CN112268048A

CN112268048A - Connecting device

Info

Publication number: CN112268048A
Application number: CN202011075306.5A
Authority: CN
Inventors: 孙江聪; 林俊; 赵晓峰; 汪晶
Original assignee: Luxshare Electronic Technology Kunshan Ltd
Current assignee: Luxshare Electronic Technology Kunshan Ltd
Priority date: 2020-10-09
Filing date: 2020-10-09
Publication date: 2021-01-26
Anticipated expiration: 2040-10-09
Also published as: CN112268048B

Abstract

The invention discloses a connecting device, wherein a rotating shaft is arranged in a rotating cavity of an outer column, first magnetic parts are arranged in a moving channel of the outer column, second magnetic parts are fixedly arranged in a fixing hole of the rotating shaft, the end parts of two adjacent first magnetic parts, which are close to the rotating cavity, are opposite in magnetism, the end parts of two adjacent second magnetic parts, which are close to the inner wall of the rotating cavity, are opposite in magnetism, the connecting device drives the second magnetic parts to rotate by controlling the rotating shaft so that the first magnetic parts and the second magnetic parts are attracted or repelled, and further the first magnetic parts move in the moving channel to realize the quick connection and disconnection of a first connecting assembly and a second connecting assembly. The connecting device is simple in principle, stable in connection, not easy to lose and damage and long in service life.

Description

Connecting device

Technical Field

The invention relates to the technical field of wearable equipment, in particular to a connecting device.

Background

In order to bring convenience to people to carry articles and the safety of the articles in the outgoing process, more and more wearing devices enter the work and life of people. For example, the electronic watch can be fixed on the wrist part through the watchband, so that people can conveniently master time; the bag, the bag and other containers can be fixed on the upper body of the human body through the single or double straps, so that the bag, the bag and other containers are prevented from affecting the movement of limbs; the front cover and the rear cover of the protective housings of the equipment such as a tablet personal computer and a mobile phone can be connected through the connecting belt, so that structural damage caused by equipment collision is avoided.

In the related art, the watchband is generally connected by the connecting pins with elastic two ends, so that the connection and the disassembly are difficult, and the connecting pin parts are easy to lose and damage; quick detach structures such as knapsack area generally insert the stiff end through the pothook and connect, and the pothook produces inward deformation when connecting, inserts back pothook reconversion and interferes with the stiff end and produce the holding power, and the holding power that buckle deformation formed is low can't be applicable to wearing equipment's fixed, and easy fatigue loses elasticity behind the pothook repetitious usage number of times for the block inefficacy is not durable, dismantles slowly and operates inconveniently.

Disclosure of Invention

In view of this, the present invention provides a connecting device, which can rapidly connect and disconnect two connecting components by the attraction or repulsion principle of two magnetic members.

An embodiment of the present invention provides a connection device, where the connection device includes:

the outer column is arranged on the first connecting assembly and is provided with a rotating cavity extending along the axial direction and an even number of moving channels, and all the moving channels are distributed on the side wall of the rotating cavity at equal angles along the circumferential direction;

the rotating shaft is rotatably arranged in the rotating cavity and comprises an even number of fixing holes, all the fixing holes are distributed on the side wall of the rotating shaft at equal angles along the circumferential direction, and the fixing holes correspond to the moving channels one by one;

the even number of first magnetic parts which correspond to the moving channels one to one are respectively movably arranged in the corresponding moving channels, the magnetism of the end parts, close to the rotating cavity, of the two adjacent first magnetic parts is opposite, and each first magnetic part comprises an end part which is far away from the rotating cavity and is used for being buckled in a clamping groove of a second connecting assembly;

and the even number of second magnetic pieces which correspond to the fixing holes one to one are fixedly arranged in the corresponding fixing holes respectively, and the magnetism of the end parts, close to the inner wall of the rotating cavity, of the two adjacent second magnetic pieces is opposite.

Furthermore, the moving channel comprises a first channel and a second channel which are sequentially communicated from outside to inside in the radial direction, and the diameter of the radial section of the first channel is smaller than that of the radial section of the second channel;

the first magnetic piece comprises a first moving part accommodated in the first channel and a second moving part accommodated in the second channel;

the length of the moving channel is greater than or equal to that of the first magnetic part, the length of the first moving part is greater than that of the first channel, the radial section diameter of the first moving part is matched with that of the first channel, and the radial section diameter of the second moving part is matched with that of the second channel.

Further, the rotating shaft includes:

the rotating main body part is positioned in the rotating cavity, and even number of fixing holes are annularly distributed on the side wall of the rotating main body part;

and the connecting part is positioned above the rotating main body part and extends out of the rotating cavity.

Further, the connecting device further comprises:

the knob assembly is positioned above the rotating shaft and comprises a connecting groove and a limiting groove which are communicated along the axial direction;

the stop block is provided with an penetrating hole and fixedly connected with the outer column, the top of the stop block extends into the limiting groove, and the connecting part extends out of the penetrating hole and is connected with the connecting groove of the knob assembly.

Furthermore, the rotating cavity comprises a first cavity and a second cavity which are communicated from top to bottom along the axial direction, the diameter of the radial section of the first cavity is larger than that of the radial section of the second cavity, and all the moving channels are distributed on the side wall of the second cavity.

Further, the stopper includes:

a first stationary portion including the exit aperture, the first stationary portion disposed within the first cavity;

the fan-shaped annular limiting block is positioned above the first fixing part, the limiting block extends out of the first cavity and extends into the limiting groove, and the limiting groove is circular and has an unfilled corner.

Further, the first connecting assembly comprises a fixing through hole;

knob subassembly with the axis of rotation is located the both sides of first coupling assembly respectively, knob subassembly includes shell and third magnetic part, third magnetic part fixed set up in the shell, third magnetic part includes opening decurrent spread groove and spacing groove, the spread groove is located the spacing inslot, the axis of rotation is followed it passes to rotate the chamber stretch out fixed through hole stretches into in the spread groove, the axis of rotation with spread groove interference fit.

Further, the outer column includes:

the moving channels are annularly distributed on the side wall of the outer column main body part;

a fixing portion located above the outer column body portion, the fixing portion having a cross-sectional area smaller than a cross-sectional area of the outer column body portion;

wherein the fixing part is accommodated in the fixing through hole.

Furthermore, the second connecting assembly is provided with a fixed cavity and an even number of clamping grooves, all the clamping grooves are distributed on the side wall of the fixed cavity at equal angles along the circumferential direction, the outer column is contained in the fixed cavity, the even number of clamping grooves are respectively communicated with the even number of moving channels in a one-to-one correspondence manner, and the end part, far away from the rotating cavity, of the first magnetic piece extends into the corresponding clamping groove.

Furthermore, the second connecting assembly further comprises a plurality of fixing grooves opposite to the third magnetic pieces, and the fixing grooves are respectively arranged on the side walls of the fixing cavities;

the connecting device further comprises a plurality of fourth magnetic pieces which are arranged in the corresponding fixing grooves respectively.

The axis of rotation of this embodiment sets up in the rotation intracavity of outer post, and first magnetic part sets up in the removal passageway of outer post, and the fixed setting of second magnetic part is in the fixed orifices of axis of rotation, and adjacent two first magnetic parts are close to the tip magnetism in rotation chamber opposite, and adjacent two second magnetic parts are close to the tip magnetism in the fixed orifices outside is opposite, connecting device drives the second magnetic part through the control axis of rotation and rotates and make first magnetic part and second magnetic part attract mutually or repel mutually, and then makes first magnetic part remove in the removal passageway and realize the high-speed joint and the split of first coupling assembling and second coupling assembling.

Drawings

The above and other objects, features and advantages of the present invention will become more apparent from the following description of the embodiments of the present invention with reference to the accompanying drawings, in which:

FIG. 1 is a cross-sectional view of a rotating shaft and outer cylinder in a locked state according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view of the rotating shaft and outer cylinder in an open state of an embodiment of the present invention;

FIG. 3 is a cross-sectional view of a rotating shaft, an outer post and a first coupling assembly of an embodiment of the present invention;

FIG. 4 is a cross-sectional view of a coupling device according to an embodiment of the present invention;

FIG. 5 is an exploded view of a coupling device according to an embodiment of the present invention;

FIG. 6 is a schematic structural diagram of a knob assembly according to an embodiment of the invention;

FIG. 7 is a schematic structural view of a rotating shaft and a stopper according to an embodiment of the present invention;

FIG. 8 is a schematic structural view of a second linkage assembly of an embodiment of the present invention;

fig. 9 is a cross-sectional view of an outer column of an embodiment of the present invention.

Detailed Description

The present invention will be described below based on examples, but the present invention is not limited to only these examples. In the following detailed description of the present invention, certain specific details are set forth. It will be apparent to one skilled in the art that the present invention may be practiced without these specific details. Well-known methods, procedures, components and circuits have not been described in detail so as not to obscure the present invention.

Further, those of ordinary skill in the art will appreciate that the drawings provided herein are for illustrative purposes and are not necessarily drawn to scale.

Unless the context clearly requires otherwise, throughout the description, the words "comprise", "comprising", and the like are to be construed in an inclusive sense as opposed to an exclusive or exhaustive sense; that is, what is meant is "including, but not limited to".

In the description of the present invention, it is to be understood that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.

Unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are intended to be inclusive and mean that, for example, they may be fixedly connected or detachably connected or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Fig. 1 to 9 are schematic structural views of the connecting device of the present embodiment. As shown in fig. 1 to 9, the coupling device includes an outer cylinder 1, a rotation shaft 2, a first magnetic member 3, and a second magnetic member 4. The outer column 1 comprises a rotation chamber 11 and an even number of movement channels 12, as shown in fig. 9. Wherein the rotation chamber 11 is formed by the top of the outer column 1 being recessed in the direction of the bottom, i.e. extending in the axial direction of the outer column 1. All the moving channels 12 are respectively arranged on the side wall of the rotating cavity 11 along the circumferential direction of the rotating cavity 11 at equal angles, as shown in fig. 9. That is, all the moving channels 12 are the same in height. Preferably, in the present embodiment, all the moving channels 12 are provided as through holes, so that the moving channels 12 communicate with the rotating cavity 11, so as to install the first magnetic member 3 in the moving channels 12.

In a preferred embodiment, the axis of the rotation chamber 1 coincides with the axis of the outer column 1, so that the lengths of all the moving channels 12 are identical, thereby making it possible to make the structures of all the first magnetic members 3 located in all the moving channels 12 identical. Therefore, the number of parts and the number of the die sinking of the parts can be reduced, and the production cost is reduced.

In the present embodiment, the number of the first magnetic members 3 is the same as the number of the moving channels 12. The first magnetic members 3 are respectively disposed in the corresponding moving channels 12, and can be controlled to move in the corresponding moving channels 12, as shown in fig. 1 and 2. The length of the moving channel 12 is greater than or equal to the length of the first magnetic member 3, so that the first magnetic member 3 can be completely moved into the moving channel 12, as shown in fig. 2.

Specifically, the moving channel 12 includes a first channel 121 and a second channel 122 which are sequentially communicated from outside to inside in the radial direction, as shown in fig. 9. The radial cross-sectional diameter of the first passage 121 is smaller than that of the second passage 122, and a step is formed at the connection position of the two. The first magnetic member 3 includes a first moving portion 31 and a second moving portion 32, as shown in fig. 5. Wherein the diameter of the first moving part 31 is adapted to the diameter of the first channel 121, so that the first moving part 31 can be accommodated in the first channel 121 and move in the first channel 121 and the second channel 122. The diameter of the second moving part 32 is adapted to the diameter of the second channel 122 so that the second moving part 32 can be received in the second channel 122 and move within the second channel 122.

Preferably, the length of the first moving part 31 is greater than the length of the first channel 121, and when the first magnetic member 3 is controlled to move, the radially outer end of the first moving part 31 may protrude from the outer side of the first channel 121, as shown in fig. 1. The shape of the radially outer end surface of the second moving portion 32 is the same as the shape of the radially outer end surface of the second channel 122, and when the first magnetic member 3 moves to the inner side of the moving channel 12, the radially inner end surface of the second moving portion 32 and the side wall of the rotating cavity 11 form a smooth cylindrical side surface, so that the rotating shaft 2 rotates in the rotating cavity 11.

In a preferred embodiment, the first magnetic member 3 may also be formed by combining a pin with a magnet. Specifically, the magnet is disposed on the side of the pin shaft close to the rotating cavity 11.

The rotating shaft 2 is rotatably disposed in the rotating chamber 11, as shown in fig. 1 to 4. In a preferred embodiment, the outer diameter of the rotating shaft 2 is adapted to the diameter of the rotating cavity 11, so as to avoid the rotating shaft 2 from shaking when rotating in the rotating cavity 11, thereby improving the stability of the rotation of the rotating shaft 2.

Further, the rotating shaft 2 includes an even number of fixing holes 21, and all the fixing holes 21 are disposed on the outer side wall of the rotating shaft 2 at equal angular distribution in the circumferential direction of the rotating shaft 2, as shown in fig. 5 and 7. In this embodiment, the number of the fixing holes 21 is the same as that of the moving channels 12, and the height of the fixing holes 21 is the same as that of the moving channels 12, so that the fixing holes 21 and the moving channels 12 can be in one-to-one correspondence. That is, the included angle between any two adjacent fixing holes 21 is the same as the included angle between any two moving channels 12. When the rotating shaft 2 rotates by a predetermined angle, the fixing holes 21 and the moving channels 12 can be communicated in a one-to-one correspondence. The predetermined angle is the same as the angle between two adjacent fixing holes 21.

In the present embodiment, the number of the second magnetic members 4 is the same as the number of the fixing holes 21. All the second magnetic members 4 are fixedly disposed in the corresponding fixing holes 21, as shown in fig. 1 and 2. Preferably, the shape of the second magnetic member 4 is the same as the shape of the fixing hole 21, and when the second magnetic member 4 is fixed in the fixing hole 21, the radially outer end surface of the second magnetic member 4 and the radially outer side surface of the rotating shaft 2 form a smooth cylindrical side surface, so that the rotating shaft 2 can rotate in the rotating cavity 11.

In the present embodiment, the ends of the two adjacent first magnetic members 3 close to the rotating cavity 11 in the radial direction are opposite in magnetism (i.e. the ends of the second moving parts 32 of the two adjacent first magnetic members 3 close to the rotating cavity 11 in the radial direction are opposite in magnetism), and the ends of the two adjacent second magnetic members 4 close to the inner side wall of the rotating cavity 11 in the radial direction are opposite in magnetism. In the locked state, the magnetic properties of each second magnetic member 4 are the same as those of the second moving member 32 facing thereto, and according to the principle that like poles of magnets repel each other, the first magnetic member 3 moves in the moving passage 12 in the radial direction away from the rotating chamber 11, and the second moving portion 32 stops moving by abutting against the step, and at this time, the radially outer end of the partial first moving portion 31 protrudes from the moving passage 12, as shown in fig. 1 and 4.

When the rotating shaft 2 rotates by a predetermined angle to enter the open state, the magnetism of the radial outer end of each second magnetic member 4 is opposite to the magnetism of the radial inner end of the corresponding second moving member 32, according to the principle that the heteropolar magnetism of the magnet attracts, the first magnetic member 3 moves inwards in the moving channel 12 along the radial direction until the first magnetic member 3 is attracted together with the second magnetic member 4, and at this time, the first magnetic member 3 is completely positioned in the moving channel 12, as shown in fig. 2 and 3.

In a preferred embodiment, the diameter of the fixing hole 21 may be greater than or equal to the diameter of the second passage 122, so that the diameter of the second magnetic member 4 is greater than or equal to the diameter of the second moving part 32, thereby increasing the magnetic force to which the second moving part 32 is subjected.

The outer column 1 includes an outer column body portion 13 and a fixing portion 14, as shown in fig. 1, 2 and 9. The fixing portion 14 is located above the outer column body 13 in the axial direction, the cross-sectional area of the fixing portion 14 is smaller than that of the outer column body 13, and all the moving channels 12 are annularly distributed on the sidewall of the outer column body 13, as shown in fig. 9.

Further, the connecting device also comprises a first connecting assembly 7 and a second connecting assembly 8, as shown in fig. 3 and 4. Wherein, the first connecting component 7 comprises a fixing through hole 71, the cross section shape of the fixing through hole 71 is matched with the cross section shape of the fixing part 14, and the thickness is the same, as shown in fig. 3. The fixing portion 14 is inserted into the fixing through hole 71 such that the first connection member 7 is disposed circumferentially outside the fixing portion 14. In a preferred embodiment, the fixing portion 14 and the fixing through hole 71 are configured with non-circular cross-sections, so that the first connection assembly 7 is prevented from rotating, and the stability of the connection of the first connection assembly 7 is improved. The thickness of the fixing portion 14 is the same as that of the first connection member 7, so that the stability of connection of the first connection member 7 can be further improved.

The second connecting member 8 has a fixing cavity 81 and an even number of catching grooves 82, as shown in fig. 5 and 8. The number of the card slots 82 is the same as the number of the moving channels 12. All the locking grooves 82 are arranged on the side wall of the fixing cavity 81 along the circumferential direction at equal angles. When the outer column 1 is accommodated in the fixed cavity 81, all the clamping grooves 82 are respectively communicated with the moving channels 12 in a one-to-one correspondence manner.

When the rotating shaft 2 is in the locked state, a part of the first moving portion 31 of the first magnetic member 3 protrudes from the moving channel 12 and into the corresponding catching groove 82, thereby connecting the outer column 1 and the second coupling assembly 8 together. When the rotating shaft 2 is rotated by a predetermined angle, the rotating shaft 2 is converted from the locked state to the open state, and the first magnetic member 3 is extended from the catching groove 82 and retracted into the moving channel 12, thereby separating the outer column 1 from the second coupling assembly 8.

In the present embodiment, the height of the outer column body 13 is the same as the thickness of the fixing cavity 81, and the diameter of the outer column body 13 is adapted to the diameter of the fixing cavity 81, so that the outer column body 13 can be completely accommodated in the fixing cavity 81. Therefore, the first connecting assembly 7 can be positioned above the second connecting assembly 8, the first connecting assembly 7 and the second connecting assembly 8 can be completely attached, and the connecting stability of the first connecting assembly 7 and the second connecting assembly 8 is improved.

Further, the second connecting assembly 8 includes a first connecting member 84, a sleeve 85, and a flap 86, as shown in fig. 5 and 8. The first connecting member 84 includes a receiving cavity 87, a plurality of extending grooves 88 and a plurality of fixing grooves 83, wherein the plurality of extending grooves 88 and the plurality of fixing grooves 83 are respectively located on the side walls of the receiving cavity 87, as shown in fig. 5. The sleeve 85 includes the even number of the locking slots 82, and all the locking slots 82 are distributed on the side wall of the sleeve 85, as shown in fig. 5.

The sleeve 85 is fixedly arranged in the accommodating cavity 87, and the clamping groove 82 is respectively communicated with the extending groove 88 and used for providing an accommodating space for the end part extending out of the first magnetic part 3, so that the connection stability of the outer column 1 and the second connecting component 8 is further improved. Further, the outer sidewall of the sleeve 85 is used to form the inner sidewall of the fixing groove 83, so as to prevent the fourth magnetic member 9 disposed inside from falling into the fixing cavity 81 to affect the connection of the outer column 1 therewith, as shown in fig. 8. The flap 86 is provided in an annular configuration, the inner ring diameter of the flap 86 fitting the diameter of the sleeve 85. The blocking piece 86 is fixedly disposed above the sleeve 85 and the fixing groove 83 to close the top of the fixing groove 83, so that the fourth magnetic member 9 is prevented from being separated from the fixing groove 83. The fourth magnetic element 9 is disposed in the second connecting assembly 8 in an insert shielding manner, so that the appearance of the connecting device is neat and beautiful.

In a preferred embodiment, the fourth magnetic member 9 is adapted to the shape of the fixing groove 83, and the fourth magnetic member 9 and the fixing groove 83 may be respectively provided in corresponding fan-shaped ring shapes. The upper surface of the blocking piece 86 is coplanar with the upper surface of the first connecting member 84, which improves the smoothness of the connection between the first connecting member 7 and the second connecting member 8, as shown in fig. 4. Besides, the fourth magnetic member 9 and the fixing groove 83 may be formed in a crescent shape, a rectangle shape, or the like.

In this embodiment, the first connecting member 84 and the first connecting member 7 may be connecting portions of any devices. For example, the wearable device can be a connecting belt of a schoolbag, a watchband of a watch and the like. Preferably, the first connection member 84 and the first connection member 7 are made of hard materials. When the first connecting component 7 is a soft connecting band, the first connecting component 7 can be formed by fixedly connecting the upper and lower sides of the periphery of the fixing through hole 71 with the connecting band through two hard connecting pieces, so that the connecting stability of the first connecting component 7 is improved.

Further, the rotating cavity 11 includes a first cavity 111 and a second cavity 112 which are communicated from top to bottom along the axial direction, the radial section diameter of the first cavity 111 is larger than that of the second cavity 112, and all the moving channels 12 are distributed on the side wall of the second cavity 112, as shown in fig. 9.

The rotating shaft 2 includes a rotating main body portion 22 and a connecting portion 23, and the connecting portion 23 is located above the rotating main body portion 22, as shown in fig. 5. The thickness of the rotating main body 22 is the same as the thickness of the second cavity 112, the rotating main body 22 is accommodated in the second cavity 112, and all the fixing holes 21 are annularly and uniformly distributed on the sidewall of the rotating main body 22, as shown in fig. 1 and 2.

The connecting portion 23 includes a first connecting portion 231 and a second connecting portion 232, and the second connecting portion 232 is located axially above the first connecting portion 231, as shown in fig. 1. The diameter of the first connecting portion 231 is smaller than that of the rotating body 22, and the two portions are coaxially disposed. The thickness of the first connection portion 231 is greater than that of the first cavity 111, and portions of the first connection portion 231 and the second connection portion 232 protrude from above the first cavity 111, as shown in fig. 3. The second connecting portion 232 is used to fixedly connect with the knob assembly 5 so as to facilitate the user to operate the rotation shaft 2.

The connection device further comprises a knob assembly 5 and a stopper 6, as shown in fig. 1-5. Wherein the stopper 6 has an exit hole 61, the stopper 6 is disposed between the knob assembly 5 and the first cavity 111, as shown in fig. 3. Specifically, the outer diameter of the stopper 6 is the same as the diameter of the first cavity 111, and the stopper 6 is fixedly connected to the first cavity 111. The diameter of the through hole 61 is matched with the diameter of the first connecting portion 231, and the first connecting portion 231 and the second connecting portion 232 penetrate through the through hole 61 to be fixedly connected with the knob assembly 5. The first connection portion 231 may rotate in the penetration hole 61.

Further, the outer diameter of the rotating body 22 is larger than the diameter of the through hole 61 and smaller than the outer diameter of the stopper 6, so that when the stopper 6 is fixedly disposed in the first cavity 111, the rotating shaft 2 can be prevented from moving out from the upper side of the rotating cavity 11 and being separated from the outer column 1.

The stopper 6 includes a first fixing portion 62 and a fan-shaped annular stopper 63, as shown in fig. 5. The first fixing portion 62 includes an exit hole 61, the shape of the first fixing portion 62 is adapted to the shape of the first cavity 111, and the first fixing portion 62 is disposed in the first cavity 111, as shown in fig. 3. In a preferred embodiment, the first fixing portions 62 have the same shape as the first cavity 111, and may be non-circular, and when the first fixing portions 62 are fixed in the first cavity 111, the stopper 6 can be prevented from rotating relative to the outer column 1, which may affect the use of the connecting device.

The knob assembly 5 includes a connecting groove 51 and a stopper groove 52 that communicate in the axial direction, as shown in fig. 6. Wherein, the area of the limiting groove 52 is larger than that of the connecting groove 51, and the opening faces the rotating shaft 2. Specifically, the knob assembly 5 is located above the first coupling assembly 7, and a portion of the first coupling portion 231 and the second coupling portion 232 is extended out of the through hole 61 and then located in the limiting groove 52 and the coupling groove 51, respectively, thereby coupling the knob assembly 5 to the rotating shaft 2.

The shape and thickness of the connecting groove 51 are matched with those of the second connecting portion 232, and the second connecting portion 232 is fixedly arranged on the connecting groove 51 to fixedly connect the knob assembly 5 and the rotating shaft 2. To prevent the knob assembly 5 from rotating relative to the second connection portion 232, the second connection portion 232 and the connection slot 51 may be configured to have a non-circular configuration, as shown in fig. 5 and 6.

Specifically, the fan-shaped annular stop block 63 is located above the first fixing portion 62 and radially outside the through hole 61. The limiting groove 52 is a circle with a unfilled corner, and the outer diameter of the limiting groove 52 is larger than that of the fan-shaped annular limiting block 63. The fan-shaped annular limiting block 63 extends out of the first cavity 111 and extends into the limiting groove 52, and the fan-shaped annular limiting block 63 can rotate in the limiting groove 52, as shown in fig. 3. When the knob assembly 5 is rotated by a user operation so that both side edges of the sector annular limiting groove 52 abut against both side edges of the limiting block 63, the knob assembly 5 and the rotating shaft 2 are rotated clockwise and counterclockwise by a predetermined angle, that is, the connecting device is in a locked state and an open state.

The cooperation of the sector-shaped stopper 63 and the stopper groove 52 may facilitate the connection and separation of the outer column 1 and the second coupling assembly 8 by the user operating the knob assembly 5 to rotate the rotation shaft 2 clockwise or counterclockwise by a predetermined angle. That is, when the user operates the knob assembly 5 to rotate clockwise or counterclockwise to be stationary, i.e., to rotate by a predetermined angle.

In a preferred embodiment, the number of the moving passage 12, the fixing hole 21, the first magnetic member 3 and the second magnetic member 4 is two. The two moving channels 12 and the two fixing holes 21 are symmetrically arranged at 180 degrees. The switching between the two states can be realized by rotating the rotating shaft 2 clockwise or anticlockwise by 180 degrees. The included angle formed by the two circumferential sides of the limiting groove 52 is 270 degrees, and the included angle formed by the two circumferential sides of the fan-shaped limiting block 63 is 90 degrees. When the side of the fan-shaped annular limiting block 63 abuts against the side of the limiting groove 52, the knob assembly 5 drives the rotating shaft 2 to rotate 180 degrees, and the switching between the two states is completed.

In this embodiment, the knob assembly 5 includes a housing 53 and a third magnetic member 54, the third magnetic member 54 is fixedly disposed in the housing 53, the third magnetic member 54 includes a connection groove 51 and a limiting groove 52, the connection groove 51 is located in the limiting groove 52, as shown in fig. 5 and 6. The third magnetic member 54 and the fourth magnetic member 9 are disposed opposite to each other, and the polarities of the first magnetic member and the second magnetic member are opposite to each other, so that the stability of the connection between the first connection assembly 7 and the second connection assembly 8 can be further improved according to the principle that the magnets attract each other. The third magnetic member 54 and the fourth magnetic member 9 also have a guiding function for guiding the connection of the first connecting assembly 7 and the second connecting assembly 8. The outer case 53 is wrapped around the outside of the third magnetic member 54, which improves the appearance of the connecting device.

The cross-sectional area of the knob assembly 5 is larger than that of the fixing through-hole 71 of the first coupling assembly 7. Knob subassembly 5 is located the top and the 2 fixed connection of axis of rotation of outer post 1, axis of rotation 2 is spacing in outer post 1's rotation chamber 11 through dog 6, the outside at fixed part 14 is established to first connecting element 7 cover, first connecting element 7 is spacing between knob subassembly 5 and outer post main part 13 of outer post 1, thereby make first connecting element 7, outer post 1, axis of rotation 2, knob subassembly 5, dog 6, first magnetic part 3 and second magnetic part 4 can connect as an organic wholely. When the connecting device is in the open state, the first magnetic member 3 retracts from the locking groove 82 of the second connecting assembly 8 into the moving channel 12, and at this time, the whole structure formed by the first connecting assembly 7, the outer column 1, the rotating shaft 2, the knob assembly 5, the stopper 6, the first magnetic member 3 and the second magnetic member 4 can be removed from the fixing cavity 81 of the second connecting assembly 8, so that the first connecting assembly 7 and the second connecting assembly 8 can be disassembled.

In a preferred embodiment, the radially outer upper end surface of the first moving part 31 may be further provided with a flat surface for increasing the connection strength of the first moving part 31 inserted into the locking groove 82 of the second connecting assembly 8, and preventing the first moving part 31 from retracting from the locking groove 82 into the outer column 1 to forcibly release the first connecting assembly 7 and the second connecting assembly 8 when forcibly detached.

In this embodiment, the first magnetic member 3, the second magnetic member 4, the third magnetic member 54, and the fourth magnetic member 9 may be magnets. Besides, the first magnetic member 3, the second magnetic member 4, the third magnetic member 54, and the fourth magnetic member 9 may be made of any ferromagnetic material.

The connecting device of this embodiment controls the attraction and repulsion between the first magnetic member 3 and the second magnetic member 4 by rotating the knob assembly 5 to adjust the rotation angle of the rotation shaft 2, thereby controlling the operation of the first magnetic member 3, and enabling the first connecting assembly 7 and the second connecting assembly 8 to carry out rapid assembling and disassembling.

Connecting device still including set up in rotate the elastic component in the chamber 11, the elastic component is preferred the spring, also can be for other elastic construction, the one end of elastic component with the bottom surface fixed connection who rotates chamber 11, the other end of elastic component with axis of rotation 2 fixed connection to axis of rotation 2 is after rotatory certain angle, the elastic component can make 2 counter-rotations of pivot are until recovering to initial condition, being provided with of elastic component does benefit to the reseing of pivot 2.

The connecting device's of this embodiment axis of rotation sets up in the rotation intracavity of outer post, and first magnetic part sets up in the removal passageway of outer post, and the fixed setting of second magnetic part is in the fixed orifices of axis of rotation, and adjacent two first magnetic parts are close to the tip magnetism in rotation chamber opposite, and adjacent two second magnetic parts are close to the tip magnetism in the fixed orifices outside is opposite, connecting device drives the second magnetic part through the control axis of rotation and rotates and make first magnetic part and second magnetic part attract each other or repel each other, and then makes first magnetic part remove in the removal passageway and realize the high-speed joint and the split of first coupling assembling and second coupling assembling. The connecting device is simple in principle, stable in connection, not easy to lose and damage and long in service life.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. 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 connection device, characterized in that it comprises:

the outer column (1) is arranged on the first connecting component (7) and is provided with a rotating cavity (11) extending along the axial direction and an even number of moving channels (12), and all the moving channels (12) are distributed on the side wall of the rotating cavity (11) along the circumferential direction at equal angles;

the rotating shaft (2) is rotatably arranged in the rotating cavity (11), the rotating shaft (2) comprises an even number of fixing holes (21), all the fixing holes (21) are distributed on the side wall of the rotating shaft (2) at equal angles along the circumferential direction, and the fixing holes (21) correspond to the moving channels (12) one by one;

the even number of first magnetic parts (3) which correspond to the moving channels (12) one by one are respectively movably arranged in the corresponding moving channels (12), the magnetism of the end parts, close to the rotating cavity (11), of the two adjacent first magnetic parts (3) is opposite, and each first magnetic part (3) comprises an end part which is far away from the rotating cavity (11) and is used for being buckled in a clamping groove (82) of a second connecting assembly (8);

the even number of second magnetic pieces (4) which correspond to the fixing holes (21) one by one are fixedly arranged in the corresponding fixing holes (21), and the magnetism of the end parts, close to the inner wall of the rotating cavity (11), of the two adjacent second magnetic pieces (4) is opposite.

2. The connection device according to claim 1, characterized in that the moving channel (12) comprises a first channel (121) and a second channel (122) communicating in turn from the outside to the inside in a radial direction, the first channel (121) having a radial section diameter smaller than the radial section diameter of the second channel (122);

the first magnetic member (3) comprises a first moving part (31) housed in the first channel (121) and a second moving part (32) housed in the second channel (122);

the length of the moving channel (12) is greater than or equal to that of the first magnetic part (3), the length of the first moving part (31) is greater than that of the first channel (121), the radial section diameter of the first moving part (31) is matched with that of the first channel (121), and the radial section diameter of the second moving part (32) is matched with that of the second channel (122).

3. The connecting device according to claim 2, characterized in that the rotating shaft (2) comprises:

the rotating main body part (22) is positioned in the rotating cavity (11), and even number of fixing holes (21) are annularly distributed on the side wall of the rotating main body part (22);

a connecting portion (23) located above the rotating main body portion (22), the connecting portion (23) extending from the rotating chamber (11).

4. The connecting device of claim 3, further comprising:

the knob assembly (5) is positioned above the rotating shaft (2), and the knob assembly (5) comprises a connecting groove (51) and a limiting groove (52) which are communicated along the axial direction;

the stop block (6) is provided with an outlet hole (61), the stop block (6) is fixedly connected with the outer column (1), the top of the stop block (6) extends into the limiting groove (52), and the connecting portion (23) extends out of the outlet hole (61) and is connected with the connecting groove (51) of the knob component (5).

5. The connecting device according to claim 4, characterized in that the rotating cavity (11) comprises a first cavity (111) and a second cavity (112) which are communicated from top to bottom along the axial direction, the radial section diameter of the first cavity (111) is larger than that of the second cavity (112), and all the moving channels (12) are distributed on the side wall of the second cavity (112).

6. The connection device according to claim 5, characterized in that the stop (6) comprises:

a first fixing portion (62) comprising the exit hole (61), the first fixing portion (62) being disposed within the first cavity (111);

the fan-shaped annular limiting block (63) is located above the first fixing portion (62), the limiting block (63) extends out of the first cavity (111) and extends into the limiting groove (52), and the limiting groove (52) is circular with unfilled corners.

7. The connection device according to claim 6, characterized in that the first connection assembly (7) comprises a fixing through hole (71);

knob subassembly (5) with axis of rotation (2) are located the both sides of first coupling assembly (7) respectively, knob subassembly (5) are including shell (53) and third magnetic part (54), third magnetic part (54) fixed set up in shell (53), third magnetic part (54) are including opening decurrent spread groove (51) and spacing groove (52), spread groove (51) are located in spacing groove (52), axis of rotation (2) are followed it passes to stretch out to rotate chamber (11) fixed through hole (71) and stretch into in spread groove (51), axis of rotation (2) with spread groove (51) interference fit.

8. The connection device according to claim 7, characterized in that the outer column (1) comprises:

the moving channels (12) are annularly distributed on the side wall of the outer column main body part (13);

a fixing portion (14), the fixing portion (14) being located above the outer column main body portion (13), a cross-sectional area of the fixing portion (14) being smaller than a cross-sectional area of the outer column main body portion (13);

wherein the fixing part (14) is accommodated in the fixing through hole (71).

9. The connecting device according to claim 8, wherein the second connecting assembly (8) has a fixed cavity (81) and an even number of slots (82), all the slots (82) are distributed on the side wall of the fixed cavity (81) along the circumferential direction at equal angles, the outer column (1) is accommodated in the fixed cavity (81), the even number of slots (82) are respectively communicated with the even number of moving channels (12) in a one-to-one correspondence manner, and the end of the first magnetic member (3) far away from the rotating cavity (11) extends into the corresponding slot (82).

10. The connecting device according to claim 9, characterized in that said second connecting assembly (8) further comprises a plurality of fixing slots (83) opposite to said third magnetic elements (54), respectively provided on the side walls of said fixing cavities (81);

the connecting device further comprises a plurality of fourth magnetic pieces (9) which are respectively arranged in the corresponding fixing grooves (83).