; 330-Contact spring; 331-Second positioning hole; 332-Pressure plate; 333-First contact piece; 334-Second contact piece;

[0046] 400 - elastic return member;

[0047] 500 - pin; 510 - abutment seat;

[0048] 600 - flexible member; 610 - flexible sealing cap; 620 - connecting seat; 630 - threaded spring. DETAILED DESCRIPTION

[0049] The technical solutions of the present application will be described in detail below with reference to the drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0050] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0051] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise explicitly specified and limited.

[0052] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral; it can be mechanical connection, or electrical connection; it can be directly connected, or 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.

[0053] The present application will be described in further detail below through specific embodiments and in conjunction with the drawings.

[0054] Reference is made to Figure 1, Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, this embodiment of the invention provides a security switch, including a switch housing 100, a sealing base 200, a switch element 300, a spring-loaded reset element 400, and pins 500. The switch element 300 is slidably disposed within the switch housing 100, and the top of the switch element 300 protrudes beyond the top of the switch housing 100. A flexible element 600 is provided on the top of the switch element 300. A control hole 101 for the switch element 300 to extend is provided on the top of the switch housing 100, and a sealing ring 110 is provided on the top of the switch housing 100. The control hole 101 is located within the area enclosed by the sealing ring 110. When the switch 300 moves downward, the flexible member 600 can abut against the sealing protrusion 110; the pin 500 is embedded in the side wall of the switch housing 100, and the top and bottom of the pin 500 extend out of the switch housing 100. The top of the pin 500 is located inside the switch housing 100, and the bottom of the pin 500 is located outside the switch housing 100. The top of the pin 500 is provided with an abutment seat 510 for contacting the switch 300; the sealing base 200 is sealed and fixed to the bottom of the switch housing 100, and the elastic reset member 400 is located between the sealing base 200 and the switch 300.

[0055] Among them, see Figure 1 As shown, the flexible element 600 includes a flexible sealing cap 610; a sealing protrusion 110 is provided on the top of the switch housing 100, and the control hole 101 is located within the area enclosed by the sealing protrusion 110. When the switch element 300 moves downward, the flexible element 600 can abut against the sealing protrusion 110. See also Figure 8 , Figure 9 , Figure 10 and Figure 11 As shown, the flexible component 600 also includes a threaded spring 630; the threaded spring 630 is disposed on the flexible sealing cap 610, and the flexible sealing cap 610 is provided with a connecting seat 620 for mounting the threaded spring 630. The flexible component 600 can use the flexible sealing cap 610 alone, or it can use a combination of the flexible sealing cap 610 and the threaded spring 630.

[0056] See Figure 6 and Figure 7 As shown, the flexible component 600 can be made of a threaded spring 630 alone.

[0057] It should be noted that the flexible member 600 can be deformed under pressure and accumulate elastic potential energy, and when the flexible member 600 is not externally pressed, the flexible member 600 can release the accumulated elastic potential energy to return to its original state. Among them, the flexible sealing cap 610 can be made of materials such as silicone, rubber, or latex; the flexible member 600 can also be made of a spring, and the spring can cooperate with the flexible sealing cap 610, or the spring can cooperate with the threaded spring 630, or the spring, the flexible sealing cap 610 and the threaded spring 630 are used together. In addition, those skilled in the art can also select the specific way of the flexible member 600 according to the actual needs, as long as it can guarantee that the flexible member 600 can be deformed under pressure and accumulate elastic potential energy, and when the flexible member 600 is not externally pressed, the flexible member 600 can release the accumulated elastic potential energy to return to its original state.

[0058] Specifically, when the security switch is used, the switch member 300 will be pressed inward, so that the switch will be separated from the pin 500, and during the inward pressing of the switch member 300, the flexible member 600 arranged on the switch member 300 will move downward, and the flexible member 600 can abut against the sealing convex ring 110 at the top of the switch housing 100, and the sealing convex ring 110 will be pressed into the flexible member 600, thereby ensuring the sealing at the control hole 101. The sealing base 200 is sealingly arranged at the bottom of the switch housing 100, and through such arrangement, the sealing of the switch housing 100 is completed, avoiding the entry of moisture or water into the inside of the switch housing 100. In addition, when the flexible member 600 moves downward, the switch member 300 in the switch housing 100 can be separated from the pin 500, and as the watch housing continues to press the flexible member 600, the flexible member 600 can continue to contract, and the switch member 300 is prevented from continuing to move downward, avoiding the switch member 300 from being damaged. In addition, through the arrangement of the flexible member 600, when the size of the watch housing is large after being closed, the flexible member 600 can still be pressed to ensure that the switch member 300 in the switch housing 100 can be separated from the pin 500, so that the security switch can adapt to different watch housings.

[0059] Among them, the sum of the length of the flexible member 600 and the length of the switch housing 100 is greater than the height of the watch housing for accommodating the security switch after being closed, so that when the watch housing has a production error, the normal work of the security switch can be ensured through the arrangement of the flexible member 600.

[0060] Among them, the electric meter, water meter, gas meter, etc. are all watch.

[0061] Among them, when the electric meter is opened, the pressure applied by the electric meter box on the switch member 300 disappears, and the switch member 300 moves upward under the action of the reset spring, so that the switch member 300 contacts the pin 500, thereby conducting the specified pin 500, so that the alarm in the electric meter is triggered, or the remote alarm in the electric meter can be triggered.

[0062] The sealing ring 110 and the switch housing 100 can be an integral structure and can be produced together by injection molding.

[0063] The switch housing 100 has four pins 500. The middle part of each pin 500 is embedded in the switch housing 100. The top of each pin 500 extends into the interior of the switch housing 100, and the bottom of each pin 500 extends out of the switch housing 100, so that the bottom of each pin 500 can be soldered to the circuit board inside the meter.

[0064] The elastic reset component can be a spring, disc spring, or torsion spring, etc.

[0065] It should be noted that the use of flexible component 600 allows the security switch provided in this embodiment to be adapted to digital meters or security structures of different models and sizes. For example, when there are tolerances or dimensional errors between the digital meter and the security structure, when the housing of the digital meter is closed, the housing will compress the flexible component 600. The compression of the flexible component 600 eliminates the tolerances or dimensional errors between the digital meter and the security structure. For example, if the housing of the digital meter has a small error due to the manufacturing process, the digital meter can be closed by pressing the flexible component 600, and the flexible component 600 can be pressed more tightly to increase the pre-tightening force of the seal.

[0066] Furthermore, when the flexible member 600 contacts the upper surface of the switch housing 100, the switch member 300 is not compressed to its lowest position, so as to ensure that the switch member 300 can continue to move downward when the flexible member 600 is further compressed. However, when the flexible member 600 contacts the upper surface of the switch housing 100, the contact spring 330 on the switch member 300 separates from the pin 500.

[0067] The switch housing 100 and the sealing base 200 can be connected together by ultrasonic welding.

[0068] See Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, in an optional embodiment, the switch 300 includes an upper drive member, a lower fixed base 320, and a contact spring 330; the upper drive member is detachably connected to the lower fixed base 320, and the top of the upper drive member can extend out from the control hole 101; the contact spring 330 is disposed between the upper drive member and the lower fixed base 320.

[0069] Specifically, the contact spring 330 is fixed on the upper driving member and the lower fixing base 320. During assembly, the contact spring 330 is first placed on the lower fixing base 320, and then the upper driving member is fixed on the lower fixing base 320, so as to fix the contact spring 330.

[0070] Referring to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 , in an optional embodiment of the present embodiment, the upper driving member comprises a driving rod 311 and a pressing base 312 for pressing the contact spring 330 against the lower fixing base 320; the pressing base 312 is arranged at the bottom of the driving rod 311, and the pressing base 312 is provided with a buckle 313, and the lower fixing base 320 is provided with a clamping groove 321 for clamping the buckle 313.

[0071] Specifically, the upper driving member and the lower fixing base 320 are clamped, and specifically, the pressing base 312 of the upper driving member is provided with a buckle 313, and the lower fixing base 320 is provided with a clamping groove 321.

[0072] Referring to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 , in an optional embodiment of the present embodiment, the top of the driving rod 311 is provided with a mounting ring groove 314 for mounting the flexible member 600.

[0073] Specifically, the top of the driving rod 311 is provided with a mounting ring groove 314, and the flexible member 600 is provided with a ring-shaped protrusion, and the flexible member 600 is clamped on the top of the driving rod 311.

[0074] Referring to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 , in an optional embodiment of the present embodiment, the pressing base 312 is provided with a positioning pin 315, and the lower fixing base 320 is provided with a first positioning hole 322 matched with the positioning pin 315. The contact spring 330 is provided with a second positioning hole 331 matched with the positioning pin 315.

[0075] Specifically, the pressing base 312 is provided with a positioning pin 315, the lower fixing base 320 is provided with a first positioning hole 322, and the contact spring 330 is provided with a second positioning hole 331 matched with the positioning pin 315. Through such arrangement, the contact spring 330 can be further fixed, and the contact spring 330 can be kept at a set position.

[0076] Referring to Figure 1 ,Figure 2 、 Figure 3 、 Figure 4 and Figure 5 As shown in

[0077] Specifically, the contact spring 330 is arranged on the lower fixing base 320, the pressure plate 332 of the contact spring 330 is located on the lower fixing base 320, the first contact piece 333 is located on the side wall of the lower fixing base 320, and the first contact piece 333 is located below the pressure plate 332. Through such an arrangement, the service life of the contact spring 330 can be improved. The spring in the prior art is upward, that is, the first contact piece 333 is arranged above the pressure plate 332. Such an arrangement in the prior art is prone to cause the spring to be in contact with the inner wall of the shell during use, so that the spring cannot move up and down normally. Therefore, even if the first contact piece 333 of the security switch provided in the embodiment is warped, the first contact piece 333 can still be in contact with the pin 500.

[0078] In addition, the second contact piece 334 is arranged on the pressure plate 332, and the first contact piece 333 and the second contact piece 334 can be in contact with the pin 500 when the pin 500 is in contact with the first contact piece 333.

[0079] As shown in Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5 Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 In an optional embodiment of the present embodiment, the bottom of the lower fixing base 320 is provided with a mounting groove, one end of the elastic reset member 400 is inserted into the mounting groove, and the other end is in contact with the sealing base 200. The sealing base 200 is provided with a guide column 210, and the other end of the elastic reset member 400 away from the mounting groove is sleeved on the guide column 210.

[0080] Specifically, the mounting groove is arranged at the bottom of the lower fixing base 320, the guide column 210 is arranged on the sealing base 200, one end of the elastic reset member 400 is inserted into the mounting groove, and the other end is arranged on the guide column 210, so as to constrain the elastic reset member 400 and avoid the elastic reset member 400 from falling off.

[0081] The present embodiment provides an electric meter comprising a security switch.

[0082] Specifically, the electric meter provided by the embodiment has the advantages of the security switch described above compared with the prior art, and will not be described here.

[0083] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A security switch, characterized by The utility model relates to a switch, including: Switch shell (100), sealing base (200), switch piece (300), elastic reset piece (400) and pin (500); The switch piece (300) is slidably arranged in the switch shell (100), and the top of the switch piece (300) protrudes from the top of the switch shell (100), the top of the switch piece (300) is provided with flexible piece (600), the top of the switch shell (100) is provided with control hole (101) for the switch piece (300) to extend out; The pin (500) is embedded in the side wall of the switch shell (100), and the top and bottom of the pin (500) are both externally extended to the switch shell (100), the top of the pin (500) is located in the inside of the switch shell (100), the bottom of the pin (500) is located on the outside of the switch shell (100), the top of the pin (500) is provided with abutting seat (510) for being contacted with the switch piece (300); The sealing base (200) is sealingly fixed at the bottom of the switch shell (100), and the elastic reset piece (400) is located between the sealing base (200) and the switch piece (300); The flexible piece (600) includes flexible sealing cap (610), the top of the switch shell (100) is provided with sealing convex ring (110), the control hole (101) is located in the area surrounded by the sealing convex ring (110), and the flexible piece (600) can abut against the sealing convex ring (110) when the switch piece (300) moves downwards; The flexible piece (600) further includes threaded spring (630), the threaded spring (630) is arranged on the flexible sealing cap (610), and the flexible sealing cap (610) is provided with connecting seat (620) for mounting the threaded spring (630).

2. The security switch according to claim 1, wherein, The flexible piece (600) adopts the threaded spring (630).

3. The security switch of claim 1, wherein, The switch piece (300) includes upper driving part, lower fixed seat (320) and contact spring piece (330); The upper driving part is detachably connected with the lower fixed seat (320), and the top of the upper driving part can extend out of the control hole (101); The contact spring piece (330) is arranged between the upper driving part and the lower fixed seat (320).

4. The security switch of claim 3, wherein, The upper driving part includes driving rod (311) and pressing seat (312) for pressing the contact spring piece (330) against the lower fixed seat (320); The pressing seat (312) is arranged at the bottom of the driving rod (311), the pressing seat (312) is provided with buckle (313), and the lower fixed seat (320) is provided with clamping groove (321) for clamping the buckle (313).

5. The security switch of claim 4, wherein, The top of the driving rod (311) is provided with mounting ring groove (314) for mounting the flexible piece (600).

6. The security switch of claim 4, wherein, The pressing seat (312) is provided with a positioning pin (315), and the lower fixing seat (320) is provided with a first positioning hole (322) matched with the positioning pin (315).

7. The security switch of claim 6, wherein, The contact spring (330) is provided with a second positioning hole (331) matched with the positioning pin (315).

8. The security switch of claim 7, wherein, The contact spring (330) comprises a pressure bearing plate (332) and a first contact piece (333) capable of abutting against the pin (500). The pressure bearing plate (332) and the first contact piece (333) are both connected in an L shape, the pressure bearing plate (332) is located between the upper driving member and the lower fixing seat (320), the first contact piece (333) is located outside the lower fixing seat (320), and the first contact piece (333) is located below the pressure bearing plate (332). The pressure bearing plate (332) is provided with a second contact piece (334) capable of abutting against the pin (500). The pressure bearing plate (332) is provided with the second positioning hole (331).

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