Electromagnetic lock with noise reduction effect
By setting an elastic barrier ring in the lock body of the electromagnetic lock, it absorbs impact energy and slows down the movement speed of the moving iron core, the problems of high noise and short service life when switching electromagnetic locks are solved, and the effect of noise reduction and service life is achieved.
Patent Information
- Application Number
- CN202421430611.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-20
- Publication Date
- 2025-04-18
- Estimated Expiration
- 2034-06-20
AI Technical Summary
Existing electromagnetic locks will produce greater noise when switching, affecting the health of the elderly and babies. Long-term use will cause wear of the lock tongue and shorten the service life.
An elastic barrier ring is installed in the lock body to change the direct impact between the moving iron core and the limit ring, so that the moving iron core first contacts the elastic barrier ring under the action of electromagnetic force, absorbs part of the impact energy and slows down the movement speed of the moving iron core, thereby reducing noise and reducing the friction between the moving iron core and the limit ring.
It effectively reduces the noise generated by electromagnetic locks when switching and extends the service life of electromagnetic locks.
Smart Images
Figure CN222772042U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of locks, and in particular to an electromagnetic lock with noise reduction effect. Background Art
[0002] Electromagnetic lock is a device that uses electromagnetic force to achieve locking function. Its working principle is to generate magnetic force through electric current to attract the lock body and the lock plate to combine, so as to achieve the purpose of locking. It is widely used in various fields due to its advantages of low energy consumption, simple structure, convenient installation and use, etc.
[0003] The electromagnetic lock in the prior art generates a large noise due to the instantaneous action when the magnetic force attracts the lock body and the lock plate to combine. When used on home protective doors, it is easy to scare the elderly with poor heart function and underdeveloped infants. In addition, since the internal structure of the electromagnetic lock is hard, long-term switching operation will cause the lock tongue inside the electromagnetic lock to wear due to friction and impact between the lock body, thereby greatly reducing the service life of the electromagnetic lock. Utility Model Content
[0004] In order to reduce the noise generated when the electromagnetic lock is switched, the present application provides an electromagnetic lock with noise reduction effect.
[0005] The electromagnetic lock with noise reduction effect provided in this application adopts the following technical solution:
[0006] An electromagnetic lock with noise reduction effect comprises a lock body, a lock core and an electromagnetic assembly are arranged in the lock body, a moving iron core is sleeved on the lock core, and a channel for the moving iron core to slide is coaxially opened in the lock body, the electromagnetic assembly drives the lock core to slide in the channel by magnetic force when power is turned on, and drives the lock body to switch between a locked state and an unlocked state, both ends of the channel are matched with the moving iron core and are provided with limit rings for contacting the moving iron core, both ends of the lock core are slidably passed through the limit rings and extend out of the lock body, and an elastic retaining ring is arranged in the channel between the limit ring and the moving iron core, when the moving iron core slides in the channel toward the limit ring, it first contacts the elastic retaining ring and then contacts the corresponding limit ring.
[0007] By adopting the above technical solution, an elastic retaining ring is arranged in the lock body, which changes the situation in which the moving iron core directly collides with the limit ring in the traditional electromagnetic lock. When the moving iron core moves toward the limit ring under the action of the electromagnetic force, it first contacts the elastic retaining ring. The elastic retaining ring can absorb part of the impact energy and slow down the moving speed of the moving iron core, thereby reducing the generation of impact noise; at the same time, the elastic retaining ring can also reduce the direct friction between the moving iron core and the limit ring, further extending the service life of the electromagnetic lock.
[0008] Optionally, the electromagnetic assembly includes a static iron core and an electric plug electrically connected to the static iron core, the static iron core is coaxially located on the outer ring of the lock core and fixedly arranged in the lock body, and the electric plug is located on the top side wall of the lock body.
[0009] By adopting the above technical solution, an electric plug is used to connect to an external power source. When power is turned on, the static iron core generates magnetic force, thereby changing the magnetic field, and then driving the moving iron core to slide with the lock core in the channel, so as to realize the state switching of the lock body between the locked state and the unlocked state.
[0010] Optionally, both ends of the lock body near the channel are coaxially connected to each other and have sinkers, the elastic retaining ring includes a connecting ring inserted in the sinker and an elastic top strip arranged on the connecting ring toward the inner side wall of the channel for supporting the moving iron core, and there are several elastic top strips distributed along the circumference of the inner side of the connecting ring, and the end of each elastic top strip is bent in a direction away from the lock core. When the moving iron core slides in the channel toward the limit ring, the moving iron core abuts against the bent side walls of several elastic top strips.
[0011] By adopting the above technical solution, the elastic top strip in the elastic retaining ring structure combined with the support block can be elastically deformed to absorb the impact energy, while the support block provides a stable support force to ensure the stability and smoothness of the moving iron core during the sliding process. This structure not only further reduces noise, but also effectively reduces the wear inside the lock body and prolongs the service life of the electromagnetic lock.
[0012] Optionally, the elastic retaining ring also includes a support block, which is arranged on the inner side wall of the connecting ring facing the channel, and is distributed circumferentially along the inner side of the connecting ring. The support blocks are staggered with the elastic top strips, and the support blocks are supported on the limit ring away from the side wall of the connecting ring.
[0013] By adopting the above technical solution, the support block is always arranged to support the limit ring, so that the elastic retaining ring can remain stable when blocking the sliding moving iron core. The setting of the support block not only enhances the stability of the retaining ring, but also effectively disperses the force generated by the impact of the moving iron core, thereby further reducing noise.
[0014] Optionally, each of the elastic top strips is provided with a supporting protrusion corresponding to the edge bend of the limiting ring, and the inner bend of the supporting protrusion is fitted on the edge of the limiting ring.
[0015] By adopting the above technical solution, the inner bending part of the top support protrusion will be fitted on the edge of the limit ring, thereby providing more buffer space when the moving iron core collides.
[0016] Optionally, a shock-absorbing ring is provided in the lock body, which covers the connecting ring and the inner wall of the lock body, and the shock-absorbing ring is detachably connected to the inner wall of the lock body.
[0017] By adopting the above technical solution, the setting of the shock-absorbing ring not only limits and fixes the elastic retaining ring inserted in the sink, but also absorbs and disperses the vibration energy generated when the moving iron core slides when the moving iron core hits the elastic retaining ring. The detachable setting of the shock-absorbing ring facilitates the replacement of the damaged elastic retaining ring.
[0018] Optionally, plug-in grooves are provided on the side walls of the channel near both ends thereof, and the elastic retaining ring includes a fixed ring inserted in the plug-in groove and an elastic retaining strip arranged on the fixed ring for supporting the moving iron core, and there are multiple elastic retaining strips distributed along the circumference of the fixed ring, and a placement through hole is provided on the fixed ring corresponding to each elastic retaining strip, and the elastic retaining strip is arranged in the corresponding placement through hole.
[0019] By adopting the above technical solution, when the electromagnetic lock needs to minimize the modification of the channel, the elastic retaining ring composed of the fixed ring and the elastic retaining strip only needs to occupy a very small channel space to absorb and disperse the energy generated by the impact of the moving iron core, thereby reducing the impact noise and reducing the internal wear of the lock body.
[0020] Optionally, the fixing ring is formed by bending the fixing strip to fit the inner wall of the plug-in slot.
[0021] By adopting the above technical solution, the fixing ring is formed by bending the fixing strip in cooperation with the inner wall of the plug-in slot, which simplifies the manufacturing process and ensures the stability of the elastic retaining ring.
[0022] In summary, the present application includes at least one of the following beneficial technical effects:
[0023] 1. The elastic retaining ring is arranged in the lock body to change the situation in which the moving iron core directly collides with the limit ring in the traditional electromagnetic lock. When the moving iron core moves toward the limit ring under the action of the electromagnetic force, it first contacts the elastic retaining ring. The elastic retaining ring can absorb part of the impact energy and slow down the moving speed of the moving iron core, thereby reducing the impact noise. At the same time, the elastic retaining ring can also reduce the direct friction between the moving iron core and the limit ring, further extending the service life of the electromagnetic lock;
[0024] 2. Use an electric plug to connect to an external power source. When powered on, the static iron core generates magnetic force, thereby changing the magnetic field, and then driving the moving iron core to slide with the lock core in the channel to achieve the state switching of the lock body between the locked state and the unlocked state;
[0025] 3. In the elastic ring structure that combines the elastic top strip and the support block, the elastic top strip can be elastically deformed to absorb the impact energy, while the support block provides a stable support force to ensure the stability and smoothness of the moving iron core during the sliding process. This structure not only further reduces noise, but also effectively reduces the wear inside the lock body and extends the service life of the electromagnetic lock. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] Figure 1 It is a cross-sectional view of the overall structure of Example 1 of the present application.
[0027] Figure 2 It is a schematic diagram of the structure of the elastic retaining ring in Example 1 of the present application.
[0028] Figure 3 It is a cross-sectional view of the overall structure of Example 2 of the present application.
[0029] Figure 4 It is a schematic diagram of the structure of the elastic retaining ring in Example 2 of the present application.
[0030] Description of reference numerals:
[0031] 1. Lock body; 11. Channel; 12. Sink; 13. Plug-in slot; 2. Lock core; 3. Electromagnetic assembly; 31. Static iron core; 32. Electric plug; 4. Moving iron core; 5. Limiting ring; 6. Elastic retaining ring; 61. Connecting ring; 62. Elastic top strip; 621. Top support protrusion; 63. Support block; 64. Fixed ring; 641. Placement through hole; 65. Elastic back strip; 7. Shock-absorbing ring; 71. Countersunk bolt. DETAILED DESCRIPTION
[0032] The following is combined with Figure 1-4 This application is described in further detail.
[0033] The embodiment of the present application discloses an electromagnetic lock with noise reduction effect.
[0034] Example 1
[0035] Reference Figure 1 and Figure 2 An electromagnetic lock with noise reduction effect includes a lock body 1, in which a lock core 2 and an electromagnetic assembly 3 are arranged. A channel 11 for sliding a moving iron core 4 is coaxially opened in the lock body 1, and the moving iron core 4 is fixedly sleeved on the lock core 2, and both ends of the channel 11 are fixedly provided with a limit ring 5 matching the moving iron core 4, and both ends of the lock core 2 slide through the limit ring 5 and extend out of the lock body 1. An elastic retaining ring 6 is arranged between the limit ring 5 and the moving iron core 4 in the channel 11.
[0036] Reference Figure 1When the electromagnetic component 3 is energized, it drives the lock core 2 to slide in the channel 11 through magnetic force. In order to reduce noise, when the moving iron core 4 slides in the channel 11 toward the limit ring 5, it first contacts the elastic retaining ring 6 and then contacts the corresponding limit ring 5, thereby driving the lock body 1 to switch between the locked state and the unlocked state.
[0037] Reference Figure 1 The electromagnetic assembly 3 includes a static iron core 31 and an electric plug 32. The static iron core 31 is electrically connected to the electric plug 32. The static iron core 31 is coaxially located on the outer ring of the lock core 2 and is fixedly set in the lock body 1, while the electric plug 32 is fixedly set on the top side wall of the lock body 1.
[0038] Reference Figure 1 and Figure 2 Both ends of the lock body 1 near the channel 11 are coaxially connected and provided with a sink 12. The elastic retaining ring 6 includes a connecting ring 61, an elastic top strip 62 and a support block 63. The connecting ring 61 is correspondingly inserted into the sink 12, and a shock-absorbing ring 7 is provided in the lock body 1 to cover the connecting ring 61 and the inner wall of the lock body 1. A plurality of countersunk bolts 71 are arranged on the outer ring top wall of the shock-absorbing ring 7. The shock-absorbing ring 7 is installed on the inner wall of the lock body 1 through the countersunk bolts 71.
[0039] Reference Figure 1 and Figure 2 There are several elastic top strips 62 distributed along the circumference of the inner side of the connecting ring 61. In this embodiment, four are taken as an example. The end of each elastic top strip 62 close to the inner ring side wall of the connecting ring 61 is integrally formed on the connecting ring 61, and the end of each elastic top strip 62 away from the connecting ring 61 is bent in the direction away from the lock cylinder 2. When the moving iron core 4 slides in the channel 11 and toward the limit ring 5, it first contacts the four bent side walls of the elastic top strips 62.
[0040] Reference Figure 1 and Figure 2 Each elastic top strip 62 is bent with a top support protrusion 621 corresponding to the edge of the limiting ring 5. The inner bending parts of these top support protrusions 621 are matched and sleeved on the edge of the limiting ring 5, further absorbing the impact energy.
[0041] Reference Figure 1 and Figure 2 The end of the support block 63 facing the connecting ring 61 is integrally formed on the inner ring side wall of the connecting ring 61, and the end side wall away from the connecting ring 61 cooperates with the outer ring side wall of the limiting ring 5 and is arranged to support the limiting ring 5. There are four support blocks 63 distributed along the circumferential direction of the inner side of the connecting ring 61, and the four support blocks 63 and the four elastic top strips 62 are staggered.
[0042] The implementation principle of an electromagnetic lock with a noise reduction effect in an embodiment of the present application is as follows: the electric plug 32 is connected to an external power supply, and when power is on, the lock core 2 is driven to slide in the channel 11 by magnetic force. When the moving iron core 4 slides in the channel 11 toward the limit ring 5, it first contacts the side wall of the bent elastic top strip 62, and then contacts the corresponding limit ring 5 under the clamping friction of the top support protrusion 621, thereby driving the lock body 1 to switch between a locked state and an unlocked state.
[0043] Example 2
[0044] Reference Figure 3 and Figure 4 The difference between this embodiment and embodiment 1 lies in the structural design of the elastic retaining ring 6.
[0045] Reference Figure 3 and Figure 4 , the side walls of the channel 11 near both ends thereof are provided with plug-in grooves 13, the elastic retaining ring 6 includes a fixed ring 64 and an elastic resisting strip 65, the fixed ring 64 is formed by bending a fixed long strip to match the inner wall size of the plug-in groove 13, and is glued to the plug-in groove 13, a plurality of placement through holes 641 are provided on the fixed ring 64 along its circumference, and four are taken as an example in this embodiment, one elastic resisting strip 65 is provided in each placement through hole 641, and the elastic resisting strip 65 is located in the central position of the corresponding placement through hole 641, and the ends of the plurality of elastic resisting strips 65 close to the moving iron core 4 are integrally formed on the inner wall of the fixed ring 64 at the placement through hole 641.
[0046] Reference Figure 3 and Figure 4 The end of the elastic abutment strip 65 away from the movable iron core 4 is bent toward the lock core 2. When the movable iron core 4 moves toward the limiting ring 5 under the action of the electromagnetic force, the movable iron core 4 first abuts against the bent side wall of the elastic abutment strip 65, and then contacts the side wall of the limiting ring 5.
[0047] The implementation principle of Example 2 is that the fixing ring 64 is formed by bending the fixed long strip to fit the inner wall of the plug-in slot 13, which simplifies the production process and ensures a close fit between the fixing ring 64 and the plug-in slot 13, thereby improving the stability of the overall structure and achieving a buffering and noise reduction effect when the moving iron core 4 slides.
[0048] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.
Claims
1. An electromagnetic lock with noise reduction effect, characterized in that: The invention comprises a lock body (1), wherein a lock core (2) and an electromagnetic assembly (3) are arranged in the lock body (1), a moving iron core (4) is sleeved on the lock core (2), and a channel (11) for the moving iron core (4) to slide is coaxially provided in the lock body (1), and the electromagnetic assembly (3) drives the lock core (2) to slide in the channel (11) by magnetic force when power is supplied, and drives the lock body (1) to switch between a locked state and an unlocked state, and both ends of the channel (11) are matched. The movable iron core (4) is provided with a limiting ring (5) for contacting the movable iron core (4); both ends of the lock core (2) slide through the limiting rings (5) and extend out of the lock body (1); and an elastic retaining ring (6) is provided between the limiting ring (5) and the movable iron core (4) in the channel (11); when the movable iron core (4) slides in the channel (11) toward the limiting ring (5), it first contacts the elastic retaining ring (6) and then contacts the corresponding limiting ring (5).
2. The electromagnetic lock with noise reduction effect according to claim 1, characterized in that: The electromagnetic assembly (3) comprises a static iron core (31) and an electric plug (32) electrically connected to the static iron core (31); the static iron core (31) is coaxially located on the outer ring of the lock core (2) and is fixedly arranged in the lock body (1); and the electric plug (32) is located on the top side wall of the lock body (1).
3. The electromagnetic lock with noise reduction effect according to claim 2, characterized in that: The lock body (1) has a sink (12) coaxially connected at both ends near the channel (11). The elastic retaining ring (6) includes a connecting ring (61) inserted into the sink (12) and an elastic top strip (62) arranged on the inner side wall of the connecting ring (61) facing the channel (11) for supporting the moving iron core (4). A plurality of elastic top strips (62) are distributed along the circumference of the inner side of the connecting ring (61). The end of each elastic top strip (62) is bent in a direction away from the lock core (2). When the moving iron core (4) slides in the channel (11) toward the limiting ring (5), the moving iron core (4) contacts the bent side walls of the plurality of elastic top strips (62).
4. The electromagnetic lock with noise reduction effect according to claim 3, characterized in that: The elastic retaining ring (6) further comprises a support block (63), which is arranged on the inner side wall of the connecting ring (61) facing the channel (11), and is distributed in a plurality along the circumference of the inner side of the connecting ring (61). The support blocks (63) and the elastic top strips (62) are distributed alternately, and the support blocks (63) are supported on the limiting ring (5) away from the side wall of the connecting ring (61).
5. The electromagnetic lock with noise reduction effect according to claim 3, characterized in that: Each of the elastic top strips (62) is provided with a top support protrusion (621) which is bent corresponding to the edge of the limiting ring (5), and the inner bending part of the top support protrusion (621) is fitted and sleeved on the edge of the limiting ring (5).
6. The electromagnetic lock with noise reduction effect according to claim 3, characterized in that: A shock-absorbing ring (7) is arranged inside the lock body (1) and covers the connecting ring (61) and the inner wall of the lock body (1). The shock-absorbing ring (7) is detachably connected to the inner wall of the lock body (1).
7. The electromagnetic lock with noise reduction effect according to claim 2, characterized in that: The side walls of the channel (11) near both ends thereof are provided with insertion grooves (13), and the elastic retaining ring (6) comprises a fixed ring (64) inserted into the insertion groove (13) and an elastic support bar (65) arranged on the fixed ring (64) for supporting the moving iron core (4), and a plurality of the elastic support bars (65) are distributed along the circumference of the fixed ring (64), and a placement through hole (641) is arranged on the fixed ring (64) corresponding to each elastic support bar (65), and the elastic support bar (65) is arranged in the corresponding placement through hole (641).
8. The electromagnetic lock with noise reduction effect according to claim 7, characterized in that: The fixing ring (64) is formed by bending the fixing strip to fit the inner wall of the inserting groove (13).