CN214698646U

CN214698646U - Fastener structure convenient to dismantle

Info

Publication number: CN214698646U
Application number: CN202120676288.XU
Authority: CN
Inventors: 张帅
Original assignee: Zhenjiang Hefeng Fastener Manufacturing Co ltd
Current assignee: Zhenjiang Hefeng Fastener Manufacturing Co ltd
Priority date: 2021-04-01
Filing date: 2021-04-01
Publication date: 2021-11-12
Anticipated expiration: 2031-04-01

Abstract

The utility model provides a fastener structure convenient to dismantle, including bolt head, screw rod, nut, upper locating sleeve, first lower locating sleeve, second lower locating sleeve, spacing post, piston piece, spring, the top side of upper locating sleeve is equipped with the first fixture block that is used for spacing in the draw-in groove of bolt head bottom side, and its bottom side is equipped with the second fixture block that is used for spacing in the draw-in groove of first connecting workpiece top side, the top side of first lower locating sleeve is equipped with the third fixture block that is used for spacing in the draw-in groove of second connecting workpiece, the bottom side of first lower locating sleeve is seted up the piston groove, dispose the piston piece in the piston groove, still be equipped with the spring that supports and presses the piston piece in the piston groove, fixed with the spacing post on the piston piece, spacing post connection second lower locating sleeve, the top side of nut is seted up the constant head tank, and the bottom side of second lower locating sleeve is equipped with the locating piece that cooperates in the constant head tank, the utility model discloses can comparatively convenient realization quick installation and dismantlement of work piece, and the friction damage to the surface of the workpiece is small during installation.

Description

Fastener structure convenient to dismantle

Technical Field

The utility model relates to a fastener structure, especially a fastener structure convenient to dismantle.

Background

Bolts and nuts are used as fasteners which are matched with each other and widely applied, and the use figure of the fasteners can be seen on various machines, equipment, vehicles, ships, railways, bridges, buildings, structures, tools, instruments, appliances, supplies and the like. However, the fit of the bolt and the nut used at present is generally low with the fit of the workpiece, that is, in order to avoid the rotation of the bolt in the workpiece, or the connecting hole in the workpiece needs to be set as the internal thread hole matched with the bolt thread, or when the nut is in threaded connection with the bolt, the nut needs to be screwed and compressed on the surface of the workpiece, so that the nut and the surface of the workpiece form a large static friction force, but the dismounting and the mounting of the bolt are time-consuming and labor-consuming, and meanwhile, when the nut is screwed on the surface of the workpiece, the friction with the surface of the workpiece is very easy to occur.

Therefore, a fastening piece structure which can conveniently and rapidly install and detach the workpiece and has small friction damage to the surface of the workpiece during installation and is convenient to detach is urgently needed.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a fastener structure convenient to dismantle, the quick installation and the dismantlement of realization work piece that can be comparatively convenient, and the friction damage to workpiece surface is less during the installation.

The utility model provides a following technical scheme:

a fastener structure convenient to disassemble comprises a bolt head, a screw rod, a nut, an upper locating sleeve, a first lower locating sleeve, a second lower locating sleeve, a limiting column, a piston block and a spring, wherein the bolt head is connected to the top end of the screw rod, the upper locating sleeve is sleeved outside the screw rod and is positioned between the bolt head and a first connecting workpiece, the top side of the upper locating sleeve is provided with at least one group of first clamping blocks for limiting in clamping grooves at the bottom side of the bolt head, the bottom side of the upper locating sleeve is provided with at least one group of second clamping blocks for limiting in clamping grooves at the top side of the first connecting workpiece, the top side of the first lower locating sleeve is provided with at least one group of third clamping blocks for limiting in clamping grooves of the second connecting workpiece, the bottom side of the first lower locating sleeve is provided with at least two groups of piston grooves, piston blocks are arranged in the piston grooves, the spring which downwards supports and presses the piston block is also arranged in the piston grooves, and the limiting column extending out of the piston grooves is fixed on the piston block, the top side of position sleeve under the second is connected to spacing post, and the position sleeve cover is established outside the screw rod under the second, and screw rod threaded connection has the nut, and at least a set of constant head tank has been seted up to the top side of nut, and the bottom side of position sleeve is equipped with the locating piece of cooperation in the constant head tank under the second.

Preferably, at least one group of limiting columns is sleeved with a rubber sleeve positioned between the first lower positioning sleeve and the second lower positioning sleeve, and the annular rubber sleeve is provided with a notch.

Preferably, two groups of first clamping blocks which are symmetrically distributed around the screw rod are arranged on the top side of the upper positioning sleeve.

Preferably, two sets of second clamping blocks which are symmetrically distributed around the screw rod are arranged on the bottom side of the upper positioning sleeve.

Preferably, two sets of piston grooves symmetrically distributed around the screw are formed in the bottom side of the first lower positioning sleeve.

Preferably, the top side of the nut is provided with two groups of positioning grooves which are symmetrically distributed relative to the screw rod.

The utility model has the advantages that:

1. the upper positioning sleeve, the first lower positioning sleeve and the second lower positioning sleeve are sleeved outside the screw, the upper positioning sleeve is used for limiting the position between the bolt head and the first connecting workpiece, the first lower positioning sleeve and the second lower positioning sleeve are limited between the nut and the second connecting workpiece, and the limiting columns, the piston blocks and the springs are arranged between the first lower positioning sleeve and the second lower positioning sleeve to realize the circumferential and longitudinal limiting of the screw, namely, the second lower positioning sleeve can be pushed upwards to enable the nut to be screwed on the screw, and after the second lower positioning sleeve is loosened, the second lower positioning sleeve can move downwards under the pressure of the springs, and the positioning blocks below the second lower positioning sleeve are correspondingly embedded into the positioning grooves, so that the circumferential rotation of the screw relative to the workpiece can be avoided, the circumferential rotation of the nut relative to the screw can also be avoided, and the rotational friction between the upper positioning sleeve, the first lower positioning sleeve and the surface of the workpiece can not occur during installation, therefore, the damage to the surface of the workpiece is small, the screwing distance is small when the nut is connected, and the nut can be prevented from being easily separated from the screw rod in a rotating mode;

2. in order to ensure that the spring is spacing in the second connecting workpiece clamping groove with the third chuck piece, the locating piece is spacing in the constant head tank, so the accessible is equipped with a rubber sleeve that is located between first position sleeve and the second position sleeve under at least a set of spacing post overcoat, a breach has been seted up to annular rubber sleeve, make after the installation is accomplished, the accessible breach pulls open the rubber sleeve, make the rubber sleeve spacing under first position sleeve and second between the position sleeve, thereby the stability effect of connection can further improve.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a sectional view of the structure of the present invention;

FIG. 2 is a schematic structural view of a rubber boot;

notation in the figure: the device comprises a bolt head 1, a screw rod 2, a nut 3, an upper locating sleeve 4, a first lower locating sleeve 5, a second lower locating sleeve 6, a limiting column 7, a piston block 8, a spring 9, a first connecting workpiece 10, a second connecting workpiece 11, a first clamping block 12, a second clamping block 13, a third clamping block 14, a locating block 15 and a rubber sleeve 16.

Detailed Description

Example 1

As shown in fig. 1, a sectional view of a structure of a fastener structure convenient to disassemble includes a bolt head 1, a screw rod 2, a nut 3, an upper locating sleeve 4, a first lower locating sleeve 5, a second lower locating sleeve 6, a limiting post 7, a piston block 8 and a spring 9, in which, the bolt head 1 is connected to the top end of the screw rod 2, the upper locating sleeve 4 is sleeved outside the screw rod 2 and is located between the bolt head 1 and a first connecting workpiece 10, the top side of the upper locating sleeve 4 is provided with at least one set of first fixture blocks 12 for limiting in the slots at the bottom side of the bolt head 1, and the bottom side thereof is provided with at least one set of second fixture blocks 13 for limiting in the slots at the top side of the first connecting workpiece, the top side of the first lower locating sleeve 5 is provided with at least one set of third fixture blocks 14 for limiting in the slots of the second connecting workpiece 11, the bottom side of the first lower locating sleeve 5 is provided with at least two sets of piston grooves, and the piston block 8 is arranged in the piston groove, a spring 9 which is downwards pressed against the piston block 8 is also arranged in the piston groove, a limit column 7 which extends out of the piston groove is fixed on the piston block 8, the limit column 7 is connected with the top side of the second lower positioning sleeve 6, the second lower positioning sleeve 6 is sleeved outside the screw rod 2, the screw rod 2 is externally threaded with a nut 3, the top side of the nut 3 is provided with at least one group of positioning grooves, and the bottom side of the second lower positioning sleeve 6 is provided with a positioning block 15 which is matched in the positioning grooves,

example 2

With reference to fig. 1 to 2, in this embodiment, the difference from embodiment 1 is that, in order to ensure that the spring 9 limits the third clamping block 14 in the clamping groove of the second connecting workpiece 11, and the positioning block 15 is limited in the positioning groove, a rubber sleeve 16 located between the first lower positioning sleeve 5 and the second lower positioning sleeve 6 is sleeved outside at least one set of limiting posts 7, and the annular rubber sleeve 16 is provided with a notch, so that after the installation is completed, the rubber sleeve 16 can be pulled open through the notch, and the rubber sleeve 16 is limited between the first lower positioning sleeve 5 and the second lower positioning sleeve 6, thereby further improving the stability effect of the connection.

The utility model discloses a theory of operation is: the upper positioning sleeve 4, the first lower positioning sleeve 5 and the second lower positioning sleeve 6 are sleeved outside the screw rod 2, the bolt head 1 and the first connecting workpiece are limited by the upper positioning sleeve 4, the first lower positioning sleeve 5 and the second lower positioning sleeve 6 are limited between the nut 3 and the second connecting workpiece 11, and the limiting columns 7, the piston blocks 8 and the springs 9 are arranged between the first lower positioning sleeve 5 and the second lower positioning sleeve 6 to limit the screw rod 2 in the circumferential direction and the longitudinal direction, namely, the second lower positioning sleeve 6 can be pushed upwards to enable the nut 3 to be screwed on the screw rod 2, and after the second lower positioning sleeve 6 is loosened, the second lower positioning sleeve 6 can move downwards under the pressure of the spring 9, and the positioning block 15 below the second lower positioning sleeve is correspondingly embedded into the positioning groove, so that the circumferential rotation of the screw rod 2 relative to the workpiece can be avoided, and the circumferential rotation of the nut 3 relative to the screw rod 2 can be avoided, and during installation, the rotary friction between the upper positioning sleeve 4 and the first lower positioning sleeve 5 and the surface of the workpiece cannot occur, so that the damage to the surface of the workpiece is small, when the nut 3 is connected, the screwing distance is small, and the nut 3 is prevented from being easily separated from the screw rod 2 in a rotating mode.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A fastener structure convenient to disassemble is characterized by comprising a bolt head, a screw rod, a nut, an upper positioning sleeve, a first lower positioning sleeve, a second lower positioning sleeve, a limiting column, a piston block and a spring, wherein the bolt head is connected to the top end of the screw rod, the upper positioning sleeve is sleeved outside the screw rod and is positioned between the bolt head and a first connecting workpiece, the top side of the upper positioning sleeve is provided with at least one group of first fixture blocks for limiting in clamping grooves at the bottom side of the bolt head, the bottom side of the upper positioning sleeve is provided with at least one group of second fixture blocks for limiting in clamping grooves at the top side of the first connecting workpiece, the top side of the first lower positioning sleeve is provided with at least one group of third fixture blocks for limiting in clamping grooves of the second connecting workpiece, the bottom side of the first lower positioning sleeve is provided with at least two groups of piston grooves, the piston block is arranged in each piston groove, and the spring for downwards pressing the piston block is further arranged in each piston groove, the piston block is fixedly provided with a limiting column extending out of the piston groove, the limiting column is connected to the top side of the second lower positioning sleeve, the second lower positioning sleeve is sleeved outside the screw rod, the screw rod is in threaded connection with the nut through external threads, the top side of the nut is provided with at least one group of positioning grooves, and the bottom side of the second lower positioning sleeve is provided with a positioning block matched in the positioning grooves.

2. The fastener structure convenient to disassemble and assemble as claimed in claim 1, wherein at least one group of the limiting posts is externally sleeved with a rubber sleeve positioned between the first lower locating sleeve and the second lower locating sleeve, and the annular rubber sleeve is provided with a notch.

3. The fastener structure convenient to disassemble and assemble as claimed in claim 1, wherein the top side of the upper locating sleeve is provided with two sets of first blocks symmetrically distributed about the screw.

4. The fastener structure of claim 1, wherein the bottom side of the upper positioning sleeve is provided with two sets of second locking blocks symmetrically distributed about the screw.

5. The fastener structure convenient to disassemble and assemble as claimed in claim 1, wherein the bottom side of the first lower locating sleeve is provided with two sets of piston grooves symmetrically distributed about the screw.

6. The fastener structure of claim 1, wherein the top side of the nut has two sets of positioning slots symmetrically distributed about the screw.