A test strip detection connector

Abstract

The utility model relates to connector technical field, concretely is related to a test strip detection connector, including plastic main part, plastic push seat and terminal set, the front end of plastic main part is equipped with the spigot, plastic main part is equipped with two interval and side -by -side arrangement push groove, push groove is linked together with the spigot, terminal set includes a plurality of extension to the front contact terminal of push groove front end and a plurality of extension to the rear contact terminal of push groove rear end, a plurality of front contact terminals and a plurality of rear contact terminals are arranged in push groove one by one, plastic push seat convex has two interval and side -by -side arrangement and protrudes into the push arm of push groove, the both sides groove wall of each push groove is convex and is located between the guide boss of opposite front contact terminal and rear contact terminal, the guide boss located in the both sides of push groove provides the guidance when push arm sliding, to make push arm smooth sliding into between adjacent two front contact terminals or between adjacent two rear contact terminals, to effectively avoid the interference touch of push arm and front contact terminal, rear contact terminal.

Description

Technical Field

[0001] This utility model relates to the field of connector technology, specifically to a test strip testing connector. Background Technology

[0002] As a key component in the medical testing field, test strip connectors are widely used in point-of-care testing (POCT) devices for blood glucose, blood lipids, uric acid, etc. Their core function is to achieve a precise electrical connection between the test strip and the device's mainboard, transmit the biochemical reaction signals on the test strip through the terminal group, and finally convert them into readable test data, which is directly related to the accuracy and reliability of the test results.

[0003] Existing blood glucose testing connectors are generally designed with a push-strip paper ejection mechanism to meet the need for quick removal of the test strip after testing. This means that the strip is manually pushed out of the connector's ejector slot after testing. However, in practical applications, it has been found that the push-strip can sometimes touch the terminal contact pins, reducing the reliability of the terminal contact pins and thus affecting the test results. Summary of the Invention

[0004] The purpose of this invention is to overcome the above-mentioned shortcomings and provide a test strip testing connector.

[0005] To achieve the above objectives, the specific solution of this utility model is as follows:

[0006] A test strip testing connector includes a plastic body, a plastic push base slidably disposed on one side of the plastic body, and a terminal group disposed within the plastic body; the front end of the plastic body has a socket for inserting a test strip; the plastic body has two spaced-apart push grooves extending along its length and arranged side by side; the push grooves communicate with the socket; the terminal group includes multiple front contact terminals extending into the front end of the push grooves and multiple rear contact terminals extending into the rear end of the push grooves; the multiple front contact terminals and the multiple rear contact terminals are arranged opposite to each other within the push grooves; the plastic push base has two spaced-apart push arms protruding from it; the push arms protrude into the push grooves;

[0007] Each of the push grooves has guide bosses protruding from both sides of the groove wall, located between the opposite front contact terminal and the rear contact terminal; the guide bosses on both sides of the push groove provide guidance when the push arm slides, so that the push arm can smoothly slide into the space between two adjacent front contact terminals or between two adjacent rear contact terminals.

[0008] Furthermore, the plastic body includes two identical plastic bases; the two plastic bases are fixedly connected together vertically; a row of terminal groups is embedded in the upper plastic base; another row of terminal groups is embedded in the lower plastic base; the plastic base is provided with two parallel sub-grooves extending along its length; the sub-grooves of the upper and lower plastic bases together form the push groove.

[0009] Furthermore, the distance between two adjacent front contact terminals and the distance between two adjacent rear contact terminals located in the sub-slide groove are 1.55-1.65 mm.

[0010] Furthermore, the plastic push base is provided with a handle in the middle.

[0011] Furthermore, the handle of this invention has a cylindrical structure.

[0012] Furthermore, the present invention provides a positioning post at one diagonal position of the plastic base and a positioning hole at the other diagonal position for engaging with the positioning post; the outer wall of the positioning post is provided with a circumferentially arranged protrusion; the protrusion is interference-fitted with the positioning hole.

[0013] Furthermore, the present invention provides slide rails on both sides of the plastic base; and provides L-shaped sliding arms at both ends of the plastic push base; the sliding arms are slidably connected to the slide rails.

[0014] Furthermore, the slide rail is provided with an inclined surface; the angle between the inclined surface and the vertical surface of the slide arm is 37-43 degrees.

[0015] Furthermore, the gap between the horizontal bottom surface of the slide rail and the horizontal surface of the slide arm is 0.05-0.1mm.

[0016] Furthermore, each of the aforementioned front contact terminals and each of the aforementioned rear contact terminals is provided with a welding foot; the end of the welding foot is provided with an inclined portion; the angle between the inclined portion and the horizontal plane is 20-26 degrees.

[0017] The beneficial effects of this utility model are as follows: This utility model provides guide bosses on both sides of the groove wall between the front and rear contact terminals. These guide bosses can provide trajectory constraints for the sliding of the push arm, so that the push arm can always slide smoothly into the adjacent terminals along the preset path, thereby effectively avoiding interference and contact between the push arm and the front and rear contact terminals, and avoiding deformation or poor contact of the terminal contact pins due to collision, thereby ensuring a stable electrical connection between the terminal and the test strip, and thus ensuring the accuracy of the detection signal transmission, solving the problem of deviation in detection results caused by terminal contact in existing products. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the test strip testing connector of this utility model;

[0019] Figure 2 This is a structural schematic diagram of the test strip testing connector of this utility model from another perspective;

[0020] Figure 3 This is an exploded view of the test strip testing connector of this utility model;

[0021] Figure 4 This is a cross-sectional view of the test strip testing connector of this utility model;

[0022] Figure 5 This is a schematic diagram of the structure of the plastic base of this utility model;

[0023] Figure 6 This is a schematic diagram illustrating the application of the test strip testing connector of this utility model;

[0024] Figure 7 This is a side view of the test strip testing connector of this utility model when it is used.

[0025] Explanation of reference numerals in the attached drawings: 1. Plastic body; 11. Plastic base; 12. Insert; 13. Push groove; 14. Guide boss; 15. Sub-slide groove; 16. Positioning post; 17. Positioning hole; 18. Raised strip; 19. Slide rail; 191. Inclined surface; 2. Plastic push base; 21. Push arm; 22. Handle; 23. Slide arm; 3. Terminal group; 31. Front contact terminal; 32. Rear contact terminal; 33. Welding foot; 331. Inclined part. Detailed Implementation

[0026] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments, but this is not to limit the scope of the present invention.

[0027] like Figures 1 to 7As shown in this embodiment, a test strip testing connector is provided to solve the problem of easy contact between the pusher and the terminal in existing testing connectors, which affects the reliability of testing. The test strip testing connector specifically includes a plastic body 1, a plastic pusher 2 slidably disposed on one side of the plastic body 1, and a terminal group 3 disposed within the plastic body 1. The front end of the plastic body 1 has a socket 12 for inserting the test strip. The plastic body 1 has two spaced-apart pusher grooves 13 extending along its length direction. The pusher grooves 13 communicate with the socket 12. The terminal group 3 includes multiple front contact terminals 31 extending into the front end of the pusher grooves 13 and multiple rear contact terminals 32 extending into the rear end of the pusher grooves 13, such as two front contact terminals 31 and two rear contact terminals 32 disposed in each pusher groove 13. The multiple front contact terminals 31 and multiple rear contact terminals 32 are arranged in... The push grooves 13 are arranged one-to-one to ensure that the test strip can make stable contact with the terminal after insertion, thus ensuring the accurate transmission of the detection signal. The plastic push base 2 is used to push the test strip out. It is made of plastic material, which is not easily oxidized and corroded compared to metal material. It has two push arms 21 arranged side by side at intervals. The push arms 21 protrude into the push groove 13. Each push groove 13 has guide bosses 14 on both sides of the groove wall, located between the opposite front contact terminal 31 and rear contact terminal 32. The guide bosses 14 on both sides of the push groove 13 provide guidance for the push arms 21 to slide smoothly between two adjacent front contact terminals 31 or two adjacent rear contact terminals 32.

[0028] Specifically, in practical applications, the test strip detection connector of this embodiment inserts the test strip into the plastic body 1 through the socket 12. At this time, the test strip is clamped by the front contact terminal 31 and the rear contact terminal 32, thereby performing blood glucose detection. When it is necessary to remove the test strip from the plastic body 1, the plastic push base 2 is pushed forward towards the socket 12. The plastic push base 2 drives the push arm 21 to slide forward in the push groove 13, thereby pushing the test strip to overcome the clamping force of the terminals and remove it. During the sliding process of the push arm 21, the guides on both sides of the push groove 13... The guide boss 14 guides the push arm 21, allowing it to reliably slide between two adjacent front contact terminals 31, thus effectively preventing interference between the push arm 21 and the front contact terminals 31. Similarly, when the push arm 21 slides backward, the guide bosses 14 on both sides of the push groove 13 guide the push arm 21, allowing it to reliably slide between two adjacent rear contact terminals 32, thus effectively preventing interference between the push arm 21 and the rear contact terminals 32. This improves the reliability of the connector and ensures the reliability of testing.

[0029] like Figures 1 to 5As shown, in some embodiments of the test strip testing connector, the plastic body 1 includes two identical plastic bases 11; the two plastic bases 11 are fixedly connected together vertically; a row of terminal groups 3 is embedded in the upper plastic base 11; another row of terminal groups 3 is embedded in the lower plastic base 11; the plastic base 11 is provided with two parallel sub-slide grooves 15 extending along its length; the sub-slide grooves 15 of the upper and lower plastic bases 11 together form a push groove 13. In this embodiment, by setting two identical plastic bases 11 for vertical fixed connection, it is not necessary to distinguish the direction when assembling the plastic push seat 2, making the plastic push seat 2 more convenient.

[0030] In some embodiments of the test strip testing connector, the spacing D between two adjacent front contact terminals 31 and two adjacent rear contact terminals 32 within the sub-slide groove 15 is 1.55-1.65 mm. This spacing range is the optimal choice after multiple practical verifications. If the spacing is too small, the push arm 21 will easily interfere with the terminals when sliding. If the spacing is too large, it will affect the utilization rate of the space within the push groove 13 and may reduce the contact stability between the terminals and the test strip. The spacing of 1.55-1.65 mm can not only fully accommodate the smooth passage of the push arm 21, but also ensure the density of the terminals to meet the testing requirements, further avoiding interference and contact between the push arm 21 and the front contact terminal 31 or the rear contact terminal 32, and improving the reliability of the overall structure.

[0031] like Figures 1 to 4 As shown, in some embodiments of the test strip testing connector, a handle 22 is provided in the middle of the plastic push base 2. This embodiment uses a handle 22 to facilitate sliding of the plastic push base 2, making operation more convenient. In some embodiments of the test strip testing connector, the handle 22 has a cylindrical structure. The curved surface of the cylinder disperses pressure when in contact with the hand, reducing discomfort during gripping and significantly improving the user experience, especially suitable for scenarios requiring frequent operation.

[0032] like Figures 1 to 3 ,as well as Figure 5As shown, in some embodiments of the test strip testing connector, the plastic base 11 has positioning posts 16 at one diagonal position and positioning holes 17 at the other diagonal position for engaging with the positioning posts 16; the outer wall of the positioning posts 16 is provided with circumferentially arranged protrusions 18; the protrusions 18 and the positioning holes 17 are interference-fitted. In this embodiment, the diagonal arrangement of the positioning posts 16 and the positioning holes 17 can form a precise positioning reference, avoiding misalignment during assembly, ensuring that the sub-slide grooves 15 of the upper and lower bases can be accurately aligned to form the push groove 13. At the same time, the interference fit between the protrusions 18 and the positioning holes 17 ensures that the positioning posts 16 and the positioning holes 17 fit tightly, preventing loosening after assembly, providing a stable foundation for the subsequent hot melt welding process, and ensuring the overall structural stability of the plastic body 1.

[0033] like Figures 1 to 4 As shown, in some embodiments of the test strip detection connector, the plastic base 11 is provided with slide rails 19 on both sides; the plastic push base 2 is provided with L-shaped sliding arms 23 at both ends; the sliding arms 23 are slidably connected to the slide rails 19. Specifically, the slide rails 19 can limit the horizontal displacement of the sliding arms 23, and the vertical section of the L-shaped sliding arms 23 can limit its vertical swaying, so that the plastic push base 2 remains stable during sliding, effectively avoiding collision between the push arm 21 and the push groove 13 wall or terminal due to push base swaying, and ensuring the smoothness of the paper ejection operation.

[0034] like Figure 4 As shown, in some embodiments of the test strip testing connector, the slide rail 19 is provided with an inclined surface 191; the angle α between the inclined surface 191 and the vertical surface of the slide arm 23 is 37-43 degrees; specifically, this angle range is a balance between ease of assembly and connection stability; if the angle is too large, the resistance of the slide arm 23 into the slide rail 19 increases, making assembly inconvenient; if the angle is too small, the contact area between the slide arm 23 and the slide rail 19 decreases, making it easy to loosen; the angle of 37-43 degrees allows the slide arm 23 to slide smoothly into the slide rail 19 along the inclined surface 191 during assembly, while ensuring effective contact between the slide arm 23 and the slide rail 19, avoiding loosening after assembly, and significantly improving assembly efficiency and structural stability.

[0035] like Figure 4 As shown, in some embodiments of the test strip detection connector, the gap d between the horizontal bottom surface of the slide rail 19 and the horizontal surface of the slide arm 23 is 0.05-0.1mm. Specifically, if the gap is too small, the friction force will increase when the slide arm 23 slides, and jamming will easily occur; if the gap is too large, the slide arm 23 will wobble in the slide rail 19, affecting the stability of the push seat sliding. The gap of 0.05-0.1mm can effectively limit the wobble of the slide arm 23 while ensuring smooth sliding, ensuring the sliding accuracy of the plastic push seat 2, and further improving the reliability and user experience of the paper ejection operation.

[0036] like Figure 2 , Figure 3 as well as Figure 7 As shown, in some embodiments of the test strip connector, each front contact terminal 31 and each rear contact terminal 32 is provided with a soldering pin 33; the end of the soldering pin 33 is provided with an inclined portion 331; the angle β between the inclined portion 331 and the horizontal plane is 20-26 degrees. Specifically, the inclined portion 331 can form a certain space with the surface of the PCB board during the soldering process. This space can be used to accommodate the solder generated during soldering (i.e., "soldering"), avoiding short circuits caused by solder overflow from the soldering pins 33 of adjacent terminals; at the same time, the 20-26 degree angle can ensure that sufficient soldering space is formed between the inclined portion 331 and the PCB board, and the contact area between the soldering pin 33 and the PCB board will not be reduced due to an excessively large angle, thus balancing soldering reliability and short circuit prevention, and ensuring stable electrical performance of the product.

[0037] The above description is only a preferred embodiment of the present utility model. Therefore, any equivalent changes or modifications made to the structure, features and principles described in the claims of the present utility model patent application are included within the protection scope of the present utility model patent application.

Claims

1. A test strip testing connector, characterized in that, The device includes a plastic body, a plastic pusher seat slidably disposed on one side of the plastic body, and a terminal group disposed within the plastic body. The front end of the plastic body has an insertion port for inserting test strips. The plastic body has two parallel push grooves extending along its length, spaced apart, connected to the insertion port. The terminal group includes multiple front contact terminals extending into the front end of the push grooves and multiple rear contact terminals extending into the rear end of the push grooves. The multiple front contact terminals and multiple rear contact terminals are arranged opposite each other within the push grooves. The plastic pusher seat has two parallel push arms protruding from it, spaced apart, extending into the push grooves. Each of the push grooves has guide bosses protruding from both sides of the groove wall, located between the opposite front contact terminal and the rear contact terminal; the guide bosses on both sides of the push groove provide guidance when the push arm slides, so that the push arm can smoothly slide into the space between two adjacent front contact terminals or between two adjacent rear contact terminals.

2. The test strip testing connector according to claim 1, characterized in that, The plastic body includes two identical plastic bases; the two plastic bases are fixedly connected together vertically; one row of terminal groups is embedded in the upper plastic base; the other row of terminal groups is embedded in the lower plastic base; the plastic base is provided with two parallel sub-slide grooves extending along its length; the sub-slide grooves of the upper and lower plastic bases together form the push groove.

3. The test strip testing connector according to claim 2, characterized in that, The spacing between two adjacent front contact terminals and the spacing between two adjacent rear contact terminals located within the sub-slide groove are 1.55-1.65 mm.

4. The test strip testing connector according to claim 1, characterized in that, A handle is provided in the middle of the plastic push base.

5. A test strip testing connector according to claim 4, characterized in that, The handle has a cylindrical structure.

6. A test strip testing connector according to claim 2, characterized in that, The plastic base has positioning posts at one diagonal position and positioning holes at the other diagonal position for engaging with the positioning posts; the outer wall of the positioning posts is provided with circumferentially arranged protrusions; the protrusions are interference-fitted with the positioning holes.

7. A test strip testing connector according to claim 2, characterized in that, The plastic base is provided with slide rails on both sides; the plastic push base is provided with L-shaped sliding arms at both ends; the sliding arms are slidably connected to the slide rails.

8. A test strip testing connector according to claim 7, characterized in that, The slide rail has an inclined surface; the angle between the inclined surface and the vertical surface of the slide arm is 37-43 degrees.

9. A test strip testing connector according to claim 7, characterized in that, The gap between the horizontal bottom surface of the slide rail and the horizontal surface of the slide arm is 0.05-0.1mm.

10. A test strip testing connector according to claim 1, characterized in that, Each of the aforementioned front contact terminals and each of the aforementioned rear contact terminals is provided with a soldering foot; the end of the soldering foot is provided with an inclined portion; the angle between the inclined portion and the horizontal plane is 20-26 degrees.

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