CN209356596U - Test fixture for mobile phone charging head - Google Patents

Abstract

The utility model relates to a detection tool field, concretely relates to a detection tool for cell-phone head that charges, including tool body and detection device, tool body top is equipped with the recess, the recess bottom is equipped with two socket holes, the socket downthehole is equipped with two first metal shrapnels, tool body lateral wall is equipped with the interface of being connected with external power supply electricity, the interface passes through the wire electricity with first metal shrapnel and is connected, detection device establishes at the tool originally internally, tool body top is equipped with the USB interface, the USB interface is connected with the detection device electricity, detection device is including the display screen that is used for showing detection device's testing result, the display screen is connected with the detection device electricity. The utility model discloses can conveniently charge the head to the cell-phone and examine.

Description

Test fixture for mobile phone charging head

technical field

The utility model relates to the field of detection fixtures, in particular to a detection fixture for mobile phone charging heads.

Background technique

The mobile phone charging head is a power supply conversion device for smart phones and smart electronic devices. The mobile phone charging head generally includes three parts, namely the charging plug body, data cable and USB connector. The charging plug body is generally composed of a shell, a plug, an adapter circuit board, etc. Composed of components, its working principle is converted from high-voltage AC input to low-voltage DC output. The mobile phone charging head converts 220V high-voltage alternating current into 5V low-voltage direct current.

After the mobile phone charging head is produced and processed in the processing factory, it is necessary to conduct sampling inspection on the mass-produced mobile phone charging head. The detection needs to use the detection device to check whether the output of the mobile phone charging head meets the standard, and count the same batch of mobile phone charging heads. The pass rate; in order to facilitate the inspection of the mobile phone charging head, it is necessary to design a detection fixture.

Utility model content

The main purpose of the utility model is to provide a detection fixture for the charging head of a mobile phone, which can conveniently inspect the charging head of the mobile phone.

In order to achieve the above purpose, the utility model provides a detection fixture for mobile phone charging head, including a fixture body and a detection device, the top of the fixture body is provided with a groove, and the bottom of the groove is provided with two The socket hole is provided with two first metal shrapnels, the side wall of the fixture body is provided with an interface electrically connected to an external power supply, the interface is electrically connected to the first metal shrapnel through a wire, and the detection The device is arranged in the jig body, and the top of the jig body is provided with a USB interface, and the USB interface is electrically connected to the detection device, and the detection device includes a display screen for displaying the detection results of the detection device, and the display screen Electrically connected with the detection device.

The working principle and advantages of the utility model are: the socket hole and the USB interface are set so that when the mobile phone charging head is detected, the plug of the mobile phone charging head is inserted into the socket hole first, and then the USB connector of the mobile phone charging head is inserted into the USB interface, and then Connect the 220V external power supply through the interface, the detection device detects the voltage of the USB connector, and displays the detection result on the display screen, and judges whether the mobile phone charging head is qualified according to the detection result on the display screen compared with the standard. The detection fixture is simple in structure, practical and convenient in detection.

Further, the side walls on both sides of the groove are provided with installation grooves, and a control switch for controlling the communication between the first metal shrapnel and the interface is arranged in the installation groove, and the control switch is on the travel path of the charging head of the mobile phone. The setting depth of the metal shrapnel is less than the length of the plug of the charging head of the mobile phone.

The setting depth of the first metal shrapnel is less than the length of the plug of the charging head of the mobile phone, so that when the plug is inserted into the socket hole, the plug first contacts with the first metal shrapnel, forms a circuit loop with the interface, and then turns on the control switch and connects to the external power supply . Realize that the charging head of the mobile phone is connected into the loop first and then the power supply is turned on, which can avoid sparks at the connection between the plug and the first metal shrapnel.

Further, the control switch includes a movable block and a second metal shrapnel, the movable block is made of metal, the vertical section of the movable block is a right-angled trapezoid and is slidably connected with the installation groove, and the gap between the movable block and the groove wall of the installation groove is A return spring is connected, and the two second metal shrapnels are respectively arranged on the upper and lower sides of the installation groove on the groove walls, and the second metal shrapnels are electrically connected to the interface through wires.

After the plug touches the first metal shrapnel, as the plug continues to be inserted into the socket hole, the charging head of the mobile phone contacts the slope of the movable block, driving the movable block to slide in the installation groove. When the movable block is in contact with the two second metal shrapnel , the control switch is turned on, so that the plug and the first metal shrapnel are connected to the external power supply through the interface, and the charging head of the mobile phone is connected to the circuit before the power is turned on, which can avoid sparks at the connection between the plug and the first metal shrapnel.

Further, a movable plate is slidably connected in the groove, and the movable plate is provided with two through holes, the two through holes are respectively opposite to the two socket holes, and the bottom corner of the movable plate is offset against the slope of the movable block .

Since the movable plate and the charging head of the mobile phone are in face-to-face contact, the contact area is larger, which can prevent the corners of the charging head of the mobile phone from contacting the movable block, and the small contact area may easily cause the corners of the charging head of the mobile phone to be damaged. At the same time, the movable block is conductive, and the movable plate can isolate the charging head of the mobile phone from the movable block, so as to avoid electric shock caused by misoperation and contact with the movable block.

Further, a limiting plate is provided on the movable plate, and the limiting plate is fixedly arranged on the side wall of the groove.

The limiting plate is used to prevent the movable plate from breaking away from the groove.

Further, the detection device is a digital voltmeter.

The digital voltmeter can display the detection value of the output detection thimble on the display screen in the form of numbers, which is more straightforward and easier to judge.

Description of drawings

Fig. 1 is the front view of the detection fixture embodiment of the utility model for mobile phone charging head;

Fig. 2 is a vertical partial sectional view of Fig. 1;

FIG. 3 is an enlarged schematic view of AO in FIG. 2 .

Detailed ways

The following is further described in detail through specific implementation methods:

The reference signs in the drawings of the specification include: jig body 1, display screen 2, groove 3, socket hole 4, USB interface 5, mobile phone charging head 6, plug 7, limit plate 8, movable plate 9, first Metal shrapnel 10 , movable block 11 , second metal shrapnel 12 , return spring 13 .

Embodiment is shown in Figure 1 and Figure 2 basically:

A detection fixture for mobile phone charging head 6, comprising a fixture body 1 and a detection device, the top of the fixture body 1 is provided with a groove 3, and the bottom of the groove 3 is provided with two socket holes 4, the The socket hole 4 is fixed with two first metal domes 10, the side wall of the jig body 1 is provided with a USB interface 5 electrically connected to an external power supply, and the USB interface 5 and the first metal dome 10 are electrically connected through a wire. connect;

The fixture body 1 is provided with a cavity, the detection device is arranged in the cavity in the fixture body 1, the detection device is a digital voltmeter, and the top of the fixture body 1 is provided with a USB interface 5, The USB interface 5 is electrically connected to the detection device, and the detection device includes a display screen 2 for displaying the detection result of the detection device, and the display screen 2 is electrically connected to the detection device.

The sidewalls on both sides of the groove 3 are provided with installation grooves, and the installation groove is provided with a control switch for controlling the communication between the first metal shrapnel 10 and the USB interface 5, and the control switch is on the travel path of the mobile phone charging head 6 , the setting depth of the first metal shrapnel 10 is less than the length of the plug 7 of the mobile phone charging head 6 .

As shown in Figure 3, the control switch includes a movable block 11 and a second metal dome 12, the movable block 11 is made of metal, the vertical section of the movable block 11 is a right-angled trapezoid and is slidably connected with the installation groove, so A return spring 13 is connected between the movable block 11 and the wall of the installation groove, and two pieces of the second metal shrapnel 12 are respectively fixed on the groove walls on the upper and lower sides of the installation groove. It is electrically connected with the USB interface 5 .

A movable plate 9 is slidably connected in the groove 3, and the movable plate 9 is provided with two through holes, and the two through holes are respectively opposite to the two socket holes 4, and the bottom corner of the movable plate 9 is in contact with the socket hole 4. The slopes of the movable block 11 are offset.

The movable plate 9 is provided with a limiting plate 8 , and the limiting plate 8 is fixedly arranged on the side wall of the groove 3 .

The specific implementation process is as follows:

Connect the 220V external power supply to the interface. When testing the charging head 6 of the mobile phone, first insert the USB connector of the charging head 6 of the mobile phone into the USB interface 5, and then insert the plug 7 of the charging head 6 of the mobile phone into the socket hole 4; After the first metal dome 10, a circuit loop is formed between the plug 7, the first metal dome 10, the second metal dome 12, and the USB interface 5. Since the second metal dome 12 in the control switch is not conducting, there is no connection in the circuit loop. current.

As the plug 7 is continuously inserted into the socket hole 4, the charging head 6 of the mobile phone contacts the slope of the movable block 11, and drives the movable block 11 to slide in the installation groove. The second metal dome 12 is turned on through the movable block 11 made of metal, so the control switch is turned on, and the 220V external power supply is connected to the circuit loop, and there is current in the circuit loop. Since the charging head 6 of the mobile phone is first connected to the circuit and then powered on, sparks can be avoided at the connection between the plug 7 and the first metal shrapnel 10 .

After the mobile phone charging head 6 has current access, the detection device detects the voltage of the USB connector, and displays the detection result on the display screen 2, and judges whether the mobile phone charging head 6 is qualified according to the detection result comparison standard on the display screen 2.

After the mobile phone charging head 6 is detected, the plug 7 and the USB connector of the mobile phone charging head 6 are unplugged, and the movable block 11 is reset under the action of the return spring 13, which drives the movable block 11 to move so that the movable plate 9 also resets, and the control switch is turned off. Open the control of the external power supply, which is convenient for the next detection.

What is described above is only an embodiment of the utility model, and the common knowledge such as the specific structure and characteristics known in the scheme is not described too much here, and those of ordinary skill in the art know all the technical fields of the utility model before the filing date or the priority date. ordinary technical knowledge, be able to know all the prior art in this field, and have the ability to apply conventional experimental methods before this date, those of ordinary skill in the art can improve and implement this application in combination with their own abilities under the inspiration given by this application Schemes, some typical known structures or known methods should not be obstacles for those of ordinary skill in the art to implement the present application. It should be pointed out that for those skilled in the art, under the premise of not departing from the structure of the utility model, some deformations and improvements can also be made, and these should also be regarded as the protection scope of the utility model, and these will not affect the utility model. Effects of novel implementations and utility of patents. The scope of protection required by this application shall be based on the content of the claims, and the specific implementation methods and other records in the specification may be used to interpret the content of the claims.

Claims (6)

1. being used for the detection jig of mobile phone charging head, it is characterised in that: including jig body and detection device, the jig body Top is equipped with groove, and the bottom portion of groove is set there are two socket aperture, and two piece of first metal clips is equipped in the socket aperture, described Jig body side wall is equipped with the interface being electrically connected with external power supply, and the interface is electrically connected with the first metal clips by conducting wire, The detection device is located in jig body, and USB interface, the USB interface and detection device are equipped at the top of the jig body Electrical connection, the detection device include the display screen for showing the testing result of detection device, and the display screen and detection fill Set electrical connection.

2. the detection jig according to claim 1 for mobile phone charging head, it is characterised in that: groove two sides side wall Equipped with mounting groove, it is equipped in the mounting groove for controlling the control switch that the first metal clips is communicated with interface, the control For switch in the travel paths of mobile phone charging head, the setting depth of first metal clips is less than the plug of mobile phone charging head Length.

3. the detection jig according to claim 2 for mobile phone charging head, it is characterised in that: the control switch includes Movable block and the second metal clips, the movable block are metal material, the vertical section of the movable block be right-angled trapezium and with Mounting groove is slidably connected, and is connected with reset spring, two pieces of second metal clips between the movable block and installation groove groove wall It is separately positioned on the cell wall of two sides up and down of mounting groove, second metal clips is electrically connected by conducting wire with interface.

4. the detection jig according to claim 3 for mobile phone charging head, it is characterised in that: sliding connects in the groove It is connected to movable plate, is set on the movable plate there are two through-hole, two through-holes are opposite with two socket apertures respectively, the activity Board bottom portion corner and the inclined-plane of movable block offset.

5. the detection jig according to claim 4 for mobile phone charging head, it is characterised in that: the movable plate is equipped with Limit plate, the limit plate are fixed in recess sidewall.

6. the detection jig according to claim 1 for mobile phone charging head, it is characterised in that: the detection device is number Word voltmeter.