Detection tool for electrical connection of oxygen concentration tube

Abstract

The utility model belongs to the technical field of electrical performance testing of oxygen concentration tubes, and particularly relates to a detection tool for electrical connection of oxygen concentration tubes. A placement groove and conductive clamping grooves are formed in the base, the conductive clamping grooves are distributed in the two sides of the placement groove in pairs, and conductive pieces are installed in the conductive clamping grooves; a placing groove for placing an oxygen concentration tube to be detected is formed in the placing frame; the detection circuit is connected with the conductive part and is used for detecting whether the ultrasonic assembly in the to-be-detected oxygen concentration tube can work normally or not; one end of the moving mechanism is fixedly mounted on the base, the other end of the moving mechanism is connected with the placement frame, and the moving mechanism moves the placement frame towards the placement groove so as to complete electrical connection between the guide pins at the two ends of the to-be-detected oxygen concentration tube and the conductive parts. By the adoption of the detection tool, only the oxygen concentration tube to be detected needs to be placed in or taken out of the containing groove, others can be automatically completed by means of machines, operation space limitation is relieved, the wiring process is omitted, time and labor are saved during piece placing and piece taking before and after detection, and detection operation is facilitated.

Description

Technical Field

[0001] This utility model belongs to the field of oxygen concentration tube detection technology, specifically relating to a testing fixture for the electrical connection of oxygen concentration tubes. Background Technology

[0002] The main component in an oxygen concentrator for detecting oxygen concentration is the oxygen concentration tube, which is installed on the oxygen delivery pipeline. Ultrasonic sensor connectors are installed at both ends of the tube, and ultrasonic signals are alternately transmitted and received to measure propagation time, which is then used for oxygen concentration calculation. In other words, the proper functioning of the oxygen concentration tube depends on the normal operation of the ultrasonic sensor assembly; that is, the signal emitted by one ultrasonic sensor can be received by the other ultrasonic sensor to achieve oxygen concentration detection and transmission. Therefore, to ensure the product quality of the oxygen concentrator, the normal operation of the ultrasonic sensor assembly is tested during the manufacturing process.

[0003] The existing oxygen concentration tube structure features ultrasonic sensor connectors at both ends, an inlet, and an outlet. It typically includes a mounting plate with positioning bolt holes for easy positioning and installation. During testing, the ultrasonic sensor connectors at both ends need to be wired to the testing device, requiring four separate wiring operations, which is time-consuming, as is removing the tube. Furthermore, the inconvenient clamping of the oxygen concentration tube and limited operating space further complicate the wiring process. Therefore, to improve the ease of testing the oxygen concentration tube itself, a suitable adaptive testing fixture needs to be designed. Utility Model Content

[0004] To address the problems existing in the prior art, this utility model provides a testing fixture for the electrical connection of oxygen concentration tubes.

[0005] The technical solution adopted by this utility model to solve its technical problem is as follows: a testing fixture for electrical connection of oxygen concentration tubes, comprising: a base, on which a placement groove and a conductive slot are provided, the conductive slots being distributed in pairs on both sides of the placement groove, and conductive components being installed in the conductive slots; a placement frame, on which a placement groove for placing the oxygen concentration tube to be tested is opened; a testing circuit, connected to the conductive component, for detecting whether the ultrasonic component in the oxygen concentration tube to be tested can work normally; and a moving mechanism, one end of which is fixedly installed on the base, and the other end of which is connected to the placement frame, the moving mechanism moving the placement frame toward the placement groove to complete the electrical connection between the guide pins at both ends of the oxygen concentration tube to be tested and the conductive component.

[0006] Furthermore, it also includes: an optical axis, which passes through the mounting frame and is fixed on the base, and the axis of the optical axis is parallel to the moving direction of the moving mechanism.

[0007] Furthermore, the moving mechanism is a vertical lifting mechanism.

[0008] Furthermore, the height of the conductive surface of the conductive element is not lower than the height of the lowest point of the guide needles at both ends of the oxygen concentration tube to be tested.

[0009] Furthermore, the conductive component includes a conductive needle, a spring, and a needle holder, wherein the spring is located between the conductive needle and the needle holder, and the needle holder is vertically mounted within the base.

[0010] Furthermore, a guide end seat is provided between the mounting groove and the conductive card slot, and a guide groove is formed on the guide end seat. The inner contour line of the guide groove is consistent with the outer contour of the corresponding part of the oxygen concentration tube to be tested.

[0011] Furthermore, the placement slot is horizontally open.

[0012] Furthermore, a positioning groove is provided in the placement groove, which is used to accommodate the positioning bolt hole mounting plate on the oxygen concentration tube to be tested.

[0013] Furthermore, the moving mechanism is a push-pull electromagnet.

[0014] Furthermore, the opening of the conductive card slot is designed with an arc shape.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] 1. A testing fixture for electrical connection of oxygen concentration tubes is provided. The mounting frame is moved to the mounting slot by a moving mechanism to complete the electrical connection between the guide pins at both ends of the oxygen concentration tube to be tested and the conductive parts, eliminating the wiring process and facilitating rapid testing.

[0017] 2. Set an optical axis to ensure the smooth movement of the mounting frame towards the mounting groove;

[0018] 3. The installation height requirements of the conductive components and the use of springs for vertical arrangement ensure good electrical connection during the testing process and improve the reliability of the testing;

[0019] 4. A push-pull electromagnet is used, which can quickly complete the extension and retraction action when the power is turned on and off, corresponding to the installation and removal of one of the oxygen concentration tubes to be tested, which is highly efficient;

[0020] In summary, by using the testing fixture described in this application, it is only necessary to place or remove the oxygen concentration tube to be tested in the placement slot, and everything else can be completed automatically by means of machinery. This eliminates the limitation of operating space, saves the wiring process, and saves time and effort in placing and removing parts before and after testing, making the testing operation easier. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the oxygen concentration tube.

[0022] Figure 2 This is a schematic diagram of the testing fixture in this utility model;

[0023] Figure 3 This is a top view of the testing fixture in this utility model;

[0024] Figure 4 for Figure 3 Sectional view at point AA;

[0025] Figure 5 for Figure 4 Enlarged schematic diagram of the conductive component;

[0026] In the diagram: 1. Base, 2. Mounting frame, 3. Vertical lifting mechanism, 4. Oxygen concentration tube to be tested, 5. Conductive component, 6. Optical axis, 7. Display screen, 101. Mounting slot, 102. Guide end seat, 103. Conductive slot, 104. Vertical plate, 105. Mounting slot, 201. Placement slot, 202. Positioning slot, 301. Push-pull rod, 302. Base, 303. Mounting plate, 401. Air inlet, 402. Air outlet, 403. Ultrasonic A end, 404. Ultrasonic B end, 405. Positioning bolt hole mounting plate, 406. Guide needle, 501. Needle holder, 502. Spring, 503. Conductive needle. Detailed Implementation

[0027] To facilitate understanding of this utility model, it will be described in more detail below with reference to the accompanying drawings and specific embodiments. However, this utility model can be implemented in many different forms and is not limited to the embodiments described in this specification. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model.

[0028] The structure and function of the detection fixture are explained by referring to the structure of the oxygen concentration tube. Chinese Patent No. CN214539381U discloses an ultrasonic oxygen concentration measuring component. The structure of the oxygen concentration tube is understood by referring to this patent. The oxygen concentration tube has an inlet 401 and an outlet 402, and ultrasonic A-end 403 and ultrasonic B-end 404 at each end. A pair of guide needles 406 are respectively provided on the ultrasonic A-end 403 and ultrasonic B-end 404. The oxygen concentration tube also has a positioning pin hole mounting plate 405. Figure 1 understand.

[0029] The structure of the oxygen concentration tube provided in this application is for the purpose of illustrating the function of the testing fixture and does not constitute a limitation on the structure and specific application of the testing fixture.

[0030] Example 1: Combination Figure 1-4The testing fixture for the electrical connection of the oxygen concentration tube has a base 1 with a mounting groove 101 and a conductive slot 103. The conductive slots 103 are distributed in pairs on both sides of the mounting groove 101, and conductive components 5 are installed in the conductive slots 103. The conductive components 5 are connected to a detection circuit, which is used to detect whether the ultrasonic component in the oxygen concentration tube 4 under test can work normally. The mounting frame 2 has a mounting groove 201 for placing the oxygen concentration tube 4 under test. The moving mechanism is fixedly mounted on the base 1 at one end and connected to the mounting frame 2 at the other end. The moving mechanism moves the mounting frame 2 toward the mounting groove 101 to complete the electrical connection between the guide pins 406 at both ends of the oxygen concentration tube 4 under test and the conductive components 5.

[0031] The process of installing the oxygen concentration tube 4 to be tested before testing is as follows: First, place the oxygen concentration tube 4 to be tested in the placement slot 201. Start the moving mechanism, which moves the mounting frame 2 towards the placement slot 101. When the movement is complete, the guide pins 406 at both ends of the oxygen concentration tube 4 to be tested are electrically connected to the conductive component 5, that is, the oxygen concentration tube 4 to be tested is connected to the detection circuit, so that the signal emitted by the ultrasonic A end 403 or the ultrasonic B end 404 can be detected to be received by the other end. After the test is completed, the moving mechanism drives the mounting frame 2 and the oxygen concentration tube 4 to be tested on it to retract to the initial position, so that the oxygen concentration tube 4 to be tested can be removed. Using the testing fixture in this application, it is only necessary to put or take out the oxygen concentration tube 4 to be tested in the placement slot 201, and everything else can be completed automatically by means of machinery. This removes the limitation of operating space, eliminates the wiring process, and saves time and effort in placing and taking out the components before and after testing, making it convenient for rapid testing.

[0032] Example 2: Based on the structure of Example 1, combined with... Figure 2 and Figure 4 It is understood that the placement groove 201 is horizontally open, and a positioning groove 202 is formed inside the placement groove 201. The positioning groove 202 is used to accommodate the positioning bolt hole mounting plate 405 on the oxygen concentration tube 4 to be tested. This facilitates the direct horizontal placement of the oxygen concentration tube 4 to be tested and its accurate positioning and fixation.

[0033] The moving mechanism is a vertical lifting mechanism 3, which can be a push-pull electromagnet. Specifically, the push-pull electromagnet includes a base 302 and a push-pull rod 301. One end of the push-pull rod 301 is mounted on the base 302, and the other end is fixedly mounted on the mounting frame 101. The base 302 is fixedly mounted on a vertical plate 104 above the base 1 via a mounting plate 303. The vertical plate 104 has a mounting groove 105. The mounting groove 105 is arranged vertically, which allows adjustment of the installation height of the base 302 to ensure that after the action, the guide pins 406 at both ends of the oxygen concentration tube 4 to be tested form a contact and conduction with the conductive component. By using a push-pull electromagnet, a set of extension and retraction actions is completed in a single on-off cycle, corresponding to the installation of one oxygen concentration tube 4 to be tested. The extension and retraction actions are completed quickly during power-on and power-off cycles, resulting in high efficiency.

[0034] Combination Figure 5 It is understood that the conductive component 5 includes: a conductive needle 503, a spring 502, and a needle holder 501. The spring 502 is located between the conductive needle 503 and the needle holder 501, and the needle holder 501 is vertically installed inside the base 1. In its natural state, the upper end face of the conductive needle 503 is not lower than the height of the lowest point of the guide needles 406 at both ends of the oxygen concentration tube 4 to be tested. When the oxygen concentration tube 4 to be tested is installed in place, the spring 502 is slightly compressed, and the spring 502 generates an upward restoring force, causing the conductive needle 503 and the guide needles 406 to fit tightly in contact, forming a good electrical connection and improving the reliability of the detection.

[0035] In one embodiment, an optical axis 6 is further provided, which passes through the mounting frame 2 and is fixed to the base 1. The axis of the optical axis 6 is parallel to the moving direction of the moving mechanism. The use of the optical axis 6 ensures the smooth movement of the mounting frame 2 towards the mounting groove 101.

[0036] In one embodiment, a guide end seat 102 is provided between the placement groove 101 and the conductive slot 103. The guide end seat 102 has a guide groove, the inner contour of which is consistent with the outer contour of the corresponding part of the oxygen concentration tube 4 to be tested. If there is a small deviation when the oxygen concentration tube 4 is initially placed, or if the oxygen concentration tube 4 deviates slightly during the operation of the moving mechanism, the guide groove corrects the deviation and guides the oxygen concentration tube 4 to be tested to a straight position, thus ensuring that the guide needle 406 can smoothly enter the conductive slot 103 later.

[0037] In one embodiment, the opening of the conductive slot 103 is designed with an arc to form a guiding opening, which facilitates the entry of the guide pin 406.

[0038] In the specific design, the lifting start switch can be externally mounted, and a display screen 7 can be installed on the platform of the base 1 to display information such as test results, which makes it easier to operate and use.

[0039] It should be noted that the detection circuit is essential for the testing fixture and is used during testing; however, it is not the core focus of this application, so it will not be discussed in detail. The layout and position can be suitable, such as placing it within the base 1.

[0040] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

Claims

1. A testing fixture for the electrical connection of an oxygen concentration tube, characterized in that, include: The base has a mounting groove and a conductive slot, the conductive slots are distributed in pairs on both sides of the mounting groove, and conductive components are installed in the conductive slots; The mounting frame has slots for placing tubes containing oxygen concentration to be tested. A detection circuit, connected to the conductive component, is used to detect whether the ultrasonic component in the oxygen concentration tube under test is working properly. The moving mechanism is fixedly mounted on the base at one end and connected to the mounting frame at the other end. The moving mechanism moves the mounting frame toward the mounting slot to complete the electrical connection between the guide needles at both ends of the oxygen concentration tube to be tested and the conductive component.

2. The testing fixture for the electrical connection of an oxygen concentration tube according to claim 1, characterized in that, Also includes: An optical axis passes through the mounting frame and is fixed to the base, and the axis of the optical axis is parallel to the moving direction of the moving mechanism.

3. The testing fixture for the electrical connection of an oxygen concentration tube according to claim 2, characterized in that, The moving mechanism is a vertical lifting mechanism.

4. The testing fixture for the electrical connection of an oxygen concentration tube according to claim 3, characterized in that, The height of the conductive surface of the conductive component is not lower than the height of the lowest point of the guide needles at both ends of the oxygen concentration tube to be tested.

5. The testing fixture for the electrical connection of an oxygen concentration tube according to claim 4, characterized in that, The conductive component includes a conductive needle, a spring, and a needle holder, wherein the spring is located between the conductive needle and the needle holder, and the needle holder is vertically mounted within the base.

6. The testing fixture for the electrical connection of an oxygen concentration tube according to claim 1, characterized in that, A guide end seat is provided between the mounting groove and the conductive card slot. A guide groove is opened on the guide end seat, and the inner contour line of the guide groove is consistent with the outer contour of the corresponding part of the oxygen concentration tube to be tested.

7. The testing fixture for the electrical connection of an oxygen concentration tube according to claim 1, characterized in that, The placement slot is horizontally open.

8. The testing fixture for the electrical connection of an oxygen concentration tube according to claim 1, characterized in that, The placement groove has a positioning groove, which is used to accommodate the positioning bolt hole mounting plate on the oxygen concentration tube to be tested.

9. The testing fixture for the electrical connection of an oxygen concentration tube according to claim 1, characterized in that, The moving mechanism is a push-pull electromagnet.

10. The testing fixture for the electrical connection of an oxygen concentration tube according to claim 1, characterized in that, The opening of the conductive card slot is designed with an arc.

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