Anti-falling flat washer
By introducing anti-loosening components and clamping structures into the flat washers, the problem of bolt loosening under vibration or impact is solved, thereby improving the stability and reliability of bolted connections.
Patent Information
- Application Number
- CN202423081098.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-12
- Publication Date
- 2025-10-24
- Estimated Expiration
- 2034-12-12
AI Technical Summary
Existing flat washers cannot provide sufficient resistance to prevent bolts from loosening when subjected to vibration or impact, resulting in increased gaps between connected parts and affecting the stability and reliability of the connection.
The design employs an anti-loosening flat washer, including an annular anti-loosening component and an arc-shaped clamping block between the first and second flat washer bodies. Combined with a return spring and a limiting post, the clamping component and anti-slip structure enhance the fixation of the bolts and prevent loosening.
It effectively prevents bolts from loosening under vibration or impact, improves the stability and reliability of bolted connections, ensures the tightening force of connected components, and extends service life.
Smart Images
Figure CN223469551U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the technical field of fastener, especially relates to the anti -drop flat washer. BACKGROUND
[0002] Flat washer is a kind of various shapes of thin parts for reducing friction, preventing leakage, isolation, preventing loosening or dispersing pressure, also known as flat washer. It is mainly punched out of iron plate, shape is generally a flat washer, there is a hole in the middle, the size of the hole is generally determined according to customer requirements. Flat washer is widely used in many materials and structures, for performing various similar functions. Limited by the material and process of threaded fastener, the supporting surface of fastener such as bolt is not large, therefore, in order to reduce the pressure stress of bearing surface and protect the surface of connected parts, washer is often used.
[0003] Publication No. "CN218971623U" a kind of anti -drop flat washer, it is related to the field of fastener, improve the present flat washer applicability is poor. Including inner circle, the inner wall of the inner circle is arranged with a plurality of grooves around the ring, the application is provided with the spacer and the triangular moving block, so that in the process that the bolt is screwed into the inside of the inner circle to the screw hole, the nut of the bolt can push the spacer on one side to move to one side of the inner circle, while the spacer drives corresponding each group of push rod to move to one side of the triangular moving block, so as to push each group of triangular moving block and each group of slide rod to move to one side of the bolt inside the inner circle, then drive each group of moving block to move to one side of the bolt inside the inner circle simultaneously, while each group of spring is stretched and deformed, until each group of moving block and the outer wall of the bolt inside the inner circle are in contact, so that the whole washer keeps coaxial with the bolt, thereby reducing the probability that the washer deviates in the process of screwing into the bolt due to the large inner diameter of the washer, and improving the applicability of the whole washer.
[0004] Although the above-mentioned utility model reduces the probability that the washer deviates in the process of screwing into the bolt due to the large inner diameter of the washer, and improves the applicability of the whole washer, but when subjected to vibration or impact, the flat washer cannot provide sufficient resistance to prevent the loosening of the bolt. Under the condition of vibration or dynamic load, the bolt may gradually loosen, and the loosening may cause the gap between the connected parts to increase, thereby affecting the stability and reliability of the connection. UTILITY MODEL CONTENTS
[0005] In view of the problems mentioned in the background art, the purpose of the utility model is to provide an anti -drop flat washer to solve the problem that the flat washer cannot provide sufficient resistance to prevent the loosening of the bolt when subjected to vibration or impact. Under the condition of vibration or dynamic load, the bolt may gradually loosen, and the loosening may cause the gap between the connected parts to increase, thereby affecting the stability and reliability of the connection.
[0006] The above technical objectives of the present invention are achieved through the following technical solutions:
[0007] The anti-slip flat washer comprises a first flat washer body and a second flat washer body, wherein anti-loosening components are symmetrically arranged between the first flat washer body and the second flat washer body via an annular circumferential array, wherein an end of the first flat washer body away from the second flat washer body is symmetrically slidably connected to an arc-shaped clamping block via a circular circumferential array, and the first flat washer body is symmetrically mounted with the clamping components via the circular circumferential array;
[0008] The clamping assembly includes a cavity, a first return spring, a moving block and a connecting block. A cavity is symmetrically opened inside the first flat washer body through a circular circumferential array. One end of the cavity is fixedly connected to the first return spring, and the other end of the first return spring is fixedly connected to the moving block. The moving block is slidingly connected to the inside of the cavity, and one end of the moving block is fixedly connected to the connecting block. The end of the connecting block away from the moving block extends out of the upper end of the first flat washer body and is fixedly connected to the bottom end of the arc-shaped clamping block. The end of the first flat washer body away from the second flat washer body is symmetrically opened with a moving groove through a circular circumferential array. The moving groove is connected to the inside of the cavity, and the moving groove is slidingly connected to the connecting block, which can more effectively fix the bolt head and prevent the bolt from loosening due to vibration, impact or external force during the connection process, thereby increasing the gap between the connecting components and improving the stability and reliability of the bolt fixation.
[0009] As an optimal technical solution, the arc-shaped end of the arc-shaped clamping block is fixedly connected with an anti-slip pad, and the surface of the anti-slip pad is provided with anti-slip bumps, which can further increase the clamping force and make the bolt head more firmly fixed on the flat washer.
[0010] As an optimal technical solution, the anti-loosening component includes a mounting seat, a first limiting column, a built-in hole, a second return spring and a second limiting column. A mounting groove is symmetrically opened at one end of the second flat washer body through a circular circumferential array, and the interior of the mounting groove and the bottom end of the first flat washer body are fixedly connected to the mounting seat, one end of the mounting seat inside the mounting groove is fixedly connected to the first limiting column, the other end of the first limiting column is opened at a built-in hole, the bottom end of the built-in hole is fixedly connected to the second return spring, the other end of the second return spring is fixedly connected to the second limiting column, the second limiting column and the interior of the built-in hole are slidingly connected, the other end of the second limiting column is fixedly connected to the mounting seat at the bottom end of the first flat washer body, the third return spring is sleeved on the outside of the first limiting column and the second limiting column, and the head and tail ends of the third return spring are respectively fixedly connected to the opposite ends of the mounting seat, which can significantly enhance the friction between the nut and the bolt, thereby effectively preventing the loosening of the bolt connection caused by equipment vibration or external force impact, and can relax stress, maintain the tightening force of the bolt connection, and extend the service life of the connection.
[0011] As a preferred technical solution, the first flat washer body bottom end is fixedly connected with positioning columns in a circular circumferential array, and the second flat washer upper end is symmetrically provided with positioning holes in a circular circumferential array, and the positioning column and the positioning hole are inserted, which ensures the accuracy and stability when the first flat washer body and the second flat washer body are combined.
[0012] As a preferred technical solution, the second flat washer body bottom end is fixedly connected with anti-skid protruding strips in a circular circumferential array, and the second flat washer body bottom end is fixedly connected with anti-skid protruding points in a circular circumferential array, which can enhance the fastening effect of bolt connection, and can be more closely attached to the surface of the bolt head or the connecting component, providing greater clamping force, thereby ensuring that the connecting component remains stable during operation.
[0013] In summary, the utility model mainly has the following beneficial effects:
[0014] In the utility model, the anti-skid protruding strips and the anti-skid protruding points at one end of the second flat washer body are combined with the threaded holes on the mounting surface, and then the bolt is screwed through the through hole at one end of the first flat washer body and the second flat washer body and the threaded hole, the bolt is rotated, the bolt is screwed with the threaded hole, the bolt advances, the bolt head at one end of the bolt presses the arc-shaped end of the arc-shaped clamping block when advancing, the arc-shaped clamping block drives the connecting block to slide inside the moving groove, the connecting block drives the moving block to slide inside the cavity, the moving block is pressed against the first return spring, the first return spring is compressed, the arc-shaped clamping block clamps and fixes the bolt head, which can more effectively fix the bolt head, prevent the bolt from loosening due to vibration, impact or external force during connection, and increase the gap between the connecting components, improve the stability and reliability of the bolt fixation. BRIEF DESCRIPTION OF DRAWINGS
[0015] Figure 1 is a schematic diagram of the three-dimensional structure of the utility model;
[0016] Figure 2 is another schematic diagram of the three-dimensional structure of the utility model;
[0017] Figure 3 is a schematic diagram of the sectional three-dimensional structure of the utility model;
[0018] Figure 4 is a schematic diagram of the positioning column three-dimensional structure of the utility model.
[0019] : 1, first flat washer body; 2, second flat washer body; 3, positioning column; 4, positioning hole; 5, arc clamping block; 6, non-slip pad; 7, non-slip protruding strip; 8, non-slip protruding point; 9, moving groove; 10, clamping assembly; 101, cavity; 102, first return spring; 103, moving block; 104, connecting block; 11, mounting groove; 12, anti-loose assembly; 121, mounting seat; 122, first limiting column; 123, built-in hole; 124, second return spring; 125, second limiting column; 13, third return spring. DETAILED DESCRIPTION
[0020] EMBODIMENT
[0021] REFERENCE Figures 1 to 4 The anti-loose flat washer described in the embodiment comprises a first flat washer body 1 and a second flat washer body 2, and an anti-loose assembly 12 is symmetrically arranged between the first flat washer body 1 and the second flat washer body 2 in a circular circumferential array, an arc clamping block 5 is symmetrically connected to the end of the first flat washer body 1 away from the second flat washer body 2 in a circular circumferential array, and a clamping assembly 10 is symmetrically mounted on the first flat washer body 1 in a circular circumferential array.
[0022] The clamping assembly 10 comprises a cavity 101, a first return spring 102, a moving block 103, and a connecting block 104, the first flat washer body 1 is internally provided with the cavity 101 in a circular circumferential array, the cavity 101 is internally fixedly connected at one end with the first return spring 102, the other end of the first return spring 102 is fixedly connected with the moving block 103, the moving block 103 is in sliding connection with the inside of the cavity 101, the moving block 103 is fixedly connected at one end with the connecting block 104, the end of the connecting block 104 away from the moving block 103 extends out of the upper end of the first flat washer body 1 and is fixedly connected with the bottom end of the arc clamping block 5, the end of the first flat washer body 1 away from the second flat washer body 2 is provided with a moving groove 9 in a circular circumferential array, the moving groove 9 is in communication with the inside of the cavity 101, and the moving groove 9 is in sliding connection with the connecting block 104, the non-slip protruding strip 7 and the non-slip protruding point 8 at one end of the second flat washer body 2 are combined with the threaded hole on the mounting surface, then a bolt is screwed with the threaded hole through the through hole at one end of the first flat washer body 1 and the second flat washer body 2, the bolt is rotated, the bolt is in threaded connection with the threaded hole, the bolt advances, and the bolt head at one end of the bolt exerts pressure on the arc-shaped end of the arc clamping block 5 when advancing, so that the arc clamping block 5 drives the connecting block 104 to slide in the moving groove 9, the connecting block 104 drives the moving block 103 to slide in the cavity 101, the moving block 103 is pressed against the first return spring 102, the first return spring 102 is compressed, and the arc clamping block 5 clamps and fixes the bolt head.
[0023] REFERENCE Figure 1The arc-shaped clamping block 5 is fixedly connected with an anti-skid pad 6 at the arc-shaped end, and the anti-skid pad 6 is provided with anti-skid convex points on the surface. The anti-skid pad 6 can further increase the clamping force, so that the bolt head is more firmly fixed on the flat washer.
[0024] Reference Figure 3 The anti-loose assembly 12 comprises a mounting seat 121, a first limiting column 122, a built-in hole 123, a second reset spring 124 and a second limiting column 125. One end of the second flat washer body 2 is provided with a mounting groove 11 in a circular circumferential array and is symmetrically arranged. The mounting groove 11 and the bottom end of the first flat washer body 1 are fixedly connected with the mounting seat 121. One end of the mounting seat 121 in the mounting groove 11 is fixedly connected with the first limiting column 122. The other end of the first limiting column 122 is provided with the built-in hole 123. The bottom end of the built-in hole 123 is fixedly connected with the second reset spring 124. The other end of the second reset spring 124 is fixedly connected with the second limiting column 125. The second limiting column 125 is in sliding connection with the inside of the built-in hole 123. The other end of the second limiting column 125 is fixedly connected with the mounting seat 121 at the bottom end of the first flat washer body 1. The first limiting column 122 and the second limiting column 125 are provided with the third reset spring 13. The first end and the second end of the third reset spring 13 are fixedly connected with the opposite ends of the mounting seat 121. The anti-skid convex strip 7 and the anti-skid convex point 8 at one end of the second flat washer body 2 are combined with the threaded hole on the mounting surface. Then the bolt is screwed with the threaded hole through the through hole at one end of the first flat washer body 1 and the second flat washer body 2. The bolt is screwed. The bolt is in threaded connection with the threaded hole. The bolt advances. The bolt head at one end of the bolt pushes the first flat washer body 1 to move towards the second flat washer body 2. The first flat washer body 1 drives the second limiting column 125 to slide in the built-in hole 123. The second limiting column 125 is pressed towards the second reset spring 124. The second reset spring 124 is compressed. At the same time, when the first flat washer body 1 approaches the second flat washer body 2, the third reset spring 13 is compressed. The friction between the nut and the bolt is enhanced.
[0025] Reference Figure 4 The bottom end of the first flat washer body 1 is fixedly connected with the positioning column 3 in a circular circumferential array and symmetrically. The upper end of the second flat washer is provided with the positioning hole 4 in a circular circumferential array and symmetrically. The positioning column 3 is in plug connection with the positioning hole 4. When the first flat washer body 1 approaches the second flat washer body 2, the positioning column 3 at one end of the first flat washer body 1 is inserted into the positioning hole 4 at one end of the second flat washer body 2.
[0026] Reference Figure 2, the bottom end of the second flat washer body 2 is fixedly connected with anti-skid protruding strips 7 in a circular array, and the bottom end of the second flat washer body 2 is fixedly connected with anti-skid protruding points 8 in a circular array, the anti-skid protruding strips 7 and the anti-skid protruding points 8 can increase friction, prevent the bolt head or other connecting parts from sliding or loosening under vibration or external force, and the protruding strips and the protruding points can provide additional contact area and engagement points, thereby effectively increasing friction and ensuring stability and reliability of connection.
[0027] Principle and advantages: first, the anti-skid protruding strips 7 and the anti-skid protruding points 8 at one end of the second flat washer body 2 are combined with the threaded holes on the mounting surface, then the bolt is screwed through the through hole at one end of the first flat washer body 1 and the second flat washer body 2 and the threaded hole, the bolt is rotated, the bolt is screwed with the threaded hole, the bolt is advanced, the bolt head at one end of the bolt pushes the first flat washer body 1 to move towards the second flat washer body 2, the first flat washer body 1 drives the second limiting column 125 to slide in the built-in hole 123, the second limiting column 125 is pressed towards the second return spring 124, the second return spring 124 is compressed, at the same time, the third return spring 13 is compressed when the first flat washer body 1 approaches the second flat washer body 2, at the same time, the bolt head at one end of the bolt presses the arc-shaped end of the arc-shaped clamping block 5 when advancing, so that the arc-shaped clamping block 5 drives the connecting block 104 to slide in the moving groove 9, the connecting block 104 drives the moving block 103 to slide in the cavity 101, the moving block 103 is pressed towards the first return spring 102, the first return spring 102 is compressed, and the arc-shaped clamping block 5 clamps and fixes the bolt head.
[0028] The utility model discloses can more effectively fixed bolt head, prevent the bolt from loosening and leading to the clearance between connecting parts to increase in the connecting process because of vibration, impact or external force, improved the stability and reliability of bolt fixed.
Claims
1. Anti - pull flat washer, comprising a first flat washer body (1) and a second flat washer body (2), characterized in that: The first flat washer body (1) and the second flat washer body (2) are provided with a locking assembly (12) through annular circumferential array symmetry, one end of the first flat washer body (1) away from the second flat washer body (2) is connected with an arc-shaped clamping block (5) through circular circumferential array symmetry sliding connection, and the first flat washer body (1) is provided with a clamping assembly (10) through circular circumferential array symmetry. The clamping assembly (10) comprises a cavity (101), a first reset spring (102), a moving block (103) and a connecting block (104), the first flat washer body (1) is provided with a cavity (101) through circular circumferential array symmetry inside, one end of the cavity (101) is fixedly connected with the first reset spring (102), the other end of the first reset spring (102) is fixedly connected with the moving block (103), the moving block (103) is in sliding connection with the cavity (101) inside, one end of the moving block (103) is fixedly connected with the connecting block (104), and the other end of the connecting block (104) away from the moving block (103) extends out of the upper end of the first flat washer body (1) and is fixedly connected with the bottom end of the arc-shaped clamping block (5).
2. The anti -pulling flat washer according to claim 1, characterized in that: One end of the first flat washer body (1) away from the second flat washer body (2) is provided with a moving groove (9) through circular circumferential array symmetry, the moving groove (9) and the cavity (101) inside are in communication with each other, and the moving groove (9) and the connecting block (104) are in sliding connection.
3. The anti -pulling flat washer of claim 1, wherein: The arc-shaped clamping block (5) is fixedly connected with an anti-skid pad (6) at the arc-shaped end, and the surface of the anti-skid pad (6) is provided with anti-skid convex points.
4. The anti -pulling flat washer of claim 1, wherein: The locking assembly (12) comprises a mounting seat (121), a first limiting column (122), a built-in hole (123), a second reset spring (124) and a second limiting column (125), one end of the second flat washer body (2) is provided with a mounting groove (11) through circular circumferential array symmetry, the mounting groove (11) inside and the bottom end of the first flat washer body (1) are fixedly connected with the mounting seat (121), one end of the mounting seat (121) inside the mounting groove (11) is fixedly connected with the first limiting column (122), the other end of the first limiting column (122) is provided with the built-in hole (123), the bottom end of the built-in hole (123) inside is fixedly connected with the second reset spring (124), the other end of the second reset spring (124) is fixedly connected with the second limiting column (125), the second limiting column (125) and the built-in hole (123) inside are in sliding connection, and the other end of the second limiting column (125) is fixedly connected with the mounting seat (121) of the bottom end of the first flat washer body (1).
5. The anti -pulling flat washer of claim 4, wherein: The first limiting column (122) and the second limiting column (125) are provided with a third reset spring (13) outside, and the first end and the second end of the third reset spring (13) are fixedly connected with the opposite ends of the mounting seat (121).
6. The anti -migration flat washer of claim 1, wherein: The first flat washer body (1) is fixedly connected with positioning columns (3) at the bottom end through a circular circumferential array, and the second flat washer is provided with positioning holes (4) at the upper end through a circular circumferential array, the positioning columns (3) and the positioning holes (4) are inserted.
7. The anti -migration flat washer of claim 1, wherein: The second flat washer body (2) is fixedly connected with anti-skid convex strips (7) at the bottom end through a circular circumferential array, and the second flat washer body (2) is fixedly connected with anti-skid convex points (8) at the bottom end through a circular circumferential array.