CN108227008B - Metal card tray detection device - Google Patents

Abstract

The invention discloses a metal card support detection device, which comprises a detection module and a magnet, wherein the detection module comprises a detection unit, an indication unit and a magnetic switch, the detection unit is electrically connected with the indication unit through the magnetic switch, when the magnetic switch is in an open state or a closed state, the indication unit gives different indication information, the magnet is in a sliding arrangement, the magnet and the magnetic switch are in a relative arrangement, and a certain distance is reserved between the magnet and the magnetic switch; when a metal card support is arranged in the clamping groove during detection, the metal card support attracts the magnet to slide and approach the magnetic switch, the magnetic switch is closed, and the indicating unit gives indicating information of the metal card support; when no metal card support exists in the clamping groove, the magnet does not slide and maintains a static state, the magnetic switch is disconnected, and the indicating unit gives indicating information of no metal card support; therefore, the indication unit can effectively and accurately give the indication information whether the electronic equipment has the metal card support or not, and the detection result is accurate, reliable, rapid and convenient.

Description

Metal card tray detection device

technical field

The invention relates to a quality inspection device for electronic equipment, in particular to a metal card tray detection device for detecting the state of a metal card tray of electronic equipment.

Background technique

With the rapid development of electronic equipment, especially the rapid development of mobile communication technology and equipment, in order to meet people's needs for electronic equipment, especially portable mobile terminals, to be thinner and easier to operate, more and more mobile terminals use independent The card tray is installed with SIM (Subscriber Identification Module, customer identification module) card, SD (Secure Digital Memory, Secure Digital Memory) card, etc. In the production of mobile terminals, all mobile terminals have their own card trays, so that users can directly install the card after purchase; in the actual production process, occasionally there is no card tray installed on the shipped products. , In view of this phenomenon, there is no special device for detection in the industry; at the same time, due to the high integration of automated production, if manual inspection is used, the work is difficult, and the human objective factor is large, and the accuracy of the inspection cannot be completely guaranteed. Therefore, many manufacturers ignore the sub-link and leave it to the subsequent detection of whether the tray is faulty, which greatly causes waste in the production process; for example, the Chinese invention patent application number is: CN201610910697.5, The name is: A card tray detection method and device, which discloses a method and device for detecting whether a card tray has a fault. The premise of the detection is that a card tray is assumed to be installed in the product, and there is no card tray in the product. The result will not be known until this link, which results in a waste of resources in the previous processes, and may even cause serious technical problems that the product cannot be re-installed with the tray, which in turn leads to the product being scrapped.

Therefore, there is an urgent need for a metal card tray detection device that can effectively, quickly and accurately detect whether an electronic device is equipped with a card tray.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a metal card tray detection device that can effectively, quickly and accurately detect whether an electronic device is equipped with a card tray.

In order to achieve the above purpose, the present invention provides a metal card tray detection device for detecting whether there is a metal card tray in a card slot of an electronic device, the metal card tray detection device includes a detection module and a magnet, and the detection module includes a A detection unit, an indication unit and a magnetic switch, the detection unit and the indication unit are electrically connected by the magnetic switch, and the indication unit gives different indications when the magnetic switch is open or closed information; the magnet is arranged in a sliding manner, the magnet and the magnetic switch are arranged opposite to each other and there is a certain distance between them, the sliding of the magnet changes the magnetic force between the magnet and the magnetic switch, and the magnetic force The change of the magnetic switch triggers the magnetic switch to be open or closed; the card slot of the electronic device is located between the magnet and the magnetic switch; when there is a metal card tray in the card slot, the metal card tray attracts the The magnet slides and approaches the magnetic switch, so that the magnetic switch is closed, and the indicating unit gives the indication information of the metal card holder; when there is no metal card holder in the card slot, the magnet does not slide and maintains a static state , the magnetic switch is disconnected, and the indication unit gives indication information that there is no metal card tray.

Compared with the prior art, when the card slot of the electronic device is located between the magnet and the magnetic switch, when there is a metal card holder in the card slot, the metal card holder is positioned in the card slot of the electronic device and cannot move, so the metal card holder cannot move. The card tray attracts the slidable magnet to slide (ie move) towards itself, while the metal card tray is located between the magnet and the magnetic switch, so the slidable magnet slides in the direction of the metal card tray, that is, the magnet gradually approaches the magnetic switch , the sliding of the magnet in the direction close to the magnetic switch will increase the magnetic force between the magnet and the magnetic switch, and the increase in the magnetic force will trigger the magnetic switch to be closed, and then the indicating unit will give the indication information that there is a metal card tray; When there is no metal card tray, the distance between the magnet and the magnetic switch does not change, the magnet does not slide and maintains a static state, so the magnetic force between the magnet and the magnetic switch does not change, the magnetic switch is disconnected, and the indicator unit indicates that there is no metal card. Indication information of the holder; if the detected electronic device has a metal card holder, after the detection is completed, after removing the detected electronic device, since there is no metal card holder to attract the magnet, the attractive force given by the magnetic switch to the magnet is not enough The magnet is maintained at the position where there was a metal card holder before. Under the action of gravity, the magnet will slide away from the magnetic switch, and the sliding of the magnet away from the magnetic switch will reduce the magnetic force between the magnet and the magnetic switch, and the magnetic force will decrease. A small change will trigger the magnetic switch to turn off, so that the next electronic device can be detected; it is worth noting that in the standby state, when there is no metal card tray in the card slot of the electronic device and no electronic device is detected ( When the electronic device is not detected, of course, there is no metal card tray), and the indication unit gives the indication information of no metal card tray; it can be seen from the above that the application changes the magnetic force of the magnet and the magnetic switch by the sliding of the magnet, and then the magnetic force The change triggers the magnetic switch to be open or closed, so that the indicating unit gives the indication information of whether there is a metal card holder, the structure is simple and the design is reasonable; at the same time, the application only needs to set the card slot of the electronic device between the magnet and the magnetic card holder. Between the switches, the indication unit can effectively and accurately give indication information of whether the electronic device has a metal card tray, and the detection result is accurate, reliable, fast and convenient.

Preferably, the indicating unit of the metal card tray detection device of the present invention includes a first indicator and a second indicator, when the first indicator is lit, it gives the indication information of the metal card tray, and the second indicator When the indicator lights up, it gives an indication that there is no metal tray.

Preferably, the detection unit of the metal card tray detection device of the present invention is a relay.

Preferably, the metal card tray detection device of the present invention further includes a positioning plate, and the positioning plate is provided with a positioning block for fixing the electronic device.

Preferably, the metal card tray detection device of the present invention further comprises a mounting piece, the mounting piece is arranged on the positioning plate, and the magnetic switch is arranged on the mounting piece.

Preferably, the magnet of the metal card tray detection device of the present invention is slidably arranged on the mounting member.

Preferably, the mounting member of the metal card tray detection device of the present invention is provided with an inclined sliding hole, and the magnet is slidably arranged in the sliding hole.

Preferably, the sliding hole of the metal card tray detection device of the present invention is closed at both ends.

Preferably, the metal card tray detection device of the present invention further includes a hole plug, the hole plug is detachably inserted at the end opening of the sliding hole, and the sliding hole is inserted through the hole plug. and closed.

Preferably, the magnetic switch of the metal card tray detection device of the present invention is located directly above the sliding hole, and the longitudinal direction of the magnetic switch and the projection of the longitudinal direction of the sliding hole on the horizontal plane are orthogonal.

Description of drawings

FIG. 1 is a schematic structural diagram of a metal card tray detection device of the present invention.

FIG. 2 is a schematic plan view of the structure of FIG. 1 .

FIG. 3 is a schematic cross-sectional structure diagram taken along line AA in FIG. 2 .

Figure 4a is a block diagram of the working principle of the present invention.

Fig. 4b is a circuit block diagram when the present invention adopts a relay.

FIG. 5 is a schematic structural diagram of the state of the magnet in the sliding hole when the detected electronic device has a metal card tray.

FIG. 6 is a schematic structural diagram of the state of the magnet in the sliding hole when the detected electronic device has no metal tray.

Detailed ways

Embodiments of the present invention will now be described with reference to the accompanying drawings, in which like reference numerals represent like elements.

As shown in FIGS. 1-4b, the metal card tray detection device 100 of the present invention is used to detect whether there is a metal card tray in a card slot of an electronic device. The metal card tray detection device includes a detection module 10 and a magnet 20. The detection module 10 includes a detection unit 11, an indication unit 12 and a magnetic switch 13. The detection unit 11 and the indication unit 12 are electrically connected by the magnetic switch 13. When the magnetic switch 13 is open or closed, the indication unit 12 gives different indications information, that is, when the magnetic switch 13 is in an open state, the indicating unit 12 gives one indication information, and when the magnetic switch 13 is in a closed state, the indicating unit 12 gives another indication information, and the indicating unit 12 can set two indicating devices to Indicate the open and closed state respectively; the open state and closed state can also be indicated by the change of the indication characteristics of an indicator, such as an indicator that can change color, red means open state, green means closed state , or an indicator capable of fast flashing and slow flashing, fast flashing means disconnected state, slow flashing means closed state; about the indication unit 12 that can give different indication information, those skilled in the art can It can be used from many existing indicators without any creative work, which will not be listed here. The magnet 20 of the present invention is arranged in a sliding manner, that is, the magnet 20 can be moved by force, and the magnet 20 and the magnetic switch 13 are arranged opposite to each other and there is a certain distance between them, the sliding of the magnet 20 will change the magnetic force between the magnet 20 and the magnetic switch 13, and the change of the magnetic force between the magnet 20 and the magnetic switch 13 will trigger the magnetic switch 13 to open or close. Specifically, when it is not working, the magnet 20 is in a static state, and the magnetic force between it and the magnetic switch 13 does not change. At this time, the magnetic switch 13 is in a disconnected state; when the magnet 20 slides toward the direction of the magnetic switch 13, the two The distance between them becomes smaller, the magnetic force increases, and the magnetic switch 13 will change from the open state to the closed state; on the contrary, when the magnetic switch 13 is in the closed state, when the magnet 20 slides away from the magnetic switch 13, the distance between the two becomes larger, the magnetic force decreases, and the magnetic switch 13 will change from a closed state to an open state; during detection, the card slot of the electronic device is located between the magnet 20 and the magnetic switch 13; when there is a metal card in the card slot of the detected electronic device The metal card tray will attract the magnet 20 when it is supported, and the magnet 20 will slide and approach the magnetic switch 13 due to the attraction of the metal card tray positioned in the card slot, so that the magnetic switch 13 is closed. At this time, the indicating unit 12 gives There is indication information of the metal card tray; when there is no metal card tray in the card slot of the detected electronic device, the magnet 20 does not slide and maintains a static state, the magnetic switch 13 is maintained in a disconnected state, and the indicating unit 12 gives an indication of no metal card tray. Instructions.

It is worth noting that the distance between the magnet 20 and the magnetic switch 13 of the present invention should be understood as, when there is no detection or when there is no metal tray between the magnet 20 and the magnetic switch 13, the magnetic force of the magnetic switch 13 to the magnet 20 cannot be Make the magnet 20 slide; and when there is a metal card holder between the magnet 20 and the magnetic switch 13, the metal card holder will attract the magnet 20 to slide and approach the magnetic switch 13. The magnetic force cannot keep the magnet 20 at the current position. Under the action of the magnet 20's own gravity, the magnet will slide to the position without the metal tray.

It can be seen from the above that during detection, since the card slot of the electronic device is located between the magnet 20 and the magnetic switch 13, when there is a metal card tray in the detected card slot of the electronic device, the metal card tray is positioned in the card slot of the electronic device. can not move inside, so the metal card tray attracts the slidable magnet 20 to slide (ie move) in its own direction, and the metal card tray is located between the magnet 20 and the magnetic switch 13, so the slidable magnet 20 will move towards the metal card tray. Sliding in the direction of the magnet 20, that is, the magnet 20 is gradually approaching the magnetic switch 13, and the sliding of the magnet 20 in the direction of approaching the magnetic switch 13 will increase the magnetic force between the magnet 20 and the magnetic switch 13 (the state shown in FIG. 5). The trigger magnetic switch 13 is changed from the open state to the closed state, and then the indication unit 12 gives the indication information that there is a metal card tray; when there is no metal card tray in the card slot of the detected electronic device, the magnet 20 and the magnetic switch 13 are connected. The distance does not change, the magnet 20 does not slide and maintains a static state (the state shown in FIG. 6 ), so the magnetic force between the magnet 20 and the magnetic switch 13 does not change, the magnetic switch 13 is disconnected, and the indicator unit 12 gives no metal Indication information of the card tray; if the detected electronic device has a metal card tray, after the detection is completed, after removing the detected electronic device, since there is no metal card tray to attract the magnet 20, the magnetic switch 13 gives the magnet 20 an attraction The force is not enough to keep the magnet 20 at the position where the metal card holder was placed before. Under the action of gravity, the magnet 20 will slide in the direction away from the magnetic switch 13, and the sliding of the magnet 20 in the direction away from the magnetic switch 13 will reduce the size of the magnet. 20 and the magnetic force of the magnetic switch 13, the change in the reduction of the magnetic force will trigger the magnetic switch 13 to change from the closed state to the open state, so that the detection of the next electronic device can be performed; it is worth noting that in the standby state, when the electronic device When there is no metal card tray in the card slot and no electronic device is detected (when the electronic device is not detected, of course, there is no metal card tray), the instruction unit 12 gives the instruction information of no metal card tray; The magnetic force of the magnet 20 and the magnetic switch 13 is changed by the sliding of the magnet 20, and then the change of the magnetic force triggers the magnetic switch 13 to be opened or closed, so that the indicating unit 12 gives the indication information of whether there is a metal card tray, and the structure is simple and designed. Reasonable; at the same time, the application only needs to set the card slot of the electronic device between the magnet and the magnetic switch, and the indicator unit 12 can effectively and accurately give the indication information of whether the electronic device has a metal card tray, and the detection result is accurate , reliable and fast and convenient.

It is worth noting that the electronic devices detected by the metal card tray detection device 100 of the present invention mainly include mobile terminals, tablets, portable computers, audio-visual equipment, set-top boxes, driving recorders, etc. Electronic products such as chip cards and memory cards are not listed here.

4a and 4b, preferably, the detection unit 11 of the metal card tray detection device of the present invention is a relay; of course, other existing devices with automatic switching functions similar to the relay function can also be used to replace them. A skilled person, on the premise of the technical solution provided by the present invention, can select a suitable device from the existing devices and use it as the detection unit 11 of the present application without any creative work.

As shown in FIG. 1-FIG. 4a, in order to enable the indicating unit to better provide indicating information, preferably, the indicating unit 12 of the metal card tray detection device 100 of the present invention includes a first indicator 121 and a second indicator 122, When the first indicator 121 is lit, it gives indication information that there is a metal card tray, and when the second indicator 122 is lit, it gives information that there is no metal card tray; the first indicator 121 and the second indicator 122 are lit. It can be the indication information combined with sound and light, or it can be only a sound prompt, or it can be only a light prompt; two different indicator lights 121 and 122 are used to respectively indicate whether there is a metal card tray. Clarity and distinction.

As shown in FIGS. 1-3 , in order to better locate the detected electronic equipment, the metal card tray detection device 100 of the present invention further includes a positioning plate 30 , and a positioning block 31 for fixing the electronic equipment is provided on the positioning plate 30 . Specifically, the positioning block 31 is arranged on the positioning plate 30 in a sliding engagement; for electronic equipment of different models and sizes, the positioning and fixing of electronic equipment of different models and sizes can be realized by adjusting the position of the positioning block 31 More specifically, the positioning block 31 encloses a card cavity 31a that matches the outline of the electronic device to be detected on the positioning plate 30, and during detection, the electronic device is clamped in the card cavity surrounded by the positioning block 31, The electronic equipment can be positioned and waited for detection; the structure is simple and the operation is convenient and quick.

As shown in Figures 1-4b, in order to further improve the detection accuracy and service life of the present application, the positioning plate 30 is also provided with a proximity switch 10a that controls the activation of the detection module 10. When the positioning plate 30 is positioned with a proximity switch 10a When the electronic device is used, the proximity switch 10a senses the existence of the electronic device to control the detection module 10 to turn on, and then performs detection; when the electronic device is removed, the proximity switch 10a loses the induction to the electronic device, thereby controlling the detection module 10 to turn off; In the standby state, that is, when the electronic device is not detected, the indicating unit 12 is disconnected from the power supply, that is, the indicating unit 12 does not give any indication information; this effectively compensates for the fact that when there is no proximity switch 10a, in the standby state, the indicating unit returns It is a waste of information resources without the instructions of the metal card tray.

As shown in FIGS. 1-6 , in order to facilitate the installation of the magnetic switch 13 and the magnet 20 , preferably, the metal card tray detection device 100 of the present invention further includes a mounting member 40 , and the mounting member 40 is arranged on the positioning plate 30 . The magnetic switch 13 is arranged on the mounting piece 40 ; the magnet 20 is slidably arranged on the mounting piece 40 , and the mounting piece 40 can effectively ensure that the magnet 20 and the magnetic switch 13 are opposite to each other and have a reasonable distance.

3 , 5 and 6 , preferably, the mounting member 40 of the metal card tray detection device of the present invention is provided with a sliding hole 41 arranged obliquely, and the magnet 20 is slidably arranged in the sliding hole 41 , through the sliding hole 41, the sliding track of the magnet 20 is constrained and guided, which can further improve the accuracy of the magnetic switch 13 and the magnetic switch 13 to control the opening or closing of the magnetic switch 13 by changing the magnetic force; specifically , the sliding hole 41 is closed at both ends, so as to effectively restrain the magnet 20 .

3, 5 and 6, preferably, in order to facilitate installation and maintenance, the metal card tray detection device 100 of the present invention further includes a hole plug 42, and the hole plug 42 is detachably inserted in the sliding hole At the opening of the end of 41 , the sliding hole 41 is closed by the insertion of the hole plug 42 , so as to restrain the magnet and prevent the magnet 20 from falling out of the sliding hole 41 during transportation such as transportation.

Preferably, the magnetic switch 13 of the metal card tray detection device 100 of the present invention is located directly above the sliding hole 41 ; and the longitudinal direction of the magnetic switch 13 and the projection of the longitudinal direction of the sliding hole 41 on the horizontal plane are orthogonal.

1-6, since the card slot of the electronic device is located between the magnet 20 and the magnetic switch 13, when there is a metal card tray in the detected card slot of the electronic device, the metal card tray attracts the slidable magnet 20 Sliding in the direction of itself, and the metal card holder is located between the magnet 20 and the magnetic switch 13, so the magnet 20 will gradually approach the magnetic switch 13, and the sliding of the magnet 20 in the direction of approaching the magnetic switch 13 will increase the magnet 20 and the magnetic switch 13. The change of the magnetic force of the switch 13, the increase of the magnetic force will trigger the magnetic switch 13 to change from the open state to the closed state, and then the indicating unit 12 will give the indication information that there is a metal card tray; when there is no metal card in the card slot of the detected electronic device When the magnet 20 and the magnetic switch 13 are held, the distance between the magnet 20 and the magnetic switch 13 does not change, the magnet 20 does not slide and maintains a static state, so the magnetic force between the magnet 20 and the magnetic switch 13 does not change, the magnetic switch 13 is in the off state, and the indicating unit 12 gives There is no indication information of the metal card tray; it can be seen from the above that in the present application, the magnetic force of the magnet 20 and the magnetic switch 13 is changed by the sliding of the magnet 20, and then the change of the magnetic force triggers the magnetic switch 13 to be open or closed, thereby indicating the unit 12 gives the indication information of whether there is a metal card tray, the structure is simple and the design is reasonable; at the same time, the application only needs to set the card slot of the electronic device between the magnet and the magnetic switch, and the indicator unit 12 can be used effectively and accurately. The instruction information of whether the electronic device has a metal card tray is given, and the detection result is accurate, reliable, fast and convenient.

The above disclosures are only the preferred embodiments of the present invention, which of course cannot limit the scope of rights of the present invention. Therefore, equivalent changes made according to the scope of the patent application of the present invention are still within the scope of the present invention.

Claims (5)

1. A metal card tray detection device for detecting whether there is a metal card tray in a card slot of an electronic device, wherein the metal card tray detection device comprises: A detection module, the detection module includes a detection unit, an indication unit and a magnetic switch, the detection unit and the indication unit are electrically connected by the magnetic switch, and when the magnetic switch is in an open or closed state, the The indication unit gives different indication information; A magnet, the magnet is arranged in a sliding manner, the magnet and the magnetic switch are arranged opposite to each other with a certain distance between them, the sliding of the magnet changes the magnetic force between the magnet and the magnetic switch, and the magnetic force The change in triggers the magnetic switch to be open or closed; a positioning plate, which is provided with a positioning block for fixing the electronic device; a mounting piece, the mounting piece is arranged on the positioning plate, the magnetic switch is arranged on the mounting piece, the magnet is slidably arranged on the mounting piece, and the opening on the mounting piece is inclined and arranged the sliding hole, the magnet is slidably arranged in the sliding hole; The magnetic switch is located just above the sliding hole, and the longitudinal direction of the magnetic switch and the projection of the longitudinal direction of the sliding hole on the horizontal plane are orthogonal; The card slot of the electronic device is located between the magnet and the magnetic switch; when there is a metal card holder in the card slot, the metal card holder attracts the magnet to slide and approach the magnetic switch, so that the magnetic switch is closed If there is no metal card tray in the card slot, the magnet does not slide to maintain a static state, the magnetic switch is disconnected, and the indicating unit provides The instructions for the metal-free card tray are displayed. 2 . The metal card tray detection device according to claim 1 , wherein the indicating unit comprises a first indicator and a second indicator, and when the first indicator is lit, the metal card tray is displayed. 3 . Indication information, when the second indicator is lit, the indication information of no metal card tray is given. 3. The metal card tray detection device according to claim 1, wherein the detection unit is a relay. 4 . The metal card tray detection device according to claim 1 , wherein the sliding hole is closed at both ends. 5 . 5 . The metal card tray detection device according to claim 4 , further comprising a hole plug, the hole plug being detachably inserted at the opening of the sliding hole, and the sliding hole The hole plug is inserted to form a closed shape.

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