Locking nut with insulating property
By designing the combination of the grounding connection and insulating sleeve in the lock nut, the leakage and loosening of the lock nut are solved, and the dual protection of insulation and grounding is achieved, which improves the safety of use.
Patent Information
- Application Number
- CN202422247526.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-13
- Publication Date
- 2025-07-04
- Estimated Expiration
- 2034-09-13
AI Technical Summary
The existing lock nuts have electric leakage during use, which cannot effectively prevent static electricity, and are easy to loosen, which poses safety hazards.
A lock nut with its own insulation performance is designed. The side of the nut body is equipped with a grounding connection part, the inner wall is threaded, and an insulating sleeve is equipped with a clearance connection between the nut body. The locking teeth are designed to prevent loosening and are equipped with grounding parts to enhance the grounding performance.
It achieves good insulation performance, prevents leakage and static damage, enhances the grounding function, prevents loosening, and is easy to use.
Smart Images
Figure CN223062876U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the fields of cable connectors, conduit connectors, and lock nuts for threaded conduits, and particularly relates to a lock nut with self-insulating properties. Background Art
[0002] Cable connectors, conduit connectors, and threaded conduits usually need to be fixed to electrical equipment through lock nuts. Existing lock nuts only achieve their most basic functions, namely the function of connection and fixation. During use, some may have leakage problems, some cannot be well grounded and do not have a grounding function, thus cannot protect the circuit system well and cannot prevent static electricity. In addition, since the lock nut is threadedly fixed to the cable connector, conduit connector, and threaded conduit, even if the lock nut is tightened during installation, it may become loose due to vibration during daily use, posing a great safety hazard. Summary of the Utility Model
[0003] Therefore, it is necessary to provide a lock nut with self-insulating properties to solve the problems of leakage, inability to prevent static electricity and protect the circuit, and easy loosening of the lock nuts for cable connectors, conduit connectors, and threaded conduits in the prior art.
[0004] To achieve the above object, the inventor provides a lock nut with self-insulating properties, including:
[0005] A nut body, at least one grounding connection part is provided on the side surface of the nut body, and the grounding connection part is used to connect to a grounding piece; internal threads are provided on the inner wall of the nut body;
[0006] An insulating sleeve, an extension part is formed by protruding radially from the upper end surface of the insulating sleeve. The insulating sleeve is sleeved inside the nut body, and there is a gap between the insulating sleeve and the inner wall of the nut body, and the extension part abuts against the upper end surface of the nut body and is connected to the upper end surface of the nut body through a connection structure.
[0007] In some embodiments, a plurality of teeth are provided on the lower end surface of the nut body, and the plurality of teeth are arranged equidistantly along the circumference of the nut body; the teeth include an anti-loosening surface, and the anti-loosening surface faces away from the tightening direction of the nut body.
[0008] In some embodiments, the teeth further include a scraping surface, the scraping surface is along the tightening direction of the nut body, opposite to the anti-loosening surface, and is inclined.
[0009] In some embodiments, the grounding piece includes a grounding wire, and the grounding wire is connected to the grounding connection part.
[0010] In some embodiments, the grounding member includes a grounding pressure plate and a grounding wire, and the grounding pressure plate is provided with a grounding wire connection portion; the grounding pressure plate is connected to the grounding connection portion, and the grounding wire is connected to the grounding wire connection portion.
[0011] In some embodiments, the grounding connection portion includes a first threaded hole and a first bolt provided on the side surface of the nut body, and the grounding member is fixed to the first threaded hole by the first bolt.
[0012] In some embodiments, the extension portion is in a circular ring shape and covers the upper end surface of the nut body.
[0013] In some embodiments, the connection structure is a detachable connection structure.
[0014] In some embodiments, the detachable connection structure includes a buckle provided at the extension portion and a card slot provided at the upper end surface of the nut body, and the buckle is engaged in the card slot.
[0015] In some embodiments, the connection structure further includes a disassembly hole provided at the lower end surface of the nut body, and the disassembly hole penetrates through the bottom surface of the card slot.
[0016] Different from the prior art, for the lock nut with self-insulating performance described in the above technical solution, at least one grounding connection portion is provided on the side surface of the nut body. Therefore, the grounding pressure plate can be installed on the grounding connection portion, and then the grounding wire can be locked on the grounding wire connection portion of the grounding pressure plate, so as to achieve better grounding performance, which is beneficial to preventing short circuits in the circuit system and reducing the potential risk of static electricity damage; an insulating sleeve is provided, and the insulating sleeve is sleeved inside the nut body and has a gap with the nut body. The cable joint, conduit joint, and threaded conduit can be sleeved at the gap and threadedly connected to the nut body, and the insulating sleeve is inserted into the cable joint, conduit joint, and threaded conduit. The cable passes through the insulating sleeve, which can well play an insulating function and avoid the situation of electric leakage, and there is no need to avoid or remove the insulating sleeve during use, so it is very convenient to use. Therefore, the lock nut with self-insulating performance has good insulating performance and is convenient to use.
[0017] The above relevant description of the utility model content is only an overview of the technical solution of this application. In order to enable those of ordinary skill in the art to more clearly understand the technical solution of this application, and then can be implemented according to the content recorded in the description and the drawings, and in order to make the above objects, other objects, features and advantages of this application more easily understood, the following is described in conjunction with the specific implementation manners and drawings of this application. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] The accompanying drawings are only used to illustrate the principles, implementation methods, applications, features, effects, etc. of the specific embodiments of the present application and other related contents, and should not be considered as a limitation to the present application.
[0019] In the drawings of the specification:
[0020] Figure 1 It is a structural diagram of the locking nut with self-insulating performance described in the specific embodiment;
[0021] Figure 2 It is a structural diagram of the locking nut with self-insulating performance described in the specific embodiment from another angle;
[0022] Figure 3 It is a structural diagram of the nut body described in the specific embodiment;
[0023] Figure 4 It is a side view of the insulating sleeve described in the specific embodiment;
[0024] Figure 5 It is a structural diagram of the grounding pressure plate described in the specific embodiment;
[0025] The descriptions of the reference numerals involved in the above-mentioned drawings are as follows:
[0026] 1. Nut body;
[0027] 101. Tooth; 1010. Anti-loosening surface; 1011. Scratching surface;
[0028] 102. First threaded hole;
[0029] 103. First bolt;
[0030] 104. Card slot;
[0031] 105. Disassembly hole;
[0032] 106. Thread;
[0033] 2. Insulating sleeve;
[0034] 200. Extension part;
[0035] 201. Buckle;
[0036] 3. Grounding pressure plate;
[0037] 300. Second threaded hole;
[0038] 301. Second bolt. Specific embodiment
[0039] To illustrate in detail the possible application scenarios, technical principles, specific implementable solutions, achievable objectives and effects of this application, etc., the following will be described in detail with reference to the specific examples listed and in conjunction with the accompanying drawings. The embodiments described herein are only used to more clearly illustrate the technical solutions of this application, so they are only examples and cannot be used to limit the protection scope of this application.
[0040] Referring to "embodiment" in this text means that the specific features, structures or characteristics described in connection with the embodiment may be included in at least one embodiment of this application. The term "embodiment" that appears in various positions in the specification does not necessarily refer to the same embodiment, nor does it particularly limit its independence or relevance to other embodiments. In principle, in this application, as long as there is no technical contradiction or conflict, the technical features mentioned in each embodiment can be combined in any way to form corresponding implementable technical solutions.
[0041] Unless otherwise defined, the meanings of the technical terms used in this text are the same as those generally understood by those skilled in the technical field to which this application belongs; the use of the relevant terms in this text is only to describe specific embodiments and is not intended to limit this application.
[0042] In the description of this application, the term "and / or" is an expression used to describe the logical relationship between objects, indicating that there can be three relationships. For example, A and / or B means: there is A, there is B, and there is both A and B at the same time. In addition, the character " / " in this text generally represents an "or" logical relationship between the associated objects before and after.
[0043] In this application, terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual quantity, primary or secondary, or order relationship between these entities or operations.
[0044] Without more limitations, in this application, the use of "including", "comprising", "having" or other similar expressions in a statement is intended to cover non-exclusive inclusion. These expressions do not exclude the possibility that there may be additional elements in the process, method or product including the described elements, so that a process, method or product including a series of elements may include not only those defined elements, but also other elements not explicitly listed, or elements inherent to such a process, method or product.
[0045] Similar to the understanding in the "Examination Guidelines", in this application, expressions such as "greater than", "less than", "exceeding", etc. are understood to exclude the base number; expressions such as "above", "below", "within", etc. are understood to include the base number. In addition, in the description of the embodiments of this application, the meaning of "a plurality of" is two or more (including two), and similar expressions related to "many" are also understood in this way, such as "multiple groups", "multiple times", etc., unless otherwise clearly and specifically defined.
[0046] In the description of the embodiments of this application, the spatially related expressions used, such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "perpendicular", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the specific embodiment or the drawings. It is only for the convenience of describing the specific embodiments of this application or for the reader to understand, rather than indicating or implying that the device or component referred to must have a specific position, a specific orientation, or be constructed or operated in a specific orientation. Therefore, it cannot be understood as a limitation to the embodiments of this application.
[0047] Unless otherwise clearly specified or limited, in the description of the embodiments of this application, the terms such as "installed", "connected", "joined", "fixed", "set", etc. should be understood in a broad sense. For example, the "connection" can be a fixed connection, a detachable connection, or an integral setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be directly connected, or indirectly connected through an intermediate medium; it can be the communication inside two components or the interaction relationship between two components. For those skilled in the art to which this application pertains, the specific meanings of the above terms in the embodiments of this application can be understood according to specific circumstances.
[0048] Cable connectors, conduit connectors, and threaded conduits usually need to be fixed to electrical equipment through lock nuts. Existing lock nuts only achieve their most basic functions, namely the function of connection and fixation. During use, some may have leakage problems, some cannot be well grounded and do not have a grounding function, thus cannot well protect the circuit system and cannot prevent static electricity. In addition, since the lock nut is threadedly fixed to the cable connector, conduit connector, and threaded conduit, even if the lock nut is tightened during installation, it may become loose due to vibration during daily use, posing a relatively large safety hazard.
[0049] To this end, the present application provides a lock nut with self-insulating properties, which is usually used to fix cable joints, conduit joints, and threaded conduits to electrical equipment, playing a role of fixation and connection. At the same time, it provides a better grounding function, preventing potential risks of short circuits and electrostatic damage in the circuit system. It has the properties of anti-loosening and insulation, and can provide safe and reliable locking and grounding performance, while taking into account the insulation performance.
[0050] Please refer to Figure 1 、 Figure 2 In a specific embodiment, the lock nut with self-insulating properties includes a nut body 1 and an insulating sleeve 2. At least one grounding connection part is provided on the side surface of the nut body 1, and the grounding connection part is used to connect a grounding piece; a thread 106 is provided on the inner wall of the nut body 1. The inner surface (inner wall) of the nut body 1 has a thread 106, which plays a role in locking and fixing the cable joint, conduit joint or threaded conduit. The upper end surface of the insulating sleeve 2 protrudes radially to form an extension part 200. The insulating sleeve 2 is sleeved inside the nut body 1, and there is a gap between the insulating sleeve 2 and the inner wall of the nut body 1. And the extension part 200 abuts against the upper end surface of the nut body 1 and is connected to the upper end surface of the nut body 1 through a connection structure.
[0051] For the lock nut with self-insulating properties, at least one grounding connection part is provided on the side surface of its nut body 1, an insulating sleeve 2 is provided and the insulating sleeve 2 is sleeved inside the nut body 1, and there is a gap between the insulating sleeve 2 and the nut body 1. The cable joint, conduit joint, and threaded conduit can be sleeved at the gap and threadedly connected to the nut body 1, while the insulating sleeve 2 is inserted into the cable joint, conduit joint, and threaded conduit, and the cable passes through the insulating sleeve 2, which can well play the insulating function and avoid the situation of electric leakage. And when in use, there is no need to avoid the insulating sleeve 2 or remove the insulating sleeve 2 for use, and the lock nut with self-insulating properties is very convenient to use.
[0052] Please refer to Figure 2 In some embodiments, a plurality of teeth 101 are provided on the lower end surface of the nut body 1, and the plurality of teeth 101 are arranged equidistantly along the circumference of the nut body 1. Such a setting can ensure uniform stress at each place. The tooth 101 includes an anti-loosening surface 1010, and the anti-loosening surface 1010 faces away from the tightening direction of the nut body 1. It can play the role of getting tighter and tighter when locked, and can also prevent loosening due to vibration. Therefore, the lock nut with self-insulating properties can provide reliable locking and provide insulation performance. The tooth 101 is a radial tooth shape arranged along the circumference of the nut body 1, and the tooth shape has an angle, that is, it can play the role of getting tighter and tighter when locked, and can also prevent loosening due to vibration. When being vibrated, it can play the role of preventing loosening.
[0053] In some embodiments, the locking teeth 101 further include a scraping surface 1011. The scraping surface 1011 is along the tightening direction of the nut body 1, opposite to the anti-loosening surface 1010, and is inclined. Such a scraping surface 1011 can scrape off the surface treatment (such as spray coating) on the electrical equipment or the housing when the nut body 1 is locked, so that the locking nut is in direct contact with the electrical equipment or the housing, achieving better contact grounding performance.
[0054] In some embodiments, the grounding member includes a grounding wire, and the grounding wire is connected to the grounding connection portion, so that the traditional cable connectors, conduit connectors, and threaded conduits with grounding wires can be grounded.
[0055] In addition, a grounding pressure plate 3 can be provided. Please refer to Figure 1 , in some embodiments, the grounding member includes a grounding pressure plate 3 and a grounding wire. The grounding pressure plate 3 is provided with a grounding wire connection portion; the grounding pressure plate 3 is connected to the grounding connection portion, and the grounding wire is connected to the grounding wire connection portion. Therefore, the grounding pressure plate 3 can be installed on the grounding connection portion, and then the grounding wire can be locked on the grounding wire connection portion of the grounding pressure plate 3, so as to achieve better grounding performance, which is beneficial to preventing short circuits in the circuit system and reducing the potential risk of static damage. A grounding pressure plate 3 is provided on the nut body 1 to increase the grounding performance. Compared with the traditional method of directly using screws to lock the grounding wire in the locking nut, this grounding performance is better; good grounding performance is taken into account at the same time.
[0056] Please refer to Figure 1 , in some embodiments, the grounding connection portion includes a first threaded hole 102 and a first bolt 103 provided on the side surface of the nut body 1. The grounding member is fixed to the first threaded hole 102 through the first bolt 103. Specifically, the grounding pressure plate 3 is provided with a mounting hole, and the first bolt 103 passes through the mounting hole to mount the grounding pressure plate 3 at the first threaded hole 102.
[0057] Please refer to Figure 1 and Figure 5 , in some embodiments, the grounding wire connection portion includes a second threaded hole 300 and a second bolt 301 provided on the grounding pressure plate 3.
[0058] In a further embodiment, the grounding pressure plate 3 is provided with a U-shaped groove, and the second threaded hole 300 is provided on the side wall of the U-shaped groove and penetrates through the side wall of the grounding pressure plate 3. The grounding wire can be inserted into the U-shaped groove, and then the second bolt 301 is screwed into the second threaded hole 300 until the grounding wire is pressed tightly in the U-shaped groove.
[0059] In some embodiments, there are at least two grounding connection portions. For example, three grounding connection portions can be provided, and the three grounding connection portions equally divide the circumference of the nut body 1.
[0060] In some embodiments, one of the ground connection parts is connected to a ground pressure plate 3, and the other ground connection part is not connected to the ground pressure plate 3; the ground wire is connected to the ground wire connection part of the ground pressure plate 3 or to the ground connection part that is not connected to the ground pressure plate 3. That is, according to requirements, the ground wire can be directly installed at a ground connection part that is not connected to the ground pressure plate 3, or the ground pressure plate 3 can be locked onto the first threaded hole 102 of one of the ground connection parts, and then the ground wire can be locked onto the ground wire connection part of the ground pressure plate 3, achieving better grounding performance, and it can be specifically used according to actual requirements.
[0061] Please refer to Figure 1 , in some embodiments, the extension part 200 is in a circular ring shape and covers the upper end face of the nut body 1. That is, the extension part 200 wraps the entire upper end face of the nut body 1, can be insulated in all directions, and it can be regarded that the inner wall of the extension part 200 and the end face of the insulating sleeve 2 are connected together.
[0062] In some embodiments, the connection structure can be a detachable connection structure, so that a new insulating sleeve 2 can be replaced after the insulating sleeve 2 ages.
[0063] Please refer to Figure 3 and Figure 4 , in some embodiments, the detachable connection structure can be a snap structure. Please refer to Figure 3 and Figure 4 , the detachable connection structure includes a snap 201 provided at the extension part 200 and a slot 104 provided at the upper end face of the nut body 1. The snap 201 is engaged in the slot 104, and the insulating sleeve 2 is assembled and fixed to the nut body 1 through the snap 201, thus forming an integral body and not requiring disassembly during use.
[0064] For the convenience of disassembling and replacing the insulating sleeve 2, please refer to Figure 2 and Figure 3 , in some embodiments, the connection structure further includes a disassembly hole 105 provided at the lower end face of the nut body 1. The disassembly hole 105 penetrates the bottom surface of the slot 104, and the user can pry the snap 201 through the disassembly hole 105 with a screwdriver, thereby disassembling the insulating sleeve 2 from the slot 104.
[0065] In some embodiments, there are three connection structures, and the three connection structures are arranged at equal intervals around the circumference of the insulating sleeve 2, so that the insulating sleeve 2 can be stably installed at the nut body 1.
[0066] In summary, compared with the existing products in the market, the present application can meet various requirements under different usage conditions simultaneously. It is not necessary to disassemble or avoid installing and fixing the insulating sleeve 2, and the installation is convenient. It can provide excellent insulation performance, and can stably fix the cable joint, conduit joint, and threaded conduit on the electrical equipment. At the same time, it is equipped with a grounding pressure plate 3, having better grounding performance. The radial tooth-shaped feature can not only prevent loosening due to vibration but also provide grounding performance.
[0067] Finally, it should be noted that although the above embodiments have been described in the text and drawings of the specification of the present application, the patent protection scope of the present application cannot be limited thereby. Any technical solution obtained by replacing or modifying an equivalent structure or equivalent process based on the essential concept of the present application and using the content recorded in the text and drawings of the specification of the present application, as well as directly or indirectly implementing the technical solutions of the above embodiments in other related technical fields, etc., are all included in the patent protection scope of the present application.
Claims
1. A lock nut with self-insulating properties, characterized in that, Comprising: A nut body, at least one grounding connection part is provided on the side surface of the nut body, and the grounding connection part is used to connect a grounding piece; a thread is provided on the inner wall of the nut body; An insulating sleeve, an extension part is formed by radially protruding from the upper end surface of the insulating sleeve. The insulating sleeve is sleeved in the nut body, and a gap is left between the insulating sleeve and the inner wall of the nut body, and the extension part abuts against the upper end surface of the nut body and is connected to the upper end surface of the nut body through a connection structure.
2. The self-insulating locknut according to claim 1, wherein, A plurality of teeth are provided on the lower end surface of the nut body, and the plurality of teeth are arranged equidistantly along the circumference of the nut body; the teeth include an anti-loosening surface, and the anti-loosening surface faces away from the screwing direction of the nut body.
3. The self-insulating lock nut according to claim 2, characterized in that, The teeth further include a scraping surface, the scraping surface is in the screwing direction of the nut body, is opposite to the anti-loosening surface, and is inclined.
4. The self-insulating locknut according to claim 1, wherein, The grounding piece includes a grounding wire, and the grounding wire is connected to the grounding connection part.
5. The self-insulating lock nut according to claim 1, wherein, The grounding piece includes a grounding pressing plate and a grounding wire, and the grounding pressing plate is provided with a grounding wire connection part; the grounding pressing plate is connected to the grounding connection part, and the grounding wire is connected to the grounding wire connection part.
6. The self-insulating lock nut according to claim 1, 4 or 5, characterized in that, The grounding connection part includes a first threaded hole and a first bolt provided on the side surface of the nut body, and the grounding piece is fixed to the first threaded hole through the first bolt.
7. The self-insulating locknut according to claim 1, wherein The extension part is in a circular ring shape and covers the upper end surface of the nut body.
8. The self-insulating locknut according to claim 1, wherein The connection structure is a detachable connection structure.
9. The self-insulating lock nut according to claim 8, wherein, The detachable connection structure includes a buckle provided on the extension part and a clamping groove provided on the upper end surface of the nut body, and the buckle is clamped in the clamping groove.
10. The self-insulating locknut according to claim 9, characterized in that, The connection structure further includes a disassembly hole provided on the lower end surface of the nut body, and the disassembly hole penetrates the bottom surface of the clamping groove.