Step type lock nut

Abstract

The utility model discloses a step type lock nut which comprises a step nut body used for being connected with a screw in a screwed mode, one end of the inner side of the step nut body is provided with threads conforming to relevant standards, a plurality of steps are arranged next to the step nut body, a blocking protrusion is arranged on the rear portion of each step, and grooves are formed in the rear portions of the blocking protrusions and the rear portions of the steps. A matched sealing ring is arranged in the groove, and a horn spring is installed between the sealing ring and the multiple steps. The spiral direction of the horn spring is the same as the thread direction of the step nut. All the components are easy to assemble, the relative positions are fixed, and the purposes of fastening and disassembly prevention are achieved more easily in later application; meanwhile, the step type lock nut is easy to produce in a standardized mode, and the batch production efficiency is far higher than that of mechanical turning.

Description

Technical Field

[0001] This utility model pertains to fastening components, and particularly relates to a stepped anti-loosening nut. Background Technology

[0002] A nut and a screw are screwed together to form a fastening assembly for two parts with through holes. When a nut and a screw (also called a bolt, which consists of a head and a threaded cylinder) are tightened, the connection can loosen under external force, posing a safety hazard to mechanical equipment. To prevent loosening, spring washers are sometimes added. Spring washers can, to some extent, prevent the nut from loosening and falling off.

[0003] In the production process of Chinese patent documents for tamper-proof nuts (patent number: 200720081211.8) and spring-type tamper-proof nuts (patent number: 201920142898.4), the grooves are machined. The large end of the spring is larger than the inner diameter of the groove in the nut. It is extremely difficult to set the groove inside the nut and to assemble the spring with the nut, which makes it difficult to meet the needs of mass production. At the same time, the position of the spring inside the nut is quite random, which is not conducive to later use. Some springs are even misaligned and cannot be accurately screwed into the screw, thus failing to achieve the purpose of application. Utility Model Content

[0004] To facilitate mass production of anti-loosening nuts, a new internal structure for the nuts has been designed. This utility model provides a stepped anti-loosening nut.

[0005] This utility model discloses a stepped anti-loosening nut, comprising a stepped nut for screwing onto a screw rod, wherein one end of the inner side of the stepped nut is provided with a thread conforming to relevant standards, followed by multiple steps, and a sealing protrusion is provided at the rear of the multiple steps. The sealing protrusion and the rear of the multiple steps form a groove, and a matching sealing ring is provided in the groove. A horn spring is installed between the sealing ring and the multiple steps; the helical direction of the horn spring is the same as the thread direction of the stepped nut.

[0006] Furthermore, the multi-step nut has three steps: the first step is used to install the horn spring, the second step is the step that applies thrust to the horn spring, and the third step is used to install the sealing ring.

[0007] Furthermore, the rear of the large end of the horn spring is engaged in the annular groove between the sealing ring and the multi-step, and the small end of the horn spring has at least one and a half turns of equal diameter, and the equal diameter portion can form a helical connection with the screw.

[0008] Furthermore, the inner diameter of the sealing ring is the same as the inner diameter of the second step of the stepped nut to prevent the horn spring from detaching from the stepped nut.

[0009] Furthermore, the height of the sealing protrusion is consistent with the three steps of the stepped nut to prevent the sealing ring from falling off.

[0010] The beneficial technical effects of this utility model are as follows:

[0011] This invention features a stepped nut and a sealing ring forming a groove for a flared spring. Both the stepped nut and the sealing ring can be mass-produced using molds. Assembly of the components is simple, their relative positions are fixed, and subsequent applications facilitate fastening and tamper prevention. This stepped anti-loosening nut is easy to standardize and mass-produce, with a production efficiency far exceeding that of machine turning. Attached Figure Description

[0012] Figure 1 This is a front view of the stepped anti-loosening nut of this utility model.

[0013] Figure 2 This is a schematic diagram of the stepped anti-loosening nut structure of this utility model.

[0014] Figure 3 This is a schematic diagram of the stepped anti-loosening nut of this utility model.

[0015] Figure 4 This is a schematic diagram of the horn spring of this utility model.

[0016] Figure 5 This is a side view of the horn spring of this utility model.

[0017] Figure 6 This is a schematic diagram of the sealing ring of this utility model.

[0018] Figure 7 This is a schematic diagram of the stepped anti-loosening nut of this utility model before processing.

[0019] Figure 8 This is a sectional view of the stepped anti-loosening nut of this utility model before processing.

[0020] Figure 9 The processing flow of the stepped anti-loosening nut of this utility model is as follows.

[0021] In the diagram: 1-Stepped nut; 1a-Thread; 1b-Multi-step; 1c-Groove; 1d-Sealing protrusion; 2-French spring; 2a-Small end of spring; 2b-Large end of spring; 3-Sealing ring. Detailed Implementation

[0022] The present invention will now be described in further detail with reference to the accompanying drawings and specific implementation methods.

[0023] This utility model provides a stepped anti-loosening nut, such as... Figure 1 As shown, it includes a stepped nut 1 used for screwing onto the screw, such as Figure 3 As shown, the inner end of the stepped nut 1 is provided with a thread 1a conforming to relevant standards, followed by a multi-step 1b. A sealing protrusion 1d is provided at the rear of the multi-step 1b, and the sealing protrusion 1d and the rear of the multi-step 1b form a groove 1c. For example... Figure 2 As shown, a matching sealing ring 3 is provided in the groove 1c, and a horn spring 2 is installed between the sealing ring 3 and the multi-stage step 1b; the helical direction of the horn spring 2 is the same as the thread direction of the step nut 1.

[0024] Furthermore, such as Figure 3 As shown, the multi-stage step 1b of the stepped nut 1 has three stages. The first stage is used to install the horn spring 2, the second stage is the stage that applies a pushing force to the horn spring 2, and the third stage is used to install the sealing ring 3.

[0025] Furthermore, the rear part of the large end 2b of the horn spring 2 is engaged in the annular groove between the sealing ring 3 and the multi-stage step 1b. For example... Figure 4 , Figure 5 As shown, the small end 2a of the horn spring 2 has at least one and a half turns of equal diameter, and this equal diameter portion can form a helical connection with the screw. The large end 2b of the horn spring 2, driven by the stepped nut 1, pushes the horn spring 2 to move in the positive direction on the screw, while the small end 2a of the horn spring 2 prevents the nut from rotating in the opposite direction.

[0026] Furthermore, sealing ring 3 (sealing ring 3 as...) Figure 6 The inner diameter of the step nut 1 is consistent with the inner diameter of the second step of the step nut 1, so as to prevent the horn spring 2 from disengaging from the step nut 1.

[0027] Furthermore, such as Figure 3 As shown, the height of the sealing protrusion 1d is consistent with the three steps of the stepped nut 1 to prevent the sealing ring 3 from falling off.

[0028] The processing procedure of this utility model is as follows: Figure 9 As shown, specifically:

[0029] After mass production of the stepped nut 1, the horn spring 2, and the sealing ring 3, place the horn spring 2 inside the stepped nut 1, then place the sealing ring 3 inside the stepped nut 1, and finally attach the end of the stepped nut 1 (e.g., Figure 7 , Figure 8 (As shown) the opening is closed, making the three parts into one.

[0030] In the production process of anti-tamper nuts (patent number: 200720081211.8) and spring-type anti-tamper nuts (patent number: 201920142898.4), the grooves are machined by turning. The large end of the spring is larger than the inner diameter of the groove of the nut, making assembly extremely difficult. The present invention combines a stepped nut and a sealing ring to form a groove. First, a horn spring is placed in, then the sealing ring is placed in, and finally the nut is sealed to form a new anti-loosening nut.

[0031] The installation, connection, or setting methods disclosed in this embodiment are all common mechanical connection methods. Any method that can achieve its beneficial effect can be implemented. In addition, the electrical components in this embodiment are all electrically connected to the main controller and the power supply. The main controller can be a conventional known device such as a computer that plays a control role. Those skilled in the art can control the electrical components through simple programming. Moreover, the existing disclosed power connection technology is also common knowledge in the field. Therefore, the specific structural composition and working principle will not be described in detail in this embodiment.

[0032] It should be noted that in this invention, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A stepped anti-loosening nut, characterized in that, Includes a stepped nut (1) for screwing with a screw, one end of which is threaded (1a), followed by a multi-step (1b), and a sealing protrusion (1d) is provided at the rear of the multi-step (1b). The sealing protrusion (1d) and the rear of the multi-step (1b) form a groove (1c), and a matching sealing ring (3) is provided in the groove (1c). A horn spring (2) is installed between the sealing ring (3) and the multi-step (1b); the helical direction of the horn spring (2) is the same as the thread direction of the stepped nut (1).

2. The stepped anti-loosening nut according to claim 1, characterized in that, The multi-step (1b) of the stepped nut (1) is three-level. The first-level step is used to install the horn spring (2), the second-level step is the step that applies a thrust to the horn spring (2), and the third-level step is used to install the sealing ring (3).

3. The stepped anti-loosening nut according to claim 1, characterized in that, The rear part of the large end (2b) of the horn spring (2) is engaged in the annular groove between the sealing ring (3) and the multi-stage step (1b). The small end (2a) of the horn spring (2) has at least one and a half turns of equal diameter, and the equal diameter portion can form a helical connection with the screw.

4. A stepped anti-loosening nut according to claim 2, characterized in that, The inner diameter of the sealing ring (3) is the same as the inner diameter of the second step of the stepped nut (1) to prevent the horn spring (2) from coming off the stepped nut (1).

5. A stepped anti-loosening nut according to claim 2, characterized in that, The height of the sealing protrusion (1d) is consistent with the three steps of the stepped nut (1) to prevent the sealing ring (3) from falling off.

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