Optical communication circuit board impedance detection device
The flexible contact design with negative pressure suction cup and spring protection solves the problems of scratches on the outer surface and damage to the pins during circuit board testing, achieving efficient, flexible testing and adaptability to multiple models.
Patent Information
- Application Number
- CN202520203590.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-10
- Publication Date
- 2025-12-02
- Estimated Expiration
- 2035-02-10
AI Technical Summary
Existing circuit board testing equipment is prone to scratching or damaging the outer surface of the circuit board during the fixing and testing process, and the probe contacts are prone to crushing the pin parts, increasing production losses.
The circuit board is fixed by a negative pressure suction cup, and the detection head and spring protection contacts are adjusted by horizontal and vertical electric slide rails to avoid hard contact and make flexible contact by utilizing the elasticity of the spring.
It effectively avoids damage to the outer surface and pins of the circuit board, expands the detection range and adapts to different types of circuit boards, improves production efficiency and reduces losses.
Smart Images
Figure CN223624375U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of circuit board testing, and in particular to an impedance testing device for optical communication circuit boards. Background Technology
[0002] In a circuit with resistance, inductance, and capacitance, the opposition to the flow of current is called impedance. Impedance is commonly represented by Z, a complex number. Its real part is called resistance, and its imaginary part is called reactance. The opposition of a capacitor to alternating current in a circuit is called capacitive reactance, and the opposition of an inductor to alternating current in a circuit is called inductive reactance. The combined opposition of capacitance and inductance to alternating current in a circuit is called reactance. The unit of impedance is the ohm. The concept of impedance is not only present in circuits but also in mechanical vibration systems. In circuit board soldering, it is easy to encounter open circuits or leads, which can cause the circuit board to malfunction. Impedance testing devices are needed to check the quality of circuit boards.
[0003] In the prior art, an impedance testing device for quality inspection of printed circuit boards, with authorization announcement number 214845633U, relates to the field of circuit board technology. It addresses the problem that during circuit board production, soldering can easily result in wire breaks or exposed pins, causing the circuit board to malfunction and requiring manual inspection. Manual measurement is slow, time-consuming, and inefficient. The proposed solution involves a gearbox fixed to the top of a housing, a first cylinder fixed to the bottom inner wall of the gearbox, a first solenoid valve fixed inside the first cylinder, a first piston sleeved inside the first cylinder, and a rack fixed to the left side of the first piston. This automated measurement, performing individual measurements on specified components, is fast, time-saving, and quickly removes defective circuit boards, significantly improving production efficiency, reducing manual intervention, and saving labor resources and costs.
[0004] In the above technical solution, during testing, on the one hand, the circuit board needs to be fixed. Since the circuit board itself is thin, rigid fixing can easily cause scratches or even damage to the outer surface of the circuit board, resulting in increased circuit board production losses. On the other hand, it is necessary to use a lifting structure to adjust the height of the measuring pen so that the contact of the measuring pen can contact the pin. When contacting, the contact of the measuring pen can easily damage the pin of the circuit board, which will increase the loss of the circuit board production. To address this, we propose an impedance detection device for optical communication circuit boards. Utility Model Content
[0005] To address the shortcomings of existing technologies, this utility model provides an impedance detection device for optical communication circuit boards. This device solves the problems encountered during testing: firstly, the circuit board needs to be fixed, but due to its thinness, rigid fixing can easily cause scratches or even damage to the outer surface, increasing production losses; secondly, a lifting structure is needed to adjust the height of the measuring pen so that its contact point can make contact with the pins, which can easily damage the pins, further increasing production losses.
[0006] To achieve the above objectives, this utility model provides the following technical solution: an impedance detection device for optical communication circuit boards, comprising a housing, an installation groove on the inner surface of the housing, a suction cup assembly installed inside the installation groove, a negative pressure pump installed at the bottom of the housing, an air pipe connected to the negative pressure pump, an electrically controlled venting valve installed on the air pipe, a mounting frame installed on the inner surface of the housing, a position adjustment assembly installed on the mounting frame, and a detection assembly installed below the position adjustment assembly.
[0007] As a further technical solution of this utility model, the position adjustment component includes two transverse electric slide rails, and a longitudinal electric slide rail is installed at the moving end of each transverse electric slide rail.
[0008] As a further technical solution of this utility model, the moving end of the longitudinal electric slide rail is equipped with a lifting electric push rod, and the output end of the lifting electric push rod is connected to the detection component.
[0009] As a further technical solution of this utility model, the detection component includes a mounting bracket, which is installed at the output end of the lifting electric push rod, and a measuring pen is detachably mounted on the mounting bracket.
[0010] As a further technical solution of this utility model, a fixed contact is installed at the lower end of the measuring pen, a guide groove is provided at the lower end of the fixed contact, a telescopic rod is slidably installed in the guide groove of the fixed contact, and a movable contact is installed at the lower end of the telescopic rod.
[0011] As a further technical solution of this utility model, a spring is movably sleeved on the outside of the telescopic rod, the upper end of the spring is installed on the lower end of the fixed contact, and the lower end of the spring is installed on the upper end of the fixed contact.
[0012] As a further technical solution of this utility model, a display screen is installed on the outer casing of the device.
[0013] This invention provides an impedance detection device for optical communication circuit boards, which has the following advantages compared with the prior art:
[0014] 1. The optical communication circuit board impedance detection device of this application places the circuit board on the inner surface of the device housing, and uses a negative pressure pump to generate negative pressure, which causes the suction cup assembly to generate negative pressure suction to fix the circuit board on the inner surface of the device housing. By fixing the circuit board by negative pressure, the circuit board can be avoided from hard contact, which would cause damage to the surface.
[0015] 2. The optical communication circuit board impedance detection device of this application has a horizontal electric slide rail that can drive the vertical electric slide rail and the detection component to move and adjust the horizontal position, and a vertical electric slide rail that can drive the vertical electric slide rail and the detection component to move and adjust the vertical position. This allows the device to be adjusted according to the pin position of the circuit board, thereby further improving the detection range of the device and enabling the device to detect multiple types of circuit boards.
[0016] 3. In the optical communication circuit board impedance detection device of this application, the spring applies elastic force to the movable contact, so that the movable contact has a certain amount of room for movement when in contact due to the elasticity of the spring, avoiding damage to the circuit board pins due to hard contact. In addition, the spring can apply elastic force to the movable contact, so that the movable contact fits tightly against the pin, thereby avoiding poor contact with conductive parts. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the overall structure of an impedance detection device for an optical communication circuit board.
[0018] Figure 2 This is a schematic diagram of the bottom structure of the housing of an optical communication circuit board impedance detection device.
[0019] Figure 3 This is a schematic diagram of the structure of a mounting bracket for an impedance detection device on an optical communication circuit board.
[0020] Figure 4 for Figure 3 An enlarged structural diagram of point a in the middle.
[0021] In the diagram: 1. Equipment casing; 11. Display screen; 2. Mounting slot; 3. Suction cup assembly; 4. Air pipe; 5. Negative pressure pump; 6. Electrically controlled vent valve; 7. Fixing frame; 8. Position adjustment assembly; 81. Horizontal electric slide rail; 82. Longitudinal electric slide rail; 83. Lifting electric push rod; 9. Detection assembly; 91. Mounting bracket; 92. Measuring pen; 93. Fixed contact; 94. Telescopic rod; 95. Movable contact; 96. Spring. Detailed Implementation
[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.
[0023] Please see Figure 1-4 This utility model provides an impedance detection device for optical communication circuit boards, including a device housing 1, a display screen 11 mounted on the device housing 1, a mounting groove 2 provided on the inner surface of the device housing 1, a suction cup assembly 3 installed inside the mounting groove 2, a negative pressure pump 5 installed at the bottom of the device housing 1, an air pipe 4 connected to the negative pressure pump 5, an electrically controlled venting valve 6 installed on the air pipe 4, a fixing frame 7 mounted on the inner surface of the device housing 1, a position adjustment assembly 8 mounted on the fixing frame 7, and a detection assembly 9 mounted below the position adjustment assembly 8. In use, the circuit board is placed outside the device. The circuit board is fixed to the inner surface of the outer shell 1 by the negative pressure pump 5 generating negative pressure, which in turn generates negative pressure suction force in the suction cup assembly 3. The circuit board is fixed by negative pressure, which can avoid hard contact of the circuit board and damage to the surface. In use, the negative pressure pump 5 drives the air flow, so that the air in the air pipe 4 and the suction cup assembly 3 flows to the negative pressure pump 5, which generates negative pressure at the opening of the suction cup assembly 3. The electrically controlled air release valve 6 can automatically open to put external air into the air pipe 4 and the suction cup assembly 3, and release the negative pressure state at the opening of the suction cup assembly 3.
[0024] like Figure 3 As shown, in this embodiment, the position adjustment component 8 includes two transverse electric slide rails 81. Each transverse electric slide rail 81 has a longitudinal electric slide rail 82 mounted on its moving end. The longitudinal electric slide rail 82 has a lifting electric push rod 83 mounted on its moving end. The output end of the lifting electric push rod 83 is connected to the detection component 9. In use, the operation of the transverse electric slide rail 81 can drive the longitudinal electric slide rail 82 and the detection component 9 to move and adjust the transverse position. The operation of the longitudinal electric slide rail 82 can drive the longitudinal electric slide rail 82 and the detection component 9 to move and adjust the longitudinal position. This allows the device to be adjusted according to the pin positions of the circuit board, further improving the detection range of the device and enabling the device to detect multiple types of circuit boards.
[0025] like Figure 3 and Figure 4As shown, in this embodiment, the detection component 9 includes a mounting bracket 91, which is mounted on the output end of the lifting electric actuator 83. A measuring pen 92 is detachably mounted on the mounting bracket 91. A fixed contact 93 is mounted on the lower end of the measuring pen 92. A guide groove is provided at the lower end of the fixed contact 93. A telescopic rod 94 is slidably mounted in the guide groove of the fixed contact 93. A movable contact 95 is mounted on the lower end of the telescopic rod 94. A spring 96 is movably sleeved on the outside of the telescopic rod 94. The upper end of the spring 96 is mounted on the lower end of the fixed contact 93, and the lower end of the spring 96 is mounted on the upper end of the fixed contact 93. In use, the output end of the lifting electric actuator 83 can drive the mounting bracket 91 and the measuring pen 92 to move up and down, thereby moving the measuring pen 92 towards the pin of the circuit board, so that the movable contact 95 contacts the pin. When in contact, the spring 96 applies a spring force to the movable contact 95, so that the movable contact 95 has a certain amount of room to move when in contact due to the elasticity of the spring, avoiding damage to the pin of the circuit board due to hard contact. The spring 96 can also apply a spring force to the movable contact 95, so that the movable contact 95 fits tightly against the pin, thereby avoiding poor contact with conductive parts.
[0026] The working principle of this utility model is as follows:
[0027] In use, the circuit board is placed on the inner surface of the device housing 1, and the negative pressure pump 5 generates negative pressure, which causes the suction cup assembly 3 to generate negative pressure suction to fix the circuit board to the inner surface of the device housing 1. The circuit board is fixed by negative pressure, which can avoid hard contact of the circuit board and damage to the surface. In use, the negative pressure pump 5 drives the air flow, so that the air in the air pipe 4 and the suction cup assembly 3 flows to the negative pressure pump 5, which generates negative pressure at the opening of the suction cup assembly 3. The electrically controlled air release valve 6 can be automatically opened to put external air into the air pipe 4 and the suction cup assembly 3, and release the negative pressure state at the opening of the suction cup assembly 3.
[0028] When in use, the operation of the horizontal electric slide rail 81 can drive the vertical electric slide rail 82 and the detection component 9 to move and adjust the horizontal position. The operation of the vertical electric slide rail 82 can drive the vertical electric slide rail 82 and the detection component 9 to move and adjust the vertical position, so that the equipment can be adjusted according to the pin position of the circuit board, further improving the detection range of the equipment and enabling the equipment to detect multiple circuit boards of different models.
[0029] In use, the output end of the lifting electric actuator 83 can drive the mounting bracket 91 and the measuring pen 92 to move up and down, thereby moving the measuring pen 92 towards the pin of the circuit board, so that the movable contact 95 contacts the pin. When in contact, the spring 96 applies a spring force to the movable contact 95, so that the movable contact 95 has a certain amount of room to move when in contact due to the elasticity of the spring, avoiding damage to the pin of the circuit board due to hard contact. The spring 96 can also apply a spring force to the movable contact 95, so that the movable contact 95 fits tightly against the pin, thereby avoiding poor contact with conductive parts.
[0030] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model are implemented according to conventional methods in the art, unless otherwise specified or limited.
Claims
1. An impedance detection device for an optical communication circuit board, characterized in that, The device includes a housing (1), an installation groove (2) is provided on the inner surface of the housing (1), a suction cup assembly (3) is installed inside the installation groove (2), a negative pressure pump (5) is installed at the bottom of the housing (1), an air pipe (4) is connected to the negative pressure pump (5), an electrically controlled venting valve (6) is installed on the air pipe (4), a fixing frame (7) is installed on the inner surface of the housing (1), a position adjustment assembly (8) is installed on the fixing frame (7), and a detection assembly (9) is installed on the lower side of the position adjustment assembly (8).
2. The impedance detection device for an optical communication circuit board according to claim 1, characterized in that, The position adjustment assembly (8) includes two transverse electric slide rails (81), and each transverse electric slide rail (81) has a longitudinal electric slide rail (82) mounted on its moving end.
3. The impedance detection device for an optical communication circuit board according to claim 2, characterized in that, The moving end of the longitudinal electric slide rail (82) is equipped with a lifting electric push rod (83), and the output end of the lifting electric push rod (83) is connected to the detection component (9).
4. The impedance detection device for an optical communication circuit board according to claim 3, characterized in that, The detection component (9) includes a mounting bracket (91) which is mounted on the output end of the lifting electric push rod (83), and a measuring pen (92) is detachably mounted on the mounting bracket (91).
5. The impedance detection device for an optical communication circuit board according to claim 4, characterized in that, The lower end of the measuring pen (92) is equipped with a fixed contact (93), the lower end of the fixed contact (93) is provided with a guide groove, a telescopic rod (94) is slidably installed in the guide groove of the fixed contact (93), and a movable contact (95) is installed at the lower end of the telescopic rod (94).
6. The impedance detection device for an optical communication circuit board according to claim 5, characterized in that, The telescopic rod (94) is externally fitted with a spring (96), the upper end of the spring (96) is mounted on the lower end of the fixed contact (93), and the lower end of the spring (96) is mounted on the upper end of the fixed contact (93).
7. The impedance detection device for an optical communication circuit board according to claim 6, characterized in that, A display screen (11) is mounted on the outer casing (1) of the device.