CN214661349U

CN214661349U - Fastener capable of preventing loosening

Info

Publication number: CN214661349U
Application number: CN202120750277.1U
Authority: CN
Inventors: 曾梅
Original assignee: Dongguan Shanglixuan Hardware Products Co ltd
Current assignee: Dongguan Shanglixuan Hardware Products Co ltd
Priority date: 2021-04-13
Filing date: 2021-04-13
Publication date: 2021-11-09
Anticipated expiration: 2031-04-13

Abstract

The utility model discloses a prevent not hard up fastener, the protective housing comprises a protective housing, the protective housing surface runs through and has seted up the rectangle recess, the inside threaded rod that is equipped with of protective housing, threaded rod surface top is equipped with the activity ring, the ring channel has been seted up at the middle part all around to the activity ring. The utility model provides a pair of prevent not hard up fastener, drive the rotation of threaded rod through rotating the screw, the activity ring carries out relative motion downstream simultaneously, the second bracing piece supports first bracing piece and makes first bracing piece expand to the outside, first bracing piece drives the broken wall piece and continues the expansion, the broken wall piece stretches to the inside that punches, fix the device in hole department, a plurality of positions insert, when need not using, the rotation of screw drive threaded rod is rotated to the opposite direction, the activity ring carries out relative motion upward movement simultaneously, the first bracing piece of second bracing piece shrink makes first bracing piece shrink to inside, reach stable and dismantle convenient effect.

Description

Fastener capable of preventing loosening

Technical Field

The utility model relates to a fastener technical field especially relates to a prevent not hard up fastener.

Background

The fastener is also called a standard component in the market, is a general name of a mechanical part used when two or more parts are fastened and connected into a whole, and is characterized in that the fastener has various varieties and specifications and different performance and purposes, and has extremely high standardization, serialization and universalization degrees, the expansion screw is also one of the fasteners, the expansion screw is generally a metal expansion screw, and the expansion screw is fixed by utilizing wedge-shaped inclination to promote expansion to generate friction gripping force so as to achieve the fixing effect.

However, the traditional expansion screw is not very reliable in the long-term use process, and if the load has great vibration, the loosening can occur, so that the large-vibration objects such as some ceiling fans and the like can not be installed, meanwhile, the original expansion screw is not large enough and not stable enough in tension, so that the installed objects can be loosened and dropped after being hung for a long time, and the installation and the disassembly and the replacement are not convenient.

To this end, we propose a loosening prevention fastener to solve the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a fastening piece for preventing looseness.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a prevent not hard up fastener, includes the protective housing, the protective housing surface runs through and has seted up the rectangle recess, the inside threaded rod that is equipped with of protective housing, threaded rod surface top is equipped with the loose ring, the ring channel has been seted up at loose ring middle part all around, the inside rotation of ring channel is connected with first annular pole, first annular pole outer wall rotates and is connected with first bracing piece, first bracing piece bottom fixed mounting has broken wall piece, first bracing piece middle part is connected with the second bracing piece, second bracing piece bottom fixed mounting has the third connecting rod, second stopper has been cup jointed in third connecting rod outer wall middle part activity, second stopper bottom fixed mounting has the second annular pole, second annular pole inner wall fixed mounting has the ring.

Preferably, first stopper is installed to first annular pole top circumference equidistance all around, first stopper one side middle part is run through and is seted up the hole, and the first connecting rod has been cup jointed in the inside activity of hole, the opening has been seted up at first bracing piece top, and opening inner wall both sides respectively with first connecting rod both ends fixed connection.

Preferably, the movable ring is internally provided with a thread groove in a penetrating manner, the size value of the thread groove is matched with the size value of the external thread of the threaded rod, and the movable ring is meshed with the threaded rod.

Preferably, the length value of the rectangular groove is greater than that of the first supporting rod, the thickness value of the protective shell is greater than that of the wall breaking block, and the sum of the diameter value of the outer wall of the second annular rod and the thickness value of the second limiting block is equal to that of the outer wall of the first annular rod.

Preferably, the ring is fixed in the middle of the threaded rod, and the sum of the diameter value of the outer wall of the second annular rod and the thickness value of the second limiting block is smaller than the diameter value of the inner wall of the protective shell.

Preferably, a hole is formed in the middle of one side of the first supporting rod in a penetrating mode, a second connecting rod is movably sleeved inside the hole, a groove is formed in the top of the second supporting rod, and two ends of the second connecting rod are fixedly mounted on two sides of the inner wall of the groove respectively.

Preferably, the bottom of the threaded rod is fixedly provided with a screw, the width of the screw is larger than that of the outer wall of the protective shell, and a gap is reserved between the top of the screw and the bottom of the protective shell.

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

1. through the broken wall piece that sets up, first bracing piece and first annular pole, reach the stable condition that can not become flexible of installation, the rotation screw drives the rotation of threaded rod, the activity ring carries out relative motion downstream simultaneously, support first bracing piece through the second bracing piece and make first bracing piece expand to the outside, first bracing piece drives the broken wall piece and continues the expansion, the broken wall piece is stretched to the inside that punches, fix the device in hole department, thereby a plurality of position insert and reach stable effect.

2. Reach installation back convenient to detach's effect through the threaded rod and the activity ring that set up, when need not using, the rotation of screw drive threaded rod is rotated in the opposite direction, and the activity ring carries out relative motion upward movement simultaneously, contracts first bracing piece through the second bracing piece and makes first bracing piece contract to inside, when first bracing piece contracts to the rectangle recess, outwards pull the screw can to reach and dismantle convenient effect.

Drawings

Fig. 1 is an overall structure diagram of a loosening prevention fastener according to the present invention;

FIG. 2 is a schematic view of the internal structure of FIG. 1;

FIG. 3 is a schematic view of FIG. 2 with the screw and threaded shaft removed;

FIG. 4 is an enlarged view of the part A of FIG. 3;

fig. 5 is a schematic view of a connection structure of the second support bar and the first support bar.

In the figure: 1. a protective shell; 2. a rectangular groove; 3. a screw; 4. a threaded rod; 5. a movable ring; 51. an annular groove; 6. a first annular rod; 61. a first stopper; 62. a first connecting rod; 7. breaking the wall block; 8. a first support bar; 81. a second connecting rod; 9. a second support bar; 11. a circular ring; 111. a second annular rod; 112. a second limiting block; 113. and a third connecting rod.

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.

Referring to fig. 1-5, a fastener for preventing looseness comprises a protective shell 1, a rectangular groove 2 is formed in one side of the top of the protective shell 1, a threaded rod 4 is movably sleeved in the protective shell 1, a movable ring 5 is movably installed on the outer wall of the top of the threaded rod 4, the movable ring 5 moves relatively when the threaded rod 4 rotates, an annular groove 51 is formed in the middle of the periphery of the movable ring 5, a first annular rod 6 is movably sleeved in the annular groove 51, so that a first support rod 8 cannot rotate along with the movable ring 5 when the movable ring rotates, first limit blocks 61 are installed on the periphery of the top of the first annular rod 6 in a circumferentially equidistant manner, a hole is formed in the middle of one side of each first limit block 61, a first connecting rod 62 is movably sleeved in the hole, an opening is formed in the top of the first support rod 8, two sides of the inner wall of the opening are respectively fixedly connected with two ends of the first connecting rod 62, a hole is formed in the middle of one side of the first support rod 8, the second connecting rod 81 is sleeved in the hole in the movable mode, a groove is formed in the top of the second supporting rod 9, two ends of the second connecting rod 81 are fixedly mounted on two sides of the inner wall of the groove respectively, a third connecting rod 113 is fixedly mounted at the bottom of the second supporting rod 9, a second limiting block 112 is sleeved in the middle of the outer wall of the third connecting rod 113 in the movable mode, the first supporting rod 8 and the second supporting rod 9 can move, a second annular rod 111 is fixedly mounted at the bottom of the second limiting block 112, and a circular ring 11 is fixedly mounted on the inner wall of the second annular rod 111.

The length value of the rectangular groove 2 is larger than that of the first supporting rod 8, the first supporting rod 8 can be positioned inside when not in use, so that the wall can be conveniently inserted after punching, the number of the first supporting rods 8 is eight, the bottom parts of the eight first supporting rods 8 are fixedly provided with the wall breaking blocks 7, the bottom pressure of the wall breaking blocks 7 is increased by the pointed bottom parts, the thickness value of the protective shell 1 is larger than the width value of the wall breaking blocks 7, the wall can be conveniently inserted after punching, the number of the first limiting blocks 61, the number of the first connecting rods 62, the number of the first supporting rods 8, the number of the second connecting rods 81, the number of the second supporting rods 9, the number of the second limiting blocks 112 and the number of the third connecting rods 113 are eight, the first limiting blocks 112 and the eight first limiting blocks 61 are circumferentially equidistantly arranged, the eight second limiting blocks 112 and the eight first limiting blocks 61 correspond to one another and are positioned on the same vertical plane in pairs, make first bracing piece 8 and second bracing piece 9 can transmit, and diversified power of having an effect increases stability.

A thread groove is formed in the movable ring 5 in a penetrating manner, the size value of the thread groove is matched with the size value of the external thread of the threaded rod 4, the movable ring 5 is meshed and connected with the threaded rod 4, the movable ring 5 moves relatively when the threaded rod 4 rotates, the sum of the diameter value of the outer wall of the second annular rod 111 and the thickness value of the second limiting block 112 is equal to the diameter value of the outer wall of the first annular rod 6, the first supporting rod 8 is contracted without tilting, the ring 11 is fixed in the middle of the threaded rod 4, the sum of the diameter value of the outer wall of the second annular rod 111 and the thickness value of the second limiting block 112 is smaller than the diameter value of the inner wall of the protective shell 1, the protective shell 1 cannot rotate along with the threaded rod 4 when the threaded rod 4 rotates, the bottom of the threaded rod 4 is fixedly provided with a screw 3, the width value of the screw 3 is larger than that of the outer wall of the protective shell 1, and a gap is reserved between the top of the screw 3 and the bottom of the protective shell 1, the protective shell 1 is prevented from falling off, and the friction force between the threaded rod 4 and the protective shell 1 is reduced.

The working principle of the utility model is that, at first punch in the place that needs to use, the hole size is similar with protective housing 1 size, rotating screw 3, drive the rotation of threaded rod 4, simultaneously activity ring 5 carries out relative motion downstream, support first bracing piece 8 through second bracing piece 9 and make first bracing piece 8 expand to the outside, when broken wall piece 7 spills protective housing 1 part, then with in the 1 patchhole of protective housing, it is outside to remain screw 3, continue to rotate screw 3, first bracing piece 8 drives broken wall piece 7 and continues the expansion like this, broken wall piece 7 stretches to the inside that punches, it can to fix the device in hole department.

The above embodiments are preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be equivalent replacement modes, and all are included in the scope of the present invention.

In the description of the present invention, it is to be understood that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and do not indicate or imply that the equipment or elements 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.

Claims

1. The fastener capable of preventing looseness comprises a protective shell (1) and is characterized in that a rectangular groove (2) is formed in the surface of the protective shell (1) in a penetrating mode, a threaded rod (4) is arranged inside the protective shell (1), a movable ring (5) is arranged on the top of the surface of the threaded rod (4), a ring groove (51) is formed in the middle of the periphery of the movable ring (5), a first annular rod (6) is rotatably connected inside the ring groove (51), a first supporting rod (8) is rotatably connected to the outer wall of the first annular rod (6), a wall breaking block (7) is fixedly installed at the bottom of the first supporting rod (8), a second supporting rod (9) is connected to the middle of the first supporting rod (8), a third connecting rod (113) is fixedly installed at the bottom of the second supporting rod (9), and a second limiting block (112) is movably sleeved in the middle of the outer wall of the third connecting rod (113), the bottom of the second limiting block (112) is fixedly provided with a second annular rod (111), and the inner wall of the second annular rod (111) is fixedly provided with a circular ring (11).

2. The anti-loosening fastener according to claim 1, wherein first limiting blocks (61) are circumferentially and equidistantly arranged around the top of the first annular rod (6), a hole is formed in the middle of one side of each first limiting block (61), a first connecting rod (62) is movably sleeved inside the hole, an opening is formed in the top of the first supporting rod (8), and two sides of the inner wall of the opening are fixedly connected with two ends of the first connecting rod (62) respectively.

3. The fastener for preventing looseness according to claim 1, wherein a threaded groove penetrates through the movable ring (5), the size value of the threaded groove is matched with the size value of the external thread of the threaded rod (4), and the movable ring (5) is in meshed connection with the threaded rod (4).

4. A fastener for preventing loosening according to claim 1, characterized in that the value of the length of said rectangular recess (2) is greater than the value of the length of said first supporting rod (8), the value of the thickness of said protective shell (1) is greater than the value of the width of the broken-wall block (7), and the sum of the value of the diameter of the outer wall of the second annular rod (111) and the value of the thickness of the second stopper (112) is equal to the value of the diameter of the outer wall of said first annular rod (6).

5. A fastener for preventing loosening according to claim 1, characterized in that said annular ring (11) is fixed to the middle of the threaded shank (4), the sum of the value of the diameter of the outer wall of said second annular shank (111) and the value of the thickness of the second stopper (112) being smaller than the value of the diameter of the inner wall of said protective casing (1).

6. The anti-loosening fastener according to claim 1, wherein a hole is formed in the middle of one side of the first support rod (8), a second connecting rod (81) is movably sleeved inside the hole, a groove is formed in the top of the second support rod (9), and two ends of the second connecting rod (81) are fixedly mounted on two sides of the inner wall of the groove respectively.

7. The anti-loosening fastener according to claim 1, wherein a screw (3) is fixedly mounted at the bottom of the threaded rod (4), the width of the screw (3) is larger than that of the outer wall of the protective shell (1), and a gap is reserved between the top of the screw (3) and the bottom of the protective shell (1).