Magnetic lock

Abstract

The utility model belongs to the technical field of magnetic locks, and discloses a magnetic lock capable of improving use safety. The magnetic lock comprises a lock body assembly and a pull bolt component used for being inserted into the lock body assembly for locking, the lock body assembly comprises a shell with a top opening, an electric trigger assembly, a brake ring assembly and an iron plate, and the electric trigger assembly and the brake ring assembly are located in the shell and sequentially arranged from bottom to top; the iron core is arranged on the electric trigger assembly in a sleeving mode and fixed to the inner wall of the shell, a gap is formed between the iron plate and the iron core when the iron plate and the iron core are not attracted, and the lock body assembly is configured to be capable of pushing the brake ring assembly and the iron plate to move downwards together until the iron plate gets close to the surface of the iron core when the pull plug component moves to make contact with the upper end face of the brake ring assembly. And meanwhile, the pulling bolt part synchronously pushes the electric triggering assembly to electrify the iron core, so that the iron plate and the iron core are attracted. The magnetic lock provided by the utility model can work normally even if being interfered by various factors in use.

Description

Technical Field

[0001] The utility model relates to the technical field of magnetic locks, in particular to a magnetic lock. Background Art

[0002] Magnetic locks are widely used in people's daily work and life because of their advantages such as energy saving and environmental protection, simple installation, convenient use, and power off to unlock. Figure 4 As shown, the existing magnetic lock 100' mainly includes a lock body assembly 2' and a pull bolt assembly 1' locked with the lock body assembly 2'. Figure 4 The magnetic lock 100' is in the closed state (i.e. locked state). In this state, the iron plate 11' in the bolt assembly 1' is attracted to the iron core 21' in the lock body assembly 2'. Figure 5 When the external force F shown acts, since the iron plate 11' and the iron core 21' are in the attracted state, the bolt assembly 1' will pull the iron core 21' to move upward for a certain displacement, and the inclined surface of the brake ring 22' will push the steel ball 23' to move inwardly of the center hole. At this time, the large outer diameter 13' at the end of the bolt 12' of the bolt assembly 1' will not be able to be pulled out, and it is still in the locked state. When the attraction between the iron plate 11' and the iron core 21' is eliminated or is insufficient to maintain the external factors and disengage, it will be unlocked.

[0003] In the existing magnetic locks, such as Figure 4 and Figure 5 As shown, on the one hand, the iron plate 11' is integrated with the pull bolt 12' in the pull bolt assembly 1', and the iron plate 11' is an external exposed type, which is easily damaged by warping, making the magnetic lock 100' lock ineffective; on the other hand, the iron plate 11' and the iron core 21' are sucked together and move up and down synchronously under the action of external force. Due to adverse factors such as door deformation and unreasonable installation, when the direction of the external force changes, and when large vibrations, shaking and distortions occur, the iron plate 11' and the iron core 21' have limited suction force and are easily disengaged, causing the lock to fail such as unlocking; in addition, the iron core 21' is always powered on waiting for suction, which is more energy-consuming. Utility Model Content

[0004] In order to improve the safety of the magnetic lock so that it can work normally even if it is disturbed by various factors during use, the utility model proposes a novel magnetic lock.

[0005] According to the utility model, the magnetic lock comprises: a lock body assembly and a bolt pull component for inserting into the lock body assembly for locking, the lock body assembly comprises a shell with a top opening, an electric trigger assembly and a brake ring assembly arranged in sequence from bottom to top in the shell, an iron plate sleeved and fixed on the brake ring assembly, and an iron core sleeved on the electric trigger assembly and fixed to the inner wall of the shell, a gap is formed between the iron plate and the iron core when they are not attracted, the lock body assembly is constructed so that when the bolt pull component moves to contact the upper end surface of the brake ring assembly, it can push the brake ring assembly and the iron plate to move downward together until the iron plate is close to the surface of the iron core, and at the same time, the bolt pull component synchronously pushes the electric trigger assembly to energize the iron core, so that the iron plate and the iron core are attracted.

[0006] Furthermore, the electric trigger component includes a circuit board, a button switch, a button spring and a button arranged in sequence from bottom to top, the button spring is connected between the button switch and the button, and the pull bolt component pushes the button downward to compress the button spring until the button contacts the button switch, thereby triggering the circuit board electrically connected to the button switch to work.

[0007] Furthermore, the button includes a shell for partially installing a button spring, the shell includes a main body and a boss connected to one end of the main body close to the button switch, and when the boss contacts the button switch, the circuit board electrically connected to the button switch is triggered to work.

[0008] Furthermore, the electric trigger assembly also includes a sleeve sleeved between the button and the iron core, and the upper end of the sleeve is overlapped and fixed on the upper surface of the iron core.

[0009] Furthermore, a truncated cone for abutting the main body is formed on the inner wall of the sleeve, and the bottom surface of the truncated cone abuts against the top surface of the boss.

[0010] Furthermore, the brake ring assembly includes a brake ring and a plurality of steel balls located on the same cross-section inside the brake ring. The iron plate is fixed on the outer peripheral wall of the brake ring. The steel balls abut against the sleeve. When the bolt component is inserted into the brake ring, the plurality of steel balls are located on the outer periphery of the bolt component. The brake ring is used to push each steel ball toward the bolt component to prevent the bolt component from escaping from the brake ring.

[0011] Furthermore, the bolt pulling component includes an abutting portion for abutting against the upper end surface of the brake ring and an insertion portion connected to the abutting portion, the insertion portion includes a rod segment connected to the abutting portion and a ball head connected to the rod segment, the outer diameter of the ball head is larger than the outer diameter of the rod segment, and multiple steel balls are located on the outer periphery of the rod segment when the insertion portion is inserted into the brake ring.

[0012] Furthermore, the upper end surface of the brake ring is flush with the top opening of the housing.

[0013] Furthermore, a stop platform for stopping the iron plate is formed inwardly at the top opening of the shell.

[0014] Furthermore, the bottom of the shell is detachably connected to an end cover, and the circuit board is detachably fixed to the end cover.

[0015] Compared with the prior art, the magnetic lock of the utility model has the following advantages:

[0016] 1) The iron plate is built into the outer shell of the lock body assembly, and the iron plate and the pull bolt component are installed separately. Compared with the prior art in which the iron plate is exposed externally and installed in one piece with the pull bolt assembly, the iron plate is not easily damaged by warping and thus causing the magnetic lock to fail;

[0017] 2) After the iron plate and the iron core are attracted together, they are in a fixed state. Under the action of external force, only the pull bolt component moves alone. Compared with the prior art in which the iron plate and the iron core are attracted together, the iron plate and the iron core move up and down synchronously under the action of external force, which avoids many unfavorable factors and makes the product safer;

[0018] 3) In the magnetic lock of the utility model, the iron core is energized only when the bolt puller reaches a certain position and triggers the button switch. Compared with the prior art in which the iron core is always energized waiting for attraction, the magnetic lock of the utility model works more accurately and saves energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of the magnetic lock in a non-engaged state according to an embodiment of the utility model;

[0020] Figure 2 This is a schematic diagram of the structure of the magnetic lock in a normal attracted state according to an embodiment of the utility model;

[0021] Figure 3 It is a structural schematic diagram of a magnetic lock according to an embodiment of the utility model being stretched by an external force in a closed state;

[0022] Figure 4 It is a structural schematic diagram of an existing magnetic lock in a closed state;

[0023] Figure 5 The present invention is a schematic diagram of the structure of an existing magnetic lock being stretched by an external force in a closed state. DETAILED DESCRIPTION

[0024] In order to better understand the purpose, structure and function of the utility model, the utility model is further described in detail below in conjunction with the accompanying drawings.

[0025] Figures 1 to 3 FIG. 1 shows the structure of a magnetic lock 100 according to an embodiment of the present utility model. Figure 1As shown, the magnetic lock 100 of the utility model embodiment may include: a lock body assembly 2 and a bolt component 1 for inserting into the lock body assembly 2 for locking, the lock body assembly 2 may include a shell 21 with a top opening, an electric trigger assembly 20 and a brake ring assembly 30 arranged in sequence from bottom to top in the shell 21, an iron plate 4 sleeved and fixed on the brake ring assembly 30, and an iron 5 sleeved on the electric trigger assembly 20 and fixed to the inner wall of the shell 21, a gap is formed between the iron plate 4 and the iron core 5 when they are not attracted, the lock body assembly 2 is constructed so that when the bolt component 1 moves to contact the upper end surface of the brake ring 30, it can push the brake ring assembly 30 and the iron plate 4 to move downward together until the iron plate 4 is close to the surface of the iron core 5, and at the same time, the bolt component 1 synchronously pushes the electric trigger assembly 20 to energize the iron core 5, so that the iron plate 4 and the iron core 5 are attracted.

[0026] In the magnetic lock 100 of the present invention, the iron plate 4 is built into the housing 21 of the lock body assembly 2, and the iron plate 4 and the pull bolt component 1 are installed separately, which is similar to the embodiment of the present invention. Figure 4 and Figure 5 The iron plate 11' in the existing magnetic lock 100' is completely different from the iron plate 11' in the conventional magnetic lock 100' shown in the figure. The iron plate 4 in the magnetic lock 100 of the present invention is not easily damaged by warping and thus makes the magnetic lock 100 ineffective. In addition, the iron plate 4 and the iron core 5 in the magnetic lock 100 of the present invention are in a fixed state after being attracted. Only the pull bolt component 1 moves alone under the action of external force, which avoids many unfavorable factors and makes the product safer. Figure 4 and Figure 5 The iron plate 11' and the iron core 21' in the existing magnetic lock 100' shown are sucked together. Under the action of external force, the iron plate 11' and the iron core 21' move up and down synchronously. Due to the deformation of the door, unreasonable installation and other unfavorable factors, the direction of the external force changes, and when there is a large vibration, shaking and distortion, the suction force of the iron plate 11' and the iron core 21' is limited, and it is easy to disengage, causing the lock to fail such as unlocking. In addition, in the magnetic lock 100 of the embodiment of the utility model, the iron core 5 is energized only when the pull bolt component 1 reaches a certain position and triggers the electric trigger component 20. Its operation is more accurate and energy-saving. Figure 4 and Figure 5 In the conventional magnetic lock 100 ′ shown, the iron core 21 ′ is always energized and waiting to be attracted, which is more energy-consuming.

[0027] In such Figure 1In the preferred embodiment shown, the electric trigger assembly 20 may include a circuit board 22, a button switch 23, a button spring 24 and a button 25 arranged in sequence from bottom to top, the button spring 24 is connected between the button switch 23 and the button 25, and the bolt pull component 1 pushes the button 25 downward to compress the button spring 24 until the button 25 contacts the button switch 23, thereby triggering the circuit board 22 electrically connected to the button switch 23 to work. This arrangement enables the circuit board 22 to work to energize the iron core 5 only when the bolt pull component 1 pushes the button 25 to contact the button switch 23, and the operation is more accurate and energy-saving.

[0028] Furthermore, if Figure 1 As shown, the button 25 may include a housing for partially mounting the button spring 24, the housing including a main body and a boss 251 connected to one end of the main body close to the button switch 23, the button spring 24 is partially accommodated in the main body, and the boss 251 triggers the circuit board 22 electrically connected to the button switch 23 to work when it contacts the button switch 23. This arrangement makes the button spring 24 move more smoothly during the pressing process, and the boss 251 can increase its contact area with the button switch 23, which helps to improve the accuracy of the button 25 triggering the button switch 23.

[0029] In such Figure 1 In the preferred embodiment shown, the electric trigger assembly 20 may further include a sleeve 26 sleeved between the button 25 and the iron core 5, and the upper end of the sleeve 26 may be overlapped and fixed on the upper surface of the iron core 5. The arrangement of the sleeve 26 may provide stable support and guidance for the button 25, thereby making the process of pressing the button 25 more stable.

[0030] Furthermore, if Figure 1 As shown, a truncated platform 261 for abutting the main body may be formed on the inner wall of the sleeve 26, and the bottom surface of the truncated platform 261 abuts against the top surface of the boss 251. The setting of the truncated platform 261 can limit the upward and downward displacement of the button 25.

[0031] According to the utility model, in Figure 1 In the preferred embodiment shown, the brake ring assembly 30 may include a brake ring 31 and a plurality of steel balls 32 located on the same cross-section inside the brake ring 31. The iron plate 4 is fixed on the outer peripheral wall of the brake ring 31. The steel balls 32 abut against the top surface of the sleeve 26. When the bolt component 1 is inserted into the brake ring 31, the plurality of steel balls 32 are located on the outer periphery of the bolt component 1. The brake ring 31 is used to push each steel ball 32 toward the bolt component 1 to restrict the bolt component 1 from escaping from the brake ring 31, thereby achieving locking.

[0032] Furthermore, if Figure 1As shown, the bolt puller component 1 may include an abutting portion 11 for abutting against the upper end surface of the brake ring 31 and an inserting portion 12 connected to the abutting portion 11, and the inserting portion 12 may include a rod segment 121 connected to the abutting portion and a ball head 122 connected to the rod segment 121, the outer diameter of the ball head 122 is greater than the outer diameter of the rod segment 121, and the plurality of steel balls 32 are located at the outer periphery of the rod segment 121 when the inserting portion 12 is inserted into the brake ring 31. With this arrangement, after the brake ring 31 pushes each steel ball 32 toward the rod segment 121, the ball head 122 cannot escape from the plane defined by each steel ball 32.

[0033] In such Figure 1 In the preferred embodiment shown, the upper end surface of the brake ring 31 can be flush with the top opening of the housing 21. This arrangement enables the abutment portion 11 of the bolt member 1 to generate thrust on the brake ring when it moves to the top opening of the housing 21, which helps to improve the locking efficiency of the bolt member 1 and the lock body assembly 2.

[0034] Preferably, if Figure 1 As shown, the top opening of the housing 21 may be formed with a stopper 211 for stopping the iron plate 4. This arrangement helps to further improve the protection of the iron plate 4, thereby further effectively preventing the occurrence of a situation in which the magnetic lock 100 fails due to warping damage of the iron plate 4.

[0035] Furthermore, the bottom of the housing 21 is detachably connected with an end cap 27, and the circuit board 22 is detachably fixed on the end cap 27. This arrangement can facilitate the installation and removal of the circuit board 22, so as to facilitate the maintenance of the circuit board.

[0036] When the magnetic lock 100 of the utility model is in use, Figure 1 The structure diagram of the magnetic lock 100 of the embodiment of the utility model in the non-attractive state is shown, at this time, the bolt component 1 is not inserted into the lock body assembly 2, the button switch 23 is not triggered, the iron core 5 is not energized, and no attraction magnetic field is generated; Figure 2 As shown, it shows a schematic diagram of the structure of the magnetic lock 100 of the utility model embodiment in a normal suction state. When the bolt component 1 moves downward, the bolt component 1 contacts the upper end surface of the brake ring 31, pushing the brake ring 31 and the iron plate 4 to move downward as a whole, until the iron plate 4 is pushed close to the surface of the iron core 5. At the same time, the bolt component 1 also synchronously pushes the button 25 to move downward, and the button switch 23 is triggered to be energized by compressing the button spring 24. At this time, the iron plate 4 and the iron core 5 are suctioned, and at the same time, the brake ring 31 pushes the steel ball 32 toward the inside of the center hole to restrict the bolt component 1 from being pulled out and locked; Figure 3The schematic diagram of the structure of the magnetic lock of the fundamental utility model embodiment is shown when it is stretched by different external forces F in the attracted state. When the bolt component 1 is subjected to the external force F, it will move upward by a certain displacement. Since the brake ring 31 restricts the movement of the steel ball 32, the ball head 122 of the bolt component 1 will not be able to be pulled out at this time, so the door cannot be opened (that is, it is still in the locked state).

[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it; although the utility model has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the above embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model, and they should all be included in the scope of the claims and description of the utility model. In particular, as long as there is no structural conflict, the various technical features mentioned in each embodiment can be combined in any way. The utility model is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A magnetic lock, characterized in that: include: A lock body assembly and a bolt pull component for inserting into the lock body assembly for locking, the lock body assembly includes a shell with a top opening, an electric trigger assembly and a brake ring assembly arranged in sequence from bottom to top in the shell, an iron plate sleeved and fixed on the brake ring assembly, and an iron core sleeved on the electric trigger assembly and fixed to the inner wall of the shell, a gap is formed between the iron plate and the iron core when not attracted, the lock body assembly is constructed so that when the bolt pull component moves to contact the upper end surface of the brake ring assembly, it can push the brake ring assembly and the iron plate to move downward together until the iron plate is close to the surface of the iron core, and at the same time, the bolt pull component synchronously pushes the electric trigger assembly to energize the iron core, so that the iron plate and the iron core are attracted.

2. The magnetic lock according to claim 1, characterized in that: The electric trigger component includes a circuit board, a button switch, a button spring and a button arranged in sequence from bottom to top, the button spring is connected between the button switch and the button, and the pull bolt component pushes the button downward to compress the button spring until the button contacts the button switch, thereby triggering the circuit board electrically connected to the button switch to work.

3. The magnetic lock according to claim 2, characterized in that: The button includes a shell for partially installing the button spring, the shell includes a main body and a boss connected to one end of the main body close to the button switch, and the boss triggers the circuit board electrically connected to the button switch to work when it contacts the button switch.

4. The magnetic lock according to claim 3, characterized in that: The electric trigger assembly also includes a sleeve sleeved between the button and the iron core, and the upper end of the sleeve is overlapped and fixed on the upper surface of the iron core.

5. The magnetic lock according to claim 4, characterized in that: A truncated cone for abutting the main body is formed on the inner wall of the sleeve, and the bottom surface of the truncated cone abuts against the top surface of the boss.

6. The magnetic lock according to claim 4, characterized in that: The brake ring assembly includes a brake ring and a plurality of steel balls located on the same cross-section inside the brake ring. The iron plate is fixed on the outer peripheral wall of the brake ring. The steel balls abut against the sleeve. When the bolt pull component is inserted into the brake ring, the plurality of steel balls are located on the outer periphery of the bolt pull component. The brake ring is used to push each of the steel balls toward the bolt pull component to restrict the bolt pull component from falling out of the brake ring.

7. The magnetic lock according to claim 6, characterized in that: The bolt pulling component includes an abutting portion for abutting against the upper end surface of the brake ring and an insertion portion connected to the abutting portion, the insertion portion includes a rod segment connected to the abutting portion and a ball head connected to the rod segment, the outer diameter of the ball head is larger than the outer diameter of the rod segment, and the plurality of steel balls are located on the outer periphery of the rod segment when the insertion portion is inserted into the brake ring.

8. The magnetic lock according to claim 6, characterized in that: The upper end surface of the brake ring is flush with the top opening of the shell.

9. The magnetic lock according to claim 8, characterized in that: A stop platform for stopping the iron plate is formed inwardly at the top opening of the shell.

10. The magnetic lock according to any one of claims 2 to 7, characterized in that: The bottom of the shell is detachably connected with an end cover, and the circuit board is detachably fixed on the end cover.

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