Positionable locking nut
Patent Information
- Application Number
- CN202522477922.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-21
- Publication Date
- 2026-11-03
- Estimated Expiration
- 2035-11-21
AI Technical Summary
Existing nuts are prone to loosening in high-frequency vibration environments and cannot be kept tight.
The design incorporates locking components, internal hexagonal locating pins, T-shaped locking screw holes, concealed grooves, and friction grooves. It utilizes the friction between the nylon sleeve and the screw for self-locking, and uses the internal hexagonal locating pins and T-shaped locking screw holes to position the nut base and the screw. The friction grooves enhance the friction between the connecting seat and the contact platform.
It achieves self-locking and anti-loosening of the nut in high-frequency vibration scenarios, enhances the stability and durability of the connection, prevents oxidation, and extends service life.
Smart Images

Figure CN224932030U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of fastener technology, and relates to a nut, and more particularly to a nut that can be positioned and locked. Background Technology
[0002] A nut, commonly known as a bolt or screw, is a mechanical part used in conjunction with a bolt or screw to achieve a fastening effect through its internal threads. As an essential component of all manufacturing machinery, its core function is to tightly connect mechanical equipment.
[0003] For example, Chinese patent literature discloses a nut [Application No.: 202323665071.7; Authorization Announcement No.: CN222209228U], which includes a connecting part and a mating part. The mating part is sleeved on the outside of the connecting part. The inner side wall of the connecting part has a threaded structure for connecting with a pipeline. The outer side wall of the mating part is provided with a tightening structure for cooperating with an installation tool to tighten the nut. The material strength of the mating part is greater than that of the connecting part.
[0004] The aforementioned nut can solve the problem of stripping the threads when tightening nuts with tightening tools in the prior art. However, it does not have a locking function, and the nut is prone to loosening in high-frequency vibration environments, making it impossible to achieve continuous tightening. Summary of the Invention
[0005] The purpose of this invention is to address the aforementioned problems in the existing technology by providing a nut that can be positioned and locked.
[0006] The objective of this utility model can be achieved through the following technical solution: a lockable nut, including a connecting seat, a nut base connected to the top of the connecting seat, a locking member connected to the top of the nut base, the locking member including a locking ring, an embedding groove formed at the bottom of the inner wall of the locking ring, a nylon sleeve embedded in the embedding groove, and a plurality of T-shaped locking screw holes formed through the outer side of the nut base, the inner wall of the T-shaped locking screw holes being provided with internal hexagonal locating pins.
[0007] This lockable nut, through the combined use of a locking element, an internal hexagonal locating pin, a T-shaped locking screw hole, a hidden groove, and a friction groove, offers the advantage of locking. The nylon sleeve utilizes the friction between it and the screw to achieve self-locking. The internal hexagonal locating pin and the T-shaped locking screw hole position the nut body and the screw, making it suitable for high-frequency vibration scenarios. The friction groove increases the friction between the connecting seat and the contact platform, preventing loosening of the connecting seat and the nut body.
[0008] In the aforementioned positionable locking nut, the bottom of the nylon sleeve is placed on top of the nut base, and the inner diameter of the nylon sleeve is adapted to the inner diameter of the nut base. Self-locking is achieved through the friction between the nylon sleeve and the screw.
[0009] In the aforementioned positionable locking nut, the threads on the inner wall of the nut base conform to GB / T196 and GB / T197 standards. The bottom of the locking ring connects to the top of the nut base, and the inner thread of the hexagonal socket locating pin penetrates the T-shaped locking screw hole. Utilizing the cooperation of the hexagonal socket locating pin and the T-shaped locking screw hole, the nut base and the screw can be positioned, making it suitable for high-frequency vibration scenarios.
[0010] In the aforementioned positionable and lockable nut, a hidden groove is provided at the center of the bottom of the connecting seat, and several friction grooves are provided on the outer side of the inner wall of the hidden groove. The friction grooves penetrate the connecting seat on the side away from the hidden groove. The friction grooves increase the friction between the connecting seat and the contact platform, preventing the connecting seat and the nut base from loosening.
[0011] In the aforementioned positionable locking nut, the surfaces of the connecting seat, the nut base, and the locking ring are all galvanized. Galvanizing effectively isolates moisture and oxygen, preventing oxidation and rusting of the connecting seat, nut base, and locking ring. Furthermore, when the plating is damaged, zinc acts as a sacrificial anode and is preferentially corroded, thus protecting the base metal.
[0012] Compared with existing technologies, this lockable nut, through the combined use of locking components, internal hexagonal locating pins, T-shaped locking screw holes, hidden grooves, and friction grooves, has the advantage of locking. The nylon sleeve utilizes the friction between it and the screw to achieve self-locking. The combination of the internal hexagonal locating pin and the T-shaped locking screw hole positions the nut base and the screw, making it suitable for high-frequency vibration scenarios. The friction grooves increase the friction between the connecting seat and the contact platform, preventing loosening of the connecting seat and the nut base. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the structure of this utility model.
[0014] Figure 2 This is an exploded view of the locking component structure of this utility model.
[0015] Figure 3 This is a utility model Figure 2 A bottom view.
[0016] Figure 4 This is a schematic diagram of the connection seat and nut base structure of this utility model.
[0017] Figure 5This is a utility model Figure 4 A bottom view.
[0018] In the diagram: 1. Connecting seat; 2. Nut base; 3. Locking component; 31. Locking ring; 32. Nylon sleeve; 33. Embedded groove; 4. Socket hexagonal locating pin; 5. T-shaped locking screw hole; 6. Hidden groove; 7. Friction groove. Detailed Implementation
[0019] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.
[0020] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the lockable nut includes a connecting seat 1, a nut base 2 connected to the top of the connecting seat 1, and a locking element 3 connected to the top of the nut base 2. The locking element 3 includes a locking ring 31, an embedded groove 33 formed at the bottom of the inner wall of the locking ring 31, a nylon sleeve 32 embedded inside the embedded groove 33, and several T-shaped locking screw holes 5 extending through the outer surface of the nut base 2. Hexagonal socket head cap pins 4 are provided on the inner walls of the T-shaped locking screw holes 5. The bottom of the nylon sleeve 32 is placed on top of the nut base 2, and the inner diameter of the nylon sleeve 32 is matched with the inner diameter of the nut base 2. The threads on the inner wall of the nut base 2 conform to GB / T196 and GB / T197 standards. The bottom of the locking ring 31 is connected to the top of the nut base 2, and the inner thread of the hexagonal socket locating pin 4 passes through the T-shaped locking screw hole 5.
[0021] A hidden groove 6 is formed at the center of the bottom of the connecting seat 1. Several friction grooves 7 are formed on the outer side of the inner wall of the hidden groove 6, with the side of the friction grooves 7 away from the hidden groove 6 penetrating the connecting seat 1. The surfaces of the connecting seat 1, the nut base 2, and the locking ring 31 are all galvanized. In use, the nylon sleeve 32 achieves self-locking through the friction between it and the screw; the cooperation of the internal hexagonal locating pin 4 and the T-shaped locking screw hole 5 can position the nut base 2 and the screw, which is suitable for high-frequency vibration scenarios; the friction groove 7 increases the friction between the connecting seat 1 and the contact platform, preventing the connecting seat 1 and the nut base 2 from loosening.
[0022] Contents not described in detail herein are existing technologies known to those skilled in the art. The specific embodiments described herein are merely illustrative examples illustrating the spirit of this invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this invention or exceeding the scope defined by the appended claims.
Claims
1. A lockable nut, comprising a connecting seat (1), characterized in that: The top of the connecting seat (1) is connected to a nut base (2), and the top of the nut base (2) is connected to a locking member (3). The locking member (3) includes a locking ring (31). The bottom of the inner wall of the locking ring (31) is provided with an embedding groove (33). A nylon sleeve (32) is embedded inside the embedding groove (33). Several T-shaped locking screw holes (5) are provided through the outside of the nut base (2). The inner wall of the T-shaped locking screw holes (5) is provided with an internal hexagonal positioning pin (4).
2. The lockable nut according to claim 1, characterized in that: The bottom of the nylon sleeve (32) is placed on top of the nut base (2), and the inner diameter of the nylon sleeve (32) is adapted to the inner diameter of the nut base (2).
3. The lockable nut according to claim 1, characterized in that: The threads on the inner wall of the nut base (2) conform to GB / T196 and GB / T197 standards. The bottom of the locking ring (31) is connected to the top of the nut base (2). The inner thread of the internal hexagonal locating pin (4) passes through the T-type locking screw hole (5).
4. A lockable nut according to claim 1, characterized in that: The connecting seat (1) has a hidden groove (6) at the center of its bottom. The inner wall of the hidden groove (6) has several friction grooves (7) on its outer side. The friction grooves (7) pass through the connecting seat (1) on the side away from the hidden groove (6).
5. A lockable nut according to claim 1, characterized in that: The surfaces of the connecting seat (1), nut base (2) and locking ring (31) are all galvanized.
Citation Information
Patent Citations
Geothermal energy vertical pipeline lowering device
CN222209228U
Nut
CN222209338U
