Battery fixing structure and thermometer

Abstract

The utility model relates to electronic clinical thermometer technical field discloses a battery fixed structure and clinical thermometer, including shell, support, PCB board, positive spring piece, negative spring piece and back cover, the battery of PCB board is assembled on the support and makes the battery of PCB board on the card position and projects to the outside of support, the positive spring piece is from the first surface electricity connection of battery card position to the positive pole of PCB board, the negative spring piece is from the second surface electricity connection of battery card position to the negative pole of PCB board, and the common assembly is into the assembly opening of shell from the end away from battery card position, the battery circumferential side wall is embraced by the battery card position through PCB board, and the assembly channel that the battery is loaded along the radial direction is formed in battery outside through the enclosure of PCB board, support, positive spring piece and negative spring piece, the first clamping wall of battery first side is formed by the superposition of PCB board and support, the back cover is buckled on the assembly opening of shell and constitutes the second clamping wall of battery second side, and the first clamping wall and the second clamping wall are opposite arrangement.

Description

Technical Field

[0001] This utility model relates to the field of electronic thermometer technology, and in particular, to a battery fixing structure and a thermometer. Background Technology

[0002] Electronic thermometers, a common medical measuring device, typically consist of a temperature probe, a temperature sensor, an LCD display, a dedicated integrated circuit, a button battery, and other electronic components. Compared to traditional mercury thermometers, electronic thermometers offer advantages such as faster measurement, more intuitive readings, higher accuracy, memory functionality, and alerts. They also do not contain toxic mercury, making them safer and more environmentally friendly, and are widely used in homes and medical settings.

[0003] Button batteries, due to their small size and low self-discharge rate, are commonly used in low-power devices such as electronic thermometers. Currently, there are two main methods for installing button batteries: one is to press the battery vertically into the mounting position, and the other is to slide it radially into the mounting position. To prevent the battery from loosening or falling out after installation, additional locking structures are usually required along the axial or radial direction of the battery. These locking components not only increase the complexity of the structure but also make the assembly and disassembly of the battery compartment more cumbersome, impacting both production efficiency and user experience.

[0004] Therefore, existing technologies suffer from the following problems: complex battery mounting structures, numerous assembly steps, inconvenient disassembly, and the locking design easily leads to redundancy in the overall structure, increasing costs. There is an urgent need for a battery fixing solution that simplifies the structure, facilitates battery installation and replacement, and effectively prevents battery loosening. Utility Model Content

[0005] This utility model provides a battery fixing structure and a thermometer, which has a simple structure, simple disassembly and assembly method, and high stability after assembly, so as to solve the technical problems of complex battery installation structure, multiple disassembly and assembly steps, and easy loosening of batteries in existing electronic thermometers.

[0006] According to one aspect of the present invention, a battery fixing structure is provided, including a shell, a bracket, a PCB board, a positive electrode spring, a negative electrode spring, and a rear cover. The shell has an assembly opening. The PCB board is mounted on the bracket, with the battery holder on the PCB board extending out of the bracket. The positive electrode spring is electrically connected from a first surface of the battery holder to the positive electrode of the PCB board, and the negative electrode spring is electrically connected from a second surface of the battery holder to the negative electrode of the PCB board. Both springs are assembled into the assembly opening of the shell from the end away from the battery holder. The PCB board is clamped to the circumferential side wall of the battery by the battery holder. The PCB board, bracket, positive electrode spring, and negative electrode spring surround the battery and form an assembly channel for radial insertion of the battery. The PCB board and the bracket are stacked to form a first clamping wall on the first side of the battery. The rear cover is fastened to the assembly opening of the shell and forms a second clamping wall on the second side of the battery. The first clamping wall and the second clamping wall are arranged opposite to each other.

[0007] Furthermore, the battery holder includes a U-shaped groove, which is arranged facing the back cover; a positive connection point and a negative connection point are provided on both sides of the U-shaped groove, and the positive connection points on both sides of the U-shaped groove and the negative connection points on both sides of the U-shaped groove are arranged in a cross pattern.

[0008] Furthermore, the positive electrode spring includes a positive electrode substrate, a positive electrode sheet, a positive electrode end face positioning piece, and a positive electrode side positioning piece; two positive electrode sheets are symmetrically distributed on both sides of the positive electrode substrate and electrically connected to the corresponding positive electrode connection points respectively; the positive electrode end face positioning piece is arranged on the positive electrode substrate and inclined towards the battery assembly position; the positive electrode side positioning piece is arranged on the side of the positive electrode substrate and towards the PCB board, and is used to work with the PCB board and the bracket to laterally push and limit the battery and protect the end of the PCB board.

[0009] Furthermore, the negative electrode spring includes a negative electrode substrate and two negative electrode pieces. The two negative electrode pieces are arranged laterally on the negative electrode substrate and are arranged in a rotationally symmetrical manner. The two negative electrode pieces are electrically connected to the corresponding negative electrode connection points.

[0010] Furthermore, the bottom of the inner cavity of the back cover is provided with reinforcing ribs, and the reinforcing ribs are arranged opposite to the overlapping end face of the PCB board and the bracket.

[0011] Furthermore, the assembly channel is located within the inner cavity of the outer shell, and the assembly channel and the outer shell form a double-layered overlapping channel.

[0012] Furthermore, the casing has a notch on the mounting port to facilitate inserting or removing the battery by hand.

[0013] Furthermore, the PCB board is connected to the bracket at multiple points and is then assembled into the housing.

[0014] Furthermore, the opening edge of the back cover is arc-shaped, and the inner wall surface of the back cover is provided with an annular groove arranged in a circumferential direction; the outer peripheral wall of the assembly opening of the outer shell has a fitting part that matches the shape of the back cover, and the outer peripheral wall of the fitting part is provided with annular ribs arranged in a ring for matching and fastening with the annular groove; the arc-shaped edge of the back cover and the outer shell abut against each other, and the fastening of the annular groove and the annular ribs, thereby realizing the anti-reverse and anti-detachment function after the back cover is closed on the assembly opening.

[0015] According to another aspect of the present invention, a thermometer is also provided, including the aforementioned battery fixing structure.

[0016] This utility model has the following beneficial effects: 1. Achieving radial mounting and stable clamping of the battery: The PCB board, bracket, positive electrode spring, and negative electrode spring together form a radial assembly channel for the battery, allowing the button battery to slide directly into the mounting position from the side, simplifying the installation process. After installation, the battery clamp on the PCB board is held in place by the circumferential sidewall of the battery, and is elastically clamped by the upper and lower positive electrode springs. The first clamping wall formed by the stacked PCB board and bracket cooperates with the second clamping wall formed by the back cover to clamp and fix the battery from both sides. The radial constraint effectively restricts the movement of the battery in the mounting plane, preventing it from loosening due to shaking or vibration.

[0017] 2. Simplified structure, eliminating the need for independent locking components: The battery positioning and locking functions are achieved by utilizing the existing PCB board, bracket, and back cover in the equipment. There is no need to design and use additional fasteners such as independent latches and claws, which simplifies the overall mechanical structure, reduces the number of parts, and lowers the complexity of the mold and production costs.

[0018] 3. Optimized assembly process for easier production and maintenance: The battery can be installed by sliding it in radially, without the need for vertical pressing or complicated unlocking / locking operations; during disassembly, simply open the back cover and the battery can be removed radially; this simplifies the final battery assembly process on the production line and greatly facilitates future battery replacement for users, improving product maintainability and user experience.

[0019] 4. Ensure the reliability of electrical connections: Based on the multi-directional clamping and holding of the battery, the positive and negative electrode springs establish electrical connections with the PCB board from the two surfaces of the battery holder, respectively. This ensures that the springs maintain stable and continuous contact pressure with the battery electrodes during the radial insertion of the battery, guaranteeing the reliability and stability of the electrical connections and avoiding equipment failure due to poor contact.

[0020] In addition to the objectives, features, and advantages described above, this utility model has other objectives, features, and advantages. The present utility model will now be described in further detail with reference to the figures. Attached Figure Description

[0021] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings: Figure 1 This is a schematic diagram of the battery fixing structure according to a preferred embodiment of the present invention; Figure 2 This is a schematic diagram of the PCB board structure according to a preferred embodiment of the present invention; Figure 3 This is a schematic diagram of the structure of the positive electrode spring sheet according to a preferred embodiment of the present invention; Figure 4 This is a schematic diagram of the structure of the negative electrode spring sheet according to a preferred embodiment of the present invention; Figure 5 This is a schematic diagram of the structure of the back cover of a preferred embodiment of the present invention.

[0022] Legend: 100. Outer casing; 101. Notch; 200. Bracket; 300. PCB board; 301. U-shaped groove; 302. Positive connection point; 303. Negative connection point; 400. Positive electrode spring; 401. Positive electrode substrate; 402. Positive electrode sheet; 403. Positive electrode end face positioning piece; 404. Positive electrode side positioning piece; 500. Negative electrode spring; 501. Negative electrode substrate; 502. Negative electrode sheet; 600. Back cover; 601. Reinforcing rib; 700. Battery. Detailed Implementation

[0023] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, the present invention can be implemented in many different ways as defined and covered below.

[0024] like Figure 1 and Figure 2As shown, the battery fixing structure of this embodiment includes a housing 100, a bracket 200, a PCB board 300, a positive electrode spring 400, a negative electrode spring 500, and a back cover 600. The housing 100 has an assembly opening. The PCB board 300 is mounted on the bracket 200, with the battery holder on the PCB board 300 extending beyond the bracket 200. The positive electrode spring 400 is electrically connected from the first surface of the battery holder to the positive electrode of the PCB board 300, and the negative electrode spring 500 is electrically connected from the second surface of the battery holder to the negative electrode of the PCB board 300, and both are connected from the side away from the battery. One end of the clamp is fitted into the assembly port of the outer casing 100; the PCB board 300 is clamped to the circumferential side wall of the battery 700 by the battery clamp, and the PCB board 300, the bracket 200, the positive electrode spring 400 and the negative electrode spring 500 surround the battery and form an assembly channel for the battery 700 to be installed radially; the PCB board 300 and the bracket 200 are stacked to form the first clamping wall on the first side of the battery 700, and the rear cover 600 is fastened to the assembly port of the outer casing 100 and forms the second clamping wall on the second side of the battery 700. The first clamping wall and the second clamping wall are arranged opposite to each other. This utility model's battery fixing structure uses a PCB board 300, a bracket 200, a positive electrode spring 400, and a negative electrode spring 500 to form a radial assembly channel for the battery 700. This allows the button battery (battery 700) to slide directly into the installation position from the side, simplifying the installation process. After installation, the battery clamp on the PCB board 300 is held against the circumferential sidewall of the battery 700 by the elastic clamping of the positive electrode spring 400 and the negative electrode spring 500. The first clamping wall formed by the overlapping of the PCB board 300 and the bracket 200 cooperates with the second clamping wall formed by the back cover 600 to clamp and fix the battery 700 from both sides. The radial constraint effectively restricts the movement of the battery 700 within the installation plane, preventing it from loosening due to shaking or vibration. The positioning and locking functions of the battery 700 are achieved by utilizing the inherent components of the PCB board 300, bracket 200, and rear cover 600 within the equipment. This eliminates the need for separate fasteners such as latches and claws, simplifying the overall mechanical structure, reducing the number of parts, and lowering mold complexity and production costs. The battery 700 can be installed simply by sliding radially in, without vertical pressing or complex unlocking / locking operations. For disassembly, the battery 700 can be removed radially simply by opening the rear cover 600. This simplifies the final battery 700 assembly process on the production line and greatly facilitates future battery replacement for users, improving product maintainability and user experience. Based on the multi-directional clamping and holding of the battery 700, the positive electrode spring 400 and negative electrode spring 500 establish electrical connections with the PCB board 300 from the two surfaces of the battery holder. This ensures that the springs maintain stable and continuous contact pressure with the battery electrodes during the radial insertion of the battery 700, guaranteeing the reliability and stability of the electrical connection and preventing equipment failure due to poor contact.This utility model's battery fixing structure, through a clever component layout, utilizes the existing components of the equipment to form a radial assembly channel and bidirectional clamping constraint for the button battery (battery 700). Thus, without the need for additional locking components, it simultaneously achieves easy installation and disassembly of the battery 700, reliable mechanical fixing, and stable electrical connection, effectively solving the problems of complex battery 700 installation structure, cumbersome operation, and easy loosening in the prior art.

[0025] like Figure 1 and Figure 2 As shown, in this embodiment, the battery slot includes a U-shaped groove 301, which is arranged in the direction of the rear cover 600. A positive terminal connection point 302 and a negative terminal connection point 303 are provided on both sides of the U-shaped groove 301. The positive terminal connection points 302 and the negative terminal connection points 303 on both sides of the U-shaped groove 301 are arranged in a cross pattern. The structure of the U-shaped groove 301 allows it to naturally accommodate and hold the cylindrical circumferential sidewall of the battery 700. The positive electrode connection points 302 and negative electrode connection points 303, which are arranged in a crisscross pattern on both sides, can provide multi-point contact and constraint from different directions around the circumference of the battery 700 after the battery 700 is installed. Together with the arc-shaped structure of the U-shaped groove 301, they form a more uniform and stable radial clamping force on the battery 700, effectively preventing the battery 700 from rotating or moving radially within the slot, thus improving the reliability of the fixation. After frequent installation and removal of the battery 700, the resulting forces are offset by the positive electrode springs 400 and negative electrode springs 500, which are crisscrossed and connected in opposite directions on the battery slot. This helps to evenly distribute the forces and improve the service life of the structure. Arranging the positive terminal connection point 302 and the negative terminal connection point 303 on opposite sides of the U-shaped groove 301, rather than on the same side, allows for more efficient use of the space on the PCB board 300 to form the assembly position of the battery 700. This helps balance wiring density, avoids excessive concentration of lines, and may leave more space for other components or traces, thus contributing to the miniaturization of the PCB board 300 and even the entire product. The U-shaped groove 301, combined with the positive terminal connection point 302 and the negative terminal connection point 303 arranged crosswise on both sides, works together to achieve more effective mechanical clamping and positioning of the battery 700. At the same time, the specific layout of the connection points achieves force cancellation and uniform transmission and dispersion functions, and helps optimize the layout of the PCB board 300.

[0026] like Figure 1 and Figure 3As shown, in this embodiment, the positive electrode spring 400 includes a positive electrode substrate 401, a positive electrode sheet 402, a positive electrode end face positioning piece 403, and a positive electrode side positioning piece 404. The two positive electrode sheets 402 are symmetrically distributed on both sides of the positive electrode substrate 401 and are electrically connected to the corresponding positive electrode connection points 302. The positive electrode end face positioning piece 403 is arranged on the positive electrode substrate 401 and is inclined towards the battery assembly position. The positive electrode side positioning piece 404 is arranged on the side of the positive electrode substrate 401 and is arranged towards the PCB board 300, and is used to cooperate with the PCB board 300 and the bracket 200 to laterally push and limit the battery 700 and protect the end of the PCB board 300. Two positive electrode plates 402 symmetrically distributed on both sides of the positive electrode substrate 401 can establish electrical connections with the corresponding positive electrode connection points 302 on both sides of the U-shaped groove 301 on the PCB board 300. This symmetrical dual-point connection structure, compared to a single-point connection, provides a redundant path for current transmission, reducing the risk of the entire circuit being open due to the failure of a single contact point, and significantly improving the stability and reliability of the electrical connection. The positive electrode positioning piece 403, inclined towards the battery assembly position, undergoes elastic deformation after the battery 700 is installed. Through its continuous elastic recovery force, it presses firmly against the positive electrode surface of the battery 700, ensuring tight physical contact between the positive electrode positioning piece 403 and the battery 700 electrode, reducing contact resistance, and ensuring conductivity. Another... On the other hand, the positive electrode side positioning piece 403 also applies an axial clamping force to the battery 700, helping to keep the battery 700 stably in the installation position and preventing it from loosening axially. The positive electrode side positioning piece 404, which is arranged towards the PCB board 300, works in conjunction with the PCB board 300 and the bracket 200 to push and limit the installed battery 700 from the side, enhancing the radial constraint on the battery 700 and further preventing the battery 700 from shaking or shifting in the slot. At the same time, the positive electrode side positioning piece 404 also protects the end of the PCB board 300, which can prevent the battery 700 from being directly damaged by accidental impact or squeezing during installation or use, thus improving the overall robustness and durability of the structure.

[0027] like Figure 1 and Figure 4As shown, in this embodiment, the negative electrode spring 500 includes a negative electrode substrate 501 and two negative electrode pieces 502. The two negative electrode pieces 502 are arranged laterally on the negative electrode substrate 501 in a rotationally symmetrical manner, and are electrically connected to corresponding negative electrode connection points 303. The two negative electrode pieces 502 are arranged laterally on the negative electrode substrate 501 in a rotationally symmetrical manner, and can simultaneously establish electrical connections with the corresponding negative electrode connection points 303 on both sides of the U-shaped groove 301 on the PCB board 300. This dual-point connection mode, in conjunction with the positive electrode spring 400, provides a bidirectional current path for the battery 700, effectively avoiding circuit interruptions caused by poor contact at a single point, significantly improving the stability and reliability of the negative electrode electrical connection, and ensuring smooth current transmission. The rotationally symmetrical layout design ensures that the two negative electrode plates 502 are spatially symmetrical at specific angles. This allows them to better adapt to the connection point positions on the PCB board 300 and the minute manufacturing tolerances or assembly deviations of the negative electrode surface of the battery 700 during installation. Even with slight misalignment, the rotationally symmetrical spring can ensure effective and consistent contact between the two contact points and the corresponding negative electrode connection point 303 and the negative electrode surface of the battery 700 through its elastic deformation, improving production yield and connection stability. The two outwardly extending negative electrode plates 502, in conjunction with functional components such as the positive electrode side positioning piece 404 of the positive electrode spring 400, can jointly apply radial constraint forces to the installed battery 700 from different directions, strengthening the clamping effect on the battery 700 and jointly restricting the movement of the battery 700 within the mounting plane. This further prevents the battery 700 from loosening and shaking, enhancing the reliability of mechanical fixation.

[0028] like Figure 1 and Figure 5As shown, in this embodiment, a reinforcing rib 601 is provided at the bottom of the inner cavity of the back cover 600. The reinforcing rib 601 is positioned opposite to the overlapping end face of the PCB board 300 and the bracket 200. Providing a reinforcing rib 601 at the bottom of the inner cavity of the back cover 600 can significantly increase the local rigidity and overall mechanical strength of the back cover 600 at this location. When the back cover 600 is properly engaged, the reinforcing rib 601 can effectively resist outward forces that may be generated by the internal battery 700 or other components, as well as inward pressure caused by accidental external squeezing or impact, preventing the back cover 600 from undergoing plastic deformation or elastic deformation such as dents or bending, thus ensuring the flatness of the product's appearance and the integrity of its structure. The reinforcing rib 601 is positioned opposite the overlapping end face of the PCB board 300 and the bracket 200. When the back cover 600 is closed, the reinforcing rib 601 just abuts against or is very close to the overlapping end of the PCB board 300 and the bracket 200, providing an additional support point from the direction of the back cover 600 for the overhanging portion of the PCB board 300 and the bracket 200 (i.e. the first clamping wall formed). This can suppress the warping or shaking that may occur when the PCB board 300 and the bracket 200 are subjected to pressure from the battery 700 or external vibration, making the entire battery 700 fixing mechanism composed of the PCB board 300, the bracket 200, the positive electrode spring 400, the negative electrode spring 500, etc., more stable and reliable. The reinforcing rib 601 interacts with the overlapping end faces of the PCB board 300 and the bracket 200, which are arranged opposite to each other, and indirectly participates in the radial fixation of the battery 700 and combines with the axial fixation. This enhances the rigidity of the second clamping wall (back cover 600) and ensures that it can effectively cooperate with the first clamping wall (PCB board 300 and bracket 200) to stably press the battery 700 into the predetermined installation position from both sides, preventing the battery 700 from moving in the radial and axial directions, and further improving the overall stability of the battery 700 fixation.

[0029] like Figure 1As shown, in this embodiment, the assembly channel is located within the inner cavity of the outer casing 100, and the assembly channel and the outer casing 100 form a double-layered composite channel. The battery assembly channel, formed by the PCB board 300, bracket 200, positive electrode spring 400, and negative electrode spring 500, constitutes an internal support structure. Combined with the outer casing 100, it forms a double-layered composite wall structure, enhancing the overall mechanical strength and rigidity of the battery assembly area of ​​the device. This structure can more effectively resist deformation of the outer casing 100 caused by external compression, collision, or displacement and expansion of the internal battery 700, protecting the internal electronic components from damage and improving the structural reliability and durability of the product. Integrating the battery assembly channel into the inner cavity of the outer casing 100 makes the installation space of the battery 700 integrated with the structure of the outer casing 100, rather than a separate component. The independently attached battery compartment, with its nested design, fully utilizes the internal three-dimensional space of the outer shell 100, avoiding structural redundancy and helping to reduce the overall size of the device or make the layout more compact, in line with the development trend of miniaturization and integration of electronic devices. The internal battery assembly channel provides a precise and smooth guiding path for the radial insertion of the battery 700, ensuring that the battery 700 can easily and accurately slide into the predetermined position. At the same time, the outer shell 100 constitutes the first physical barrier protecting the battery 700, effectively isolating it from external dust, moisture and other contaminants, and reducing the risk of direct physical impact to the battery 700, thus protecting and isolating it. The double-layered overlapping channel structure design, by tightly integrating the internal functional structure with the external protective shell, simultaneously achieves multiple effects such as enhanced mechanical strength, optimized space utilization, and improved guiding and protective performance, thereby improving the overall structural performance of the product.

[0030] like Figure 1 As shown, in this embodiment, the assembly port of the housing 100 has a notch 101 for easy insertion or removal of the battery 700 by hand. The notch 101 forms an open operating area at the edge of the assembly port of the housing 100, easily accessible to fingers or tools. When the user needs to install or replace the battery 700, they can easily grasp the edge of the battery 700 through this notch 101, thus smoothly sliding the battery 700 radially into or out of the assembly channel without the need for other tools. This greatly simplifies the installation and removal of the battery 700, improving product maintainability and user experience. The notch 101 provides clear visual guidance, clearly indicating the position and direction (radial) of the battery 700 installation and removal. The user can directly observe part of the battery 700 or the internal structure of the battery compartment through the notch 101, thus more intuitively determining the correct installation orientation and position of the battery 700, playing a role in assisting positioning and guiding operations, and reducing the possibility of misoperation.

[0031] like Figure 1 and Figure 2As shown, in this embodiment, the PCB board 300 is connected to the bracket 200 at multiple points and is jointly inserted into the housing 100. The PCB board 300 is firmly connected to the bracket 200 through multiple connection points (such as clips, screw fixing points, or positioning posts), forming a more rigid composite module that integrates circuit and mechanical support functions. This prevents the PCB board 300 from shaking, warping, or shifting relative to the bracket 200, significantly enhancing the structural stability and integrity of the assembly itself. By pre-assembling the PCB board 300 and the bracket 200 into a single module, and then inserting them into the housing 100 as a unit, this assembly strategy of integrating parts into a whole reduces the steps of aligning and installing multiple independent parts one by one inside the narrow housing 100, simplifying the final assembly process. At the same time, through the cooperation of the bracket 200 and the corresponding guide slots or positioning structures on the housing 100, the entire circuit module can be positioned in the predetermined position within the housing 100 more quickly and accurately, improving the accuracy, efficiency, and consistency of production assembly. The relative positions of the battery holders on the PCB board 300, the positive electrode spring 400, and the negative electrode spring 500, along with the structure of the bracket 200, together constitute the geometry and dimensions of the battery assembly channel. By precisely fixing the PCB board 300 and the bracket 200 through multi-point connections, the stability of the relative positions between the components is ensured. Then, this high-precision integrated module is inserted into the housing 100, ensuring that the final battery assembly channel is accurately aligned with the assembly port, notch 101, and other structures on the housing 100. This ensures that the battery 700 can be smoothly installed and removed, realizing the intended design function.

[0032] like Figure 1 and Figure 5As shown, in this embodiment, the opening edge of the rear cover 600 is arc-shaped, and the inner wall surface of the rear cover 600 is provided with an annular groove arranged in a circumferential direction; the outer peripheral wall of the assembly opening of the outer shell 100 has a cover portion that matches the shape of the rear cover 600, and the outer peripheral wall of the cover portion is provided with annular ribs arranged in a ring for matching and fastening with the annular groove; the arc-shaped edge of the rear cover 600 and the outer shell 100 abut against each other, and the fastening of the annular groove and the annular ribs together achieve the anti-reverse and anti-detachment function after the rear cover 600 is closed on the assembly opening. The annular groove on the inner wall of the rear cover 600 interlocks with the annular rib on the fitting part of the outer shell 100, effectively resisting the separation force of the rear cover 600 relative to the outer shell 100 in the opening direction, achieving a reliable anti-reverse and anti-detachment function. Simultaneously, the cooperation between the circumferentially circumferential annular groove and the annular rib also limits the possibility of relative rotation or misalignment between the rear cover 600 and the outer shell 100, achieving a multi-dimensional stable connection. The tight interlocking of the annular groove and the annular rib forms a tortuous, airtight barrier at their contact interface. Combined with the top-abutting contact of the arc-shaped edges between the rear cover 600 and the outer shell 100, this constitutes an effective sealing structure, significantly preventing external dust, fine debris, and moisture from intruding into the equipment through the seams. This protects internal electronic components such as the PCB board 300 and battery 700 from contamination and corrosion, improving product performance. The design enhances environmental adaptability and long-term reliability; the arc-shaped opening edge design and the guiding effect of the groove ribs make it easier to align and insert the back cover 600 during fastening; when pressure is applied, the arc-shaped contact surface provides a smooth transition, and the process of the annular rib sliding into the annular groove provides the user with a clear audible signal or feedback of proper engagement, improving the positive assembly experience; similarly, when opening is required, a specific force is usually applied to overcome the groove rib interlocking, preventing accidental opening while providing clear operational feedback; the structural cooperation between the annular ribs and the annular groove increases the material strength and local rigidity of the back cover 600 and the outer shell 100 in the joint area, making this area more able to withstand repeated assembly and disassembly operations and external stresses, improving the durability of the parts; the joint seam is more uniform and concealed, which helps to improve the overall appearance and aesthetics of the product. Optionally, the inner wall of the rear cover 600 is provided with annular ribs arranged in a circumferential pattern; the outer peripheral wall of the mounting opening of the outer shell 100 has a cover portion that matches the shape of the rear cover 600, and the outer peripheral wall of the cover portion is provided with annular grooves arranged in a ring for matching and engaging with the annular grooves. Optionally, the combination structure of the annular ribs and annular grooves can also be replaced by a combination structure of snap-fit ​​and snap-slot. Optionally, the combination structure of the annular ribs and annular grooves and the combination structure of snap-fit ​​and snap-slot can also coexist.

[0033] The thermometer of this embodiment includes the battery fixing structure described above.

[0034] In practice, a battery fixing structure and an electronic thermometer are provided. The electronic thermometer includes a bracket 200, an LCD display, a conductive strip, a PCB board 300, a temperature sensor, a buzzer, a positive electrode spring 400, a negative electrode spring 500, a button battery (battery 700), a housing 100, a temperature probe, and a back cover 600. The bracket 200 has a mounting position for installing the button battery, and the button battery can be radially installed into the mounting position when it is in the mounting position.

[0035] The PCB board 300 is provided with potential connection holes (positive connection point 302 and negative connection point 303). The potential connection holes are connected and fixed to the point connection ears of the positive spring 400 and the negative spring 500 by solder. The positive spring 400 is provided with a flexible bending position, which is used to abut against the front of the button battery and press the button battery into the mounting position from the axial direction. The negative spring 500 is used to abut against the back of the button battery and press the battery 700 into the mounting position from the axial direction. The negative spring 500 has a 180-degree symmetrical structure, which makes the overall assembly manufacturability high.

[0036] The bracket 200 is equipped with protruding positioning riveting posts. The bracket 200 and the PCB board 300 are riveted together by stamping positioning posts, which is simple, reliable and efficient to produce.

[0037] The back cover 600 is positioned above the battery 700 and is fastened to the outer casing 100. The back cover 600 has a recessed limiting rib (reinforcing rib 601) inside, which is used to radially limit the battery 700 after it enters the mounting position.

[0038] Compared with the prior art, the beneficial effects of this utility model are as follows: In this utility model, the battery fixing structure allows the button battery to be installed radially into the fixing position, which facilitates the disassembly and replacement of the button battery. The positive electrode spring 400 and the negative electrode spring 500 press the button battery axially and tightly into the mounting position. The ribs recessed in the back cover 600 provide radial limiting. The multiple limiting of the battery 700 in the axial and radial directions can ensure that the connection of the battery 700 is more stable and reliable. Moreover, the manufacturing process is simple and the manufacturability is high.

[0039] Any matters not covered in this utility model are common knowledge.

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

[0041] The embodiments described above are merely examples of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

[0042] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A battery fixing structure characterized by comprising: It includes a housing (100), a bracket (200), a PCB board (300), a positive electrode spring (400), a negative electrode spring (500), and a back cover (600). The housing (100) has an assembly port. The PCB board (300) is mounted on the bracket (200) and the battery slot on the PCB board (300) extends out of the bracket (200). The positive electrode spring (400) is electrically connected from the first surface of the battery slot to the positive electrode of the PCB board (300), and the negative electrode spring (500) is electrically connected from the second surface of the battery slot to the negative electrode of the PCB board (300). Together, they are mounted into the mounting port of the housing (100) from the end away from the battery slot. The PCB board (300) is clamped to the circumferential side wall of the battery (700) by the battery clamping clamp. The PCB board (300), bracket (200), positive electrode spring (400) and negative electrode spring (500) surround the battery and form an assembly channel for the battery (700) to be installed radially. The PCB board (300) and the bracket (200) are stacked to form the first clamping wall on the first side of the battery (700), and the back cover (600) is fastened to the assembly port of the outer shell (100) and forms the second clamping wall on the second side of the battery (700). The first clamping wall and the second clamping wall are arranged opposite to each other.

2. The battery fixation structure according to claim 1, characterized by, The battery slot includes a U-shaped groove (301), which is arranged towards the rear cover (600); A positive connection point (302) and a negative connection point (303) are provided on both sides of the U-shaped channel (301). The positive connection points (302) on both sides of the U-shaped channel (301) and the negative connection points (303) on both sides of the U-shaped channel (301) are arranged in a cross pattern.

3. The battery fixation structure according to claim 2, characterized by The positive electrode spring (400) includes a positive electrode substrate (401), a positive electrode sheet (402), a positive electrode end face positioning sheet (403), and a positive electrode side positioning sheet (404). Two positive electrode plates (402) are symmetrically distributed on both sides of the positive electrode substrate (401) and electrically connected to the corresponding positive electrode connection point (302). The positive electrode end face positioning plate (403) is arranged on the positive electrode substrate (401) and tilted towards the battery assembly position. The positive electrode side positioning piece (404) is arranged on the side of the positive electrode substrate (401) and towards the PCB board (300), and is used to work with the PCB board (300) and the bracket (200) to laterally push and limit the battery (700) and protect the end of the PCB board (300).

4. The battery fixation structure according to claim 2, characterized by The negative electrode spring (500) includes a negative electrode substrate (501) and a negative electrode piece (502). The two negative electrode pieces (502) are arranged laterally on the negative electrode substrate (501) and are arranged in a rotationally symmetrical manner. The two negative electrode pieces (502) are electrically connected to the corresponding negative electrode connection point (303).

5. The battery fixation structure according to claim 1, characterized by The bottom of the inner cavity of the back cover (600) is provided with a reinforcing rib (601), and the reinforcing rib (601) is arranged opposite to the overlapping end face of the PCB board (300) and the bracket (200).

6. The battery fixation structure according to any one of claims 1 to 5, characterized by, The assembly channel is located in the inner cavity of the outer shell (100), and the assembly channel and the outer shell (100) form a double-layered overlapping channel.

7. The battery fixation structure according to claim 6, characterized by The housing (100) has a notch (101) on its mounting port to facilitate the insertion or removal of the handheld battery (700).

8. The battery fixation structure according to any one of claims 1 to 5, characterized by, The PCB board (300) is connected to the bracket (200) at multiple points and is jointly inserted into the housing (100).

9. The battery fixation structure according to any one of claims 1 to 5, characterized by, The opening edge of the back cover (600) is arranged in an arc shape, and the inner wall surface of the back cover (600) is provided with an annular groove arranged in a circumferential ring. The outer peripheral wall of the mounting opening of the outer shell (100) has a cover portion that matches the shape of the rear cover (600), and the outer peripheral wall of the cover portion is provided with annular ribs arranged in a ring for matching and fastening with annular grooves. The arc-shaped edge of the back cover (600) and the outer shell (100) make contact, and the annular groove and the annular rib fasten together to achieve the anti-reverse and anti-detachment function of the back cover (600) after it is closed on the assembly port.

10. A thermometer characterized by comprising: The battery fixing structure includes any one of claims 1 to 9.

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