Temperature measuring device

Abstract

The utility model relates to a temperature measuring device which comprises an insulating bottom shell, an insulating cover, a temperature measuring probe, a leakage-proof sealing ring and a spring, the insulating cover is connected to the upper side of the insulating bottom shell, a through hole is formed in the center of the insulating cover, and the temperature measuring probe axially slides in the through hole. The leakage-proof sealing ring and the spring are arranged in the insulating bottom shell and matched between the temperature measuring probe and the insulating bottom shell, a lower enclosure wall embedded into the insulating bottom shell extends from the bottom surface of the insulating cover, a step surface corresponding to the lower enclosure wall is arranged on the inner peripheral wall of the insulating bottom shell, a convex pressing rib extends from the bottom surface of the lower enclosure wall close to the inner side, and the convex pressing rib is matched with the step surface. An outer circular rib of the leakage-proof sealing ring is clamped and fixed between the bottom surface of the lower enclosure wall and the step surface through a convex pressing rib; according to the temperature measuring device, the clamping stability of the leakage-proof sealing ring can be guaranteed through the convex pressing rib, the practicability is high, and the structure is simple.

Description

Technical Field

[0001] This utility model relates to the field of temperature probes, specifically a temperature measuring device. Background Technology

[0002] The current temperature measuring device structure is as shown in the induction cooker temperature measuring system and induction cooker in Chinese patent document, application number: 201910321326.7. It mainly includes an insulating cover fixed to an opening in a panel; a sealing ring embedded in the insulating cover; an inner core sensor configured to freely extend and retract from the insulating cylindrical wall of the insulating cover; an insulating waterproof drainage bracket connected to the insulating cover by a buckle, and the inner core sensor is installed inside; and a leak-proof sealing ring and a spring fixed on the insulating cylinder of the inner core sensor. The innermost and outermost rings of the leak-proof sealing ring have protruding ribs. When fixed, the ribs are fixed between another insulating cylindrical wall and the step. However, in actual use, it has been found that the clamping of the outermost ribs between the planes is not stable enough. When the leak-proof sealing ring deforms at high temperature, it may loosen or detach. Therefore, the applicant has improved and perfected the structure of the temperature measuring device to solve the above problems in a structural way for consumers to choose to use. Utility Model Content

[0003] The purpose of this invention is to solve the aforementioned problems and provide a temperature measuring device with a simple and reasonable structure.

[0004] A temperature measuring device includes an insulating base shell, an insulating cover, a temperature probe, a leak-proof sealing ring, and a spring. The insulating cover is connected to the upper side of the insulating base shell and has a through hole in its center. The temperature probe slides axially within the through hole. The leak-proof sealing ring and the spring are disposed within the insulating base shell and cooperate between the temperature probe and the insulating base shell. The bottom surface of the insulating cover extends into a lower enclosure wall embedded within the insulating base shell. The inner peripheral wall of the insulating base shell has a stepped surface corresponding to the lower enclosure wall. The bottom surface of the lower enclosure wall has a protruding rib extending inward. The outer circular rib of the leak-proof sealing ring is clamped between the bottom surface of the lower enclosure wall and the stepped surface by the protruding rib.

[0005] The objective of this utility model can also be achieved by the following technical measures:

[0006] As a more specific embodiment, a number of fastening protrusions extend from the outer peripheral wall of the lower enclosure, and fastening grooves are provided on the inner peripheral wall of the insulating bottom shell corresponding to the fastening protrusions. The insulating cover is fastened to the insulating bottom shell by the cooperation of the fastening protrusions and the fastening grooves; or the fastening protrusions and the fastening grooves are provided with mutually cooperating guide slopes at the joint.

[0007] As a further solution, a foolproof protrusion extends longitudinally on the outer peripheral wall of the lower enclosure, and a foolproof groove is formed on the inner peripheral wall of the insulating bottom shell corresponding to the foolproof protrusion. The alignment of the snap-fit ​​protrusion and the snap-fit ​​groove is achieved through the cooperation of the foolproof protrusion and the foolproof groove.

[0008] As a further embodiment, the insulating cover has an upper enclosure extending upward along the edge of the through hole, the temperature probe and the upper enclosure form a linear sliding fit, and the outer side wall of the temperature probe has an outward flange extending outward, the outward flange being limited and abutting against the bottom surface of the insulating cover.

[0009] As a further embodiment, the bottom of the insulating base shell is provided with a recessed cavity, the temperature probe is limited to the upper side of the recessed cavity, the lower part of the spring is set inside the recessed cavity, the upper part of the spring is sleeved on the outside of the temperature probe, and the outer side wall of the temperature probe extends with a limiting ring that cooperates with the spring limiting, and the temperature probe achieves elastic sliding through the spring.

[0010] As a further embodiment, a limiting groove is provided between the limiting ring and the outer flange at intervals to form a limiting groove, the leak-proof sealing ring is sleeved on the middle position of the temperature probe, and the inner rib of the leak-proof sealing ring is clamped in the limiting groove.

[0011] As a further embodiment, a sealing gasket is also included, the outer periphery of which is folded into an outer edge, and the sealing gasket is fixed to the top surface of the insulating cover by the outer edge.

[0012] As a further embodiment, the bottom wall of the cavity is provided with a cable outlet hole, and a spring support surface is formed on the outer periphery of the cable outlet hole. The two cables of the temperature measuring probe are led out of the insulating bottom shell through the cable outlet hole.

[0013] As a further embodiment, the temperature probe includes an insulating cylindrical tube, a thermally conductive aluminum cap, and a thermistor. The thermally conductive aluminum cap is fitted onto the top of the insulating cylindrical tube and seals the upper port of the insulating cylindrical tube. The thermistor is disposed inside the insulating cylindrical tube and rests against or abuts the surface of the thermally conductive aluminum cap. The two cables of the thermistor are led outward through the lower port of the insulating cylindrical tube, and the cavity of the insulating cylindrical tube is filled with epoxy resin.

[0014] As a further embodiment, the top end of the insulating cylindrical tube is provided with several filler cuts that communicate with the tube cavity. The filler cuts have a dovetail groove structure that is narrow at the top and wide at the bottom, and the filler cuts are filled with epoxy resin that overflows from the tube cavity.

[0015] The beneficial effects of this utility model are as follows:

[0016] This utility model discloses a temperature measuring device. After the insulating cover and the insulating base are assembled, the outer rib of the leak-proof sealing ring is clamped in the space between the bottom surface of the lower enclosure and the step surface, which plays a part of the fixing role. Secondly, the convex rib on the bottom surface of the lower enclosure presses against the main body of the leak-proof sealing ring, and the distance between the convex rib and the step surface is less than the thickness of the outer rib. This ensures that even if the leak-proof sealing ring deforms and pulls the outer rib, it can still limit the outer rib to the outer space, thus ensuring the stability of the leak-proof sealing ring clamping. It is highly practical and has a simple structure. Attached Figure Description

[0017] Figure 1 This is a cross-sectional structural diagram of the temperature measuring device in this utility model.

[0018] Figure 2 for Figure 1 Enlarged structural diagram at point B.

[0019] Figure 3 This is an exploded view of the temperature measuring device of this utility model.

[0020] Figure 4 This is a schematic diagram of the insulating cover structure of this utility model.

[0021] Figure 5 This is a schematic diagram of the insulating bottom shell structure of this utility model.

[0022] Figure 6 This is a schematic diagram of the insulating cylindrical tube structure of this utility model.

[0023] Figure 7 This is an exploded view of the temperature probe of this utility model. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0025] See Figures 1 to 5 As shown, a temperature measuring device includes an insulating base shell 1, an insulating cover 2, a temperature probe 3, a leak-proof sealing ring 4, and a spring 5. The insulating cover 2 is connected to the upper side of the insulating base shell 1 and has a through hole 201 in the center. The temperature probe 3 slides axially within the through hole 201. The leak-proof sealing ring 4 and the spring 5 are disposed within the insulating base shell 1 and cooperate between the temperature probe 3 and the insulating base shell 1. The bottom surface of the insulating cover 2 extends to form a lower enclosure wall 21 embedded within the insulating base shell 1. The inner peripheral wall of the insulating base shell 1 has a stepped surface 101 corresponding to the lower enclosure wall 21. The bottom surface of the lower enclosure wall 21 has a protruding rib 22 extending inward. The outer circular rib 41 of the leak-proof sealing ring 4 is clamped between the bottom surface of the lower enclosure wall 21 and the stepped surface 101 by the protruding rib 22.

[0026] The specific clamping method of the outer circular rib 41 of this structure is as follows: the outer circular rib 41 of the leak-proof sealing ring 4 is clamped in the space X between the bottom surface of the lower enclosure 21 and the step surface 101, which plays a part of the fixing role. Secondly, the convex pressure rib 22 on the bottom surface of the lower enclosure 21 presses against the main body of the leak-proof sealing ring 4, and the distance between the convex pressure rib 22 and the step surface 101 is less than the thickness of the outer circular rib. This ensures that even if the leak-proof sealing ring 4 deforms and pulls the outer circular rib 41, it can still limit the outer circular rib 41 in the outer space X, which can ensure the stability of the clamping of the leak-proof sealing ring 4. It is practical and simple in structure.

[0027] In this embodiment, the convex rib 22 is disposed on the bottom surface of the lower enclosure 21. In other embodiments, the convex rib 22 can also be disposed on the step surface 101, which can achieve the same clamping effect.

[0028] A plurality of fastening protrusions 23 extend from the outer peripheral wall of the lower enclosure 21. The inner peripheral wall of the insulating bottom shell 1 is provided with fastening grooves 102 corresponding to the fastening protrusions 23. Through the cooperation of the fastening protrusions 23 and the fastening grooves 102, the insulating cover 2 is fastened to the insulating bottom shell 1. The fastening connection method enables quick assembly and disassembly. Moreover, in this embodiment, the fastening grooves 102 are not designed to penetrate the wall thickness of the insulating bottom shell 1 compared to the prior art, which can prevent liquid from entering the interior of the insulating bottom shell 1 through the fastening grooves 102.

[0029] Furthermore, the joint between the snap-fit ​​protrusion 23 and the snap-fit ​​groove 102 is provided with mutually cooperating guide slopes 103; when the insulating bottom shell 1 and the insulating cover 2 are assembled together, the two guide slopes 103 help the snap-fit ​​protrusion 23 to engage in the inner peripheral wall of the insulating bottom shell 1, improving assembly efficiency and making assembly easier.

[0030] In other embodiments, the outer peripheral wall of the lower enclosure 21 and the inner peripheral wall of the insulating bottom shell 1 can also be connected by a threaded structure.

[0031] A mis-proof protrusion 24 extends longitudinally from the outer peripheral wall of the lower enclosure 21. A mis-proof groove 10 is formed on the inner peripheral wall of the insulating bottom shell 1 corresponding to the mis-proof protrusion 24. Through the cooperation of the mis-proof protrusion 24 and the mis-proof groove 10, the fastening protrusion 23 and the fastening groove 102 are aligned. The cooperation of the mis-proof protrusion 24 and the mis-proof groove 10 constrains the installation direction of the insulating cover, so that the fastening protrusion 23 can quickly align with the position of the fastening groove 102, thereby improving the assembly effect.

[0032] The insulating cover 2 extends upward along the edge of the through hole 201 with an upper enclosure 25. The temperature probe 3 and the upper enclosure 25 form a linear sliding fit. The outer wall of the temperature probe 3 extends with an outward flange 321, which is limited and abuts against the bottom surface of the insulating cover 2. The upper enclosure 25 ensures that the temperature probe 3 can slide up and down along the axial direction, thus playing a guiding role.

[0033] The bottom of the insulating base shell 1 is provided with a recessed cavity 11. The temperature probe 3 is limited to the upper side of the recessed cavity 11. The lower part of the spring 5 is set in the recessed cavity 11, and the upper part of the spring 5 is sleeved on the outside of the temperature probe 3. The outer side wall of the temperature probe 3 extends with a limiting ring 311 that cooperates with the limiting of the spring 5. The temperature probe 3 achieves elastic sliding through the spring.

[0034] The limiting ring 311 and the outer flange 321 are spaced apart to form a limiting groove A. The leak-proof sealing ring 4 is sleeved on the middle position of the temperature probe 3, and the inner rib 42 of the leak-proof sealing ring 4 is clamped in the limiting groove A. The limiting groove A can restrict the leak-proof sealing ring 4 from being installed in the middle position of the temperature probe 3, and prevent the leak-proof sealing ring 4 from shifting up and down after being sleeved.

[0035] It also includes a sealing gasket 6, the outer periphery of which is folded with an outer edge 61. The sealing gasket 6 is fixed to the top surface of the insulating cover 2 by the outer edge 61. The sealing gasket 6 fully covers the top surface of the insulating cover 2, which can restrict water flow to the top surface of the insulating cover 2. The use of the outer edge 61 for fixing can eliminate the need for glue and other fixing methods, and the installation is more convenient and faster.

[0036] The cavity 11 has a cable outlet hole 12 on its bottom wall. A spring support surface 13 is formed on the outer periphery of the cable outlet hole 12. The two cables 331 of the temperature probe 3 are led out of the insulating bottom shell 1 through the cable outlet hole 12.

[0037] See Figure 6 and Figure 7 As shown, the temperature probe 3 includes an insulating cylindrical tube 31, a thermally conductive aluminum cover 32, and a thermistor 33. The thermally conductive aluminum cover 32 is sleeved on the top of the insulating cylindrical tube 31 and seals the upper port of the insulating cylindrical tube 31. The thermistor 33 is disposed inside the insulating cylindrical tube 31 and abuts or contacts the cover surface of the thermally conductive aluminum cover 32. The two cables 331 of the thermistor 33 are led outward through the lower port of the insulating cylindrical tube 31, and the cavity of the insulating cylindrical tube 31 is filled with epoxy resin 34.

[0038] The top end of the insulating cylindrical tube 31 has two filler cuts 312 that communicate with the tube cavity. The filler cuts 312 have a dovetail groove structure that is narrow at the top and wide at the bottom. The filler cuts 312 are filled with epoxy resin 34 that overflows from the tube cavity.

[0039] This temperature probe 3 has a filler cutout 312 added to the insulating cylindrical tube 31, which makes the epoxy resin 34 more fully encapsulated in the tube cavity. It can also improve the interlocking force between the insulating cylindrical tube 31 and the thermally conductive aluminum cap 32, making the connection more secure. The hardened epoxy resin 34 can be held in place by the part encapsulated in the filler cutout 312 (marked M1 in the attached diagram), which solves the problem of epoxy resin falling off the smooth tube wall of the insulating cylindrical tube 31 during the heating process.

[0040] In this embodiment, the thermally conductive aluminum cover 32 is made of stamped aluminum sheet. In other embodiments, the thermally conductive aluminum cover 32 may also be made of other metal materials, such as copper sheet.

[0041] The outer diameter of the insulating cylindrical tube 31 is larger than the inner diameter of the cover wall of the thermally conductive aluminum cover 32, and the thermally conductive aluminum cover 32 and the insulating cylindrical tube 31 form an interference fit. By installing the thermally conductive aluminum cover 32 onto the insulating cylindrical tube 31 through the interference fit, the assembly efficiency can be improved. Moreover, the epoxy resin 34 overflowing from the filler cut 312 contacts the inner wall surface of the thermally conductive aluminum cover 32, which plays a certain adhesive role, making the connection more firm and stable.

[0042] The above describes the preferred embodiments of this utility model, illustrating and describing its basic principles, main features, and advantages. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection of this utility model as defined by the appended claims and their equivalents.

Claims

1. A temperature measuring device, comprising an insulating base (1), an insulating cover (2), a temperature probe (3), a leak-proof sealing ring (4), and a spring (5), wherein the insulating cover (2) is connected to the upper side of the insulating base (1) and has a through hole (201) in the center, the temperature probe (3) slides axially within the through hole (201), and the leak-proof sealing ring (4) and the spring (5) are disposed within the insulating base (1) and cooperate between the temperature probe (3) and the insulating base (1), characterized in that: The bottom surface of the insulating cover (2) extends into a lower enclosure wall (21) embedded in the insulating bottom shell (1). The inner peripheral wall of the insulating bottom shell (1) is provided with a stepped surface (101) corresponding to the lower enclosure wall (21). The bottom surface of the lower enclosure wall (21) extends into a raised rib (22). The outer round rib (41) of the leak-proof sealing ring (4) is clamped between the bottom surface of the lower enclosure wall (21) and the stepped surface (101) by the raised rib (22).

2. The temperature measuring device according to claim 1, characterized in that: A plurality of snap-fit ​​protrusions (23) extend from the outer peripheral wall of the lower enclosure (21). The inner peripheral wall of the insulating bottom shell (1) is provided with snap-fit ​​grooves (102) corresponding to the snap-fit ​​protrusions (23). The insulating cover (2) is snapped onto the insulating bottom shell (1) by the cooperation of the snap-fit ​​protrusions (23) and the snap-fit ​​grooves (102); or the snap-fit ​​protrusions (23) and the snap-fit ​​grooves (102) are provided with mutually cooperating guide slopes (103).

3. The temperature measuring device according to claim 2, characterized in that: A foolproof protrusion (24) extends longitudinally on the outer peripheral wall of the lower enclosure (21), and a foolproof groove (10) is opened on the inner peripheral wall of the insulating bottom shell (1) corresponding to the foolproof protrusion (24). Through the cooperation of the foolproof protrusion (24) and the foolproof groove (10), the alignment of the fastening protrusion (23) and the fastening groove (102) is realized.

4. The temperature measuring device according to claim 1, characterized in that: The insulating cover (2) extends upward along the edge of the through hole (201) with an upper enclosure wall (25). The temperature probe (3) and the upper enclosure wall (25) form a linear sliding fit. The outer wall of the temperature probe (3) extends with an outward flange (321). The outward flange (321) is limited and abuts against the bottom surface of the insulating cover (2).

5. A temperature measuring device according to claim 4, characterized in that: The bottom of the insulating base (1) is provided with a recessed cavity (11). The temperature probe (3) is limited to the upper side of the recessed cavity (11). The lower part of the spring (5) is set in the recessed cavity (11). The upper part of the spring (5) is sleeved on the outside of the temperature probe (3). The outer wall of the temperature probe (3) extends with a limiting ring (311) that cooperates with the limiting of the spring (5). The temperature probe (3) achieves elastic sliding through the spring.

6. A temperature measuring device according to claim 5, characterized in that: The limiting ring (311) and the outer flange (321) are spaced apart to form a limiting groove (A). The leak-proof sealing ring (4) is sleeved in the middle position of the temperature probe (3), and the inner rib (42) of the leak-proof sealing ring (4) is clamped in the limiting groove (A).

7. A temperature measuring device according to claim 1, characterized in that: It also includes a sealing gasket (6), the outer periphery of which is folded with an outer edge (61), and the sealing gasket (6) is fixed to the top surface of the insulating cover (2) by the outer edge (61).

8. A temperature measuring device according to claim 5, characterized in that: The cavity (11) has a cable outlet hole (12) on its bottom wall. A spring support surface (13) is formed on the outer periphery of the cable outlet hole (12). The two cables (331) of the temperature probe (3) are led out of the insulating bottom shell (1) through the cable outlet hole (12).

9. A temperature measuring device according to claim 1, characterized in that: The temperature probe (3) includes an insulating cylindrical tube (31), a thermally conductive aluminum cover (32), and a thermistor (33). The thermally conductive aluminum cover (32) is fitted onto the top of the insulating cylindrical tube (31) and seals the upper port of the insulating cylindrical tube (31). The thermistor (33) is placed inside the insulating cylindrical tube (31) and abuts or touches the cover surface of the thermally conductive aluminum cover (32). The two cables (331) of the thermistor (33) are led outward through the lower port of the insulating cylindrical tube (31), and the cavity of the insulating cylindrical tube (31) is filled with epoxy resin (34).

10. A temperature measuring device according to claim 9, characterized in that: The top end of the insulating cylindrical tube (31) is provided with several filler cuts (312) that communicate with the tube cavity. The filler cuts (312) have a dovetail groove structure that is narrow at the top and wide at the bottom. The filler cuts (312) are filled with epoxy resin (34) that overflows from the tube cavity.

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