A platinum thermal resistance sensor

Abstract

The present application provides a platinum thermal resistor sensor, comprising a sensing probe, a main body, and a wire extending from the main body; the sensing probe extends from the top of the main body in a direction away from the main body; it also comprises a mounting ear arranged on the side of the main body and a wire harness arranged at the bottom of the main body; the wire extends from the main body and then leads out through the wire harness; the wire harness is configured to receive and constrain at least part of the wire; the length of the wire in the wire harness is adjustable. Through the wire harness at the bottom of the sensor body, the overlong wire can be received and constrained, avoiding the overlong wire being exposed to the outside and affecting the appearance; because the side wall of the wire harness is inclined toward the center, the wire can slide along the side wall when being pulled to adjust the length of the wire in the wire harness, thereby providing a longer length for the wire outside the outlet, avoiding the wire being pulled and disconnected due to being too short.

Description

Technical Field

[0001] The present application relates to a sensor, and in particular to a platinum thermal resistor sensor. Background Art

[0002] The platinum resistance thermometer is a common temperature sensor that measures temperature by using the change in resistance of a platinum resistance thermometer when the temperature changes. It is usually made of extremely high-purity platinum wire, placed in an insulator, and connected to the measuring instrument through a wire. Platinum resistance thermometers have the advantages of high precision, good stability, and fast response speed, and have been widely used in industrial automation, scientific research, medical equipment and other fields. The wires that come with the sensor are usually longer to adapt to different usage scenarios. In actual use, the overlong wires are usually cut off. Because the user's estimate is not accurate, the wires may still be too long after cutting, and the redundant wires need to be fixed with additional ties or tapes, making the wiring harness messy and unsightly. If the wire is too short after cutting, it is necessary to straighten the wire to ensure that the sensor can be connected to the circuit. Pulling the wire increases the risk of breaking the circuit. Summary of the invention

[0003] The present application provides a platinum thermal resistor sensor, which can store and constrain part of the wires so that the wires do not need to be trimmed and can be applied to different installation environments.

[0004] Specifically, the present application provides a platinum resistance thermometer sensor, comprising a sensing probe, a main body and a wire extending from the main body; the sensing probe extends from the top of the main body in a direction away from the main body; it also includes mounting ears arranged on the side of the main body and a wire harness device arranged at the bottom of the main body; the wire extends out of the main body and is led out through the wire harness device; the wire harness device is configured to accommodate and constrain at least part of the wire; the length of the wire in the wire harness device is adjustable.

[0005] Furthermore, the wire harness device includes a wire lead hole, an annular wire groove and a wire outlet; the annular wire groove surrounds the wire lead hole and is connected to the wire lead hole; the wire outlet is located outside the annular wire groove and is connected to the annular wire groove.

[0006] Furthermore, the annular wire groove has a bottom wall, a side wall and an opening; when viewed in a direction perpendicular to the extension direction of the sensing probe, the side wall of the annular wire groove is inclined toward the lead-in hole.

[0007] Furthermore, the wire harness device includes a plurality of annular wire troughs and a plurality of wire outlets; each of the annular wire troughs is connected to a plurality of wire outlets.

[0008] Furthermore, the wiring harness device is integrally formed with the main body.

[0009] Furthermore, the mounting ears are symmetrically arranged on the side of the main body; and each of the mounting ears is provided with a through hole.

[0010] The beneficial effects of the present application are as follows: through the wiring harness device at the bottom of the sensor body, excessively long wires can be stored and restrained, avoiding the excessively long wires being exposed and affecting the appearance; because the side walls of the wiring harness device are inclined toward the center, the wires can slide along the side walls when they are pulled to adjust the length of the wires in the wiring harness device, thereby providing a longer length for the wires outside the wire outlet, avoiding the wires being pulled and broken due to being too short; on the other hand, because the wiring harness device can store some of the wires, the length of the wires stored in the wiring harness device can be changed to adapt to different installation positions, avoiding the operation of trimming the wires. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the structure of the platinum thermal resistance sensor of the present application;

[0012] Figure 2 is a schematic diagram of the cross-sectional structure of the wire harness device;

[0013] Figure 3 It is a schematic diagram of the bottom structure of the wiring harness device;

[0014] Figure 4 It is a schematic diagram of the direction of wire lead-out;

[0015] Figure 5 This is another schematic diagram of the wire lead-out direction;

[0016] Figure 6 This is another schematic diagram of the direction of wire lead-out;

[0017] Reference numerals: 100, sensing probe; 200, main body; 210, mounting ear; 220, wire harness device; 221, wire lead hole; 222, annular wire groove; 223, wire outlet; 300, wire. DETAILED DESCRIPTION

[0018] Here, exemplary embodiments will be described in detail, and examples thereof are shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application.

[0019] The terms used in this application are only for the purpose of describing specific embodiments and are not intended to limit this application. Unless otherwise defined, the technical terms or scientific terms used in this application should be understood by people with ordinary skills in the field to which the present invention belongs. The "first", "second" and similar words used in this application do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, similar words such as "one" or "one" do not indicate a quantity limit, but indicate that there is at least one. "Multiple" or "several" means two and more than two. Unless otherwise specified, similar words such as "front", "rear", "lower" and / or "upper" are only for the convenience of explanation and are not limited to a position or a spatial orientation. Similar words such as "include" or "include" mean that the elements or objects appearing in front of "include" or "include" include the elements or objects listed after "include" or "include" and their equivalents, and do not exclude other elements or objects. Similar words such as "connect" or "connected" are not limited to physical or mechanical connections, and can include electrical connections, whether direct or indirect. The singular forms "a", "said" and "the" used in this specification and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0020] Please combine Figures 1 to 6 The present application provides a platinum thermal resistor sensor, comprising a sensing probe 100, a main body 200 and a wire 300 extending from the main body 200; the sensing probe 100 extends from the top of the main body 200 in a direction away from the main body 200; it also comprises a mounting ear 210 provided on the side of the main body 200 and a wire harness device provided at the bottom of the main body 210; the mounting ears 2100 are symmetrically arranged on the side of the main body 200; each of the mounting ears 210 is provided with a through hole, and the sensor is installed by passing a screw through the mounting ear 210. The wire 300 extends from the main body 100 and is led out through the wire harness device 220; the wire harness device 220 is configured to receive and constrain at least part of the wire 300; the length of the wire 300 in the wire harness device 220 is adjustable. In actual use, there is no need to trim the wire 300 to the length exactly required in the circuit. A portion of the length can be reserved and stored in the wiring harness device 200 to avoid the problem of the wire 300 being too short due to estimation errors and to avoid breaking the circuit due to pulling the wire.

[0021] On the basis of the above, if Figure 2 and Figure 3As shown, the wire harness device 220 includes a lead-in hole 221, an annular wire groove 222 and a wire outlet 223; the annular wire groove 222 surrounds the lead-in hole 221 and is in communication with the lead-in hole 221; the wire outlet 223 is located outside the annular wire groove 222 and is in communication with the annular wire groove 222. The wire harness device 220 in this embodiment has three annular wire grooves 222 and three wire outlets 223; the three annular wire grooves 222 are concentrically arranged and the radius increases accordingly, and after the wire 300 extends from the body 200 and passes through the lead-in hole 221, it can be routed along any annular wire groove 222 or from the inside to the outside along two or three annular wire grooves 222, and finally led out along the wire outlet 223. In this embodiment, the three outlets 223 are arranged at 90° intervals, and each annular wire groove 222 is connected to the three outlets 223, that is, the wire 300 can be selected to be led out from the outlet 223 in any direction in any annular wire groove 222, so that the sensor can select a relatively suitable wiring path in any installation environment. In other embodiments, the number of annular wire grooves 222 can be four or more, or the annular wire grooves 222 are spiral.

[0022] On the basis of the above, if Figure 2 As shown, the annular wire groove 222 has a bottom wall, a side wall and an opening; when viewed in a direction perpendicular to the extension direction of the sensing probe 100, the side wall of the annular wire groove 222 is inclined toward the lead hole 221. When the wire 300 is wound in the annular wire groove 222, the wire 300 is biased toward the opening of the annular wire groove 222. When a section of the wire 300 extending out of the wire harness device 220 is pulled, the wire 300 will slide along the side wall of the annular wire groove 220 toward the bottom wall, thereby providing a longer length for the external wire 300. At the same time, since the wire 300 is arranged in a ring, it is not easy to break when pulled, which can avoid circuit breakage caused by pulling and ensure reliability.

[0023] The wire harness device 220 in this embodiment is integrally formed with the main body 200 and is directly formed by an injection molding process. In other embodiments, the wire harness device 220 and the main body 200 may also be a split structure, and the two are fixedly connected by buckles or screws.

[0024] The above is only a preferred embodiment of the present application and does not constitute any form of limitation to the present application. Although the present application has been disclosed as a preferred embodiment as above, it is not intended to limit the present application. Any technician familiar with the profession can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present application. However, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present application without departing from the content of the technical solution of the present application still falls within the scope of the technical solution of the present application.

Claims

1. A platinum thermal resistance sensor, characterized in that: It includes a sensing probe, a main body and a wire extending from the main body; the sensing probe extends from the top of the main body in a direction away from the main body; it also includes mounting ears arranged on the side of the main body and a wire harness device arranged at the bottom of the main body; the wire extends from the main body and then is led out through the wire harness device; the wire harness device is configured to receive and constrain at least part of the wire; the length of the wire in the wire harness device is adjustable.

2. A platinum thermal resistance sensor according to claim 1, characterized in that: The wire harness device comprises a wire lead-in hole, an annular wire groove and a wire outlet; the annular wire groove surrounds the wire lead-in hole and is in communication with the wire lead-in hole; the wire outlet is located outside the annular wire groove and is in communication with the annular wire groove.

3. A platinum thermal resistance sensor according to claim 2, characterized in that: The annular wire trough has a bottom wall, a side wall and an opening; When viewed in a direction perpendicular to the extension direction of the sensing probe, the side wall of the annular wire groove is inclined toward the lead-in hole.

4. A platinum thermal resistance sensor according to claim 2, characterized in that: The wire harness device comprises a plurality of annular wire troughs and a plurality of wire outlets; each of the annular wire troughs is in communication with a plurality of wire outlets.

5. The platinum thermal resistance sensor according to claim 1, characterized in that: The wire harness device is integrally formed with the main body.

6. The platinum thermal resistance sensor according to claim 1, characterized in that: The mounting ears are symmetrically arranged on the side of the main body; each of the mounting ears is provided with a through hole.

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