CN215575485U

CN215575485U - LDMOS transistor performance detection device

Info

Publication number: CN215575485U
Application number: CN202121079969.4U
Authority: CN
Inventors: 张士雨; 陆庆文; 袁文杰
Original assignee: Dongkexin Microelectronics Nanjing Co ltd
Current assignee: Dongkexin Microelectronics Nanjing Co ltd
Priority date: 2021-05-19
Filing date: 2021-05-19
Publication date: 2022-01-18
Anticipated expiration: 2031-05-19

Abstract

The utility model discloses a device for detecting the performance of an LDMOS transistor, which comprises a detection box and a transistor body, wherein the top of an inner cavity of the detection box is fixedly connected with a detector, two sides of the inner cavity of the detection box are movably connected with supporting plates, two sides of the bottom of each supporting plate are fixedly connected with air cylinders, the bottoms of the air cylinders are fixedly connected with the inner wall of the detection box, and two sides of the top of each supporting plate are fixedly connected with connecting plates. According to the transistor fixing device, the transistor body is placed in the inner cavity of the placing groove, the turntable drives the upper end threaded rod to rotate by rotating the turntable, the upper end threaded rod drives the upper end belt pulley to rotate, the upper end belt pulley drives the lower end belt pulley to rotate by the driving belt, the lower end belt pulley drives the lower end threaded rod to rotate, the threaded rod moves to one side while rotating in the inner cavity of the supporting plate, and the threaded rod drives the clamp to move to one side until the clamp is in contact with the surface of the transistor body, so that the transistor body is fixed.

Description

LDMOS transistor performance detection device

Technical Field

The utility model relates to the technical field of LDMOS transistors, in particular to a device for detecting the performance of an LDMOS transistor.

Background

The LDMOS transistor has multiple purposes corresponding to higher breakdown voltage of the LDMOS transistor, and is mainly used for automobiles or high-power machines, wherein the performance of the LDMOS transistor needs to be detected after the LDMOS transistor is used for a long time, so a performance detection device of the LDMOS transistor needs to be used.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an LDMOS transistor performance detection device which has the advantage of convenience in positioning and solves the problems that the existing LDMOS transistor performance detection device is inconvenient to position when in use, so that the transistors are easy to shake during detection, and two transistors cannot be detected simultaneously, so that the working efficiency and the detection accuracy of the LDMOS transistor performance detection device are reduced.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a LDMOS transistor performance detection device, includes detection case and transistor body, the top fixedly connected with detector of detection incasement chamber, the equal swing joint in both sides of detection incasement chamber has the backup pad, the equal fixedly connected with cylinder in both sides of backup pad bottom, the bottom of cylinder and the inner wall fixed connection of detection case, the equal fixedly connected with connecting plate in both sides at backup pad top, the upper end of connecting plate inner chamber and the equal threaded connection of lower extreme have the threaded rod, the upper end the one end fixedly connected with carousel of threaded rod, the other end fixedly connected with anchor clamps of threaded rod, and fixedly connected with connecting rod between two anchor clamps, the threaded rod is close to the fixed surface that carousel one end is connected with the belt pulley, and the transmission is connected with the drive belt between two belt pulleys.

Preferably, the two sides of the bottom of the detector are both provided with connecting grooves, and the top of the transistor body extends to the inner cavities of the connecting grooves and is movably connected with the inner cavities of the connecting grooves.

Preferably, one side fixedly connected with stopper of backup pad, first spacing groove has all been seted up to the both sides of detection case inner chamber, the stopper is kept away from the one end of backup pad and is extended to the inner chamber of first spacing groove and with the inner chamber sliding connection of first spacing groove.

Preferably, the bottom fixedly connected with gag lever post of anchor clamps, the second spacing groove has all been seted up to the both sides at backup pad top, the gag lever post is kept away from the one end of anchor clamps and is extended to the inner chamber of second spacing groove and with the inner chamber sliding connection of second spacing groove.

Preferably, a placing groove is formed in the top of the supporting plate, and the transistor body is placed in an inner cavity of the placing groove.

Preferably, the front of the detection box is movably connected with a movable door through a hinge, and the right side of the front of the movable door is fixedly connected with a handle.

Preferably, a visual window is arranged on the front surface of the movable door, and the visual window is transparent glass.

Compared with the prior art, the utility model has the following beneficial effects:

1. the transistor body is placed in the inner cavity of the placing groove, the turntable drives the upper end threaded rod to rotate by rotating the turntable, the upper end threaded rod drives the upper end belt pulley to rotate, the upper end belt pulley drives the lower end belt pulley to rotate by the driving belt, the lower end threaded rod drives the lower end threaded rod to rotate by the rotating of the inner cavity of the supporting plate, the threaded rod drives the clamp to move to one side until the clamp is contacted with the surface of the transistor body, so that the transistor body is fixed, the cylinder drives the supporting plate to move upwards by starting the cylinder, the supporting plate drives the transistor body to move upwards to the inner cavity of the connecting groove, so that the transistor body is detected, and the problem that the transistor is easy to shake during detection due to the inconvenience in positioning of the existing LDMOS transistor performance detection device is solved, and the two transistors cannot be detected simultaneously, thereby reducing the working efficiency and the detection accuracy of the transistor performance detection device.

2. The transistor body is convenient to connect and detect by arranging the connecting groove, the effect of limiting the supporting plate is achieved by arranging the limiting block and the first limiting groove, the situation that the supporting plate is staggered during movement is avoided, the effect of limiting the clamp is achieved by arranging the limiting rod and the second limiting groove, the situation that the clamp is staggered during movement is avoided, the effect of conveniently placing and limiting the transistor body is achieved by arranging the placing groove, the situation that the transistor body is offset is avoided, the effect of conveniently taking and placing the transistor body is achieved by arranging the movable door, and the effect of conveniently observing the inner cavity of the detection box is achieved by arranging the visual window.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic front sectional view of the present invention;

FIG. 3 is a schematic view of a support plate according to the present invention;

FIG. 4 is a front view of a partial cross-sectional structure of a support plate according to the present invention.

In the figure: 1. a detection box; 2. a cylinder; 3. a support plate; 4. a detector; 5. a connecting plate; 6. a threaded rod; 7. a turntable; 8. a clamp; 9. a belt pulley; 10. a transmission belt; 11. a connecting rod; 12. a transistor body; 13. connecting grooves; 14. a limiting block; 15. a first limit groove; 16. a limiting rod; 17. a second limit groove; 18. a placement groove; 19. a movable door; 20. a visible window.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The detection box 1, the cylinder 2, the support plate 3, the detector 4, the connecting plate 5, the threaded rod 6, the turntable 7, the clamp 8, the belt pulley 9, the transmission belt 10, the connecting rod 11, the transistor body 12, the connecting groove 13, the limiting block 14, the first limiting groove 15, the limiting rod 16, the second limiting groove 17, the placing groove 18, the movable door 19 and the visible window 20 are all universal standard parts or parts known by technicians in the field, and the structure and the principle of the detection box can be known by technicians or conventional experimental methods.

Referring to fig. 1-4, a device for testing the performance of an LDMOS transistor comprises a testing box 1 and a transistor body 12, wherein the top of the inner cavity of the testing box 1 is fixedly connected with a tester 4, both sides of the inner cavity of the testing box 1 are movably connected with a supporting plate 3, both sides of the bottom of the supporting plate 3 are fixedly connected with air cylinders 2, the bottom of the air cylinders 2 is fixedly connected with the inner wall of the testing box 1, both sides of the top of the supporting plate 3 are fixedly connected with a connecting plate 5, the upper end and the lower end of the inner cavity of the connecting plate 5 are respectively connected with a threaded rod 6 in a threaded manner, one end of the upper end threaded rod 6 is fixedly connected with a turntable 7, the other end of the threaded rod 6 is fixedly connected with a clamp 8, a connecting rod 11 is fixedly connected between the two clamps 8, a belt pulley 9 is fixedly connected to the surface of the threaded rod 6 close to one end of the turntable 7, a transmission belt 10 is connected between the two belt pulleys 9, and the transistor body 12 is placed in the inner cavity of a placing groove 18, by rotating the turntable 7, the turntable 7 drives the upper end threaded rod 6 to rotate, the upper end threaded rod 6 drives the upper end belt pulley 9 to rotate, the upper end belt pulley 9 drives the lower end belt pulley 9 to rotate through the transmission belt 10, the lower end belt pulley 9 drives the lower end threaded rod 6 to rotate, the threaded rod 6 moves to one side while rotating in the inner cavity of the support plate 3, the threaded rod 6 drives the clamp 8 to move to one side until the clamp 8 contacts with the surface of the transistor body 12, so that the transistor body 12 is fixed, by starting the air cylinder 2, the air cylinder 2 drives the support plate 3 to move upwards, the support plate 3 drives the transistor body 12 to move upwards to the inner cavity of the connecting groove 13, so that the transistor body 12 is detected, and the problem that the existing LDMOS transistor performance detection device is inconvenient to position when in use and is prone to shake during detection is solved, and the two transistors cannot be detected simultaneously, thereby reducing the working efficiency and the detection accuracy of the transistor performance detection device.

In this embodiment, specifically, connecting groove 13 has all been seted up to the both sides of detector 4 bottom, and the top of transistor body 12 extends to the inner chamber of connecting groove 13 and with the inner chamber swing joint of connecting groove 13, through setting up connecting groove 13, has played the effect that conveniently connects and detect transistor body 12.

In this embodiment, specifically, one side fixedly connected with stopper 14 of backup pad 3, first spacing groove 15 has all been seted up to the both sides of 1 inner chamber of detection case, stopper 14 keep away from backup pad 3 one end extend to first spacing groove 15 the inner chamber and with first spacing groove 15's inner chamber sliding connection, through setting up stopper 14 and first spacing groove 15, played the spacing effect to backup pad 3, avoid backup pad 3 the condition that the dislocation appears when the motion.

In this embodiment, specifically, the bottom fixedly connected with gag lever post 16 of anchor clamps 8, second spacing groove 17 has all been seted up to the both sides at 3 tops of backup pad, and gag lever post 16 keeps away from the one end of anchor clamps 8 extend to the inner chamber of second spacing groove 17 and with the inner chamber sliding connection of second spacing groove 17, through setting up gag lever post 16 and second spacing groove 17, played the spacing effect to anchor clamps 8, avoid the condition that dislocation appears when the motion in anchor clamps 8.

In this embodiment, specifically, the top of the supporting plate 3 is provided with the placing groove 18, the transistor body 12 is placed in the inner cavity of the placing groove 18, and by arranging the placing groove 18, the effect of conveniently placing the transistor body 12 and limiting the transistor body 12 is achieved, and the situation that the transistor body 12 is displaced is avoided.

In this embodiment, specifically, the front of the detection box 1 is movably connected with a movable door 19 through a hinge, and the right side of the front of the movable door 19 is fixedly connected with a handle, so that the effect of conveniently taking and placing the transistor body 12 is achieved by arranging the movable door 19.

In this embodiment, specifically, the front surface of the movable door 19 is provided with the visual window 20, and the visual window 20 is transparent glass, so that the effect of conveniently observing the inner cavity of the detection box 1 is achieved by arranging the visual window 20.

When the device is used, the electric element is started through an external controller, firstly, the transistor body 12 is placed in the inner cavity of the placement groove 18, the turntable 7 is rotated to drive the upper end threaded rod 6 to rotate, the upper end threaded rod 6 drives the upper end belt pulley 9 to rotate, the upper end belt pulley 9 drives the lower end belt pulley 9 to rotate through the transmission belt 10, the lower end belt pulley 9 drives the lower end threaded rod 6 to rotate, the threaded rod 6 moves to one side while rotating in the inner cavity of the support plate 3, the threaded rod 6 drives the clamp 8 to move to one side until the clamp 8 is in contact with the surface of the transistor body 12, so that the transistor body 12 is fixed, the air cylinder 2 is started to drive the support plate 3 to move upwards, the support plate 3 drives the transistor body 12 to move upwards to the inner cavity of the connection groove 13, so that the transistor body 12 is detected, and the problem that the existing LDMOS transistor performance detection device is inconvenient to position when in use is solved, the transistor is easy to shake during detection, and the two transistors cannot be detected simultaneously, so that the working efficiency and the detection accuracy of the transistor performance detection device are reduced.

The standard parts used in the present application document can be purchased from the market, and can be customized according to the description of the specification and the accompanying drawings, the specific connection mode of each part adopts the conventional means of mature bolt, rivet, welding and the like in the prior art, the machines, parts and equipment adopt the conventional models in the prior art, the control mode is automatically controlled by a controller, the control circuit of the controller can be realized by simple programming of technicians in the field, the control circuit belongs to the common knowledge in the field, and the present application document is mainly used for protecting mechanical devices, so the control mode and the circuit connection are not explained in detail in the present application.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. An LDMOS transistor performance detection device comprises a detection box (1) and a transistor body (12), and is characterized in that: the detector (4) is fixedly connected to the top of the inner cavity of the detection box (1), the supporting plates (3) are movably connected to the two sides of the inner cavity of the detection box (1), the air cylinders (2) are fixedly connected to the two sides of the bottom of the supporting plates (3), the bottom of the air cylinders (2) is fixedly connected to the inner wall of the detection box (1), the connecting plates (5) are fixedly connected to the two sides of the top of the supporting plates (3), threaded rods (6) are connected to the upper end and the lower end of the inner cavity of the connecting plates (5) in a threaded manner, a turntable (7) is fixedly connected to one end of each threaded rod (6), clamps (8) are fixedly connected to the other end of each threaded rod (6), a connecting rod (11) is fixedly connected between the two clamps (8), and a belt pulley (9) is fixedly connected to the surface of one end, close to each turntable (7), of each threaded rod (6), and a transmission belt (10) is connected between the two belt pulleys (9) in a transmission way.

2. The device for testing the performance of an LDMOS transistor set forth in claim 1 wherein: connecting grooves (13) are formed in two sides of the bottom of the detector (4), and the top of the transistor body (12) extends to the inner cavity of the connecting grooves (13) and is movably connected with the inner cavity of the connecting grooves (13).

3. The device for testing the performance of an LDMOS transistor set forth in claim 1 wherein: one side fixedly connected with stopper (14) of backup pad (3), first spacing groove (15) have all been seted up to the both sides of detection case (1) inner chamber, the one end that backup pad (3) were kept away from in stopper (14) extends to the inner chamber of first spacing groove (15) and with the inner chamber sliding connection of first spacing groove (15).

4. The device for testing the performance of an LDMOS transistor set forth in claim 1 wherein: the bottom fixedly connected with gag lever post (16) of anchor clamps (8), second spacing groove (17) have all been seted up to the both sides at backup pad (3) top, the one end that anchor clamps (8) were kept away from in gag lever post (16) extends to the inner chamber of second spacing groove (17) and with the inner chamber sliding connection of second spacing groove (17).

5. The device for testing the performance of an LDMOS transistor set forth in claim 1 wherein: a placing groove (18) is formed in the top of the supporting plate (3), and the transistor body (12) is placed in an inner cavity of the placing groove (18).

6. The device for testing the performance of an LDMOS transistor set forth in claim 1 wherein: the front side of the detection box (1) is movably connected with a movable door (19) through a hinge, and the right side of the front side of the movable door (19) is fixedly connected with a handle.

7. The device for testing the performance of an LDMOS transistor of claim 6, wherein: the front surface of the movable door (19) is provided with a visual window (20), and the visual window (20) is transparent glass.