CN207832961U - test device for PCB - Google Patents

test device for PCB Download PDF

Info

Publication number
CN207832961U
CN207832961U CN201820115425.0U CN201820115425U CN207832961U CN 207832961 U CN207832961 U CN 207832961U CN 201820115425 U CN201820115425 U CN 201820115425U CN 207832961 U CN207832961 U CN 207832961U
Authority
CN
China
Prior art keywords
plate
needle bed
fixed plate
test device
pressing plate
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201820115425.0U
Other languages
Chinese (zh)
Inventor
席阳洋
曾国建
范晓东
许海丽
余铿
蔡华娟
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Anhui Rntec Technology Co Ltd
Original Assignee
Anhui Rntec Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Anhui Rntec Technology Co Ltd filed Critical Anhui Rntec Technology Co Ltd
Priority to CN201820115425.0U priority Critical patent/CN207832961U/en
Application granted granted Critical
Publication of CN207832961U publication Critical patent/CN207832961U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Landscapes

  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)

Abstract

The utility model provides a kind of test device for PCB, belongs to PCB technical field of measurement and test.The test device includes frame, Anchor plate kit, needle bed component and control assembly, and control assembly is used to control the movement of Anchor plate kit and needle bed component, and PCB is placed between Anchor plate kit and needle bed component.The test device is by replacing two core components of pressing plate and needle bed, achieve the purpose that quick update or replaces test device, so that test device is suitable for different types of PCB, while effectively adapting to the quick update of PCB, the versatility and practicability of test device are improved.Pressing plate fixed plate and needle bed fixed plate can be skidded off out of test zone simultaneously, facilitate the replacement of pressing plate and needle bed.

Description

Test device for PCB
Technical field
The utility model is related to PCB technical field of measurement and test, more particularly to a kind of test device for PCB.
Background technology
With the development of science and technology, requirement of the people to properties of product is constantly promoted, the update of product is also getting faster, Performance the most outstanding is exactly electronic product.And electronic product is regenerated, it is meant that the update of printed circuit board (PCB), with this Meanwhile it needing to update to its test device.And the type of PCB is varied, often tests a kind of PCB and is required for replacement one Kind PCB test devices.Therefore a kind of higher PCB test devices of versatility are provided, to reducing the testing cost of PCB, improving and survey Examination efficiency is of great significance.
Utility model content
The purpose of this utility model is to provide a kind of test device for PCB, the test device by replace pressing plate and Two core components of needle bed have achieved the purpose that quick update or have replaced test device, improved the practicability of test device.
To achieve the goals above, the embodiment of the utility model provides a kind of survey for printing board PCB Trial assembly is set, which includes:Frame, frame include top, lower part and the interconnecting piece for connecting upper and lower part, on Portion, lower part and interconnecting piece surround test zone jointly;Anchor plate kit, Anchor plate kit are arranged in the top of test zone, Neng Gou It moves up and down in test zone, Anchor plate kit includes:Motor fixing plate is arranged in the lower section of the bottom plate on top;Pressing plate fixed plate, It is arranged below motor fixing plate, can be slided in the width direction of test zone;It is solid to be removably disposed in pressing plate for pressing plate On fixed board, it can be slided with pressing plate fixed plate;Needle bed component, needle bed component are arranged in the lower part of test zone, needle bed group Part includes:Needle bed fixed plate is arranged in the top of the top plate of lower part, can be slided in the width direction of test zone;Needle bed, It is removably disposed in needle bed fixed plate;Control assembly, control assembly include:Controller is being surveyed for controlling Anchor plate kit Up and down motion and pressing plate fixed plate and needle bed fixed plate are slided in the width direction of test zone in examination region;First pressure Sensor, for detecting whether pressing plate fixed plate reaches the first precalculated position;Second pressure sensor is fixed for detecting needle bed Whether plate reaches the second precalculated position.
Preferably, top, lower part and interconnecting piece are hollow structure, and Anchor plate kit further includes the first gas being arranged in top The piston rod of cylinder, the first cylinder passes through bottom plate, is connect with motor fixing plate by connector, for driving Anchor plate kit to transport up and down It is dynamic.
Preferably, Anchor plate kit further includes the motor being fixed above motor fixing plate, be arranged on bottom plate it is jagged, Motor passes through notch and can move up and down in notch, and motor is for driving pressing plate fixed plate in the width direction of test zone Upper sliding.
Preferably, it is provided with gear on motor fixing plate, rack matched with the gear, gear are provided in pressing plate fixed plate It is connect with the output end of motor;It is provided with the first sliding block in pressing plate fixed plate, is provided on motor fixing plate and the first sliding block The first sliding rail matched.
Preferably, needle bed component further includes the second cylinder being arranged below needle bed fixed plate, and the second cylinder is for driving Needle bed fixed plate is slided in the width direction of test zone.
Preferably, it is provided with the second sliding rail between needle bed fixed plate and top plate, is provided in needle bed fixed plate and is slided with second Matched second sliding block of rail.
Preferably, needle bed component further includes the support plate being arranged above needle bed, and support plate is for placing PCB.
Preferably, control assembly further includes control panel, and multiple mechanical buttons are provided on control panel.
Preferably, it is provided with multiple first positioning holes on pressing plate, is provided in pressing plate fixed plate and multiple first positioning holes Matched multiple first positioning pins.
Preferably, it is provided with multiple second location holes on needle bed, is provided in needle bed fixed plate and multiple second location holes Matched multiple second positioning pins.
Through the above technical solutions, the test device has reached quick by replacing two core components of pressing plate and needle bed Update or the purpose for replacing test device so that test device is suitable for different types of PCB, while effectively adapting to the fast of PCB Speed updates, and improves the versatility and practicability of test device.Pressing plate fixed plate and needle bed fixed plate can be from tests simultaneously It is skidded off in region, facilitates the replacement of pressing plate and needle bed.
The other feature and advantage of the utility model embodiment will give specifically in subsequent specific embodiment part It is bright.
Description of the drawings
Attached drawing is further understood to the utility model embodiment for providing, an and part for constitution instruction, With for explaining the utility model embodiment, but do not constituted to the utility model embodiment together with following specific implementation mode Limitation.In the accompanying drawings:
Fig. 1 is the structural schematic diagram of the test device for PCB of an embodiment according to the present utility model;
Fig. 2 shows the structural schematic diagrams of needle plate;
Fig. 3 shows the status diagram that pressing plate fixed plate is skidded off out of test zone;
Fig. 4 is that the structure of the Anchor plate kit of the test device for PCB of an embodiment according to the present utility model is shown It is intended to;
Fig. 5 shows the status diagram that needle bed fixed plate is skidded off out of test zone;
Fig. 6 is that the structure of the needle bed component of the test device for PCB of an embodiment according to the present utility model is shown It is intended to.
Specific implementation mode
The specific implementation mode of the utility model embodiment is described in detail below in conjunction with attached drawing.It should be understood that It is that specific embodiment described herein is merely to illustrate and explains the utility model embodiment is not limited to this reality Use new embodiment.
Fig. 1 is the structural schematic diagram of the test device for PCB of an embodiment according to the present utility model.Such as Fig. 1 Shown, in the utility model one embodiments, provides a kind of test device for PCB, which can wrap It includes:
Frame 10, the frame 10 may include top 11, lower part 12 and the connection for connecting top 11 and lower part 12 Portion 13, top 11, lower part 12 and interconnecting piece 13 surround test zone 14 jointly;
Anchor plate kit 20, the Anchor plate kit 20 are arranged on the top of test zone 14, can be in test zone 14 up and down Movement, Anchor plate kit 20 may include:
Motor fixing plate 21 is arranged in the lower section of the bottom plate 111 on top 11;
Pressing plate fixed plate 22 is arranged below motor fixing plate 21, can be slided in the width direction of test zone 14 It is dynamic;
Pressing plate 23 is removably disposed in pressing plate fixed plate 22, can be slided with pressing plate fixed plate 22;
Needle bed component 30, needle bed component 30 are arranged in the lower part of test zone 14, and needle bed component 30 includes:
Needle bed fixed plate 31 is arranged in the top of the top plate 121 of lower part 12, can be in the width direction of test zone 14 Sliding;
Needle bed 32 is removably disposed in needle bed fixed plate 31;
Control assembly 40, control assembly 40 include:
Controller, for controlling Anchor plate kit 20 up and down motion and pressing plate fixed plate 22 and needle bed in test zone 14 Fixed plate 31 is slided in the width direction of test zone 14;
First pressure sensor 41, for detecting whether pressing plate fixed plate 22 reaches the first precalculated position;
Second pressure sensor 42, for detecting whether needle bed fixed plate 31 reaches the second precalculated position.
Frame 10 for example can be by 12 integrally formed hollow structure of top 11, interconnecting piece 13 and lower part.
Fig. 2 shows the structural schematic diagrams of needle plate.In PCB test process, PCB be placed on pressing plate 23 and needle bed 32 it Between, it is provided with the pressing plate towards 32 side of needle bed on pressing plate 23 and tests probe, for being contacted with the upper surfaces PCB;It is set on needle bed 32 It is equipped with the needle bed towards 23 side of pressing plate and tests probe, for being contacted with PCB lower surface.
First pressure sensor 41 and second pressure sensor 42 can be for example arranged in the close test section of interconnecting piece 13 On the side plate in domain.When pressing plate fixed plate 22 reaches the first predeterminated position, pressing plate fixed plate 22 contacts first pressure sensor 41, First pressure sensor 41 experiences the pressure of pressing plate fixed plate 22, sends out by force signal.That is it is sensed in first pressure Device 41 shows that pressing plate fixed plate 22 has had arrived at the first predeterminated position when sending out by force signal.Similarly, it is sensed in second pressure Device 42 shows that needle bed fixed plate 31 has had arrived at the second predeterminated position when sending out by force signal.
In an embodiment of the utility model, such as the first gas being arranged along test device short transverse may be used Cylinder 24 drives up and down motion of the Anchor plate kit 20 in test zone 14.First cylinder 24 can be for example arranged on top 11 Interior, the piston rod of the first cylinder 24 passes through the bottom plate 111 on top, is connect with motor fixing plate 21 by connector 241, passes through work The stretching motion of stopper rod drives the up and down motion of Anchor plate kit 20.
In the alternative embodiments of the utility model, such as it can be arranged on frame 10 and be connect with Anchor plate kit 20 Manual rocker, with drive Anchor plate kit 20 move up and down.
Fig. 3 shows the status diagram that pressing plate fixed plate is skidded off out of test zone.Such as the drive of motor 25 may be used Dynamic pressure plate fixed plate 22 is slided in the width direction of test zone 14.Motor 25 can for example be fixed at motor fixing plate On 21, it is arranged jagged on bottom plate 111, motor 25 is passed through and notch and can be moved up and down in notch.
Fig. 4 is that the structure of the Anchor plate kit of the test device for PCB of an embodiment according to the present utility model is shown It is intended to.As shown in figure 3, in an embodiment of the utility model, gear 26 is provided on motor fixing plate 21, pressing plate is solid It is provided on fixed board 22 and is connect with the output end of motor 25 with 26 matched rack 27 of gear, gear 26;In pressing plate fixed plate 22 It is provided with the first sliding block 28, is provided on motor fixing plate 21 and 28 matched first sliding rail 29 of the first sliding block.Motor 25 operates, Gear 26 is moved along rack 27, drive the first sliding block 28 moved along the first sliding rail 29 so that pressing plate fixed plate 22 relative to Motor fixing plate 21 moves, and motor fixing plate 21 is fixedly connected with the bottom plate 111 on top 11, and pressing plate fixed plate 22 is skidded off/slid into Test zone 14.
Fig. 5 shows the status diagram that needle bed fixed plate is skidded off out of test zone.Fig. 6 is according to the present utility model The structural schematic diagram of the needle bed component of the test device for PCB of one embodiment.As shown in Figure 5 and Figure 6, new in this practicality In one embodiment of type, it is sliding in the width direction of test zone 14 that the second cylinder 33 driving needle bed fixed plate 31 may be used It is dynamic.Second cylinder 33 can be for example arranged below needle bed fixed plate 31.The top plate 121 of needle bed fixed plate 31 and lower part 12 it Between be provided with the second sliding rail 34, be provided in needle bed fixed plate 31 and 34 matched second sliding block 35 of the second sliding rail.Second cylinder 33 piston rod movement drives the second sliding block 35 in needle bed fixed plate 31 to be moved along the second sliding rail 34, and needle bed fixed plate 31 is slided Go out/slide into test zone 14.
Needle bed component 30 can also include the support plate 36 being arranged above needle bed 32, and support plate 36 is for placing PCB.
For the ease of the replacement of pressing plate 23 and needle bed 32, pressing plate 23 is detachably connected with pressing plate fixed plate 22, needle bed 32 with Needle bed fixed plate 31 is fixedly connected.It is fixed that multiple first can be provided in an embodiment of the utility model, on pressing plate 23 Position hole, setting and matched multiple first positioning pins of multiple first positioning holes, pressing plate 23 are fixed in pressing plate in pressing plate fixed plate 22 It is connect with pressing plate fixed plate 22 by bolt after the completion of being positioned on plate 22.Similarly, multiple second can be provided on needle bed 32 Location hole, be provided in needle bed fixed plate 31 with matched multiple second positioning pins of multiple second location holes, needle bed 32 is in needle bed It is connect with needle bed fixed plate 31 by bolt after the completion of being positioned in fixed plate 31.
In the alternative embodiments of the utility model, pressing plate 23 and needle bed 32 can be solid with pressing plate respectively by magnet Fixed board 22 and needle bed fixed plate 31 connect.
In an embodiment of the utility model, control assembly 40 can also include control panel 43, control panel 43 It is connect with controller, multiple mechanical buttons is provided on control panel 43.Control panel 43 can be for example arranged on top 11 On side plate far from interconnecting piece 13.
Mechanical button may include replacing pressing plate button and replacement needle bed button.When needing replacing pressing plate 23, press more Pressing plate button is changed, motor 25 operates, and pressing plate fixed plate 22 is sliding out of test zone 14 together with the pressing plate 23 needed replacing Go out;It after pressing plate 23 is replaced, presses replace pressing plate button again, motor 25 operates again, and pressing plate fixed plate 22 is together with more Pressing plate 23 after changing slides into test zone 14 together, when pressing plate fixed plate 22 touches first pressure sensor 41, the first pressure Force snesor 41 sends out compression signal, and motor 25 shuts down and locks, and the replacement of pressing plate 23 finishes.
When needing replacing needle bed 32, press replace needle bed button, the second cylinder 33 start, by needle bed fixed plate 33 together with The needle bed 31 needed replacing is skidded off out of test zone 14 together;When needle bed 31 replace after, press again replace needle bed by Button, the second cylinder 33 are again started up, and needle bed fixed plate 33 slides into test zone 14 together with the needle bed 31 after replacement, works as needle When bed fixed plate 33 touches second pressure sensor 42, second pressure sensor 42 sends out compression signal, and the second cylinder 33 stops It only works, the replacement of needle bed 31 finishes.
In an embodiment of the utility model, first pressure sensor 41 and second sensor 42 can be also used for examining Whether the position of pressure measurement plate fixed plate 22 and needle bed fixed plate 31 corresponds;
Controller can be also used for:
In the case where detecting that the position of pressing plate fixed plate 22 and needle bed fixed plate 31 does not correspond, motor 25 is controlled It is carried out at the same time reset with the second cylinder 33;
After motor 25 and the second cylinder 33 are carried out at the same time reset, first pressure sensor 41 and second sensor 42 are controlled Whether the position of detection pressing plate fixed plate 22 and needle bed fixed plate 31 corresponds again;
In the case where detecting that the position of pressing plate fixed plate 22 and needle bed fixed plate 31 does not correspond again, police is sent out It notifies breath, staff investigates failure.
The position of pressing plate fixed plate 22 and needle bed fixed plate 31, which corresponds, for example can be defined as needle bed fixed plate 31 Positioned at the underface of pressing plate fixed plate 22.In the case where pressing plate fixed plate 22 is identical with 31 size of needle bed fixed plate, position It sets and corresponds and can also be defined as, pressing plate fixed plate 22 and needle bed fixed plate 31 are in close to one end of interconnecting piece 13 and are same as On vertical line.Processor can for example pass through the pressure that comparison first pressure sensor 41 and second pressure sensor 42 are subject to Whether size is identical, judges whether the position of pressing plate fixed plate 22 and needle bed fixed plate 31 corresponds.
By the above embodiment, which is reached by replacing 32 two core components of pressing plate 23 and needle bed The quickly purpose of update or replacement test device so that test device is suitable for different types of PCB, while effectively adapting to PCB Quick update, improve the versatility and practicability of test device.Pressing plate fixed plate 22 and needle bed fixed plate 31 simultaneously It can be skidded off out of test zone 14, facilitate the replacement of pressing plate and needle bed.
The optional embodiment of the utility model example is described in detail above in association with attached drawing, still, the utility model is implemented The detail that example is not limited in the above embodiment can be right in the range of the technology design of the utility model embodiment The technical solution of the utility model embodiment carries out a variety of simple variants, these simple variants belong to the utility model embodiment Protection domain.
It is further to note that specific technical features described in the above specific embodiments, in not lance In the case of shield, it can be combined by any suitable means.In order to avoid unnecessary repetition, the utility model is implemented Example no longer separately illustrates various combinations of possible ways.
In addition, arbitrary combination can also be carried out between a variety of different embodiments of the utility model embodiment, as long as It equally should be considered as the utility model embodiment disclosure of that without prejudice to the thought of the utility model.

Claims (10)

1. a kind of test device for PCB, which is characterized in that the test device includes:
Frame (10), the frame (10) include top (11), lower part (12) and for connecting the top (11) and described The interconnecting piece (13) of lower part (12), the top (11), the lower part (12) and the interconnecting piece (13) surround test section jointly Domain (14);
Anchor plate kit (20), the Anchor plate kit (20) are arranged on the top of the test zone (14), can be in the test It moves up and down in region (14), the Anchor plate kit (20) includes:
Motor fixing plate (21) is arranged in the lower section of the bottom plate (111) of the top (11);
Pressing plate fixed plate (22), setting, can be in the width of the test zone (14) below the motor fixing plate (21) Square upward sliding;
Pressing plate (23) is removably disposed on the pressing plate fixed plate (22), can be with the pressing plate fixed plate (22) Sliding;
Needle bed component (30), the needle bed component (30) are arranged in the lower part of the test zone (14), the needle bed component (30) include:
Needle bed fixed plate (31) is arranged in the top of the top plate (121) of the lower part (12), can be in the test zone (14) Width direction on slide;
Needle bed (32) is removably disposed on the needle bed fixed plate (31);
Control assembly (40), the control assembly (40) include:
Controller, it is solid for controlling the Anchor plate kit (20) up and down motion and pressing plate in the test zone (14) Fixed board (22) and the needle bed fixed plate (31) are slided in the width direction of the test zone (14);
First pressure sensor (41), for detecting whether the pressing plate fixed plate (22) reaches the first precalculated position;
Second pressure sensor (42), for detecting whether the needle bed fixed plate (31) reaches the second precalculated position.
2. test device according to claim 1, which is characterized in that the top (11), the lower part (12) and described Interconnecting piece (13) is hollow structure, and the Anchor plate kit (20) further includes the first cylinder being arranged in the top (11) (24), the piston rod of first cylinder (24) passes through the bottom plate (111), is fixed with the motor by connector (241) Plate (21) connects, for driving the Anchor plate kit (20) to move up and down.
3. test device according to claim 2, which is characterized in that the Anchor plate kit (20) further includes being fixed at Motor (25) above the motor fixing plate (21), is arranged on the bottom plate (111) jagged, and the motor (25) passes through institute It states notch and can move up and down in the notch, the motor (25) is for driving the pressing plate fixed plate (22) described It is slided in the width direction of test zone (14).
4. test device according to claim 3, which is characterized in that be provided with gear on the motor fixing plate (21) (26), it is provided on the pressing plate fixed plate (22) and the gear (26) matched rack (27), the gear (26) and institute State the output end connection of motor (25);It is provided with the first sliding block (28), the motor fixing plate on the pressing plate fixed plate (22) (21) it is provided on and matched first sliding rail (29) of first sliding block (28).
5. test device according to claim 1, which is characterized in that the needle bed component (30) further includes being arranged described The second cylinder (33) below needle bed fixed plate (31), second cylinder (33) is for driving the needle bed fixed plate (31) to exist It is slided in the width direction of the test zone (14).
6. test device according to claim 5, which is characterized in that the needle bed fixed plate (31) and the top plate (121) it is provided with the second sliding rail (34) between, is provided on the needle bed fixed plate (31) and is matched with second sliding rail (34) The second sliding block (35).
7. test device according to claim 6, which is characterized in that the needle bed component (30) further includes being arranged described Support plate (36) above needle bed (32), the support plate (36) is for placing the PCB.
8. test device according to claim 1, which is characterized in that the control assembly (40) further includes control panel (43), multiple mechanical buttons are provided on the control panel (43).
9. test device according to claim 1, which is characterized in that be provided with multiple first positioning on the pressing plate (23) Hole is provided with and matched multiple first positioning pins of the multiple first positioning hole on the pressing plate fixed plate (22).
10. test device according to claim 1, which is characterized in that it is fixed to be provided with multiple second on the needle bed (32) Position hole, is provided with and matched multiple second positioning pins of the multiple second location hole on the needle bed fixed plate (31).
CN201820115425.0U 2018-01-24 2018-01-24 test device for PCB Active CN207832961U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201820115425.0U CN207832961U (en) 2018-01-24 2018-01-24 test device for PCB

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201820115425.0U CN207832961U (en) 2018-01-24 2018-01-24 test device for PCB

Publications (1)

Publication Number Publication Date
CN207832961U true CN207832961U (en) 2018-09-07

Family

ID=63394332

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201820115425.0U Active CN207832961U (en) 2018-01-24 2018-01-24 test device for PCB

Country Status (1)

Country Link
CN (1) CN207832961U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108241121A (en) * 2018-01-24 2018-07-03 安徽锐能科技有限公司 For the test device of PCB
CN114675167A (en) * 2022-05-26 2022-06-28 南京宏泰半导体科技有限公司 PCBA needle bed testing machine and testing method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108241121A (en) * 2018-01-24 2018-07-03 安徽锐能科技有限公司 For the test device of PCB
CN114675167A (en) * 2022-05-26 2022-06-28 南京宏泰半导体科技有限公司 PCBA needle bed testing machine and testing method

Similar Documents

Publication Publication Date Title
CN207832961U (en) test device for PCB
CN207263779U (en) A kind of ITO circuit test devices
CN108051732A (en) A kind of test device of integrated circuit plate
CN203811714U (en) Automatic testing tool for PCB boards
CN108241121A (en) For the test device of PCB
CN206301029U (en) Miniature keyboard test machine
CN202256400U (en) Test fixture
CN102841224A (en) Automatic jig applicable to testing PCB (printed circuit board)
CN206223930U (en) A kind of LED board automated test device
CN102419225B (en) Elasticity detection device for plate spring and method for detecting plate spring by using same
CN107943010B (en) FCT testing device based on motor simulation
CN205562748U (en) PCB board tester of keyboard test usefulness
CN105675924A (en) Detection fixture for ozone machine power panel
CN202794401U (en) Electronic product plug port performance testing device
CN108872829B (en) FCT test fixture
CN202837332U (en) Automatic jig applicable to testing PCB (printed circuit board)
CN215297454U (en) Servo driver mainboard test platform
CN202793777U (en) Reliability test device of automobile door handle
CN106768950A (en) Key durance test device and method
CN202093051U (en) Test clamp
CN212646063U (en) High-efficient keyboard button resilience detection equipment of feeling
CN213957543U (en) Circuit board testing jig
CN207965060U (en) A kind of FPC board test devices automatically switching feeding
CN204256121U (en) Circuit board detection device
CN210572242U (en) Pressure testing device

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant