Food thermometer

Abstract

A food thermometer (999), comprising: a food thermometer housing (10), which is provided with a tip portion (110) and a handle portion (120) connected to each other, wherein the tip portion (110) and the handle portion (120) are hollow inside to form an accommodating cavity (140); a tail cap (150), which is arranged at the tail end of the handle portion (120) and closes an opening of the accommodating cavity (140); a battery (320) and a circuit board (310) arranged in the accommodating cavity (140), the battery (320) being electrically connected to the circuit board (310); a power supply member (3340) and a signal member (3330), which are separately electrically connected to the circuit board (310); and a substrate (330), which has one end arranged on the circuit board (310), the power supply member (3340) and / or the signal member (3330) being arranged on the substrate (330), and at least part of the substrate (330) containing tetrafluoroethylene. Thus, stable transmission of signals can be realized while powering the food thermometer.

Description

Food thermometer

[0001] Related applications

[0002] This application claims priority to Chinese patent application number 202311580788.3, ​​filed on November 23, 2023, entitled “Food Thermometer,” the entire text of which is incorporated herein by reference. Technical Field

[0003] The present application relates to the field of wireless temperature measuring instruments, and in particular to a food thermometer. Background Art

[0004] A food thermometer can be inserted into food to measure its internal temperature or the ambient temperature outside it. It then transmits or broadcasts this temperature data to an external device, allowing users to receive cooking temperature information via a mobile device. Traditional wireless food thermometers typically have built-in batteries and are charged externally. However, these devices are susceptible to battery and signal issues, leading to inaccurate temperature measurements or poor signal transmission.

[0005] Summary of the Invention

[0006] The present application aims to solve one of the technical problems in the related art at least to a certain extent. To this end, one object of the present application is to provide a food thermometer.

[0007] According to one aspect of the present application, a food thermometer is provided, comprising: a housing having a tip portion and a handle portion connected to each other, the tip portion and the handle portion being hollow inside to form a receiving cavity; a tail cover, arranged at the tail end of the handle portion and closing the opening of the receiving cavity; a battery and a circuit board arranged in the receiving cavity, the battery being electrically connected to the circuit board; a power supply component and a signal component, the power supply component and the signal component being electrically connected to the circuit board respectively; a substrate, one end of the substrate being arranged on the circuit board, at least one of the power supply component and the signal component being arranged on the substrate, at least a portion of the substrate comprising tetrafluoroethylene.

[0008] In addition, the food thermometer according to the above embodiment of the present application or the food cooking machine using the food thermometer may also have the following additional technical features:

[0009] In some embodiments of the present application, both the substrate and the tail cover are provided with connection holes, and the connection holes are configured to be connected to the connector to achieve connection between the substrate and the tail cover.

[0010] In some embodiments of the present application, the signal member is a metal terminal, which is disposed on a circuit board and abuts against the handle portion.

[0011] In some embodiments of the present application, at least a portion of the handle is made of metal, and the metal portion of the handle is electrically connected to the metal terminal.

[0012] In some embodiments of the present application, the power supply is a first wire, and two ends of the first wire are electrically connected to the circuit board and the tail cover respectively.

[0013] In some embodiments of the present application, the signal element is a second wire, one end of the second wire is electrically connected to the circuit board, and the other end of the second wire is arranged inside the handle.

[0014] In some embodiments of the present application, a fixing member is provided in the handle portion, and the other end of the second wire is fixed to the fixing member.

[0015] In some embodiments of the present application, the fixing member is made of metal.

[0016] In some embodiments of the present application, the signal element is a spring wire.

[0017] In some embodiments of the present application, a ceramic ring is provided at the end of the circuit board.

[0018] In some embodiments of the present application, silicone is filled between the substrate and the tail cover.

[0019] In some embodiments of the present application, a sealing ring is further provided between the tail cover and the tail end of the handle portion.

[0020] The present application also provides a food thermometer, comprising: a housing having a tip portion and a handle portion connected to each other, at least a portion of the handle portion being made of metal, and the tip portion and the handle portion being hollow inside to form a receiving cavity; a tail cover, arranged at the tail end of the handle portion and closing the opening of the receiving cavity; a battery and a circuit board arranged in the receiving cavity, the battery being electrically connected to the circuit board; a power supply and a signal component, the two ends of the power supply component being electrically connected to the circuit board and the tail cover respectively, the signal component being electrically connected to the circuit board, and at least a portion of the signal component being electrically connected to the metal portion of the handle portion.

[0021] In some embodiments of the present application, the signal member is a metal terminal, which is disposed on a circuit board and abuts against the handle portion.

[0022] In some embodiments of the present application, the signal element is a second wire, and two ends of the second wire are electrically connected to the circuit board and the metal part of the handle portion respectively.

[0023] In some embodiments of the present application, the power supply is a first wire, and two ends of the first wire are electrically connected to the circuit board and the tail cover respectively.

[0024] In some embodiments of the present application, the power supply is a metal tube, and both ends of the metal tube are electrically connected to the circuit board and the tail cover respectively.

[0025] In some embodiments of the present application, one or more ceramic rings are further provided between the metal tube and the tip portion.

[0026] In some embodiments of the present application, a sealing ring is further provided between the tail cover and the tail end of the handle portion.

[0027] The present application also provides a food thermometer, comprising: a housing having a tip portion and a handle portion connected to each other, the tip portion and the handle portion being hollow inside to form a receiving cavity; a tail cover, arranged at the tail end of the handle portion and closing the opening of the receiving cavity; a battery and a circuit board arranged in the receiving cavity, the battery being electrically connected to the circuit board; a power supply component and a signal component, the power supply component and the signal component being electrically connected to the circuit board respectively; a conduit, the conduit being arranged between the circuit board and the tail cover, at least one of the power supply component and the signal component being arranged on the conduit.

[0028] In some embodiments of the present application, the power supply is a metal tube, and both ends of the metal tube are electrically connected to the circuit board and the tail cover respectively.

[0029] In some embodiments of the present application, the catheter is sleeved on the outside of the metal tube, and the signal element is arranged on the catheter.

[0030] In some embodiments of the present application, the material of the catheter includes tetrafluoroethylene or ceramic.

[0031] In some embodiments of the present application, a sealing ring is further provided between the tail cover and the tail end of the handle portion.

[0032] The above-mentioned food thermometer can power the food thermometer while achieving stable signal transmission by independently arranging the power supply component and the signal component. It also helps to ensure stable installation and connection of the power supply component and the signal component, ensuring the normal use of the signal transmission and charging functions of the food thermometer. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the conventional technology, the following briefly introduces the drawings required for use in the embodiments or the conventional technology descriptions. Obviously, the drawings described below are merely embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the disclosed drawings without any creative work.

[0034] FIG1 is a schematic diagram of the overall structure of a food thermometer in one embodiment of the present application.

[0035] FIG2 is a cross-sectional view of the internal structure of a food thermometer according to an embodiment of the present application.

[0036] FIG3 is an enlarged view of point A in FIG2 .

[0037] FIG4 is a schematic diagram of the internal structure of a food thermometer according to an embodiment of the present application.

[0038] FIG5 is a schematic diagram of the connection structure between the tail cover and the base plate according to an embodiment of the present application.

[0039] FIG6 is a schematic diagram of a signal component according to an embodiment of the present application.

[0040] FIG7 is a schematic diagram of a power supply according to an embodiment of the present application.

[0041] FIG8 is a schematic diagram of the internal structure of a food thermometer according to an embodiment of the present application.

[0042] FIG9 is a schematic diagram of the internal structure of a food thermometer according to an embodiment of the present application.

[0043] FIG10 is a schematic diagram of the internal structure of a food thermometer according to an embodiment of the present application.

[0044] FIG11 is a schematic diagram of the internal structure of a food thermometer according to an embodiment of the present application.

[0045] FIG12 is a schematic diagram of the internal structure of a food thermometer according to an embodiment of the present application.

[0046] FIG13 is a schematic diagram of the internal structure of a food thermometer according to an embodiment of the present application.

[0047] FIG14 is a schematic diagram of the catheter structure of an embodiment of the present application.

[0048] Description of reference numerals:

[0049] 10. Housing; 110. Tip; 120. Handle; 130. Card slot; 140. Accommodating cavity; 150. Tail cover; 160. Temperature sensor; 20. Connector assembly; 210. First sleeve; 220. Second sleeve; 230. Card block; 310. Circuit board; 3110. First plug-in slot; 3120. Metal terminal; 320. Battery; 330. Base plate; 3310. Second plug-in slot; 3330. Signal component; 3340. Power supply component; 340. Shielding tube; 350. Screw; 360. Metal tube; 370, first terminal; 380, second terminal; 410, first wire; 420, second wire; 440, mounting cavity; 450, fixing piece; 510, silicone; 520, first ceramic ring; 530, second ceramic ring; 540, third ceramic ring; 550, limiting ring; 560, limiting groove; 610, sealing ring; 620, spring wire; 630, straight end; 640, spring end; 720, conduit; 730, straight portion; 740, curved portion; 750, signal layer; 999, food thermometer. DETAILED DESCRIPTION

[0050] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0051] To make the above-mentioned objects, features, and advantages of the present application more clearly understood, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0052] In the description of this application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0053] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of this application, if the term "plurality" appears, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0054] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only embodiment.

[0055] Referring to Figures 1 and 2, Figure 1 shows a schematic diagram of the overall structure of a food thermometer 999 in an embodiment of the present application. The food thermometer 999 provided in an embodiment of the present application includes a housing 10, and the housing 10 includes a tip 110 and a handle 120. The tip 110 is connected to the handle 120. The tip 110 is configured to be inserted into food to measure the internal temperature of the food. One end of the tip 110 can be a tip with a sealed opening to facilitate insertion into food. The handle 120 is for the operator to hold. The tip 110 and the handle 120 can be directly connected, such as a threaded connection, such as one end of the handle has an external thread, which is inserted into the opening of the tip 110 and has an internal thread, or the tip 110 and the handle 120 can be connected through a connecting component 20. The tip portion 110 and the handle portion 120 are hollowed out to form a cavity 140. The hollow portion of the tip portion 110 and the handle portion 120 collectively form a housing cavity 140. For example, the housing cavity 140 is configured to house the various electronic components required for the food thermometer 999, such as a circuit board, a battery, and a temperature sensor. A tail cap 150 is mounted on the end of the handle portion 120 away from the tip portion 110. The tail cap 150 is made of metal and can be secured to the handle portion 120 via a threaded connection, a snap fastener, or injection molding. The tail cap 150 is configured to enclose the housing cavity 140. Multiple independent temperature sensors 160 are mounted within the housing cavity 140. For example, one temperature sensor 160 is disposed within the tip portion 110 to detect the internal temperature of the food, and another is disposed within the handle portion 120 to detect the temperature of the external environment surrounding the food.

[0056] Referring to Figure 2, a battery 320, a circuit board 310 and a substrate 330 are also installed in the accommodating cavity 140. The battery 320 is connected to the circuit board 310 to provide power to the circuit board 310. The substrate 330 is connected to the circuit board 320. The substrate 330 can be fixedly connected to the circuit board 320 or detachably connected. Generally, the substrate 330 and the circuit board 320 are electrically connected, that is, the substrate 330 can be printed with metal patterns, engraved with circuits, or inlaid with metal, or independent wires can be attached. The substrate 330 is generally made of a high-temperature resistant and high-strength material.

[0057] The accommodating cavity 140 also includes a power supply 3340 and a signaling element 3330. Each of these elements is electrically connected to the circuit board 310. The power supply 3340 is used to power the food temperature probe's internal battery, while the signaling element 3330 provides an antenna signal broadcast for the food temperature probe, enabling remote wireless transmission of the temperature data signal measured by the food temperature probe to other terminals. Referring to Figures 6 and 7, the power supply 3340 is located on the substrate 330 opposite the signaling element 3330. The power supply 3340 and the signaling element 3330 are offset. One end of the power supply 3340 is connected to the circuit board 310, while the other end contacts a screw 350, thereby achieving electrical connection to the tail cover 150. Since the tail cover 150 and the tip portion 110 are both made of metal, the tail cover 150 serves as the positive charging electrode and the tip portion 110 serves as the negative charging electrode. Combined with Figure 2, a metal terminal 3120 is installed on the circuit board 310, and the metal terminal 3120 is connected to the metal tip portion 110, thereby forming a loop to power the food thermometer 999.

[0058] As an example, the signal element 3330 is formed on the substrate 330 by silver plating and etching, and the power supply element 3340 is formed by etching. Since silver has a higher conductivity than copper, silver plating can reduce impedance and improve the radiation capability of the signal element 3330 as a signal element.

[0059] As an example, the power supply 3340 or the signaling member 3330 is disposed on the substrate 330; alternatively, both the power supply 3340 and the signaling member 3330 are disposed on the substrate 330. For example, the power supply 3340 and the signaling member 3330 can be selectively disposed on the substrate 330. As shown in FIG7 , the power supply 3340 is disposed on the substrate 330, and at least a portion of the signaling member 3330 is disposed within the handle portion 120. The signaling member 3330 can be disposed in a different structure than the power supply 3340, such as by an electrical conductor, a spring wire, an electrical contact, or other methods.

[0060] Exemplarily, the signaling member 3330 is disposed on the substrate 330 , and the power supply member 3340 has a structural arrangement other than that of the signaling member 3330 .

[0061] The power supply component 3340 and the signal component 3330 are independently arranged, which can effectively avoid the situation where the signals interfere with each other. At the same time, different transmission strengths and transmission media required by the two different signal types of charging signals and antenna signals can be achieved by adopting different conduction structures to improve product quality.

[0062] In this embodiment, part or the entire material of the substrate 330 is made of tetrafluoroethylene, which is a high-temperature resistant, high-strength plastic. The substrate 330 is made of glass fiber cloth, polytetrafluoroethylene resin, and polytetrafluoroethylene film through scientific formulation and strict pressing process. This process further improves the electrical performance of the substrate 330, with a wider dielectric constant range, low dielectric loss, and increased insulation resistance.

[0063] As an example, the substrate 330 includes PTFE glass fiber cloth material, which is essentially a polymer compound of polytetrafluoroethylene. It has the characteristics of high temperature resistance and high strength. Compared with traditional ceramic material substrates, it has higher electrical performance, a wider dielectric constant range, low dielectric loss, and good material toughness. It is not easy to break during installation, transportation and use, thereby ensuring the strength of the substrate 330.

[0064] As an example, the signal member is a metal terminal. Referring to Figure 8, at least a portion of the handle portion 120 is made of metal, and the handle portion 120 can be made of aluminum alloy. The circuit board 310 is installed with two elastic metal terminals in the extension direction of the tip portion 110, one of which is the first terminal 370 and the other is the second terminal 380. The first terminal 370 is elastically connected to the tip portion 110, and the second terminal 380 is electrically connected to the handle portion 120. The two elastic metal terminals and the contact position between the connecting tip portion 110 and the handle portion 120 can provide an electrical connection effect and facilitate installation.

[0065] The second terminal 380 serves as a signal component. Referring to FIG9 , the handle portion 120 is made of metal in whole or in part. The signal component connected to the circuit board 310 contacts the handle portion 120 through the second terminal 380 on the circuit board 310. The handle portion 120 serves as a part of the signal transmission. Since the signal component is connected to the metal part of the handle portion 120, the handle portion 120 is exposed to the outside of the food thermometer 999, which can make the propagation signal of the signal component stronger and the propagation distance longer.

[0066] As an example, the power supply or signal element is a wire. Referring to Figure 10 , a circuit board 310, a battery 320, and a first wire 410 are located within the accommodating cavity 140. The first wire 410 serves as the power supply. The battery 320 is connected to the circuit board 310. A mounting cavity 440 is defined at the end of the handle portion 120 away from the tip portion 110. The tail cap 150 is inserted into the mounting cavity 440. One end of the first wire 410 is connected to the circuit board 310, and the other end is connected to the tail cap 150.

[0067] As an example, the second wire 420 serves as a signal component. One end of the second wire 420 is connected to the circuit board 310, and the other end is close to the end of the handle 120 and does not contact the tail cover 150. In this case, the second wire 420 can independently realize signal propagation in the installation cavity 440 without being interfered with by the charging signal of the first wire 410.

[0068] Exemplarily, a fixing part 450 is provided in the installation cavity 440, and the other end of the second wire 420 is connected to the fixing part 450. The fixing part 450 is made of metal. The fixing part 450 is fixed in the handle part 120 and is electrically connected to the metal part of the handle part 120. On the one hand, even if the food thermometer 999 is hit or dropped, the fixing part 450 can ensure that the second wire 420 does not shake or end in the accommodating cavity 140. The fixing part 450 can act as a signal transmission medium to transmit the signal of the second wire 420 to the handle part 120. The handle part 120 can be made of aluminum alloy with PVD treatment on the surface. At this time, the handle part 120 serves as part of the signal transmission. Since the handle part 120 is exposed to the outside of the food thermometer 999, the signal transmission signal of the signal part can be stronger and the transmission distance can be longer.

[0069] The first conductive wire 410 or the second conductive wire 420 is in the accommodating cavity 140 . Due to the external insulation characteristics of the conductive wire, even if it contacts the substrate 330 , it will not affect the power supply components or signal components on the substrate 330 .

[0070] A shielding tube 340 is also provided on the circuit board 310. One end of the shielding tube 340 is connected to the circuit board 310, and the other end is inserted into the handle 120. The first wire 410 and the second wire 420 are both passed through the shielding tube 340. The shielding tube 340 can shield external signal interference, especially the food thermometer 999 antenna signal. The signal components can form a coaxial transmission waveguide within the shielding tube 340, ensuring signal transmission.

[0071] 2 and 3 , the connection assembly 20 includes a first sleeve 210 and a second sleeve 220. A slot 130 is defined on the inner wall of the tip portion 110 near the handle portion 120. A block 230 is provided on the first sleeve 210, which engages with the slot 130 to achieve positioning. The first sleeve 210 is threadedly connected to the second sleeve 220, which in turn is threadedly connected to the handle portion 120. This ensures a stable connection between the handle portion 120 and the tip portion 110, and facilitates installation and operation. In this embodiment, the tip portion 110 is made of steel, and the handle portion 120 is made of ceramic.

[0072] For example, referring to Figures 2 and 4 , a shielding tube 340 is fixed to the inner wall of the second sleeve 220, and the substrate 330 is disposed within the shielding tube 340. The shielding tube 340 secures the substrate 330, preventing it from shaking. Furthermore, the shielding tube 340 shields the substrate 330 from external signal interference, particularly the food thermometer 999 antenna signal. Signal components within the shielding tube 340 form a coaxial transmission waveguide, ensuring signal transmission. One end of the substrate 330 is disposed within the accommodating cavity 140 within the tip portion 110, and the other end extends into the handle portion 120. A first insertion slot 3110 is defined at the end of the circuit board 310 proximal to the substrate 330. The first insertion slot 3110 extends along the thickness of the circuit board 310 and penetrates the circuit board 310. The first insertion slot 3110 is configured to receive the substrate 330. A second insertion slot 3310 is defined at one end of the base plate 330, near the circuit board 310. This slot extends along the thickness of the base plate 330 and penetrates the base plate 330. The second insertion slot 3310 is configured to receive the circuit board 310. Soldering is performed at the insertion point between the circuit board 310 and the base plate 330 to secure the two together, ensuring a stable connection between the base plate 330 and the circuit board 310.

[0073] As an example, the base plate (330) and the tail cover (150) are both provided with connection holes, and the connection holes are connected by a connector to achieve the connection between the base plate (330) and the tail cover (150). For example, referring to Figures 2 and 5, the end of the base plate 330 away from the tip 110 is provided with a first connection hole (not shown in the figure), and the end of the tail cover 150 close to the base plate 330 is provided with a second connection hole (not shown in the figure). The first connection hole and the second connection hole are configured to be inserted with a screw 350. The screw 350 is used to fix the tail cover 150 and the base plate 330, which helps to achieve a better fixing effect and can minimize the shaking of the base plate 330. As an example, conductive glue can be applied to the screw 350 to strengthen the fixation to achieve a better electrical connection and fixing effect. A sealing ring 610 can also be set between the tail cover 150 and the handle portion 120 to achieve a sealing effect and minimize the entry of external gas or liquid into the accommodating cavity 140, thereby damaging components such as the battery 320 and the circuit board 310 in the accommodating cavity 140. By using the screws 350 for connection, the problem of small connectors being easily melted and thinned under high current, thereby causing a decrease in structural strength, can be avoided, thereby enhancing the connection effect between the substrate 330 and the tail cover 150.

[0074] For example, referring to Figures 2 and 6 , a signal element 3330 is provided on one side of the substrate 330. One end of the signal element 3330 is electrically connected to the circuit board 310, and the other end extends into the handle portion 120. The length of the signal element 3330 is 1 / 2 wavelength. In normal signal element designs, the length is usually designed to be 1 / 4 wavelength to meet performance requirements. However, in this application, the metal tip 110 is very long. If the signal element is designed to be 1 / 4 wavelength long, it will be completely covered by the metal, resulting in no radiation propagation. Furthermore, a signal element with a length of 1 / 2 wavelength will radiate better than one with a length of 1 / 4 wavelength. Therefore, in this application, the signal element is designed to be 1 / 2 wavelength long. As an example, in this embodiment, the signal element is designed as a 2.45 GHz signal element with a wavelength of 66.4 mm, meaning that 1 / 2 wavelength is 33.2 mm. By setting the signal element 3330 to be 1 / 2 wavelength, better radiation can be achieved.

[0075] Exemplarily, the electrical connection line of the temperature sensor 160 is set on the side close to the power supply 3340. Referring to Figure 4, because the temperature sensor 160 will affect the radiation efficiency of the signal component, setting the temperature sensor 160 on the side of the power supply 3340 can effectively reduce the impact.

[0076] As an example, the signal element is a spring wire. Referring to FIG. 12 , the second wire 420 can be a spring wire 620. The circuit board 310, battery 320, first wire 410, and spring wire 620 are disposed within the housing cavity 140. The circuit board 310 is connected to the battery 320. One end of the spring wire 620 is connected to the circuit board 310, and the spring wire 620 serves as the signal element. The spring wire 620 includes a straight end 630 and a spring end 640. The straight end 630 is connected to the circuit board 310, while the spring end 640 is disposed within the handle portion 120. The spring end 640 can better adapt to the structure of the housing cavity 140 within the handle portion 120, providing a more stable connection. One end of the first wire 410 is connected to the circuit board 310, and the other end is connected to the tail cap 150. The first wire 410 serves as the power supply, the tail cap 150 serves as the positive charging electrode, and the tip portion 110 serves as the negative charging electrode.

[0077] Exemplarily, a ceramic ring is provided at the end of the circuit board. Referring to FIG11 , a circuit board 310 and a battery 320 are provided in the accommodating cavity 140, and the battery 320 is connected to the circuit board 310. A first ceramic ring 520 can be sleeved on the end of the circuit board 310, that is, one end of the circuit board 310 is close to the position of the handle portion 120. The first ceramic ring 520 provided at this position can play a role in heat insulation for the components in the tip portion 110. Because the position of the handle portion 120 belongs to the cooking space of the food, the temperature is relatively high, and the tip portion 110 is inserted into the food, the temperature is relatively low. The first ceramic ring 520 at this position can play a good heat insulation effect, preventing the hot air in the accommodating cavity 140 from being conducted, and at the same time isolating the handle portion 120 from the high temperature outside to protect the circuit board 310, and also making the temperature detected by the temperature sensor 160 more accurate.

[0078] Exemplarily, silicone 510 is further provided at the connection position between the substrate 330 and the tail cover 150 in the accommodating cavity 140. As an example, the silicone 510 is silicone that can be heated and cured. For example, the model of the silicone 510 is K-5572, which is used to change the dielectric constant of the antenna medium, thereby optimizing the resonant frequency of the antenna and adjusting the resonant frequency of the antenna to the correct point.

[0079] For example, a sealing ring 610 is provided between the tail cover 150 and the tail end of the handle portion 120. The sealing ring 610 is provided between the tail cover 150 and the handle portion 120 to achieve a sealing effect, thereby minimizing the entry of external gas or liquid into the accommodating cavity 140 and causing damage to components such as the battery 320 and the circuit board 310 inside the accommodating cavity 140.

[0080] For example, FIG8 shows a schematic diagram of the overall structure of a food thermometer 999 according to an embodiment of the present application. The food thermometer 999 provided by an embodiment of the present application includes a housing 10, which includes a tip portion 110 and a handle portion 120. The tip portion 110 is connected to the handle portion 120. The tip portion 110 is configured to be inserted into food to measure the internal temperature of the food. One end of the tip portion 110 may have a sealed tip to facilitate insertion into the food. The handle portion 120 is for an operator to grasp. The tip portion 110 and the handle portion 120 may be directly connected, such as by a threaded connection, such as one end of the handle portion having external threads that are inserted into an opening and internal threads of the tip portion 110. Alternatively, the tip portion 110 and the handle portion 120 may be connected via a connecting assembly 20. The tip portion 110 and the handle portion 120 are hollow, and the hollow portion integrally forms a receiving cavity 140. As an example, the receiving cavity 140 is configured to accommodate various electronic components required for the food thermometer 999, such as circuit boards, batteries, and temperature sensors. A tail cap 150 is mounted on the end of the handle portion 120 away from the tip portion 110. The tail cap 150 is made of metal and can be fixed to the handle portion 120 by threaded connection, snap fastening, or injection molding. The tail cap 150 is configured to enclose the accommodating cavity 140. A plurality of independent temperature sensors 160 are mounted in the accommodating cavity 140. For example, one temperature sensor 160 is disposed in the tip portion 110 to detect the internal temperature of the food, and another is disposed in the handle portion 120 to detect the temperature of the external environment surrounding the food.

[0081] As an example, the handle portion 120 is made of metal in whole or in part. When a metal layer is coated on the outside of the handle portion 120, it can be connected to the signal component. The handle portion 120 and the circuit board 310 are connected through independent wires or metal contacts. By achieving electrical connection between the circuit board 320 and the metal outside the handle portion 120, the handle portion 120 can be used as a part of the signal component. The handle portion 120 can be used to transmit signals. At this time, the power supply is not connected to the handle portion 120. In this case, the external metal coating or metal plating of the handle portion 120 can be treated with PVD.

[0082] Exemplarily, a metal layer runs through the inside and outside of the handle portion 120, and the outer metal layer of the handle portion 120 can be conductive to the inner metal layer of the handle portion 120. The signal element can be a metal terminal on the circuit board 310. Referring to Figure 8, the second terminal 380 of the circuit board 310 serves as the signal element. The antenna signal element connected to the circuit board 310 contacts the handle portion 120 through the second terminal 380 on the circuit board 310. The handle portion 120 serves as a part of the signal transmission. Since the signal element is connected to the metal part of the handle portion 120, the handle portion 120 is exposed to the outside of the food thermometer 999, which can make the propagation signal of the signal element stronger and the propagation distance longer.

[0083] As an example, the power supply component and the signal component are respectively connected to different circuits of the circuit board 320. The power supply component and the signal component are independent circuits on the circuit board 320 and do not interfere with each other.

[0084] As an example, the signal member is a metal terminal. Referring to Figure 8, at least a portion of the handle portion 120 is made of metal, and the handle portion 120 can be made of aluminum alloy. The circuit board 310 is installed with two elastic metal terminals in the extension direction of the tip portion 110, one of which is the first terminal 370 and the other is the second terminal 380. The first terminal 370 is elastically connected to the tip portion 110, and the second terminal 380 is electrically connected to the handle portion 120. The two elastic metal terminals and the contact position between the connecting tip portion 110 and the handle portion 120 can provide an electrical connection effect and facilitate installation.

[0085] The second terminal 380 serves as a signal component, and the handle portion 120 is made of metal in whole or in part. The signal component connected to the circuit board 310 contacts the handle portion 120 through the second terminal 380 on the circuit board 310. The handle portion 120 serves as a part of the signal transmission. Since the signal component is connected to the metal part of the handle portion 120, the handle portion 120 is exposed to the outside of the food thermometer 999, which can make the propagation signal of the signal component stronger and the propagation distance longer.

[0086] As an example, the power supply is a metal tube 360, such as a copper tube. One end of the metal tube 360 ​​is connected to the circuit board 310, and the other end of the metal tube 360 ​​extends to the end of the handle portion 120. The tail cap 150 is inserted into the metal tube 360. A temperature sensor 160 is disposed within the tip portion 110, and another temperature sensor is disposed at one end of the tail cap 150.

[0087] In this embodiment, the metal tube 360 ​​serves as a power supply, the metal tube 360 ​​and the tail cover 150 serve as a charging positive electrode, the tip portion 110 serves as a charging negative electrode, and the tip portion 110 is connected to the circuit board 310 through the first terminal 370, so that the positive and negative electrodes are charged from the outside of the food thermometer 999.

[0088] For example, referring to FIG11 , a circuit board 310, a battery 320, and a metal tube 360 ​​are disposed within the housing cavity 140. The battery 320 is connected to the circuit board 310. One end of the metal tube 360 ​​is connected to the circuit board 310, and the other end is threadedly connected to the tail cover 150. The metal tube 360 ​​is a copper tube. One or more ceramic rings can be mounted at different positions on the metal tube 360 ​​to secure and insulate the components within the tip portion. For example, a first ceramic ring 520 is mounted within the tip portion 110. The first ceramic ring 520 is threadedly connected to the metal tube 360 ​​to limit the position of the metal tube 360. The first ceramic ring 520 can effectively fix and stabilize the circuit board 310 and the metal tube 360 ​​in the accommodating cavity 140 to ensure that they do not shake. In addition, the first ceramic ring 520 can also have a heat-insulating effect. Since the tip 110 is inserted into the food, the handle 120 is exposed to the outside of the food. Since the cooking temperature outside the food is relatively high, the temperature of the handle 120 is higher than that of the tip 110. The first ceramic ring 520 can isolate the heat conduction effect between the tip 110 and the handle 120, isolate the handle 120 from the external high temperature, protect the circuit board 310, and make the temperature detected by the temperature sensor 160 more accurate.

[0089] A second ceramic ring 530 and a third ceramic ring 540 are also installed in the tip portion 110. The second ceramic ring 530 and the third ceramic ring 540 are both threadedly connected to the metal tube 360. A limit ring 550 is provided between the second ceramic ring 530 and the third ceramic ring 540. A limit groove 560 is provided on the inner wall of the tip portion 110 near one end of the handle portion 120. The limit ring 550 engages with the limit groove 560, thereby achieving the connection and positioning between the tip portion 110 and the metal tube 360. In addition, the second ceramic ring 530 and the third ceramic ring 540 can also play the same role as the first ceramic ring 520 mentioned above. One end of the handle portion 120 is sleeved on the metal tube 360 ​​and inserted into the tip portion 110 to achieve the connection between the handle portion 120 and the tip portion 110.

[0090] Through the above method, the food thermometer 999 provides power and performs signal transmission, and at the same time can achieve that power transmission and signal transmission are independent of each other and do not interfere with each other, ensuring that the antenna signal of the food thermometer 999 is stable and charging is stable.

[0091] As an example, the power supply or signal element is a wire. Referring to Figure 10 , a circuit board 310, a battery 320, and a first wire 410 are located within the accommodating cavity 140. The first wire 410 serves as the power supply. The battery 320 is connected to the circuit board 310. A mounting cavity 440 is defined at the end of the handle portion 120 away from the tip portion 110. The tail cap 150 is inserted into the mounting cavity 440. One end of the first wire 410 is connected to the circuit board 310, and the other end is connected to the tail cap 150.

[0092] In other embodiments, the second wire 420 serves as a signal component, one end of the second wire 420 is connected to the circuit board 310, and the other end is close to the end of the handle portion 120 and does not contact the tail cover. In this case, the second wire can independently realize signal transmission in the installation cavity 440 without being interfered with by the charging signal of the first wire 410.

[0093] Exemplarily, a fixing part 450 is provided in the installation cavity 440, and the other end of the second wire 420 is connected to the fixing part 450. The fixing part 450 is made of metal. The fixing part 450 is fixed in the handle part 120 and is electrically connected to the metal part of the handle part 120. On the one hand, even if the food thermometer 999 is hit or dropped, the fixing part 450 can ensure that the second wire 420 does not shake or end in the accommodating cavity 140. The fixing part 450 can act as a signal transmission medium to transmit the signal of the second wire 420 to the handle part 120. The handle part 120 can be made of aluminum alloy with PVD treatment on the surface. At this time, the handle part 120 serves as part of the signal transmission. Since the handle part 120 is exposed to the outside of the food thermometer 999, the signal transmission signal of the signal part can be stronger and the transmission distance can be longer.

[0094] The aforementioned first conductive wire 410 and second conductive wire 420 are insulated conductive wires, that is, a layer of non-conductive material, such as resin, plastic, silicone rubber, PVC, etc., is evenly and tightly wrapped around the outer periphery of the wire made of copper, aluminum or silver to form an insulating layer to prevent the conductor from contacting the outside world and causing leakage, short circuit, electric shock and other accidents.

[0095] A food thermometer 999999 includes: a housing 10 having a tip portion 110 and a handle portion 120 connected to each other, the tip portion 110 and the handle portion 120 being hollowed out to form a receiving cavity 140; a tail cap 150 disposed at the tail end of the handle portion 120 and sealing the opening of the receiving cavity 140; a battery 320 and a circuit board 310 disposed within the receiving cavity 140, the battery 320 being electrically connected to the circuit board 310; a power supply 3340 and a signaling element 3330, each electrically connected to the circuit board 310; and a conduit 720 disposed between the circuit board 310 and the tail cap 150, with at least one of the power supply 3340 and the signaling element 3330 being disposed on the conduit 720. For example, the power supply 3340 is disposed on the conduit 720; alternatively, the signaling element 3330 is disposed on the conduit 720. Alternatively, the power supply element 3340 and the signal element 3330 are both disposed on the catheter 720 .

[0096] For example, FIG13 shows a schematic diagram of the overall structure of a food thermometer 999 according to an embodiment of the present application. A circuit board 310, a battery 320, a metal tube 360, and a conduit 720 are disposed within the housing chamber 140. The metal tube 360 ​​is a copper tube. The circuit board 310 is connected to the battery 320. One end of the metal tube 360 ​​is connected to the circuit board 310, and the other end extends to the end of the handle 120 away from the tip 110. The tail cap 150 is inserted into the metal tube 360. The metal tube 360 ​​serves as a power supply, the tail cap 150 serves as a positive charging electrode, and the tip 110 serves as a negative charging electrode. The conduit 720 is sleeved on the exterior of the metal tube 360. In conjunction with FIG14 , a signal layer 750 is disposed on the conduit 720, which serves as a signal element. The signal layer 750 includes a straight portion 730 and a curved portion 740. The straight portion 730 is connected to the circuit board 310, while the curved portion 740 is bent along the outer wall of the conduit 720, thereby increasing the length of the signal layer 750 and ensuring effective signal transmission. The metal tube 360 ​​and conduit 720 are nested within each other, ensuring the overall drop resistance of the food thermometer 999 and the overall stability of the components connected to them.

[0097] For example, a charging layer may be added to the catheter 720 , one end of the charging layer is connected to the circuit board 310 , and the other end extends to an end of the handle portion 120 away from the tip portion 110 .

[0098] As an example, the material of the conduit 720 can be the material of the aforementioned substrate 330, or ceramic material, both of which can well realize the function of the conduit 720 carrying signal components or power supply components and can withstand high temperatures and wear.

[0099] For example, a sealing ring 610 is provided between the tail cover 150 and the tail end of the handle portion 120. The sealing ring 610 is provided between the tail cover 150 and the handle portion 120 to achieve a sealing effect, thereby minimizing the entry of external gas or liquid into the accommodating cavity 140 and causing damage to components such as the battery 320 and the circuit board 310 inside the accommodating cavity 140.

[0100] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned 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.

[0101] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. A food thermometer (999), comprising: A housing (10) having a tip portion (110) and a handle portion (120) connected to each other, wherein a receiving cavity (140) is formed inside the tip portion (110) and the handle portion (120); A tail cover (150) is provided at the tail end of the handle portion (120) and closes the opening of the accommodating cavity (140); A battery (320) and a circuit board (310) are disposed in the accommodating cavity (140), wherein the battery (320) is electrically connected to the circuit board (310); A power supply component (3340) and a signal component (3330), wherein the power supply component (3340) and the signal component (3330) are electrically connected to the circuit board (310) respectively; as well as A substrate (330), one end of the substrate (330) is arranged on the circuit board (310), at least one of the power supply component (3340) and the signal component (3330) is arranged on the substrate (330), and at least a portion of the substrate (330) includes tetrafluoroethylene.

2. The food thermometer (999) according to claim 1, wherein: The base plate (330) and the tail cover (150) are both provided with connection holes, and the connection holes are configured to be connected to a connection piece to achieve connection between the base plate (330) and the tail cover (150).

3. The food thermometer (999) according to claim 1, wherein: The signal member (3330) is a metal terminal (3120), and the metal terminal (3120) is arranged on the circuit board (310), and the metal terminal (3120) abuts against the handle portion (120).

4. The food thermometer (999) according to claim 3, wherein: At least a portion of the handle portion (120) is made of metal, and the metal portion of the handle portion (120) is electrically connected to the metal terminal (3120).

5. The food thermometer (999) according to claim 1, wherein: The power supply (3340) is a first conductive wire (410), and two ends of the first conductive wire (410) are electrically connected to the circuit board (310) and the tail cover (150) respectively.

6. The food thermometer (999) according to claim 1, wherein: The signal element (3330) is a second conductive wire (420), one end of the second conductive wire (420) is electrically connected to the circuit board (310), and the other end of the second conductive wire (420) is disposed inside the handle portion (120).

7. The food thermometer (999) according to claim 6, wherein: A fixing member (450) is provided inside the handle portion (120), and the other end of the second wire (420) is fixed on the fixing member (450).

8. The food thermometer (999) according to claim 1, wherein: The signal element (3330) is a spring wire (620).

9. The food thermometer (999) according to claim 1, wherein: The ends of the circuit board (310) are sleeved with ceramic rings (520, 530).

10. A food thermometer (999), wherein: include: The housing (10) comprises a tip portion (110) and a handle portion (120) connected to each other, at least a portion of the handle portion (120) is made of metal, and the tip portion (110) and the handle portion (120) are hollow inside to form a receiving cavity (140); A tail cover (150) is provided at the tail end of the handle portion (120) and closes the opening of the accommodating cavity (140); A battery (320) and a circuit board (310) are disposed in the accommodating cavity (140), wherein the battery (320) is electrically connected to the circuit board (310); as well as A power supply member (3340) and a signal member (3330), wherein two ends of the power supply member (3340) are electrically connected to the circuit board (310) and the tail cover (150) respectively, the signal member (3330) is electrically connected to the circuit board (310), and at least a portion of the signal member (3330) is electrically connected to a metal portion of the handle portion (120).

11. The food thermometer (999) according to claim 10, wherein: The signal member (3330) is a metal terminal (3120), and the metal terminal (3120) is arranged on the circuit board (310), and the metal terminal (3120) abuts against the handle portion (120).

12. The food thermometer (999) according to claim 10, wherein: The signal element (3330) is a second conductive wire (420), and two ends of the second conductive wire (420) are respectively electrically connected to the circuit board (310) and the metal part of the handle portion (120).

13. The food thermometer (999) according to claim 10, wherein: The power supply (3340) is a first conductive wire (410), and two ends of the first conductive wire (410) are electrically connected to the circuit board (310) and the tail cover (150) respectively.

14. The food thermometer (999) according to claim 10, wherein: The power supply component (3340) is a metal tube (360), and two ends of the metal tube (360) are electrically connected to the circuit board (310) and the tail cover (150) respectively.

15. The food thermometer (999) according to claim 14, wherein: One or more ceramic rings (520, 530) are sleeved between the metal tube (360) and the tip portion (110).

16. The food thermometer (999) according to claim 10, wherein: A sealing ring (610) is also provided between the tail cover (150) and the tail end of the handle portion (120).

17. A food thermometer (999), comprising: A housing (10) having a tip portion (110) and a handle portion (120) connected to each other, wherein a receiving cavity (140) is formed inside the tip portion (110) and the handle portion (120); A tail cover (150) is provided at the tail end of the handle portion (120) and closes the opening of the accommodating cavity (140); A battery (320) and a circuit board (310) are disposed in the accommodating cavity (140), wherein the battery (320) is electrically connected to the circuit board (310); A power supply component (3340) and a signal component (3330), wherein the power supply component (3340) and the signal component (3330) are electrically connected to the circuit board (310) respectively; as well as A conduit (720), wherein the conduit (720) is disposed between the circuit board (310) and the tail cover (150), and at least one of the power supply component (3340) and the signal component (3330) is disposed on the conduit (720).

18. The food thermometer (999) according to claim 17, wherein: The power supply component (3340) is a metal tube (360), and two ends of the metal tube (360) are electrically connected to the circuit board (310) and the tail cover (150) respectively.

19. The food thermometer (999) according to claim 18, wherein: The conduit (720) is sleeved on the outside of the metal tube (360), and the signal element (3330) is arranged on the conduit (720).

20. The food thermometer (999) according to claim 19, wherein: The material of the conduit (720) includes tetrafluoroethylene or ceramic.

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