A CGM sensor connector

Abstract

This utility model relates to the field of connector technology, and more particularly to a CGM sensor connector, comprising a circuit board and a plastic component disposed on top of the circuit board. The plastic component has two parallel receiving holes, slots perpendicularly distributed to the receiving holes and opening upwards, and mounting grooves disposed on both sides of the bottom of the receiving holes. S-shaped terminals are inserted into the mounting grooves. Each terminal includes an abutment portion extending into the receiving hole and a solder portion conforming to the bottom surface of the plastic component. The solder portion is soldered and fixed to the circuit board, and the abutment portion passes through the receiving hole and extends into the slot. This application, by setting up a plastic component and providing slots on the bottom surface of the plastic component, allows the terminals to be inserted into the slots from bottom to top. The solder portion is placed on the bottom surface of the plastic component and soldered and fixed to the circuit board. The terminals are arranged opposite each other and symmetrically distributed on both sides of the receiving holes, effectively reducing the overall size of the connector and improving terminal performance, which is beneficial to the trend of connector miniaturization.

Description

Technical Field

[0001] This utility model relates to the field of connector technology, and in particular to a CGM sensor connector. Background Technology

[0002] The connector is a core component of a continuous glucose monitoring system, responsible for establishing a stable and reliable electrical signal or data transmission channel between the sensor, transmitter, and receiver.

[0003] Currently, most connectors on the market are designed with multi-terminal structures, with multiple terminals arranged opposite each other and distributed in an alternating manner. For example, in the Chinese utility model patent for an electronic connector and a sensor connection structure for a blood glucose meter (application number: 202420039334.9), the connection terminals are distributed in an alternating manner in the plastic shell, resulting in a large connector size, which is not conducive to the development of the miniaturization trend. Utility Model Content

[0004] The purpose of this utility model is to provide a CGM sensor connector that addresses the shortcomings of the existing technology mentioned above. It aims to solve the technical problem that the multiple terminals of most connectors on the market are relatively staggered, resulting in a large connector size, which is not conducive to the development of miniaturization.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a CGM sensor connector, including a circuit board and a plastic part disposed on the top of the circuit board. The plastic part is provided with two parallel receiving holes, slots that are perpendicular to the receiving holes and open upwards, and mounting grooves disposed on both sides of the bottom of the receiving holes. An S-shaped terminal is inserted into the mounting groove. The terminal includes an abutting part that extends into the receiving hole and a welding part that is attached to the bottom surface of the plastic part. The welding part is welded and fixed to the circuit board, and the abutting part passes through the receiving hole and extends into the slot.

[0006] Furthermore, the circuit board is provided with positioning holes, and the bottom surface of the plastic part is provided with positioning posts, which correspond to the positioning holes.

[0007] Furthermore, the circuit board is provided with a soldering area, and the soldered parts are fixedly connected to the soldering area.

[0008] Furthermore, the plastic part is also provided with two grooves that are symmetrically distributed outside the mounting groove, and a protrusion placed between the two grooves. The receiving hole, the groove and the mounting groove are connected.

[0009] Furthermore, both the slot and the groove have an inwardly inclined first slope on the side facing the receiving hole.

[0010] Furthermore, the bottom surface of the protruding column is provided with a second inclined surface that slopes inward.

[0011] Furthermore, the plastic part is also provided with a clearance groove located outside the groove and the protrusion, and the abutting part is placed inside the clearance groove.

[0012] Furthermore, the terminal also includes an elastic part connected to the abutment part and a plug-in part connected to the elastic part. The plug-in part is inserted into the slot and is adapted to it. The elastic part is accommodated in the receiving hole. The plug-in part is perpendicularly connected to the soldering part.

[0013] Furthermore, the bent end of the abutment portion extends upward and outward.

[0014] Compared with the prior art, the beneficial effects of this application are as follows: By setting a plastic part and setting a slot on the bottom surface of the plastic part, the terminal is inserted into the slot from bottom to top. The welding part is placed on the bottom surface of the plastic part and welded to the circuit board. The terminals are arranged opposite each other and symmetrically distributed on both sides of the receiving hole, which effectively reduces the size of the connector and the terminal performance is better, which is conducive to the development of the connector miniaturization trend. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0016] Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 This is a schematic diagram of the assembly structure of the plastic parts and terminals in this utility model; Figure 3 This is a schematic diagram of the circuit board structure in this utility model; Figure 4 This is one of the structural schematic diagrams of the plastic part in this utility model; Figure 5 This is the second structural schematic diagram of the plastic part in this utility model; Figure 6 This is a schematic diagram of the terminal structure in this utility model.

[0017] The details of the reference numerals used in the above figures are as follows: 1-Circuit board, 11-Positioning hole, 12-Soldering area; 2-Plastic part, 21-Accommodation hole, 22-Slot, 23-Mounting groove, 24-Positioning post, 25-Groove, 26-Protruding post, 27-First inclined surface, 28-Second inclined surface, 29-Allowing groove; 3-Terminal, 31-Abutting part, 32-Elastic part, 33-Plug-in part, 34-Soldering part; 4-Sensors. Detailed Implementation

[0018] In the description of this application, the term "several" refers to two or more (including two). Technical terms such as "first," "second," etc., are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the quantity, specific order, or primary / secondary relationship of the indicated technical features. Terms such as "installation," "connection," and "linking" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "linking" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0019] In the description of this application, the technical terms "upper", "lower", "front", "rear", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0020] In order to better understand the above-mentioned objectives, technical solutions and advantages of this application, the technical solutions of this application will be clearly and completely described below with reference to the accompanying drawings, and to understand in detail how to solve the problems raised in the background art.

[0021] like Figures 1 to 6 As shown, a CGM sensor connector includes a circuit board 1 and a plastic part 2 disposed above the circuit board 1. The plastic part 2 is provided with two parallel receiving holes 21, slots 22 that are perpendicular to the receiving holes 21 and open upwards, and mounting grooves 23 disposed on both sides of the bottom of the receiving holes 21. An S-shaped terminal 3 is inserted into the mounting groove 23. The terminal 3 includes an abutment portion 31 that extends into the receiving hole 21 and a solder portion 34 that is attached to the bottom surface of the plastic part 2. The solder portion 34 is soldered and fixed to the circuit board 1, and the abutment portion 31 passes through the receiving hole 21 and extends into the slot 22.

[0022] With the above solution, the bottom surface of the plastic part 2 is provided with a slot 22, so that the terminal 3 is inserted into the slot 22 from bottom to top. The welding part 34 is placed on the bottom surface of the plastic part 2 and is welded and fixed to the circuit board 1. The terminals 3 are arranged opposite each other and symmetrically distributed on both sides of the receiving hole 21, which effectively reduces the external size of the connector, effectively saves the installation space of the connector, and makes the entire connector structure more compact, easier to produce and assemble. In addition, the terminal 3 has good performance, which is conducive to the development of the miniaturization trend.

[0023] In this embodiment, two receiving holes 21 are spaced apart and penetrate the plastic part 2. The slot 22 and the mounting groove 23 are respectively provided on the top and bottom surfaces of the plastic part 2, so that the terminal 3 can be inserted into the plastic part 2 upside down. There are 4 terminals 3. The welding part 34 and the circuit board 1 are welded and fixed by surface mount technology to ensure the stability of the connection between the circuit board 1 and the plastic part 2 through the terminals 3.

[0024] like Figure 1 , Figure 3 and Figure 5 As shown, in one specific embodiment of the improvement, the circuit board 1 is provided with a positioning hole 11, and the bottom surface of the plastic part 2 is provided with a positioning post 24, which corresponds to the positioning hole 11.

[0025] Specifically, both the positioning hole 11 and the positioning post 24 are cylindrical and are compatible with each other. During actual installation, the positioning post 24 is inserted into the positioning hole 11 to ensure the accurate installation of the plastic part 2 and the circuit board 1, avoid the plastic part 2 from shifting, and improve the assembly efficiency of the connector.

[0026] like Figures 1 to 3 As shown, in one specific embodiment of the improvement, the circuit board 1 is provided with a soldering area 12, and the soldering part 34 is attached to the soldering area 12 for fixed connection.

[0027] Specifically, the area of ​​the welding area 12 is larger than the area of ​​the welding part 34. The welding area 12 is placed on both sides of the positioning hole 11. The number of welding areas 12 is the same as the number of welding parts 34. By inserting the positioning post 24 into the positioning hole 11, the welding part 34 can be accurately fitted to the welding area 12 for welding, thereby improving the stability and firmness of the electrical connection and ensuring the stable transmission of electrical signals.

[0028] like Figure 2 and Figure 5 As shown, in one specific embodiment of the improvement, the plastic part 2 is also provided with two grooves 25 that are symmetrically distributed outside the mounting groove 23 and a protrusion 26 that is placed between the two grooves 25. The receiving hole 21, the grooves 25 and the mounting groove 23 are connected.

[0029] Specifically, the groove 25 and the mounting groove 23 have the same depth, and the width of the protrusion is the same as the width of the groove 25. When the insertion part 33 of the terminal 3 is inserted into the mounting groove 23, the outer side of the insertion part 33 of the protrusion abuts against it. However, when the plastic part 2 is injection molded, due to the small size of the connector, the mounting groove 23 of the insertion terminal 3 also becomes smaller. For example, the actual thickness of the terminal 3 is in the range of 0.06mm-0.12mm. In this way, the strength of the insert part forming the mounting groove 23 in the mold during injection molding will also be relatively weak. Therefore, the groove 25 is opened on the side of the mounting groove 23 of the plastic part 2 to form a reinforcing structure similar to a rib, which ensures the structural strength of the plastic part 2 during molding and avoids deformation of the mounting groove 23, which would make it difficult or impossible to insert the terminal 3. The protrusion 26 can also prevent the terminal 3 from shifting when it is inserted.

[0030] like Figure 2 and Figure 5 As shown, in one specific embodiment of the improvement, both the slot 22 and the groove 25 have an inwardly inclined first slope 27 on the side facing the receiving hole 21.

[0031] Specifically, based on the insertion of the plug part 33 into the mounting slot 23, the top of the plug part 33 has a bent elastic part 32 connected to it. When the terminal 3 is actually installed, the plug part 33 fits against the protrusion 26, and the elastic part 32 enters the receiving hole 21 from bottom to top. The design of the first inclined surface 27 can avoid scratching or blocking the elastic part 32 and the plug part 33, ensuring the firmness and smoothness of the terminal 3 insertion.

[0032] like Figure 2 and Figure 5 As shown, in one specific embodiment of the improvement, the bottom surface of the protruding post 26 is provided with a second inclined surface 28 that is inclined inward.

[0033] Specifically, based on the fact that the welding part 34 is bent relative to the insertion part 33, when the welding part 34 is attached to the bottom surface of the plastic part 2, the design of the second inclined surface 28 can prevent the protrusion 26 from scratching or blocking the welding part 34, further ensuring the firmness and smoothness of the terminal 3 insertion. At the same time, the second inclined surface 28 can guide the insertion part 33 to enter the mounting groove 23 more easily, reducing resistance and friction during the assembly process.

[0034] like Figure 2 and Figure 5 As shown, in one specific embodiment of the improvement, the plastic part 2 is also provided with a relief groove 29 located outside the groove 25 and the protrusion 26, and the abutment part 31 is placed in the relief groove 29.

[0035] Specifically, the clearance groove 29 extends to the side of the plastic part 2. The depth of the clearance groove 29 is less than the thickness of the welding part 34, and the area of ​​the clearance groove 29 is greater than the area of ​​the welding part 34, so that the welding part 34 protrudes from the bottom surface of the plastic part 2. During surface mount soldering, the clearance groove 29 can prevent solder from overflowing and can also form solder creep on the side of the welding part 34, improving the welding quality and firmness.

[0036] like Figure 2 and Figure 6 As shown, in one specific embodiment of the improvement, the terminal 3 further includes an elastic part 32 connected to the abutment part 31 and a plug part 33 connected to the elastic part 32. The plug part 33 is inserted into the slot 22 and is adapted to it. The elastic part 32 is accommodated in the receiving hole 21. The plug part 33 is perpendicularly connected to the welding part 34.

[0037] Specifically, the width of the receiving hole 21 is greater than the width of the elastic part 32 to avoid collision between the terminal 3 and the plastic part 2. The two sides of the plug part 33 are provided with several inverted hook structures. The upper side of the hook is provided with an arc surface. During installation, the arc surface can facilitate the insertion of the plug part 33 into the mounting groove 23. The hook structure can increase the friction with the plastic part 2, preventing the terminal 3 from loosening or falling off when the connector is subjected to external impact or vibration. It can maintain good stability after installation and effectively extend the service life of the equipment.

[0038] like Figure 1 As shown, in one specific embodiment of the improvement, the bent end of the contact portion 31 is provided to extend upward and outward.

[0039] Specifically, the sensor 4 is inserted into the slot 22 from top to bottom, with the bent end of the abutment 31 facing outwards and the two terminals 3 symmetrically arranged so that the two abutment 31 are also opposite and close to each other. After the sensor 4 is inserted into the slot 22, it can be accurately aligned and locked in place, ensuring a stable connection between the sensor 4 and the connector, and preventing the sensor 4 from loosening or falling off during operation.

[0040] Finally, it should be noted that the above description is only a preferred embodiment of this utility model, and the protection scope of this utility model is not limited to the above embodiments. All technical solutions within the scope of this utility model's concept are within the protection scope of this utility model. It should be pointed out that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A CGM sensor connector, characterized in that, The device includes a circuit board (1) and a plastic part (2) disposed above the circuit board (1). The plastic part (2) is provided with two parallel receiving holes (21), slots (22) that are perpendicular to the receiving holes (21) and open upwards, and mounting grooves (23) disposed on both sides of the bottom of the receiving holes (21). An S-shaped terminal (3) is inserted into the mounting groove (23). The terminal (3) includes an abutting part (31) that extends into the receiving hole (21) and a welding part (34) that fits against the bottom surface of the plastic part (2). The welding part (34) is welded and fixed to the circuit board (1). The abutting part (31) passes through the receiving hole (21) and extends into the slot (22).

2. The CGM sensor connector according to claim 1, characterized in that, The circuit board (1) is provided with a positioning hole (11), and the bottom surface of the plastic part (2) is provided with a positioning post (24), which corresponds to the positioning hole (11).

3. A CGM sensor connector according to claim 2, characterized in that, The circuit board (1) is provided with a soldering area (12), and the soldering part (34) is fixedly connected to the soldering area (12).

4. A CGM sensor connector according to claim 1, characterized in that, The plastic part (2) is also provided with two grooves (25) located outside the mounting groove (23) and symmetrically distributed, and a protrusion (26) located between the two grooves (25). The receiving hole (21), the grooves (25) and the mounting groove (23) are connected.

5. A CGM sensor connector according to claim 4, characterized in that, Both the slot (22) and the groove (25) have an inwardly inclined first slope (27) on the side of their top surfaces facing the receiving hole (21).

6. A CGM sensor connector according to claim 4, characterized in that, The bottom surface of the protruding post (26) is provided with a second inclined surface (28) that is inclined inward.

7. A CGM sensor connector according to claim 4, characterized in that, The plastic part (2) is also provided with a relief groove (29) located outside the groove (25) and the protrusion (26), and the abutting part (31) is located in the relief groove (29).

8. A CGM sensor connector according to claim 1, characterized in that, The terminal (3) further includes an elastic part (32) connected to the abutment part (31) and a plug part (33) connected to the elastic part (32). The plug part (33) is inserted into the slot (22) and is adapted to it. The elastic part (32) is accommodated in the receiving hole (21). The plug part (33) is perpendicularly connected to the welding part (34).

9. A CGM sensor connector according to claim 8, characterized in that, The bent end of the abutment portion (31) extends upward and outward.

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