Thermal resistor with lead anti-fracture connection structure

Abstract

The utility model discloses a thermal resistor with a lead anti-fracture connection structure, which relates to the field of thermal resistors and comprises a thermal resistor head, a lead arranged at one end of the thermal resistor head and a protective sleeve, a fixing component used for fixing the lead is arranged on the inner side of the protective sleeve, and a movable component is arranged at one end of the protective sleeve. The movable assembly is composed of a first installation body arranged in the protective sleeve, a second installation body located outside the protective sleeve, a rotating ball and a connecting bolt, the first installation body and the second installation body are each provided with a hemispherical groove, and one side of each hemispherical groove is provided with a wire penetrating hole through which a wire can penetrate in a communicating mode; according to the utility model, the wire is clamped by the fixing assembly installed in the protective sleeve, the wire with enough length is reserved between the thermal resistor head and the fixing support, so that the wire is not in a tensioned state, and the rotating ball can rotate in the ball groove, so that the wire is not easy to break at the joint with the thermal resistor head when the wire is pulled, and the service life of the wire is prolonged. And the probability that the wire is broken from the joint of the wire and the thermal resistor head can be greatly reduced.

Description

Technical Field

[0001] The utility model relates to the technical field related to thermal resistors, in particular to a thermal resistor with a wire anti-fracture connection structure. Background Art

[0002] Thermal resistors are the most commonly used temperature detectors in the medium and low temperature range. Thermal resistor temperature measurement is based on the property that the resistance value of a metal conductor increases with the increase of temperature to measure temperature.

[0003] When installing and using thermal resistors, the connection between the wire core inside the data cable and the thermal resistor head is often broken due to vibration, pulling, bending, etc., causing the thermal resistor to be unable to be used normally and resulting in a waste of resources. Utility Model Content

[0004] In order to solve the defects in the prior art, the utility model provides a thermal resistor with a wire anti-fracture connection structure.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0006] The utility model discloses a thermal resistor with a wire anti-fracture connection structure, comprising a thermal resistor head, a wire arranged at one end of the thermal resistor head and a protective sleeve, wherein a fixing component for fixing the wire is arranged inside the protective sleeve, and a movable component is arranged at one end of the protective sleeve, wherein the movable component is composed of a mounting body 1 arranged inside the protective sleeve, a mounting body 2 located outside the protective sleeve, a rotating ball and a connecting bolt, wherein both the mounting body 1 and the mounting body 2 are provided with a hemispherical groove, and one side of the hemispherical groove is connected to a threading hole capable of accommodating the wire to pass through, and the two hemispherical grooves form a ball groove capable of being rotatably connected with the rotating ball.

[0007] As a preferred technical solution of the utility model, the fixing assembly includes a fixing bracket installed on the inner wall of the protective sleeve and a movable column that penetrates the protective sleeve and is slidably connected to the protective sleeve. The movable column is arranged on the outside of the fixed bracket. The movable column is provided with a strip guide hole that can accommodate the wire and the fixed bracket to pass through. A reset spring is also sleeved on the outer wall of the movable column, and the two ends of the reset spring are respectively connected to the inner wall of the protective sleeve and the movable column.

[0008] As a preferred technical solution of the utility model, the installation body 1 is provided with a plurality of threaded blind holes threadedly connected with the connecting bolts, and a positioning groove is provided on the other side of the hemispherical groove on the installation body 1.

[0009] As a preferred technical solution of the utility model, the second mounting body is connected to the first mounting body via connecting bolts, and a positioning protrusion matching the positioning groove is formed through an annular groove at one end of the second mounting body, and a plurality of bolt mounting holes are opened on the second mounting body around the positioning protrusion.

[0010] As a preferred technical solution of the utility model, the rotating ball is provided with a plurality of wire through-holes capable of accommodating the wires to pass through.

[0011] As a preferred technical solution of the utility model, one end of the thermal resistance head is provided with a threaded interface threadedly connected to the protective sleeve, and the threaded interface is located outside the wire.

[0012] The beneficial effects of the utility model are:

[0013] 1. This type of thermal resistor with a wire anti-breakage connection structure clamps the wire through a fixed component installed in the protective sleeve. A sufficient length of wire is reserved between the thermal resistor head and the fixed bracket so that the wire is not in a tensioned state. Moreover, since the rotating ball can rotate in the ball groove, it is not easy to cause the wire to break at the connection with the thermal resistor head when the wire is pulled, which can greatly reduce the probability of the wire breaking at the connection with the thermal resistor head.

[0014] 2. This type of thermal resistor with a wire anti-breakage connection structure presses down the movable column to stretch the reset spring to expose a strip guide hole of sufficient length. After the wire passes through the exposed strip guide hole, the pressure on the movable column is removed. Under the action of the elastic force of the reset spring, the movable column moves upward, and the wire will be clamped between the movable column and the fixed bracket, thereby fixing the wire in the protective sleeve. The operation is very simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0016] Figure 1 This is a schematic diagram of the structure of a thermal resistor with a wire anti-fracture connection structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the disassembly structure of a thermal resistor head, a protective sleeve and a movable component of a thermal resistor with a wire anti-fracture connection structure of the utility model;

[0018] Figure 3 This is a first-view exploded view of a movable component of a thermal resistor with a wire anti-fracture connection structure of the utility model;

[0019] Figure 4 This is an exploded view from the second perspective of a movable component of a thermal resistor with a wire anti-fracture connection structure of the utility model;

[0020] Figure 5 The utility model is a structural schematic diagram of a fixed component of a thermal resistor with a wire anti-fracture connection structure.

[0021] In the figure: 1. thermal resistor head; 2. protective sleeve; 3. wire; 4. threaded interface; 5. movable component; 51. mounting body 1; 511. positioning groove; 512. threaded blind hole; 52. rotating ball; 521. wire through hole; 53. mounting body 2; 531. positioning protrusion; 532. bolt mounting hole; 54. connecting bolt; 55. hemispherical groove; 56. threading hole; 6. fixing component; 61. fixing bracket; 62. movable column; 621. strip guide hole; 63. reset spring. DETAILED DESCRIPTION

[0022] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0023] Example: Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the utility model is a thermal resistor with a wire anti-fracture connection structure, comprising a thermal resistor head 1, a wire 3 arranged at one end of the thermal resistor head 1 and a protective sleeve 2, wherein the inner side of the protective sleeve 2 is provided with a fixing component 6 for fixing the wire 3, and one end of the protective sleeve 2 is provided with a movable component 5, wherein the movable component 5 is composed of a mounting body 1 51 arranged in the protective sleeve 2, a mounting body 2 53 located outside the protective sleeve 2, a rotating ball 52 and a connecting bolt 54, and the mounting body 1 51 and the mounting body 2 53 are both provided with a hemispherical groove 55, and one side of the hemispherical groove 55 is connected to a threading hole 56 capable of accommodating the wire 3 to pass through, and the two hemispherical grooves 55 form a ball groove that can be rotatably connected to the rotating ball 52.

[0024] The fixing assembly 6 includes a fixing bracket 61 installed on the inner wall of the protective sleeve 2 and a movable column 62 that is arranged on the protective sleeve 2 and is slidably connected to the protective sleeve 2. The movable column 62 is arranged on the outer side of the fixing bracket 61. The movable column 62 is provided with a strip guide hole 621 that can accommodate the wire 3 and the fixing bracket 61 to pass through. A reset spring 63 is also sleeved on the outer wall of the movable column 62. The two ends of the reset spring 63 are respectively connected to the inner wall of the protective sleeve 2 and the movable column 62. The movable column 62 is pressed down to make the reset spring 63 Stretch to expose a strip guide hole 621 of sufficient length. After the wire 3 passes through the exposed strip guide hole 621, the pressure on the movable column 62 is released. Under the action of the elastic force of the reset spring 63, the movable column 62 moves up, and the wire 3 will be clamped between the movable column 62 and the fixed bracket 61, so as to fix the wire 3 located in the protective sleeve 2. However, the wire 3 between the thermal resistor head 1 and the fixed bracket 61 is not in a tensioned state. Therefore, when the external wire 3 is pulled, it is not easy to cause the wire 3 to break from the connection with the thermal resistor head 1.

[0025] Among them, the mounting body 1 51 is provided with a plurality of threaded blind holes 512 which are screwed with the connecting bolts 54, and a positioning groove 511 is provided on the other side of the hemispherical groove 55 on the mounting body 1 51. The cooperation between the positioning groove 511 and the positioning protrusion 531, and the cooperation between the mounting body 1 51 and the annular groove, can quickly assemble the mounting body 1 51 and the mounting body 2 53 together, thereby improving the installation efficiency.

[0026] Among them, the second mounting body 53 is connected to the first mounting body 51 via a connecting bolt 54, and a positioning protrusion 531 matching the positioning groove 511 is formed at one end of the second mounting body 53 through an annular groove, and a plurality of bolt mounting holes 532 are opened around the positioning protrusion 531 on the second mounting body 53, and the bolt mounting holes 532 are used to install the connecting bolts 54 and position the connecting bolts 54. After the connecting bolts 54 are passed through the bolt mounting holes 532 and aligned with the threaded blind holes 512, the connecting bolts 54 are tightened using tools such as a screwdriver to complete the connection between the second mounting body 53 and the first mounting body 51.

[0027] Among them, the rotating ball 52 is provided with a plurality of wire through holes 521 that can accommodate the wire 3 to pass through. The wire through holes 521 directly penetrate the rotating ball 52. There are a plurality of wire through holes 521. The diameters of the wire through holes 521 on different axes are different, so it is suitable for allowing wires 3 of different diameters to pass through. The rotating ball 52 is made of rubber material, and its own elasticity helps to clamp the wire 3.

[0028] Among them, one end of the thermal resistor head 1 is provided with a threaded interface 4 threadedly connected to the protective sleeve 2, the threaded interface 4 is located outside the wire 3, the threaded interface 4 is used to install the protective sleeve 2, and the threaded interface 4 and the protective sleeve 2 are threadedly connected, which can conveniently install or remove the protective sleeve 2.

[0029] During operation, a sufficient length of wire 3 is reserved between the thermal resistor head 1 and the fixed bracket 61 (this part of the wire 3 does not need to be in a tensioned state), the movable column 62 is pressed down, the reset spring 63 is stretched, and a strip guide hole 621 of sufficient length is exposed. After the wire 3 passes through the exposed strip guide hole 621, the pressure acting on the movable column 62 is removed. Under the action of the elastic force of the reset spring 63, the movable column 62 moves up, and the wire 3 will be clamped between the movable column 62 and the fixed bracket 61, so that the protective The wire 3 in the sleeve 2 passes through the wire threading hole 56 on the mounting body 1 51, the wire threading hole 521 on the rotating ball 52 and the wire threading hole 56 on the mounting body 2 53 in sequence, and then the rotating ball 52 is placed in the hemispherical groove 55, and then the mounting body 1 51 and the mounting body 2 53 are connected using the connecting bolt 54. Since the rotating ball 52 can rotate in the ball groove, it is not easy to cause the wire 3 to break at the connection with the thermal resistor head 1 when the wire is pulled, which can greatly reduce the probability of the wire 3 breaking at the connection with the thermal resistor head 1.

[0030] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A thermal resistor with a wire anti-fracture connection structure, comprising a thermal resistor head (1), a wire (3) arranged at one end of the thermal resistor head (1), and a protective sleeve (2), characterized in that: A fixing assembly (6) for fixing the wire (3) is provided inside the protective sleeve (2), and a movable assembly (5) is provided at one end of the protective sleeve (2). The movable assembly (5) is composed of a first mounting body (51) arranged inside the protective sleeve (2), a second mounting body (53) located outside the protective sleeve (2), a rotating ball (52) and a connecting bolt (54). Both the first mounting body (51) and the second mounting body (53) are provided with a hemispherical groove (55), and one side of the hemispherical groove (55) is connected to a threading hole (56) capable of accommodating the wire (3) to pass through, and the two hemispherical grooves (55) form a ball groove that can be rotatably connected to the rotating ball (52).

2. A thermal resistor with a wire anti-fracture connection structure according to claim 1, characterized in that: The fixing assembly (6) comprises a fixing bracket (61) mounted on the inner wall of the protective sleeve (2) and a movable column (62) penetrating the protective sleeve (2) and slidably connected to the protective sleeve (2); the movable column (62) is arranged on the outer side of the fixing bracket (61); a strip guide hole (621) is provided on the movable column (62) for accommodating the wire (3) and the fixing bracket (61) to pass through; a reset spring (63) is also sleeved on the outer wall of the movable column (62); two ends of the reset spring (63) are respectively connected to the inner wall of the protective sleeve (2) and the movable column (62).

3. A thermal resistor with a wire anti-fracture connection structure according to claim 1, characterized in that: The installation body (51) is provided with a plurality of threaded blind holes (512) threadedly connected to the connecting bolts (54), and a positioning groove (511) is provided on the other side of the hemispherical groove (55) on the installation body (51).

4. A thermal resistor with a wire anti-fracture connection structure according to claim 3, characterized in that: The second installation body (53) is connected to the first installation body (51) via a connecting bolt (54); a positioning protrusion (531) matching the positioning groove (511) is formed at one end of the second installation body (53) via an annular groove; and a plurality of bolt installation holes (532) are provided around the positioning protrusion (531) on the second installation body (53).

5. A thermal resistor with a wire anti-fracture connection structure according to claim 1, characterized in that: The rotating ball (52) is provided with a plurality of wire through holes (521) capable of allowing the wires (3) to pass through.

6. A thermal resistor with a wire anti-fracture connection structure according to claim 1, characterized in that: One end of the thermal resistance head (1) is provided with a threaded interface (4) threadedly connected to the protective sleeve (2), and the threaded interface (4) is located outside the wire (3).

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