Retaining flange nut

Abstract

The utility model discloses a retaining flange nut. The retaining flange nut comprises a nut part, a flange part and a retaining elastic piece. An inner threaded hole is formed in the center of the nut part; a tooth-shaped flange is arranged on the bottom end face of the flange part and resists reverse rotation of the flange nut in the radial direction through surface friction force of an acting part. The retaining elastic piece comprises a connecting section and a retaining section, the connecting section is fixed to the top end face of the nut part, and the retaining section is far away from the top end face of the nut part and obliquely extends towards the inner threaded hole, so that the inner side face of the retaining elastic piece can abut against threads of a screw arranged in the inner threaded hole in a penetrating mode, and the retaining effect similar to a ratchet wheel is achieved. The tail end of the retaining section is clamped between threads of the screw and can resist reverse retreating of the flange nut in the axial direction, the retaining elastic piece and the tooth-shaped flange are matched in different directions so that the flange nut can be effectively prevented from retreating and disengaging from the screw, stability of the connecting position is avoided, stable operation of equipment applying the flange nut is guaranteed, and safety is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of nuts, in particular to a flange nut with anti-loosening function. Background Art

[0002] A flange nut is a type of nut with a flange at one end, which can be regarded as an integral washer on the nut, used to increase the contact area between the nut and the component, evenly distribute the pressure generated by the nut on the fixed component, thereby reducing the possibility of component damage. The nut part generally has similar dimensions and thread specifications to traditional hexagonal nuts and can be applied to the interconnections between various different components.

[0003] Traditional flange nuts are prone to loosening in environments with vibration or load changes. The flange nuts will rotate in the reverse direction and withdraw from the screws or bolts, resulting in connection failure and affecting the safety and stability of the applied equipment.

[0004] In view of the deficiencies of the prior art, corresponding improvements need to be made to the flange nuts. Summary of the Utility Model

[0005] In view of this, the purpose of the present utility model is to provide a flange nut with anti-loosening function to solve the above problems.

[0006] To achieve the above purpose, the present utility model adopts the following technical solutions:

[0007] The present utility model provides a flange nut with anti-loosening function, which includes a nut part, a flange part and an anti-loosening elastic sheet.

[0008] An internal thread hole is provided at the center of the nut part for passing through a screw; the flange part is arranged at the bottom of the nut part, and a toothed flange is provided on the bottom end face of the flange part; the anti-loosening elastic sheet includes a connecting section and an anti-loosening section. The connecting section of the anti-loosening elastic sheet is fixed on the top end face of the nut part, and the anti-loosening section of the anti-loosening elastic sheet extends obliquely away from the top end face of the nut part and towards the internal thread hole, so that the inner side of the anti-loosening elastic sheet can abut against the thread of the screw passing through the internal thread hole.

[0009] Preferably, in the radial direction of the internal thread hole, the end of the anti-loosening section is flush with the internal thread hole, and the end of the anti-loosening section is tangent to the circular edge of the internal thread hole.

[0010] Preferably, the anti-loosening elastic sheet is an arc-shaped elastic strip.

[0011] Preferably, a fastener connection hole is provided on the connecting section of the anti-loosening elastic sheet, and the connecting section of the anti-loosening elastic sheet is locked on the top end face of the nut part through a fastener.

[0012] Preferably, the connecting section of the anti-retreat elastic piece is fixed on the top end face of the nut part by welding.

[0013] Preferably, the anti-retreat elastic piece is a copper elastic piece.

[0014] Preferably, a galvanized layer is provided on the inner side surface of the anti-retreat elastic piece.

[0015] The technical effects achieved by the technical solution of the present utility model mainly include:

[0016] Based on the above structural arrangement of the anti-retreat elastic piece, the anti-retreat elastic piece can play a role similar to that of a ratchet for anti-retreat. When the screw is inserted into the internal thread hole of the nut part, the thread of the screw can slide down along the inner side surface, squeezing open the anti-retreat elastic piece. When the screw is installed, the anti-retreat elastic piece elastically resets, and the end of the anti-retreat section of the anti-retreat elastic piece is stuck between the threads of the screw. In the axial direction, it can resist the reverse withdrawal movement of the flange nut, and the surface friction of the toothed flange acting component resists the reverse rotation of the flange nut in the radial direction. The anti-retreat elastic piece and the toothed flange can cooperate in the vertical direction to play an anti-retreat role together, so as to effectively prevent the flange nut from withdrawing and detaching from the screw, avoid causing connection failure, and ensure the safety and stability of the applied equipment;

[0017] The connecting section of the anti-retreat elastic piece can be locked on the top end face of the nut part through a fastener, so that the anti-retreat elastic piece can be freely disassembled, which is convenient for operators to maintain or replace, and has a higher degree of freedom. Description of the Drawings

[0018] Figure 1 is a schematic structural diagram of the anti-retreatable flange nut and screw assembly provided by an embodiment of the present utility model;

[0019] Figure 2 is a schematic structural diagram after the flange nut is installed on the screw;

[0020] Figure 3 is a front view of the flange nut.

[0021] The reference numerals in the above drawings are as follows:

[0022] Nut part 1, internal thread hole 10, top end face 1a of the nut part, flange part 2, toothed flange 21, anti-retreat elastic piece 3, connecting section 31, anti-retreat section 32, fastener 33, screw 400. Detailed Embodiment

[0023] To make the objectives, technical solutions and advantages of the present utility model clearer, the following will describe in detail the specific embodiments of the present utility model with reference to the accompanying drawings. Examples of these preferred embodiments are illustrated in the drawings. The embodiments of the present utility model shown in the drawings and described according to the drawings are merely exemplary, and the present utility model is not limited to these embodiments.

[0024] Here, it should also be noted that in order to avoid obscuring the present utility model with unnecessary details, only the structures and / or processing steps closely related to the solution according to the present utility model are shown in the drawings, while other details of less relevance are omitted.

[0025] Combined Figures 1 to 3 As shown, an embodiment of the present utility model provides a flange nut that can prevent backward movement, which includes a nut portion 1, a flange portion 2, and a backward movement prevention elastic piece 3.

[0026] An internal thread hole 10 is provided at the center of the nut portion 1 for passing through a screw 400;

[0027] The flange portion 2 is disposed at the bottom of the nut portion 1, and a toothed flange 21 is provided on the bottom end surface of the flange portion 2;

[0028] The backward movement prevention elastic piece 3 includes a connection section 31 and a backward movement prevention section 32. The connection section 31 of the backward movement prevention elastic piece 3 is fixed on the top end surface 1a of the nut portion 1, and the backward movement prevention section 32 of the backward movement prevention elastic piece 3 extends obliquely away from the top end surface 1a of the nut portion 1 and towards the internal thread hole 10, so that the inner side surface of the backward movement prevention elastic piece 3 can abut against the thread of the screw 400 passing through the internal thread hole 10.

[0029] Based on the structural setting of the anti-return elastic piece 3, the inner side of the anti-return section 32 of the anti-return elastic piece 3 facing the internal thread hole 10 can play an anti-return role similar to that of a ratchet. When using the above-mentioned flange nut fixing component with anti-return function, insert the screw 400 into the internal thread hole 10 of the nut part 1. After the thread of the screw 400 contacts the inner side of the anti-return elastic piece 3, it slides down along the inner side, squeezing open the anti-return elastic piece 3, which does not affect the insertion of the screw 400. Of course, the operator can also first push aside the anti-return elastic piece 3 and bend it to make way for the insertion of the screw 400. After the screw 400 is installed, the screw 400 and the bottom end face of the flange part 2 can clamp the component between them for fixation. The anti-return elastic piece 3 is elastically reset. At this time, even if the flange nut tends to reverse in an environment of vibration or load change, the end of the anti-return section 32 of the anti-return elastic piece 3 is stuck between the threads of the screw 400, and it can resist the reverse withdrawal movement of the flange nut in the axial direction. Cooperating with the toothed flange 21 provided on the bottom end face of the flange part 2, the surface friction force of the toothed flange 21 on the component resists the reverse rotation of the flange nut in the radial direction, and they cooperate together in mutually perpendicular directions to play an anti-return role, so as to effectively prevent the flange nut from withdrawing and detaching from the screw 400, avoid causing connection failure, and ensure the safety and stability of the applied equipment.

[0030] To enable the screw 400 to pass smoothly through the anti-return elastic piece 3 when inserted into the internal thread hole 10, and to ensure that the inner side of the anti-return elastic piece 3 can abut against the thread of the screw 400 inserted in the internal thread hole 10, and the end of the anti-return section 32 of the anti-return elastic piece 3 can be reliably stuck between the threads of the screw 400 after elastic reset. Specifically, in the radial direction of the internal thread hole 10, the end of the anti-return section 32 is flush with the internal thread hole 10, and the end of the anti-return section 32 is tangent to the circular edge of the internal thread hole 10, that is, the anti-return elastic piece 3 can just contact the screw 400.

[0031] Exemplarily, the anti-return elastic piece 3 is an arc-shaped elastic strip. Since the anti-return elastic piece 3 is divided into two ends, namely the connection section 31 and the anti-return section 32, this strip structure facilitates the connection and fixation of one end of the anti-return elastic piece 3 and the other end to extend and abut against the screw 400. Of course, the specific shape and size of the anti-return elastic piece 3 can be selected according to actual application requirements and are not limited here.

[0032] The connection section 31 of the anti-return elastic piece 3 can be fixed to the top end face 1a of the nut part 1 in a detachable manner, which is convenient for the operator to choose whether to use the anti-return elastic piece 3 according to needs and is also convenient for maintenance and replacement of the anti-return elastic piece 3. In this embodiment, a fastener connection hole is provided on the connection section 31 of the anti-return elastic piece 3, and the connection section 31 of the anti-return elastic piece 3 is locked to the top end face 1a of the nut part 1 through a fastener 33.

[0033] As another implementation manner of the connecting section 31 of the anti-backlash elastic piece 3, the connecting section 31 of the anti-backlash elastic piece 3 is fixed on the top end face 1a of the nut portion 1 by welding.

[0034] Exemplarily, the anti-backlash elastic piece 3 is a copper elastic piece. The copper elastic piece has excellent resilience, high compressive strength, fatigue resistance, easy electroplating and welding, high stiffness, wear resistance, corrosion resistance and other advantages, which can better meet the requirements of the anti-backlash elastic piece 3.

[0035] A galvanized layer is covered on the inner side surface of the anti-backlash elastic piece 3. Forming a galvanized layer on the inner side surface and even other surfaces of the anti-backlash elastic piece 3 can not only play a role in anti-corrosion, making it not easy to rust in a humid, rainy and corrosive environment, but also reduce the wear with the screw 400.

[0036] It should be noted that in this article, relational 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 relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without more limitations, an element defined by the statement "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including the element.

[0037] The above are only specific implementation manners of the present application. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present application, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present application.

Claims

1. A flange nut capable of being stopped, characterized in that: include: A nut portion (1), wherein an internal threaded hole (10) is provided at the center of the nut portion (1) for passing a screw (400); A flange portion (2), the flange portion (2) being arranged at the bottom of the nut portion (1), and a toothed flange (21) being arranged on the bottom end surface of the flange portion (2); A stop spring (3), the stop spring (3) comprising a connecting section (31) and a stop section (32), the connecting section (31) of the stop spring (3) being fixed on the top end surface (1a) of the nut portion (1), the stop section (32) of the stop spring (3) being away from the top end surface (1a) of the nut portion (1) and extending obliquely toward the internal threaded hole (10), so as to enable the inner side surface of the stop spring (3) to abut against the thread of a screw (400) passing through the internal threaded hole (10).

2. The retainable flange nut according to claim 1, characterized in that: Along the radial direction of the internal threaded hole (10), the end of the stop section (32) is flush with the internal threaded hole (10), and the end of the stop section (32) is tangent to the circular edge of the internal threaded hole (10).

3. The retainable flange nut according to claim 1, characterized in that: The anti-retraction spring piece (3) is an elastic strip in the shape of an arc surface.

4. The retainable flange nut according to claim 1, characterized in that: A fastener connection hole is provided on the connection section (31) of the anti-retraction spring sheet (3), and the connection section (31) of the anti-retraction spring sheet (3) is locked on the top end surface (1a) of the nut portion (1) by means of a fastener (33).

5. The retainable flange nut according to claim 1, characterized in that: The connecting section (31) of the retaining spring (3) is fixed to the top end surface (1a) of the nut portion (1) by welding.

6. The retainable flange nut according to claim 1, characterized in that: The anti-retraction spring piece (3) is a copper spring piece.

7. The retainable flange nut according to claim 1, characterized in that: The inner side surface of the retaining spring (3) is covered with a zinc coating.

Images