Single-path test tool of air pressure sensor

Abstract

The utility model belongs to the technical field of chip testing, and relates to a one-way testing tool of a baroceptor, which comprises a base, a mounting cavity for placing the baroceptor to be tested, support steps respectively arranged on two sides of the mounting cavity to support pins of the baroceptor to be tested, and a base plate of the mounting cavity is provided with a base air hole in a penetrating manner; the base is connected to the bottom face of the base in a sealed mode, a base air hole of the base is communicated with the base air hole, and an air tap is installed on the side portion of the base and communicated with the base air hole. And the positioning block is hermetically connected to the upper surface of the base, and a test plate is supported on the upper surface of the positioning block. According to the utility model, the product structure is reasonable and ingenious, when the air pressure sensor is tested, the tool can be conveniently and rapidly disassembled, the upper tool assembly and the lower tool assembly are disassembled and assembled through the clamping jaw, the disassembly and assembly are convenient and rapid, the connection between the clamping jaw and the upper tool assembly is realized through the positioning rod, and the work efficiency is improved. A locking hook at the lower end of the clamping jaw is connected with a locking rod of the lower tool assembly.

Description

Technical Field

[0001] The utility model belongs to the technical field of chip testing and relates to a single-channel testing tool for an air pressure sensor. Background Art

[0002] Air pressure sensors are instruments used to measure the absolute pressure of gas and are widely used in automobiles, oil pumps, refrigeration, air conditioning equipment, air compressors and other application fields.

[0003] Before using the air pressure sensor, it is necessary to test whether its accuracy meets the application requirements. The existing testing method generally provides a vacuum pipe with an air pressure value, detects the air pressure value of the vacuum pipe through the air pressure sensor, and manually determines whether the air pressure sensor is qualified by the operator. The existing test fixture has a complex structure, and it is difficult to place the air pressure sensor in the test fixture conveniently and quickly during testing. Summary of the invention

[0004] In view of the above problems, the utility model provides a single-channel test fixture for an air pressure sensor. The test fixture has a reasonable and ingenious structure and can conveniently and quickly perform reliable and stable tests on the air pressure sensor.

[0005] According to the technical solution of the utility model: a single-channel test tool for an air pressure sensor, characterized in that it includes:

[0006] The base is provided with an installation cavity for placing the air pressure sensor to be tested, support steps are respectively provided on both sides of the installation cavity to support the pins of the air pressure sensor to be tested, and the bottom plate of the installation cavity is provided with a base air hole;

[0007] A base is sealed and connected to the bottom surface of the base, the base air holes of the base are connected to the base air holes, and the side of the base is equipped with an air nozzle, which is connected to the base air holes;

[0008] A positioning block is sealed and connected to the upper surface of the base, the upper surface of the positioning block supports and sets a test board, the bottom surface of the test board is fixedly connected to a probe seat, a probe is installed on the probe seat, the upper end of the probe passes through the test board and extends upward, the lower end of the probe extends to the bottom of the probe seat and contacts with the pin of the air pressure sensor to be tested, and the probe seat is placed in the positioning hole of the positioning block;

[0009] A pressing plate, pressed against the test plate;

[0010] The test plate and the positioning block are fixed to the bottom surface of the pressing plate in sequence to form an upper tooling assembly, and the base is fastened to the base to form a lower tooling assembly. The upper tooling assembly and the lower tooling assembly are fastened and connected by clamping claws.

[0011] As a further improvement of the utility model, a first O-ring is arranged in the annular groove on the bottom surface of the base, the first O-ring is pressed and sealed with the upper surface of the base, and the air hole of the base is placed at the center of the first O-ring;

[0012] A second O-ring is arranged in the annular groove on the top surface of the base, the second O-ring is pressed and sealed with the bottom surface of the positioning block, and the probe seat passes through the second O-ring.

[0013] As a further improvement of the utility model, the test plate is fastened to the probe seat by bolts, the bottom surface of the pressure plate is structured with a receiving cavity, and the head of the bolt and the upper end of the probe are both placed in the receiving cavity;

[0014] A fourth O-ring is arranged in the annular groove on the bottom surface of the pressing plate, and the fourth O-ring is pressed tightly against the upper surface of the testing plate.

[0015] As a further improvement of the utility model, the upper end of the clamping claw is constructed with an overlapping portion, which cooperates with the supporting plate on the side of the pressure plate, and the lower end of the clamping claw is constructed with a locking hook, which cooperates with the locking rod arranged on the base.

[0016] As a further improvement of the utility model, the pressing plate, the test plate, the positioning block, the base and the pedestal are all arranged in an I-shape, and the overlapping parts are arranged in the grooves on both sides of the pressing plate;

[0017] The two ends of the locking rod are respectively inserted into the mounting holes at the two ends of the base groove body, and the locking hook is locked on the locking rod.

[0018] As a further improvement of the utility model, the clamping claw is provided with a horizontal through hole, the positioning block is provided with a positioning block through hole, and the positioning block through hole and the horizontal through hole are connected by a positioning rod.

[0019] The technical effect of the utility model is that the product structure of the utility model is reasonable and ingenious. When testing the air pressure sensor, the tooling can be disassembled and assembled conveniently and quickly. The disassembly and assembly of the upper tooling assembly and the lower tooling assembly are achieved through the clamping claws, and the disassembly and assembly are convenient and quick. The connection between the clamping claw and the upper tooling assembly is achieved through the positioning rod, and the locking hook at the lower end of the clamping claw is connected to the locking rod of the lower tooling assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the utility model.

[0021] Figure 2 for Figure 1 Left view of .

[0022] Figure 3 for Figure 1 AA section view.

[0023] Figure 4 It is an exploded view of the utility model. DETAILED DESCRIPTION

[0024] The specific implementation of the utility model is further described below in conjunction with the accompanying drawings.

[0025] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. The described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0026] Figure 1-4 It includes a base 1, an installation cavity 1-1, a support step 1-2, a base air hole 1-3, a base 2, a base air hole 2-1, an air nozzle 2-2, a locking rod 2-3, a positioning block 3, a positioning block through hole 3-1, a positioning rod 3-2, a probe seat 4, a pressure plate 5, a support plate 5-1, a claw 6, a lap portion 6-1, a locking hook 6-2, a pressure sensor to be tested 7, a first O-ring 8, a test plate 9, a probe 10, a probe cover 11, a second O-ring 12, a third O-ring 13, a bolt 14, a fourth O-ring 15, etc.

[0027] like Figure 1-4 As shown, the utility model is a single-channel test tool for an air pressure sensor, comprising:

[0028] The base 1 is provided with an installation cavity 1-1 for placing the air pressure sensor 7 to be tested, and supporting steps 1-2 are respectively provided on both sides of the installation cavity 1-1 to support the pins of the air pressure sensor 7 to be tested, and the bottom plate of the installation cavity 1-1 is provided with a base air hole 1-3 through it.

[0029] The base 2 is sealed and connected to the bottom surface of the base 1, the base air hole 2-1 of the base 2 is connected to the base air hole 1-3, and the side of the base 2 is installed with an air nozzle 2-2, and the air nozzle 2-2 is connected to the base air hole 2-1;

[0030] A positioning block 3 is sealed and connected to the upper surface of the base 1. The upper surface of the positioning block 3 supports and sets a test board 9. The bottom surface of the test board 9 is fixedly connected to a probe seat 4. A probe 10 is installed on the probe seat 4. The upper end of the probe 10 extends upward through the test board 9. The lower end of the probe 10 extends to the bottom of the probe seat 4 and contacts with the pin of the air pressure sensor 7 to be tested. The probe seat 4 is placed in the positioning hole of the positioning block 3.

[0031] The pressing plate 5 is pressed tightly against the test plate 9;

[0032] The test plate 9 and the positioning block 3 are fixed to the bottom surface of the pressing plate 5 in sequence to form an upper tooling assembly, and the base 1 and the base 2 are fastened together to form a lower tooling assembly. The upper tooling assembly and the lower tooling assembly are fastened together by the clamping claws 6.

[0033] A first O-ring 8 is arranged in the annular groove on the bottom surface of the base 1, the first O-ring 8 is pressed and sealed with the upper surface of the base 2, and the base air hole 1-3 is placed at the center of the first O-ring 8;

[0034] A second O-ring 12 is arranged in the annular groove on the top surface of the base 1 . The second O-ring 12 is pressed and sealed with the bottom surface of the positioning block 3 . The probe seat 4 passes through the second O-ring 12 .

[0035] The test plate 9 is fastened to the probe seat 4 by bolts 14. The bottom surface of the pressing plate 5 is configured with a receiving cavity. The head of the bolt 14 and the upper end of the probe 10 are both placed in the receiving cavity. The upper end of the probe 10 is sleeved with a probe cover 11.

[0036] A fourth O-ring 15 is arranged in the annular groove on the bottom surface of the pressing plate 5 , and the fourth O-ring 15 is pressed tightly against the upper surface of the testing plate 9 .

[0037] like Figure 3 , 4 As shown, the upper end of the clamping claw 6 is configured with a lap joint 6-1, which cooperates with the support plate 5-1 on the side of the pressing plate 5, and the lower end of the clamping claw 6 is configured with a locking hook 6-2, which cooperates with the locking rod 2-3 provided on the base 2. A notch is configured on the clamping claw 6 corresponding to the upper position of the locking hook 6-2, so that when the upper tooling assembly is connected with the lower tooling assembly, it is convenient for the operator to operate from the notch.

[0038] The pressing plate 5, the test plate 9, the positioning block 3, the base 1 and the base 2 are all arranged in an I-shape, and the overlapping parts 6-1 are arranged in the grooves on both sides of the pressing plate 5;

[0039] The two ends of the locking rod 2 - 3 respectively penetrate through the mounting holes at the two ends of the groove body of the base 2 , and the locking hook 6 - 2 is locked on the locking rod 2 - 3 .

[0040] The clamping claw 6 is provided with a horizontal through hole, and the positioning block 3 is provided with a positioning block through hole 3 - 1 , and the positioning block through hole 3 - 1 and the horizontal through hole are connected via a positioning rod 3 - 2 .

[0041] like Figures 1 to 4As shown, when the product of the utility model is working, first loosen the upper tooling assembly and the lower tooling assembly. At this time, you only need to take out the positioning rod 3-2 to quickly remove the claw 6 from the tooling, and separate the upper tooling assembly from the lower tooling assembly; then place the air pressure sensor 7 to be tested in the installation cavity 1-1 of the base 1, and make the lower end of the probe 10 of the test board 9 contact and cooperate with the pin of the air pressure sensor 7 to be tested. It can be understood that in order to ensure the reliable fitting connection between the upper tooling assembly and the lower tooling assembly, a vertically extending guide positioning column is fixedly arranged on the upper surface of the base 1 corresponding to the two sides of the installation cavity 1-1, and a positioning circular hole and a waist-shaped hole are respectively arranged on the positioning block 3 corresponding to the two guide positioning columns. When the upper tooling assembly and the lower tooling assembly are molded together, one of the guide positioning columns is first matched with the positioning circular hole. At this time, since the waist-shaped hole has a certain length, it can be conveniently and quickly matched with the other guide positioning column reliably, so that the upper tooling assembly and the lower tooling assembly can be reliably molded together, and then the upper tooling assembly and the lower tooling assembly are locked and fixed by the claws 6, that is, the upper tooling assembly and the lower tooling assembly seal and fix the air pressure sensor 7 to be tested, that is, the test preparation is completed.

[0042] Finally, it should be noted that the above specific implementation methods are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to examples, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A single-channel test tool for an air pressure sensor, characterized in that: include: The base (1) is provided with a mounting cavity (1-1) for placing the air pressure sensor (7) to be tested, support steps (1-2) are respectively provided on both sides of the mounting cavity (1-1) for supporting pins of the air pressure sensor (7) to be tested, and a base air hole (1-3) is provided through the bottom plate of the mounting cavity (1-1); A base (2) is sealed and connected to the bottom surface of the base (1); a base air hole (2-1) of the base (2) is connected to the base air hole (1-3); a gas nozzle (2-2) is installed on the side of the base (2); the gas nozzle (2-2) is connected to the base air hole (2-1); A positioning block (3) is sealingly connected to the upper surface of the base (1); the upper surface of the positioning block (3) supports a test board (9); the bottom surface of the test board (9) is fixedly connected to a probe seat (4); a probe (10) is mounted on the probe seat (4); the upper end of the probe (10) passes through the test board (9) and extends upward; the lower end of the probe (10) extends to the bottom of the probe seat (4) and contacts the pin of the air pressure sensor (7) to be tested; the probe seat (4) is placed in the positioning hole of the positioning block (3); A pressing plate (5) is pressed tightly against the test plate (9); The test plate (9) and the positioning block (3) are fixed to the bottom surface of the pressing plate (5) in sequence to form an upper tooling assembly, and the base (1) and the base (2) are fastened together to form a lower tooling assembly. The upper tooling assembly and the lower tooling assembly are fastened together by means of a clamping claw (6).

2. The single-channel test fixture for the air pressure sensor according to claim 1, characterized in that: A first O-ring (8) is arranged in the annular groove on the bottom surface of the base (1), the first O-ring (8) is pressed and sealed against the upper surface of the base (2), and the base air hole (1-3) is arranged at the center of the first O-ring (8); A second O-ring (12) is arranged in the annular groove on the top surface of the base (1), the second O-ring (12) is pressed and sealed against the bottom surface of the positioning block (3), and the probe seat (4) passes through the second O-ring (12).

3. The single-channel test fixture for the air pressure sensor according to claim 1, characterized in that: The test plate (9) and the probe seat (4) are fastened together by bolts (14); the bottom surface of the pressure plate (5) is configured with a receiving cavity, and the head of the bolt (14) and the upper end of the probe (10) are both placed in the receiving cavity; A fourth O-ring (15) is arranged in the annular groove on the bottom surface of the pressing plate (5), and the fourth O-ring (15) is pressed tightly against the upper surface of the testing plate (9).

4. The single-channel test fixture for the air pressure sensor according to claim 1, characterized in that: The upper end of the clamping claw (6) is configured with an overlapped portion (6-1), the overlapped portion (6-1) cooperates with a support plate (5-1) on the side of the pressure plate (5), and the lower end of the clamping claw (6) is configured with a locking hook (6-2), the locking hook (6-2) cooperates with a locking rod (2-3) provided on the base (2).

5. The single-channel test fixture for the air pressure sensor as claimed in claim 4, characterized in that: The pressing plate (5), the test plate (9), the positioning block (3), the base (1) and the seat (2) are all arranged in an I-shape, and the overlapping parts (6-1) are arranged in grooves on both sides of the pressing plate (5); The two ends of the locking rod (2-3) respectively penetrate through the mounting holes at the two ends of the groove body of the base (2), and the locking hook (6-2) is locked on the locking rod (2-3).

6. The single-channel test fixture for the air pressure sensor according to claim 5, characterized in that: The clamping claw (6) is provided with a horizontal through hole, the positioning block (3) is provided with a positioning block through hole (3-1), and the positioning block through hole (3-1) and the horizontal through hole are connected via a positioning rod (3-2).

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