Signal transmission device and blood glucose detector

Abstract

The invention discloses a signal transmission device and a blood glucose detector, and relates to the technical field of blood glucose detection.The signal transmission device is arranged to be electrically connected with a sensor used for monitoring blood glucose, the signal transmission device comprises a mounting plate, a circuit board and an elastic conductive piece, the mounting plate is provided with a bottom groove, the circuit board is arranged on the mounting plate, and the elastic conductive piece is arranged in the bottom groove; at least part of the circuit board covers the notch of the bottom groove in a sealing mode so that the circuit board and the bottom groove can define a closed installation cavity, at least part of the elastic conductive piece is arranged in the installation cavity, one end of the elastic conductive piece elastically abuts against the circuit board and is electrically connected with the circuit board, and the other end of the elastic conductive piece is arranged to electrically abut against the sensor. The circuit connection stability of the signal transmission device is improved, virtual connection is avoided, and therefore the detection continuity and accuracy of the blood glucose detector are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of blood glucose detection, and particularly to a signal transmission device and a blood glucose meter. Background Art

[0002] A continuous glucose monitor (CGM) is a blood glucose monitoring system composed of a microelectrode biosensing device (hereinafter referred to as a sensor) and a signal transmission device, which can continuously monitor blood glucose through electrochemical reactions for a long time (such as 7 days, 14 days or 21 days) to judge the health status of the user.

[0003] For the convenience of users, the sensor and the signal transmission device in the existing blood glucose monitors are of a separable structure. Therefore, it is necessary to lead out the conductive endpoints of the circuit board in the signal transmission device so as to directly connect with the sensor for circuit connection to realize signal transmission.

[0004] However, the conventional method of leading out the conductive endpoints by welding and gold wire connection has poor connection stability, which easily causes virtual connection inside the signal transmission device, thus affecting the circuit connection between the signal transmission device and the sensor, and affecting the continuity and accuracy of the blood glucose meter detection. Summary of the Invention

[0005] The main object of the present invention is to provide a signal transmission device and a blood glucose meter, aiming to improve the circuit connection stability of the signal transmission device, avoid virtual connection, and thus improve the detection continuity and accuracy of the blood glucose meter.

[0006] To achieve the above object, the present invention provides a signal transmission device, which is configured to be electrically connected to a sensor for monitoring blood glucose, and the signal transmission device includes: A mounting plate provided with a bottom groove; A circuit board disposed on the mounting plate, at least part of the circuit board sealingly covers the notch of the bottom groove so that the circuit board and the bottom groove enclose a sealed mounting cavity; and An elastic conductive member, at least part of the elastic conductive member is disposed in the mounting cavity, one end of the elastic conductive member elastically abuts against the circuit board and is electrically connected to the circuit board, and the other end of the elastic conductive member is configured to electrically abut against the sensor.

[0007] In one embodiment, the mounting plate is provided with a mounting hole, and the mounting hole communicates with the mounting cavity; Part of the elastic conductive member is sealingly disposed in the mounting hole to seal the mounting cavity.

[0008] In one embodiment, the signal transmission device further includes a conductive terminal, which is sealed in the mounting hole to seal the mounting cavity, and the conductive terminal is electrically connected to the sensor; The elastic conductive member is limited in the mounting cavity, and one end of the elastic conductive member away from abutting against the circuit board is electrically connected to the conductive terminal.

[0009] In one embodiment, the signal transmission device further includes a limiting plate, which is arranged in the mounting cavity, and the limiting plate is arranged at intervals with the circuit board and the bottom wall of the bottom groove; The limiting plate is provided with a limiting hole, and the elastic conductive member is limited in the limiting hole.

[0010] In one embodiment, the elastic conductive member includes a mounting section and an abutting section, and the mounting section is limited in the limiting hole; The abutting section is arranged on the mounting section, the abutting section is located on both sides of the limiting plate, and abuts against the conductive terminal and the circuit board.

[0011] In one embodiment, the abutting section can be elastically deformed to form a contact surface, and the contact surface is electrically abutted against the circuit board and the conductive terminal; and / or, along the extending direction from the end abutting against the circuit board to the end connected to the mounting section, the cross-sectional area of the abutting section is gradually increasing; and / or, along the extending direction from the end abutting against the conductive terminal to the end connected to the mounting section, the cross-sectional area of the abutting section is gradually increasing.

[0012] In one embodiment, the elastic conductive member includes an elastic matrix and conductive fillers, and the conductive fillers are distributed in the elastic matrix; The elastic matrix can be elastically deformed to elastically abut against the circuit board and elastically abut against the sensor.

[0013] In one embodiment, the mounting plate includes a plate body and a mounting seat, the mounting seat is arranged on the plate body, and the mounting seat is provided with the bottom groove; The circuit board is arranged on the plate body, and part of the circuit board abuts against the mounting seat to seal the notch of the bottom groove.

[0014] In one embodiment, the mounting plate further includes at least two hooks, and each hook is arranged on the plate body and arranged around the mounting seat; The circuit board is located between each hook and the mounting seat, and each hook cooperates with the mounting seat to limit and abut against the circuit board.

[0015] In one embodiment, the hook includes a support portion and a limiting portion. The support portion is disposed on the plate body, and the limiting portion is disposed at one end of the support portion away from the plate body. At least a part of the limiting portion is opposite to and spaced from the mounting seat, so that the limiting portion and the mounting seat cooperate to limit and abut against the circuit board.

[0016] In one embodiment, the hook is provided with a clamping surface, and the clamping surface abuts against the circuit board. The distance from the clamping surface to the mounting seat is less than the thickness of the circuit board, and at least a part of the mounting seat is made of an elastic material. And / or, the mounting plate further includes a first sealing ring, the first sealing ring is disposed on the mounting seat and surrounds the notch of the bottom groove, and the circuit board abuts against the first sealing ring.

[0017] In one embodiment, the signal transmission device further includes a face shell. The face shell and the mounting plate enclose a receiving cavity, and the circuit board is disposed in the receiving cavity. A sealing groove is provided on the periphery of the mounting plate, and the periphery of one end of the face shell facing the mounting plate is disposed in the sealing groove.

[0018] In one embodiment, the mounting plate further includes a second sealing ring, and the second sealing ring is disposed in the sealing groove. And / or, the sealing groove is provided with a sealant or a sealing coating. And / or, from the end of the face shell away from the mounting plate to the end connecting the mounting plate, the cross-sectional area thereof is gradually increasing.

[0019] The present invention also provides a blood glucose detector, which includes: The signal transmission device as described above; and A sensor, and the sensor is communicatively connected to the signal transmission device.

[0020] The signal transmission device of the technical solution of the present invention is arranged to be electrically connected to a sensor for monitoring blood glucose. The signal transmission device includes a mounting plate, a circuit board and an elastic conductive member. The mounting plate is provided with a bottom groove, the circuit board is arranged on the mounting plate, and at least part of the circuit board hermetically covers the notch of the bottom groove so that the circuit board and the bottom groove enclose a sealed mounting cavity. At least part of the elastic conductive member is arranged in the mounting cavity. One end of the elastic conductive member elastically abuts against the circuit board and is electrically connected to the circuit board. The other end of the elastic conductive member is arranged to electrically abut against the sensor. In this application, by arranging the elastic conductive member to lead out the conductive end point of the circuit board, the circuit connection between the sensor and the signal transmission device is realized, and through the elastic abutment between the elastic conductive member and the circuit board, the stability of the circuit connection between the elastic conductive member and the circuit board can be effectively improved, avoiding the possible virtual connection of the circuit connection between the sensor and the signal transmission device, and effectively improving the detection continuity and detection accuracy of the blood glucose detector. Brief Description of the Drawings

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0022] Figure 1 It is a schematic structural diagram of the signal transmission device in an embodiment of the present invention; Figure 2 It is an exploded schematic diagram of the signal transmission device in an embodiment of the present invention; Figure 3 It is a schematic cross-sectional view of the signal transmission device in an embodiment of the present invention; Figure 4 It is a schematic structural diagram of the mounting plate in an embodiment of the present invention; Figure 5 It is a schematic structural diagram of the elastic conductive member in an embodiment of the present invention; Figure 6 It is a schematic structural diagram of the blood glucose detector in an embodiment of the present invention; Figure 7 It is a schematic cross-sectional view of the blood glucose detector in an embodiment of the present invention.

[0023] Explanation of the reference numerals in the drawings: 100. Signal transmission device; 1. Mounting plate; 11. Plate body; 111. Sealing groove; 12. Mounting seat; 121. Bottom groove; 122. Mounting hole; 13. Hook; 131. Support part; 132. Limiting part; 133. Clamping surface; 14. Limiting plate; 141. Limiting hole; 15. Conductive terminal; 2. Circuit board; 21. Mounting cavity; 3. Elastic conductive part; 31. Mounting section; 32. Contact section; 321. Contact surface; 4. Face shell; 41. Accommodating cavity; 500. Blood glucose meter; 501. Sensor.

[0024] The realization, functional features and advantages of the object of the present invention will be further described with reference to the embodiments and the accompanying drawings. Detailed implementation manners

[0025] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0026] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present invention, the directional indications are only used to explain the relative positional relationship and movement conditions between components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0027] In addition, if there are descriptions such as "first", "second", etc. involved in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In addition, if "and / or" or "and / or" appears throughout the text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or a solution where A and B are satisfied simultaneously. In addition, the technical solutions between the embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention.

[0028] Please refer to Figures 1 to 4As shown in the figure, the present invention provides a signal transmission device 100, which is configured to be electrically connected to a sensor 501 for blood glucose monitoring. The signal transmission device 100 includes a mounting plate 1, a circuit board 2, and an elastic conductive member 3. The mounting plate 1 is provided with a bottom groove 121. The circuit board 2 is disposed on the mounting plate 1, and at least a part of the circuit board 2 hermetically covers the notch of the bottom groove 121, so that the circuit board 2 and the bottom groove 121 enclose a sealed mounting cavity 21. At least a part of the elastic conductive member 3 is disposed in the mounting cavity 21. One end of the elastic conductive member 3 elastically abuts against the circuit board 2 and is electrically connected to the circuit board 2. The other end of the elastic conductive member 3 is configured to electrically abut against the sensor 501.

[0029] In this embodiment, as Figure 6 shown, the signal transmission device 100 is applied to a blood glucose monitor 500, which is a medical device capable of monitoring blood glucose levels. The blood glucose monitor 500 can continuously and real-time detect the changes in the daily blood glucose of diabetic patients and record the blood glucose data in real-time, and is widely used in the daily blood glucose management of diabetic patients. The blood glucose detector 500 of the present application is attached to the skin to achieve continuous blood glucose detection.

[0030] Specifically, the blood glucose monitor 500 includes a sensor 501 and the above-mentioned signal transmission device 100. The sensor 501 is usually attached to the human skin, such as the upper arm or abdomen, and glucose oxidase is provided inside the sensor 501. Glucose oxidase can react with glucose in the tissue fluid to measure the glucose concentration in the tissue fluid and convert the detected glucose concentration into an electrical signal. The signal transmission device 100 is electrically connected to the sensor 501 to obtain the electrical signal about the glucose concentration in the sensor 501, and at the same time wirelessly transmits the obtained blood glucose data to a signal receiving device, such as a smart phone, a smart watch, a dedicated monitor, etc., to facilitate the user to view data, analyze data, retrieve data, etc.

[0031] In this embodiment, the signal transmission device 100 is used to be electrically connected to a sensor 501 for blood glucose monitoring to receive the electrical signal about the blood glucose concentration obtained by the sensor 501 and process the electrical signal. The signal transmission device 100 includes a mounting plate 1, a circuit board 2, and an elastic conductive member 3. The mounting plate 1 is a structural support component of the signal transmission device 100, which can be a support structure such as a base frame, a mounting frame, a base, a mounting plate, etc. A bottom groove 121 is provided on the mounting plate 1. The bottom groove 121 has a certain depth and edge. The bottom groove 121 can be opened on the plate body 11 of the mounting plate 1, that is, the notch of the bottom groove 121 is located on the plate surface of the mounting plate 1, or a mounting seat 12 or a mounting table can be provided on the mounting plate 1, and the bottom groove 121 is provided on the mounting seat 12 or the mounting table. The notch of the bottom groove 121 has a certain distance from the plate surface of the mounting plate 1, which is not limited herein.

[0032] Furthermore, the circuit board 2 is also disposed on the mounting board 1. On the basis of providing the bottom groove 121, at least part of the circuit board 2 hermetically covers the notch of the bottom groove 121, so that the circuit board 2 and the bottom groove 121 jointly enclose a sealed mounting cavity 21. For example, a sealing protrusion is provided in a circle on one of the notch of the bottom groove 121 and the side of the circuit board 2 covering the bottom groove 121, and a sealing groove is provided on the other of the notch of the bottom groove 121 and the side of the circuit board 2 covering the bottom groove 121. Through the tight fit between the sealing groove and the sealing protrusion, the mounting cavity 21 is hermetically sealed. At the same time, sealing members such as sealing silica gel, sealing rings, and sealants can also be provided in the sealing groove to further improve the sealing performance.

[0033] Wherein, at least part of the elastic conductive member 3 is disposed in the mounting cavity 21, and one end of the elastic conductive member 3 directly abuts against the circuit board 2 in the mounting cavity 21 and is electrically connected to the circuit board 2, and the other end of the elastic conductive member 3 is electrically abutted against the sensor 501.

[0034] It can be understood that on the one hand, the elastic conductive member 3 leads out the conductive end points of the circuit board 2, so that the sensor 501 can be electrically connected to the circuit board 2 by electrically abutting against the elastic conductive member 3, thereby realizing a stable circuit connection between the sensor 501 and the signal transmission device 100. And through the elastic abutment between the elastic conductive member 3 and the circuit board 2, the stability of the circuit connection between the elastic conductive member 3 and the circuit board 2 can be effectively improved, thereby ensuring the stability of the circuit connection between the sensor 501 and the signal transmission device 100, avoiding possible virtual connection and poor contact, and effectively improving the detection continuity and detection accuracy of the blood glucose detector 500.

[0035] Wherein, the elastic conductive member 3 has good flexibility and elasticity, so that the elastic conductive member 3 can adapt to the irregular surface of the circuit board 2, especially the contact part in contact with the circuit board 2, ensuring that the elastic conductive member 3 can always abut against the relevant contact part of the circuit board 2 and ensuring stable electrical contact. And through its own flexibility and elasticity, the elastic conductive member 3 can effectively absorb the vibration and impact generated by the outside world, maintain a stable elastic abutment with the circuit board 2, ensure a stable electrical connection of the signal transmission device 100 during the daily activities and sports of the user, reduce and avoid possible poor contact phenomena, and ensure the stable operation of the blood glucose detector 500. Further, based on the flexibility and elasticity of the elastic conductive member 3 itself, it can generate a large contact area through its own elastic deformation, so that it has a smaller contact resistance and improves the conductive performance. In the frequent abutment and compression of the sensor 501, it also has better anti-fatigue performance.

[0036] The elastic conductive member 3 includes an elastic matrix and a conductive filler. The material of the elastic matrix is a polymer, such as vulcanized silicone rubber, polylactic acid, polyvinyl alcohol, etc. The material of the conductive filler can be metal nanoparticles, carbon fibers, carbon black, graphite, carbon nanotubes, or conductive polymers, etc. Among them, the elastic matrix is the matrix structure of the elastic conductive member 3, which is used to provide a matrix for the conductive filler to be filled and distributed. The elastic matrix can be a solid structure or a hollow shell structure, so that the elastic matrix can be formed into a columnar structure, a capsule-like structure, a conical structure, etc. Based on the material of the elastic matrix, the elastic matrix has good mechanical properties and elastic deformation ability of the elastomeric material, such as having a relatively high compressive strength and tensile strength, etc., so as to ensure that the elastic conductive member 3 has a relatively low permanent deformation rate when compressed, and a relatively high elongation at break and tear strength when stretched, etc. At the same time, the elastic matrix is an insulating material, and the conductive filler is uniformly filled in the elastic matrix by means of melt mixing or solution mixing, so that a conductive network is formed inside the elastic conductive member 3 through the conductive filler, so that the overall elastic conductive member 3 can achieve circuit conduction. Among them, the conductive filler is a microscopic conductor at the nanoscale. After the conductive filler is fully filled inside the elastic matrix, the distance between adjacent conductive fillers also remains within the nanoscale range, so that the free flow of electrons is realized through the voltage difference between adjacent conductive fillers, so as to form a current and a conductive network inside the elastic conductive member 3. And even if a certain tensile deformation occurs in the elastic matrix in the elastic conductive member 3, the electrons in the adjacent conductive fillers can penetrate through the polymer region for conduction, so that the elastic conductive member 3 also has good electrical conductivity in the deformed state, especially in the stretched state. On the basis of filling the conductive filler to form a conductive network for the elastic conductive member 3, the elastic conductive member 3 also has good mechanical properties and elastic deformation ability, so as to be able to always maintain the elastic abutment of the elastic conductive member 3 with the circuit board 2 and the sensor 501 at the same time, so as to ensure good circuit connection between the elastic conductive member 3 and the circuit board 2, as well as good circuit connection, direct or indirect, with the sensor 501, and ensure the stability of the circuit connection between the sensor 501 and the signal transmission device 100, avoid possible virtual connection and poor contact, and effectively improve the detection continuity and detection accuracy of the blood glucose meter 500.

[0037] At the same time, through the bottom groove 121 formed by the circuit board 2 and the mounting plate 1, a closed mounting cavity 21 is jointly enclosed to seal the elastic conductive member 3 disposed therein. On the basis of realizing the electrical connection between the circuit board 2 and the external sensor 501, it is ensured that the elastic conductive member 3 is in a closed and isolated space, avoiding the erosion of the elastic conductive member 3 by external water vapor, sweat, etc., ensuring the normal use of the elastic conductive member 3, and the normal circuit conduction between the circuit board 2 and the sensor 501.

[0038] The signal transmission device 100 of the technical solution of the present invention is configured to be electrically connected to a sensor 501 for monitoring blood glucose. The signal transmission device 100 includes a mounting plate 1, a circuit board 2, and an elastic conductive member 3. The mounting plate 1 is provided with a bottom groove 121. The circuit board 2 is disposed on the mounting plate 1. At least a part of the circuit board 2 hermetically covers the notch of the bottom groove 121, so that the circuit board 2 and the bottom groove 121 enclose a sealed mounting cavity 21. At least a part of the elastic conductive member 3 is disposed in the mounting cavity 21. One end of the elastic conductive member 3 abuts against the circuit board 2 and is electrically connected to the circuit board 2. The other end of the elastic conductive member 3 is configured to electrically abut against the sensor 501. In this application, by providing the elastic conductive member 3 to lead out the conductive end points of the circuit board 2, the circuit connection between the sensor 501 and the signal transmission device 100 is realized. And through the elastic abutment between the elastic conductive member 3 and the circuit board 2, the stability of the circuit connection between the elastic conductive member 3 and the circuit board 2 can be effectively improved, avoiding the possible virtual connection of the circuit connection between the sensor 501 and the signal transmission device 100, and effectively improving the detection continuity and detection accuracy of the blood glucose detector 500.

[0039] In one embodiment, the mounting plate 1 is provided with a mounting hole 122, and the mounting hole 122 communicates with the mounting cavity 21; a part of the elastic conductive member 3 is hermetically disposed in the mounting hole 122 to seal the mounting cavity 21.

[0040] In this embodiment, the mounting hole 122 can be directly opened on the side wall or the bottom wall of the bottom groove 121 to communicate the mounting cavity 21 and the external space, or can be disposed on the mounting plate 1 and penetrate the side wall or the bottom wall of the bottom groove 121 to communicate with the mounting cavity 21. At the same time, it is not limited that the mounting hole 122 is a hole structure, and it can also be a mounting groove, a mounting cavity 21, a mounting channel and other structures, as long as the mounting cavity 21 and the external space can be connected. On the basis of setting the mounting cavity 21, a part of the elastic conductive member 3 is hermetically disposed in the mounting hole 122. For example, one end of the conductive spring pin is disposed in the mounting hole 122 and hermetically abuts against the hole wall of the mounting hole 122. The conductive spring pin can be hermetically abutted against the hole wall of the mounting hole 122 through a sealing ring or a sealant.

[0041] It can be understood that by providing the mounting hole 122 and disposing a part of the conductive spring pins in the mounting hole 122, it is convenient for the conductive spring pins to be electrically connected to the external sensor 501 through the mounting hole 122. And through the hermetic abutment between the conductive spring pins and the mounting hole 122, the overall seal of the mounting cavity 21 can also be ensured, avoiding the elastic conductive member 3 inside the mounting cavity 21 from being eroded by external moisture and sweat, thereby ensuring the continuous electrical connection between the circuit board 2 and the external sensor 501.

[0042] In one embodiment, such as Figure 3 and Figure 5As shown, the signal transmission device 100 further includes a conductive terminal 15, and the conductive terminal 15 is sealed in the mounting hole 122 to seal the mounting cavity 21. The conductive terminal 15 is electrically connected to the sensor; the elastic conductive member 3 is limited in the mounting cavity 21, and one end of the elastic conductive member 3 away from abutting against the circuit board 2 is electrically connected to the conductive terminal 15.

[0043] In this embodiment, the conductive terminal 15 is a conductive structure that fits the cross-sectional shape of the mounting hole 122. The conductive terminal 15 forms abutting surfaces at both ends of the mounting hole 122. One abutting surface abuts against the conductive structure of the sensor for electrical conduction, and the other abutting surface abuts against and is electrically connected to the elastic part. The conductive terminal 15 is limited in the mounting hole 122, and the periphery of the conductive terminal 15 is hermetically attached to the hole wall of the mounting hole 122 to seal the mounting hole 122, so that the mounting cavity 21 is formed into a closed space. At the same time, structures such as a bracket, a limiting plate 14 or a through hole are provided in the mounting cavity 21 to limit the elastic conductive member 3, so that the elastic conductive member 3 is limited in the mounting cavity 21, and the elastic conductive member 3 stably abuts against the circuit board 2 and the conductive terminal 15 at the same time.

[0044] It can be understood that by providing the mounting hole 122 on the mounting plate 1, the conductive terminal 15 can be placed, and at the same time, the conductive terminal 15 can also seal the mounting hole 122 so that the mounting cavity 21 forms a closed space. On the basis of completely limiting the elastic conductive member 3 in the mounting cavity 21, the electrical connection between the elastic conductive member 3 and the sensor is realized through the conductive terminal 15, so as to realize the electrical connection between the circuit board 2 and the sensor. Moreover, the elastic conductive member 3 is completely limited in the mounting cavity 21. On the one hand, it can ensure the tightness of the mounting cavity 21 and prevent external water vapor from invading the mounting cavity 21 to corrode the circuit board 2. On the other hand, it can also ensure the fixation of the position of the elastic conductive member 3, thereby ensuring the stability of the electrical connection between the circuit board 2 and the sensor at both ends of the elastic conductive member 3, and avoiding the virtual connection and open circuit that may be caused by the displacement of the elastic conductive member 3 due to vibration during the movement of the user, effectively improving the detection continuity and detection accuracy of the blood glucose meter.

[0045] In one embodiment, as Figure 2 and Figure 3 shown, the signal transmission device 100 further includes a limiting plate 14. The limiting plate 14 is arranged in the mounting cavity 21, and the limiting plate 14 is spaced from the circuit board 2 and the bottom wall of the bottom groove 121; the limiting plate 14 is provided with a limiting hole 141, and the elastic conductive member 3 is limited in the limiting hole 141.

[0046] In this embodiment, the limiting plate 14 has a plate-like, table-like or other structures, and can also be a bracket-like structure. The limiting plate 14 is disposed in the installation cavity 21, such as connected to the cavity wall of the installation cavity 21 or disposed on the bottom wall of the bottom groove 121. The limiting plate 14 is spaced from the circuit board 2 and the bottom wall of the bottom groove 121 at the same time, so as to form a gap between the limiting plate 14 and the circuit board 2 and between the limiting plate 14 and the bottom wall of the bottom groove 121. The elastic conductive member 3 is limitedly disposed in the limiting hole 141 of the limiting plate 14, and a part of the elastic conductive member 3 is in the gap between the limiting plate 14 and the circuit board 2 to abut against the circuit board 2 and conduct electricity, and a part of the elastic conductive member 3 is in the gap between the limiting plate 14 and the bottom wall of the bottom groove 121 to be electrically connected to the sensor or the conductive terminal 15.

[0047] It can be understood that by providing the limiting plate 14, the limiting hole 141 can be formed to limit the elastic conductive member 3, so that the elastic conductive member 3 is limitedly installed in the installation cavity 21, ensuring the accurate position of the elastic conductive member 3 in the installation cavity 21 to maintain the stable electrical connection between the elastic conductive member 3 and the circuit board 2 and the conductive terminal 15. Especially when multiple elastic conductive members 3 correspond to different contacts of the circuit board 2, it ensures the precise abutment of each elastic conductive member 3 with the corresponding contact, avoiding bad phenomena such as short circuit and open circuit caused by the displacement of the elastic conductive member 3; at the same time, by providing the limiting plate 14, on the basis of forming a gap between the limiting plate 14 and the circuit board 2 and the bottom wall of the bottom groove 121, it ensures that the elastic conductive member 3 can protrude uniformly from the plate surface of the limiting plate 14, and at the same time ensures the abutment and electrical connection with the circuit board 2 and the conductive terminal 15, avoiding the open circuit and virtual connection phenomena caused by the irregular deformation of the elastic conductive member 3 resulting in the inability of one end of the elastic conductive member 3 to abut.

[0048] In one embodiment, as Figure 4 shown, the elastic conductive member 3 includes an installation section 31 and an abutting section 32. The installation section 31 is limited in the limiting hole 141; the abutting section 32 is disposed on the installation section 31, and the abutting section 32 is located on both sides of the limiting plate 14 and abuts against the conductive terminal 15 and the circuit board 2.

[0049] It can be understood that the installation section 31 of the elastic conductive member 3 is in a columnar or rod-shaped structure, so that the installation section 31 is limited in the limiting hole 141 of the limiting plate 14. The abutting sections 32 are arranged at both ends of the installation section 31 along the extension direction of its main body. At the same time, the abutting sections 32 located at both ends of the installation section 31 are also located on both sides of the limiting plate 14, so that the abutting section 32 connected to one end of the installation section 31 abuts against the circuit board 2 and is electrically connected to the circuit board 2, and the abutting section 32 connected to the other end of the installation section 31 abuts against the conductive terminal 15 and is electrically connected to the conductive terminal 15. Among them, the elastic conductive member 3 is at least made of an elastic material at the abutting section 32, so as to ensure the close abutment between the circuit board 2 and the elastic conductive member 3 and the close abutment between the elastic conductive member 3 and the conductive terminal 15 through the elastic deformation of the abutting section 32 itself, thereby realizing stable and close electrical conduction between the circuit board 2 and the conductive terminal 15.

[0050] In one embodiment, as Figure 4 shown, the abutting section 32 can be elastically deformed to form a contact surface 321, and the contact surface 321 is in electrical contact with the circuit board 2 and the conductive terminal 15; it can be understood that, based on the elastic conductive member 3 being made of an elastic material, when the abutting section 32 abuts against the circuit board 2, it will deform and form a contact surface 321, so as to be in electrical contact and conduct electricity with the circuit board 2 through the contact surface 321, and be in electrical contact and conduct electricity with the conductive terminal 15 through the contact surface 321. The contact surface 321 is generated by elastic deformation, so that the elastic conductive member 3 has a larger contact surface 321 area compared with the existing conductive structure, thereby making the abutment between the elastic conductive member 3 and the circuit board 2 and the conductive terminal 15 more stable, and avoiding phenomena such as virtual connection and open circuit that may occur due to the displacement of the elastic conductive member 3, effectively improving the detection continuity and detection accuracy of the blood glucose meter.

[0051] Optionally, along the extension direction from the end of the abutting section 32 abutting against the circuit board 2 to the end connected to the installation section 31, its cross-sectional area is gradually increased; optionally, along the extension direction from the end of the abutting section 32 abutting against the conductive terminal 15 to the end connected to the installation section 31, its cross-sectional area is gradually increased. It can be understood that by setting the abutting section 32 to gradually decrease in cross-sectional area from the end connected to the installation section 31 to the end far from the installation section 31, so that the abutting section 32 is in a conical or hemispherical shape, so that after the abutting section 32 undergoes elastic deformation, a contact surface 321 with a larger area will be generated, so as to increase the conductive contact surface 321 between the relevant contacts of the circuit board 2 and the conductive terminal 15, and improve the stability of circuit conduction.

[0052] In one embodiment, as Figures 2 to 4As shown in the figure, the mounting plate 1 includes a plate body 11 and a mounting base 12. The mounting base 12 is provided on the plate body 11, and the mounting base 12 is provided with a bottom groove 121; the circuit board 2 is provided on the plate body 11, and part of the circuit board 2 abuts against the mounting base 12 to seal the notch of the bottom groove 121.

[0053] In this embodiment, the mounting plate 1 includes a plate body 11 and a mounting base 12. The plate body 11 is the main structure of the mounting plate 1, which is in a plate-like structure and has a mounting plane. The mounting base 12 is provided on the mounting plane of the plate body 11. At the same time, the mounting base 12 is provided with the above-mentioned bottom groove 121, and the bottom groove 121 formed by the mounting base 12 extends in a direction perpendicular to the plate surface of the plate body 11.

[0054] Among them, the mounting base 12 protrudes from the surface of the plate body 11, that is, the mounting base 12 itself has a certain height, so that the bottom groove 121 formed by the mounting base 12 has a height perpendicular to the plate surface direction of the plate body 11. At least part of the circuit board 2 abuts against the mounting base 12 and seals the notch of the bottom groove 121. For example, all the circuit boards 2 are provided on the mounting base 12 and seal the notch of the bottom groove 121, or part of the circuit boards 2 are provided on the mounting base 12 and seal the notch of the bottom groove 121. Among them, when part of the circuit board 2 is provided on the mounting base 12 and seals the notch of the bottom groove 121, the extending direction of the plate surface of the circuit board 2 is the same as the extending direction of the plate body 11, so that an installation space is formed between the circuit board 2 and the plate body 11. The installation space can be used to install and place batteries, or can be used to accommodate the components on the circuit board 2, or place other communication connection devices, which is not limited here.

[0055] It can be understood that on the basis of the mounting base 12 supporting and placing the circuit board 2, the circuit board 2 can also seal the bottom groove 121 to form a closed mounting cavity 21. At the same time, by setting the mounting base 12, a mounting cavity 21 with a larger space and a higher protrusion from the plate body 11 can be formed to accommodate the above-mentioned conductive spring pins or elastic parts 32.

[0056] In one embodiment, as Figures 2 to 4 shown, the mounting plate 1 further includes at least two hooks 13. Each hook 13 is provided on the plate body 11 and arranged around the mounting base 12; the circuit board 2 is located between each hook 13 and the mounting base 12, and each hook 13 cooperates with the mounting base 12 to limit and abut against the circuit board 2.

[0057] In this embodiment, at least two hooks 13 are provided around the mounting base 12 on the mounting plate 1. Each hook 13 is provided at the peripheral edge of the end of the circuit board 2. Each hook 13 and one end of the mounting base 12 away from the board body 11 are spaced apart, so as to form a mounting gap between the hook 13 and the seat body of the mounting base 12. The circuit board 2 is limitedly arranged in the mounting gap. At the same time, one side of the circuit board 2 abuts against the mounting base 12, and the other side of the circuit board 2 abuts against each hook 13. And each hook 13 and the mounting base 12 cooperate to tightly press and limit the circuit board 2 at the same time. Taking two hooks 13 as an example, the two hooks 13 are relatively arranged at both sides of one end of the circuit board 2 connected to the elastic conductive member 3. For three hooks 13, the three hooks 13 are arranged around the end of one end of the circuit board 2 connected to the elastic conductive member 3.

[0058] It can be understood that the positions of the hooks 13 are preferably set at the edges where the circuit board 2 abuts against the mounting base 12. By arranging the hooks 13 at the periphery of the mounting base 12, the circuit board 2 can be tightly abutted against the seat body of the mounting base 12. By limiting and installing the circuit board 2 with each hook 13 and the mounting base 12, the position of the circuit board 2 can be fixed, and the installation heights of the elastic conductive members 3 in the installation cavity 21 are the same, so as to ensure that the deformation amounts are the same when each elastic conductive member 3 abuts against the circuit board 2, so as to ensure that the abutting forces of each elastic conductive member 3 are the same, and avoid poor connection caused by virtual connection of some contacts due to different abutting forces.

[0059] In one embodiment, as Figure 4 shown, the hook 13 includes a support portion 131 and a limiting portion 132. The support portion 131 is arranged on the board body 11, and the limiting portion 132 is arranged at one end of the support portion 131 away from the board body 11; at least part of the limiting portion 132 is opposite to and spaced from the mounting base 12, so that the limiting portion 132 and the mounting base 12 cooperate to limit and abut the circuit board 2.

[0060] It can be understood that the support portion 131 is the main support structure of the hook 13. One end of the support portion 131 is arranged on the board body 11, and the other end of the support portion 131 extends along the height direction of the seat body of the mounting base 12. The limiting portion 132 is arranged at one end of the support portion 131 away from the board body 11, and the limiting portion 132 extends upward from the support portion 131 above the seat body of the mounting base 12. The limiting portion 132 is opposite to and spaced from the seat body of the mounting base 12, so that the above-mentioned mounting gap is formed between the limiting portion 132 and the mounting base 12. The circuit board 2 is limitedly installed between the limiting portion 132 and the mounting base 12 to limit the circuit board 2, keep the position of the circuit board 2 fixed, and keep the connection position between the circuit board 2 and the elastic conductive member 3 fixed.

[0061] In one embodiment, as Figure 4As shown in the figure, the hook 13 is provided with a clamping surface 133, and the clamping surface 133 abuts against the circuit board 2; the distance from the clamping surface 133 to the mounting seat 12 is less than the thickness of the circuit board 2, and at least part of the mounting seat 12 is made of an elastic material; it can be understood that the clamping surface 133 is arranged on the side of the hook 13 facing the mounting seat 12, that is, the clamping surface 133 is arranged on the side of the limiting part 132 facing the mounting seat 12. The clamping surface 133 and the mounting seat 12 are arranged at intervals relative to each other, and an installation gap as described above is formed by enclosing between the clamping surface 133 and the mounting seat 12. The clamping surface 133 abuts against the circuit board 2, and at the same time, the distance from the clamping surface 133 to the mounting seat 12 is less than the thickness of the circuit board 2. At the same time, at least part of the mounting seat 12 is made of an elastic material, so that when the circuit board 2 is limited and installed by the clamping surface 133 and the mounting seat 12, the circuit board 2 can squeeze at least part of the mounting seat 12 made of an elastic material, so that the clamping surface 133 tightly abuts against the circuit board 2, keeping the position of the circuit board 2 fixed, and keeping the sealing effect between the circuit board 2 and the mounting seat 12 to ensure the overall airtight effect of the installation cavity 21.

[0062] Optionally, the mounting plate 1 further includes a first sealing ring, and the first sealing ring is arranged on the mounting seat 12 and surrounds the notch of the bottom groove 121, and the circuit board 2 abuts against the first sealing ring; it can be understood that a sealing ring groove is arranged on the side of the mounting seat 12 facing the limiting part 132 of the hook 13 and surrounds the notch of the bottom groove 121. The notch of the sealing ring groove faces the circuit board 2. The first sealing ring is arranged in the sealing ring groove, and part of the first sealing ring extends beyond the notch of the sealing ring groove. The circuit board 2 abuts against the first sealing ring. By arranging the first sealing ring, the sealing performance between the circuit board 2 and the mounting seat 12 is further improved, and the overall airtight effect of the installation cavity 21 is ensured.

[0063] In an embodiment, as Figures 1 to 3 shown, the signal transmission device 100 further includes a face shell 4. The face shell 4 and the mounting plate 1 enclose a receiving cavity 41, and the circuit board 2 is arranged in the receiving cavity 41; a sealing groove 111 is arranged on the periphery of the mounting plate 1, and the periphery of one end of the face shell 4 facing the mounting plate 1 is arranged in the sealing groove 111.

[0064] In this embodiment, the signal transmission device 100 further includes a face shell 4. The face shell 4 is in a thin shell structure. The face shell 4 is arranged on the mounting plate 1, and the face shell 4 and the mounting plate 1 enclose a receiving cavity 41. The circuit board 2, the elastic conductive member 3 and the above-mentioned mounting seat 12 are all arranged in the receiving cavity 41. At the same time, the face shell 4 and the mounting plate 1 are sealed and connected, such as a sealing ring or sealant is arranged at the connection between the face shell 4 and the mounting plate 1.

[0065] Specifically, as Figure 4As shown in the figure, a sealing groove 111 is provided on the periphery of the mounting plate 1. The periphery of one end of the front shell 4 facing the mounting plate 1 is arranged in the sealing groove 111, so that the edge of the shell of the front shell 4 abuts against and fits with the groove wall of the sealing groove 111 to form a sealing structure. Further, a sealing ring can be arranged in the sealing groove 111 to seal the gap between the edge of the shell of the front shell 4 and the groove wall of the sealing groove 111, or sealing glue can be arranged between the edge of the shell of the front shell 4 and the groove wall of the sealing groove 111, which is not limited herein.

[0066] It can be understood that by sealing the connection between the front shell 4 and the mounting plate 1, the sealing performance of the accommodation cavity 41 formed by enclosing the front shell 4 and the mounting plate 1 is effectively improved, preventing moisture, sweat, etc. from invading the accommodation cavity 41 and eroding the internal circuit board 2. At the same time, as the outermost sealing barrier, the front shell 4 and the mounting plate 1 improve the sealing performance between the front shell 4 and the mounting plate 1.

[0067] In one embodiment, as Figure 4 shown, the mounting plate 1 further includes a second sealing ring, and the second sealing ring is arranged in the sealing groove 111; optionally, the sealing groove 111 is provided with sealing glue or a sealing coating.

[0068] Optionally, from the end of the front shell 4 far from the mounting plate 1 to the end connected to the mounting plate 1, the cross-sectional area gradually increases; it can be understood that the cross-sectional area of the front shell 4 gradually changes, and from the end far from the mounting plate 1 to the end connected to the mounting plate 1, the cross-sectional area gradually increases, so that the accommodation cavity 41 formed by enclosing the front shell 4 and the mounting plate 1 has a higher height at the central position, facilitating the placement of the circuit board 2 with more and higher components. At the same time, the gradually changing outer shape of the front shell 4 can also form an arc surface, reducing the sharp corners for the user's convenience.

[0069] The present invention also proposes a blood glucose meter 500, as Figure 6 and Figure 7 shown, the blood glucose meter 500 includes a sensor 501 and the above-mentioned signal transmission device 100, and the sensor 501 is communicatively connected to the signal transmission device 100. For the specific structure of the signal transmission device, refer to the foregoing embodiments. Since the blood glucose meter 500 adopts all the technical solutions of the foregoing embodiments, it at least has all the beneficial effects brought by the technical solutions of the foregoing embodiments, which will not be elaborated herein one by one.

[0070] The above are only exemplary embodiments of the present invention, and do not limit the patent scope of the present invention. Any equivalent structural transformation made under the technical concept of the present invention by using the content of the specification and drawings of the present invention, or directly / indirectly applied in other related technical fields, is included in the patent protection scope of the present invention.

Claims

1. A signal transmission device, the signal transmission device being configured to be electrically connected to a sensor for monitoring blood sugar, characterized in that: The signal transmission device comprises: A mounting plate, wherein the mounting plate is provided with a bottom groove; A circuit board, the circuit board is arranged on the mounting plate, at least a portion of the circuit board seals and covers the notch of the bottom groove, so that the circuit board and the bottom groove are enclosed to form a closed mounting cavity; and An elastic conductive member, at least part of which is arranged in the installation cavity, one end of the elastic conductive member elastically abuts against the circuit board and is electrically connected to the circuit board, and the other end of the elastic conductive member is arranged to be electrically connected to the sensor.

2. The signal transmission device according to claim 1, characterized in that: The mounting plate is provided with a mounting hole, and the mounting hole is connected to the mounting cavity; Part of the elastic conductive member is sealed in the mounting hole to seal the mounting cavity.

3. The signal transmission device according to claim 2, characterized in that: The signal transmission device further comprises a conductive terminal, the conductive terminal is sealed in the mounting hole to seal the mounting cavity, and the conductive terminal is electrically connected to the sensor; The elastic conductive member is limitedly disposed in the installation cavity, and one end of the elastic conductive member away from abutting against the circuit board is electrically connected to the conductive terminal.

4. The signal transmission device according to claim 3, characterized in that: The signal transmission device further comprises a limit plate, which is arranged in the installation cavity, and the limit plate is spaced apart from the circuit board and the bottom wall of the bottom groove; The limiting plate is provided with a limiting hole, and the elastic conductive member is limited in the limiting hole.

5. The signal transmission device according to claim 4, characterized in that: The elastic conductive member comprises a mounting section and an abutting section, and the mounting section is limited to the limiting hole; The abutting section is arranged on the installation section, and the abutting section is located on both sides of the limiting plate and abuts against the conductive terminal and the circuit board.

6. The signal transmission device according to claim 5, characterized in that: The abutment section can be elastically deformed to form a contact surface, and the contact surface is electrically abutted against the circuit board and the conductive terminal; And / or, the cross-sectional area of ​​the abutting section is gradually increased along the extending direction from the end abutting against the circuit board to the end connected to the mounting section; And / or, the cross-sectional area of ​​the abutting section is gradually increased along the extending direction from one end abutting against the conductive terminal to one end connected to the mounting section.

7. The signal transmission device according to any one of claims 1 to 6, characterized in that: The elastic conductive member comprises an elastic matrix and a conductive filler, wherein the conductive filler is distributed in the elastic matrix; The elastic base can be elastically deformed to elastically abut against the circuit board and the sensor.

8. The signal transmission device according to any one of claims 1 to 6, characterized in that: The mounting plate comprises a plate body and a mounting seat, wherein the mounting seat is arranged on the plate body, and the mounting seat is provided with the bottom groove; The circuit board is arranged on the plate body, and a part of the circuit board abuts against the mounting seat to seal and cover the notch of the bottom groove.

9. The signal transmission device according to claim 8, characterized in that: The mounting plate further comprises at least two hooks, each of which is disposed on the plate body and around the mounting seat; The circuit board is located between each of the hooks and the mounting seat, and each of the hooks cooperates with the mounting seat to limit and abut against the circuit board.

10. The signal transmission device according to claim 9, characterized in that: The hook comprises a supporting portion and a limiting portion, wherein the supporting portion is arranged on the plate body, and the limiting portion is arranged at one end of the supporting portion away from the plate body; At least part of the limiting portion is opposite to the mounting seat and is spaced apart from each other, so that the limiting portion and the mounting seat cooperate to limit and abut against the circuit board.

11. The signal transmission device according to claim 9, characterized in that: The hook is provided with a clamping surface, and the clamping surface abuts against the circuit board; The distance between the clamping surface and the mounting seat is smaller than the thickness of the circuit board, and at least part of the mounting seat is made of elastic material; And / or, the mounting plate further comprises a first sealing ring, the first sealing ring is arranged on the mounting seat and surrounds the notch of the bottom groove, and the circuit board abuts against the first sealing ring.

12. The signal transmission device according to any one of claims 1 to 6, characterized in that: The signal transmission device further comprises a face shell, wherein the face shell and the mounting plate are enclosed to form a receiving cavity, and the circuit board is arranged in the receiving cavity; A sealing groove is arranged on the periphery of the mounting plate, and the periphery of the face shell facing one end of the mounting plate is arranged in the sealing groove.

13. The signal transmission device according to claim 12, characterized in that: The mounting plate further comprises a second sealing ring, wherein the second sealing ring is arranged in the sealing groove; And / or, the sealing groove is provided with a sealant or a sealing coating; And / or, the cross-sectional area of ​​the face shell is gradually increased from an end away from the mounting plate to an end connected to the mounting plate.

14. A blood glucose detector, characterized in that: The blood glucose detector comprises: The signal transmission device as claimed in claims 1 to 13; and A sensor is communicatively connected to the signal transmission device.

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