Machine thread bolt structure

Abstract

The utility model relates to a machine tooth bolt structure which is characterized by comprising a screw rod and a nut, the screw rod is connected to the nut, threads are arranged on the periphery of the screw rod, a screwing groove is formed in the center of the nut, a rotating sleeve is arranged on the periphery of the screwing groove in a sleeved mode, the rotating sleeve is connected to the nut in a rotating mode, and a clamping block capable of moving in the radial direction is arranged on the periphery of the nut. The multiple clamping blocks are evenly distributed in the circumferential direction, and the rotating sleeve rotates so that the clamping blocks can synchronously move in the radial direction. The utility model has the following advantage and effect: the convenience of screwing the nut in the screw cap side can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of bolts, in particular to a machine thread bolt structure. Background Art

[0002] A machine thread bolt is a bolt structure that can be used in conjunction with a bolt or used alone for connection. When used alone, since the machine thread bolt is not self-tapping, an internal threaded hole that matches the machine thread bolt thread needs to be opened on the connected workpiece.

[0003] For example, a Chinese patent document with publication number CN217926680U discloses a machine bolt, comprising a threaded portion and a connecting head, wherein a transverse groove is provided at one end of the connecting head away from the threaded portion, and a movable block is provided at a position of the threaded portion close to the connecting head, and the movable block is connected to the inside of the connecting head through a reset member.

[0004] In the above technical solution, by providing a movable block and a reset member, when it is necessary to screw in from the opposite direction, the movable block is moved to a position close to the connecting head by the reset member, so that the nut has enough space to screw into the surface of the threaded portion. At this time, the movable block is loosened to return to its initial state, which can prevent the nut from being accidentally screwed out, thereby ensuring the normal use of the bolt and allowing the nut to be installed from the opposite side, thereby improving the application range of the entire bolt.

[0005] However, in actual use, since there are multiple mobile blocks, when the nut needs to be screwed in from one end of the nut, multiple mobile blocks need to be compressed at the same time, and each mobile block is independent of each other, which increases the difficulty of compressing multiple mobile blocks at the same time, causing certain inconveniences during use. Summary of the invention

[0006] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a machine thread bolt structure, which can improve the convenience of screwing the nut on the nut side.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a machine thread bolt structure, comprising a screw rod and a nut, the screw rod being connected to the nut, the screw rod having a thread on its outer circumference, a screwing groove being provided at the center of the nut, a rotating sleeve being sleeved on the outer circumference of the screwing groove, the rotating sleeve being rotatably connected to the nut, a radially movable clamping block being provided on the outer circumference of the nut, the clamping blocks being in plurality and evenly distributed along the circumference, and the rotating sleeve being rotated so as to enable each clamping block to move synchronously in the radial direction.

[0008] The utility model is further configured as follows: a driving disk is fixedly mounted on the outer periphery of the rotating sleeve, a transmission rod protruding upward is provided on the clamping block, an arc-shaped guide hole cooperating with the transmission rod is provided on the driving disk, the arc-shaped guide holes are multiple and evenly distributed along the circumference, and one side end of the transmission rod is coupled to the arc-shaped guide hole.

[0009] The utility model is further configured as follows: the nut is provided with radially distributed slide grooves, the slide grooves are multiple and evenly distributed along the circumference, the slide grooves are located below the block, a slider extending toward the slide groove is provided at the bottom of the block, and the slider is coupled to the slide groove and can form a sliding fit between the two.

[0010] The utility model is further configured as follows: a spring is provided on the side of the slide groove away from the center of the driving disk, one end of the spring is fixed in the slide groove, and the other end is fixed to the clamping block, and the spring is used to drive the contracted clamping block to reset.

[0011] The utility model is further configured as follows: the cross section of the rotating sleeve is hexagonal.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] By providing a rotating sleeve, when the nut needs to be screwed in from one side of the nut, the rotating sleeve can be rotated to drive multiple clamping blocks to move synchronously inwardly along the radial direction, so that the multiple clamping blocks can be contracted synchronously. At this time, the nut can be smoothly screwed in. Therefore, the technical problem in the prior art that the various clamping blocks are independent of each other and cannot move synchronously, resulting in certain inconveniences during use, is effectively solved, thereby improving the convenience of screwing the nut in on the nut side. After the nut is screwed in from the nut side, the clamping blocks are driven to reset, so that the multiple clamping blocks are ejected again, which can limit the nut and prevent the nut from being accidentally screwed out. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the explosion structure of the utility model;

[0016] Figure 3 It is a schematic diagram of the cross-sectional structure of the utility model. DETAILED DESCRIPTION

[0017] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0019] like Figures 1 to 3 As shown, the utility model discloses a machine thread bolt structure, including a screw rod 1 and a nut 2, the screw rod 1 is connected to the nut 2, the outer periphery of the screw rod 1 is provided with a thread, the center of the nut 2 is provided with a twisting groove 21, the twisting groove 21 is adapted to the head of a hardware tool, so that the screw rod 1 can be rotated by twisting the hardware tool, the outer periphery of the twisting groove 21 is sleeved with a rotating sleeve 3, the rotating sleeve 3 is rotatably connected to the nut 2, the outer periphery of the nut 2 is provided with a radially movable clamping block 4, the clamping block 4 is multiple and evenly distributed along the circumference, and the rotating sleeve 3 is rotated to The blocks 4 are made to move synchronously in the radial direction. When the nut needs to be screwed in from one side of the nut 2, the rotating sleeve 3 can be rotated to drive the multiple blocks 4 to move synchronously inward in the radial direction, so as to achieve the synchronous contraction of the multiple blocks 4. At this time, the nut can be screwed in smoothly, thereby improving the convenience of screwing the nut in on the nut 2 side. After the nut 2 is screwed in from the nut 2 side, the blocks 4 are driven to reset, so that the multiple blocks 4 are ejected again, which can limit the nut and prevent the nut 2 from being accidentally screwed out.

[0020] In this embodiment, the rotating sleeve 3 is rotated to make each block 4 move synchronously in the radial direction. A driving disk 5 is fixedly mounted on the outer periphery of the rotating sleeve 3, and a transmission rod 6 protruding upward is provided on the block 4. An arc-shaped guide hole 51 cooperating with the transmission rod 6 is provided on the driving disk 5. The arc-shaped guide holes 51 are multiple and evenly distributed on the circumference. One side end of the transmission rod 6 is coupled to the arc-shaped guide hole 51, and a radially distributed slide groove 22 is provided on the nut 2. The slide groove 22 is multiple and evenly distributed on the circumference. The slide groove 22 is located at the block 4, a slider 41 extending toward the slide groove 22 is provided at the bottom of the card block 4, and the slider 41 is coupled to the slide groove 22 and can form a sliding fit between the two. After the rotating sleeve 3 is rotated by twisting, the driving disk 5 rotates along with the rotating sleeve 3, so that the rotating disk can drive the transmission rod 6 to move along the path of the arc-shaped guide hole 51 during the rotation process. In this way, under the sliding fit formed between the slider 41 and the slide groove 22, multiple card blocks 4 can be synchronously driven to move in the radial direction, thereby improving the convenience during use.

[0021] In this embodiment, a spring 7 is provided on the side of the slide groove 22 away from the center of the driving disk 5. One end of the spring 7 is fixed in the slide groove 22, and the other end is fixed to the block 4. The spring 7 is used to drive the contracted block 4 to reset. When the block 4 is contracted by rotating the driving disk 5, the spring 7 can be stretched. Therefore, after the rotating sleeve 3 is released, the stretched spring 7 can drive the block 4 to reset quickly, so that the block 4 can be ejected again. After the block 4 is ejected, the setting of the spring 7 can provide a certain support to the block 4 to prevent the block 4 from malfunctioning.

[0022] In this embodiment, the cross section of the rotating sleeve 3 is hexagonal, so a matching inner hexagon socket can be used to screw the rotating sleeve 3 to rotate it, thereby making it more convenient to screw the rotating sleeve 3.

[0023] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A machine thread bolt structure, characterized in that: It includes a screw and a nut, the screw is connected to the nut, the outer circumference of the screw is provided with a thread, the center of the nut is provided with a twisting groove, the outer circumference of the twisting groove is sleeved with a rotating sleeve, the rotating sleeve is rotatably connected to the nut, the outer circumference of the nut is provided with a radially movable block, the blocks are multiple and evenly distributed along the circumference, and the rotating sleeve is rotated to make each block move synchronously in the radial direction.

2. A machine bolt structure according to claim 1, characterized in that: A driving disk is fixedly mounted on the outer periphery of the rotating sleeve, a transmission rod protruding upward is provided on the clamping block, an arc-shaped guide hole cooperating with the transmission rod is provided on the driving disk, the arc-shaped guide holes are multiple and evenly distributed along the circumference, and one end of the transmission rod is coupled to the arc-shaped guide hole.

3. A machine bolt structure according to claim 2, characterized in that: The nut is provided with radially distributed slide grooves, the slide grooves are multiple and evenly distributed along the circumference, the slide grooves are located below the block, and a slider extending toward the slide groove is provided at the bottom of the block, and the slider is coupled to the slide groove and can form a sliding fit between the two.

4. A machine bolt structure according to claim 3, characterized in that: A spring is provided on the side of the slide groove away from the center of the driving disk. One end of the spring is fixed in the slide groove, and the other end is fixed to the clamping block. The spring is used to drive the contracted clamping block to reset.

5. A machine bolt structure according to claim 1, characterized in that: The cross section of the rotating sleeve is hexagonal.

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