Fuse circuit board component pin length measuring device

Abstract

The utility model belongs to the technical field of length measurement of specific electronic components, and particularly relates to a fuze circuit board component pin length measuring device, which is divided into an upper limit device and a lower limit device according to different measured upper and lower limit heights, and two devices are used together in one group. The front of the device body is provided with positioning holes, upper and lower limit marks, through holes and grooves. Low bosses and high bosses are designed on the back surface, and anti-skid grains are engraved on the side surface. The four through holes are used for inserting pins to be tested, and the two grooves are used for making up welding spots at the bottom of the circuit board when fuse circuit board components are placed. High and low bosses with different heights are processed on the back surface of the main body according to different requirements on the length, the upper limit size and the lower limit size of the contact pin. When the length of the pins is measured, the four pins of the fuze circuit board component are sequentially inserted into the through holes of the upper and lower limit measuring devices according to the positioning holes, and the condition that the pins pass through the through holes is observed. When the upper limit measuring device is used, if the pin protrudes out of the through hole, the upper limit measuring device is unqualified. When the lower limit measuring device is used, if the pin does not protrude out of the through hole, the lower limit measuring device is unqualified.

Description

Technical Field

[0001] The utility model belongs to the technical field of length measurement of specific electronic components, and in particular relates to a device for measuring the length of a pin of a fuse circuit board component. Background Art

[0002] As the brain of ammunition, the fuze is crucial for ensuring ammunition safety, unleashing the full power of the weapon system, and improving its overall effectiveness. A certain fuze circuit board assembly consists of three soldered circuit boards and four pins (two antenna pins, one positive power pin, and one negative power pin), characterized by its compact size and high production volume. Design requirements necessitate measuring the length of the four soldered pins, which vary in length and require high precision at both upper and lower limits. Traditional measurement methods are time-consuming and labor-intensive. Therefore, a measurement device that is accurate, intuitive, and rapid is needed to improve the inspection efficiency of this fuze circuit board assembly and reduce costs. Utility Model Content

[0003] (1) Technical issues to be resolved

[0004] The technical problem to be solved by the utility model is: how to provide a device for measuring the length of the pins of a fuse circuit board component.

[0005] (2) Technical solution

[0006] In order to solve the above technical problems, the utility model provides a device for measuring the length of the pin of a fuse circuit board component. The device for measuring the length of the pin of a fuse circuit board component is composed of two devices in a group, one of which is an upper limit measuring device and the other is a lower limit measuring device.

[0007] The upper limit measuring device comprises: a main body (1), wherein the main body (1) is a stainless steel disc body;

[0008] The front surface of the main body (1) is provided with one positioning hole (2), four through holes (3) for measuring pins, and two slots (4);

[0009] The positioning hole (2) is used to provide a positioning reminder when placing the fuse circuit board component, ensuring accurate placement;

[0010] Four through holes (3) are used to insert the pins to be tested;

[0011] The two grooves (4) are used to clear the bottom solder joint of the front circuit board when placing the fuse circuit board component, ensuring that the pin is fully inserted into the through hole (3) from the bottom; the two grooves (4) are parallel to each other, and the protrusion formed between the two grooves (4) has the same shape as the groove (4) and is formed along the diameter direction passing through the center of the circle;

[0012] According to the different lengths of the pins, bosses of different heights are processed on the back of the main body (1) of the stainless steel disc. The side where the power pin is located is a high boss (8), and the side where the antenna pin is located is a low boss (5);

[0013] The angle between the boundary line between the low boss (5) and the high boss (8) and the center line of the groove (4) is 45°;

[0014] In the upper limit measuring device, the height dimensions of the low boss (5) and the high boss (8) are manufactured according to the upper limit requirements of the pin length;

[0015] The lower limit measuring device has the same structure as the upper limit measuring device, and the only difference is the height size of the boss. The height size of the low boss (5) and the high boss (8) are made according to the lower limit requirement of the pin length.

[0016] The fuse circuit board component is composed of three circuit boards and four pins welded together, wherein the four pins are divided into two antenna pins, a positive power pin and a negative power pin.

[0017] Wherein, in the upper limit measuring device, the blank space on the front of the main body (1) is engraved with the upper and lower limit distinguishing mark (7) "upper limit **", and "**" is the number of the device;

[0018] In the lower limit measuring device, a blank area on the front of the main body (1) is engraved with an upper and lower limit distinguishing mark (7) "lower limit **", where "**" is the number of the device.

[0019] The low boss (5) and high boss (8) designed on the back of the main body (1) have an area of the low boss (5) accounting for 1 / 2 of the area of the entire back of the main body, and an area of the high boss (8) also accounting for 1 / 2 of the area of the entire back of the main body.

[0020] Wherein, in the upper limit device, the height dimension of the low boss (5) is the upper limit of the size of the two antenna pins; and the height dimension of the high boss (8) is the upper limit of the size of the two power pins.

[0021] Wherein, in the lower limit device, the height dimension of the low boss (5) is the lower limit of the size of the two antenna pins; and the height dimension of the high boss (8) is the lower limit of the size of the two power pins.

[0022] The through hole on one side of the front of the main body (1) is chamfered, and the side of the main body (1) is engraved with anti-slip grooves (6).

[0023] When measuring the upper limit, one hand holds the upper limit device body, and the other hand holds the fuse circuit board component in the direction of the positioning point, and inserts the four pins into the through hole (3), and the through hole has a chamfer to avoid the pin soldering point;

[0024] After being inserted into the through hole (3), the solder joint at the bottom of the fuse circuit board component is located in the groove (4), which can ensure that the length of the pin just passes through the through hole (3);

[0025] Observe the back of the main body (1). The through holes corresponding to the two antenna pins are located on one side of the low boss (5), and the through holes corresponding to the two power pins are located on one side of the high boss (8). The height dimensions of the low boss (5) and the high boss (8) are made according to the upper limit requirements of the pin length. If the pin protrudes from the through hole, it means that the upper limit value is exceeded, which means it is unqualified.

[0026] When performing the lower limit measurement, a lower limit measuring device is selected and the measuring method is the same. The height dimensions of the low boss (5) and the high boss (8) are made according to the lower limit requirements of the pin length. If the pin does not protrude from the through hole, it means that the lower limit value is not reached, which means it is unqualified.

[0027] During measurement, the four pins of the fuse circuit board component are inserted into the through holes of the upper measuring device and the lower limit measuring device in turn according to the positioning direction, and the situation of the pins passing through the through holes is observed. If the upper limit measuring device is used, it is judged as unqualified if the pins protrude through the through holes. If the lower limit measuring device is used, the pins do not protrude from the through holes, it is judged as unqualified.

[0028] (3) Beneficial effects

[0029] Compared with the prior art, the beneficial effects of the present invention are:

[0030] (1) The utility model is a set of two devices, which can be used individually or in combination, greatly improving the detection efficiency of a certain fuse circuit board;

[0031] (2) The device for measuring the length of the pins of a fuse circuit board component of the present invention can detect the length of the pins of a certain fuse circuit board component. It is easy to operate and provides a technical reference for the detection of other circuit boards.

[0032] (3) The fuze circuit board component pin length measuring device of the present invention can provide technical support for the subsequent intelligent detection line. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is a front three-dimensional diagram of a device for measuring the length of pins on a fuze circuit board component of the utility model;

[0034] Figure 2 This is a three-dimensional back view of a device for measuring the length of pins of a fuse circuit board component according to the utility model.

[0035] Figure 3 It is a detailed schematic diagram of the technical solution of this utility model. DETAILED DESCRIPTION

[0036] In order to make the purpose, content, and advantages of the present invention more clear, the specific implementation methods of the present invention are further described in detail below with reference to the accompanying drawings and embodiments.

[0037] In order to solve the above technical problems, the utility model provides a device for measuring the length of the pin of a fuse circuit board component. The device for measuring the length of the pin of a fuse circuit board component is composed of two devices in a group, one of which is an upper limit measuring device and the other is a lower limit measuring device.

[0038] The upper limit measuring device comprises: a main body (1), wherein the main body (1) is a stainless steel disc body;

[0039] The front surface of the main body (1) is provided with one positioning hole (2), four through holes (3) for measuring pins, and two slots (4);

[0040] The positioning hole (2) is used to provide a positioning reminder when placing the fuse circuit board component, ensuring accurate placement;

[0041] Four through holes (3) are used to insert the pins to be tested;

[0042] The two grooves (4) are used to clear the bottom solder joint of the front circuit board when placing the fuse circuit board component, ensuring that the pin is fully inserted into the through hole (3) from the bottom; the two grooves (4) are parallel to each other, and the protrusion formed between the two grooves (4) has the same shape as the groove (4) and is formed along the diameter direction passing through the center of the circle;

[0043] According to the different lengths of the pins, bosses of different heights are processed on the back of the main body (1) of the stainless steel disc. The side where the power pin is located is a high boss (8), and the side where the antenna pin is located is a low boss (5);

[0044] The angle between the boundary line between the low boss (5) and the high boss (8) and the center line of the groove (4) is 45°;

[0045] In the upper limit measuring device, the height dimensions of the low boss (5) and the high boss (8) are manufactured according to the upper limit requirements of the pin length;

[0046] The lower limit measuring device has the same structure as the upper limit measuring device, and the only difference is the height size of the boss. The height size of the low boss (5) and the high boss (8) are made according to the lower limit requirement of the pin length.

[0047] The fuse circuit board component is composed of three circuit boards and four pins welded together, wherein the four pins are divided into two antenna pins, a positive power pin and a negative power pin.

[0048] Wherein, in the upper limit measuring device, the blank space on the front of the main body (1) is engraved with the upper and lower limit distinguishing mark (7) "upper limit **", and "**" is the number of the device;

[0049] In the lower limit measuring device, a blank area on the front of the main body (1) is engraved with an upper and lower limit distinguishing mark (7) "lower limit **", where "**" is the number of the device.

[0050] The low boss (5) and high boss (8) are designed on the back of the main body (1), and the area of the low boss (5) accounts for 1 / 2 of the area of the entire back of the main body, and the area of the high boss (8) also accounts for 1 / 2 of the area of the entire back of the main body.

[0051] Wherein, in the upper limit device, the height dimension of the low boss (5) is the upper limit of the size of the two antenna pins; and the height dimension of the high boss (8) is the upper limit of the size of the two power pins.

[0052] Wherein, in the lower limit device, the height dimension of the low boss (5) is the lower limit of the size of the two antenna pins; and the height dimension of the high boss (8) is the lower limit of the size of the two power pins.

[0053] The through hole on one side of the front of the main body (1) is chamfered, and the side of the main body (1) is engraved with anti-slip grooves (6).

[0054] When measuring the upper limit, one hand holds the upper limit device body, and the other hand holds the fuse circuit board component in the direction of the positioning point, and inserts the four pins into the through hole (3), and the through hole has a chamfer to avoid the pin soldering point;

[0055] After being inserted into the through hole (3), the solder joint at the bottom of the fuse circuit board component is located in the groove (4), which can ensure that the length of the pin just passes through the through hole (3);

[0056] Observe the back of the main body (1). The through holes corresponding to the two antenna pins are located on one side of the low boss (5), and the through holes corresponding to the two power pins are located on one side of the high boss (8). The height dimensions of the low boss (5) and the high boss (8) are made according to the upper limit requirements of the pin length. If the pin protrudes from the through hole, it means that the upper limit value is exceeded, which means it is unqualified.

[0057] When performing the lower limit measurement, a lower limit measuring device is selected and the measuring method is the same. The height dimensions of the low boss (5) and the high boss (8) are made according to the lower limit requirements of the pin length. If the pin does not protrude from the through hole, it means that the lower limit value is not reached, which means it is unqualified.

[0058] During measurement, the four pins of the fuse circuit board component are inserted into the through holes of the upper measuring device and the lower limit measuring device in turn according to the positioning direction, and the situation of the pins passing through the through holes is observed. If the upper limit measuring device is used, it is judged as unqualified if the pins protrude through the through holes. If the lower limit measuring device is used, the pins do not protrude from the through holes, it is judged as unqualified.

[0059] Example 1

[0060] The present embodiment provides a device for measuring the length of a pin of a fuse circuit board component. Two devices form a set, one being an upper limit device and the other being a lower limit device. Taking the upper limit device as an example, it comprises: a main body 1, a positioning point 2, a through hole 3, a slot 4, a low boss 5, anti-slip grooves 6, upper and lower limit distinguishing marks 7, and a high boss 8. The device is characterized in that: the front of the main body 1 is provided with a positioning point 2, four through holes 3 for measuring pins, two slots 4, and upper and lower limit distinguishing marks "upper limit **" engraved in the blank space, where "**" is the device number; the back is provided with a low boss 5 and a high boss 8. The area of the low boss 5 accounts for half of the entire back area of the main body 1 and is the upper limit of the size of the two antenna pins; the area of the high boss 8 also accounts for half of the entire back area of the main body 1 and is the upper limit of the size of the two power pins. The angle between the boundary line between the low boss 5 and the high boss 8 and the center line of the slot 4 is 45°; the through hole 3 on the front of the main body is chamfered, and the side is engraved with anti-slip cross grooves 6. When performing upper limit measurement, hold the upper limit device body 1 with one hand, and use the other hand to hold the fuse circuit board component in the direction of the positioning point 2, and insert the four pins into the through hole 3. The chamfered design of the through hole 3 can avoid the pin soldering point; after inserting the through hole, the solder point at the bottom of the fuse circuit board component is located in the groove 4, which can ensure that the pin length just passes through the through hole; observing the back of the main body 1, the two antenna pin through holes are located on the lower side of the boss 5, and the two power pin through holes are located on the higher side of the boss 5. The boss height size is made according to the upper limit requirement of the pin length. If the pin protrudes from the through hole 3, it means that it exceeds the upper limit value, which is unqualified; when performing lower limit measurement, the lower limit measurement device is selected, and the measurement method is the same. Only the boss height size is made according to the lower limit requirement of the pin length. If the pin does not protrude from the through hole, it means that the lower limit value is not reached, which is unqualified.

[0061] In summary, the utility model belongs to the technical field of length measurement of specific electronic components, and specifically relates to a device for measuring the length of the pins of a fuse circuit board component. According to the different upper and lower limit heights of the measurement, it is divided into an upper limit device and a lower limit device, and the two are used together as a group. The main body of the device is a stainless steel disc, and the front is designed with positioning holes, upper and lower limit marks, through holes, and grooves; the back is designed with low bosses and high bosses, and the side is engraved with anti-slip grooves. The positioning holes are used to remind the positioning when the fuse circuit board component is placed, the four through holes are used to insert the pins to be measured, and the two grooves are used to make room for the solder joints on the bottom of the circuit board when the fuse circuit board component is placed. According to the different requirements of the pin length and the upper and lower limit dimensions, high and low bosses of different heights are processed on the back of the stainless steel disc (the boss height H1 is the power pin height, and H2 is the antenna pin height). When measuring the pin length, the four pins of the fuse circuit board component are inserted into the through holes of the upper and lower limit measuring devices in turn according to the positioning holes, and the situation of the pins passing through the through holes is observed. When using the upper limit measuring device, if the pin protrudes from the through hole, it is judged as unqualified; when using the lower limit measuring device, if the pin does not protrude from the through hole, it is judged as unqualified.

[0062] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A device for measuring the length of pins of fuze circuit board components, characterized in that: The fuze circuit board component pin length measuring devices are provided in a group of two, one being an upper limit measuring device and the other being a lower limit measuring device; The upper limit measuring device comprises: a main body (1), wherein the main body (1) is a stainless steel disc body; The front surface of the main body (1) is provided with one positioning hole (2), four through holes (3) for measuring pins, and two slots (4); The positioning hole (2) is used to provide a positioning reminder when placing the fuse circuit board component, ensuring accurate placement; Four through holes (3) are used to insert the pins to be tested; The two grooves (4) are used to clear the bottom solder joint of the front circuit board when placing the fuse circuit board component, ensuring that the pin is fully inserted into the through hole (3) from the bottom; the two grooves (4) are parallel to each other, and the protrusion formed between the two grooves (4) has the same shape as the groove (4) and is formed along the diameter direction passing through the center of the circle; According to the different lengths of the pins, bosses of different heights are processed on the back of the main body (1) of the stainless steel disc. The side where the power pin is located is a high boss (8), and the side where the antenna pin is located is a low boss (5); The angle between the boundary line between the low boss (5) and the high boss (8) and the center line of the groove (4) is 45°; In the upper limit measuring device, the height dimensions of the low boss (5) and the high boss (8) are manufactured according to the upper limit requirements of the pin length; The lower limit measuring device has the same structure as the upper limit measuring device, and the only difference is the height size of the boss. The height size of the low boss (5) and the high boss (8) are made according to the lower limit requirement of the pin length.

2. The device for measuring the length of a pin of a fuse circuit board component according to claim 1, wherein: The fuse circuit board component is composed of three circuit boards and four pins welded together, wherein the four pins are divided into two antenna pins, a power positive pin and a power negative pin.

3. The device for measuring the length of a pin of a fuse circuit board component according to claim 1, wherein: In the upper limit measuring device, a blank space on the front of the main body (1) is engraved with an upper and lower limit distinguishing mark (7) "upper limit **", where "**" is the number of the device; In the lower limit measuring device, a blank area on the front of the main body (1) is engraved with an upper and lower limit distinguishing mark (7) "lower limit **", where "**" is the number of the device.

4. The device for measuring the length of a pin of a fuse circuit board component according to claim 1, wherein: The back of the main body (1) is designed with a low boss (5) and a high boss (8), wherein the area of the low boss (5) accounts for 1 / 2 of the area of the entire back of the main body, and the area of the high boss (8) also accounts for 1 / 2 of the area of the entire back of the main body.

5. The device for measuring the length of a pin of a fuse circuit board component according to claim 2, wherein: In the upper limit measuring device, the height dimension of the low boss (5) is the upper limit of the dimensions of the two antenna pins; and the height dimension of the high boss (8) is the upper limit of the dimensions of the two power supply pins.

6. The device for measuring the length of a pin of a fuse circuit board component according to claim 5, wherein: In the lower limit measuring device, the height dimension of the low boss (5) is the lower limit of the dimensions of the two antenna pins; and the height dimension of the high boss (8) is the lower limit of the dimensions of the two power supply pins.

7. The device for measuring the length of a pin of a fuse circuit board component according to claim 6, wherein: A through hole on one side of the front of the main body (1) is chamfered, and anti-slip grooves (6) are engraved on the side of the main body (1).

8. The device for measuring the length of a pin of a fuse circuit board component according to claim 6, wherein: When performing upper limit measurement, one hand holds the upper limit measurement device body, and the other hand holds the fuse circuit board component in the direction of the positioning point, and inserts the four pins into the through hole (3), with the through hole having a chamfer to avoid the pin soldering point; After being inserted into the through hole (3), the solder joint at the bottom of the fuse circuit board component is located in the groove (4), which can ensure that the length of the pin just passes through the through hole (3); Observe the back of the main body (1). The through holes corresponding to the two antenna pins are located on one side of the low boss (5), and the through holes corresponding to the two power pins are located on one side of the high boss (8). The height dimensions of the low boss (5) and the high boss (8) are made according to the upper limit requirements of the pin length. If the pin protrudes from the through hole, it means that the upper limit value is exceeded, which means it is unqualified.

9. The device for measuring the length of a pin of a fuse circuit board component according to claim 8, wherein: When performing the lower limit measurement, a lower limit measuring device is selected and the measuring method is the same. The height dimensions of the low boss (5) and the high boss (8) are made according to the lower limit requirements of the pin length. If the pin does not protrude from the through hole, it means that the lower limit value is not reached, which means it is unqualified.

10. The device for measuring the length of a pin of a fuse circuit board component according to claim 9, wherein: During measurement, insert the four pins of the fuse circuit board component into the through holes of the upper measuring device and the lower limit measuring device in turn according to the positioning direction, and observe the situation of the pins passing through the through holes. If the upper limit measuring device is used, it is judged as unqualified if the pins protrude through the through holes. If the lower limit measuring device is used, the pins do not protrude from the through holes, it is judged as unqualified.

Images