Retaining bolt assembly

Abstract

The utility model discloses a retaining bolt assembly which comprises a bolt, a flange nut, a ratchet piece and a spring accessory. A notch is formed in the bolt and extends upwards from the bottom of the bolt in the axial direction, the notch comprises an inner groove and two side grooves which are communicated with each other, the inner groove is located in a center shaft of the bolt, the side grooves are located in the screw rod face of the bolt, and the top ends of the side grooves extend in the side direction to form clamping grooves which are parallel to the side grooves. An internal thread through hole is formed in the flange nut, and a tooth-shaped structure is arranged on the bottom surface of the flange nut; the ratchet sheet is connected in the notch in a sliding manner; the spring accessory comprises a clamping head, a spring and a tail rod, the clamping head is arranged in the side groove in a penetrating mode to be fixed, the spring is installed in the inner groove to connect the clamping head and the tail rod, the tail rod is clamped and fixed to the bottom of the ratchet piece, the ratchet piece is pressed to the bottom of the flange nut, the friction force of rotation of the flange nut is increased, and the ratchet piece is meshed with the tooth-shaped structure to prevent the flange nut from reversely rotating and retreating. The connection reliability of the bolt and the flange nut is ensured.

Description

Technical Field

[0001] This utility model relates to the field of bolt technology, and in particular to anti-reverse bolt assemblies. Background Technology

[0002] Bolts are a type of fastener consisting of a bolt head and a bolt shank. They are used in conjunction with nuts. Bolt and nut assemblies are used to fasten objects with through holes. Threaded connections are highly standardized, easy to disassemble and manufacture, and can adapt to many working conditions, making them widely used.

[0003] In practical applications, bolt and nut assemblies are prone to loosening under the influence of external environmental conditions after prolonged use. The bolt and nut may rotate in opposite directions, causing the nut to come off the bolt and resulting in bolt assembly failure. This, in turn, affects the safety and stability of the components and equipment used. Utility Model Content

[0004] In view of this, the purpose of this utility model is to provide a backstop bolt assembly to solve the above problems.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] This utility model provides a locking bolt assembly, which includes a bolt, a flange nut, a ratchet plate, and a spring accessory.

[0007] The bolt has a slot extending upwards along the bolt's axial direction from its bottom. The slot includes an inner slot and two side slots on either side of the inner slot, each connected to the inner slot. The inner slot is located on the bolt's central axis, creating a hollow structure. The side slots are located on the bolt's threaded surface, with their tops extending laterally to form a locking groove parallel to the side slot, which communicates with the inner slot. The flange nut has an internally threaded through-hole on the bolt, and its bottom surface has a toothed structure. The ratchet slides along the slot to the bolt, engaging with the toothed structure of the flange nut. The spring accessory includes a locking head, a spring, and a tail rod. The locking head is fixed within the locking groove, the spring is inserted into the inner slot, and the spring connects the locking head and the tail rod. The tail rod is secured to the bottom of the ratchet.

[0008] Preferably, the locking groove is formed by the side groove extending laterally from the top end and then downward. There are two locking grooves, which are symmetrically arranged and located on the same radial direction of the bolt.

[0009] Preferably, the ratchet has a clearance opening for the tail rod to pass through, a protrusion extends downward beside the clearance opening, and a stop is provided on the top of the tail rod for abutting against the protrusion to secure it to the bottom of the ratchet.

[0010] Preferably, the clamp and the stop are strip-shaped structures extending radially along the bolt, and the clamp and the stop are parallel to each other.

[0011] Preferably, the outermost end of the clamp head is flush with the screw surface.

[0012] Preferably, the inner groove is cylindrical, and the two side grooves are located on the same radial direction of the inner groove.

[0013] Preferably, when the spring is in its original length state, the bottom surface of the tail rod is exposed in the inner groove.

[0014] The technical effects achieved by this utility model include:

[0015] Based on the aforementioned anti-reverse bolt assembly, a ratchet plate and a spring accessory are installed by opening a slot in the bolt. The spring accessory presses the ratchet plate tightly against the bottom of the flange nut. The ratchet plate engages with the toothed structure at the bottom of the flange nut to prevent the flange nut from rotating backward. This also increases the friction force that the flange nut needs to overcome to rotate, ensuring the reliability of the anti-reverse bolt assembly connection and achieving long-term stable fixation of objects.

[0016] In addition, the aforementioned anti-reverse bolt assembly has the advantages of simple structure, easy installation, and low installation cost. Attached Figure Description

[0017] Figure 1 A perspective view of the anti-reverse bolt assembly provided in the embodiment of this utility model.

[0018] Figure 2 This is a structural exploded view of the anti-reverse bolt assembly;

[0019] Figure 3 This is a schematic diagram showing the flange nut being installed on the bolt in the anti-reverse bolt assembly.

[0020] Figure 4 This is a schematic diagram showing the ratchet plate and spring fitting abutting in the anti-reverse bolt assembly.

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

[0022] Bolt 1, screw face 1a, slot 10, inner groove 101, side groove 102, locking groove 103;

[0023] Flange nut 2, threaded through hole 20, toothed structure 21;

[0024] Ratchet 3, clearance opening 30, protrusion 31;

[0025] Spring accessories 4, clip 41, spring 42, tail rod 43, stop block 431. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Examples of these preferred embodiments are illustrated in the drawings. The embodiments of this utility model shown in and described with reference to the drawings are merely exemplary, and this utility model is not limited to these embodiments.

[0027] It should also be noted that, in order to avoid obscuring the present invention with unnecessary details, only the structures and / or processing steps closely related to the solution according to the present invention are shown in the accompanying drawings, while other details that are not closely related are omitted.

[0028] like Figure 1 and Figure 2 As shown, this utility model embodiment provides a locking bolt assembly, which includes a bolt 1, a flange nut 2, a ratchet 3, and a spring accessory 4.

[0029] The bolt includes a head and a shank. The bolt 1 has a slot 10 extending upward from the bottom of the bolt 1 along its axial direction. The slot 10 includes an inner slot 101 and two side slots 102 located on both sides of the inner slot 101. The two side slots 102 are connected to the inner slot 101. The inner slot 101 is located on the central axis of the bolt 1, making the bolt 1 form a cavity structure. The side slots 102 are located on the shank surface 1a of the bolt 1, which is the outer circumferential surface of the shank of the bolt 1. The top of the side slot 102 extends laterally to form a locking groove 103 parallel to the side slot 102. The locking groove 103 is connected to the inner slot 101, so it can be moved along the side slot 102 and enter the locking groove 103.

[0030] The flange nut 2 has an internal threaded through hole 20 that passes through the bolt 1, and the bottom surface of the flange nut 2 is provided with a toothed structure 21.

[0031] The ratchet 3 is slidably connected to the bolt 1 along the slot 10 and engages with the toothed structure 21 of the flange nut 2;

[0032] The spring accessory 4 includes a locking head 41, a spring 42, and a tail rod 43. The locking head 41 is fixed inside the locking groove 103. The spring 42 is installed in the inner groove 101. The spring 42 connects the locking head 41 and the tail rod 43. The tail rod 43 is locked to the bottom of the ratchet plate 3.

[0033] The aforementioned anti-reverse bolt assembly is used to fix the target object, combined with Figure 2 and 3As shown, first, move the clamp 41 of the spring accessory 4 upward along the side groove 102 to the top of the side groove 102. Then, move the clamp 41 along the connection between the side groove 102 and the locking groove 103 to the locking groove 103, and lock the clamp 41 into the locking groove 103 for fixation. Next, insert the bolt 1 into the target object to be fixed, and then insert the flange nut 2 into the bolt 1. Tighten the flange nut 2 until the flange nut 2 and the bolt head of the bolt 1 engage to clamp the target object. Figure 3 and Figure 4 As shown, the ratchet 3 is then passed through the tail rod 43 and mounted on the screw 1. The ratchet 3 slides upward along the slot 10 until it abuts against the toothed structure 21 of the flange nut 2. The spring 42 connects the collet 41 and the tail rod 43, and the tail rod 43 is secured to the bottom of the ratchet 3. Therefore, under the tension of the spring 42, the tail rod 43 is pulled tight by the spring 42, thereby pressing the ratchet 3 against the bottom of the toothed structure 21 of the flange nut 2. The flange nut 2 is not only subjected to upward pressing, which increases the friction, but the flange nut 2 is also difficult to reverse due to the meshing action of its toothed structure 21 and the ratchet 3, thus ensuring a reliable connection.

[0034] In this example, the toothed structure 21 of the flange nut 2 needs to engage with the ratchet plate 3. Therefore, the arrangement of the toothed structure 21 and the ratchet plate 3 is opposite. For example, if the toothed structure 21 is arranged clockwise, then the ratchet plate 3 is arranged counterclockwise.

[0035] Specifically, the locking groove 103 is formed by extending laterally from the top of the side groove 102 and then downward. There are two locking grooves 103, which are symmetrically arranged and located on the same radial direction of the bolt 1. The two locking grooves 103 are respectively connected to the inner groove 101 and pass through the bolt 1, which facilitates the symmetrical arrangement of the clamp head 41. The slot opening 10 extends upward to the top of the thread on the screw surface 1a, and the locking groove 103 is located at the top of the thread, so that the flange nut 2 is located below the clamp head 41 fixed in the locking groove 103.

[0036] Furthermore, the ratchet 3 has a clearance opening 30 for the tail rod 43 to pass through. A protrusion 31 extends downward beside the clearance opening 30. A stop block 431 is provided on the top of the tail rod 43 to abut against the protrusion 31 and lock into place at the bottom of the ratchet 3. After the tail rod 43 passes through the clearance opening 30, it rotates around the central axis of the bolt 1, causing the tail rod 43 to be misaligned with the clearance opening 30. This allows the tail rod 43 to abut against the ratchet 3 through the stop block 431. The protrusion 31 abuts against the side of the stop block 431, restricting the stop block 431 from reversing, thus keeping the tail rod 43 stable after rotation. The shape of the clearance opening 30 is designed to allow the tail rod 43 and the stop block 431 to pass through. The tail rod 43 itself is a straight rod extending vertically downward.

[0037] In this embodiment, the clamp 41 and the stop 431 are strip-shaped structures extending radially along the bolt 1. The clamp 41 and the stop 431 are parallel to each other to adapt to the shape of the bolt 1, so as to facilitate the clamp 41 and the stop 431 to rotate around the central axis of the bolt 1.

[0038] The spring 42 is connected to the clip 41 and the tail rod 43 through two circular connecting pieces that fit the inner groove 101. The two clips 41 extend from the circular connecting pieces, and the stop block 431 extends from the side of the tail rod 43.

[0039] Correspondingly, the ratchet 3 is provided with an opening for the relief screw 1. The ratchet 3 passes through a side groove 102, an inner groove 101 to another side groove 102 in sequence, and passes through the groove opening 10 to connect to the bolt 1. The outer periphery of the ratchet 3 is arranged around the screw surface 1a to mesh with the tooth structure 21.

[0040] To avoid obstructing the normal insertion of the target object into the bolt 1, the outermost end of the clamp 41 is flush with the screw surface 1a, and the clamp 41 is always located in the side groove 102 and does not protrude.

[0041] Specifically, the inner groove 101 is cylindrical, and the two side grooves 102 are located on the same radial direction of the inner groove 101. The regular shape facilitates the drilling of the bolt 1 to form the inner groove 101 and the side grooves 102.

[0042] When the spring 42 is in its original length state, the bottom surface of the tail rod 43 is exposed in the inner groove 101, so that when the flange nut 2 is screwed into the top of the bolt 1, the tail rod 43 will not go too deep into the inner groove 101, making it easier to pull the tail rod 43 to release the lock.

[0043] It should be noted that, in this document, relational terms such as "first" and "second" are used only 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.

[0044] The above description is only a specific embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A retreat prevention bolt assembly characterized by, include: A bolt (1) is provided with a slot (10). The slot (10) extends upward from the bottom of the bolt (1) along the axial direction of the bolt (1). The slot (10) includes an inner slot (101) and two side slots (102) located on both sides of the inner slot (101). The two side slots (102) are respectively connected to the inner slot (101). The inner slot (101) is located on the central axis of the bolt (1) so that the bolt (1) forms a cavity structure. The side slots (102) are located on the threaded surface (1a) of the bolt (1). The top of the side slots (102) extends laterally to form a locking groove (103) parallel to the side slots (102). The locking groove (103) is connected to the inner slot (101). A flange nut (2) is provided with an internal threaded through hole (20) that passes through the bolt (1), and a toothed structure (21) is provided on the bottom surface of the flange nut (2). A ratchet plate (3) is slidably connected to a bolt (1) along a slot (10) and engages with the toothed structure (21) of a flange nut (2); Spring fitting (4), the spring fitting (4) includes a locking head (41), a spring (42) and a tail rod (43). The locking head (41) is fixed in the locking groove (103). The spring (42) is installed in the inner groove (101). The spring (42) connects the locking head (41) and the tail rod (43). The tail rod (43) is locked at the bottom of the ratchet plate (3).

2. The stop bolt assembly of claim 1, wherein, The locking groove (103) is formed by extending laterally from the top of the side groove (102) and then downward. There are two locking grooves (103), which are symmetrically arranged and located on the same radial direction of the bolt (1).

3. The stop bolt assembly of claim 1, wherein, The ratchet (3) has a clearance opening (30) for the tail rod (43) to pass through, and a protrusion (31) extends downward next to the clearance opening (30). The top of the tail rod (43) is provided with a stop (431) for abutting against the protrusion (31) to lock into the bottom of the ratchet (3).

4. The stop bolt assembly of claim 1, wherein, The clamp (41) and the stop (431) are strip-shaped structures extending radially along the bolt (1), and the clamp (41) and the stop (431) are parallel to each other.

5. The stop bolt assembly of claim 1, wherein, The outermost end of the chuck (41) is flush with the screw surface (1a).

6. The retreat bolt assembly of claim 1, wherein, The inner groove (101) is cylindrical, and the two side grooves (102) are located on the same radial direction of the inner groove (101).

7. The retreat bolt assembly of claim 1, wherein, When the spring (42) is in its original length state, the bottom surface of the tail rod (43) is exposed in the inner groove (101).

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