A product pressurization test fixture

Abstract

The utility model discloses a product pressurization test frock, including pressurization frock, the upper portion of pressurization frock is provided with a plurality of groups of pressurization groove of installing product, the inside installation of each group pressurization groove has hollow locking nut, the upper portion of pressurization frock is installed with circuit board, the lower portion of circuit board is installed with a plurality of groups of fixed block of inserting in locking nut inside, the middle part of each group fixed block is provided with a plurality of groups and circuit board welding's thumbtack, the bottom of each group thumbtack contacts the surface of corresponding product, the upper portion of circuit board is installed with the socket of butt joint with external test equipment. Through integrated circuit board welding fixed multiple thumbtacks, fixed block inserts locking nut and realizes electrical connection with product, and the circuit board sets up the socket of butt joint external test system, thereby realizes the synchronous installation test of multiple products, and the repeated cumbersome needle wiring of traditional frock is saved, and the test failure caused by poor contact or connection deviation is avoided.

Description

Technical Field

[0001] This utility model relates to the field of pressure testing technology, specifically a product pressure testing fixture. Background Technology

[0002] In the manufacturing process of industrial products such as electronic components, hydraulic parts, and sealing devices, pressure testing is a crucial step in ensuring the product's pressure resistance and sealing reliability. Specialized tooling is used to apply rated pressure to the product, and combined with pressure holding and leak detection methods, defective products are screened out.

[0003] Existing pressure testing fixtures are inefficient when simultaneously pressurizing multiple product groups. Due to the large number of products, each product's calibration test requires separate installation and operation, making batch synchronous processing impossible. The connection between the test probe and the test calibration system is completed through test springs, which involves numerous steps. This not only makes the overall process cumbersome but also prone to errors due to repetitive operations or connection deviations. Therefore, a new product pressure testing fixture is needed. Utility Model Content

[0004] The purpose of this utility model is to provide a product pressure testing fixture, which solves the technical problems of existing pressure testing fixtures being unable to process products in batches simultaneously and having cumbersome testing connection steps through an integrated circuit board, pins soldered to the circuit board, and a unified socket.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A product pressure testing fixture includes a pressure fixture, wherein the upper part of the pressure fixture is provided with several sets of pressure grooves for installing products, and a hollow locking nut is installed inside each set of pressure grooves.

[0007] The upper part of the pressure fixture is equipped with a circuit board, and the lower part of the circuit board is equipped with several sets of fixing blocks that are inserted into the locking nut. Each set of fixing blocks has several sets of pins that are soldered to the circuit board in the middle. The bottom of each set of pins contacts the surface of the corresponding product. The upper part of the circuit board is equipped with a socket for interfacing with external testing equipment.

[0008] Preferably, the fixing block of each group is clearance-fitted with the inner wall of the corresponding locking nut, and the outer side of each group of pins is covered with an insulating sleeve for insulation.

[0009] Preferably, the upper part of the pressurizing fixture is symmetrically threaded with several sets of studs on both sides of the pressurizing groove, and the middle part of the circuit board is provided with several sets of through holes corresponding to the studs. The circuit board is fitted into the middle part of the several sets of studs through the through holes.

[0010] Preferably, a pressure plate is mounted on the upper part of the circuit board, and the pressure plate has several sets of circular holes in the middle. The pressure plate is fitted into the middle of several sets of studs through the circular holes.

[0011] Preferably, a fixing nut is threaded onto the top of each set of studs, and the circuit board and pressure plate are sandwiched between the studs and the fixing nut.

[0012] Preferably, the side wall of the pressurizing fixture is equipped with a pressurizing port that connects to an external pressurizing device, and the interior of the pressurizing fixture has several sets of pressurizing channels that communicate with the pressurizing port.

[0013] Preferably, several sets of pressure grooves are connected to several sets of pressure channels, and an O-ring for sealing is fitted between the bottom of each product and the pressure groove.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] The integrated circuit board structure uses welding to fix multiple sets of pins to the circuit board, and the fixing blocks inserted into the locking nuts are used to achieve electrical connection with the products. At the same time, a unified socket is set on the circuit board to interface with the external testing system. This enables the simultaneous installation and testing of multiple products, greatly improving testing efficiency. It also completely eliminates the repetitive and cumbersome spring pin wiring steps in traditional tooling, effectively avoiding test errors caused by poor contact or connection deviation. The overall structure is compact and easy to operate. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram showing the overall structure of this utility model disassembled;

[0018] Figure 3 This is a schematic diagram of the pin mounting structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the internal structure of the pressure tank of this utility model.

[0020] In the diagram: 1. Pressure fixture; 2. Pressure groove; 3. Locking nut; 4. Circuit board; 5. Fixing block; 6. Pin; 7. Socket; 8. Stud; 9. Through hole; 10. Pressure plate; 11. Circular hole; 12. Fixing nut; 13. Pressure port; 14. Pressure channel; 15. O-ring. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] This utility model provides: a product pressure testing fixture, such as... Figures 1-4 As shown, the device includes a pressure-pressurizing fixture 1. The upper part of the pressure-pressurizing fixture 1 has several sets of pressure-pressurizing slots 2 for mounting products. Each set of pressure-pressurizing slots 2 contains a hollow locking nut 3. The pressure-pressurizing fixture 1 is the main frame of the entire product pressure testing fixture, providing a stable mounting base and working space for all other components. The pressure-pressurizing slots 2 on the upper part of the pressure-pressurizing fixture 1 provide dedicated mounting positions for the products. The hollow locking nuts 3 installed inside each set of pressure-pressurizing slots 2 serve two purposes: firstly, their hollow structure does not obstruct the insertion of subsequent electrical connection components; secondly, they provide auxiliary positioning and initial fixation for the products placed within the pressure-pressurizing slots 2, preventing lateral displacement of the products during testing.

[0023] A circuit board 4 is mounted on the upper part of the pressure fixture 1. Several sets of fixing blocks 5, inserted into the locking nuts 3, are mounted on the lower part of the circuit board 4. Each fixing block 5 has several sets of pins 6 soldered to the circuit board 4 in its center. The bottom of each set of pins 6 contacts the surface of the corresponding product. A socket 7 for interfacing with external testing equipment is mounted on the upper part of the circuit board 4. The circuit board 4 is the electrical integration carrier of the entire testing fixture, undertaking the dual functions of fixing electrical components and transmitting test signals. Its integrated structure enables the orderly arrangement of multiple test elements. The fixing blocks 5 mounted on the lower part of the circuit board 4 cooperate with the locking nuts 3 in the pressure groove 2. When the fixing blocks 5 are inserted into the locking nuts 3, they achieve precise positioning of the circuit board 4 on the pressure fixture 1 and provide guidance for the pins 6 to align with the product. The pins 6 are connected to the circuit board 4 by soldering, ensuring a stable connection and avoiding the loosening problems of traditional spring-loaded wiring. The bottom of the pins 6 contacts the surface of the corresponding product and is responsible for transmitting test signals. Socket 7 is used to interface with external testing equipment, transmitting product test signals received by circuit board 4 to the external testing equipment, and simultaneously receiving control signals from the external equipment. Circuit board 4 achieves precise positioning through the cooperation of the fixing block and locking nut 3. The pin 6 soldered to circuit board 4 contacts the product surface to establish an electrical connection. The external testing equipment interfaces with circuit board 4 through socket 7, forming a complete test signal path to achieve electrical performance testing of the product. At the same time, the integrated structure eliminates the traditional spring-loaded pin wiring steps, avoiding test errors caused by poor contact.

[0024] Preferably, each set of fixing blocks 5 has a clearance fit with the inner wall of the corresponding locking nut 3, and each set of pins 6 is covered with an insulating sleeve for insulation. The clearance fit design facilitates the smooth insertion of the fixing blocks 5 into the locking nut 3, enabling quick installation and removal of the circuit board 4, while also ensuring a certain positioning accuracy of the fixing blocks 5 within the locking nut 3, preventing excessive shaking of the fixing blocks 5 that could cause the pins 6 to deviate from contact with the product. The insulating sleeves covering the outside of each set of pins 6 provide electrical insulation, preventing short circuits between adjacent pins 6 due to close proximity, and also preventing leakage between the pins 6 and other metal components such as the pressure fixture 1, ensuring the purity of the test signal.

[0025] Furthermore, the upper part of the pressure fixture 1 is symmetrically threaded with several sets of studs 8 on both sides of the pressure groove 2. The middle part of the circuit board 4 has several sets of through holes 9 corresponding to the studs 8. The circuit board 4 is fitted into the middle of the studs 8 through the through holes 9. The sets of studs 8 on the upper part of the pressure fixture 1 support and fix the circuit board 4. The symmetrical distribution design provides uniform support for the circuit board 4, ensuring its flatness after installation. The sets of through holes 9 in the middle of the circuit board 4 provide a channel for the circuit board 4 to be fitted onto the studs 8, allowing the fixing block 5 at the bottom of the circuit board 4 to be smoothly aligned with the locking nut 3 in the pressure groove 2. The studs 8 are symmetrically installed on the pressure fixture 1 and provide support. The circuit board 4 is fitted onto the studs 8 through the through holes 9. With the cooperation of the studs 8 and the through holes 9, the circuit board 4 is initially fixed above the pressure fixture 1, ensuring accurate relative positioning of the circuit board 4 with the pressure groove 2 and the locking nut 3, making the overall structure more compact.

[0026] Furthermore, a pressure plate 10 is mounted on the upper part of the circuit board 4. The pressure plate 10 has several sets of circular holes 11 in its center, through which it is fitted onto the center of several sets of studs 8. The pressure plate 10 applies downward pressure to the circuit board 4, further compacting it and preventing it from shifting upwards during testing due to vibration or other factors, ensuring reliable contact between the pin 6 and the product. The circular holes 11 in the center of the pressure plate 10 precisely correspond to the studs 8, providing a channel for the pressure plate 10 to be fitted onto the studs 8, ensuring that the pressure plate 10 accurately covers the circuit board 4 and applies pressure evenly. The pressure plate 10, through the circular holes 11 and the studs 8, is installed above the circuit board 4. Utilizing the weight of the pressure plate 10 itself and the locking force of the subsequent fixing nuts 12, it applies uniform pressure to the circuit board 4, firmly fixing it to the studs 8, preventing loosening, ensuring the stability of the contact between the pin 6 and the product, and reducing testing errors caused by poor contact.

[0027] It is worth noting that each set of studs 8 has a fixing nut 12 threaded onto its top. The circuit board 4 and the pressure plate 10 are both clamped between the studs 8 and the fixing nuts 12. Each set of fixing nuts 12, through thread engagement with the studs 8, generates a downward locking force, firmly clamping the circuit board 4 and the pressure plate 10, which are sleeved on the studs 8, between the studs 8 and the fixing nuts 12. After the pressure plate 10 is sleeved onto the studs 8 and adheres to the circuit board 4, the operator screws the fixing nuts 12 onto the top of the studs 8. As the fixing nuts 12 are tightened, their lower surface will come into close contact with the upper surface of the pressure plate 10, generating a downward locking force. This locking force is transmitted to the circuit board 4 through the pressure plate 10, causing the circuit board 4 to adhere tightly to the pressure fixture 1. At the same time, the fixing block 5 is also further pressed into the locking nut 3, ensuring a stable contact between the pin 6 and the product surface.

[0028] Specifically, the pressure-pressurizing fixture 1 has a pressure port 13 installed on its side wall for connection with external pressure-pressurizing equipment. The interior of the pressure-pressurizing fixture 1 has several sets of pressure-pressurizing channels 14 that communicate with the pressure ports 13. The pressure ports 13 serve as the connection interface between the external pressure-pressurizing equipment and the interior of the pressure-pressurizing fixture 1, providing a channel for the pressurizing medium to enter the pressure-pressurizing fixture 1, and are the pressure input port for product pressure testing. The pressure-pressurizing channels 14 inside the pressure-pressurizing fixture 1 are used to evenly deliver the pressurizing medium input from the pressure ports 13 to each set of pressure tanks 2, ensuring that the products in each set of pressure tanks 2 receive the same pressure conditions. Before testing, connect the output end of the external pressurizing device to the pressurizing port 13 of the pressurizing fixture 1 to ensure the interface is sealed. During testing, the external pressurizing device is started, and the pressurizing medium is input into the pressurizing fixture 1 through the pressurizing port 13. The incoming pressurizing medium flows through several sets of pressurizing channels 14. Since the pressurizing channels 14 are connected to each set of pressurizing tanks 2 and the channels are designed with equal diameter and symmetrical structure, the pressurizing medium will be evenly distributed to each pressurizing tank 2, so that each set of products is in the same pressure environment, avoiding test deviations caused by uneven pressure.

[0029] More specifically, several sets of pressure tanks 2 are connected to several sets of pressure channels 14, and an O-ring 15 for sealing is fitted between the bottom of each product and the pressure tank 2. The connection between the several sets of pressure tanks 2 and the several sets of pressure channels 14 ensures that the pressure medium conveyed by the pressure channels 14 can directly enter the pressure tank 2, allowing the product in the pressure tank 2 to directly contact the pressure medium and achieve direct pressure on the product. The O-ring 15 fitted between the bottom of each product and the pressure tank 2 ensures a seal between the product and the pressure tank 2, preventing the pressure medium in the pressure tank 2 from leaking through the gap between the product and the tank wall. First, place the O-ring 15 on the bottom of the product, then place the product into the pressure tank 2. At this time, the O-ring 15 will be squeezed between the bottom of the product and the inner wall of the pressure tank 2 to form a sealing surface. When the pressurizing medium enters the pressure tank 2 through the pressurizing channel 14, due to the sealing effect of the O-ring 15, the pressurizing medium cannot leak from the gap between the product and the tank wall. The pressure in the pressure tank 2 will gradually rise to the set value and remain stable, ensuring that the product is always under the set pressure conditions during the test. At the same time, in conjunction with the signal acquisition of the integrated circuit board, the pressurization status of each group of products is synchronized with the electrical performance test, avoiding inaccurate test data due to pressure leakage and improving the reliability of the test results.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A product pressure testing fixture, characterized in that: It includes a pressure fixture (1), the upper part of which is provided with several sets of pressure grooves (2) for installing products, and each set of pressure grooves (2) is provided with a hollow locking nut (3). The upper part of the pressure fixture (1) is equipped with a circuit board (4), and the lower part of the circuit board (4) is equipped with several sets of fixing blocks (5) inserted into the locking nut (3). Each set of fixing blocks (5) is provided with several sets of pins (6) welded to the circuit board (4) in the middle. The bottom of each set of pins (6) contacts the surface of the corresponding product. The upper part of the circuit board (4) is equipped with a socket (7) for interfacing with external testing equipment.

2. The product pressure testing fixture according to claim 1, characterized in that: Each set of fixing blocks (5) and the inner wall of the corresponding locking nut (3) are in clearance fit, and each set of pins (6) is covered with an insulating sleeve for insulation.

3. The product pressure testing fixture according to claim 1, characterized in that: The upper part of the pressure fixture (1) is symmetrically threaded to both sides of the pressure groove (2) with several sets of studs (8). The middle part of the circuit board (4) is provided with several sets of through holes (9) corresponding to the studs (8). The circuit board (4) is fitted into the middle part of several sets of studs (8) through the through holes (9).

4. The product pressure testing fixture according to claim 3, characterized in that: A pressure plate (10) is installed on the upper part of the circuit board (4). Several sets of circular holes (11) are opened in the middle of the pressure plate (10). The pressure plate (10) is fitted into the middle of several sets of studs (8) through the circular holes (11).

5. The product pressure testing fixture according to claim 4, characterized in that: Each set of studs (8) has a fixing nut (12) threaded on its top, and the circuit board (4) and the pressure plate (10) are sandwiched between the studs (8) and the fixing nut (12).

6. The product pressure testing fixture according to claim 1, characterized in that: The side wall of the pressurizing fixture (1) is equipped with a pressurizing port (13) that is connected to an external pressurizing device. The interior of the pressurizing fixture (1) is provided with several sets of pressurizing channels (14) that communicate with the pressurizing port (13).

7. The product pressure testing fixture according to claim 6, characterized in that: Several sets of pressure grooves (2) are connected to several sets of pressure channels (14), and an O-ring (15) for sealing is fitted between the bottom of each product and the pressure groove (2).

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