A BGM test strip connector with test strip elastic clamping function

Abstract

This invention relates to the field of blood glucose test strip connector technology, and in particular discloses a BGM test strip connector with a test strip elastic clamping function; it includes a circuit board, a test strip socket, a terminal assembly, and an elastic clamping component; the test strip socket is disposed on the surface of the circuit board; the test strip socket is provided with a test strip slot for inserting BGM test strips; the tail end of the terminal assembly is electrically connected to a pre-set soldering pin on the circuit board, and the elastic contact end of the terminal assembly extends into the test strip slot to form an electrical contact with the guide pin of the inserted BGM test strip, and forms an elastic cantilever structure in the test strip slot to provide basic clamping force for the BGM test strip; the elastic clamping component is disposed at the opening of the test strip socket near the test strip slot, and the elastic clamping component has an elastic clamping end extending toward the test strip slot; the elastic clamping end is used to apply an independent elastic clamping force to the side of the BGM test strip when it is located in the test strip slot, and works together with the terminal assembly to provide additional insertion and removal retention force for the BGM test strip.

Description

Technical Field

[0001] This invention relates to the field of blood glucose test strip connection accessories, and in particular discloses a BGM test strip connector with elastic clamping function for test strip pieces. Background Technology

[0002] Existing conventional BGM test strip connectors rely solely on the elastic cantilever structure of the internal conductive terminals to provide a single clamping force for the test strip. The overall clamping and fixing structure is simple and has limited elasticity reserves. Under conditions such as test strip insertion and removal, slight vibration of the device, or daily shaking during handling, the test strip is prone to loosening, shifting, or even slight detachment. This not only leads to poor contact between the conductive terminals and the test strip leads, causing problems such as interrupted detection signals, distorted data acquisition, and deviation in detection results, but also reduces the positioning stability of the test strip after insertion and the overall reliability of the device, failing to meet the requirements for high-precision and high-stability blood glucose testing. Summary of the Invention

[0003] In order to overcome the shortcomings and deficiencies of the existing technology, the purpose of this invention is to provide a BGM test strip connector with test strip elastic clamping and fixing function, which can be applied to blood glucose testing equipment to achieve stable insertion of blood glucose test strips and improve the overall reliability of the equipment.

[0004] To achieve the above objectives, the present invention provides a BGM test strip connector with elastic clamping function, comprising a circuit board, a test strip socket, a terminal assembly, and an elastic clamping component; the test strip socket is disposed on the surface of the circuit board; the test strip socket is provided with a test strip slot for inserting BGM test strips; the tail end of the terminal assembly is electrically connected to a pre-set soldering pin on the circuit board, and the elastic contact end of the terminal assembly extends into the test strip slot to form electrical contact with the guide pin of the inserted BGM test strip, and forms an elastic cantilever structure within the test strip slot to provide basic clamping force for the BGM test strip; the elastic clamping component is disposed at the opening of the test strip socket near the test strip slot, and the elastic clamping component is provided with an elastic clamping end extending toward the test strip slot; the elastic clamping end is used to apply an independent elastic clamping force to the side of the BGM test strip when it is located in the test strip slot, and works together with the terminal assembly to provide additional insertion and removal retention force for the BGM test strip.

[0005] Furthermore, the elastic clamping component includes a fixed arm, a first elastic arm, and an elastic sheet; the fixed arm is disposed on the circuit board and / or the test strip socket, the first elastic arm is disposed at the free end of the fixed arm, the elastic sheet is disposed at the free end of the first elastic arm, and the extending direction of the elastic sheet intersects with the extending direction of the free end of the first elastic arm; the elastic sheet has an arc-shaped protrusion extending toward the test strip slot; the first elastic arm and the elastic sheet together constitute the elastic clamping end of the elastic clamping component, and the arc-shaped protrusion is used to abut against the side wall of the BGM test strip.

[0006] Furthermore, the elastic sheet includes a first bent segment, a first straight segment, a second bent segment, and a second straight segment; the first bent segment connects the first elastic arm and the first straight segment, the first straight segment connects the first bent segment and the second bent segment, the second bent segment connects the first straight segment and the second straight segment, and the second straight segment extends in a free cantilever shape; the second bent segment forms an arc-shaped protrusion; the first bent segment, the first straight segment, the second bent segment, and the second straight segment are sequentially connected to form an S-shaped structure.

[0007] Furthermore, the fixed arm, the first elastic arm, and the elastic sheet are integral elastic components formed by continuous bending.

[0008] Furthermore, the test strip socket is provided with an avoidance groove, which is adapted to the shape of the first elastic arm and the elastic sheet so that the first elastic arm and the elastic sheet are elastically accommodated in the avoidance groove; the side wall of the avoidance groove is provided with an avoidance hole that communicates with the test strip slot, and the side wall of the BGM test strip enters the avoidance groove through the avoidance hole so that the arc-shaped protrusion of the elastic sheet abuts against its side wall.

[0009] Furthermore, the test strip socket is also provided with a limiting slot and an installation rib located between the avoidance slot and the limiting slot; the first elastic arm and the fixed arm form a U-shaped bend, and the installation rib is accommodated in the U-shaped cavity of the U-shaped bend; both sides of the fixed arm are provided with positioning ears, and the fixed arm is inserted into the limiting slot through the positioning ears.

[0010] Furthermore, the positioning ear has a reference edge that is flat and fits against the side wall of the limiting slot, and a damping abutment edge that is in the shape of a continuous concave-convex arc; in the assembled state, the damping abutment edge is interference-fitted with the side wall of the limiting slot.

[0011] Furthermore, the terminal assembly includes a plurality of conductive terminals spaced apart along the width direction of the test strip slot; each conductive terminal extends from the circuit board into the test strip slot and includes, in sequence, a soldering section, a mounting section, a first extension section, a first inclined section, and a second inclined section; the soldering section is soldered to the soldering pins of the circuit board for conduction, the mounting section is fitted with the test strip socket, a third bending section is provided between the first extension section and the first inclined section, and a fourth bending section is provided between the first inclined section and the second inclined section; The first inclined section extends inclinedly towards the surface of the circuit board and towards the entrance of the test strip slot; the second inclined section extends inclinedly away from the surface of the circuit board and towards the entrance of the test strip slot; the fourth bent section is used to elastically press against the guide foot of the BGM test strip inserted into the test strip slot; the fourth bent sections of each conductive terminal together constitute the elastic contact end of the terminal assembly; the soldered sections of each conductive terminal together constitute the tail end of the terminal assembly.

[0012] Furthermore, the welding section, the mounting section, the first extension section, the first inclined section, and the second inclined section are integrally stamped and bent from the same conductive metal sheet; the mounting section includes a laterally extending limiting arm and a vertically extending positioning claw, the limiting arm and the positioning claw forming a stepped mounting structure; the positioning claw is formed by bending from the welding section toward the test paper slot, and the limiting arm is located between the first inclined section and the positioning claw; the test paper socket is provided with a receiving slot adapted to the mounting section, the limiting arm is mounted in the lateral slot of the receiving slot, the positioning claw is mounted in the vertical slot of the receiving slot, and the side wall of the lateral slot of the receiving slot is provided with a first stop part that cooperates with the limiting arm to stop.

[0013] Furthermore, the receiving channel is interconnected with the test paper slot; the locking section of the conductive terminal is detachably installed in the receiving channel.

[0014] Preferably, the mounting section of the conductive terminal and the test paper socket are integrally formed by insert injection molding process.

[0015] Furthermore, the test strip socket is provided with a ventilation hole, which is a narrow through hole extending along the insertion and removal direction of the BGM test strip. The ventilation hole is connected to the test strip detection area of ​​the test strip slot, allowing outside air to enter the interior of the test strip slot through the ventilation hole, providing the necessary oxygen for the biochemical reaction between the BGM test strip and the blood sample.

[0016] Furthermore, there are multiple ventilation holes, each of which penetrates the side wall of the test strip slot along the insertion direction perpendicular to the BGM test strip; a stop rib is formed between two adjacent ventilation holes; the first extension of the conductive terminals arranged on both sides of the test strip slot abuts against the top wall of the test strip slot; the first extension of the conductive terminals arranged in the middle of the test strip slot abuts against the stop rib; and the gap between two adjacent conductive terminals communicates with the ventilation holes.

[0017] Furthermore, there are 6 ventilation holes. With the insertion direction of the BGM test strip as the horizontal direction, 3 ventilation holes are located on the top wall of the test strip socket, and the other 3 ventilation holes are located on the bottom wall of the test strip socket.

[0018] The beneficial effects of this invention are as follows: By adding an independent elastic clamping component to construct a dual elastic fixing structure, this invention effectively solves the core problems of poor stability, easy loosening and displacement of test strips, and easy distortion of detection signals caused by the single elastic clamping of traditional test strip connectors. It significantly improves the positioning firmness and anti-vibration interference capability of BGM test strips after insertion, ensuring that the conductive terminals and test strip leads always maintain a tight fit, and significantly improving the stability of blood glucose detection signal acquisition and the accuracy of detection results. At the same time, the integrated elastic component structure is simple and easy to assemble. Combined with a dedicated ventilation structure, it can ensure the oxygen required for the biochemical reaction of the test strip, taking into account the product's structural reliability, ease of assembly, and effectiveness of detection work, effectively extending the service life of the device and improving the overall performance of portable blood glucose testing devices. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the BGM test strip connector of the present invention; Figure 2 This is an exploded structural diagram of the BGM test strip connector of the present invention; Figure 3 This is a schematic diagram of the elastic clamping component of the present invention; Figure 4 This is a schematic diagram of the test strip socket of the present invention; Figure 5 This is an exploded structural diagram of the test paper socket and conductive terminals of the present invention. Figure 6 This is a schematic diagram of the structure of the conductive terminal of the present invention; Figure 7 This is a plan view of the BGM test strip of the present invention when it is not inserted into the test strip socket; Figure 8 This is a planar schematic diagram of the BGM test strip of the present invention inserted into the test strip socket.

[0020] The reference numerals in the figures include: 100. BGM test strip; 1. Circuit board; 2. Test strip socket; 3. Terminal assembly; 4. Elastic clamping component; 21. Test strip slot; 22. Clearance slot; 221. Clearance hole; 23. Limiting slot; 24. Mounting rib; 25. Receiving through slot; 251. Horizontal slot; 252. Vertical slot; 253. First stop; 26. Ventilation guide hole; 27. Stopping rib; 31. Conductive terminal; 311. Welding section; 312. Mounting section; 3 121. Limiting support arm; 3122. Positioning claw; 313. First extension section; 314. Third bending section; 315. First tilting section; 316. Fourth bending section; 317. Second tilting section; 41. Fixed arm; 411. Positioning ear; 412. Reference edge; 413. Damping abutment edge; 42. First elastic arm; 43. Elastic plate; 431. First bending section; 432. First straight section; 433. Second bending section; 434. Second straight section. Detailed Implementation

[0021] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided below.

[0022] Please see Figures 1 to 8 As shown, the BGM test strip 100 connector with elastic clamping function of test strips according to the present invention mainly consists of a circuit board 1, a test strip socket 2, a terminal assembly 3 and an elastic clamping component 4. The test strip socket 2 is fixedly installed on the upper surface of the circuit board 1. The front end of the test strip socket 2 is provided with a test strip slot 21 extending inward in the horizontal direction. The BGM test strip 100 can be inserted into the test strip slot 21 from the slot opening in the insertion and removal direction.

[0023] The tail end of the terminal assembly 3 is soldered and fixed on the circuit board 1 and forms an electrical connection with the preset soldering pin. The elastic contact end of the terminal assembly 3 extends forward into the internal cavity of the test paper slot 21, forming an elastic cantilever structure that is cantilevered forward. When the BGM test paper 100 is inserted into place, the elastic contact end of the terminal assembly 3 elastically presses against the guide pin on the lower surface of the BGM test paper 100, thus realizing the conduction of electrical signals. At the same time, the elastic force generated by its own elastic deformation provides a basic upward pressing force for the BGM test paper 100.

[0024] In this embodiment, two elastic clamping components 4 are provided. The two elastic clamping components 4 are symmetrically arranged on the left and right sides of the test strip socket 2 near the opening of the test strip slot 21. Each elastic clamping component 4 is provided with an elastic clamping end extending toward the inside of the test strip slot 21. The elastic clamping end protrudes into the side wall area of ​​the test strip slot 21. When the BGM test strip 100 is inserted into the test strip slot 21, the elastic clamping end applies an independent lateral elastic clamping force to the side edge of the BGM test strip 100 from the left and right sides. This clamping force and the vertical base pressing elastic force provided by the terminal assembly 3 form a compound clamping effect, which together provide the BGM test strip 100 with additional insertion and removal retention force and anti-loosening ability.

[0025] Compared to existing test paper connectors that rely solely on conductive terminals 31 for a single clamping force, this solution constructs a dual-elasticity fixing system by adding an independent lateral elastic clamping component 4. This significantly improves the holding force and anti-vibration offset capability after the test paper is inserted, effectively avoiding poor contact problems caused by test paper loosening.

[0026] Specifically, in this embodiment, each elastic clamping component 4 consists of three parts: a fixed arm 41, a first elastic arm 42, and an elastic sheet 43. The fixed arm 41 has an "L"-shaped sheet structure. The horizontal part is welded to the circuit board 1, and the vertical part serves as a vertical sidewall of the U-shaped bend. The fixed arm 41 is fixed in the limiting slot 23 of the test paper socket 2 by the positioning ear 411. The U-shaped bend is assembled on the mounting rib 24, which plays an auxiliary limiting role for the test paper socket 2.

[0027] The first elastic arm 42 bends forward from the upper end of the fixed arm 41, forming a cantilever structure that is cantilevered forward. The elastic sheet 43 is connected to the free end of the first elastic arm 42. The overall extension direction of the elastic sheet 43 intersects with the extension direction of the first elastic arm 42 and extends forward in a curved manner along the insertion and removal direction of the test paper.

[0028] The elastic sheet 43 has an arc-shaped protrusion extending into the test paper slot 21 in the middle. The arc-shaped protrusion can swing back and forth in the clearance slot 22 by means of the elastic deformation of the elastic sheet 43 and the first elastic arm 42. The first elastic arm 42 and the elastic sheet 43 together constitute the elastic clamping end of the elastic clamping component 4. Relying on the overall cantilever elastic deformation of the first elastic arm 42 and the local elastic deformation of the elastic sheet 43, the arc-shaped protrusion is stably pressed against the side wall of the BGM test paper 100, providing a continuous lateral clamping force.

[0029] Compared to existing connectors without independent lateral clamping structures, this solution uses a split cantilever + elastic sheet 43 double-layer elastic structure to ensure sufficient clamping force and optimize the elastic force curve, avoiding excessive insertion and extraction resistance that affects the user experience.

[0030] Specifically, in this embodiment, the elastic sheet 43 is composed of a first bent section 431, a first straight section 432, a second bent section 433, and a second straight section 434 connected in sequence.

[0031] The first end of the first bent segment 431 is connected to the free end of the first elastic arm 42. The first bent segment 431 is bent toward the test paper slot 21 and then connected to the first end of the first straight segment 432. The first straight segment 432 extends forward horizontally along the test paper insertion and removal direction. The tail end of the first straight segment 432 is connected to the second bent segment 433. The second bent segment 433 is bent away from the test paper slot 21 and then connected to the second straight segment 434. The second straight segment 434 extends forward in a free cantilever shape along the test paper insertion and removal direction.

[0032] The outwardly protruding second bending segment 433 is the arc-shaped protrusion of the elastic sheet 43. The overall structure of the elastic sheet 43 is a continuously bent S-shaped structure when viewed from the side. When the BGM test paper 100 is inserted, the side wall of the test paper contacts and pushes the second bending segment 433 outward. After being inserted into place, the second bending segment 433 elastically resets and presses against the side wall of the test paper.

[0033] Compared to the common single-point protrusion clamping structure in existing technologies, this solution adopts an S-shaped continuously bent elastic sheet 43 structure, which makes the insertion and removal process smoother and without any jamming. At the same time, the elastic deformation stroke is longer, the elastic force is more stable and durable, and it is not easy to cause plastic deformation failure after long-term use.

[0034] Preferably, in this embodiment, the fixed arm 41, the first elastic arm 42 and the elastic sheet 43 are integrally formed from the same elastic metal sheet through continuous stamping and bending processes, forming an integral elastic component with no splicing or welding structure between the segments.

[0035] Preferably, the metal sheet is beryllium copper alloy strip, but phosphor bronze or stainless steel elastic steel strip can also be used. Beryllium copper combines high elastic limit, excellent fatigue resistance, and good stamping performance. Even after tens of thousands of insertion and extraction deformations, it is not easy to undergo permanent plastic deformation, and the elastic force output is stable over a long period of time. Phosphor bronze sheet is less expensive and has moderate elasticity, which can meet the requirements of low to medium frequency insertion and extraction conditions. Stainless steel strip has stronger corrosion resistance and is suitable for long-term use in humid environments.

[0036] In another embodiment, the plastic part can also be integrally injection molded. For example, glass fiber reinforced POM or PA66 plastic materials can be selected, and lateral clamping can be achieved by relying on the bending resilience of the plastic itself.

[0037] Compared to the assembled elastic clamping components in existing technologies, the integrated structure of this solution has higher processing precision, better structural strength, and more stable elasticity consistency. At the same time, it reduces assembly processes and lowers production and manufacturing costs.

[0038] Specifically, in this embodiment, the test strip socket 2 has clearance grooves 22 on both the left and right side walls. The internal contour shape of the clearance grooves 22 is adapted to the external contour of the first elastic arm 42 and the elastic sheet 43 (viewed from a top view, the clearance grooves 22 are roughly "spoon" shaped). The first elastic arm 42 and the elastic sheet 43 are housed in the internal cavity of the clearance grooves 22 and can perform elastic deformation activities in the grooves.

[0039] An avoidance hole 221 is provided on the inner side wall of the avoidance groove 22 near the test strip slot 21. The avoidance hole 221 connects the avoidance groove 22 and the internal space of the test strip slot 21. With the help of the "spoon"-shaped structure of the avoidance groove 22, when the front end (guide end) of the BGM test strip 100 is inserted into the test strip slot 21, it passes through the avoidance groove 22 and is directly exposed to the "spoon"-shaped part of the avoidance groove 22. The arc-shaped protrusion (second bending section 433) of the elastic sheet 43 protrudes towards the avoidance hole 221 at the "spoon"-shaped part. Thus, after the BGM test strip 100 is inserted, its front edge can also slightly enter the area of ​​the avoidance groove 22 and form a contact fit with the arc-shaped protrusion of the elastic sheet 43.

[0040] Compared to the structure of the existing technology where the elastic component is exposed, this solution uses the built-in avoidance groove 22 to accommodate the elastic clamping component, which can not only protect the elastic component from damage by external force collision, but also limit the deformation range of the elastic component to avoid excessive deformation leading to failure, while reducing the overall size of the connector.

[0041] Preferably, in another embodiment, the left and right sidewalls of the BGM test paper 100 are provided with lateral positioning grooves corresponding to the positions of the arc-shaped protrusions of the elastic sheet 43. The inner contour of the positioning grooves is adapted to the arc-shaped shape of the second bending segment 433 (i.e., the arc-shaped protrusion).

[0042] When the BGM test strip 100 is inserted into the test strip slot 21, the second bent section 433 of the elastic sheet 43 elastically engages in the lateral positioning groove, forming an axial locking structure.

[0043] The two lateral positioning grooves can be set in an asymmetrical layout, or a positioning groove can be set only on one side of the test strip. Together with the elastic piece 43 on one side of the test strip socket 2, they form a foolproof structure. When the BGM test strip 100 is inserted backwards, the side cannot be properly locked with the elastic piece 43, and the insertion resistance will increase significantly, thus reminding the operator to correct the insertion direction.

[0044] Compared to conventional test strip structures with smooth sidewalls, this solution utilizes the lateral positioning groove of the BGM test strip 100 and the concave-convex engagement of the arc-shaped protrusion of the elastic sheet 43. This provides clear tactile feedback when the strip is inserted correctly, facilitating operator judgment of the insertion status. It also creates axial physical limits, further enhancing the anti-loosening holding force and insertion stability of the BGM test strip 100. Simultaneously, it achieves physical foolproofing, preventing detection failures caused by reverse insertion of the BGM test strip 100. Furthermore, it requires no modification to the main structure of the test strip socket 2, resulting in extremely low modification costs.

[0045] Specifically, in this embodiment, a limiting slot 23 is also provided on the side wall of the test strip socket 2. The limiting slot 23 is located outside the avoidance slot 22, and the avoidance slot 22 and the limiting slot 23 are separated by the mounting rib 24.

[0046] The connection between the first elastic arm 42 and the fixed arm 41 forms a U-shaped bend with the opening facing downwards. During assembly, the U-shaped bend is inserted into the mounting rib 24 from top to bottom, so that the mounting rib 24 is accommodated in the U-shaped cavity of the U-shaped bend, thereby achieving positioning in the front and rear directions.

[0047] Specifically, the volume of the U-shaped cavity is greater than the volume of the mounting rib 24, and the width of the U-shaped cavity is greater than the width of the mounting rib 24, so that an assembly gap is formed between the U-shaped cavity and the mounting rib 24; the deformation of the first elastic arm 42 and the elastic sheet 43 depends on the volume of the clearance slot 22 and the assembly gap between the mounting rib 24 and the U-shaped cavity.

[0048] The fixed arm 41 has positioning ears 411 extending outward on both the left and right sides. The fixed arm 41 is inserted into the limiting slot 23 from top to bottom. The positioning ears 411 on both sides are engaged in the corresponding slots of the limiting slot 23 to achieve vertical and horizontal limiting fixation.

[0049] Compared to the welded and fixed elastic component structure in the existing technology, this solution adopts a slot-mounted assembly method, which is convenient for installation and disassembly, requires no welding process, and facilitates later maintenance and replacement. At the same time, the U-shaped bend and the positioning method of the mounting rib 24 ensure high positioning accuracy and make the structure stable and not easy to loosen after assembly.

[0050] Specifically, in this embodiment, each positioning ear 411 has at least two sides, one of which is a flat reference side 412. After assembly, the reference side 412 fits flat against the corresponding side wall of the limiting slot 23, serving as the positioning reference surface for assembly and ensuring the accurate installation angle of the elastic clamping component 4. The other side is a damping abutment side 413 with a continuous concave-convex arc shape (optionally similar to a "ratchet" structure). In the assembled state, the damping abutment side 413 forms an interference fit with the corresponding side wall of the limiting slot 23. The damping friction force is generated by the elastic compression of the concave-convex arc structure to prevent the fixing arm 41 from accidentally coming out of the limiting slot 23.

[0051] Compared to the ordinary flat snap-fit ​​structure in the existing technology, this solution ensures positioning accuracy through the reference edge 412, and improves the snap-fit ​​firmness through the interference fit of the damping abutment edge 413. Stable installation can be achieved without additional glue or spot welding, resulting in higher assembly efficiency.

[0052] Specifically, in this embodiment, the terminal assembly 3 is composed of a plurality of conductive terminals 31, all of which are arranged in parallel at equal intervals along the width direction of the test paper slot 21.

[0053] Each conductive terminal 31 extends forward from the circuit board 1 into the test paper slot 21 and is divided into a soldering section 311, a mounting section 312, a first extension section 313, a first inclined section 315, and a second inclined section 317 along its length. The soldering section 311 is located at the very end of the terminal and is horizontally attached and soldered to the soldering pad of the circuit board 1 to achieve electrical conduction.

[0054] The snap-fit ​​section 312 is located in front of the welding section 311 and is snap-fitted and fixed in the receiving slot 25 of the test paper socket 2 to realize the installation and fixation of the terminal on the socket.

[0055] The first extension section 313 extends horizontally forward from the mounting section 312. A third bending section 314 is provided at the connection between the first extension section 313 and the first inclined section 315. After being bent by the third bending section 314, the first inclined section 315 extends downward towards the surface of the circuit board 1, while extending forward towards the entrance of the test paper slot 21.

[0056] A fourth bending section 316 is provided at the connection between the first inclined section 315 and the second inclined section 317. After being bent by the fourth bending section 316, the second inclined section 317 extends upward in a direction away from the surface of the circuit board 1, and at the same time extends forward in a direction close to the entrance of the test paper slot 21.

[0057] The fourth bends 316 of all conductive terminals 31 together constitute the elastic contact end of the terminal assembly 3. The top edge of the fourth bend 316 is used to elastically press against the guide foot of the lower surface of the BGM test paper 100 inserted into the test paper slot 21. The solder sections 311 of all conductive terminals 31 together constitute the tail end of the terminal assembly 3.

[0058] Compared to the conventional straight-arm elastic terminals in existing technologies, this solution adopts a multi-segment bent cantilever terminal structure, which has a longer elastic deformation stroke and more stable contact pressure. At the same time, the double-tilted segment structure can optimize the stress state of the terminal, improve the fatigue resistance after long-term insertion and removal, and extend the service life of the terminal.

[0059] Specifically, in this embodiment, the welding section 311, the mounting section 312, the first extension section 313, the first inclined section 315, and the second inclined section 317 of a single conductive terminal 31 are formed from the same conductive metal sheet through an integral stamping and bending process.

[0060] The conductive metal sheet is preferably a beryllium copper alloy sheet with a nickel and gold plating layer on the surface; phosphor bronze sheet can also be used. The beryllium copper substrate possesses excellent conductivity and high fatigue resistance, maintaining stable contact pressure over a long period. The gold plating layer reduces contact resistance, prevents oxidation and blackening, and ensures stable electrical signal transmission. Phosphor bronze sheet offers better cost-effectiveness and good conductivity, meeting the production needs of large-scale civilian testing equipment.

[0061] The mounting section 312 specifically includes a horizontally extending limiting arm 3121 and a vertically extending positioning claw 3122. The limiting arm 3121 protrudes horizontally along the width direction of the terminal, and the positioning claw 3122 extends downward vertically. The two together form a stepped mounting structure.

[0062] The positioning claw 3122 is formed by bending downward from the front end of the welding section 311, and the limiting arm 3121 is located between the tail end of the first inclined section 315 and the positioning claw 3122.

[0063] The test paper socket 2 has a receiving groove 25 that is perfectly matched to the shape of the mounting section 312. The receiving groove 25 is divided into an upper horizontal groove 251 and a lower vertical groove 252. During assembly, the limiting arm 3121 is snapped into the horizontal groove 251 and the positioning claw 3122 is snapped into the vertical groove 252. The front side wall of the horizontal groove 251 has a forward-protruding first stop 253. The first stop 253 stops on the front side of the limiting arm 3121 to prevent the terminal from coming out forward.

[0064] Preferably, the width of the limiting arm 3121 is greater than the width of the positioning claw 3122 and greater than the width of the first extension 313.

[0065] Compared to the simple plug-in terminal installation structure in existing technologies, this solution adopts a stepped locking and stop structure, which ensures that the terminal is firmly positioned after installation and is limited in the front-back and up-down directions. The terminal will not shift or loosen when inserting or removing the test paper, thus ensuring the accuracy and stability of the contact position.

[0066] Specifically, in this embodiment, the internal cavity of the receiving groove 25 and the test paper slot 21 are interconnected, and the main body of the conductive terminal 31 extends from the receiving groove 25 into the interior of the test paper slot 21.

[0067] In one embodiment, the mounting section 312 of the conductive terminal 31 is detachably mounted in the receiving slot 25, which facilitates production assembly and subsequent replacement in case of damage.

[0068] As another preferred embodiment, the mounting section 312 of the conductive terminal 31 and the test paper socket 2 are integrally formed by injection molding insert process, which has stronger overall structure and better sealing performance and structural strength.

[0069] Specifically, in this embodiment, the test strip socket 2 is provided with a ventilation hole 26. The ventilation hole 26 is a narrow through hole extending along the insertion and removal direction of the BGM test strip 100. The position of the ventilation hole 26 corresponds to and is connected to the test strip detection area inside the test strip slot 21. Outside air can freely enter and exit the test strip slot 21 through the ventilation hole 26, providing the necessary oxygen for the enzymatic biochemical reaction between the BGM test strip 100 and the blood sample after insertion, ensuring that the reaction proceeds fully.

[0070] This solution adds a dedicated ventilation hole 26 to ensure sufficient oxygen supply to the test strip detection area, avoid incomplete biochemical reactions due to lack of oxygen, and improve the accuracy of test results.

[0071] Specifically, in this embodiment, the number of ventilation guide holes 26 is set to multiple, and each ventilation guide hole 26 penetrates the top and bottom walls of the test paper slot 21 along the insertion direction perpendicular to the BGM test paper 100.

[0072] The solid portion between two adjacent ventilation holes 26 forms a stop rib 27. The upper surface of the first extension 31 of the conductive terminals 31 arranged on the left and right sides of the test paper slot 21 abuts against the inner wall of the top wall of the test paper slot 21. The upper surface of the first extension 31 of the conductive terminals 31 arranged in the middle of the test paper slot 21 abuts against the lower surface of the stop rib 27.

[0073] The gap between two adjacent conductive terminals 31 is connected to the upper ventilation hole 26, forming an air circulation channel.

[0074] Compared to connectors without a flow guiding structure in the prior art, this solution forms a through-hole air passage by combining the strip-shaped through hole with the terminal gap, which has higher air passage efficiency. At the same time, the stop rib 27 can provide upper limit support for the conductive terminal 31, limiting the excessive upward deformation of the terminal and avoiding plastic deformation failure of the terminal.

[0075] Preferably, in this embodiment, a total of 6 ventilation holes 26 are provided, with the insertion direction of the BGM test paper 100 as the horizontal front-back direction. Among them, 3 ventilation holes 26 are arranged at intervals on the top wall of the test paper socket 2, and the other 3 ventilation holes 26 are arranged at intervals on the bottom wall of the test paper socket 2, which are symmetrically arranged to form a ventilation structure with vertical convection.

[0076] Specifically, in this embodiment, the circuit board 1 has a U-shaped through slot, forming a U-shaped hollow structure. The test strip socket 2 has a T-shaped cross-section and can be horizontally embedded into the U-shaped through slot of the circuit board 1. The lower part of the test strip socket 2 can be sunk and accommodated in the through slot space of the circuit board 1.

[0077] The front end of the test strip socket 2 near the opening of the slot 21 is locked and limited to the surface of the circuit board 1 by the fixing arms 41 of the two elastic supporting components. The rear end away from the slot opening is fixed by the welding and clamping structure of multiple conductive terminals 3, so that most of the structure of the test strip socket 2 sinks down and is stored in the hollow slot of the circuit board 1.

[0078] Compared to the traditional flat circuit board structure where sockets can only be stacked and installed on the top of the board, this solution uses a U-shaped through groove to form a sunken accommodating space, effectively embedding the test paper socket 2 part of the structure into the circuit board 1, greatly reducing the overall assembly height of the connector and achieving an ultra-thin product design. At the same time, the front and rear ends are respectively fixed by elastic locking and terminal clips, ensuring a firm assembly and high positioning accuracy.

[0079] The multiple sets of ventilation and guide holes 26 arranged symmetrically at the top and bottom of this design have better air convection effect, more sufficient and uniform oxygen replenishment in the detection area, and further ensure the stability of biochemical reactions.

[0080] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A BGM test strip connector having a test strip elastic clamping function, characterized in that: The circuit includes a circuit board (1), a test strip socket (2), a terminal assembly (3), and a spring-loaded clamping component (4). The test strip socket (2) is disposed on the surface of the circuit board (1). The test strip socket (2) is provided with a test strip slot (21) for inserting BGM test strips (100). The tail end of the terminal assembly (3) is electrically connected to the pre-set soldering pins of the circuit board (1). The elastic contact end of the terminal assembly (3) extends into the test strip slot (21) to form an electrical contact with the lead of the inserted BGM test strip (100). The test strip slot (21) forms an elastic cantilever structure to provide basic clamping force for the BGM test strip (100); the elastic clamping component (4) is provided on the test strip socket (2), and the elastic clamping component (4) is provided with an elastic clamping end extending toward the test strip slot (21); the elastic clamping end is used to apply an independent elastic clamping force to the side of the BGM test strip (100) when it is located in the test strip slot (21), and works together with the terminal assembly (3) to provide additional insertion and removal retention force for the BGM test strip (100).

2. The BGM test strip connector having a test strip elastic clamping function according to claim 1, characterized in that: The elastic clamping component (4) includes a fixed arm (41), a first elastic arm (42), and an elastic sheet (43); the fixed arm (41) is disposed on the circuit board (1) and / or the test strip socket (2), the first elastic arm (42) is disposed at the free end of the fixed arm (41), and the elastic sheet (43) is disposed at the free end of the first elastic arm (42). The extension direction of the elastic sheet (43) intersects with the extension direction of the free end of the first elastic arm (42); the elastic sheet (43) has an arc-shaped protrusion protruding towards the test strip slot (21); the first elastic arm (42) and the elastic sheet (43) together constitute the elastic clamping end of the elastic clamping component, and the arc-shaped protrusion is used to abut against the side wall of the BGM test strip (100).

3. The BGM test strip connector with elastic clamping function for test strips according to claim 2, characterized in that: The elastic sheet (43) includes a first bent segment (431), a first straight segment (432), a second bent segment (433), and a second straight segment (434); the first bent segment (431) is connected between the first elastic arm (42) and the first straight segment (432), the first straight segment (432) is connected between the first bent segment (431) and the second bent segment (433), the second bent segment (433) is connected between the first straight segment (432) and the second straight segment (434), and the second straight segment (434) extends in a free cantilever shape; the second bent segment (433) constitutes the arc-shaped protrusion; the first bent segment (431), the first straight segment (432), the second bent segment (433), and the second straight segment (434) are connected in sequence to form an S-shaped structure.

4. The BGM test strip connector with elastic clamping function for test strips according to claim 2, characterized in that: The fixed arm (41), the first elastic arm (42) and the elastic sheet (43) are integral elastic components formed by continuous bending.

5. The BGM test strip connector with elastic clamping function for test strips according to claim 2, characterized in that: The test strip socket (2) is provided with a clearance groove (22), which is adapted to the shape of the first elastic arm (42) and the elastic sheet (43) so that the first elastic arm (42) and the elastic sheet (43) are elastically accommodated in the clearance groove (22); the side wall of the clearance groove (22) is provided with a clearance hole (221) that communicates with the test strip slot (21), and the side wall of the BGM test strip (100) enters the clearance groove (22) through the clearance hole (221) so that the arc-shaped protrusion of the elastic sheet (43) abuts against its side wall.

6. The BGM test strip connector with elastic clamping function for test strips according to claim 5, characterized in that: The test paper socket (2) is also provided with a limiting slot (23) and an installation rib (24) located between the avoidance slot (22) and the limiting slot (23); the first elastic arm (42) and the fixed arm (41) form a U-shaped bend, and the installation rib (24) is housed in the U-shaped cavity of the U-shaped bend; both sides of the fixed arm (41) are provided with positioning ears (411), and the fixed arm (41) is inserted into the limiting slot (23) through the positioning ears (411).

7. The BGM test strip connector with elastic clamping function for test strips according to claim 6, characterized in that: The positioning ear (411) has a reference edge (412) that is flat and fits the side wall of the limiting slot (23) and a damping abutment edge (413) that is in a continuous concave-convex arc shape; in the assembled state, the damping abutment edge (413) is interference-fitted with the side wall of the limiting slot (23).

8. The BGM test strip connector with elastic clamping function for test strips according to claim 1, characterized in that: The terminal assembly (3) includes a plurality of conductive terminals (31) spaced apart along the width direction of the test paper slot (21); each conductive terminal (31) extends from the circuit board (1) into the test paper slot (21) and includes, in sequence, a soldering section (311), a mounting section (312), a first extension section (313), a first inclined section (315), and a second inclined section (317); the soldering section (311) is soldered to the soldering pin of the circuit board (1) for conduction, the mounting section (312) is fitted with the test paper socket (2), a third bending section (314) is provided between the first extension section (313) and the first inclined section (315), and a fourth bending section (316) is provided between the first inclined section (315) and the second inclined section (317). The first inclined section (315) extends inclinedly towards the surface of the circuit board (1) and towards the entrance of the test paper slot (21); the second inclined section (317) extends inclinedly away from the surface of the circuit board (1) and towards the entrance of the test paper slot (21); the fourth bent section (316) is used to elastically press against the guide foot of the BGM test paper (100) inserted into the test paper slot (21); the fourth bent section (316) of each conductive terminal (31) together constitutes the elastic contact end of the terminal assembly (3); the soldering section (311) of each conductive terminal (31) together constitutes the tail end of the terminal assembly (3).

9. The BGM test strip connector with elastic clamping function for test strips according to claim 8, characterized in that: The welding section (311), the mounting section (312), the first extension section (313), the first inclined section (315), and the second inclined section (317) are integrally stamped and bent from the same conductive metal sheet; the mounting section (312) includes a laterally extending limiting arm (3121) and a vertically extending positioning claw (3122), the limiting arm (3121) and the positioning claw (3122) forming a stepped mounting structure; the positioning claw (3122) is formed by bending from the welding section (311) toward the test paper slot (21), limiting... The positioning arm (3121) is located between the first inclined section (315) and the positioning claw (3122); the test paper socket (2) is provided with a receiving groove (25) that is adapted to the mounting section (312), the limiting arm (3121) is mounted in the transverse groove (251) of the receiving groove (25), the positioning claw (3122) is mounted in the vertical groove (252) of the receiving groove (25), and the side wall of the transverse groove (251) of the receiving groove (25) is provided with a first stop part (253) that cooperates with the limiting arm (3121).

10. The BGM test strip connector with elastic clamping function for test strips according to claim 1, characterized in that: The test strip socket (2) is provided with a ventilation hole (26). The ventilation hole (26) is a narrow through hole extending along the insertion and removal direction of the BGM test strip (100). The ventilation hole (26) is connected to the test strip detection area of ​​the test strip slot (21). Outside air can enter the interior of the test strip slot (21) through the ventilation hole (26) to provide the required oxygen for the biochemical reaction between the BGM test strip (100) and the blood sample.

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