CN214499691U

CN214499691U - Combined eccentric plastic expansion nut

Info

Publication number: CN214499691U
Application number: CN202120227808.9U
Authority: CN
Inventors: 蔡道凯
Original assignee: Chuanlian Technology Group Co ltd
Current assignee: Chuanlian Technology Group Co ltd
Priority date: 2021-01-27
Filing date: 2021-01-27
Publication date: 2021-10-26
Anticipated expiration: 2031-01-27

Abstract

The utility model discloses a modular eccentric plastics expansion nut relates to five metals technical field. The utility model provides a modular eccentric plastics inflation nut, includes the swivel nut, first screw hole has been seted up to swivel nut top one side, first internal thread has been seted up to first screw hole inner wall, first internal thread inner wall spiro union has the external screw thread, external screw thread bottom fixedly connected with double-screw bolt, the wedge groove has been seted up to the swivel nut bottom, wedge groove one side fixedly connected with stopper, the spacing groove has been seted up at stopper bottom center. The utility model discloses a setting of wedge groove, wedge, inflation piece and stud has realized the double-screw bolt that can pass through eccentric settings to it makes inflation piece expand and fix to one side to drive the wedge upwards to extrude the wedge groove, even also can accomplish fixedly through eccentric setting when the inaccurate needs of hole site punch again, can adapt to the hole that the size differs, shortens process time, has improved work efficiency.

Description

Combined eccentric plastic expansion nut

Technical Field

The utility model relates to a five metals technical field specifically is a modular eccentric plastics expansion nut.

Background

The expansion screw is generally a plastic expansion screw, and is composed of a screw rod, an expansion pipe and other components, the tail part of the screw rod is conical, the inner diameter of the cone is larger than that of the expansion pipe, when a nut is screwed, the screw rod moves outwards, the cone part moves through the axial movement of the screw thread, so that a large positive pressure is formed on the outer peripheral surface of the expansion pipe, the angle of the cone is small, so that a friction self-locking is formed between the wall body, the expansion pipe and the cone, and a fixing effect is achieved, one end of the screw is a screw thread, the other end of the screw has a taper, an iron pipe is wrapped outside the screw thread, one half of the iron pipe is provided with a plurality of notches, the steel pipe and the notches are plugged into a hole drilled in a wall together, then the nut is locked, the screw is pulled outwards by the nut, the taper is pulled into the iron pipe, and the iron pipe is expanded and is tightly fixed on the wall, and is generally used for a protective fence, a rain cover, an air conditioner and the like, Fastening on bricks and the like.

In the course of working, often need be in the same place two objects that do not need often to dismantle fast fixed, at this moment need fix through punching installation expansion nut, fix a position inaccurate sometimes and cause unable adaptation, and then punch once more and lead to two hole coincidences, thereby ordinary expansion nut can only adapt to the hole of specific size because of the relation of size and lead to unable fixing, need purchase or with trading expansion nut, has increased operating time, has reduced labor efficiency.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a modular eccentric plastics expansion nut to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a combined eccentric plastic expansion nut comprises a threaded sleeve, wherein a first threaded hole is formed in one side of the top of the threaded sleeve, a first internal thread is formed in the inner wall of the first threaded hole, an external thread is screwed on the inner wall of the first internal thread, a stud is fixedly connected to the bottom of the external thread, a wedge-shaped groove is formed in the bottom of the threaded sleeve, a limiting block is fixedly connected to one side of the wedge-shaped groove, a limiting groove is formed in the center of the bottom of the limiting block, a sliding groove is fixedly connected to the other end of the limiting groove, a sliding block is slidably connected to the inner wall of the sliding groove, a second threaded hole is formed in the inner wall of the second threaded hole, a second internal thread is formed in the inner wall of the second threaded hole, the first internal thread, the second internal thread and the external thread are matched, a connecting block is fixedly connected to one side of the sliding block and is slidably connected to the limiting groove, and a wedge-shaped block is fixedly connected to the other end of the connecting block, the outer sides of the wedge-shaped grooves are fixedly connected with expansion blocks respectively, the wedge-shaped blocks are matched with the wedge-shaped grooves, and the expansion grooves are formed between the expansion blocks and the wedge-shaped grooves.

Preferably, the top of the threaded sleeve is fixedly connected with a positioning ring, the bottom edge of the positioning ring is fixedly connected with a positioning pin, one side of the top of the positioning ring is fixedly connected with a limiting ring, a guide hole is formed in the limiting ring, and the guide hole is matched with the first threaded hole.

Preferably, the equal fixedly connected with antiskid tooth of swivel nut outer wall, and antiskid tooth evenly distributed in the swivel nut outside, wedge lateral wall fixedly connected with antiskid plastics, and antiskid plastics and inflation piece internal surface looks adaptation.

Preferably, the threaded sleeve, the wedge-shaped block, the sliding block and the connecting block are all made of plastic materials.

Preferably, the wedge block, the connecting block, the sliding block and the second threaded hole are of an integrally formed structure.

Preferably, the threaded sleeve, the positioning pin and the positioning ring are of an integrally formed structure.

Compared with the prior art, the beneficial effects of the utility model are that:

(1) the utility model provides a modular eccentric plastics expansion nut, through the setting of wedge groove, wedge, inflation piece and screw, has realized the double-screw bolt that can pass through eccentric settings to it upwards extrudees the wedge and makes inflation piece expand and fix to one side to drive the wedge, even also can accomplish fixedly through eccentric setting when the inaccurate needs of hole site punch again, can adapt to the hole that the size differs, shortens process time, has improved work efficiency.

(2) The utility model provides a modular eccentric plastics inflation nut, through the setting of antiskid tooth and inflation piece, has realized further increase tensile force under the existing tensile force of inflation piece, avoids leading to loosening because of vibrations, has improved fixed effect, reduces the rework rate.

Drawings

Fig. 1 is a schematic structural view of a main sectional view of the present invention;

fig. 2 is a schematic left sectional view of the present invention;

fig. 3 is a schematic view of the bottom view structure of the present invention;

fig. 4 is a schematic view of the structure of the enlarged partial cross-sectional view of the present invention.

In the figure: 1. a threaded sleeve; 101. anti-slip teeth; 103. an expansion tank; 104. an expansion block; 105. a sliding groove; 106. a limiting groove; 107. a limiting block; 108. a first threaded hole; 109. a first internal thread; 2. a positioning ring; 201. positioning pins; 202. a limiting ring; 203. a guide hole; 3. a wedge-shaped groove; 4. a wedge block; 401. connecting blocks; 402. a slider; 403. a second threaded hole; 404. a second internal thread; 5. a stud; 501. and (4) external threads.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It should be noted that, in the description of the present invention, the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of description and simplification of the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

Further, it will be appreciated that the dimensions of the various elements shown in the figures are not drawn to scale, for ease of description, and that the thickness or width of some layers may be exaggerated relative to other layers, for example.

It should be noted that like reference numerals and letters refer to like items in the following figures, and thus, once an item is defined or illustrated in one figure, it will not need to be further discussed or illustrated in detail in the description of the following figure.

As shown in fig. 1-4, the utility model provides a technical solution: a combined eccentric plastic expansion nut comprises a threaded sleeve 1, anti-slip teeth 101 are fixedly connected to the outer wall of the threaded sleeve 1, the anti-slip teeth 101 are uniformly distributed on the outer side of the threaded sleeve 1, anti-slip plastic is fixedly connected to the side wall of a wedge block 4 and is matched with the inner surface of an expansion block 104, a positioning ring 2 is fixedly connected to the top of the threaded sleeve 1, positioning pins 201 are fixedly connected to the bottom edge of the positioning ring 2, a limiting ring 202 is fixedly connected to one side of the top of the positioning ring 2, a guide hole 203 is formed in the limiting ring 202 and is matched with a first threaded hole 108, a first threaded hole 108 is formed in one side of the top of the threaded sleeve 1, a first internal thread 109 is formed in the inner wall of the first threaded hole 108, an external thread 501 is screwed on the inner wall of the first internal thread 109, a wedge-shaped stud 5 is fixedly connected to the bottom of the external thread 501, a wedge-shaped groove 3 is formed in the bottom of the threaded sleeve 1, a limiting block 107 is fixedly connected to one side of the wedge-shaped groove 3, the limiting groove 106 is formed in the center of the bottom of the limiting block 107, the sliding groove 105 is fixedly connected to the other end of the limiting groove 106, the sliding block 402 is slidably connected to the inner wall of the sliding groove 105, the second threaded hole 403 is formed in the inner wall of the sliding block 402, the second internal thread 404 is formed in the inner wall of the second threaded hole 403, the first internal thread 109, the second internal thread 404 is matched with the external thread 501, the connecting block 401 is fixedly connected to one side of the sliding block 402, the connecting block 401 is slidably connected with the limiting groove 106, the wedge-shaped block 4 is fixedly connected to the other end of the connecting block 401, the thread insert 1, the wedge-shaped block 4, the sliding block 402 and the connecting block 401 are made of plastic materials, the expansion block 104 is fixedly connected to the outer side of the wedge-shaped groove 3, the expansion groove 103 is formed between the expansion block 104 and the wedge-shaped groove 3, the thread insert 1, the positioning pin 201 and the positioning ring 2 are of an integrally formed structure, the wedge-shaped block 4, the connecting block 401, The slider 402 and the second threaded hole 403 are integrally formed.

The working principle is as follows: when the expansion nut is used, firstly, a prefabricated hole needs to be formed in an installation position, then the screw sleeve 1 is placed into the prefabricated hole, the bottom of the positioning ring 2 is abutted against the top of the prefabricated hole, meanwhile, the positioning pin 201 is inserted into the positioning groove to prevent rotation, then, the stud 5 is inserted into the guide hole 203, then, the stud 5 is rotated, meanwhile, the external thread 501 is matched with the first internal thread 109, the stud 5 is pushed downwards, further, the stud 5 is inserted into the second internal thread 404 in the sliding block 402 to continue to move downwards, then, the limiting ring 202 at the top of the stud 5 is abutted against the limiting ring 202 at the top of the positioning ring 2, the stud 5 is continuously rotated, meanwhile, the sliding block 402 is upwards moved due to the fact that the second internal thread 404 is fixedly connected inside, meanwhile, the connecting block 401 and the wedge block 4 are fixed on the sliding block 402 to further move upwards together, then, the wedge 4 extrudes the wedge groove 3, and meanwhile, the expansion block 104 is outwards expanded to complete fixation, the anti-slip teeth 101 on the outside of the thread insert 1 are then further fixed.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a modular eccentric plastics expansion nut, includes swivel nut (1), its characterized in that: the screw sleeve is characterized in that a first threaded hole (108) is formed in one side of the top of the screw sleeve (1), a first internal thread (109) is formed in the inner wall of the first threaded hole (108), an external thread (501) is screwed on the inner wall of the first internal thread (109), a stud (5) is fixedly connected to the bottom of the external thread (501), a wedge-shaped groove (3) is formed in the bottom of the screw sleeve (1), a limit block (107) is fixedly connected to one side of the wedge-shaped groove (3), a limit groove (106) is formed in the center of the bottom of the limit block (107), a sliding groove (105) is fixedly connected to the other end of the limit groove (106), a sliding block (402) is slidably connected to the inner wall of the sliding groove (105), a second threaded hole (403) is formed in the sliding block (402), a second internal thread (404) is formed in the inner wall of the second threaded hole (403), and the first internal thread (109), the second internal thread (404) and the external thread (501) are matched, slider (402) one side fixedly connected with connecting block (401), and connecting block (401) and spacing groove (106) sliding connection, connecting block (401) other end fixedly connected with wedge (4), fixedly connected with inflation piece (104) respectively in wedge groove (3) outside, and wedge (4) and wedge groove (3) looks adaptation, inflation groove (103) have been seted up between inflation piece (104) and wedge groove (3).

2. A combined eccentric plastic expansion nut as claimed in claim 1, wherein: the top of the screw sleeve (1) is fixedly connected with a positioning ring (2), the bottom edge of the positioning ring (2) is fixedly connected with a positioning pin (201), one side of the top of the positioning ring (2) is fixedly connected with a limiting ring (202), a guide hole (203) is formed in the limiting ring (202), and the guide hole (203) is matched with the first threaded hole (108).

3. A combined eccentric plastic expansion nut as claimed in claim 1, wherein: equal fixedly connected with antiskid tooth (101) of swivel nut (1) outer wall, and antiskid tooth (101) evenly distributed in the swivel nut (1) outside, wedge (4) lateral wall fixedly connected with antiskid plastic, and antiskid plastic and inflation piece (104) internal surface looks adaptation.

4. A combined eccentric plastic expansion nut as claimed in claim 1, wherein: the thread insert (1), the wedge block (4), the sliding block (402) and the connecting block (401) are all made of plastic materials.

5. A combined eccentric plastic expansion nut as claimed in claim 1, wherein: the wedge block (4), the connecting block (401), the sliding block (402) and the second threaded hole (403) are of an integrally formed structure.

6. A combined eccentric plastic expansion nut as claimed in claim 1, wherein: the threaded sleeve (1), the positioning pin (201) and the positioning ring (2) are of an integrally formed structure.