Thermistor mounting structure convenient for accurate positioning and temperature sensor

Abstract

The utility model discloses a thermistor installation structure convenient for accurate positioning and a temperature sensor, the thermistor installation structure comprises a support and a heat conduction cover body, the support is provided with a first installation groove used for installing a thermistor, the heat conduction cover body is covered on the support, and the inner side of the heat conduction cover body is contacted with the surface of the thermistor; the inner side of the heat conduction cover body is provided with a central positioning point, and the central positioning point is aligned with the center of the first installation groove. According to the utility model, the design is reasonable, the installation is convenient, the central positioning point is arranged on the heat conduction cover body, so that the front-back offset distance of the thermistor in the first installation groove can be conveniently observed and determined, adjustment and deviation correction are carried out, accurate positioning of the thermistor is realized, and the temperature sensing effect is good.

Description

Technical Field

[0001] The utility model relates to the technical field of temperature sensors, and in particular to a thermistor installation structure and a temperature sensor that are convenient for precise positioning. Background Art

[0002] Currently, temperature sensors are widely used for temperature control and temperature detection in household appliances such as induction cookers, electric pressure cookers, rice cookers, electric ovens, disinfection cabinets, water dispensers, microwave ovens, and electric heaters. These temperature sensors typically use axial-leaded glass-encapsulated thermistors as the temperature sensing element. These thermistors can be used to suppress high inrush currents and have the advantages of being small, rugged, easy to install automatically, and suitable for use in harsh environments such as high temperature and high humidity.

[0003] The accuracy of thermistor mounting directly affects the precision of temperature measurement. Traditional thermistor mounting structures often lack effective positioning measures, leading to deviations during installation, which in turn affects the accuracy and stability of temperature measurements. Therefore, developing a mounting structure that can precisely position thermistors is crucial for improving the performance of temperature sensors. Utility Model Content

[0004] The purpose of this utility model is to provide a thermistor mounting structure and temperature sensor that facilitates precise positioning, so as to solve the problems raised in the above background technology. To achieve the above purpose, this utility model provides the following technical solutions:

[0005] A first aspect of the present invention provides a thermistor mounting structure that facilitates precise positioning, comprising a bracket and a thermally conductive cover, wherein the bracket is provided with a first mounting slot for mounting the thermistor, the thermally conductive cover is fitted over the bracket, and the inner side of the thermally conductive cover contacts the surface of the thermistor; a central positioning point is provided on the inner side of the thermally conductive cover, and the central positioning point is aligned with the center of the first mounting slot.

[0006] Furthermore, a first positioning line and a second positioning line intersecting with each other are provided on the inner side of the heat-conducting cover, and the intersection of the first positioning line and the second positioning line is a central positioning point.

[0007] Furthermore, the first positioning line intersects the second positioning line perpendicularly, and the second positioning line coincides with the length direction of the first installation groove.

[0008] Furthermore, the bracket is provided with a limiting member, and when the heat-conducting cover is covered on the bracket, the limiting member is located in the extension direction of the first positioning line.

[0009] Further, the support is provided with a positioning member, and the heat-conducting cover body is provided with a positioning portion, the positioning member and the positioning portion are in abutting fit when the heat-conducting cover body covers the support, so that the center positioning point is aligned with the center of the first mounting slot.

[0010] Further, the inner side of the heat-conducting cover body is provided with a contact slot along the extension direction of the second positioning line, the intersection of the first positioning line and the second positioning line coincides with the center of the contact slot when the heat-conducting cover body covers the support, and the slot wall of the contact slot is in contact with the surface of the thermistor.

[0011] Further, the support is further provided with a second mounting slot for mounting a thermal fuse, and the first mounting slot and the second mounting slot are arranged in parallel and spaced apart.

[0012] The utility model discloses a second aspect provides a temperature sensor, including temperature sensing shell and the thermistor mounting structure of any one described above, the thermistor mounting structure is installed with thermistor, the temperature sensing shell is sleeved on the mounting structure, and the inner wall of temperature sensing shell is in contact with the outside of heat-conducting cover body.

[0013] The utility model discloses the beneficial effect lies in: the utility model discloses reasonable in design, and installation is convenient, and the center positioning point is arranged in heat-conducting cover body, so as to observe and determine the front and back offset distance of thermistor in the first mounting slot and adjust the deviation, realize the accurate positioning of thermistor, and the temperature sensing effect is good. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical scheme in the embodiment of the utility model, the following will be briefly introduced the drawing needed to be used in the embodiment, and obviously, the drawing in the following description only is some embodiments of the utility model, and for the ordinary skilled person in the art, under the premise of not paying the creative labor, still can obtain other drawings according to these drawings.

[0015] Figure 1 It is the structural schematic diagram of axial lead glass encapsulation type thermistor in prior art.

[0016] Figure 2 It is the structural schematic diagram of embodiment one of the utility model.

[0017] Figure 3 It is the structural schematic diagram of support in embodiment one of the utility model.

[0018] Figure 4 It is the structural schematic diagram of heat-conducting cover body in embodiment one of the utility model.

[0019] Figure 5 It is the structural schematic diagram of embodiment two of the utility model.

[0020] It should be noted that the drawings are not necessarily drawn to scale, but are merely shown in a schematic manner that does not affect the reader's understanding. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] In this utility model, terms such as "upper," "lower," "left," "right," "front," "back," "top," "bottom," "inner," "outer," "center," "vertical," "horizontal," "transverse," and "longitudinal" indicate positions or locations based on the positions or locations shown in the accompanying drawings. These terms are primarily intended to better describe the utility model and its embodiments and are not intended to limit the devices, elements, or components indicated to having a specific orientation, or to being constructed or operated in a specific orientation.

[0023] Furthermore, some of the above terms may be used to express other meanings besides indicating a position or location. For example, the term "on" may also be used to indicate a dependency or connection in certain circumstances. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0024] Furthermore, the terms "installed," "disposed," "provided with," "connected," and "connected" should be interpreted broadly. For example, they can refer to fixed connections, removable connections, or integral structures; mechanical connections or electrical connections; direct connections, indirect connections through an intermediary, or internal communication between two devices, elements, or components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0025] Furthermore, the terms "first," "second," and the like are primarily used to distinguish different devices, elements, or components (which may or may not be the same in type and configuration) and are not intended to indicate or imply the relative importance or quantity of the devices, elements, or components indicated. Unless otherwise specified, "plurality" means two or more.

[0026] It should also be understood that the terms used in the present utility model specification are only for the purpose of describing specific embodiments and are not intended to limit the present utility model. As used in the present utility model specification and the appended claims, unless otherwise clearly indicated by the context, the singular form "a", "an" and "the" are intended to include the plural forms as well.

[0027] It should be further understood that the term "and / or" as used in the present utility model specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes these combinations. Embodiment

[0028] A thermistor mounting structure facilitating accurate positioning, comprising a bracket 1 and a heat-conducting cover 2, the bracket 1 is provided with a first mounting groove 11 for mounting a thermistor 3, the heat-conducting cover 2 is covered on the bracket 1, and the inner side of the heat-conducting cover 2 is in contact with the surface of the thermistor 3; the inner side of the heat-conducting cover 2 is provided with a center positioning point 21, which is aligned with the center of the first mounting groove 11.

[0029] As an example, referring to Figures 1 to 3 , the embodiment provides a thermistor mounting structure facilitating accurate positioning, comprising a bracket 1 and a heat-conducting cover 2, the bracket 1 is provided with a first mounting groove 11 for mounting a thermistor 3, referring to Figure 1 , the mounted thermistor 3 is usually an axial lead glass package type thermistor 3, which has a visible transparent dividing line 31 in the middle part; the heat-conducting cover 2 is covered on the bracket 1, and the inner side of the heat-conducting cover 2 is in contact with the surface of the thermistor 3, the temperature of the electric appliance is transmitted to the thermistor 3 through the heat-conducting cover 2, and the thermistor 3 transmits temperature information to the controller of the electric appliance.

[0030] However, it should be noted that since the length of the first mounting groove 11 is greater than the length of the thermistor 3, it is easy to cause front and rear deviation when the thermistor 3 is mounted into the first mounting groove 11, and it is difficult to accurately mount the thermistor 3 to the center position of the first mounting groove 11, thereby affecting the temperature measurement accuracy. To solve this technical problem, the embodiment sets a center positioning point 21 on the inner side of the heat-conducting cover 2, and when the heat-conducting cover 2 is covered with the bracket 1, the center positioning point 21 is aligned with the center of the first mounting groove 11.

[0031] The design principle of the center positioning point 21 is: when manually installing the thermistor 3, the operator can observe whether the transparent dividing line 31 of the thermistor 3 is aligned with the center positioning point 21 through the gap between the thermally conductive cover 2 and the bracket 1 before completely covering the thermally conductive cover 2 and the bracket 1, thereby determining the front and rear offset distance of the thermistor 3 in the first mounting groove 11 and adjusting and correcting the offset until the center positioning point 21 is aligned with the transparent dividing line 31 of the thermistor 3, achieving precise positioning and ensuring a good temperature sensing effect. In addition, the setting of the center positioning point 21 of the thermal conductive cover 2 also facilitates the application of the thermistor installation structure of this embodiment in the automated assembly production process. The common visual recognition technology in the prior art is used to automatically identify the transparent dividing line 31 of the thermistor 3 and the center positioning point 21 of the thermal conductive cover 2. Then, the thermistor 3 is moved by an automated moving device according to the center positioning point 21 of the thermal conductive cover 2, so that the transparent dividing line 31 is aligned with the center positioning point 21, thereby achieving fast and accurate positioning and automated assembly, promoting the development of the thermistor 3 installation process towards automation, improving installation accuracy and production efficiency, and ensuring a good temperature sensing effect.

[0032] In one embodiment, a first positioning line 22 and a second positioning line 23 intersecting each other are provided on the inner side of the thermal cover 2 . When the thermal cover 2 is covered on the bracket 1 , the intersection point of the first positioning line 22 and the second positioning line 23 is aligned with the center of the first mounting groove 11 .

[0033] As an example, see Figure 2 If the thermal cover 2 only uses a single dot as the center positioning point 21, it is inconvenient for the operator to observe during the manual assembly process, and it is difficult to quickly find the center positioning point 21. In order to facilitate the operator to quickly observe the center positioning point 21 and improve work efficiency, this embodiment provides a first positioning line 22 and a second positioning line 23 that intersect on the inner side of the thermal cover 2. The intersection of the first positioning line 22 and the second positioning line 23 is used as the center positioning point 21. When the thermal cover 2 is covered on the bracket 1, the intersection of the first positioning line 22 and the second positioning line 23 is aligned with the center of the first mounting groove 11. Before the thermal cover 2 is completely covered with the bracket 1, the operator can quickly and clearly observe the center positioning point 21 based on the two positioning lines extending outward from the center positioning point 21. In addition, when an automated assembly production process is used, it is also convenient for the visual recognition device to quickly identify the center positioning point 21. In other embodiments, other shapes that facilitate observation of the center positioning point 21 can also be used, such as a star-shaped marking number, a Pozidrivia mark, etc.

[0034] In one embodiment, the first positioning line 22 and the second positioning line 23 intersect perpendicularly, and the second positioning line 23 coincides with the length direction of the first installation groove 11 .

[0035] As an example, see Figure 2 , the first positioning line 22 and the second positioning line 23 are perpendicular to each other, and the second positioning line 23 coincides with the length direction of the first mounting groove 11; when the thermistor 3 is at the center position of the first mounting groove 11, the transparent division line 31 of the thermistor 3 coincides with the first positioning line 22, so that the operator can quickly judge the front and back offset distance of the thermistor 3 during the manual assembly process, and then adjust and correct the deviation to achieve fast and accurate positioning.

[0036] In an embodiment, the support 1 is provided with a limiting piece 12, and when the heat-conducting cover 2 is covered on the support 1, the limiting piece 12 is in the extension direction of the first positioning line 22.

[0037] As an example, see Figure 2 and Figure 3 , the support 1 is provided with a limiting piece 12, and when the heat-conducting cover 2 is covered on the support 1, the limiting piece 12 is in the extension direction of the first positioning line 22; during the manual assembly process, the operator can first abut the side edge of the heat-conducting cover 2 with the limiting piece 12, and then turn down the heat-conducting cover 2 with the side edge as the axis to gradually cover the heat-conducting cover 2 on the support 1, and during the covering process, it can be observed whether the first positioning line 22 accurately coincides with the transparent division line 31 of the thermistor 3, so as to judge the front and back offset distance of the thermistor 3.

[0038] In an embodiment, the support 1 is provided with a positioning piece 13, and the heat-conducting cover 2 is provided with a positioning part 24, and when the heat-conducting cover 2 is covered on the support 1, the positioning piece 13 and the positioning part 24 are in abutting fit, so that the center positioning point 21 is aligned with the center of the first mounting groove 11.

[0039] As an example, see Figure 2 and Figure 3 , the support 1 is provided with two positioning pieces 13, and the heat-conducting cover 2 is provided with two positioning parts 24 which are matched with the shapes of the positioning pieces 13, and when the heat-conducting cover 2 is covered on the support 1, the positioning pieces 13 and the positioning parts 24 are in abutting fit, so as to realize the accurate positioning and abutting of the heat-conducting cover 2 and the support 1, prevent the direction from deviating, and make the center positioning point 21 aligned with the center of the first mounting groove 11.

[0040] In an embodiment, the inner side of the heat-conducting cover 2 is provided with a contact groove 25 along the extension direction of the second positioning line 23, and when the heat-conducting cover 2 is covered on the support 1, the intersection point of the first positioning line 22 and the second positioning line 23 coincides with the center of the contact groove 25, and the groove wall of the contact groove 25 is in contact with the surface of the thermistor 3.

[0041] As an example, see Figure 4A contact groove 25 is provided on the inner side of the thermally conductive cover 2 along the extension direction of the second positioning line 23. The shape of the contact groove 25 is a semicircular groove adapted to the shape of the thermistor 3. When the thermally conductive cover 2 is covered on the bracket 1, the intersection point of the first positioning line 22 and the second positioning line 23 coincides with the center of the contact groove 25. The groove wall of the contact groove 25 is in contact with the surface of the thermistor 3, which can increase the contact area between the thermally conductive cover 2 and the thermistor 3, thereby improving the thermal conductivity.

[0042] In one embodiment, the bracket 1 is further provided with a second mounting groove 14 for mounting a thermal fuse, and the first mounting groove 11 and the second mounting groove 14 are arranged parallel to each other and spaced apart.

[0043] As an example, see Figure 2 and Figure 3 The bracket 1 is further provided with a second mounting groove 14 for mounting a thermal fuse, and the first mounting groove 11 and the second mounting groove 14 are arranged parallel to each other and spaced apart. Since the first mounting groove 11 and the second mounting groove 14 are arranged spaced apart from each other, an insulating sleeve does not need to be installed on the outside of the thermistor 3. On the one hand, the thermistor 3 can be effectively adhered to the surface of the heat-conducting cover 2, thereby improving the thermal reaction speed and temperature measurement accuracy, and preventing the product from having a slow thermal reaction and poor thermal reaction consistency. On the other hand, the thermistor 3 can be exposed, making it easy to observe the transparent dividing line 31 thereon, thereby achieving accurate positioning of the thermistor 3. Example

[0044] Based on the inventive concept of the above-mentioned thermistor mounting structure, this embodiment provides a temperature sensor, including a temperature sensing housing 4 and any of the above-mentioned thermistor mounting structures; a thermistor 3 is installed in the thermistor mounting structure, the temperature sensing housing 4 is sleeved on the mounting structure, and the inner wall of the temperature sensing housing 4 is in contact with the outer side of the heat-conducting cover 2.

[0045] As an example, see Figure 5 A temperature sensor includes a temperature sensing housing 4 and a thermistor mounting structure. A thermistor 3 is mounted within the thermistor mounting structure. The temperature sensing housing 4 is sleeved onto the thermistor mounting structure. The outer surface of the temperature sensing housing 4 contacts the electrical appliance, while the inner wall of the temperature sensing housing 4 contacts the outer surface of a thermally conductive cover 2. During operation, the temperature of the electrical appliance is transmitted to the thermistor 3 through the temperature sensing housing 4 and then the thermally conductive cover 2. The thermistor 3 then transmits the temperature information to the appliance's controller.

[0046] Regarding the embodiments of the present invention, it should also be noted that, in the absence of conflict, the embodiments of the present invention and the features therein can be combined with each other to obtain new embodiments.

[0047] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. The scope of protection of the present invention shall be subject to the scope of protection of the claims. Although the present invention has been disclosed as a preferred embodiment, it is not intended to limit the present invention. Any person skilled in the art can, without departing from the scope of the present invention, make some changes or modifications to the above disclosed technical contents into equivalent embodiments. However, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the content of the present invention are still within the scope of the present invention.

Claims

1. A thermistor mounting structure that facilitates precise positioning, comprising a bracket (1) and a heat-conducting cover (2), wherein the bracket (1) is provided with a first mounting groove (11) for mounting the thermistor (3), the heat-conducting cover (2) covers the bracket (1), and the inner side of the heat-conducting cover (2) contacts the surface of the thermistor (3); characterized in that: A central positioning point (21) is provided on the inner side of the heat-conducting cover (2), and the central positioning point (21) is aligned with the center of the first installation groove (11).

2. The thermistor mounting structure according to claim 1, wherein: A first positioning line (22) and a second positioning line (23) that intersect are provided on the inner side of the heat-conducting cover (2), and the intersection of the first positioning line (22) and the second positioning line (23) is a central positioning point (21).

3. The thermistor mounting structure according to claim 2, wherein: The first positioning line (22) and the second positioning line (23) intersect vertically, and the second positioning line (23) coincides with the length direction of the first installation groove (11).

4. The thermistor mounting structure according to claim 3, wherein: The bracket (1) is provided with a limiting member (12); when the heat-conducting cover (2) is covered on the bracket (1), the limiting member (12) is located in the extension direction of the first positioning line (22).

5. The thermistor mounting structure according to claim 2, wherein: The bracket (1) is provided with a positioning piece (13), and the heat-conducting cover (2) is provided with a positioning portion (24). When the heat-conducting cover (2) is covered on the bracket (1), the positioning piece (13) and the positioning portion (24) are docked and matched, so that the central positioning point (21) is aligned with the center of the first installation groove (11).

6. The thermistor mounting structure according to claim 2, wherein: A contact groove (25) is provided on the inner side of the heat-conducting cover (2) along the extension direction of the second positioning line (23); when the heat-conducting cover (2) is covered on the bracket (1), the intersection of the first positioning line (22) and the second positioning line (23) coincides with the center of the contact groove (25), and the groove wall of the contact groove (25) is in contact with the surface of the thermistor (3).

7. The thermistor mounting structure according to claim 1, wherein: The bracket (1) is further provided with a second mounting groove (14) for mounting a thermal fuse, and the first mounting groove (11) and the second mounting groove (14) are arranged parallel to each other and spaced apart.

8. A temperature sensor, characterized in that: The invention comprises a temperature-sensing housing (4) and a thermistor mounting structure according to any one of claims 1 to 7; a thermistor (3) is mounted in the thermistor mounting structure, the temperature-sensing housing (4) is sleeved on the mounting structure, and the inner wall of the temperature-sensing housing (4) contacts the outer side of the heat-conducting cover (2).

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