Armored thermal resistor lead structure

Abstract

The utility model relates to a lead structure of an armored thermal resistor, which is characterized in that a driven assembly is driven to be further inserted into a positioning assembly through relative displacement generated when a bearing piece is connected with a junction box of the armored thermal resistor, and the synchronous driven assembly can drive a sealing assembly to be further inserted into the positioning assembly; and in the process, due to the fact that the positioning assembly extrudes the sealing assembly, the sealing size in the sealing assembly can be reduced until the sealing assembly stably seals the electric wire penetrating through the middle of the sealing assembly, the sealing assembly can seal the electric wires of different sizes, and the applicability is wider.

Description

Technical Field

[0001] The present application relates to the technical field of thermal armored thermal resistors, and in particular to a lead wire structure of an armored thermal resistor. Background Art

[0002] Thermal resistors are commonly used temperature measuring elements in temperature measuring instruments. They directly measure temperature and convert temperature signals into thermoelectric potential signals, which are then converted into the temperature of the measured medium through electrical instruments (secondary instruments). The appearance of various thermal resistors is often very different due to needs, but their basic structure is roughly the same. They are usually composed of main parts such as thermoelectrodes, insulating sleeve protection tubes and junction boxes, and are usually used in conjunction with display instruments, recording instruments and electronic regulators.

[0003] The lead structure of the existing thermal resistor junction box is used to seal the joint between the wire and the junction box. However, the existing lead structure has a poor sealing effect and cannot be used for wires of different diameters, resulting in wires of different specifications needing to be installed using lead structures of different specifications to match. Utility Model Content

[0004] Based on this, it is necessary to provide an armored thermal resistor lead structure to address the problem that the traditional existing lead structure has poor sealing effect and cannot be used for wires of different diameters, resulting in wires of different specifications needing to be installed and matched using lead structures of different specifications.

[0005] The present application provides an armored thermal resistor lead structure, comprising:

[0006] The receiving piece is set to be cylindrical and is threadedly connected to the junction box of the armored thermal resistor;

[0007] A positioning assembly, the receiving member is sleeved on the positioning assembly, and the receiving member is rotatably connected to the positioning assembly;

[0008] A sealing component, one end of which is inserted into the positioning component, and the other end of which is suspended in the air, and one end of which is inserted into the positioning component butts against the positioning component, and when the armored thermal resistor lead structure is in use, the sealing component and the positioning component are slidably matched to adjust the sealing performance of the sealing component;

[0009] The driven component is sleeved on the sealing component, one end of the driven component is fixedly connected to the suspended end of the sealing component, and the other end of the driven component is inserted into the positioning component.

[0010] The present application relates to an armored thermal resistor lead structure, which drives a driven component to be further inserted into a positioning component through relative displacement when a receiving component is connected to a junction box of the armored thermal resistor, and the synchronous driven component drives a sealing component to be further inserted into the positioning component. During this process, the sealing size inside the sealing component becomes smaller due to the squeezing of the sealing component by the positioning component until the sealing component stably seals the wire passing through the middle of the sealing component. The sealing component can seal wires of different sizes and has a wider applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 A schematic diagram of the structure of an armored thermal resistor lead structure provided in one embodiment of the present application.

[0012] Figure 2 A schematic diagram of the connection relationship between the receiving member and the positioning assembly of the armored thermal resistor lead structure provided in one embodiment of the present application.

[0013] Figure 3 A schematic diagram of the connection relationship between the positioning component and the sealing component in the armored thermal resistor lead structure provided in one embodiment of the present application.

[0014] Figure 4 This is a schematic diagram of the structure of the armored thermal resistor lead structure after removing the receiving piece provided in one embodiment of the present application.

[0015] Reference numerals:

[0016] 11. receiving member; 12. positioning assembly; 121. first positioning cylinder; 121a. limiting hole;

[0017] 122, second positioning cylinder; 122a, positioning portion; 122b, connecting portion; 13, sealing assembly;

[0018] 131, first support tube; 131a, first limiting groove; 132, first limiting ring;

[0019] 133, first sealing ring; 14, driven assembly; 141, first driven disk; 142, limiting rod;

[0020] 143, return spring; 15, first limit block; 16, annular sealing chamber; 17, second limit groove;

[0021] 18. Second limiting ring. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0023] like Figure 1 As shown, in one embodiment of the present application, the armored thermal resistor lead structure includes a receiving component 11, a positioning component 12, a sealing component 13 and a driven component 14.

[0024] The receiving member 11 is cylindrical and is threadedly connected to the junction box of the armored thermal resistor.

[0025] The receiving member 11 is sleeved on the positioning assembly 12. The receiving member 11 is rotatably connected to the positioning assembly 12.

[0026] One end of the sealing component 13 is inserted into the positioning component 12. The other end of the sealing component 13 is suspended. One end of the sealing component 13 inserted into the positioning component 12 abuts against the positioning component 12. When the armored thermal resistor lead structure is in use, the sealing component 13 and the positioning component 12 are slidably matched to adjust the sealing performance of the sealing component 13.

[0027] The driven component 14 is sleeved on the sealing component 13. One end of the driven component 14 is fixedly connected to the suspended end of the sealing component 13. The other end of the driven component 14 is inserted into the positioning component 12.

[0028] Specifically, the receiving member 11 is sleeved on the positioning assembly 12, and the receiving member 11 is rotationally connected to the positioning assembly 12 while maintaining a seal, a portion of the sealing assembly 13 is inserted into the positioning assembly 12, and the sealing assembly 13 and the positioning assembly 12 are slidingly matched while maintaining a seal, the portion of the sealing assembly 13 inserted into the positioning assembly 12 abuts against the positioning assembly 12, and the suspended portion of the sealing assembly 13 is fixedly connected to the driven assembly 14, and the driven assembly 14 is slidably inserted into the positioning assembly 12.

[0029] In this embodiment, the relative displacement between the receiving member 11 and the junction box of the armored thermal resistor is used to drive the driven component 14 to be further inserted into the positioning component 12. The synchronous driven component 14 will drive the sealing component 13 to be further inserted into the positioning component 12. In this process, the sealing size inside the sealing component 13 will become smaller due to the squeezing of the sealing component 13 by the positioning component 12 until the sealing component 13 can stably seal the wires passing through the middle of the sealing component 13. The sealing component 13 can seal wires of different sizes and has a wider applicability.

[0030] like Figure 2 As shown, in one embodiment of the present application, the sealing assembly 13 includes a first support tube 131 , a plurality of first limiting rings 132 and a plurality of first sealing rings 133 .

[0031] One end of the first support tube 131 is inserted into the positioning assembly 12. The other end of the first support tube 131 is suspended.

[0032] The first limiting rings 132 are provided in plurality. The first limiting rings 132 are slidably connected to the inner wall of the first supporting tube 131. The first limiting rings 132 are arranged at equal intervals along the axis direction of the first supporting tube 131.

[0033] The first sealing ring 133 is provided in a plurality. The first sealing ring 133 is provided in the first support tube 131. A first sealing ring 133 is provided between two adjacent first limiting rings 132. One end of the first sealing ring 133 is fixedly connected to one first limiting ring 132. The other end of the first sealing ring 133 is fixedly connected to another first limiting ring 132.

[0034] In this embodiment, the first sealing ring 133 is made of rubber material. A plurality of slidable first limiting rings 132 are arranged on the first supporting tube 131, and a first sealing ring 133 is arranged between two adjacent first limiting rings 132. The shape of the first sealing ring 133 is changed by relative sliding between the first supporting tubes 131, thereby forming a plurality of annular extrusion rings with variable shapes, and applying multi-stage pressurization to the surface of the wire passing through the sealing assembly 13, thereby improving the surface sealing performance of the wire.

[0035] like Figure 2 and Figure 3 As shown, in one embodiment of the present application, a plurality of first limiting grooves 131a are provided on the inner wall of the first support tube 131. A plurality of first limiting blocks 15 are fixed on the outer circumferential surface of the first limiting ring 132. The number of the first limiting grooves 131a is the same as the number of the first limiting blocks 15. Each of the first limiting blocks 15 is slidably connected to one of the first limiting grooves 131a.

[0036] In this embodiment, the sliding directions of the plurality of first limiting rings 132 are unified by providing a plurality of first limiting grooves 131 a , thereby improving the synchronization of the deformation of each first sealing ring 133 .

[0037] like Figure 2 As shown, in one embodiment of the present application, a plurality of the first limiting rings 132 and a plurality of the first sealing rings 133 divide the interior of the first support cylinder 131 into a plurality of annular sealing chambers 16. The pressure in each of the annular sealing chambers 16 is the same.

[0038] In this embodiment, the pressure in the annular sealing cavity 16 is changed by moving the first limiting ring 132, thereby changing the shape of the first sealing ring 133. At the same time, the conductivity of the pressure and the fact that the pressure in each annular sealing cavity 16 is the same in the initial state are utilized, so that when a first limiting ring 132 at one end moves, the pressure in each annular sealing cavity 16 tends to be the same, thereby making the deformation state of each first sealing ring 133 the same.

[0039] like Figure 2 As shown, in one embodiment of the present application, the positioning assembly 12 includes a first positioning cylinder 121 and a second positioning cylinder 122 .

[0040] The first positioning tube 121 is rotatably connected to the inner wall of the receiving member 11. The first supporting tube 131 is inserted into the first positioning tube 121.

[0041] The second positioning tube 122 is disposed in the first positioning tube 121. One end of the second positioning tube 122 is fixedly connected to the first positioning tube 121. The other end of the second positioning tube 122 abuts against one of the first limiting rings 132.

[0042] In this embodiment, one end of the second positioning cylinder 122 fixed in the first positioning cylinder 121 presses against the first limiting ring 132 so that the first limiting ring 132 and the first supporting cylinder 131 move relative to each other when the first supporting cylinder 131 is gradually inserted into the first positioning cylinder 121 .

[0043] like Figure 3 As shown, in one embodiment of the present application, the driven assembly 14 includes a first driven disk 141 , a plurality of limiting rods 142 and a plurality of return springs 143 .

[0044] The first driven disk 141 is disposed close to the suspended side of the first supporting tube 131. The first driven disk 141 is sleeved on the first supporting tube 131. The first driven disk 141 is fixedly connected to the first supporting tube 131.

[0045] The limiting rods 142 are provided in a plurality. The limiting rods 142 are provided on a side of the first driven disk 141 close to the first positioning cylinder 121. The limiting rods 142 are arranged at equal intervals along the circumferential direction of the first driven disk 141. One end of the limiting rod 142 is fixedly connected to the first driven disk 141. The other end of the limiting rod 142 is inserted into the first positioning cylinder 121.

[0046] The return spring 143 is provided in a plurality. The number of the return springs 143 is the same as the number of the limit rods 142. Each limit rod 142 is provided with a corresponding return spring 143. The return spring 143 is provided in the first positioning cylinder 121. One end of the return spring 143 is fixedly connected to the limit rod 142. The other end of the return spring 143 is fixedly connected to the first positioning cylinder 121.

[0047] In this embodiment, the first driven disk 141 drives the first support cylinder 131 to move so as to adjust the sealing of wires of different sizes. At the same time, the reset spring 143 helps the first driven disk 141 to reset while also helping the entire sealing assembly 13 to reset through the first driven disk 141.

[0048] like Figure 3 As shown, in one embodiment of the present application, the first support tube 131 is disposed between the plurality of limiting rods 142 .

[0049] like Figure 3 As shown, in one embodiment of the present application, a plurality of limiting holes 121a are formed on the first positioning cylinder 121. The number of the limiting holes 121a is the same as the number of the limiting rods 142. Each limiting rod 142 is inserted into one of the limiting holes 121a.

[0050] In this embodiment, the limiting hole 121 a is provided on the first positioning tube 121 to increase the stability of the first driven disk 141 during movement.

[0051] like Figure 3 As shown, in one embodiment of the present application, the second positioning tube 122 includes a positioning portion 122a and a connecting portion 122b.

[0052] The positioning portion 122a is disposed in the first positioning tube 121. One end of the positioning portion 122a abuts against one of the first limiting rings 132. The other end of the positioning portion 122a is suspended.

[0053] The connecting portion 122b is fixedly connected to the positioning portion 122a. The first positioning tube 121 is connected to the positioning portion 122a via the connecting portion 122b.

[0054] In this embodiment, the positioning portion 122a only abuts against the first limiting ring 132 and does not contact the first supporting tube 131, so that when the first supporting tube 131 slides relative to the first positioning tube 121, the first limiting ring 132 abutting against the positioning portion 122a does not move, and the first supporting tube 131 drives other first limiting rings 132 to move so that the pressure in each annular sealing chamber 16 changes.

[0055] like Figure 3 and Figure 4 As shown, in one embodiment of the present application, an annular second limiting groove 17 is formed on the outer circumferential surface of the first positioning cylinder 121. A second limiting ring 18 is fixed on the inner wall of the receiving member 11. The second limiting ring 18 is rotatably connected to the second limiting groove 17.

[0056] In this embodiment, the socket 11 is rotatably connected to the first positioning cylinder 121, and the socket 11 is connected to the terminal box of the armored thermal resistor through a thread, so that the rotation of the socket 11 when connected to the terminal box of the armored thermal resistor will not interfere with the sealing cooperation between the positioning assembly 12, the sealing assembly 13 and the driven assembly 14.

[0057] The technical features of the above-described embodiments may be arbitrarily combined, and the execution order of the method steps is not limited. To make the description concise, not all possible combinations of the technical features in the above-described 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.

[0058] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the present application. It should be noted that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. An armored thermal resistor lead structure, characterized in that: The armored thermal resistor lead wire structure comprises: The receiving piece is set to be cylindrical and is threadedly connected to the junction box of the armored thermal resistor; A positioning assembly, the receiving member is sleeved on the positioning assembly, and the receiving member is rotatably connected to the positioning assembly; A sealing component, one end of which is inserted into the positioning component, and the other end of which is suspended in the air, and one end of which is inserted into the positioning component butts against the positioning component, and when the armored thermal resistor lead structure is in use, the sealing component and the positioning component are slidably matched to adjust the sealing performance of the sealing component; The driven component is sleeved on the sealing component, one end of the driven component is fixedly connected to the suspended end of the sealing component, and the other end of the driven component is inserted into the positioning component.

2. The armored thermal resistor lead structure according to claim 1, characterized in that: The sealing assembly comprises: A first supporting tube, one end of which is inserted into the positioning assembly, and the other end of which is suspended in the air; A plurality of first limiting rings are provided, wherein the first limiting rings are slidably connected to the inner wall of the first supporting tube, and the first limiting rings are arranged at equal intervals along the axis direction of the first supporting tube; The first sealing ring is provided in a plurality, wherein the first sealing ring is provided in the first supporting tube, a first sealing ring is provided between two adjacent first limiting rings, one end of the first sealing ring is fixedly connected to one first limiting ring, and the other end of the first sealing ring is fixedly connected to another first limiting ring.

3. The armored thermal resistor lead wire structure according to claim 2, characterized in that: A plurality of first limiting grooves are provided on the inner wall of the first supporting tube, a plurality of first limiting blocks are fixed on the outer circumferential surface of the first limiting ring, the number of the first limiting grooves is the same as the number of the first limiting blocks, and each first limiting block is slidably connected to a first limiting groove.

4. The armored thermal resistor lead structure according to claim 3, characterized in that: The plurality of first limiting rings and the plurality of first sealing rings divide the interior of the first support tube into a plurality of annular sealing chambers, and the pressure in each of the annular sealing chambers is the same.

5. The armored thermal resistor lead wire structure according to claim 4, characterized in that: The positioning component comprises: A first positioning cylinder is rotatably connected to the inner wall of the receiving member, and the first supporting cylinder is inserted into the first positioning cylinder; The second positioning tube is arranged in the first positioning tube, one end of the second positioning tube is fixedly connected to the first positioning tube, and the other end of the second positioning tube abuts against one of the first limiting rings.

6. The armored thermal resistor lead wire structure according to claim 5, characterized in that: The driven component comprises: A first driven disk is arranged close to a suspended side of the first supporting tube, the first driven disk is sleeved on the first supporting tube, and the first driven disk is fixedly connected to the first supporting tube; A plurality of limit rods are provided, each of which is provided on a side of the first driven disk close to the first positioning cylinder, and each of which is arranged at equal intervals along the circumference of the first driven disk, one end of each limit rod is fixedly connected to the first driven disk, and the other end of each limit rod is inserted into the first positioning cylinder; A return spring is provided in plurality, the number of the return springs is the same as the number of the limit rods, each limit rod corresponds to a return spring, the return spring is provided in the first positioning tube, one end of the return spring is fixedly connected to the limit rod, and the other end of the return spring is fixedly connected to the first positioning tube.

7. The armored thermal resistor lead wire structure according to claim 6, characterized in that: The first supporting tube is arranged between the plurality of limiting rods.

8. The armored thermal resistor lead wire structure according to claim 7, characterized in that: The first positioning cylinder is provided with a plurality of limiting holes, the number of the limiting holes is the same as the number of the limiting rods, and each limiting rod is inserted into one of the limiting holes.

9. The armored thermal resistor lead wire structure according to claim 8, characterized in that: The second positioning tube comprises: A positioning portion is disposed in the first positioning tube, one end of the positioning portion abuts against one of the first limiting rings, and the other end of the positioning portion is suspended; The connecting portion is fixedly connected to the positioning portion, and the first positioning tube is connected to the positioning portion through the connecting portion.

10. The armored thermal resistor lead wire structure according to claim 9, characterized in that: An annular second limiting groove is formed on the outer circumferential surface of the first positioning cylinder, a second limiting ring is fixed on the inner wall of the receiving member, and the second limiting ring is rotatably connected to the second limiting groove.

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