CN218947359U - Magnetic switch - Google Patents

Abstract

The utility model discloses a magnetic switch, which comprises a shell, a cover plate arranged on the shell, and a knob arranged on the cover plate, wherein a guide shaft and a permanent magnet sleeved outside the guide shaft are arranged in the shell, a rotating shaft is fixedly connected to the knob, the rotating shaft is in transmission connection with a rotating rod, the rotating rod is inserted into the permanent magnet to drive the permanent magnet to rotate together in the process of rotating the knob, a connecting sleeve which vertically moves along the guide shaft after rotating around the guide shaft is movably sleeved on the guide shaft, and the connecting sleeve is integrally connected with the permanent magnet to enable the permanent magnet to vertically move along the guide shaft together in the process of rotating the knob.

Description

Magnetic switch

Technical Field

The utility model belongs to the technical field of magnetic devices, and particularly relates to a magnetic switch.

Background

The magnetic switch is equipment for adsorbing respective magnetic conductive workpieces by utilizing magnetic force, so that the workpieces are positioned and ground. An electromagnet is arranged in the center of the interior of the traditional magnetic switch, and the existence of the magnetic force of the electromagnet is realized by controlling the electrifying condition of the electromagnet, so that a workpiece is adsorbed or put down.

However, this kind of inside magnetic switch that is equipped with electro-magnet needs to insert the power, easily causes the potential safety hazard because of the operation is improper, in order to solve this problem, has disclosed a detachable magnetic switch in the patent document of publication No. CN210757175U, including casing, apron and knob, the bull stick is connected to the center of apron in the pivot of knob, from bottom to top has set gradually in the casing has the first magnet and the second magnet of north-south magnetism two-stage, first magnet is fixed in the casing, the bull stick is the U type and the two-stage of inserting the second magnet respectively downwards at the both ends of bull stick, drives the second magnet through the knob and rotates in the casing, can realize that magnetic switch adsorbs or put down the work piece, and this magnetic switch need not to use the power, more safe and reliable.

However, the magnetic switch has the following problems: the magnetic switch weakens the magnetism of the magnetic switch by enabling the north-south magnetism of the second magnet to rotate to the same position as that of the north-south magnetism of the first magnet, so that the purpose of putting down the workpiece is achieved, but in the actual use process, even if the first magnet is subjected to the action of the magnetic repulsive force of the second magnet, the magnetic field strength below the first magnet is still higher, and the workpiece still can be adsorbed on the magnetic switch, especially some lighter workpieces.

Disclosure of Invention

Aiming at the problem that the prior magnetic switch is not easy to put down the absorbed workpiece, the following utility model is provided:

the utility model provides a magnetic switch, includes the casing, installs the apron on the casing, locates the knob on the apron, be equipped with guiding axle and cover in the casing and establish the permanent magnet outside the guiding axle, fixedly connected with pivot on the knob, the pivot transmission is connected with the bull stick, the bull stick inserts in the permanent magnet in order to drive the permanent magnet and take place the rotation together in the knob process of rotating, the epaxial movable sleeve of guiding is followed the connecting sleeve of guiding axle vertical movement after rotatory around the guiding axle, connecting sleeve and permanent magnet become integrated connection in order to let the permanent magnet follow guiding axle vertical movement at the knob in-process of rotating, the permanent magnet descends along the guiding axle after, and the permanent magnet is close to the casing, and magnetic switch adsorbs the work piece can be adsorbed to the reinforcing, and on the contrary, is isolated by the air between permanent magnet and the casing after the permanent magnet descends along the guiding axle, and magnetic switch adsorbs the work piece ability is weakened greatly, can put down the work piece.

Preferably, the bottom of the permanent magnet is fixedly connected with a lifting plate, the lifting plate is movably connected with the inner side of the shell in a fitting manner so as to lift together with the permanent magnet in the rotating process of the permanent magnet, and the lifting plate is contacted with the shell, so that the stability of the lifting process of the permanent magnet is increased.

Preferably, the bull stick is the shape of falling U, in the permanent magnet was inserted at the both ends of bull stick, the pivot bottom is equipped with the draw-in groove with bull stick top matched with, twists reverse the knob back, and the draw-in groove takes place the rotation of bull stick.

Preferably, the cover plate is provided with a limit groove, the top of the limit groove is higher than the top of the rotating rod, and the rotating rod cannot prop against the cover plate in the process that the rotating rod rises along with the permanent magnet.

Preferably, the guide shaft is a screw rod extending upward from the center of the inside of the housing, and the connecting sleeve is a threaded sleeve matched with the screw rod.

Preferably, the inner side surface of the shell is provided with an inner thread, and the outer side surface of the rising plate is provided with an outer thread matched with the inner thread of the shell.

Preferably, the cover plate is provided with a positioning groove matched with the shell, and the cover plate is connected with the shell through a screw.

Preferably, the permanent magnet is made of a strong magnetic material, and the magnetic switch can absorb workpieces with larger weight.

Advantageous effects

The utility model improves the internal structure of the original magnetic switch, a guide shaft is arranged in a shell, a connecting sleeve which can rise after rotating along the guide shaft is sleeved outside the guide shaft, the connecting sleeve is integrally connected with a permanent magnet, the permanent magnet is driven to rotate together and vertically move along the guide shaft by rotating a knob on the magnetic switch, when the magnetic switch needs to adsorb a workpiece, the knob is controlled to enable the permanent magnet to be close to the bottom of the shell as much as possible, when the workpiece needs to be put down, the knob is rotated to enable the permanent magnet to be isolated from the bottom of the shell, air is filled between the permanent magnet and the shell, the magnetic field intensity transmitted to the bottom of the shell by the permanent magnet is greatly weakened, and the problem that the workpiece is difficult to put down by the conventional magnetic switch is solved.

Drawings

FIG. 1 is a schematic diagram of an exploded structure of a magnetic switch according to the present utility model;

FIG. 2 is a schematic perspective view of a magnetic switch according to the present utility model;

FIG. 3 is a schematic diagram of the internal structure of the magnetic switch according to the present utility model;

fig. 4 is a schematic view of the internal structure of the cover plate in the present utility model.

The correspondence between the reference numerals and the component names in the drawings is as follows:

1. a housing; 2. a cover plate; 3. a knob; 4. a rotating shaft; 5. a rotating rod; 6. a screw; 11. a permanent magnet; 12. a connecting sleeve; 13. a guide shaft; 14. a rising plate; 21. a positioning groove; 22. a limit groove; 41. a clamping groove.

Detailed Description

The technical scheme of the present utility model will be clearly and completely described in the following examples.

It will be apparent that the described embodiments are some, but not all, of the embodiments of the present application. All other embodiments, based on the embodiments herein, which would be apparent to one of ordinary skill in the art without undue burden are within the scope of the present application.

As shown in fig. 1-4, in this embodiment, a magnetic switch is disclosed, including a housing 1, a cover plate 2, and a knob 3, the inner cavity of the housing 1 is cylindrical, the cover plate 2 is installed at the opening of the cylindrical inner cavity, the knob 3 is rotatably installed on the cover plate 2 and can rotate relative to the cover plate 2, a guide shaft 13 extending upward from the bottom of the housing 1 and a permanent magnet 11 sleeved on the guide shaft 13 are provided in the bottom of the cylindrical recess, the guide shaft 13 is movably sleeved with a connecting sleeve 12 capable of rotating relative to the guide shaft 13, the connecting sleeve 12 rotates on the guide shaft 13 and then moves vertically along the guide shaft 13, a rotating shaft 4 capable of rotating together with the knob 3 is fixedly connected to the knob 3, the rotating shaft 4 is in transmission connection with a rotating rod 5, the rotating rod 5 is connected into the permanent magnet 11 in an insertion manner so as to drive the permanent magnet 11 to rotate through the rotation, the permanent magnet 11 rotates together with the rotating rod 5, and the connecting sleeve 12 is fixedly inserted into the permanent magnet 11, i.e. the connecting sleeve 12 is connected with the permanent magnet 11 and then moves integrally along the guide shaft 13, and simultaneously moves along the guide shaft 13.

When the workpiece is required to be adsorbed, the permanent magnet 11 is positioned close to the bottom of the shell 1, at the moment, the magnetic force at the bottom of the shell 1 is large, so that the workpiece is convenient to adsorb, when the workpiece is required to be put down, the rotary knob 3 is rotated to enable the permanent magnet 11 to ascend, after the permanent magnet 11 ascends, the bottom of the permanent magnet is separated from the shell 1 through air, the magnetic force of the permanent magnet 11 is greatly weakened, and the permanent magnet 11 cannot maintain the adsorption of the workpiece, so that the workpiece is put down.

Further, the bottom of the permanent magnet 11 is fixedly connected with a lifting plate 14, the lifting plate 14 is movably connected with the inner side of the housing 1 in a fitting manner, that is, the lifting plate 14, the permanent magnet 11 and the connecting sleeve 12 are integrally connected, in the rotating process of the permanent magnet 11, the lifting plate 14 contacts with the housing 1 and lifts together with the permanent magnet 11, and because the lifting plate 14 contacts with the housing 1, the permanent magnet 11 and the housing 1 are not completely separated from each other, and the stability of the permanent magnet 11 in the lifting process is improved.

Specifically, according to different manufacturing materials of the lifting plate 14, different purposes can be achieved, the lifting plate 14 is made of good magnetic conductive materials such as pure iron, and the capability of the magnetic switch for adsorbing workpieces can be improved; when the magnetic force performance of the permanent magnet 11 is too large, the lifting plate 14 is made of materials with magnetism isolating performance such as rubber, so that the adsorption capacity of the permanent magnet 11 after lifting can be further weakened, and the workpiece can be put down more conveniently.

Further, the bull stick 5 is the shape of falling U, the bottom both ends of bull stick 5 insert downwards in permanent magnet 11, the pivot 4 bottom be equipped with bull stick 5 top matched with sharp draw-in groove 41, when turning round knob 3, drive bull stick 5 rotation through draw-in groove 41 on the pivot 4, it is comparatively laborsaving.

Further, a semicircular limit groove 22 is formed in the cover plate 2, the height of the top surface of the rotating rod 5 is just set between the top of the limit groove 22 and the opening, the rotating rod 5 rises together with the permanent magnet 11 in the rotating process of the permanent magnet 11, at this time, the limit groove 22 limits the rotating range of the permanent magnet 11 to be within 0-180 degrees, and meanwhile, in the rotating process of the permanent magnet 11, the rotating rod 5 cannot prop against the cover plate 2, so that the knob 3 cannot rotate.

The guide shaft 13 is a screw rod extending vertically upwards from the center of the inside of the casing 1, the connecting sleeve 12 is a threaded sleeve matched with the screw rod, so that the threaded sleeve can vertically move on the screw rod, further, according to actual needs, different thread intervals can be set, and the permanent magnet 11 vertically moves for different distances on the premise of unchanged rotating the angle of the knob 3.

Specifically, an internal thread is provided on the inner side surface of the housing 1, an external thread matched with the internal thread on the housing 1 is provided on the outer side surface of the lifting plate 14, and the lifting plate 14 and the inner side surface of the housing 1 are always in a screwed state during the rotation and lifting process of the permanent magnet 11.

Specifically, the cover plate 2 is connected with the shell 1 through six screws 6, the cover plate 2 is provided with a positioning groove 21 matched with the shell 1, and the screws 6 between the cover plate 2 and the shell 1 are detached, so that the quick detachment of the magnetic switch can be realized.

Specifically, the permanent magnet 11 is made of a Ru-Fe-B ferromagnetic material, and has magnetic properties far exceeding those of ferrite magnets, alnico and samarium cobalt, so that the permanent magnet 11 can adsorb heavy workpieces.

In this embodiment, the shell 1 is made of pure iron, the iron content exceeds 99.999%, and after the pure iron shell 1 is magnetized by the magnetic field of the permanent magnet 11, the loss of the magnetic force of the permanent magnet 11 can be reduced to the greatest extent, so as to improve the adsorption capability of the magnetic switch.

The foregoing is merely specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily think about changes or substitutions within the technical scope of the present application, and the changes and substitutions are intended to be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (8)

1. A magnetic switch, characterized in that: including casing (1), install apron (2) on casing (1), locate knob (3) on apron (2), be equipped with guiding axle (13) and cover in casing (1) and establish permanent magnet (11) outside guiding axle (13), fixedly connected with pivot (4) on knob (3), pivot (4) transmission is connected with bull stick (5), bull stick (5) insert in permanent magnet (11) in order to drive permanent magnet (11) and take place to rotate together at knob (3) in-process, movable sleeve is followed guiding axle (13) vertical movement's connecting sleeve (12) after rotatory around guiding axle (13) on guiding axle (13), connecting sleeve (12) become integrated connection with permanent magnet (11) in order to let permanent magnet (11) follow guiding axle (13) vertical movement at knob (3) in-process of rotating.

2. The magnetic switch of claim 1, wherein: the bottom of the permanent magnet (11) is fixedly connected with a lifting plate (14), and the lifting plate (14) is movably connected with the inner side of the shell (1) in a fitting way so as to lift along with the permanent magnet (11) in the rotating process of the permanent magnet (11).

3. The magnetic switch of claim 1, wherein: the rotating rod (5) is in an inverted U shape, two ends of the rotating rod (5) are inserted into the permanent magnets (11), and a clamping groove (41) matched with the top of the rotating rod (5) is formed in the bottom of the rotating shaft (4).

4. The magnetic switch of claim 1, wherein: the cover plate (2) is provided with a limit groove (22), and the top of the limit groove (22) is higher than the top of the rotating rod (5).

5. The magnetic switch of claim 1, wherein: the guide shaft (13) is a screw rod extending upwards from the center of the inside of the shell (1), and the connecting sleeve (12) is a threaded sleeve matched with the screw rod.

6. The magnetic switch of claim 2, wherein: an inner thread is arranged on the inner side surface of the shell (1), and an outer thread matched with the inner thread on the shell (1) is arranged on the outer side surface of the rising plate (14).

7. The magnetic switch of claim 4, wherein: the cover plate (2) is provided with a positioning groove (21) matched with the shell (1), and the cover plate (2) is connected with the shell (1) through a screw (6).

8. The magnetic switch of claim 1, wherein: the permanent magnet (11) is made of a strong magnetic material.

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