WO2013139297A1

WO2013139297A1 - Shock-proof mechanical magnetic lock

Info

Publication number: WO2013139297A1
Application number: PCT/CN2013/073043
Authority: WO
Inventors: 张宗志
Original assignee: 上海欧一安保器材有限公司
Priority date: 2012-03-22
Filing date: 2013-03-22
Publication date: 2013-09-26
Also published as: BR112014023326B1; PL2829671T3; DK2829671T3; CN102619404B; ES2822602T3; PT2829671T; EP2829671B1; EP2829671A1; CN102619404A; EP2829671A4; RU2014136548A

Abstract

A shock-proof mechanical magnetic lock, comprising an iron plate (211) located on one side, a pull plug (212) vertically protruding on the iron plate (211), a magnet (221) located on the other side, a sleeve (222) located in the magnet (221) and having a top opening for inserting the pull plug (212), and a stop ring (223) sleeved outside the sleeve (222); the stop ring (223) is fixed on the magnet (221); the bottom of the sleeve (222) is installed on a substrate (226) below the magnet (221) via a bottom connecting piece (227); the magnet (221) and the stop ring (223) can axially move relative to the sleeve (222); and the sleeve (222) and the stop ring (223) are provided with a spring (229) therebetween.

Description

Shock absorber magnetic lock

Technical field

The invention relates to a lock, in particular to a shock absorber mechanical magnetic lock. Background technique

An existing shock absorber mechanical magnetic lock is shown in FIG. 1 and FIG. 2, the iron plate 111 on one side of the lock body is provided with a vertically protruding pull bolt 112, and the magnet 121 on the other side includes a top opening for insertion. The sleeve 122 of the pull pin 112 and the stop ring 123 sleeved around the sleeve 122. Wherein, the end of the pull pin 112 forms a flange. The side wall of the sleeve 122 is provided with a plurality of circular holes, and balls 124 are placed in the respective circular holes. The upper portion of the center hole of the stop ring 123 has a larger aperture than the lower portion. The bottom of the sleeve 122 is fixed to the base plate 126 below the magnet 121 by a bottom joint member 127, and the stopper ring 123 is fixed to the magnet 121, and the magnet 121 and the stopper ring 123 are vertically movable with respect to the sleeve 122.

The bottom connector 127 is fixed to the bottom of the sleeve 122 above the substrate 126, and the other end is fixed to the spacer 125 below the substrate 126. The upper and lower surfaces of the spacer 125 are flat and generally rectangular.

A limiting screw 128 is fixed on the magnet 121 at one end. The screw extends through a corresponding hole in the substrate 126 and forms a nut at the end. The diameter of the corresponding hole on the substrate 126 is larger than the diameter of the screw of the limiting screw 128 and smaller than the diameter of the nut. The spring 129 seated on the set screw 128 is caught between the nut of the set screw 128 and the base plate 126. In the existing lock body structure, two limit screws 128 on both sides of the sleeve 122 are used and a spring 129 is placed on each of the limit screws 128.

After the lock body is energized, the magnetic field generated by the magnet 121 closes the iron plate 111 when the door is closed, and the pull pin 112 is inserted from the top opening of the sleeve 122 of the magnet 121, as shown in Fig. 1, when the stop ring 123 is surrounded by a large aperture. The ball 124, so that the end flange of the pull pin 112 can enter the sleeve 122, in which case the locking force is only the suction force of the magnet 121. If the iron plate 111 is subjected to an external force, the iron plate 111 will pull the magnet 121 away from the substrate 126 against the elastic force of the spring 129 due to the suction force, as shown in FIG. 2, so that the stop ring 123 is upward with respect to the sleeve 122. Moving, the portion of the stop ring 123 having a small aperture surrounds the ball 124, and the end flange of the pressing ball 124 that abuts against the shaft 112 against the shaft cannot be opened. This existing magnetic lock has a low service life and has a service life of only 80,000 to 120,000 cycles. The impact resistance is poor and cannot meet the requirements of customers. Frequently stuck, that is, it is easy to lock between the ball and the pull bolt. The two return springs are easily broken. There is a defect in the design of the spacer structure on the bottom connector. When the door rotates, the rotation of the lock body with the multi-directional direction of the iron plate is insufficient, and the lock body is unevenly loaded to generate a lever, which is easy to be opened and has low safety.

Summary of the invention

The technical problem to be solved by the present invention is to provide a shock-absorbing mechanical magnetic lock with a lock body structure that is more durable and more secure.

In order to solve the above technical problem, the present invention adopts the following technical solutions:

A suspension mechanical magnetic lock includes: an iron plate on one side and a pull bolt vertically protruding from the iron plate; and a magnet on the other side, a sleeve in the magnet and a top opening capable of inserting the pull bolt, and A snap ring that is placed around the periphery of the sleeve. The ends of the pull bolts form a flange, and the sleeve and the snap ring have mechanisms for cooperating with the apertures that adjust the internal cavity of the sleeve. The retaining ring is fixed to the magnet, and the bottom of the sleeve is mounted to the base plate under the magnet through the bottom connecting member. The magnet and the retaining ring are axially movable relative to the sleeve, and a spring is disposed between the sleeve and the retaining ring.

For the above-mentioned suspension mechanical magnetic lock, one end of the bottom connecting member is fixed to the bottom of the sleeve, and the other end is fixed on the spacer under the substrate, and the bottom of the sleeve abuts against the corresponding block through the corresponding opening on the substrate.

For the above-mentioned suspension mechanical magnetic lock, the diameter of the corresponding opening on the substrate is larger than the diameter of the bottom of the sleeve and smaller than the maximum diameter of the horizontal section of the spacer.

For the above-mentioned suspension mechanical magnetic lock, the bottom connecting piece is a screw.

For the above-mentioned suspension mechanical magnetic lock, the upper and lower surfaces of the spacer are curved.

For the above-mentioned suspension mechanical magnetic lock, the upper opening edge of the sleeve extends radially outward to form a flange. For the above-mentioned suspension mechanical magnetic lock, the diameter of the flange at the opening of the sleeve is larger than the diameter of the outer wall of the retaining ring.

For the above-mentioned suspension mechanical magnetic lock, the substrate is composed of an aluminum groove.

Compared with the prior art, the main advantages of the technical solution of the present invention are as follows: 1. Remove the two springs and the two limit screws in the existing lock body structure, and set the spring between the sleeve and the stop ring, thus improving the life of the lock body, from the original 80,000 to 120,000 times. Life expectancy has increased to 500,000 lifespans today.

2. The spacers on the bottom connector are improved, and the original rectangular block is changed to the current spherical pad. The purpose is to rotate the magnet with the iron plate in multiple directions when the door rotates, avoiding the original rigid state. Therefore, the impact resistance of the lock body is improved, and the impact test is increased from the original 120J to the current 160J.

3. The top of the sleeve has a single structure, which can effectively prevent dust from entering the inside of the lock body and reduce the probability of the inner ball being stuck.

4. Reduced assembly parts and reduced cost in processing and assembly.

5. The fixing mechanism of the sleeve is matched with the substrate in a spherical manner. The random steering of the spherical block can maximize the rotation of the door. When the door rotates, the iron plate and the magnet that are attracted can rotate in multiple directions. This minimizes the defects caused by the rotation of the door, and the door is not easily opened to improve safety.

DRAWINGS

Figure 1 shows a locked state of a conventional magnetic lock when it is not subjected to an external force;

Figure 2 shows the locked state of the magnetic lock of Figure 1 when subjected to an external force;

Figure 3 is a view showing the locked state of the magnetic lock of the present invention when it is not subjected to an external force;

Fig. 4 shows the locked state of the magnetic lock of Fig. 3 when an external force is applied. DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS As shown in FIGS. 3 and 4, the suspension mechanical magnetic lock of the present invention includes an iron plate 211 on one side and a pull bolt 212 vertically protruding from the iron plate 211, and a magnet 221 on the other side. a sleeve 222 located in the magnet 221 and having a top opening for inserting the pull bolt 212 and a stop ring 223 sleeved around the sleeve 222. Wherein, the end of the pull pin 212 forms a flange. The sleeve 222 and the retaining ring 223 have a mechanism for cooperating with an aperture for adjusting the inner cavity of the sleeve 222. The mechanism includes a plurality of circular holes formed in the side wall of the sleeve 222 on one hand, and is placed in each circular hole. Ball 224, on the other hand A step is formed on the inner surface of the side wall of the stopper ring 223, and the upper portion of the inner cavity of the stopper ring 223 has a larger aperture than the lower portion. The stop ring 223 is fixed on the magnet 221, and the bottom of the sleeve 222 is rotatably mounted to the substrate 226 below the magnet 221 via the bottom connecting member 227, and the magnet 221 and the stop ring 223 are axially movable with respect to the sleeve 222. mobile. A spring 229 is disposed between the sleeve 222 and the stop ring 223.

The bottom connector 227 is fixed at the bottom of the sleeve 222, and the other end is fixed to the spacer 225 under the substrate 226. The bottom of the sleeve 222 passes through the corresponding opening on the substrate 226 against the spacer 125, and the substrate 226 is The diameter of the corresponding opening is larger than the diameter of the bottom of the sleeve 222 and smaller than the maximum diameter of the horizontal section of the spacer 125. The bottom connector 227 is preferably a screw, and the spacer 225 that is placed on the screw between the bottom of the sleeve 222 and the nut of the screw is preferably an iron block having an arcuate upper and lower surfaces.

Preferably, the upper opening edge of the sleeve 222 extends radially outwardly to form a flange, and more preferably the diameter of the flange at the opening of the sleeve 222 is greater than the diameter of the outer wall of the stop ring 223.

As an example, the substrate 226 may be constructed of an aluminum bath. The plurality of circular holes in the side wall of the sleeve 222 may be six, and the balls 224 may be six steel balls.

The magnetic lock of the suspension mechanical machine of the invention realizes the process of unlocking and unlocking by means of electromagnetic suction and release, and the conversion of electromagnetic force and mechanical force is realized by electromagnetic attraction to pull the displacement of the components in the lock body to realize mutual conversion.

After the lock body is energized, the magnetic field generated by the magnet 221 when closing the door attracts the iron plate 211 on the other side, and the pull pin 212 is inserted from the top opening of the sleeve 222 of the magnet 221, as shown in FIG. 3, at this time, the stop ring 223 The large aperture portion encloses the ball 224 on the sleeve 222, and the end flange of the pull pin 212 slides over the ball 224 into the lumen of the sleeve 222. At this time, the magnetic attraction force of the magnet 221 and the iron plate 211 is maintained to be locked, and there is no mechanical force, and the locking force at this time is small.

When the iron plate 211 receives an external force, the iron plate 211 drives the magnet 221 away from the substrate 226 due to the suction force between the iron plate 211 and the magnet 221, as shown in FIG. 4, so that the stop ring 223 overcomes the elastic force of the spring 229. The sleeve 222 is moved upward until the small aperture portion of the stop ring 223 surrounds the ball on the sleeve 222, and the plurality of balls on the sleeve 222 are pressed radially toward the center by the stop ring 223, The end flange of the inserted pull bolt 212 is tightly held, and is self-locked and converted into a mechanical tension to achieve a large tension locking state. At this time, both the suction force of the magnet 221 and the mechanical force of the ball 224 are locked, thereby achieving the purpose of locking, and having a large locking force. When the lock body is de-energized, the magnetic field of the magnet 221 disappears, and the stop ring 223 is reset by the elastic force of the spring 229, and the magnet 221 is moved toward the substrate 226 and rests on the substrate 226 again. At this time, the stop ring 223 is large. The aperture portion encloses the balls on the sleeve 222. When the pretension is applied to the iron plate 211

When the (pre-pressure) is lower than the prescribed requirement, the end flange of the pull pin 212 is withdrawn from the sleeve 222, and the iron plate 211 is separated from the magnet 221 to unlock. Since the restoring force of the spring 229 is constant, when the pretension is

When the (pre-pressure) is too large, the spring force is insufficient to reset the stop ring 223, and the pull bolt 212 cannot be pulled out, so that the lock cannot be unlocked, so that the lock can be unlocked only when the pre-tension (pre-pressure) is lower than the prescribed value.

Claims

Claim

1. A shock absorber mechanical magnetic lock comprising: an iron plate (211) on one side and a pull bolt (212) vertically protruding from the iron plate (211), and a magnet (221) on the other side, a sleeve (222) located in the magnet (221) and having a top opening for inserting the pull bolt (212) and a stop ring (223) sleeved around the sleeve (222), the end of the pull bolt (212) is formed The flange, the sleeve (222) and the stop ring (223) have a mechanism for cooperating with an aperture for adjusting the inner cavity of the sleeve (222), and the stop ring (223) is fixed on the magnet (221), and the feature thereof The bottom of the sleeve (222) is mounted to the substrate (226) below the magnet (221) through the bottom connector (227), and the magnet (221) and the stop ring (223) are axially opposite to the sleeve (222). Moving, a spring (229) is provided between the sleeve (222) and the stop ring (223).

2. The suspension mechanical magnetic lock according to claim 1, wherein the bottom connecting member (227) has one end fixed to the bottom of the sleeve (222) and the other end fixed to the spacer (225) under the substrate (226). Upper, the bottom of the sleeve (222) abuts against the spacer (125) through a corresponding opening in the substrate (226).

3. The suspension mechanical magnetic lock of claim 2, wherein the diameter of the corresponding opening in the base plate (226) is larger than the diameter of the bottom of the sleeve (222) and smaller than the maximum diameter of the horizontal section of the spacer (125).

4. A suspension mechanical magnetic lock according to claim 1 or 2, characterized in that the bottom connector (227) is a screw.

The shock absorber mechanical magnetic lock according to claim 2, wherein the upper and lower surfaces of the spacer (225) are curved.

6. The suspension mechanical magnetic lock of claim 1 wherein the upper opening edge of the sleeve (222) extends radially outwardly to form a flange.

7. A suspension mechanical magnetic lock according to claim 6, wherein the diameter of the flange at the opening of the sleeve (222) is larger than the diameter of the outer wall of the stop ring (223).

The suspension mechanical magnetic lock according to claim 1, wherein the substrate (226) is formed of an aluminum groove.