Temperature indication assembly and wiring device
By designing temperature indicator components and wiring devices in electrical equipment, and utilizing the expansion of sealing gas to drive the movement of the sealing part to indicate temperature changes, the problem of abnormal overheating of wiring terminals caused by insufficient fastener torque is solved, thus improving the safety of electrical equipment.
Patent Information
- Application Number
- CN202423274630.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-27
- Publication Date
- 2025-12-16
- Estimated Expiration
- 2034-12-27
AI Technical Summary
In electrical equipment, insufficient or decreased fastener torque can cause cables to detach from terminals, which can easily lead to abnormal heating or even burning of the terminals, and this can be difficult to detect.
A temperature indicating component is designed, including a heat-conducting part and a sealing part. The sealing part is driven to move by the sealing gas when it expands thermally to indicate temperature changes, and heat is conducted through the heat-conducting part. Combined with a transparent cover and a wiring device, the temperature changes of the wiring terminals can be monitored in real time.
It enables real-time temperature monitoring of the terminals, timely detection of abnormalities, improved safety performance of electrical equipment, and prevention of terminal burn-out.
Smart Images
Figure CN223678638U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] Embodiments of the present disclosure relate to the field of electrical equipment, and more particularly to a temperature indicating assembly and a wiring device. BACKGROUND
[0002] In the wiring scene of electrical equipment, it is usually required to insert a cable into a wiring hole on a wiring frame so that the cable is connected to a wiring terminal in the wiring frame, and then the cable is fixed by a fastener, thereby realizing various functions.
[0003] However, when the torque on the fastener is insufficient or decreases, the cable is prone to loosen from the wiring terminal. This condition is not easy to be detected and can cause the wiring terminal to abnormally heat and even be ablated. SUMMARY
[0004] The purpose of the present disclosure is to provide a temperature indicating assembly and a wiring device to at least partially solve the above problems.
[0005] In a first aspect of the present disclosure, a temperature indicating assembly is provided. The temperature indicating assembly comprises: a heat-conducting portion, the heat-conducting portion comprising a recessed portion, the recessed portion being provided on an outer surface of the heat-conducting portion adjacent to a top portion of the heat-conducting portion and recessed towards an inner side of the heat-conducting portion; and a sealing portion, a bottom portion of the sealing portion being formed with a clamping portion, the clamping portion being clamped to the recessed portion so that the sealing portion is connected to the top portion of the heat-conducting portion, a sealing gas being provided between the heat-conducting portion and the sealing portion, the sealing gas being capable of expanding in the case of temperature rise of the heat-conducting portion to drive the top portion of the sealing portion to move along a length direction of the sealing portion.
[0006] According to the temperature indicating assembly of the embodiments of the present disclosure, the heat-conducting portion can reliably conduct the heat of the object to be measured, the sealing portion can reliably move in the case of thermal expansion of the sealing gas to indicate the temperature change of the object to be measured, and the recessed portion and the clamping portion can reliably connect the heat-conducting portion and the sealing portion together and reliably seal the sealing gas between the heat-conducting portion and the sealing portion.
[0007] In some embodiments, the temperature indicating assembly further comprises an extension portion, the extension portion being provided at a bottom portion of the heat-conducting portion and extending along a length direction of the heat-conducting portion.
[0008] In some embodiments, the temperature indicating assembly further comprises a bent portion, the bent portion being provided at an end of the extension portion away from the heat-conducting portion and being bent outward relative to the extension portion.
[0009] In some embodiments, the heat-conductive portion is in a round tube shape and includes a first portion, a second portion, and a transition portion connected between the first portion and the second portion, a peripheral dimension of the first portion is larger than a peripheral dimension of the second portion, and a peripheral dimension of one end of the transition portion adjacent to the first portion is larger than a peripheral dimension of one end of the transition portion adjacent to the second portion.
[0010] In a second aspect of the present disclosure, a wiring device is provided. The wiring device includes: a wiring frame including a plurality of wiring holes and a mounting slot disposed between a pair of the wiring holes adjacent to each other among the plurality of wiring holes; the temperature indicating assembly of the first aspect of the present disclosure disposed in the mounting slot adjacent to one of the pair of the wiring holes, a bottom of the heat-conductive portion of the temperature indicating assembly connected to a side of the mounting slot adjacent to the corresponding wiring hole; and a transparent cover plate coupled to the mounting slot and abutting against the temperature indicating assembly.
[0011] In some embodiments, the wiring device further includes a plurality of terminal frames and a plurality of terminal terminals, each of the plurality of terminal frames is disposed in a corresponding wiring hole, each of the plurality of terminal terminals is disposed in a corresponding terminal frame and abuts against an inner side of the corresponding terminal frame, and the bent portion of the heat-conductive portion of the temperature indicating assembly abuts against an outer side of the corresponding terminal frame.
[0012] In some embodiments, the wiring device further includes a fixing hole disposed at a top of the wiring frame and communicating with the mounting slot, and the transparent cover plate includes a protruding portion disposed at a top of the transparent cover plate, the protruding portion being adapted to be inserted into the fixing hole along a length direction of the transparent cover plate.
[0013] In some embodiments, the wiring device further includes a fixing slot disposed at an inner portion of the wiring frame and communicating with the mounting slot, and the transparent cover plate includes a clamping jaw disposed at a bottom of the transparent cover plate and clamped to the fixing slot.
[0014] In some embodiments, the transparent cover plate includes an abutting portion disposed at one side in a thickness direction of the transparent cover plate and abutting against the temperature indicating assembly.
[0015] In some embodiments, the abutting portion includes a first abutting portion and a second abutting portion, a length of the first abutting portion in the thickness direction of the transparent cover plate is smaller than a length of the second abutting portion in the thickness direction of the transparent cover plate, and the first abutting portion and the second abutting portion abut to different positions of the heat-conductive portion.
[0016] It should be understood that the contents described in this content part are not intended to limit the key features or important features of the embodiments of the present disclosure, nor are they used to limit the scope of the present disclosure. Other features of the present disclosure will become apparent through the following description. BRIEF DESCRIPTION OF DRAWINGS
[0017] The above and other features, advantages, and aspects of embodiments of the present disclosure will become more apparent by describing in detail preferred embodiments thereof with reference to the annexed drawings in which:
[0018] Figure 1 A structural schematic of a temperature indicating assembly according to one embodiment of the present disclosure is shown;
[0019] Figure 2 An exploded schematic of a temperature indicating assembly according to one embodiment of the present disclosure is shown;
[0020] Figure 3 A structural schematic of a wiring device according to one embodiment of the present disclosure is shown;
[0021] Figure 4 An exploded schematic of a wiring device as shown in Figure 3
[0022] Figure 5 A partial cross-sectional view of a wiring device according to one embodiment of the present disclosure is shown;
[0023] Figures 6 to 8 A structural schematic of a transparent cover plate at different angles according to one embodiment of the present disclosure is shown; and
[0024] Figure 9 A partial cross-sectional view of a wiring device according to one embodiment of the present disclosure is shown. DETAILED DESCRIPTION
[0025] Preferred embodiments of the present disclosure will be described herein below with reference to the accompanying drawings. While preferred embodiments of the present disclosure are shown in the drawings, it is understood that the present disclosure can be embodied in various forms without being limited by the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the present disclosure to those skilled in the art.
[0026] The term "include," and derivations thereof, means "including, but not limited to." The term "or" means "and / or" unless otherwise indicated. The term "based on" means "based, at least in part, on." The terms "one example embodiment" and "an embodiment" mean "at least one example embodiment." The term "another embodiment" means "at least one additional embodiment." The terms "a first," "a second," etc. can refer to different or identical objects.
[0027] As described above, the wiring terminal and the cable of the electrical equipment are usually fixed by the fastener to achieve various functions. However, in actual application, the insufficient or decreased torque on the fastener is easy to cause abnormal heating of the wiring terminal. In addition, whether the fastener is tightened is not easy to be perceived. If the fastener is not tightened, it will cause the wiring terminal to be ablated. Embodiments of the present disclosure provide a temperature indicating assembly and a wiring device, in which, by setting the heat conduction part, the heat of the object to be measured can be reliably conducted, by setting the sealing part, the sealing gas can be reliably moved in the case of thermal expansion of the sealing gas to indicate the temperature change of the object to be measured, and by setting the recess and the clamping part, the heat conduction part and the sealing part can be reliably connected together and the sealing gas can be reliably sealed between the heat conduction part and the sealing part. In this way, the temperature change of the wiring terminal can be monitored in real time, so that the electrical equipment can be maintained in time, and the safety performance of the electrical equipment is greatly improved. In the following, the temperature indicating assembly 11 according to an embodiment of the present disclosure will be described in detail. Figures 1 to 9 The principles of the present disclosure are described.
[0028] Figure 1 A structural schematic diagram of the temperature indicating assembly 11 according to an embodiment of the present disclosure is shown. Figure 2 An exploded schematic diagram of the temperature indicating assembly 11 according to an embodiment of the present disclosure is shown. According to an embodiment of the present disclosure, as shown in Figure 1 and Figure 2 The temperature indicating assembly 11 described herein generally includes a heat conduction part 111 and a sealing part 112. The heat conduction part 111 includes a recess 115. The recess 115 is arranged on the outer surface of the heat conduction part 111 adjacent to the top of the heat conduction part 111 and is recessed towards the inside of the heat conduction part 111. The bottom of the sealing part 112 is formed with a clamping part 116. The clamping part 116 is clamped to the recess 115, so that the sealing part 112 is connected to the top of the heat conduction part 111. The heat conduction part 111 and the sealing part 112 are arranged with a sealing gas. The sealing gas can expand in the case of temperature rise of the heat conduction part 111 to drive the top of the sealing part 112 to move along the length direction of the sealing part 112.
[0029] In some embodiments, the recess 115 can be a ring-shaped semicircular groove recessed on the outer surface of the heat conduction part 111. Correspondingly, the clamping part 116 can be a ring formed on the bottom of the sealing part 112 to be clamped to the recess 115. It should be understood that based on the teachings given by the present disclosure, other types of recess 115 and clamping part 116 to achieve the above functions can be conceived by those skilled in the art, and these implementations all fall within the scope of the present disclosure.
[0030] In some embodiments, the heat conducting portion 111 is made of a metal material, such as phosphor copper, to more fully conduct the heat of the object to be measured, so that the sealing gas between the heat conducting portion 111 and the sealing portion 112 can reliably expand due to heat. In some embodiments, the sealing gas is air.
[0031] In some embodiments, the sealing portion 112 is made of a deformable material, such as thermoplastic vulcanizate (TPV), to more fully deform under the driving of the sealing gas. It should be understood that based on the teachings given in the present disclosure, one of ordinary skill in the art can conceive other types of heat conducting portion 111, sealing portion 112 and sealing gas to achieve the above functions, which all fall within the scope of the present disclosure.
[0032] In some embodiments, as shown in FIG. 1, the temperature indicating assembly 11 can further include an extension 113 and a bent portion 114. The extension 113 is disposed at the bottom of the heat conducting portion 111 and extends along the length direction of the heat conducting portion 111. The bent portion 114 is disposed at the end of the extension 113 away from the heat conducting portion 111 and is bent outwardly relative to the extension 113. By disposing the extension 113 and the bent portion 114, the temperature indicating assembly 11 can more fully contact the object to be measured and reliably receive the heat on the object to be measured. Figure 1
[0033] In some embodiments, the heat conducting portion 111 is in a circular tube shape and includes a first portion 1111, a second portion 1112 and a transition portion 1113. The transition portion 1113 is connected between the first portion 1111 and the second portion 1112. The peripheral size of the first portion 1111 is greater than the peripheral size of the second portion 1112. The peripheral size of the end of the transition portion 1113 adjacent to the first portion 1111 is greater than the peripheral size of the end of the transition portion 1113 adjacent to the second portion 1112. With such an arrangement, the heat receiving of the sealing gas between the heat conducting portion 111 and the sealing portion 112 can be more uniform, so that the temperature indicated by the temperature indicating assembly 11 can be more accurate.
[0034] In some embodiments, the heat conducting portion 111 can be processed by means of integrated molding, such as casting, sheet metal stamping, etc., and the embodiments of the present disclosure do not limit this.
[0035] Figure 3 A structural schematic diagram of the wiring device 1 according to an embodiment of the present disclosure is shown. Figure 4 An exploded schematic diagram of the wiring device 1 is shown as shown in FIG. 2. Figure 3 An exploded schematic diagram of the wiring device 1 is shown as shown in FIG. 2. Figure 3 and Figure 4 As shown, the wiring device 1 described herein generally includes a wiring frame 100, the temperature indicating assembly 11 as described above, and a transparent cover plate 12. The wiring frame 100 includes a plurality of wiring holes 110 and a mounting slot 120. The mounting slot 120 is disposed between a pair of wiring holes 110 adjacent to each other among the plurality of wiring holes 110. The temperature indicating assembly 11 is disposed within the mounting slot 120 adjacent to one of the pair of wiring holes 110. The bottom of the thermally conductive portion 111 of the temperature indicating assembly 11 is connected to the side of the mounting slot 120 adjacent to the corresponding wiring hole 110. The transparent cover plate 12 is coupled to the mounting slot 120 and abuts against the temperature indicating assembly 11.
[0036] In some embodiments, a pair of temperature indicating assemblies 11 can be disposed within the mounting slot 120 to respectively indicate the internal temperature of the wiring holes 110 adjacent to opposite sides of the mounting slot 120. It should be appreciated that the temperature indicating assemblies 11 within the mounting slot 120 can be of other suitable number, which is not limited by the present disclosure.
[0037] Figure 5 A partial cross-sectional view of the wiring device 1 according to an embodiment of the present disclosure is shown. In some embodiments, as shown, Figure 5 The wiring device 1 further includes a plurality of terminal frames 130 and a plurality of terminal pins 140. Each of the plurality of terminal frames 130 is disposed in a corresponding wiring hole 110. Each of the plurality of terminal pins 140 is disposed in a corresponding terminal frame 130 and abuts against the inner side of the corresponding terminal frame 130. The bent portion 114 of the thermally conductive portion 111 of the temperature indicating assembly 11 abuts against the outer side of the corresponding terminal frame 130. In the event that the cable and the terminal pin 140 are connected to send loose, the temperature of the terminal pin 140 will rise and the heat will be conducted through the terminal frame 130 to the bent portion 114 in contact therewith, thereby causing the sealed gas within the temperature indicating assembly 11 to expand due to the heat.
[0038] In some embodiments, as an example of the pair of temperature indicating assemblies 11 in Figure 5 The bent portion 114 of the thermally conductive portion 111 of the pair of temperature indicating assemblies 11 abuts against the outer side of the terminal frame 130 on the two sides, respectively, to respectively indicate the temperature of the terminal pin 140 on the two sides. When the top of the sealed portion 112 of the temperature indicating assembly 11 moves by a predetermined distance, it indicates that the corresponding terminal pin 140 temperature is too high and needs to be maintained.
[0039] Figures 6 to 8 A structural schematic view of the transparent cover plate 12 at different angles according to an embodiment of the present disclosure is shown. Figure 9 A partial cross-sectional view of the wiring device 1 according to an embodiment of the present disclosure is shown. In some embodiments, as shown, Figures 6 to 9As shown, the wiring device 1 further includes a fixing hole 150. The fixing hole 150 is disposed at the top of the wiring frame 100 and communicates with the mounting groove 120. The transparent cover plate 12 includes a protruding portion 121. The protruding portion 121 is disposed at the top of the transparent cover plate 12. The protruding portion 121 is adapted to be inserted into the fixing hole 150 along the length direction of the transparent cover plate 12.
[0040] In some embodiments, the fixing hole 150 can be disposed as a rectangular through hole. The protruding portion 121 can be disposed as a boss with rounded corners at the top to facilitate insertion into the fixing hole 150 during pushing of the transparent cover plate 12 into the transparent cover plate 12. It should be understood that other types of heat-conducting portions 111, sealing portions 112 and sealing gas implementations that achieve the above functions can be conceived by those of ordinary skill in the art based on the teachings given in the present disclosure, and these implementations all fall within the scope of the present disclosure.
[0041] With continued reference to Figures 6 to 9 In some embodiments, the wiring device 1 can further include a fixing groove 160. The fixing groove 160 is disposed inside the wiring frame 100 and communicates with the mounting groove 120. The transparent cover plate 12 includes a clamping jaw 122. The clamping jaw 122 is disposed at the bottom of the transparent cover plate 12 and clamps into the fixing groove 160. By disposing the protruding portion 121 and the clamping jaw 122 at the top and the bottom of the transparent cover plate 12 respectively, the transparent cover plate 12 can be reliably fixed at a predetermined position inside the mounting groove 160.
[0042] In some embodiments, the transparent cover plate 12 includes an abutting portion 123. The abutting portion 123 is disposed at one side in the thickness direction of the transparent cover plate 12 and abuts against the temperature indicating assembly 11.
[0043] In some embodiments, as shown in Figure 6 and Figure 9 The abutting portion 123 can include a first abutting portion 1231 and a second abutting portion 1232. The length of the first abutting portion 1231 in the thickness direction of the transparent cover plate 12 is less than the length of the second abutting portion 1232 in the thickness direction of the transparent cover plate 12. The first abutting portion 1231 and the second abutting portion 1232 abut to different positions of the heat-conducting portion 111. For example, the first abutting portion 1231 abuts to the first portion 1111 with a larger peripheral dimension, and the second abutting portion 1232 abuts to the second portion 1112 with a smaller peripheral dimension. With such an arrangement, the abutting portion 123 of the transparent cover plate 12 can reliably fix the heat-conducting portion 111 of the temperature indicating assembly 11 at a predetermined position. In addition, the pressure applied by the abutting portion 123 to the side portion of the temperature indicating assembly 11 can also reinforce the connection between the heat-conducting portion 111 and the sealing portion 112. It should be understood that other types of abutting portions 123 that achieve the above functions can be conceived by those of ordinary skill in the art based on the teachings given in the present disclosure, and these implementations all fall within the scope of the present disclosure.
[0044] In some embodiments, as shown in Figures 5 to 9 For example, the distance between the top of the sealing portion 112 and the bottom of the corresponding terminal 140 is 25 mm when the temperature is 20°C, and is 31-33.5 mm when the working temperature reaches 90-105°C. Therefore, the area on the side of the transparent cover plate 12 away from the temperature indicating assembly 11 corresponding to the position of the top of the sealing portion 112 and up to the position of 31 mm can be painted green to indicate that the temperature of the terminal 140 is normal. Correspondingly, the area of 31-33.5 mm can be painted yellow to indicate that the working temperature of the terminal 140 is high. The area above 33.5 mm can be painted red to indicate that the working temperature of the terminal 140 is very high. With such an arrangement, the deformation of the sealing portion 112 can more intuitively reflect the temperature change, so that maintenance operations can be performed in a timely manner. It should be understood that the above data and color categories are only used for illustrative purposes and do not limit the scope of the present disclosure
[0045] The temperature indicating assembly 11 and the terminal device 1 according to the embodiments of the present disclosure take into account the actual application situation and can meet the temperature measurement needs of different types of electrical equipment. In addition, the temperature indicating assembly 11 according to the embodiments of the present disclosure has a simple structure, low cost, easy processing, and convenient installation, and can enable the electrical equipment to have good safety performance.
[0046] The above has described various embodiments of the present disclosure, and the above description is exemplary and is not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical applications, or improvements to the technology in the market, or to enable other ordinary skilled persons in the art to understand the embodiments disclosed herein.
Claims
1. A temperature indicating assembly (11) characterized by, The temperature indicating assembly (11) comprises: a heat conducting portion (111) comprising a recess (115) provided on an outer surface of the heat conducting portion (111) adjacent to a top of the heat conducting portion (111) and recessed towards an inner side of the heat conducting portion (111); and a sealing portion (112) having a bottom formed with a clamping portion (116) clamped to the recess (115) so that the sealing portion (112) is connected to the top of the heat conducting portion (111), and a sealing gas is provided between the heat conducting portion (111) and the sealing portion (112), which can expand in case of temperature rise of the heat conducting portion (111) to drive the top of the sealing portion (112) to move along a length direction of the sealing portion (112).
2. Temperature indicating assembly (11) according to claim 1, characterized in that The temperature indicating assembly (11) further comprises an extension portion (113) provided at a bottom of the heat conducting portion (111) and extending along a length direction of the heat conducting portion (111).
3. Temperature indicating assembly (11) according to claim 2, characterized in that The temperature indicating assembly (11) further comprises a bending portion (114) provided at an end of the extension portion (113) away from the heat conducting portion (111) and bent outwards relative to the extension portion (113).
4. The temperature indicating assembly (11) according to claim 1, characterized in that The heat conducting portion (111) is in a circular tube shape and comprises a first portion (1111), a second portion (1112) and a transition portion (1113) connected between the first portion (1111) and the second portion (1112), a peripheral dimension of the first portion (1111) is greater than a peripheral dimension of the second portion (1112), and a peripheral dimension of an end of the transition portion (1113) adjacent to the first portion (1111) is greater than a peripheral dimension of an end of the transition portion (1113) adjacent to the second portion (1112).
5. A wiring device (1) characterized by, The wiring device (1) comprises: a wiring frame (100) comprising a plurality of wiring holes (110) and a mounting groove (120) provided between a pair of wiring holes (110) adjacent to each other among the plurality of wiring holes (110); the temperature indicating assembly (11) according to any one of claims 1 to 4 is provided in the mounting groove (120) adjacent to one of the wiring holes (110), a bottom of the heat conducting portion (111) of the temperature indicating assembly (11) is connected to a side of the mounting groove (120) adjacent to the corresponding wiring hole (110); and a transparent cover plate (12) coupled to the mounting groove (120) and abutting against the temperature indicating assembly (11).
6. The wiring device (1) according to claim 5, characterized in that The wiring device (1) further comprises a plurality of terminal frames (130) and a plurality of terminal terminals (140), each of the plurality of terminal frames (130) is arranged in a corresponding terminal hole (110), each of the plurality of terminal terminals (140) is arranged in a corresponding terminal frame (130) and abuts against the inner side of the corresponding terminal frame (130), and the bending part (114) of the heat-conducting part (111) of the temperature indicating assembly (11) abuts against the outer side of the corresponding terminal frame (130).
7. The wiring device (1) according to claim 5, characterized in that The wiring device (1) further comprises a fixing hole (150) arranged at the top of the terminal frame (100) and communicating with the mounting groove (120), and the transparent cover plate (12) comprises a protruding part (121) arranged at the top of the transparent cover plate (12), the protruding part (121) is adapted to be inserted into the fixing hole (150) along the length direction of the transparent cover plate (12).
8. The wiring device (1) according to claim 7, characterized in that The wiring device (1) further comprises a fixing groove (160) arranged inside the terminal frame (100) and communicating with the mounting groove (120), and the transparent cover plate (12) comprises a clamping jaw (122) arranged at the bottom of the transparent cover plate (12) and clamped to the fixing groove (160).
9. The wiring device (1) according to claim 5, characterized in that The transparent cover plate (12) comprises an abutting part (123) arranged on one side in the thickness direction of the transparent cover plate (12) and abutting against the temperature indicating assembly (11).
10. The wiring device (1) according to claim 9, characterized in that The abutting part (123) comprises a first abutting part (1231) and a second abutting part (1232), the length of the first abutting part (1231) in the thickness direction of the transparent cover plate (12) is less than the length of the second abutting part (1232) in the thickness direction of the transparent cover plate (12), and the first abutting part (1231) and the second abutting part (1232) abut to different positions of the heat-conducting part (111).