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A shrapnel switch and detection device

A technology of shrapnel switch and metal shrapnel, which is applied in the direction of coupling devices, parts of connecting devices, electrical components, etc., can solve the problems of high manufacturing process requirements of detection devices, unreliable loop detection, poor stability, etc., and achieve low cost and reliability High performance and improved stability

Active Publication Date: 2018-07-27
VIVO MOBILE COMM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The embodiment of the present invention provides a shrapnel switch and a corresponding detection device to solve the problems of high manufacturing process requirements, high cost, unreliable loop detection and poor stability of the detection device in the prior art

Method used

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  • A shrapnel switch and detection device
  • A shrapnel switch and detection device
  • A shrapnel switch and detection device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] refer to Figure 5 , shows a schematic structural diagram of an embodiment of a dome switch of the present invention, which may specifically include: a metal base 10 , a first metal pin 20 and a first metal dome 30 . Wherein, the first metal dome 30 may include a first support wall 31, a first contact arm 32 and a first protrusion 33, the first support wall 31 is fixedly connected to one end of the metal base 10; The other end of 10 extends in the direction and is fixedly connected with the first supporting wall 31, and the first contact arm 32 is in pre-press contact with the first metal pin 20; the first protrusion 33 is arranged on the first contact arm 32, wherein, when the second When a protrusion 33 moves under force, the first contact arm 32 is separated from the first metal pin 20 .

[0033]Since the first contact arm 32 is in pre-press contact with the first metal pin 20, and when the first protrusion 33 is forced to move, the first contact arm 32 is separated...

Embodiment 2

[0038] refer to Figure 7 and Figure 8 , shows a schematic structural diagram of another embodiment of a dome switch of the present invention, which may specifically include: a base 40 , a second metal pin 50 and a second metal dome 60 . One end of the base 40 has a first through hole 41, the second metal pin 50 passes through the first through hole 41, and the second metal pin 50 is insulated from the base 40, the second metal dome 60 may include: a second supporting wall 61, the second contact arm 62 and the second protrusion 63, the second support wall 61 is fixedly connected with the end of the base 40 away from the first through hole 41; the second contact arm 62 has the edge of the first through hole 41 along the base 40 One end extends in the direction, and is fixedly connected with the second support wall 61, and the second contact arm 62 is in pre-press contact with the second metal pin 50; the second protrusion 63 is arranged on the second contact arm 62, wherein, ...

Embodiment 3

[0048] refer to Figure 11 , a detection device embodiment of the present invention may specifically include: a first card holder bracket 3, a first card holder 4 and such as Figure 5 Dome switch 1 shown. Wherein, the first card tray bracket 3 is fixedly arranged on the main board 5 of the first electronic device; the first card tray 4 is fixed by the first card tray bracket 3; the shrapnel switch 1 is fixedly arranged on the main board 5 at the tail of the first card tray 4 Wherein, when the first card tray 4 is inserted into the first card tray bracket 3, the first card tray 4 pushes the first convex shell 33 of the shrapnel switch 1 to move a preset distance, such as 0.7mm, between the shrapnel switch 1 and the main board 5 If the circuit is not conducting, it is detected that the first card tray 4 is in the inserted state.

[0049] It can be understood that, in the embodiment of the present invention, the first electronic device can be any electronic device that needs t...

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Abstract

The invention provides a spring switch and a detection apparatus. The spring switch comprises a metal pedestal, a first metal pin and a first metal spring. The first metal spring comprises a first support wall fixedly connected with one end of the metal pedestal, a first contact arm which extends along the direction of the other end of the metal pedestal, is fixedly connected with the first support wall, and is in precompresesd contact with the first metal pin; and a first convex closure arranged on the first contact arm, wherein when the first convex closure moves under a stress effect, and the first contact arm is separated from the first metal pin. According to the invention, a normally-closed spring switch is employed, the stability of the detection apparatus is enhanced, user experience is good, loop detection only involves detection of a loop between the normally-closed spring switch and a mainboard, the loop reliability is not affected by an accumulative tolerance, a manufacturing technology, conductivity of a card holder and the like of the detection apparatus, the reliability is high, and the cost is low.

Description

technical field [0001] The invention relates to the technical field of electronic equipment, in particular to a dome switch and a detection device. Background technique [0002] With the continuous development of consumer electronic equipment, in order to meet the needs of thinner electronic equipment, larger battery capacity, and a metal appearance as much as possible, the form of using a card tray to load and retrieve data cards has been widely used. For example, mobile phones, tablet devices, etc. all use card trays to load SIM (Subscriber Identity Module, customer identification module) cards, T-cards (T-Flash (flash memory) cards, which are very small flash memory cards) and other data cards. . In order to realize the hot-swap function of each data card, a data card detection function is generally designed on the fixed data card reading and writing device. [0003] refer to figure 1 and figure 2 , in the prior art, on the ultra-thin and customized data card fixed r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01H3/38H01R13/703
CPCH01H3/38H01R13/703
Inventor 龙江
Owner VIVO MOBILE COMM CO LTD