Fastener

Abstract

The embodiment of the utility model provides a fastener. The fastener includes a head adapted to be screwed; the rod body part is connected with the head part; and the reversible temperature indicating layer is arranged on one side, deviating from the rod body part, of the head part so as to indicate the temperature of the head part.

Description

Technical Field

[0001] Embodiments of the present disclosure relate generally to the field of electrical equipment technology, and more particularly, to fasteners. Background Art

[0002] Fasteners enable electrical connections between electrical equipment and busbars or cables. For example, fasteners include terminal screws. However, during wiring, operators may experience abnormal heating at the connection site due to insufficient tightening or other factors. If these hazards are not promptly identified and addressed, they can lead to equipment damage and other problems. Utility Model Content

[0003] An object of the present disclosure is to provide a fastener to at least partially solve the above-mentioned problems.

[0004] In one aspect of the present disclosure, a fastener is provided, comprising a head adapted to be screwed; a shaft connected to the head; and a reversible temperature indicating layer disposed on a side of the head facing away from the shaft to indicate the temperature of the head.

[0005] According to the embodiments of the present disclosure, since the reversible temperature-indicating layer is located on the side of the head facing away from the rod body, it changes color as the temperature of the head changes. This not only indicates the head's temperature but also facilitates timely detection by personnel, thereby indicating potential risks to the customer. Furthermore, the reversible temperature-indicating layer is easily recyclable, restoring its color when the temperature returns to its initial state. Compared to a single temperature indication, the reversible design enables multiple uses, facilitating temperature monitoring of equipment or environments, such as in electrical equipment, engines, or heating systems.

[0006] In some embodiments, the head portion includes a mounting groove, the mounting groove is provided on a side of the head portion facing away from the rod body portion, and the reversible temperature indicating layer is provided in the mounting groove.

[0007] In some embodiments, the mounting groove comprises a circular groove, and the reversible temperature indicating layer is disposed on the bottom of the circular groove.

[0008] In some embodiments, the reversible thermometric layer is sintered and disposed in the mounting groove.

[0009] In some embodiments, the head further includes an operating slot for screwing the fastener, and the operating slot is provided on a side of the head facing away from the shaft portion.

[0010] In some embodiments, the installation slot and the operating slot are staggered.

[0011] In some embodiments, the installation groove is adjacent to and communicates with the operation groove, and the groove bottom of the installation groove is closer to the rod body than the groove bottom of the operation groove in the direction in which the head points to the rod body.

[0012] In some embodiments, the operation groove comprises a first portion and a second portion which are arranged to cross in the radial direction of the rod body, and the installation groove is located at the crossing position of the first portion and the second portion.

[0013] In some embodiments, the fastener further comprises a gasket, the rod body passes through the gasket, and the gasket is in abutment with the head.

[0014] In some embodiments, the gasket comprises a through hole for the rod body to pass through, and the size of the portion of the rod body away from the head is greater than the size of the through hole to prevent the rod body from falling out of the through hole.

[0015] It should be understood that the content described in this part is not intended to limit the key features or important features of the embodiments of the present disclosure, nor is it 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

[0016] The above and other features, advantages, and aspects of embodiments of the present disclosure will become more apparent by describing in detail the following embodiments with reference to the attached drawings. In the drawings, the same or similar reference numerals refer to the same or similar elements, in which:

[0017] Figure 1 A structural schematic diagram of a fastener according to some embodiments of the present disclosure is shown;

[0018] Figure 2 A structural schematic diagram of the fastener shown along another viewing angle is shown. Figure 1 A structural schematic diagram of the fastener shown along another viewing angle is shown.

[0019] LEGEND OF DRAWINGS

[0020] 100 is a fastener;

[0021] 1 is a head, 11 is an installation groove, 12 is an operation groove, 121 is a first portion, and 122 is a second portion;

[0022] 2 is a rod body, and 3 is a reversible temperature indicating layer;

[0023] 4 is a gasket, 41 is a through hole, and 42 is a limiting portion;

[0024] X is the direction in which the head points to the rod body. DETAILED DESCRIPTION

[0025] The preferred embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although preferred embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided to make the present disclosure more thorough and complete, and to fully convey the scope of the present disclosure to those skilled in the art.

[0026] As used herein, the term "including" and its variations represent open inclusion, i.e., "including but not limited to." Unless otherwise stated, the term "or" means "and / or." 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 "first," "second," etc. may refer to different or identical objects.

[0027] As described above, fasteners can realize electrical connection between electrical equipment and busbars or cables. For example, fasteners can include wiring screws. However, during the wiring process, due to the existence of other reasons such as not tightening, the wiring parts may become abnormally hot. If the hidden dangers are not discovered and eliminated in time, it will cause equipment damage and other problems. The embodiment of the present disclosure provides a fastener 100 to at least partially solve the above problems. In the following, Figure 1 and Figure 2 The principles of the present disclosure are described.

[0028] Figure 1 Schematic diagram of the structure of a fastener 100 according to some embodiments of the present disclosure is shown. Figure 2 Shown Figure 1 The fastener 100 is shown in another structural diagram from another perspective. Figure 1 and Figure 2 As shown, the fastener 100 described herein generally includes a head 1 , a shank 2 , a reversible thermometric layer 3 and a gasket 4 .

[0029] refer to Figure 1 and Figure 2In some embodiments, the head 1 is connected to the rod body 2. The head 1 is suitable for being screwed. The reversible temperature indicating layer 3 is provided on the side of the head 1 facing away from the rod body 2 to indicate the temperature of the head 1. With the above configuration, since the reversible temperature indicating layer 3 is located on the side of the head 1 facing away from the rod body 2, the reversible temperature indicating layer 3 can change color as the temperature on the head 1 changes. On the one hand, it is used to indicate the temperature of the head 1; on the other hand, it is convenient for personnel to discover in time to indicate the potential risks of customers. In addition, the reversible temperature indicating layer 3 is easy to recycle, and the color can be restored when the temperature returns to the initial state. Compared with single temperature indication, the reversible design enables it to be used multiple times, which is convenient for indicating temperature changes of equipment or environment, such as in electrical equipment, engines or heating systems.

[0030] Continue to refer Figure 2 In some embodiments, the head portion 1 may include a mounting groove 11. The mounting groove 11 may be located on a side of the head portion 1 facing away from the body portion 2, and a reversible temperature indicating layer 3 may be disposed within the mounting groove 11. Protected by the mounting groove 11, the reversible temperature indicating layer 3 is unlikely to be accidentally touched, thereby preventing damage to the reversible temperature indicating layer 3.

[0031] The reversible temperature indicating layer 3 according to the embodiment of the present disclosure can be made of various types of processes and materials that are currently known or will be available in the future, as long as it can cyclically indicate the temperature change of the device or environment. The embodiment of the present disclosure is not limited to this.

[0032] For example, in some embodiments, the reversible thermo-indicating layer 3 can be disposed on the head 1 using a color-shifting enamel process. This process is a specialized enamel technology that can produce a rich and varied color effect at different temperatures. For example, the reversible thermo-indicating layer 3 can be sintered within the mounting groove 11. Enamel powder containing specific metal oxides or other chemical components is evenly coated on the head 1 to achieve temperature-sensitive color changes, and then sintered at high temperature.

[0033] The reversible temperature-indicating layer 3 manufactured using this method can, on the one hand, display different colors as the screw temperature changes, visually indicating the temperature range of the head 1. For example, it can display red at 100°C. On the other hand, the reversible temperature-indicating layer 3 is stable and difficult to fall off the head 1. In addition, the mature process of the color-changing enamel and the low material cost facilitate cost control.

[0034] Continue to refer Figure 2In some embodiments, the shape of the mounting groove 11 is not limited. For example, the mounting groove 11 may include a circular groove, or alternatively, a rectangular groove. Furthermore, the reversible thermo-indicating layer 3 may be disposed on the bottom of the circular groove, but is not limited to the bottom. For example, the reversible thermo-indicating layer 3 may also be disposed on the sidewalls of the circular groove to enhance the visual effect.

[0035] Continue to refer Figure 2 In some embodiments, along the direction X from the head portion 1 to the body portion 2, the thickness of the reversible thermometric layer 3 is less than or equal to the depth of the mounting groove 11. This saves material costs and prevents the reversible thermometric layer 3 from protruding out of the mounting groove 11, thereby preventing damage to the reversible thermometric layer 3.

[0036] Continue to refer Figure 2 In some embodiments, the head 1 further includes an operating slot 12. The operating slot 12 can be provided on a side of the head 1 facing away from the shank 2, for tightening the fastener 100 using a tool.

[0037] Continue to refer Figure 2 To prevent damage to the reversible thermo-indicating layer 3 by a tool during tightening of the fastener 100, in some embodiments, the installation slot 11 and the operating slot 12 may be staggered. In other embodiments, the installation slot 11 may be adjacent to and connected to the operating slot 12, and along the direction X from the head 1 to the shaft 2, the bottom of the installation slot 11 is closer to the shaft 2 than the bottom of the operating slot 12. It can be understood that the blocking effect of the operating slot 12 prevents tools from being inserted into the installation slot 11 and potentially damaging the reversible thermo-indicating layer 3.

[0038] Continue to refer Figure 2 Furthermore, the operating groove 12 may include a first portion 121 and a second portion 122 intersecting along the radial direction of the rod body 2, and the mounting groove 11 is located at the intersection of the first portion 121 and the second portion 122. Because the first portion 121 and the second portion 122 are used to accommodate tools, the mounting groove 11 is located at the intersection of the first portion 121 and the second portion 122. The tool can be inserted into the first portion 121 and the second portion 122, thereby preventing the tool from being inserted into the mounting groove 11 and damaging the reversible thermometric layer 3. Of course, the mounting groove 11 can also be located at any position within the first portion 121 or the second portion 122, without limitation, as long as damage to the reversible thermometric layer 3 is avoided.

[0039] Continue to refer Figure 2Furthermore, at least one of the first portion 121 and the second portion 122 may include a pair of blocking surfaces, one of which is located on one side of the mounting slot 11 and the other on the opposite side of the mounting slot 11. The paired blocking surfaces can prevent tools from extending into the mounting slot 11. For example, along the direction X from the head 1 to the shaft 2, the paired blocking surfaces can be arranged at an angle, and the distance between the paired blocking surfaces gradually decreases, so that the tool can be blocked by the blocking surfaces to prevent damage to the reversible thermometric layer 3. It should be understood that in other embodiments, the first portion 121 and the second portion 122 can adopt any other appropriate structure to prevent tools from extending into the mounting slot 11.

[0040] In addition, under the premise of ensuring a good indication effect, the size of the installation groove 11 can be appropriately reduced and made smaller than the end size of the tool, thereby preventing the tool from being inserted into the installation groove 11 and damaging the reversible temperature indicating layer 3.

[0041] Continue to refer Figures 1 to 2 In some embodiments, the shaft portion 2 may pass through the washer 4, and the washer 4 may abut against the head 1. The washer 4 can improve the tightness between the fastener 100 and the object to be connected, thereby preventing the fastener 100 from loosening under vibration or other dynamic loads.

[0042] Continue to refer Figures 1 to 2 In some embodiments, the gasket 4 may include a through-hole 41 for the rod body 2 to pass through. The size of the portion of the rod body 2 facing away from the head 1 may be larger than the size of the through-hole 41, thereby preventing the rod body 2 from falling out of the through-hole 41. For example, the gasket 4 may be bent after the rod body 2 passes through the through-hole 41, so that the size of the thread on the rod body 2 is larger than the size of the through-hole 41, thereby preventing the rod body 2 from falling out of the through-hole 41.

[0043] Furthermore, a pair of stoppers 42 is provided on a side of the washer 4 facing away from the head 1. One pair of stoppers 42 is provided on one side of the shaft 2, and the other pair of stoppers 42 is provided on the other side of the shaft 2. Thus, when the fastener 100 comprises a terminal screw, each pair of stoppers 42 can press the cable against the terminal block, thereby forming a stable and secure connection.

[0044] The reversible thermometric layer 3 according to the embodiment of the present disclosure can be applied to various fasteners to at least partially solve the above problems. It should be understood that the reversible thermometric layer according to the embodiment of the present disclosure can also be applied to other components, and the embodiment of the present disclosure is not limited thereto.

[0045] Having described above several embodiments of the disclosure, any modifications and variations that fall within the scope of the described embodiments are also contemplated. It is also contemplated that the application covered by the claims extends to any alternative embodiment, adaptations, or variations of the various embodiments described above, and to any and all equivalents. The terms "comprises", "comprising", "comprised of" and "comprising" when used in this specification are taken to specify the presence of stated features, integers, steps or components but do not preclude the presence or addition of one or more other features, integers, steps, components or groups thereof.

Claims

1. A fastener (100), characterized in that: The fastener (100) comprises: A head (1) adapted to be screwed; A rod body (2) connected to the head (1); and A reversible temperature indicating layer (3) is arranged on a side of the head (1) facing away from the rod body (2) to indicate the temperature of the head (1).

2. The fastener (100) according to claim 1, characterized in that The head (1) comprises a mounting groove (11), the mounting groove (11) being arranged on a side of the head (1) facing away from the rod body (2), and the reversible temperature indicating layer (3) being arranged in the mounting groove (11).

3. The fastener (100) according to claim 2, characterized in that The installation groove (11) comprises a circular groove, and the reversible temperature indicating layer (3) is arranged on the groove bottom of the circular groove.

4. The fastener (100) according to claim 2, characterized in that The reversible temperature indicating layer (3) is sintered and arranged in the installation groove (11).

5. The fastener (100) according to claim 2, characterized in that The head (1) further comprises an operating slot (12) for screwing the fastener (100), and the operating slot (12) is arranged on a side of the head (1) facing away from the rod body (2).

6. The fastener (100) according to claim 5, characterized in that The installation groove (11) and the operation groove (12) are staggered.

7. The fastener (100) according to claim 5, characterized in that The installation groove (11) is adjacent to and communicates with the operating groove (12), and points in a direction (X) from the head portion (1) to the rod body portion (2). The bottom of the installation groove (11) is closer to the rod body portion (2) than the bottom of the operating groove (12).

8. The fastener (100) according to claim 7, characterized in that The operating groove (12) comprises a first portion (121) and a second portion (122) arranged crosswise along the radial direction of the rod body (2), and the mounting groove (11) is located at the intersection of the first portion (121) and the second portion (122).

9. The fastener (100) according to claim 1, characterized in that The fastener (100) further comprises a gasket (4), the rod body (2) passes through the gasket (4), and the gasket (4) abuts against the head (1).

10. The fastener (100) according to claim 9, characterized in that The gasket (4) comprises a through hole (41) for the rod body (2) to pass through, and the size of the portion of the rod body (2) away from the head (1) is larger than the size of the through hole (41) to prevent the rod body (2) from falling off from the through hole (41).

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