Electromagnetic lock, photovoltaic cleaning robot and electromagnetic lock fixing frame
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- LANGFANG SOL BRIGHT NEW ENERGY TECHNOLOGY CO LTD
- Filing Date
- 2025-09-12
- Publication Date
- 2026-08-07
AI Technical Summary
然而，这类电磁锁存在吸合力不均、锁舌运动不稳定的问题，尤其在锁舌和电磁铁芯接触不充分时，初始吸力较小，可能导致锁舌解锁不及时或锁定不可靠
由于该电磁锁包括平板电磁铁，和一端与电磁铁芯接触、并可在电磁吸力的作用下转动，另一端与锁舌组件连接的锁推板；当平板电磁铁通电时，锁推板在电磁吸力作用下产生转动，从而带动锁舌组件移动，使锁舌迅速退入锁壳。由于锁推板与电磁铁芯始终保持接触，锁推板在通电初期即产生一定的初始吸力，使锁舌能够快速、可靠地完成解锁动作，从而提高电磁锁的响应速度和使用可靠性。
Smart Images
Figure CN224606224U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of photovoltaic cleaning robot technology, and in particular to an electromagnetic lock, a photovoltaic cleaning robot and an electromagnetic lock fixing frame. Background Technology
[0002] Existing robotic vacuum cleaners typically require a self-locking mechanism to prevent unintended movement during shutdown or charging. Current self-locking mechanisms mostly employ motor-driven solutions, which are structurally complex, pose waterproof and dustproof risks, and have high maintenance costs.
[0003] To address this, some technical solutions attempt to replace motor-driven self-locking devices with electromagnetic locks. For example, an electromagnetic lock can be installed at the stopping position, and the extension and retraction of the lock head can be controlled by an electromagnet to achieve the robot's positioning and locking at the stopping position. However, these electromagnetic locks suffer from uneven attraction force and unstable bolt movement. In particular, when the bolt and the electromagnet core do not make sufficient contact, the initial attraction force is small, which may lead to untimely bolt unlocking or unreliable locking.
[0004] Therefore, a fast-response, highly reliable electromagnetic lock, photovoltaic cleaning robot, and electromagnetic lock mounting bracket need to be designed. Utility Model Content
[0005] The purpose of this utility model is to address the defects and shortcomings of the existing technology by providing an electromagnetic lock, a photovoltaic cleaning robot, and an electromagnetic lock mounting bracket, which solves at least one of the above-mentioned technical problems and has the advantages of fast response speed and high reliability.
[0006] To achieve the above objectives, this utility model provides an electromagnetic lock, comprising: Lock case; A flat electromagnet, disposed within the lock housing, has an electromagnet core; A latch assembly, including a latch that can extend into or out of the lock housing; An elastic element is disposed within the lock housing and located between the bolt assembly and the lock housing; A lock push plate is arranged inside the lock housing, with one end in contact with the electromagnet core and the other end connected to the lock tongue assembly; When the flat electromagnet is energized, the end of the lock push plate that is in contact with the electromagnet core rotates under the action of electromagnetic attraction, thereby pushing the lock tongue assembly to move, causing the lock tongue to retract into the lock case and unlocking the device.
[0007] Optionally, in the unlocked state, one end of the locking push plate that contacts the electromagnet core has a first included angle with the end face of the electromagnet core, and the other end of the locking push plate has a second included angle with the axis of the electromagnet core; When the flat electromagnet is energized, the locking push plate reduces both the first and second included angles under the action of electromagnetic attraction, thereby pushing the locking tongue assembly to move.
[0008] Optionally, the locking push plate is bent and includes a first vertical section, a first horizontal section, a second vertical section, and a second horizontal section connected in sequence; The first vertical segment extends upward from the end point that contacts the electromagnet core; The first horizontal segment is perpendicular to the first vertical segment; The second vertical segment is perpendicular to the first vertical segment and extends toward the electromagnet core; The second horizontal segment is perpendicular to the second vertical segment and extends away from the electromagnet core, and is connected to the latch assembly.
[0009] Optionally, the lock housing is further provided with a position detection sensor for detecting the descending position of the bolt to confirm the unlocked state.
[0010] Optionally, the position detection sensor is a proximity switch, which is disposed inside the lock housing and corresponds to the triggering component on the second transverse section of the lock push plate, and is used to detect whether the bolt has descended to the unlock position.
[0011] Optionally, it also includes a first limiting pad and a first limiting screw disposed within the lock housing; The first limiting pad is located on one end face of the electromagnet core of the flat electromagnet, and has a groove on the end face facing the electromagnet core. The groove is used for inserting one end of the locking push plate and limiting its lateral displacement. The first limiting screw passes through the lock housing, and its screw is located on the upper side of the first transverse section to limit the longitudinal displacement of the lock push plate.
[0012] Optionally, a locking bar sleeve is provided at the end of the lock housing away from the bolt; The latch assembly also includes a latch rod connected to the latch and slidably disposed in the latch rod sleeve, and a first limiting assembly fixedly mounted on the latch rod; The elastic element is a spring sleeved on the outer periphery of the locking rod, with one end abutting against the locking rod sleeve and the other end abutting against the first limiting component.
[0013] Optionally, the latch assembly further includes a latch sleeve disposed within the lock housing, the latch sleeve having a channel hole that matches the shape of the latch for the latch to pass through; The locking bar is provided with a second limiting component, which is located below the locking tongue sleeve; The second transverse section has a waist-shaped hole, which is fitted onto the locking rod and located between the first limiting component and the second limiting component.
[0014] Another aspect of this utility model provides a photovoltaic cleaning robot, including: a cleaning robot body, and an electromagnetic lock installed on the cleaning robot body as described above; the electromagnetic lock is electrically connected to the main control board of the cleaning robot body, so that under the control of the main control board, the locking tongue extends into the lock hole of the fixed frame at the stopping position to lock, or exits the lock hole to unlock.
[0015] In another aspect, this utility model provides an electromagnetic lock fixing bracket, comprising: The vertical frame is used for installation at the parking position; A lock frame, connected to the vertical frame, has a lock hole for engaging with the bolt of the electromagnetic lock as described above; The dust cover is detachably snapped onto the lock frame and covers the top of the keyhole, forming a lock cavity together with the lock frame to limit the range of motion of the bolt and prevent dust from entering.
[0016] Compared with the prior art, the advantages of this application are: This electromagnetic lock comprises a flat electromagnet and a push plate, one end of which contacts the electromagnet core and rotates under electromagnetic attraction, while the other end connects to the bolt assembly. When the flat electromagnet is energized, the push plate rotates under electromagnetic attraction, thereby moving the bolt assembly and causing the bolt to quickly retract into the lock housing. Because the push plate remains in contact with the electromagnet core, it generates an initial attraction force upon energization, enabling the bolt to quickly and reliably complete the unlocking action, thus improving the response speed and reliability of the electromagnetic lock. Attached Figure Description
[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.
[0018] Figure 1 This is a schematic diagram of the structure of the electromagnetic lock engaging with the electromagnetic lock fixing frame according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the electromagnetic lock engaging with the electromagnetic lock fixing frame in an embodiment of the present invention, wherein the dust cover and the lock frame are in a separate state; Figure 3 This is a schematic diagram of the electromagnetic lock according to an embodiment of the present invention; Figure 4 This is a front view schematic diagram of the electromagnetic lock part structure in an embodiment of this utility model; Figure 5 This is a partial exploded view of the electromagnetic lock according to an embodiment of the present invention.
[0019] Explanation of reference numerals in the attached figures 100-Electromagnetic lock; 1- Lock case; a- Access port; 2- Flat electromagnet; 21- Electromagnet core; 3-Lock tongue assembly; 31-Lock tongue; 32-Lock bar; 33-First limiting assembly; 331-First limiting ring; 332-First open retaining ring; 34-Lock tongue plastic sleeve; o2-Channel hole; 35-Second limiting assembly; 351-Second limiting ring; 352-Second open retaining ring; 4-Spring; 5- Locking push plate; α- First included angle; β- Second included angle; 51- First vertical section; 52- First horizontal section; 53- Second vertical section; 54- Second horizontal section; o3- Waist-shaped hole; 61-Proximity switch; 62-Triggering component; 7-First limiting pad; b-Groove; 8 - First limit screw; 9-Lock bar sleeve; 200 - Electromagnetic lock mounting bracket; 210 - Vertical frame; 220 - Lock frame; o1 - Lock hole; 230 - Dust cover; 300-Deflection axis. Detailed Implementation
[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0021] It should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," "back," "side," and "circumferential" used in this utility model to indicate the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used to distinguish multiple parts or structures with the same or similar structures, and do not indicate any special limitation on the arrangement order or connection relationship.
[0022] Please refer to Figures 1 to 5 This utility model provides an electromagnetic lock 100, applied to a photovoltaic cleaning robot (not shown in the figure), to prevent the photovoltaic cleaning robot from moving unexpectedly while in a parking position or during charging. The electromagnetic lock 100 includes: a lock shell 1, a flat electromagnet 2, a lock tongue assembly 3, an elastic element, and a lock push plate 5.
[0023] The lock housing 1 serves as the structural support for the electromagnetic lock 100, protecting the internal components. The lock housing 1 is installed on the photovoltaic cleaning robot.
[0024] A flat electromagnet 2 is disposed inside the lock housing 1 and has an electromagnet core 21. Specifically, in this embodiment, the flat electromagnet 2 is a circular electromagnet; however, in other embodiments, the flat electromagnet 2 can also be a square electromagnet, and no specific limitation is made here. It can be understood that the flat electromagnet 2 refers to an electromagnet with a flat shape used to generate electromagnetic attraction, which controls the movement of the lock tongue 31 by contacting the lock push plate 5.
[0025] The locking tongue assembly 3 includes a locking tongue 31 that can extend into or out of the locking housing 1. Understandably, the locking housing 1 has a channel opening a corresponding to the locking tongue 31 to facilitate the entry and exit of the locking tongue 31. The locking tongue 31 is used to cooperate with the lock hole o1 of the electromagnetic lock fixing bracket 200 on the stop position to lock the cleaning robot.
[0026] The elastic element is located inside the lock housing 1 and between the latch assembly 3 and the lock housing 1. When the flat electromagnet 2 is de-energized, the elastic element pushes the latch 31 out of the lock housing 1, so that the latch 31 is firmly locked into the lock hole o1 in the stop position, ensuring the reliability of the self-locking function.
[0027] The lock push plate 5 is arranged inside the lock housing 1, with one end in contact with the electromagnet core 21 and the other end connected to the bolt assembly 3. When the flat electromagnet 2 is energized, the end of the lock push plate 5 in contact with the electromagnet core 21 rotates under the action of electromagnetic attraction, thereby pushing the bolt assembly 3 to move, causing the bolt to retract into the lock housing 1, thus unlocking the lock.
[0028] Since the lock push plate 5 and the electromagnet core 21 are always in contact, the lock push plate 5 generates a certain initial attraction force when it is energized, which enables the lock tongue 31 to complete the unlocking action quickly and reliably, thereby improving the response speed and reliability of the electromagnetic lock 100.
[0029] Alternatively, please refer to Figure 4 In this embodiment, in the unlocked state, the end of the locking push plate 5 that contacts the electromagnet core 21 has a first included angle α with the end face of the electromagnet core 21, and the other end of the locking push plate 5 has a second included angle β with the axis of the electromagnet core 21. When the flat electromagnet 2 is energized, the locking push plate 5 reduces both the first included angle α and the second included angle β under the action of electromagnetic attraction, thereby pushing the latch assembly 3 to move. In this way, the locking push plate 5 can generate an initial attraction force at the beginning of energization, thereby realizing fast, reliable and stable unlocking of the latch 31.
[0030] Alternatively, please refer to Figure 4 and Figure 5 In this embodiment, the locking push plate 5 is bent and includes a first vertical segment 51, a first horizontal segment 52, a second vertical segment 53, and a second horizontal segment 54 connected in sequence. The first vertical segment 51 extends upward from the end point in contact with the electromagnet core 21. The first horizontal segment 52 is perpendicular to the first vertical segment 51. The second vertical segment 53 is perpendicular to the first vertical segment 51 and extends towards the electromagnet core 21. The second horizontal segment 54 is perpendicular to the second vertical segment 53 and extends away from the electromagnet core 21, and is connected to the latch assembly 3. This allows the flat electromagnet 2 and the latch assembly 3 to be arranged side-by-side within the lock housing 1. The bent locking push plate 5 is located between the electromagnet and the latch assembly 3, and is used to transmit the attraction force of the electromagnet to the latch assembly 3, allowing the latch 31 to smoothly retract into the lock housing 1 when the electromagnet is energized. The bent design of the lock push plate 5 not only ensures the uniform transmission of force and improves the stability and reliability of the movement of the lock tongue 31, but also optimizes the internal space layout of the electromagnetic lock 100, making the electromagnetic lock 100 structure more compact and reducing its volume.
[0031] To address the issue that traditional electromagnetic locks 100 cannot confirm whether the bolt 31 has truly retracted into the lock housing 1, and the unlocked state cannot be detected, optionally, please refer to... Figure 4 In this embodiment, the lock housing 1 is also equipped with a position detection sensor for detecting the descending position of the bolt 31 to confirm the unlocked state. This allows for real-time confirmation of whether the bolt 31 has returned to the unlocked position, improving the reliability of the unlocked state.
[0032] Alternatively, please refer to Figure 5In this embodiment, the position detection sensor is a proximity switch 61, which is disposed inside the lock housing 1 and corresponds to the triggering component 62 on the second transverse section 54 of the lock push plate 5. It is used to detect whether the bolt 31 has descended to the unlocked position. Understandably, when the flat electromagnet 2 is energized, the lock push plate 5 rotates under electromagnetic attraction, thereby causing the bolt assembly 3 to descend and retract into the lock housing 1. At this time, the triggering component 62 approaches or enters the sensing area of the proximity switch 61, and the proximity switch 61 outputs a trigger signal, indicating that the bolt 31 has descended to the unlocked position. Of course, in other embodiments, the position detection sensor can also be a photoelectric sensor, a Hall sensor, or a microswitch; no specific limitation is made here.
[0033] To address the issue that the locking push plate 5 is prone to lateral or longitudinal displacement during operation, and that it cannot guarantee stable contact between one end of the locking push plate 5 and the end face of the electromagnet core 21, alternatively, please refer to... Figures 3 to 5 In this embodiment, the electromagnetic lock 100 further includes a first limiting pad 7 and a first limiting screw 8 disposed within the lock housing 1. The first limiting pad 7 is disposed on one end face of the electromagnet core 21 of the flat electromagnet 2, and has a groove b on the end face facing the electromagnet core 21. The groove b is used for inserting one end of the lock push plate 5 and limiting its lateral displacement. That is, the first limiting pad 7 can limit the lateral displacement of that end, so that the lock push plate 5 can remain stable in the horizontal direction.
[0034] The first limiting screw 8 passes through the lock housing, with its screw located on the upper side of the first transverse section 52, to limit the longitudinal displacement of the locking push plate 5; thus, the vertical movement of the locking push plate 5 is prevented. In this way, through the dual limiting effect of the limiting pad and the limiting screw, the locking push plate 5 always rotates along a predetermined trajectory during movement, and the end that contacts the end face of the electromagnet core 21 can reliably maintain an angled contact.
[0035] To ensure smoother operation and more reliable resetting of the latch assembly 3, optionally, please refer to... Figure 4 and Figure 5 In this embodiment, a locking bar sleeve 9 is provided at the end of the lock housing 1 away from the locking tongue 31. The locking tongue assembly 3 also includes a locking bar 32 and a first limiting assembly 33. The locking bar 32 is connected to the locking tongue 31 and is slidably disposed in the locking bar sleeve 9 to ensure that the linear movement of the locking tongue 31 has good guiding properties.
[0036] The first limiting component 33 is fixedly mounted on the locking rod 32. Specifically, the first limiting component 33 includes a first limiting ring 331 and a first open retaining ring 332 arranged sequentially from top to bottom. The first limiting ring 331 is sleeved on the outer periphery of the locking rod 32, and the first open retaining ring 332 is engaged on the outer periphery of the locking rod 32 and located below the first limiting ring 331 to prevent the first limiting ring 331 from shifting downwards. Of course, in some other embodiments, the first limiting component 33 may also be a retaining ring integrally formed on the locking rod 32 (not shown in the figure), and no specific limitation is made here.
[0037] The elastic element is a spring 4, which is sleeved on the outer periphery of the locking rod 32. One end of the spring 4 abuts against the locking rod sleeve 9, and the other end abuts against the first limiting ring 331.
[0038] When the flat electromagnet 2 is energized, the locking push plate 5 rotates under the action of electromagnetic attraction, and pushes the first limiting component 33 to drive the locking rod 32 to move downward along the locking rod sleeve 9, while compressing the spring 4; when the flat electromagnet 2 is de-energized, the spring 4 releases elastic potential energy, pushes the locking rod 32 to reset upward along the locking rod sleeve 9, thereby driving the locking tongue 31 to extend and achieve relocking.
[0039] To achieve stability in the extension and retraction of the latch 31, and to ensure compatibility between the relative movement of the push plate 5 and the locking rod 32, optionally, please refer to... Figure 4 and Figure 5 In this embodiment, the latch assembly 3 also includes a latch sleeve 34 disposed in the lock housing 1. The latch sleeve 34 has a channel hole o2 that matches the shape of the latch 31 so that the latch 31 can pass through. This provides guidance and support for the latch 31, thereby ensuring that the linear movement of the latch 31 is stable and reliable during the extension or retraction process.
[0040] A second limiting component 35 is provided on the locking rod 32, located below the locking tongue sleeve 34. Specifically, the second limiting component 35 includes a second limiting ring 351 and a second open retaining ring 352 arranged sequentially from top to bottom. The second limiting ring 351 is sleeved on the outer periphery of the locking rod 32, and the second open retaining ring 352 is engaged on the outer periphery of the locking rod 32 and located below the second limiting ring 351 to prevent the second limiting ring 351 from shifting downward. A waist-shaped hole o3 is provided on the second transverse section 54, which is sleeved on the locking rod 32 and located between the first limiting component 33 and the second limiting component 35. The waist-shaped hole o3 allows the locking push plate 5 to slide slightly and compensate for the angle relative to the locking rod 32 within a certain range when driving the locking rod 32, ensuring smoother and more reliable transmission between the locking push plate 5 and the locking rod 32.
[0041] Please refer to Figure 1 and Figure 2Another aspect of this utility model provides a photovoltaic cleaning robot, including: a cleaning robot body (not shown in the figure), and an electromagnetic lock 100 installed on the cleaning robot body as described above; the electromagnetic lock 100 is electrically connected to the main control board (not shown in the figure) of the cleaning robot body, so that under the control of the main control board, the locking tongue 31 extends into the lock hole o1 of the fixed frame at the stopping position to lock, or exits the lock hole o1 to unlock. Specifically, the cleaning robot body is prior art, so it will not be elaborated on here. In this embodiment, the electromagnetic lock 100 is installed on the deflection shaft 300 of the cleaning robot body. Of course, in other embodiments, the electromagnetic lock 100 can also be installed on the two side walking devices (not shown in the figure), and no specific limitation is made here. Since this photovoltaic cleaning robot has all the structure and connection relationship of the electromagnetic lock 100, it has all the advantages of the electromagnetic lock 100, which will not be described in detail here.
[0042] Please refer to Figure 1 and Figure 2 Another aspect of this utility model provides an electromagnetic lock mounting bracket 200, including: a vertical frame 210, a lock frame 220, and a dust cover 230. The vertical frame 210 is used for mounting on a stop position; specifically, it can be mounted on the stop position using screws (not shown in the figure). The lock frame 220 is connected to the vertical frame 210 and has a lock hole o1 for engaging with the latch 31 of the electromagnetic lock 100 as described above. The dust cover 230 is detachably snapped onto the lock frame 220 and covers the lock hole o1, forming a lock cavity together with the lock frame 220 to limit the range of motion of the latch 31 and prevent dust from entering. Since this electromagnetic lock mounting bracket 200 possesses all the structures and connections of the electromagnetic lock 100, it has all the advantages of the electromagnetic lock 100, which will not be elaborated further here.
[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the substance of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.
Claims
1. An electromagnetic lock, characterized in that, include: Lock case; A flat electromagnet, disposed within the lock housing, has an electromagnet core; A latch assembly, including a latch that can extend into or out of the lock housing; An elastic element is disposed within the lock housing and located between the bolt assembly and the lock housing; A lock push plate is arranged inside the lock housing, with one end in contact with the electromagnet core and the other end connected to the lock tongue assembly; When the flat electromagnet is energized, the end of the lock push plate that is in contact with the electromagnet core rotates under the action of electromagnetic attraction, thereby pushing the lock tongue assembly to move, causing the lock tongue to retract into the lock case and unlocking the device.
2. The electromagnetic lock as described in claim 1, characterized in that, In the unlocked state, the end of the locking push plate that contacts the electromagnet core has a first included angle with the end face of the electromagnet core, and the other end of the locking push plate has a second included angle with the axis of the electromagnet core. When the flat electromagnet is energized, the locking push plate reduces both the first and second included angles under the action of electromagnetic attraction, thereby pushing the locking tongue assembly to move.
3. The electromagnetic lock as described in claim 2, characterized in that, The locking push plate is bent and includes a first vertical section, a first horizontal section, a second vertical section, and a second horizontal section connected in sequence. The first vertical segment extends upward from the end point that contacts the electromagnet core; The first horizontal segment is perpendicular to the first vertical segment; The second vertical segment is perpendicular to the first vertical segment and extends toward the electromagnet core; The second horizontal segment is perpendicular to the second vertical segment and extends away from the electromagnet core, and is connected to the latch assembly.
4. The electromagnetic lock as described in claim 3, characterized in that, The lock housing is also equipped with a position detection sensor for detecting the descending position of the bolt to confirm the unlocked state.
5. The electromagnetic lock as described in claim 4, characterized in that, The position detection sensor is a proximity switch, which is located inside the lock housing and corresponds to the triggering component on the second transverse section of the lock push plate. It is used to detect whether the bolt has descended to the unlock position.
6. The electromagnetic lock as described in claim 3, characterized in that, It also includes a first limiting pad and a first limiting screw disposed within the lock housing; The first limiting pad is located on one end face of the electromagnet core of the flat electromagnet, and has a groove on the end face facing the electromagnet core. The groove is used for inserting one end of the locking push plate and limiting its lateral displacement. The first limiting screw passes through the lock housing, and its screw is located on the upper side of the first transverse section to limit the longitudinal displacement of the lock push plate.
7. The electromagnetic lock as described in claim 3, characterized in that, The lock housing is provided with a lock bar sleeve at the end away from the lock tongue; The latch assembly also includes a latch rod connected to the latch and slidably disposed in the latch rod sleeve, and a first limiting assembly fixedly mounted on the latch rod; The elastic element is a spring sleeved on the outer periphery of the locking rod, with one end abutting against the locking rod sleeve and the other end abutting against the first limiting component.
8. The electromagnetic lock as described in claim 7, characterized in that, The latch assembly also includes a latch sleeve disposed within the lock housing; The locking tongue sleeve has a channel hole that matches the shape of the locking tongue so that the locking tongue can pass through; The locking bar is provided with a second limiting component, which is located below the locking tongue sleeve; The second transverse section has a waist-shaped hole, which is fitted onto the locking rod and located between the first limiting component and the second limiting component.
9. A photovoltaic cleaning robot, characterized in that, include: The cleaning robot body, and the electromagnetic lock as described in any one of claims 1-8, installed on the cleaning robot body; the electromagnetic lock is electrically connected to the main control board of the cleaning robot body, so that under the control of the main control board, the locking tongue extends into the lock hole of the fixed frame at the stopping position to lock, or exits the lock hole to unlock.
10. An electromagnetic lock fixing bracket, characterized in that, include: The vertical frame is used for installation at the parking position; A lock frame, connected to the vertical frame, has a lock hole thereon, the lock hole being used to engage with the bolt of the electromagnetic lock as described in any one of claims 1-8; The dust cover is detachably snapped onto the lock frame and covers the top of the keyhole, forming a lock cavity together with the lock frame to limit the range of motion of the bolt and prevent dust from entering.