Temperature measuring device with replaceable temperature probe

Abstract

The utility model relates to a temperature measuring device with a replaceable temperature probe, which comprises an induction assembly and temperature probes with different sizes and shapes, the induction assembly comprises a heat-conducting shell, a temperature sensor and an electronic wire, the shell is provided with a cavity with a backward opening, the temperature sensor is arranged at the front end of the cavity, and the electronic wire is arranged in the cavity. The front portion of the electronic wire is fixed in the cavity in a sealed mode, the front end of the electronic wire is in electric signal connection with the temperature sensor, and the temperature probe is detachably arranged at the front end of the shell. According to the temperature measuring device, the temperature probes of different sizes and shapes can be replaced to be selectively installed on the equipment, the temperature measuring device can better adapt to sparking plugs of different models and installation positions, the damage risk of the probes is avoided, the service life is prolonged, and the accuracy of temperature detection is correspondingly improved.

Description

Technical Field

[0001] The utility model relates to a temperature measuring device with a replaceable temperature probe Background Art

[0002] Currently, thermometers are widely used in various equipment and products with spark plugs. These include motorcycles, chainsaws, motorboats, and engineering equipment, primarily for testing the spark plug temperatures of gasoline engines within these devices. However, most common thermometers on the market are fixed and cannot be replaced once installed. Furthermore, the probes are often epoxy-encapsulated or suspended in the air, leading to significant data errors, slow response, and inaccurate temperature measurements. Furthermore, due to limited space for spark plugs, the probes must be bent to install, damaging them. Furthermore, on equipment operating in harsh environments, this can lead to inaccurate readings or even probe breakage. Utility Model Content

[0003] The technical problem to be solved by the present invention is to provide a temperature measuring device that can be used for various spark plugs in response to the above-mentioned existing technology. Temperature probes of different sizes and shapes can be replaced and used according to the differences in spark plug models and installation positions to achieve convenient installation, ensure the accuracy of detection results, and at the same time increase the service life of the temperature measuring device.

[0004] The technical solution adopted by the utility model to solve the above technical problems is: a temperature measuring device with a replaceable temperature probe, including a sensing component and temperature probes of different sizes and shapes, characterized in that: the sensing component includes a heat-conductive shell, a temperature sensor, and an electronic wire, the shell has a cavity opening backward, the temperature sensor is arranged at the front end of the cavity, the front part of the electronic wire is sealed and fixed in the cavity, and the front end of the electronic wire is electrically connected to the temperature sensor signal, and the temperature probe is detachable and arranged at the front end of the shell.

[0005] In order to improve the temperature detection accuracy, the temperature sensor is wrapped with a Teflon ultra-thin wall tube.

[0006] In order to improve the temperature detection accuracy, the cavity corresponding to the periphery of the temperature sensor is filled with quartz sand.

[0007] In order to ensure the sealing and waterproofness of the electronic wire and the temperature sensor in the cavity and facilitate assembly, the rear part of the cavity is filled with epoxy resin around the periphery of the electronic wire.

[0008] Preferably, the shell is a copper alloy shell.

[0009] In order to ensure the firmness of the electronic wire installation in the shell and avoid the wire coming off due to pulling, at least one set of screw holes is relatively opened on the middle part of the shell corresponding to the electronic wire area, and an extrusion piece is screwed into the screw hole.

[0010] Preferably, the rear end of the electronic wire is electrically connected to a waterproof socket.

[0011] Optionally, a fixing portion is provided at the front of the shell inwardly along the radial direction, a thread is provided on the outer circumferential surface of the fixing portion, the temperature probe is sleeved outside the fixing portion, a fixing nut is threadedly connected to the fixing portion from the front of the temperature probe, and the fixing nut presses the temperature probe to the fixing portion through a spring washer.

[0012] Optionally, a fixing portion is provided inwardly along the radial direction at the front portion of the shell, a thread is provided on the outer circumference of the fixing portion, a connecting nut is fixedly provided on the temperature probe, and the connecting nut is threadedly connected to the fixing portion.

[0013] Preferably, a spring washer is provided between the connecting nut and the end surface of the fixing portion.

[0014] Compared with the existing technology, the advantages of the present invention are: the temperature measuring device in the present invention can replace temperature probes of different sizes and shapes and choose to install them on the equipment, which can better adapt to spark plugs of different models and installation positions, avoid the risk of probe damage, extend the service life, and correspondingly improve the accuracy of temperature detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a three-dimensional diagram of a temperature measuring device that includes a first temperature probe and a first replaceable temperature probe with a detachable structure in an embodiment of the present utility model.

[0016] Figure 2 for Figure 1 sectional view of .

[0017] Figure 3 for Figure 1 Cutaway view of another section.

[0018] Figure 4 for Figure 1 Exploded diagram of .

[0019] Figure 5 This is a three-dimensional diagram of a temperature measuring device in which the second temperature probe is equipped with a first replaceable temperature probe with a detachable structure in an embodiment of the present utility model.

[0020] Figure 6 This is a three-dimensional diagram of a temperature measuring device that combines the third temperature probe with the second replaceable temperature probe with a detachable structure in an embodiment of the present invention.

[0021] Figure 7 for Figure 6 sectional view of .

[0022] Figure 8 for Figure 6 3D exploded view of .

[0023] Figure 9 This is a three-dimensional diagram of a temperature measuring device that includes the fourth temperature probe and the second replaceable temperature probe with a detachable structure in an embodiment of the present invention.

[0024] Figure 10 for Figure 9 sectional view of . DETAILED DESCRIPTION

[0025] The present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

[0026] like Figures 1 to 10 As shown, the temperature measuring device with a replaceable temperature probe in this embodiment includes a sensing assembly 100 and a temperature probe 200. The temperature probe 200 can be of various types, with varying sizes and shapes, and can be detachably mounted on the sensing assembly 100. In this embodiment, the temperature sensing portion of the temperature probe 200 is bent 90° relative to the fixed portion or positioned on the same horizontal plane. Of course, various shapes of temperature probes 200 can be employed depending on the installation environment.

[0027] The sensing assembly 100 includes a heat-conducting housing 1, a temperature sensor 2, and an electronic wire 3, which can be used to secure the temperature sensor 2 and the electronic wire 3. To effectively conduct heat and ensure more accurate temperature data detected by the temperature sensor 2, the housing 1 can be made of metal. For example, the housing 1 in this embodiment is made of a copper alloy. Copper alloys have good thermal conductivity and can improve the accuracy of temperature detection.

[0028] The housing 1 has a rearwardly open cavity 11. The temperature sensor 2 is disposed at the front end of the cavity 11. The front end of the electronic wire 3 is sealed and fixed within the cavity 11, and the front end of the electronic wire 3 is electrically connected to the temperature sensor 2. To ensure the sealing and waterproofing of the electronic wire 3 and temperature sensor 2 within the cavity 11 and to facilitate assembly, the rear portion of the cavity 11 is filled with epoxy resin 6 around the outer periphery of the electronic wire 3.

[0029] During operation, the electronic wire 3 transmits the temperature data detected by the temperature sensor 2 to the electronic module for data processing. To facilitate the external connection of the electronic wire 3, the rear end of the electronic wire 3 in this embodiment is electrically connected to a waterproof socket 8, which increases the assembly speed of the connection of the electronic wire 3.

[0030] Various temperature probes 200 are removably mounted on the front end of the housing 1. During use, a different temperature probe 200 can be selected based on the model and installation location of the spark plug to be measured. This ensures that the temperature measuring device, once fixed at the desired location, can effectively contact the spark plug's temperature measurement location. The temperature probe 200 does not need to be bent, thus preventing breakage and extending its service life. The temperature probe 200 in this embodiment is a sheet metal structure that effectively conducts heat from the spark plug's temperature measurement location to the housing 1, where it is then detected by the temperature sensor 2 to obtain the measured temperature.

[0031] To improve temperature detection accuracy, temperature sensor 2 is wrapped with an ultra-thin Teflon tube 4. Furthermore, to further enhance temperature detection accuracy, cavity 11 is filled with quartz sand 5, corresponding to the periphery of temperature sensor 2. Using temperature sensor 2 as a device monitor, quartz sand 5 and ultra-thin Teflon tube 4 are introduced into housing 1 as conductive materials, enabling more accurate measurement of the temperature signal generated by the engine spark plug during operation.

[0032] In order to ensure the secure installation of the electronic wire 3 in the housing 1 and prevent it from being pulled off, at least one set of screw holes 12 are relatively opened in the middle of the housing 1 corresponding to the area of ​​the electronic wire 3. An extrusion piece 7 is screwed into the screw hole 12. During assembly, the extrusion piece 7 is screwed into the screw hole 12, squeezing the electronic wire 3 in the housing 1 from the opposite direction, thereby firmly fixing the electronic wire 3 in the housing 1.

[0033] In addition, this embodiment provides two detachable structures of the temperature probe 200, as detailed below: Of course, the temperature probe 200 can also be fixed on the housing 1 by other existing detachable structures.

[0034] like Figures 1 to 5 As shown, the first detachable structure is as follows: a fixing portion 13 is provided at the front of the housing 1 along the radial inward direction, and a thread is provided on the outer circumferential surface of the fixing portion 13. The temperature probe 200 is sleeved outside the fixing portion 13. A fixing nut 131 is screwed on the fixing portion 13 from the front of the temperature probe 200. The fixing nut 131 presses and fixes the temperature probe 200 on the fixing portion 13 through the spring washer 9.

[0035] like Figures 6 to 10 As shown, the first detachable structure is as follows: a fixing portion 13 is provided radially inwardly on the front portion of the housing 1. The outer circumference of the fixing portion 13 is provided with threads. A connecting nut 132 is fixed to the temperature probe 200 and is threadedly connected to the fixing portion 13. In addition, a spring washer 9 is provided between the connecting nut 132 and the end surface of the fixing portion 13.

[0036] The above two detachable structures can achieve the purpose of rapid replacement and installation of temperature sugar lotus roots, and users can then replace and install them according to the specific installation environment.

[0037] The temperature measuring device of the present invention can be installed on the equipment with interchangeable temperature probes 200 of various sizes and shapes, enabling better adaptation to spark plugs of varying sizes and installation locations, thereby reducing the risk of probe damage, extending service life, and improving temperature detection accuracy. The temperature measuring device can also record the continuous operating status of the engine spark plugs, providing maintenance reminders and ensuring optimal equipment operation.

[0038] In the specification and claims of the present invention, directional terms such as "front," "back," "up," "down," "left," "right," "side," "top," and "bottom" are used to describe various exemplary structural parts and elements of the present invention. However, these terms are used herein for convenience of description only and are based on the exemplary orientations shown in the accompanying drawings. Since the embodiments disclosed herein can be arranged in different orientations, these directional terms are intended for illustrative purposes only and should not be construed as limiting. For example, "up" and "down" are not necessarily limited to directions opposite to or consistent with the direction of gravity.

Claims

1. A temperature measuring device with a replaceable temperature probe, comprising a sensing component (100) and temperature probes (200) of different sizes and shapes, characterized in that: The sensing component (100) comprises a heat-conducting housing (1), a temperature sensor (2), and an electronic wire (3); the housing (1) has a cavity (11) that opens rearward; the temperature sensor (2) is arranged at the front end of the cavity (11); the front portion of the electronic wire (3) is sealed and fixed in the cavity (11); the front end of the electronic wire (3) is electrically connected to the temperature sensor (2); and the temperature probe (200) is detachably arranged at the front end of the housing (1).

2. The temperature measuring device with a replaceable temperature probe according to claim 1, characterized in that: The temperature sensor (2) is wrapped with a Teflon ultra-thin wall tube (4).

3. The temperature measuring device with a replaceable temperature probe according to claim 1, characterized in that: The cavity (11) is filled with quartz sand (5) corresponding to the outer periphery of the temperature sensor (2).

4. The temperature measuring device with a replaceable temperature probe according to claim 1, characterized in that: The rear portion of the cavity (11) is filled with epoxy resin (6) around the periphery of the electron wire (3).

5. The temperature measuring device with a replaceable temperature probe according to claim 1, characterized in that: The shell (1) is a copper alloy shell.

6. The temperature measuring device with a replaceable temperature probe according to claim 1, characterized in that: At least one set of screw holes (12) is relatively opened in the middle of the housing (1) corresponding to the area of ​​the electronic wire (3), and an extrusion piece (7) is screwed into the screw hole (12).

7. The temperature measuring device with a replaceable temperature probe according to claim 1, characterized in that: The rear end of the electronic wire (3) is electrically connected to a waterproof socket (8).

8. The temperature measuring device with a replaceable temperature probe according to any one of claims 1 to 7, characterized in that: The front portion of the housing (1) is provided with a fixing portion (13) which is radially inwardly contracted. The outer peripheral surface of the fixing portion (13) is provided with a thread. The temperature probe (200) is sleeved outside the fixing portion (13). A fixing nut (131) is screwed onto the fixing portion (13) from the front portion of the temperature probe (200). The fixing nut (131) presses and fixes the temperature probe (200) on the fixing portion (13) via a spring washer (9).

9. The temperature measuring device with a replaceable temperature probe according to any one of claims 1 to 7, characterized in that: A fixing portion (13) is provided at the front of the housing (1) inwardly along the radial direction, and a thread is provided on the outer peripheral surface of the fixing portion (13). A connecting nut (132) is fixedly provided on the temperature probe (200), and the connecting nut (132) is screwed onto the fixing portion (13).

10. The temperature measuring device with a replaceable temperature probe according to claim 9, characterized in that: A spring washer (9) is provided between the connecting nut (132) and the end surface of the fixing portion (13).

Images