TWI385295B - Magnetic latch mechanism - Google Patents

Description

Magnetic lock device

The invention relates to a magnetic lock device, in particular to a magnetic lock device capable of adjusting the magnitude of a magnetic force.

At present, most of the magnetic locks on the market are composed of a lock body that can generate a magnetic force and an adsorption device that can be adsorbed by the lock body. The lock body includes a permanent magnet. However, the magnetic force generated by the permanent magnet is constant. Therefore, the magnetic lock of a certain type of magnetic lock cannot be applied to a device whose required magnetic force is different from the magnetic force of the magnetic lock of the model, and the applicability is poor. In addition, when different magnetic body locks are required, different types of magnets need to be selected to design the magnetic lock to make the magnetic lock generate different magnetic forces, thus increasing the complexity of the design.

In view of this, the present invention provides a magnetic lock device that can adjust the magnitude of a magnetic force as needed.

The magnetic lock device includes a lock body. The lock body includes a magnetic member for generating a constant magnetic force, a carrier for carrying the magnetic member, and a magnetic conductive member for conducting magnetic lines of force. The carrier is disposed on one side of the magnetic conductive member and rotatable relative to the magnetic conductive member. When the carrier rotates relative to the magnetic conductive member under the action of an external force, the carrier drives the magnetic member to rotate relative to the magnetic conductive member, so that the number of magnetic lines of the magnetic member passing through the magnetic conductive member changes, thereby changing the suction force of the magnetic lock device.

By means of the magnetic lock device, the user can adjust the magnetic force of the magnetic lock device to meet different magnetic requirements.

Referring to Figures 1 and 2, the magnetic lock device 100 cooperates with a suction device (not shown) for locking doors, windows, and the like. The adsorption device is a metal that can be attracted by a magnetic material, such as an iron block. The magnetic lock device 100 includes a bottom plate 10 , a cover 30 that is engaged with the bottom plate 10 , and a lock body 20 that is received between the bottom plate 10 and the cover 30 .

Referring to FIG. 2 and FIG. 3 together, the bottom plate 10 is substantially rectangular. The central portion of the bottom plate 10 is upwardly arched to form a rectangular base portion 110. The base 110 forms two fixing portions 120 with respect to both edges. The two fixing portions 120 are symmetrical with respect to the base portion 110. The two edges of the base portion 110 adjacent to the fixing portion 120 are respectively provided with two symmetrical engaging holes 112. The two engaging holes 112 on one edge are symmetrically distributed with the two engaging holes 112 on the other edge. Each fixing portion 120 is provided with a plurality of fixing holes 122. The magnetic lock device 100 can be fixed to a door, a window, or the like by a fixing member (not shown) such as a screw passing through a plurality of fixing holes 122 in the bottom plate 10.

The lock body 20 includes a magnetic member 210 for generating a constant magnetic force, a carrier 220 for carrying the magnetic member 210, an operating member 230 fixed to the carrier 220, a magnetic conductive member 240 for conducting magnetic lines of force, and a positioning bearing. The body 220 and the two positioning plates 250 of the magnetic conductive member 240. The operating member 230 can be applied with an external force, and the carrier 220 is rotated relative to the magnetic conductive member 240 under the action of an external force, thereby driving the magnetic member 210 to rotate relative to the magnetic conductive member 240. Thereby, the number of magnetic lines of force passing through the magnetic conductive member 240 is changed, thereby changing the magnitude of the magnetic force of the lock body 20.

The magnetic member 210 is substantially elliptical and includes a rectangular portion 212 and an arcuate portion 214 disposed at opposite ends of the rectangular portion 212. The two curved portions 214 are the N pole and the S pole of the magnetic member 210, respectively. In the embodiment, the magnetic member 210 is a neodymium magnet with a strong magnetic force, and the surface thereof is subjected to nickel plating anti-rust treatment.

The carrier 220 is generally cylindrical. The carrier 220 is provided with a receiving groove 222 for receiving the magnetic member 210 in a direction perpendicular to the axis A of the axis. The receiving groove 222 is interference fit with the magnetic member 210 such that the carrier 220 forms a complete cylindrical surface. The two circular end faces of the carrier 220 parallel to each other are respectively provided with a rotating shaft 224 and a positioning shaft 226. The rotating shaft 224, the positioning shaft 226 and the carrier 220 are coaxially arranged. The portion of the shaft 224 is cut away to form a planar slit 2242 of a parallel axis A. The planar slit 2242 is provided with an inwardly recessed positioning groove (not shown).

The operating member 230 is substantially in the shape of a disk which is made of a material that is not easily magnetized. The operating member 230 is provided with a limiting hole 232 for receiving the rotating shaft 224 and a pin 234 for fixing the operating member 230 to the rotating shaft 224. The limiting hole 232 is a through hole disposed in the middle of the operating member 230, and an inner surface thereof is formed with a flat surface 2322 that cooperates with the planar slit 2242 of the rotating shaft 224. The operating member 230 is provided with a pin hole 236 for receiving the pin 234 in a direction perpendicular to the plane 2322. The pin 234 passes through the pin hole 236 and is screwed to a positioning groove (not shown) of the rotating shaft 224, thereby fixing the carrier 220 to the operating member 230. Wherein, the operating member 230 and the rotating shaft 224 are respectively provided with a matching plane 2322 and a planar slit 2242, and the pin hole 236 and the positioning groove (not shown) are respectively disposed on the plane 2322 and the planar slit 2242, which is advantageous for the operating member. 230 is assembled with carrier 220. In addition, the mating of the plane 2322 and the planar cutout 2242 can also prevent the operating member 230 from rotating relative to the rotating shaft 224 to damage the pin 234.

The magnetic conductive member 240 is made of a material that is preferably magnetically conductive and is not easily magnetized. The magnetic conducting member 240 is substantially rectangular parallelepiped for conducting magnetic lines of force of the magnetic member 210. A portion of the magnetically conductive member 240 is cut away to form an arcuate first recess 242 that conforms to the cylindrical surface of the carrier 220. The magnetic conductive member 240 is also formed with two first through holes 244. The magnetic conductive member 240 is fixed to the positioning plate 250 by two first through holes 244. In addition, in order to better engage the magnetic lock device 100 with the adsorption device, a plurality of strip-shaped ribs 246 are protruded from the end of the magnetic conductive member 240 opposite to the first concave portion 242.

In addition, the lock body 20 further includes a stopper 260 made of a material that is not easily magnetized. The shape of the stop 260 is substantially similar to the shape of the magnetically conductive member 240. The stop member 260 is generally rectangular parallelepiped and is partially cut away to form a second recess 262 that matches the cylindrical surface of the carrier 220. The stopper 260 is located on a side of the carrier 220 opposite to the magnetic conductive member 240, and the second recess 262 is opposed to the first recess 242 to form a space matching the cylindrical surface of the carrier 220 for receiving the carrier 220. In it. The stopper 260 is also formed with two second through holes 264 corresponding to the through holes 252. The stopper 260 is fixed to the positioning plate 250 by the two second through holes 264.

The two positioning plates 250 are generally square in shape and are each made of a material that is not easily magnetized. The four apex angles of each of the positioning plates 250 are respectively formed with perforations 252 corresponding to the first through holes 244. The screw 254 can pass through the through hole 252 and be screwed to the first through hole 244. In addition, a central portion of the two positioning plates 250 is formed with a shaft hole 256 for receiving the rotating shaft 224 and a positioning hole 258 for receiving the positioning shaft 226. In the present embodiment, the thickness of the positioning plate 250 is smaller than the length of the rotating shaft 224, so that the operating member 230 can be fixed to the rotating shaft 224 after the rotating shaft 224 passes through the shaft hole 256.

The cover 30 is covered on the bottom plate 10. The cover 30 corresponds to the shape of the base 110 of the base plate 10 and includes a generally square bottom wall 310, four side walls 320 located at four edges of the bottom wall 310 and projecting from the bottom wall 310. The four side walls 320 are connected end to end and form a receiving portion 330 for receiving the lock body 20 with the bottom wall 310 and the bottom plate 10 (for convenience of description, two opposite side walls 320 are referred to as a first side wall, and the other two opposite side walls 320 are Called the second side wall). A central portion of the bottom wall 310 is provided with a circular opening 312. The diameter of the circular opening 312 is slightly larger than the diameter of the operating member 230. The first side wall is convexly provided with an engaging protrusion 322 corresponding to the engaging hole 112. The engaging protrusion 322 is engaged in the corresponding engaging hole 112 such that the cover 30 is fixed to the bottom plate 10. One of the second side walls defines a rectangular opening 324. The magnetic conductive member 240 is exposed to the cover 30 by a rectangular opening 324. In addition, in other embodiments, the shape of the cover 30 and the bottom plate 10 may vary depending on the shape requirements of the lock body 20.

When assembled, the screws 254 pass through the through holes 252 and are respectively screwed to the first through holes 244 and the second through holes 264, so that the magnetic conductive member 240 and the stopper 260 are fixed to the positioning plate 250 on which the second shaft hole is opened. The second recess 262 is opposed to the first recess 242. The magnetic member 210 is received in the carrier 220, and the carrier 220 is placed between the magnetic conductive member 240 and the stopper 260, and the positioning shaft 226 is passed through the positioning hole 258. The rotating shaft 224 of the carrier 220 passes through the shaft hole 256, and the positioning plate 250 having the first shaft hole 256 is fixed to the magnetic conductive member 240 and the stopper 260 by the screw 254, so that the carrier 220 is rotatably received. The magnetic conductive member 240, the stopper 260, and the positioning plate 250 are formed in an enclosed space (not shown). The operating member 230 is fixed to the rotating shaft 224 of the magnetic conductive member 240. Finally, the cover 30 is fixed to the bottom plate 10 such that both the operating member 230 and the magnetic conductive member 240 are exposed to the cover 30.

In use, the operating member 230 is rotated to rotate the carrier 220 and drive the magnetic member 210 to rotate, so that the number of magnetic lines of force passing through the magnetic conductive member 240 is changed, thereby changing the magnitude of the suction generated by the magnetic lock device 100. As shown in FIG. 4, when the N pole or the S pole of the magnetic member 210 faces the magnetic conductive member 240, the magnetic flux line of the magnetic conductive member 240 is the most, that is, the suction force generated by the magnetic lock device 100 is maximized. At this time, the magnetic member 210 The adsorption force to the adsorption device is the largest. As shown in FIG. 5, when the line connecting the N pole and the S pole of the magnetic member 210 is perpendicular to the magnetic conductive member 240, the magnetic flux line of the magnetic conductive member 240 is the least, that is, the suction force generated by the magnetic lock device 100 is maximum. The magnetic member 210 has the least adsorption force to the adsorption device.

The magnetic force of the magnetic lock device 100 can be adjusted so that the user can adjust the suction force between the magnetic lock device 100 and the adsorbing member. Therefore, the magnetic lock device 100 can be applied to applications having different suction demands.

In summary, the present invention complies with the requirements of the invention patent and submits a patent application according to law. However, the above description is only a preferred embodiment of the present invention, and equivalent modifications or variations made by those skilled in the art of the present invention should be included in the following claims.

100‧‧‧Magnetic lock device

10‧‧‧floor

110‧‧‧ base

112‧‧‧Snap hole

120‧‧‧Fixed Department

122‧‧‧Fixed holes

20‧‧‧Lock body

210‧‧‧Magnetic parts

212‧‧‧Rectangle

214‧‧‧Arc Department

220‧‧‧Carrier

222‧‧‧ housing trough

224‧‧‧ shaft

2242‧‧‧ planar incision

226‧‧‧ positioning axis

230‧‧‧Operating parts

232‧‧‧Limited holes

2322‧‧‧ Plane

234‧‧‧ Pins

236‧‧ pin hole

240‧‧‧ Magnetic Conducting Parts

242‧‧‧First recess

244‧‧‧ first through hole

246‧‧ ‧ ribs

250‧‧‧ Positioning Plate

252‧‧‧Perforation

254‧‧‧screw

256‧‧‧ shaft hole

258‧‧‧Positioning holes

260‧‧‧stops

262‧‧‧Second recess

264‧‧‧Second through hole

30‧‧‧ cover

310‧‧‧ bottom wall

312‧‧‧Circular opening

320‧‧‧ side wall

322‧‧‧Snap protrusion

324‧‧‧ rectangular opening

330‧‧‧ Housing Department

1 is a schematic view of a magnetic lock device of a preferred embodiment.

2 is an exploded view of the magnetic lock device of FIG. 1, the magnetic lock device including a magnetic member and a magnetic conductive member.

Figure 3 is a schematic view of another perspective view of the magnetic lock device of Figure 2.

Figure 4 is a schematic view showing the magnetic flux of the magnetic member passing through the magnetic conductive member at most.

Fig. 5 is a schematic view showing the magnetic flux of the magnetic member passing through the magnetic conductive member at a minimum.

100‧‧‧Magnetic lock device

10‧‧‧floor

110‧‧‧ base

112‧‧‧Snap hole

120‧‧‧Fixed Department

122‧‧‧Fixed holes

20‧‧‧Lock body

210‧‧‧Magnetic parts

212‧‧‧Rectangle

214‧‧‧Arc Department

220‧‧‧Carrier

222‧‧‧ housing trough

224‧‧‧ shaft

2242‧‧‧ planar incision

230‧‧‧Operating parts

232‧‧‧Limited holes

2322‧‧‧ Plane

234‧‧‧ Pins

236‧‧ pin hole

240‧‧‧ Magnetic Conducting Parts

242‧‧‧First recess

244‧‧‧ first through hole

246‧‧ ‧ ribs

250‧‧‧ Positioning Plate

252‧‧‧Perforation

254‧‧‧screw

256‧‧‧ shaft hole

258‧‧‧Positioning holes

260‧‧‧stops

262‧‧‧Second recess

264‧‧‧Second through hole

30‧‧‧ cover

310‧‧‧ bottom wall

312‧‧‧Circular opening

320‧‧‧ side wall

322‧‧‧Snap protrusion

324‧‧‧ rectangular opening

Claims (10)

A magnetic lock device comprising a lock body, the improvement comprising: the lock body comprising a magnetic member for generating a constant magnetic force, a carrier for carrying the magnetic member, a magnetic conductive member for conducting a magnetic line of the magnetic member, the carrier being disposed on One side of the magnetic conductive member is rotatable relative to the magnetic conductive member. When the carrier body rotates relative to the magnetic conductive member under the action of an external force, the carrier body drives the magnetic member to rotate relative to the magnetic conductive member, so that the magnetic member passes through the magnetic conductive member. The number of magnetic lines of force changes to change the suction fixture of the magnetic lock device. The magnetic lock device of claim 1, wherein the magnetic member comprises N and S poles disposed opposite to opposite ends of the magnetic member, the magnetic member passing through the carrier and having two N and S poles The end is exposed to the carrier. The magnetic lock device of claim 2, wherein the carrier comprises a cylindrical surface, the carrier is provided with a receiving groove for penetrating the cylindrical surface, and the magnetic member is received in the receiving groove, so that the carrier Form a complete cylindrical surface. The magnetic lock device of claim 3, wherein the magnetic member is provided with arcs at both ends of the N pole and the S pole. The magnetic lock device of claim 1, wherein the carrier further comprises a rotating shaft and a positioning shaft opposite to the rotating shaft, the rotating shaft is disposed coaxially with the positioning shaft, and the rotating shaft is parallel to the axial direction The portion is cut to form a planar cut. The magnetic lock device of claim 5, wherein the lock body further comprises an operating member fixed to the carrier, the operating member defines a limiting hole for receiving the rotating shaft, the limiting hole comprises a flat surface The flat surface is in interference fit with the planar slit. The magnetic lock device of claim 1, wherein the lock body further comprises two positioning plates and a stopper fixed between the two positioning plates, and the magnetic conductive member is fixed to the two positioning plates. A receiving portion for receiving the carrier is formed between the stopper and the stopper. The magnetic lock device of claim 1, wherein the magnetic lock device further comprises a bottom plate and a cover fixed to the bottom plate, and the cover body cooperates with the bottom plate to form a receiving space for receiving the lock body. The magnetic lock device of claim 8, wherein the cover body is formed with a rectangular opening, and the magnetic conductive member is exposed to the cover body by the rectangular opening. The magnetic lock device of claim 9, wherein the cover body comprises a bottom wall, four side walls at four edges of the bottom wall and protruding from the bottom wall, the four side walls are connected end to end and form a bottom wall A recess for receiving the lock body, the rectangular opening being formed on one of the side walls.