Gas sensitive element batch air aging and pairing device

Abstract

The utility model relates to the technical field of gas sensitive elements, in particular to a gas sensitive element batch air aging and pairing device, which comprises a clamp base and a top plate arranged at the upper end of the clamp base, a circuit board is arranged on the clamp base, a gas sensitive element is arranged between the clamp base and the top plate, and the circuit board is used for an aging test of the gas sensitive element. The top plate is provided with a press-fitting assembly used for clamping and fixing the gas sensitive element. According to the utility model, a complete diaphragm of the gas sensitive element is placed on the circuit board without being cut by arranging the press-fitting assembly, and after the top plate is fixed at the top end of the base clamp, the gas sensitive element on the circuit board can be pressed and fixed by the pressing plate and the spring probe on the top plate; original hard contact is changed into current spring probe press-fit soft contact, so that the sensitive element electrode is protected from being pressed and falling off.

Description

Technical Field

[0001] The utility model relates to the technical field of gas-sensitive elements, in particular to a batch air aging and pairing device for gas-sensitive elements. Background Technique

[0002] Gas-sensitive elements are an important part of sensors. They can sensitively sense the types of gases and information related to their concentrations, and convert them into electrical signals or other required forms of information for output, so as to realize the detection of gases. During the manufacturing process of gas-sensitive elements, the sensitive elements need to be placed in the air and energized for aging. When energized, the sensitive resistor will generate high temperature. Placing it in the air for a period of time under this condition will improve the conductivity and stability of the sensitive element and enhance the ability to resist external interference. The hot air aging test is a common material aging test, which mainly evaluates the durability and performance stability of materials by simulating the aging situation of materials under the action of high temperature and atmospheric oxygen.

[0003] At present, the existing aging test is to age a single sensitive element. Most of the existing aging devices cannot measure the resistance value and perform pairing. It is necessary to separately test the resistance of the sensitive elements through subsequent manual operations, record and perform pairing. Moreover, the existing fixtures will press off the upper electrodes of the gas-sensitive elements, causing losses. Therefore, in order to improve production efficiency and ensure production quality, there is an urgent need to design a batch air aging and pairing device that is simple and effective and can ensure product quality.

[0004] Therefore, a batch air aging and pairing device for gas-sensitive elements is proposed. Content of the Utility Model

[0005] The purpose of the utility model is to provide a batch air aging and pairing device for gas-sensitive elements, so as to solve the problems in the above background technique that most of the existing aging devices cannot measure the resistance value and perform pairing, and it is necessary to separately test the resistance of the sensitive elements through subsequent manual operations, record and perform pairing, and the existing fixtures will press off the upper electrodes of the gas-sensitive elements, causing losses.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A batch air aging and pairing device for gas-sensitive elements, including a fixture base and a top plate arranged at the upper end of the fixture base. A circuit board is arranged on the fixture base. A gas-sensitive element is placed between the fixture base and the top plate, and the circuit board is used for aging test of the gas-sensitive element. A pressing assembly for clamping and fixing the gas-sensitive element is arranged on the top plate. The pressing assembly includes a pressing plate arranged on the top plate for pressing the gas-sensitive element, and a plurality of spring probes for cooperating with the pressing plate to press are arranged on the pressing plate. A limiting assembly for stabilizing the gas-sensitive element is also arranged on the fixture base.

[0007] Preferably, a placement table is provided on the fixture base, and the circuit board is located on the placement table. A positioning post for limiting the circuit board is fixedly installed on the placement table, and the positioning post movably penetrates through the circuit board.

[0008] Preferably, the limiting component includes a limiting block provided on the fixture base, and a through hole for a bolt to penetrate is provided on the limiting block.

[0009] Preferably, bolt holes for fixing the limiting block are provided on the fixture base, and the radius of the bolt holes is smaller than the radius of the through holes.

[0010] Preferably, positioning pins for positioning the top plate are provided on the fixture base, and pin holes for the positioning pins to penetrate are provided on the top plate.

[0011] Preferably, a receiving groove for placing the pressing plate is provided on the top plate. The pressing plate is located in the receiving groove, and the pressing plate is connected to the top plate by bolts.

[0012] Preferably, a soft gasket is provided between the top plate and the pressing plate, and a groove for placing the soft gasket is provided on the top plate.

[0013] Preferably, a plurality of heat dissipation holes are provided on the top plate, and heat insulation foot pads are provided at the bottom end of the fixture base.

[0014] Advantages of the present utility model:

[0015] By providing a pressing assembly in the present utility model, the complete diaphragm of the gas-sensitive element does not need to be cut and placed on the circuit board. After the top plate is fixed to the top end of the base fixture, the pressing plate and the spring probe on the top plate can press and fix the gas-sensitive element on the circuit board;

[0016] By providing spring probes, the original hard contact is changed to the soft contact of the spring probe pressing, thereby protecting the electrodes of the sensitive elements from being pressed off. When the device can age the entire complete substrate of the gas-sensitive element, there is no need to cut, thus improving the efficiency. And during the test process, the resistance of the sensitive elements can be monitored in real time. Through this means, resistance pairing can be carried out, without subsequent manual test pairing, further improving the efficiency. Description of the Drawings

[0017] In order to more clearly illustrate the technical solutions in the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only those of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0018] Figure 1Schematic diagram of the overall structure of a batch air aging and pairing device for gas sensor elements according to an embodiment of the present utility model;

[0019] Figure 2 Schematic diagram of the circuit board structure of a batch air aging and pairing device for gas sensor elements according to an embodiment of the present utility model;

[0020] Figure 3 Schematic diagram of the base structure of a batch air aging and pairing device for gas sensor elements according to an embodiment of the present utility model;

[0021] Figure 4 Schematic diagram of the pressing plate structure of a batch air aging and pairing device for gas sensor elements according to an embodiment of the present utility model;

[0022] Figure 5 Schematic diagram of the top plate structure of a batch air aging and pairing device for gas sensor elements according to an embodiment of the present utility model.

[0023] The markings in the figure are: 1, base; 2, top plate; 3, circuit board; 4, gas sensor element; 5, pressing plate; 6, spring probe; 7, placement table; 8, positioning post; 9, limiting block; 10, through hole; 11, bolt hole; 12, positioning pin; 13, pin hole; 14, accommodating groove; 15, soft gasket; 16, groove; 17, heat dissipation hole; 18, heat insulation foot pad. Detailed implementation manners

[0024] To make the objectives, technical solutions and advantages of the present utility model clearer and more understandable, the present utility model will be further described in detail below in conjunction with specific embodiments.

[0025] It should be noted that unless otherwise defined, the technical terms or scientific terms used in the present utility model should have the ordinary meanings understood by those with ordinary skills in the field to which the present utility model belongs. The "first", "second" and similar terms used in the present utility model do not indicate any order, quantity or importance, but are only used to distinguish different components. The terms such as "include" or "comprise" mean that the elements or objects appearing before this term cover the elements or objects listed after this term and their equivalents, without excluding other elements or objects. The terms such as "connect" or "be connected" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The terms such as "upper", "lower", "left" and "right" are only used to indicate relative positional relationships, and when the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0026] Such as Figures 1 to 5As shown in the figure, a specific embodiment of the present utility model provides a batch air aging and pairing device for gas-sensitive elements, which includes a fixture base 1 and a top plate 2 provided at the upper end of the fixture base 1. A circuit board 3 is provided on the fixture base 1. A gas-sensitive element 4 is placed between the fixture base 1 and the top plate 2, and the circuit board 3 is used for the aging test of the gas-sensitive element 4. A pressing assembly for clamping and fixing the gas-sensitive element 4 is provided on the top plate 2. By setting the pressing assembly to press the gas-sensitive element 4, its stability during the aging test can be ensured, and at the same time, it is protected. The pressing assembly includes a pressing plate 5 provided on the top plate 2 for pressing the gas-sensitive element 4, and a plurality of spring probes 6 for cooperating with the pressing plate 5 to perform pressing are provided on the pressing plate 5. It also includes a limiting assembly provided on the fixture base 1 for stabilizing the gas-sensitive element 4. By setting the limiting assembly, the gas-sensitive element 4 can be limited to maintain its stability.

[0027] As Figures 1 to 5 shown, specifically, a placement table 7 is opened on the fixture base 1, and the circuit board 3 is located on the placement table 7. A positioning post 8 for limiting the circuit board 3 is fixedly installed on the placement table 7, and the positioning post 8 movably penetrates the circuit board 3. When performing an aging test on the gas-sensitive element 4, the positive and negative electrodes of the circuit board 3 are connected with wires, and then it is placed in the fixture, located on the placement table 7, and the positioning post 8 penetrates the circuit board 3, so that the circuit board 3 maintains a stable position. Then, the complete gas-sensitive element 4 covered with electrodes is placed on the circuit board 3 with its electrode surface facing down. During this process, there is no need to cut the complete gas-sensitive element 4, and batch aging treatment can be directly carried out. The limiting assembly includes a limiting block 9 provided on the fixture base 1. A through hole 10 for a bolt to penetrate is opened on the limiting block 9. A bolt hole 11 for fixing the limiting block 9 is provided on the fixture base 1, and the radius of the bolt hole 11 is smaller than the radius of the through hole 10. After the gas-sensitive element 4 is placed, the gas-sensitive element 4 can be limited in position by the provided limiting block 9. The setting that the radius of the bolt hole 11 is smaller than the radius of the through hole 10 allows the limiting block 9 to have a space for position adjustment when the bolt passes through the through hole 10 and enters the bolt hole 11, so as to better limit the gas-sensitive element 4.

[0028] As Figures 1 to 5As shown in the figure, specifically, the fixture base 1 is provided with a positioning pin 12 for positioning the top plate 2. The top plate 2 is provided with a pin hole 13 for the positioning pin 12 to penetrate through. The top plate 2 is provided with a receiving groove 14 for placing the pressing plate 5. The pressing plate 5 is located in the receiving groove 14, and the pressing plate 5 and the top plate 2 are connected by bolts. A soft gasket 15 is provided between the top plate 2 and the pressing plate 5. The top plate 2 is provided with a groove 16 for placing the soft gasket 15. After the gas-sensitive element 4 is positioned, the top plate 2 carrying the pressing plate 5 is placed on the top of the fixture base 1. During this process, the positioning pin 12 on the fixture base 1 penetrates through the pin hole 13, so as to position the top plate 2 on the top of the fixture base 1. After the top plate 2 is placed on the top of the fixture base 1, the top plate 2 is fixed on the top of the fixture base 1 by screws. The top plate 2 and the spring probe 6 press the gas-sensitive element 4 on the circuit board 3. The spring probe 6 squeezes and clamps the gas-sensitive element 4 at the bottom. The spring probe 6 has good elastic potential energy, so that the gas-sensitive element 4 can be well protected during the clamping process, and the electrodes on the gas-sensitive element 4 are not damaged. Then, the power supply is turned on and a certain voltage is input to perform air aging treatment on a whole film. At this time, the data collector in the external data acquisition module collects the current data of the sensitive element in real time, so as to detect its change situation at all times, and the computer performs data processing to realize the resistance pairing of the sensitive element. The top plate 2 is provided with a number of heat dissipation holes 17, and the bottom end of the fixture base 1 is provided with heat insulation foot pads 18. The setting of the heat dissipation holes 17 can dissipate the heat generated in the device.

[0029] Those of ordinary skill in the art should understand that any discussion of the above embodiments is exemplary only and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples; under the idea of the present invention, the technical features in the above embodiments or different embodiments can also be combined, and the steps can be implemented in any order, and there are many other variations in different aspects of the present invention as described above, which are not provided in detail for the sake of brevity.

[0030] The present invention is intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A batch air aging and pairing device for gas sensitive elements, comprising a fixture base (1) and a top plate (2) provided at the upper end of the fixture base (1), characterized in that, A circuit board (3) is provided on the fixture base (1). A gas sensor element (4) is placed between the fixture base (1) and the top plate (2), and the circuit board (3) is used for the aging test of the gas sensor element (4). A press-fitting assembly for clamping and fixing the gas sensor element (4) is provided on the top plate (2). The press-fitting assembly includes a pressing plate (5) provided on the top plate (2) for pressing the gas sensor element (4). A plurality of spring probes (6) for cooperating with the pressing plate (5) to perform pressing are provided on the pressing plate (5). A limiting assembly for stabilizing the gas sensor element (4) is also provided on the fixture base (1).

2. The batch air aging and pairing device for gas sensitive elements according to claim 1, characterized in that, A placement table (7) is formed on the fixture base (1), and the circuit board (3) is located on the placement table (7). A positioning post (8) for limiting the circuit board (3) is fixedly installed on the placement table (7), and the positioning post (8) movably penetrates the circuit board (3).

3. The batch air aging and pairing device for gas sensitive elements according to claim 1, characterized in that, The limiting assembly includes a limiting block (9) provided on the fixture base (1), and a through hole (10) for a bolt to penetrate is formed in the limiting block (9).

4. A batch air aging and pairing device for gas sensor elements according to claim 3, characterized in that, A bolt hole (11) for fixing the limiting block (9) is provided on the fixture base (1), and the radius of the bolt hole (11) is smaller than the radius of the through hole (10).

5. A batch air aging and pairing device for gas sensitive elements according to claim 1, characterized in that A positioning pin (12) for positioning the top plate (2) is provided on the fixture base (1), and a pin hole (13) for the positioning pin (12) to penetrate is formed in the top plate (2).

6. The batch air aging and pairing device for gas sensitive elements according to claim 1, characterized in that, A receiving groove (14) for placing the pressing plate (5) is formed on the top plate (2). The pressing plate (5) is located in the receiving groove (14), and the pressing plate (5) is connected to the top plate (2) by bolts.

7. The batch air aging and pairing device for gas sensitive elements according to claim 1, characterized in that, A soft gasket (15) is provided between the top plate (2) and the pressing plate (5), and a groove (16) for placing the soft gasket (15) is formed on the top plate (2).

8. The batch air aging and pairing device for gas sensor elements according to claim 1, characterized in that, A plurality of heat dissipation holes (17) are formed on the top plate (2), and heat insulation foot pads (18) are provided at the bottom end of the fixture base (1).

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