CN217301165U - Fastening type screw with conical screw tooth structure - Google Patents

Abstract

The utility model provides a take fastening type screw of circular cone spiral tooth structure, relates to the relevant field of bolt, including the nut, fixedly in the nut be equipped with the centre of a circle of nut is four hanging ring rings of central evenly distributed, the fixed screw rod that is equipped with down on the nut, down in the screw rod fixed be equipped with down the screw rod centre of a circle is four stoppers of central evenly distributed, fixed being equipped with on the screw rod down pushes up the arc piece, the fixed screw rod that is equipped with on the arc piece is moved in the top, through it moves to push up the arc piece top ejecting piece, thereby makes ejecting piece is ejecting, thereby makes on ejecting piece butt arrives the pore wall, thereby passes through unevenness's surface increase on the ejecting piece frictional force between expansion shell and the pore wall.

Description

A type of tightening screw with conical thread structure

technical field

The utility model relates to the bolt related field, in particular to a tightening screw with a conical screw tooth structure.

Background technique

The bolt is a tool that uses the physical and mathematical principles of the circular rotation and friction of the object to tighten the machine parts step by step, because to hang the object on the inclined plane or the vertical plane, it is necessary to use the expansion bolt, and the expansion bolt It is difficult to take out after use, and it will damage objects or walls, so it cannot be used arbitrarily.

Utility model content

The purpose of the present invention is to provide a tightening screw with a conical helical tooth structure to solve the above-mentioned problems in the background art.

The utility model solves its technical problems by adopting the following technical solutions:

A tightening screw with a conical threaded tooth structure includes a nut, in which four strap rings evenly distributed with the center of the nut as the center are fixed, and the nut is fixed on the nut. There is a lower screw, and four limit blocks evenly distributed with the center of the lower screw as the center are fixed in the lower screw, and a top-moving arc-shaped block is fixed on the lower screw, and the top-moving arc-shaped block is fixed on the bottom screw. An upper screw rod is fixed on the upper part, and the upper screw rod is provided with a thread so that a nut can be screwed on.

Preferably, an expansion casing is slidably provided on the nut, and the expansion casing is provided with a left-right symmetrical push-up space, and each push-up space is respectively provided with a left-right symmetrical chute, and each of the top There are ejector blocks slidably in the moving space, each of the ejector blocks is respectively fixed with sliding rods symmetrically left and right, and each of the sliding rods is connected with the expansion shell with a miniature spring. When the push-up arc-shaped block moves upward, the push-up arc-shaped block pushes the push-out block, so that the push-out block is pushed out, so that the push-out block abuts against the hole wall so as to increase the frictional force between the expansion shell and the hole wall through the uneven surface of the ejector block.

Preferably, the expansion shell is provided with four downward limiting grooves evenly distributed with the center of the expansion shell as the center, the expansion shell is provided with screw spaces, and the expansion shell is symmetrical with front and rear, left and right. There are fixed belt loops, each of the fixed belt loops and the hanging belt loop is connected with a solid belt, and the expansion shell is sleeved on the nut, so that the four limit blocks are Snap into the limiting groove, when the nut moves upward, the lower side of the expansion shell is stretched, so that the lower side of the expansion shell presses against the hole wall, so that the bolt is stuck in the hole. In the hole, when the nut moves downward, the expansion shell is moved, thereby pulling the fixing belt loop through the strong belt, so that the expansion shell is closed, so that the bolt can be easily taken out.

Preferably, the upper screw thread is provided with a nut, and the nut is provided with a connection space. When a bolt needs to be installed, the nut is screwed onto the upper screw rod to press the expansion shell, so that the The expansion shell moves.

Preferably, the nut is provided with four ejection spaces evenly distributed with the center of the nut as the center, each of the ejection spaces is respectively provided with abutting blocks, and each of the abutting blocks is respectively connected to the A return spring is connected between the nuts.

Preferably, a rotating ring is slidably provided in the nut, and the rotating ring is rotated to move the rotating ring, so that the protrusion in the rotating ring pushes the abutting block, so that the abutting block is moved. The abutment block moves, so that the abutment block catches the upper screw rod, so that the nut cannot be easily removed.

The advantages and positive effects of the present utility model are:

1. The present invention pushes the ejecting block through the ejecting arc block, so that the ejecting block is ejected, so that the ejecting block abuts on the hole wall, so as to pass the The uneven surface on the ejector block increases the frictional force between the expansion shell and the hole wall.

2. In the present invention, when the nut moves downward, the expansion shell is moved, so that the fixing belt ring is pulled by the strong belt, so that the expansion shell is closed, so that the bolt can be easily taken out .

Description of drawings

The present utility model will be further described below in conjunction with the accompanying drawings and embodiments.

Fig. 1 is the front view structure schematic diagram of a kind of fastening type screw with conical screw tooth structure of the present utility model as a whole and full section;

Fig. 2 is the front view of the expansion shell in the utility model;

Fig. 3 is the sectional view of the A-A direction in Fig. 2 of the utility model;

Fig. 4 is the front view of the nut in the utility model;

FIG. 5 is a cross-sectional view of the utility model in the direction B-B of FIG. 4 .

The symbols in the drawings are described as follows: 11, lower screw; 12, limit block; 13, push-up arc block; 14, strap ring; 15, upper screw; 16, expansion shell; 17, push-up space; 18 , screw space; 19, ejector block; 20, sliding rod; 21, miniature spring; 22, fixed belt ring; 23, firm belt; 24, nut; 25, rotating ring; 26, ejection space; 27, abutment block; 28, connection space; 29, limit slot; 30, return spring.

Detailed ways

The present utility model will now be described in further detail in conjunction with the accompanying drawings. These drawings are all simplified schematic diagrams, and only illustrate the basic structure of the present invention in a schematic manner, so they only show the structures related to the present invention.

Below in conjunction with Fig. 1-5, the present utility model will be described in detail, wherein, for the convenience of description, the orientations mentioned below are now specified as follows: the up, down, left, right, front, and rear directions mentioned below are consistent with the front, back, left, right, up, and down directions of the view direction of Fig. 1, FIG. 1 is a front view of the device of the present invention, and the direction shown in FIG. 1 is consistent with the front, rear, left, right, up, and down directions of the front view of the device of the present invention.

Below in conjunction with accompanying drawing, the utility model embodiment is described in further detail:

Please refer to FIGS. 1-5 , an embodiment provided by the present invention: a tightening screw with a conical thread structure, comprising a nut 10, and the nut 10 is fixedly provided with the nut 10 Four strap rings 14 are evenly distributed with the center of the circle as the center, a lower screw 11 is fixed on the nut 10, and four screws 11 are fixed in the lower screw 11, which are evenly distributed with the center of the lower screw 11 as the center The limit block 12, the lower screw 11 is fixedly provided with a top-moving arc block 13, the top-moving arc block 13 is fixed with an upper screw 15, and the upper screw 15 is threaded so that it can be screwed on the nut.

In addition, in an embodiment, an expansion casing 16 is slidably provided on the nut 10 , and the expansion casing 16 is provided with a left-right symmetrical pushing space 17 , and each of the pushing space 17 is respectively left-right symmetrical. There is a chute, each of the ejection spaces 17 is slidably provided with an ejector block 19, and each of the ejector blocks 19 is respectively fixed with a left and right symmetrical sliding rod 20, each of the sliding rods 20 and the expansion shell 16 are respectively connected with miniature springs 21, when the push-up arc block 13 moves upward, so that the push-up arc-shaped block 13 pushes the push-out block 19, so that The ejector block 19 is ejected, so that the ejector block 19 abuts on the hole wall, thereby increasing the distance between the expansion shell 16 and the hole wall through the uneven surface of the ejector block 19 . friction.

In addition, in an embodiment, the expansion shell 16 is provided with four downward limiting grooves 29 evenly distributed with the center of the expansion shell 16 as the center, and the expansion shell 16 is provided with a screw space 18. Fixed belt rings 22 are fixed symmetrically in the expansion shell 16 in front, rear, left and right directions. Each of the fixed belt loops 22 and the hanging belt loop 14 is respectively connected with a solid belt 23 to connect the expansion shell 16. Sleeve on the nut 10, so that the four limit blocks 12 are snapped into the limit grooves 29, when the nut 10 moves upward, so that the lower side of the expansion shell 16 is blocked. Spread out, so that the underside of the expansion shell 16 presses against the hole wall, so that the bolt is stuck in the hole, when the nut 10 moves down, so that the expansion shell 16 moves, so as to pass the The securing strap 23 pulls the securing strap loop 22 so that the expansion shell 16 closes and the bolts can be easily removed.

In addition, in an embodiment, a nut 24 is threaded on the upper screw rod 15, and a connection space 28 is provided in the nut 24. When a bolt needs to be installed, the nut 24 is screwed to the upper screw rod 15 up, thereby pressing the expansion shell 16, so that the expansion shell 16 moves.

In addition, in an embodiment, the nut 24 is provided with four ejection spaces 26 evenly distributed with the center of the nut 24 as the center, and each of the ejection spaces 26 is slidably provided with abutting blocks. 27. A return spring 30 is connected between each of the abutting blocks 27 and the nut 24 respectively.

In addition, in an embodiment, a rotating ring 25 is slidably provided in the nut 24, and the rotating ring 25 is rotated to move the rotating ring 25, so that the protrusions in the rotating ring 25 are pushed up. The abutment block 27 moves the abutment block 27 , so that the abutment block 27 catches the upper screw rod 15 , so that the nut 24 cannot be easily removed.

In specific implementation, when bolts need to be used, the expansion shell 16 is put on the nut 10, so that the four limit blocks 12 are snapped into the limit grooves 29, and the nuts 24 is slightly screwed onto the upper screw 15 so that the bolts are assembled, and the bolts are installed in the holes, thereby twisting the nut 24, so that the nut 10 is moved upward, so that the expansion shell 16 The lower side is stretched, so that the lower side of the expansion shell 16 is pressed against the hole wall, so that the bolt is stuck in the hole, and the rotating ring 25 is rotated, so that the rotating ring 25 is moved, so that the rotating The protrusion in the ring 25 pushes the abutment block 27, so that the abutment block 27 moves, so that the abutment block 27 catches the upper screw rod 15, so that the nut 24 cannot be easily removed When the bolt needs to be removed, turn off the nut 24, hit the upper screw 15 with a small hammer, so that the nut 10 moves downward, so that the expansion shell 16 moves, so as to pass the The sturdy straps 23 pull on the fixing strap loops 22 so that the expansion shell 16 is closed so that the bolts can be easily removed.

It should be emphasized that the described embodiments of the present utility model are illustrative rather than restrictive, so the present utility model is not limited to the embodiments described in the specific implementation manner. Other embodiments derived from the technical solution of the invention also belong to the protection scope of the present invention.

Claims (6)

1. The utility model provides a take fastening type screw of circular cone thread structure, includes nut (10), its characterized in that: the fixed hanging ring (14) that are equipped with in nut (10), fixed screw rod (11) down of being equipped with on nut (10), fixed four stopper (12) of being equipped with in screw rod (11) down, fixed being equipped with on screw rod (11) down pushes up and moves arc piece (13), the top is moved arc piece (13) and is gone up fixed screw rod (15) of being equipped with.

2. The fastening type screw with the conical screw tooth structure according to claim 1, characterized in that: slide on nut (10) and be equipped with inflation shell (16), bilateral symmetry's be equipped with top sliding space (17), every in inflation shell (16) the spout that is equipped with of bilateral symmetry respectively in top sliding space (17), every slide respectively in top sliding space (17) and be equipped with ejecting piece (19), every on ejecting piece (19) respectively bilateral symmetry's fixed slide bar (20), every slide bar (20) respectively with be connected with between inflation shell (16) miniature spring (21).

3. The fastening screw with the conical screw tooth structure according to claim 2, wherein: the expansion shell (16) is internally provided with four limiting grooves (29) with downward openings, the expansion shell (16) is internally provided with a screw space (18), the expansion shell (16) is internally fixedly provided with four fixed belt rings (22) in a front-back and left-right symmetrical manner, and each fixed belt ring (22) is connected with a firm belt (23) between the belt hanging ring (14).

4. The fastening screw with the conical screw tooth structure according to claim 1, wherein: the upper screw (15) is provided with a nut (24) in a threaded manner, and a connecting space (28) is arranged in the nut (24).

5. The fastening screw with the conical screw tooth structure according to claim 4, wherein: four ejection spaces (26) are arranged in the nut (24), abutting blocks (27) are respectively arranged in the ejection spaces (26) in a sliding mode, and a return spring (30) is connected between each abutting block (27) and the nut (24).

6. The fastening screw with the conical screw tooth structure according to claim 4, wherein: a rotating ring (25) is arranged in the nut (24) in a sliding manner.

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