Thermal resistance tool for temperature measurement

Abstract

The utility model relates to a thermal resistance tool for temperature measurement, which relates to the technical field of temperature measuring devices, and comprises a junction box, a resistor sleeve and a resistor body, the resistor body is positioned in the resistor sleeve, one end of the resistor sleeve is connected with the junction box, and the other end of the resistor sleeve is connected with the temperature measuring device. The junction box comprises a base, a wire holder arranged in the base and a box cover connected to the base in a sealed mode, an annular table is integrally arranged on the base in a protruding mode, a wiring cavity for installation of the wire holder is formed in the annular table, a plurality of clamping strips are arranged at the side end of the periphery of the annular table, and the clamping strips are arranged in the annular table. The clamping strip is in an arc shape and is coaxial with the annular table, a receding groove allowing the clamping strip to be inserted in the axis direction of the annular table is formed in the side end of the box cover, and a clamping groove communicating with the receding groove and allowing the clamping strip to be inserted in a sliding mode is formed in the side end of the box cover. The box cover has the beneficial effect that the box cover is more convenient to mount and dismount.

Description

Technical Field

[0001] The utility model relates to the technical field of temperature measuring devices, in particular to a thermal resistance tool for temperature measurement. Background Art

[0002] Thermistor is a common temperature measuring element. Its principle is to convert the resistance value of thermistor detection element into temperature value through calculation according to the regular change of the resistance value of thermistor detection element with temperature. Generally speaking, materials whose resistance value of the conductor is proportional to the change of temperature are selected as thermistor detection elements, such as our common platinum thermistor, that is, platinum wire is used as thermistor detection element.

[0003] Existing thermal resistor tools usually include a junction box, a resistor sleeve and a resistor body. The resistor body is located inside the resistor sleeve. One end of the resistor sleeve is connected to the junction box. The junction box includes a base, a terminal holder arranged inside the base, and a box cover sealed and connected to the base. The traditional box cover is directly mounted on the base through threads, and a special wrench is required to tighten it during installation, which is very inconvenient. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the above-mentioned shortcomings and deficiencies of the prior art, the utility model provides a thermal resistance tool for temperature measurement, which solves the technical problem that the traditional box cover needs a special wrench to tighten when it is installed on the base, which is very inconvenient.

[0006] (II) Technical solution

[0007] In order to achieve the above-mentioned purpose, the main technical solutions adopted by the utility model include:

[0008] The utility model provides a thermal resistor tool for temperature measurement, comprising a junction box, a resistor sleeve and a resistor body, wherein the resistor body is located inside the resistor sleeve, one end of the resistor sleeve is connected to the junction box, the junction box comprises a base, a terminal holder arranged inside the base and a box cover sealed and connected to the base, a ring platform is integrally provided on the base, a wiring cavity for installing the terminal holder is formed inside the ring platform, a plurality of clamping strips are arranged on the outer peripheral side end of the ring platform, the clamping strips are in an arc shape and are coaxial with the ring platform, a clearance groove for inserting the clamping strip along the axial direction of the ring platform is provided on the side end of the box cover, and a clamping groove connected to the clearance groove and for slidingly inserting the clamping strip is provided on the side end of the box cover.

[0009] The utility model provides a thermal resistor tool for temperature measurement. When installing the thermal resistor tool, the resistor body, the resistor sleeve and the base are installed in sequence, and then the box cover is directly buckled on the base so that the ring stage is inserted into the box cover. At this time, the card strip will be inserted along the clearance groove, and then the box cover is rotated to make the card strip at the side end of the ring stage slide from the clearance groove into the card slot. At this time, the box cover and the base are fixed. This solution makes the installation and removal of the box cover more convenient.

[0010] Optionally, a pressure plate is provided at one end of the clamping strip away from the ring stage, the pressure plate is arc-shaped, the width of the pressure plate along the axis of the ring stage is wider than the width of the clamping strip, and the pressure plate is pressed against the outer peripheral side end of the box cover when the clamping strip is inserted into the clamping slot.

[0011] By arranging a pressure plate at one end of the clamping strip away from the ring platform, when the clamping strip is inserted into the clamping slot, the pressure plate will be pressed tightly against the outer peripheral side end of the box cover, thereby reinforcing the connection between the box cover and the ring platform and ensuring the stability of the connection.

[0012] Optionally, the thickness of the pressure plate gradually increases along the length direction of the clamping strip, the maximum gap between the pressure plate and the ring stage is greater than the thickness of the side end of the box cover, and the minimum gap between the pressure plate and the ring stage is less than the thickness of the side end of the box cover.

[0013] By setting the thickness of the pressure plate to gradually increase, when the card strip is inserted into the card slot, the side end of the box cover can be more conveniently inserted into the gap between the pressure plate and the ring platform, and the minimum gap between the pressure plate and the ring platform is smaller than the thickness of the side end of the box cover, so that after the card strip is fully inserted into the card slot, the pressure plate will produce a certain degree of deformation, thereby clamping the box cover, making the connection more secure.

[0014] Optionally, spherical grooves are formed on both sides of the slot at the outer peripheral side ends of the box cover, and a spherical protrusion is provided on an end surface of the thickest part of the pressure plate close to the ring platform and is embedded in the groove as the box cover rotates.

[0015] By providing a spherical groove at the outer end of the box cover, when the card strip is fully inserted into the card slot, the ball protrusion at the last part of the pressure plate will be directly inserted into the groove, thereby positioning, making the connection more firm and not easy to be disengaged.

[0016] Optionally, a sealing ring is coaxially arranged on the inner wall of the box cover, and the top of the ring platform presses the sealing ring tightly when the box cover is installed.

[0017] By coaxially arranging a sealing ring on the inner wall of the box cover, after the box cover and the ring platform are fixed together, the top of the ring platform presses the sealing ring, causing the sealing ring to deform, thereby sealing the gap between the ring platform and the box cover.

[0018] Optionally, a sealing cylinder is coaxially arranged on the inner wall of the box cover inside the sealing ring, and a plurality of sealing rubber rings are coaxially distributed on the outer peripheral wall of the sealing cylinder along its own axial direction. The sealing cylinder is installed with the box cover to abut against the inner wall of the ring platform and press the sealing rubber ring.

[0019] By arranging a sealing cylinder on the inner wall of the box cover, multiple circles of sealing rubber rings are coaxially distributed on the outer peripheral side end of the sealing cylinder. When the box cover and the ring platform are installed together, the multiple circles of sealing rubber rings are pressed against the inner wall of the ring platform and deformed, thereby forming a multi-layer seal to ensure the sealing effect.

[0020] Optionally, the give-way groove is in a flared shape, the opening width of the give-way groove is greater than the length of the clamping strip, and the bottom wall of the give-way groove is flush with a side wall of the clamping slot away from an end of the give-way groove opening.

[0021] By setting the opening of the give way groove to be flared, when the box cover is put on the ring platform, the card strip can be inserted into the give way groove more smoothly, making the installation easier. At the same time, the bottom of the give way groove is flush with one side wall of the card slot, so that when installing the box cover, the card strip can be directly abutted against the bottom of the give way groove and then the box cover can be rotated, so that the card strip can be slid into the card slot, which is more convenient.

[0022] Optionally, a limiting arc piece embedded in the clearance groove is magnetically fixed to one side of the clamping strip on the ring platform, and the limiting arc piece completely fills the clearance groove and abuts against one end of the clamping strip.

[0023] When the box cover and the ring platform are installed together, a limiting arc piece is embedded in the position of the clearance groove, so that the limiting arc piece is magnetically attracted to the side end of the ring platform, so that the box cover is limited by the limiting arc piece, and the box cover cannot be easily rotated, thereby completely fixing the box cover and the ring platform.

[0024] Optionally, a metal chain is provided on the top of the box cover, and one end of the metal chain away from the box cover is connected to the side end of the base.

[0025] The box cover and the base are connected together by a metal chain. When installing and removing the box cover, the box cover can be always connected to the base by the metal chain to avoid loss.

[0026] (III) Beneficial effects

[0027] The beneficial effects of the utility model are as follows: when installing the thermal resistance tool for temperature measurement of the utility model, the resistor body, the resistor sleeve and the base are installed in sequence, and then the box cover is directly buckled on the base, so that the ring stage is inserted into the box cover, and at this time the card strip will be inserted along the clearance groove, and then the box cover is rotated to make the card strip at the side end of the ring stage slide from the clearance groove into the card slot, and at this time the box cover and the base are fixed, and this scheme makes the installation and removal of the box cover more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 A cross-sectional view of an embodiment of the utility model;

[0029] Figure 2 A cross-sectional view of a junction box in an embodiment of the utility model;

[0030] Figure 3 This is a schematic diagram of an explosion of a junction box in an embodiment of the utility model;

[0031] Figure 4 for Figure 3 Enlarged view of point A.

[0032] [Description of Reference Numerals]

[0033] 1. Junction box; 11. Base; 12. Junction seat; 13. Box cover; 131. Make way slot; 132. Card slot; 133. Groove; 134. Sealing ring; 135. Sealing cylinder; 136. Sealing rubber ring; 14. Ring platform; 141. Junction cavity; 142. Card strip; 143. Press plate; 144. Ball convex; 2. Resistor sleeve; 3. Resistor body; 4. Limiting arc piece; 5. Metal chain. DETAILED DESCRIPTION

[0034] In order to better explain the present invention and facilitate understanding, the present invention is described in detail below through specific implementation modes in conjunction with the accompanying drawings.

[0035] The thermal resistor tool for temperature measurement proposed in the embodiment of the utility model, when installing the thermal resistor tool, the resistor body, the resistor sleeve and the base are installed in sequence, and then the box cover is directly buckled on the base, so that the ring stage is inserted into the box cover, at this time, the card strip will be inserted along the clearance groove, and then the box cover is rotated to make the card strip at the side end of the ring stage slide from the clearance groove into the card slot, and at this time the box cover and the base are fixed. This scheme makes the installation and removal of the box cover more convenient.

[0036] In order to better understand the above technical solution, exemplary embodiments of the present invention will be described in more detail with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to enable a clearer and more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0037] Reference Figure 1 and Figure 2 A thermal resistance tool for temperature measurement includes a junction box 1, a resistor sleeve 2 and a resistor body 3. The resistor body 3 is located inside the resistor sleeve 2, and one end of the resistor sleeve 2 is connected to the junction box 1.

[0038] The junction box 1 comprises a base 11, a wiring seat 12 arranged inside the base 11 and a box cover 13 sealed and connected to the base 11. A ring platform 14 is integrally protruded on the base 11, and a wiring cavity 141 is formed inside the ring platform 14 for fixing the wiring seat 12.

[0039] Reference Figure 3 and Figure 4 The outer peripheral side end of the ring platform 14 is integrally formed with a plurality of clips 142, which are arc-shaped and coaxial with the ring platform 14. The side end of the box cover 13 is provided with a clearance groove 131 for the clips 142 to be inserted along the axis direction of the ring platform 14, and the side end of the box cover 13 is provided with a clip groove 132 connected to the clearance groove 131 and for the clips 142 to slide and insert. The box cover 13 is directly buckled on the base 11, so that the ring platform 14 is inserted into the box cover 13, and the clips 142 will be inserted along the clearance groove 131. Then the box cover 13 is rotated, so that the clips 142 on the side end of the ring platform 14 slide from the clearance groove 131 into the clip groove 132, and the box cover 13 and the base 11 are fixed.

[0040] A pressure plate 143 is integrally provided at one side end of the clamping strip 142 away from the ring platform 14. The pressure plate 143 is arc-shaped. The width of the pressure plate 143 along the axial direction of the ring platform 14 is wider than the width of the clamping strip 142. When the clamping strip 142 is inserted into the clamping groove 132, the pressure plate 143 is pressed against the outer peripheral side end of the box cover 13. The thickness of the pressure plate 143 gradually increases along the length direction of the clamping strip 142. The maximum gap between the pressure plate 143 and the ring platform 14 is greater than the thickness of the side end of the box cover 13, and the minimum gap between the pressure plate 143 and the ring platform 14 is less than the thickness of the side end of the box cover 13. When the clamping strip 142 is inserted into the clamping slot 132, the side end of the box cover 13 can be more conveniently inserted into the gap between the pressure plate 143 and the ring platform 14, and the minimum gap between the pressure plate 143 and the ring platform 14 is smaller than the thickness of the side end of the box cover 13, so that after the clamping strip 142 is fully inserted into the clamping slot 132, the pressure plate 143 will produce a certain degree of deformation, thereby clamping the box cover 13.

[0041] The outer peripheral side of the box cover 13 is provided with spherical grooves 133 on both sides of the slot 132, and the thickest part of the pressing plate 143 is provided with a spherical protrusion 144 which is inserted into the groove 133 as the box cover 13 rotates. When the clamping strip 142 is fully inserted into the slot 132, the spherical protrusion 144 at the rear part of the pressing plate 143 will be directly inserted into the groove 133, thereby positioning.

[0042] The clearance groove 131 is in a flared shape, the opening width of the clearance groove 131 is greater than the length of the clamping strip 142, and the bottom wall of the clearance groove 131 is flush with a side wall of the clamping strip 142 away from the opening end of the clearance groove 131. When the box cover 13 is mounted on the ring stage 14, the clamping strip 142 can be inserted into the clearance groove 131 more smoothly, making the installation easier. At the same time, the bottom of the clearance groove 131 is flush with a side wall of the clamping slot 132, so that when the box cover 13 is installed, the clamping strip 142 can be directly abutted against the bottom of the clearance groove 131 and then the box cover 13 is rotated, so that the clamping strip 142 slides and is inserted into the clamping slot 132.

[0043] The ring platform 14 is magnetically fixed with a limiting arc piece 4 embedded in the clearance groove 131 on one side of the clamping strip 142. The limiting arc piece 4 completely fills the clearance groove 131 and abuts against one end of the clamping strip 142. By embedding the limiting arc piece 4 at the position of the clearance groove 131, the limiting arc piece 4 is magnetically attracted to the side end of the ring platform 14, so that the box cover 13 is limited by the limiting arc piece 4, so that the box cover 13 cannot be easily rotated, and then the box cover 13 and the ring platform 14 are completely fixed.

[0044] Reference Figure 2 A sealing ring 134 is coaxially embedded in the inner wall of the box cover 13. The top of the ring platform 14 presses the sealing ring 134 as the box cover 13 is installed. A sealing cylinder 135 is coaxially and integrally provided inside the sealing ring 134 on the inner wall of the box cover 13. Multiple sealing rubber rings 136 are coaxially bonded to the outer peripheral wall of the sealing cylinder 135 along its own axial direction. The sealing cylinder 135 is installed with the box cover 13 and abuts against the inner wall of the ring platform 14 and presses the sealing rubber ring 136. When the box cover 13 and the ring platform 14 are installed together, the top of the ring platform 14 presses against the sealing ring 134, and multiple sealing rubber rings 136 press against the inner wall of the ring platform 14 and deform, thereby forming a multi-layer seal to ensure the sealing effect.

[0045] Reference Figure 3 The top of the box cover 13 is fixed with a metal chain 5 by bolts, and one end of the metal chain 5 away from the box cover 13 is connected to the side end of the base 11 by bolts. When installing and removing the box cover 13, the box cover 13 can be always connected to the base 11 by the metal chain 5 to avoid loss.

[0046] In the description of the present utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0047] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0048] In the present utility model, unless otherwise clearly specified and limited, when a first feature is “on” or “below” a second feature, it may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, when a first feature is “above”, “above” or “above” a second feature, it may be that the first feature is directly above or obliquely above the second feature, or it may simply mean that the first feature is higher in level than the second feature. When a first feature is “below”, “below” or “below” a second feature, it may be that the first feature is directly below or obliquely below the second feature, or it may simply mean that the first feature is lower in level than the second feature.

[0049] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "embodiment", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0050] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A thermal resistance tool for temperature measurement, comprising a junction box (1), a resistance sleeve (2) and a resistor (3), wherein the resistor (3) is located inside the resistance sleeve (2), and one end of the resistance sleeve (2) is connected to the junction box (1), characterized in that: The junction box (1) comprises a base (11), a wiring seat (12) arranged inside the base (11), and a box cover (13) sealed and connected to the base (11); a ring platform (14) is integrally provided on the base (11); a wiring cavity (141) for mounting the wiring seat (12) is formed inside the ring platform (14); a plurality of clamping strips (142) are provided at the outer peripheral side end of the ring platform (14); the clamping strips (142) are arc-shaped and coaxial with the ring platform (14); a clearance groove (131) is provided at the side end of the box cover (13) for the clamping strip (142) to be inserted along the axial direction of the ring platform (14); and a clamping groove (132) is provided at the side end of the box cover (13) for communicating with the clearance groove (131) and for the clamping strip (142) to be slidably inserted.

2. The thermal resistance tool for temperature measurement according to claim 1, characterized in that: A pressure plate (143) is provided at one end of the clamping strip (142) away from the ring platform (14); the pressure plate (143) is in an arc shape; the width of the pressure plate (143) along the axis direction of the ring platform (14) is wider than the width of the clamping strip (142); and the pressure plate (143) is pressed against the outer peripheral side end of the box cover (13) when the clamping strip (142) is inserted into the clamping groove (132).

3. The thermal resistance tool for temperature measurement according to claim 2, characterized in that: The thickness of the pressing plate (143) gradually increases along the length direction of the clamping strip (142); the maximum gap between the pressing plate (143) and the ring platform (14) is greater than the thickness of the side end of the box cover (13); and the minimum gap between the pressing plate (143) and the ring platform (14) is less than the thickness of the side end of the box cover (13).

4. The thermal resistance tool for temperature measurement according to claim 3, characterized in that: The outer peripheral side ends of the box cover (13) are provided with spherical grooves (133) on both sides of the clamping groove (132), and the end surface of the thickest part of the pressure plate (143) close to the ring platform (14) is provided with a spherical protrusion (144) which is embedded in the groove (133) when rotating with the box cover (13).

5. The thermal resistance tool for temperature measurement according to claim 1, characterized in that: A sealing ring (134) is coaxially arranged on the inner wall of the box cover (13), and the top of the ring platform (14) presses the sealing ring (134) when the box cover (13) is installed.

6. The thermal resistance tool for temperature measurement according to claim 5, characterized in that: The inner wall of the box cover (13) is coaxially provided with a sealing cylinder (135) on the inner side of the sealing ring (134); the outer peripheral wall of the sealing cylinder (135) is coaxially distributed with a plurality of circles of sealing rubber rings (136) along its own axial direction; the sealing cylinder (135) is installed with the box cover (13) to abut against the inner wall of the ring platform (14) and press the sealing rubber ring (136).

7. The thermal resistance tool for temperature measurement according to claim 1, characterized in that: The giving way groove (131) is in a flared shape, the opening width of the giving way groove (131) is greater than the length of the clamping strip (142), and the bottom wall of the giving way groove (131) is flush with a side wall of the clamping slot (132) away from the opening end of the giving way groove (131).

8. The thermal resistance tool for temperature measurement according to claim 7, characterized in that: The ring platform (14) is magnetically fixed with a limiting arc piece (4) embedded in the clearance groove (131) on one side of the clamping strip (142); the limiting arc piece (4) completely fills the clearance groove (131) and abuts against one end of the clamping strip (142).

9. The thermal resistance tool for temperature measurement according to claim 1, characterized in that: A metal chain (5) is arranged on the top of the box cover (13), and one end of the metal chain (5) away from the box cover (13) is connected to the side end of the base (11).

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