Electromagnetic starter
By setting a sealed connection between the transparent observation cover and the through hole on the electromagnetic starter, the difficulties of observation and operation under the closed structure are solved, convenient device status monitoring and operation are achieved, and user experience is improved.
Patent Information
- Application Number
- CN202422299480.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-19
- Publication Date
- 2025-07-22
- Estimated Expiration
- 2034-09-19
AI Technical Summary
The existing electromagnetic starter is designed as a closed structure to improve the protection level, which makes it impossible for users to intuitively observe the working status of the internal devices and is cumbersome to operate.
The transparent material observation cover is designed to form a sealed connection with the through holes, allowing the working status of the contactor and relay, and opening the observation cover for operation if necessary, combining the waterproof ring and snap structure to improve sealing.
It realizes that the contactors and relays are easy to observe and operate without affecting the protection capability, and improves the working safety and convenience of the electromagnetic starter.
Smart Images
Figure CN223141812U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of electrical equipment, and particularly to an electromagnetic starter. Background Art
[0002] An electromagnetic starter is a starter whose main part is usually composed of a contactor and a relay, and is equipped with a protective housing and start / stop buttons. It can be used to directly control the start, stop, and reverse of a motor, and can provide overload protection for the motor.
[0003] Existing electromagnetic starters on the market are usually designed as a closed structure to improve the protection level. The contactor and the relay are completely enclosed inside the housing, and users cannot directly see the working state of the contactor and the relay from the outside. And when users need to operate the relay, such as adjusting the current cam of the relay, or manually resetting and testing the relay, etc., they need to completely open the housing of the starter and then operate the relay. However, the opening process of the existing starter housing is rather cumbersome, affecting the user experience.
[0004] Therefore, there is an urgent need for an electromagnetic starter that is convenient to operate the relay, and at the same time, can ensure the protection level of the electromagnetic starter. Utility Model Content
[0005] The present application provides an electromagnetic starter to solve the problem that the protection level and convenient operation of the electromagnetic starter cannot be ensured simultaneously.
[0006] The present application provides an electromagnetic starter, including: a starter main body, on which there are a second device and a first device; a starter housing, covering the outside of the starter main body to protect the starter main body; the starter housing is provided with a first visible structure and a second visible structure, the first visible structure is correspondingly arranged at the position of the first device, and the second visible structure is correspondingly arranged at the position of the second device; the first visible structure includes a first through hole and a first observation cover cooperatively arranged with the first through hole, the first observation cover is made of a transparent material, the first through hole penetrates through the starter housing, and the first observation cover forms a sealed connection with the first through hole; the second visible structure includes a second through hole and a second observation cover cooperatively arranged with the second through hole, the second observation cover is made of a transparent material, the second through hole penetrates through the starter housing, and the second observation cover can be switched between an open state and a sealed state relative to the second through hole.
[0007] Through the above solution, the first observation cover in the first visible structure is made of a transparent material and can form a sealed connection with the first through hole, enabling convenient observation of the working state of the first device. Moreover, the sealed state can further meet the protection ability requirements of the electromagnetic starter. The second observation cover in the second visible structure is made of a transparent material and can cooperate with the second through hole to switch between the open state and the sealed state. This not only satisfies the convenient observation of the working state of the second device, and the sealed state can meet the protection ability requirements of the electromagnetic starter, but also allows the second observation cover to be opened when necessary for necessary operations such as manual reset and testing, improving the working safety and usability of the electromagnetic starter.
[0008] In a possible design, a first step is provided at the inner edge of the first through hole, a first groove is provided on the first step, a first waterproof ring is arranged in the first groove in a matching manner, the first observation cover is buckled on the first through hole, and the outer ring of the first observation cover abuts against the first waterproof ring to form a sealed connection between the first observation cover and the first through hole.
[0009] Through the above solution, the first waterproof ring is elastic, and when the first observation cover is buckled on the first through hole, it can compact the first waterproof ring more tightly, improving the sealing performance. It can better prevent dust and water from entering the starter main body through the first through hole, meeting the protection ability requirements of the electromagnetic starter.
[0010] In a possible design, the thickness of the first waterproof ring is greater than the depth of the first groove.
[0011] Through the above solution, the thickness of the first waterproof ring is greater than the depth of the first groove 121 to prevent the first observation cover from being blocked by the first step, thus avoiding the situation where the first waterproof ring cannot be tightly pressed when the first observation cover is buckled on the first through hole, thereby improving the sealing performance.
[0012] In a possible design, the first observation cover includes a first visible main body portion and a plurality of first buckle portions. The plurality of first buckle portions are fixed on the surface of the first visible main body portion close to the first device. The end of the first buckle portion away from the first visible main body portion is provided with a barb. When the first observation cover is buckled on the first through hole, the barb of the first buckle portion is clamped inside the starter housing, so that the first observation cover is fixed on the first through hole.
[0013] Through the above solution, a plurality of first buckle portions are provided on the first visible main body portion. When the first observation cover is buckled on the first through hole, the first buckle portions will be tightly buckled on the starter housing, preventing the first observation cover from falling off the starter housing.
[0014] In a possible design, the second through-hole penetrates through the starter housing. An installation wall protruding from the starter housing is provided around the second through-hole. The installation wall is hollow and communicates with the second through-hole. A groove is provided on the outer periphery of the installation wall, and one side of the groove is adjacent to the surface of the housing. A second waterproof ring is sleeved in the groove. The second observation cover is buckled on the installation wall, and the outer ring of the second observation cover abuts against the second waterproof ring so that the second observation cover forms a sealed state relative to the second through-hole.
[0015] Through the above solution, there is an installation wall protruding from the starter housing, which facilitates the installation of the second observation cover and the opening and buckling of the second observation cover. Moreover, the second waterproof ring has elasticity. When the second observation cover is buckled on the installation wall, the second waterproof ring can be compacted more tightly, improving the sealing performance. It can better prevent dust and water from entering the starter main body through the second through-hole, meeting the protection ability requirements of the electromagnetic starter.
[0016] In a possible design, the second observation cover includes a second visible main body part, a rotating shaft connecting part, and a plurality of second buckle parts. One end of the rotating shaft connecting part is fixedly connected to the second visible main body part, and the other end of the rotating shaft connecting part forms a rotatable connection with the starter housing. The plurality of second buckle parts are fixed on the lower surface of the second visible main body part. A barb is provided at the end of the second buckle part far from the second visible main body part. When the second observation cover is buckled on the installation wall, the barb of the second buckle part is clamped inside the starter housing so that the second visible main body part is buckled on the installation wall.
[0017] Through the above solution, the second observation cover is rotatably connected to the starter housing, preventing the second observation cover from being lost. Moreover, the plurality of second buckle parts are fixed on the lower surface of the second visible main body part, and a barb is provided at the end of the second buckle part far from the second visible main body part. The barb of the second buckle part can be clamped inside the starter housing, making the second observation cover more tightly buckled with the starter housing and ensuring the sealing effect of the electromagnetic starter.
[0018] In a possible design, at least one notch is further provided on the outer wall of the second visible main body part for an external tool to penetrate through the notch to pry up or open the second observation cover.
[0019] Through the above solution, during the working process, it is often necessary to open the second observation cover to perform operations inside. At least one notch is further provided on the outer wall of the second visible main body part. Users can insert tools such as screwdrivers into the notch, thereby prying up the second visible main body part and opening the second observation cover, facilitating users to perform operations on the interior of the product.
[0020] In a possible design, a threaded wall protruding from the starter housing is provided around the second through hole. The threaded wall is hollow and communicates with the second through hole. An external thread is provided on the outer wall of the threaded wall. The second observation cover includes a cover body and an annular peripheral wall provided on one side of the cover body. An internal thread is correspondingly provided on the inner side of the peripheral wall. The second observation cover can be screwed into the threaded wall to form a sealed state by screwing with the threaded wall.
[0021] Through the above solution, the second observation cover can be screwed into the threaded wall, and the internal thread in the cover body is screwed with the external thread of the threaded wall, so that the cover body is screwed with the threaded wall to form a sealed state. This not only satisfies the convenience of observing the working state of the second device, but also can rotate and unscrew the second observation cover when necessary for necessary operations such as manual reset and testing, improving the working safety and convenience of use of the electromagnetic starter.
[0022] In a possible design, the second observation cover further includes a hollow column. The hollow column is provided on the side of the cover body where the peripheral wall is provided and is located inside the peripheral wall. A third waterproof ring is provided on the outer wall of the hollow column, and the third waterproof ring is used to abut against the threaded wall.
[0023] Through the above solution, when the second observation cover is screwed into the threaded wall of the starter housing, the end face of the threaded wall will push the third waterproof ring into the interior of the second observation cover. When the second observation cover is tightened, the third waterproof ring will be flattened by the end faces of the second observation cover and the threaded wall, so that the third waterproof ring is in close contact with the second observation cover and the threaded wall, thereby preventing dust and water from entering the product interior through the second through hole and meeting the protection ability requirements of the electromagnetic starter. At the same time, after the third waterproof ring is flattened, it will generate an elastic force acting on the second observation cover and the threaded wall, which can make the internal thread in the second observation cover closely adhere to the external thread, increasing the friction of the thread and preventing the second observation cover from loosening.
[0024] In a possible design, a convex structure is provided on the outer side of the hollow column to prevent the third waterproof ring from falling off. A first convex rib is provided on the end face of the peripheral wall away from the cover body. The first convex rib is arranged along the radial direction of the peripheral wall. A second concave rib is provided at a position corresponding to the first convex rib on the outer periphery of the second through hole. The first convex rib and the second concave rib are engaged with each other.
[0025] Through the above solution, after the second observation cover is tightened on the threaded wall, the first convex rib and the second concave rib will be engaged with each other, which can prevent the second observation cover from loosening and improve the sealing performance of the electromagnetic starter.
[0026] The above description is only an overview of the technical solutions of the embodiments of the present application. In order to be able to understand the technical means of the embodiments of the present application more clearly, it can be implemented according to the content of the description. And in order to make the above and other purposes, features and advantages of the embodiments of the present application more obvious and understandable, the following specifically illustrates the specific embodiments of the present application. BRIEF DESCRIPTION OF THE DRAWINGS
[0027] Figure 1 Schematic diagram of an electromagnetic starter provided in an embodiment of the present application.
[0028] Figure 2 Cross-sectional views of a first visible structure and a second visible structure provided in an embodiment of the present application.
[0029] Figure 3 Schematic diagrams of a first through-hole and a second through-hole provided in an embodiment of the present application.
[0030] Figure 4 Schematic diagram of a first observation cover provided in an embodiment of the present application.
[0031] Figure 5 Schematic diagram of a second observation cover provided in an embodiment of the present application.
[0032] Figure 6 Schematic diagrams of a first waterproof ring and a second waterproof ring provided in an embodiment of the present application.
[0033] Figure 7 Effect diagrams of a first visible structure and a second visible structure provided in an embodiment of the present application.
[0034] Figure 8 Schematic diagram of an electromagnetic starter provided in another embodiment of the present application.
[0035] Figure 9 Cross-sectional view of a second visible structure provided in another embodiment of the present application.
[0036] Figure 10 Schematic diagrams of a first through-hole and a second through-hole provided in another embodiment of the present application.
[0037] Figure 11 Schematic diagram of a second observation cover provided in another embodiment of the present application.
[0038] Figure 12 Effect diagrams of a first visible structure and a second visible structure provided in another embodiment of the present application.
[0039] Reference numerals: 20, starter body; 10, starter housing; 30, screw; 100, first visible structure; 200, second visible structure; 11, first through hole; 12, second through hole; 120, first step; 121, first groove; 122, first waterproof ring; 110, first visible body; 111, first snap portion; 220, mounting wall; 222, second waterproof ring; 210, second visible body portion; 230, rotating shaft connection portion; 211, second snap portion; 221, second groove; 231, hollow shaft; 13, rotating shaft; 240, notch; 311, hollow column; 330, third waterproof ring; 320, threaded wall; 312, internal thread; 321, external thread; 322, protruding structure; 331, first rib; 332, second concave rib; 340, flat surface; 40, contact support 40; 31, indicating member; 32, current cam; 33, test button; 34, emergency stop button; 35, reset button. Detailed implementation manners
[0040] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Apparently, the described embodiments are some, but not all, of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without making creative efforts shall fall within the protection scope of the present application.
[0041] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs; the terms used herein in the description of the embodiments of the application are only for the purpose of describing specific embodiments, and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the description of the specification, claims, and drawings of this application are intended to cover non-exclusive inclusion.
[0042] Reference to "embodiment" herein means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the present application. The phrase "embodiment" appearing in various places in the specification is not necessarily all referring to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.
[0043] The term "and / or" herein is only a description of the associated relationship of the associated objects, indicating that there can be three relationships. For example, A and / or B can represent: the existence of A, the simultaneous existence of A and B, and the existence of B. In addition, the character " / " herein generally represents an "or" relationship between the associated objects before and after.
[0044] The directional terms used in the following description are all the directions shown in the figures, and do not limit the specific structure of the electromagnetic starter of the present application. For example, in the description of the present application, terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.
[0045] In addition, terms such as "first", "second", etc. in the specification and claims of the present application or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order, and may explicitly or implicitly include one or more of such features.
[0046] In the description of the present application, unless otherwise specified, the meaning of "a plurality" refers to two or more (including two). Similarly, "a plurality of groups" refers to two or more groups (including two groups).
[0047] In the description of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "mounted", "connected", and "coupled" should be understood in a broad sense. For example, the "connection" or "coupling" of a mechanical structure may refer to a physical connection. For example, a physical connection may be a fixed connection, such as a fixed connection through a spacer, such as a fixed connection through screws, bolts or other spacers; a physical connection may also be a detachable connection, such as a snap connection or a snap-fit connection; a physical connection may also be an integral connection, such as a welded, bonded or integrally formed connection. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to specific circumstances. The "connection" or "coupling" of a circuit structure may refer to not only a physical connection, but also an electrical connection or a signal connection. For example, it may be a direct connection, that is, a physical connection, or may be indirectly connected through at least one intermediate element, as long as the circuit is connected, and may also be the connection inside two elements; a signal connection may refer to not only a signal connection through a circuit, but also a signal connection through a media medium, such as radio waves. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to specific circumstances.
[0048] It has been found through research that in order to meet its protection requirements, the current electromagnetic starter is designed as a completely sealed structure, resulting in the inability to observe the working state of internal components in a timely manner, and the operation process is also cumbersome and inconvenient.
[0049] For the electromagnetic starter provided in this application, since the first visible structure is arranged corresponding to the contactor position and the second visible structure is arranged corresponding to the relay position. The first viewing cover in the first visible structure is made of a transparent material and can form a sealed connection with the first through hole, so that the working state of the contactor can be conveniently observed. Moreover, the sealed state can further meet the protection ability requirements of the electromagnetic starter. The second viewing cover in the second visible structure is made of a transparent material and can cooperate with the second through hole to switch between the open state and the sealed state. In this way, it not only meets the requirement of conveniently observing the working state of the relay, and the sealed state can meet the protection ability requirements of the electromagnetic starter, but also the second viewing cover can be opened when necessary to perform necessary operations such as manual reset and testing, improving the working safety and use convenience of the electromagnetic starter.
[0050] Please refer to Figure 1 or Figure 8 , in this embodiment, an electromagnetic starter is provided, including: a starter main body 20 and a starter housing 10. The starter main body 20 has a first device and a second device. The first device can be a contactor, and the second device can be a relay.
[0051] The starter housing 10 covers the outside of the starter main body 20 to protect the starter main body 20. The starter housing 10 can be fixedly covered on the starter main body 20 by screws 30 to play a protective role for each electrical component arranged on the starter main body 20. The starter main body 20 can be installed with components such as an AC contactor, a relay, a motor protector, and a signal lamp according to customer requirements. The starter main body 20, in cooperation with the starter housing 10 and the start and stop buttons, can be used to directly control the start, stop, and reverse of the motor and can provide overload protection for the motor.
[0052] The starter housing 10 is provided with a first visible structure 100 and a second visible structure 200.
[0053] The first visible structure 100 is arranged corresponding to the contactor position. The first visible structure 100 includes a first through hole 11 and a first viewing cover arranged in cooperation with the first through hole 11. The first viewing cover is made of a transparent material. The first through hole 11 penetrates the starter housing 10, and the first viewing cover forms a sealed connection with the first through hole 11. That is to say, the first through hole 11 is arranged corresponding to the contactor on the starter housing 10, so that its projection is directly opposite to the contactor, so that the working state of the contactor can be seen through the first through hole 11. Since the first viewing cover is sealed on the starter housing 10 and the first viewing cover is made of a transparent material, it is possible to observe the working state of the contactor without opening the starter housing 10.
[0054] Please refer to in combination with Figure 2 , Figure 3, Figure 4 and Figure 6 In this embodiment, a first step 120 is provided at the inner edge of the first through hole 11, a first groove 121 is provided on the first step 120, and a first waterproof ring 122 is provided in cooperation with the first groove 121. The first observation cover is buckled on the first through hole 11, and the outer ring of the first observation cover abuts against the first waterproof ring 122 so that the first observation cover and the first through hole 11 form a sealed connection.
[0055] In this embodiment, the thickness of the first waterproof ring 122 is greater than the depth of the first groove 121 to prevent the first observation cover from being blocked by the first step 120, thereby avoiding the situation that the first waterproof ring 122 cannot be tightly pressed when the first observation cover is buckled on the first through hole 11, and further improving the sealing performance.
[0056] The first waterproof ring 122 is elastic, and when the first observation cover is buckled on the first through hole 11, it can press the first waterproof ring 122 more tightly, improving the sealing performance. It can better prevent dust and water from entering the starter body 20 through the first through hole 11, meeting the protection ability requirements of the electromagnetic starter.
[0057] In this embodiment, the first observation cover includes a first visible main body 110 part and a plurality of first buckle parts 111. The plurality of first buckle parts 111 are fixed on the surface of the first visible main body 110 part close to the contactor. The end of the first buckle part 111 away from the first visible main body 110 part is provided with a barb. When the first observation cover is buckled on the first through hole 11, the barb of the first buckle part 111 is clamped inside the starter housing 10 so that the first observation cover is fixed on the first through hole 11.
[0058] Please refer to Figure 7 , when the first observation cover is fixed on the first through hole 11, the position of the contact support 40 in the contactor can be directly observed from the outside of the starter through the first observation cover, and the working state of the contactor can be judged accordingly.
[0059] It can be understood that the shape of the first through hole 11 can be rectangular, circular or other shapes. The shape of the first observation cover is set to match the shape of the first through hole 11. And since the first observation cover is buckled on the first through hole 11, specifically on the step inside the first through hole 11, when the first observation cover is fixed on the first through hole 11, the first observation cover is embedded in the first through hole 11. This is set based on the fact that during the use of the contactor, only the working state of the contactor needs to be observed and no operation is required on it. Therefore, once the first observation cover is buckled, it cannot be opened. When buckling, the first buckle portion 111 will be buckled tightly on the starter housing 10. Since the first waterproof ring 122 is made of an elastic material such as rubber, the first waterproof ring 122 will be flattened and closely attached to the first observation cover and the first groove 121, which can prevent dust and water from entering the product interior through the first through hole 11 and meet the protection ability requirements of the electromagnetic starter.
[0060] The second visual structure 200 is provided corresponding to the relay position. The second visual structure 200 includes a second through hole 12 and a second observation cover arranged in cooperation with the second through hole 12. The second observation cover is made of a transparent material. The second through hole 12 penetrates through the starter housing 10, and the second observation cover can be switched between an open state and a sealed state relative to the second through hole 12.
[0061] That is to say, the second through hole 12 is provided corresponding to the relay on the starter housing 10 so that its projection is directly opposite to the relay, thereby enabling the working state of the relay to be seen through the second through hole 12. Since the second observation cover can be opened or closed relative to the starter housing 10 and the second observation cover is made of a transparent material, the working state of the relay can be directly observed. And when it is necessary to adjust the current cam of the relay, or to manually reset or test the relay, etc., the second observation cover can be directly switched to the open state for operation without opening the entire starter housing 10. After the operation, the second observation cover is then covered on the second through hole to make it closed relative to the starter housing 10. Since generally, the second observation cover and the starter housing 10 are in a sealed state, it can meet the protection requirements of the electromagnetic starter. Even when it is necessary to open the starter housing 10 for operation, only the second observation cover needs to be opened. Therefore, the opening range of the starter housing is small, which is also more conducive to maintaining the protection effect of the electromagnetic starter.
[0062] Please refer to Figure 2 、 Figure 3 、 Figure 5 and Figure 6, in this embodiment, the second through hole 12 penetrates through the starter housing 10. An installation wall 220 protruding from the starter housing 10 is provided around the circumference of the second through hole 12. The installation wall 220 is hollow and communicates with the second through hole 12. A second groove 221 is provided on the outer periphery of the installation wall 220, and one side of the second groove 221 is adjacent to the surface of the housing. A second waterproof ring 222 is sleeved in the second groove 221. The second observation cover is buckled on the installation wall 220, and the outer ring of the second observation cover abuts against the second waterproof ring 222 so that the second observation cover forms a sealed state relative to the second through hole 12.
[0063] As Figure 2 and Figure 5 shown, in a possible design, the second observation cover includes a second visible main body portion 210, a rotating shaft connecting portion 230, and a plurality of second buckle portions 211.
[0064] A plurality of second buckle portions 211 are fixed on the lower surface of the second visible main body portion 210. A barb is provided at the end of the second buckle portion 211 away from the second visible main body portion 210. When the second observation cover is buckled on the installation wall 220, the barb of the second buckle portion 211 is clamped inside the starter housing 10 so that the second visible main body portion 210 is buckled on the installation wall 220.
[0065] The lower surface of the second visible main body portion 210 refers to the side facing the installation wall 220 when the second observation cover is buckled with the installation wall 220.
[0066] In this embodiment, 6 second buckle portions 211 are provided on the lower surface of the second visible main body portion 210, and grooves corresponding to the barbs are provided at corresponding positions on the installation wall 220 of the starter housing 10, which facilitates the second buckle portions 211 to be stuck in the grooves. Thus, after the second observation cover is buckled on the installation wall 220, the second waterproof ring 222 is pressed, and the second waterproof ring 222 is closely attached to the starter housing 10, thereby preventing dust and water from entering the product interior through the second through hole 12 and meeting the protection ability requirements of the starter.
[0067] As Figure 3 and Figure 5 shown, one end of the rotating shaft connecting portion 230 is fixedly connected to the second visible main body portion 210. The other end of the rotating shaft connecting portion 230 is provided with an open hollow shaft 231. A rotating shaft 13 is provided on the starter housing 10. The inner diameter of the hollow shaft 231 is slightly larger than that of the rotating shaft 13, and the opening size on the hollow shaft 231 is slightly smaller than the diameter of the rotating shaft 13. In this way, when assembling the second observation cover, by using the elastic deformation of the material of the starter housing 10, the rotating shaft 13 can be snapped into the hollow shaft 231 from the opening, so that the second observation cover can form a rotatable connection along the rotating shaft 13, and the hollow shaft 231 will not come out during rotation.
[0068] In this embodiment, at least one notch 240 is further provided on the outer wall of the second visible main body portion 210 for an external tool to penetrate from the notch 240 to pry up or open the second observation cover.
[0069] In this embodiment, five notches 240 are provided on the outer wall of the second visible main body portion 210. When the second visible main body portion 210 is clamped with the starter housing 10, a user can insert a tool such as a screwdriver into the notch 240 to pry up the second visible main body portion 210 and open the second observation cover.
[0070] Please refer to Figure 7 , the second observation cover is fixed on the second through hole 12, and the working states of the indicating member 31, current cam 32, test button 33, emergency stop button 34, reset button 35, etc. in the internal relay can be directly observed from the outside of the starter through the second observation cover, and the indicating member 31, current cam 32, test button 33, emergency stop button 34, reset button 35, etc. can be operated by opening the second observation cover.
[0071] It can be understood that according to the needs of the electromagnetic starter, it is more urgent to observe and operate the contactor and relay. Therefore, visible structures are correspondingly provided for the contactor and relay. According to the requirements, visible structures can be provided on other devices. If it is not necessary to open and only observation is required, it can be set as the first visible structure 100. If it is necessary to open and operate, it can be set as the second visible structure 200.
[0072] In a possible design, the second visible structure can be a threaded connection design. Please refer to Figures 8 to 12 , in another structure, a threaded wall 320 protruding from the starter housing is provided around the circumference of the second through hole 12. The threaded wall 320 is hollow and communicates with the second through hole 12. An external thread 321 is provided on the outer wall of the threaded wall 320. The second observation cover includes a cover body 310 and an annular peripheral wall provided on one side of the cover body. An internal thread 312 is correspondingly provided on the inner side of the peripheral wall. The second observation cover can be screwed into the threaded wall 320, and the internal thread 312 in the cover body is screwed with the external thread of the threaded wall 320 so that the cover body 310 is screwed with the threaded wall 320 to form a sealed state.
[0073] As Figure 9 and Figure 11As shown, in this embodiment, the second observation cover further includes a hollow column 311. The hollow column 311 is provided on the side of the cover body with a peripheral wall and is located inside the peripheral wall. A third waterproof ring 330 is provided on the outer wall of the hollow column 311, and the third waterproof ring 330 is used to abut against the threaded wall 320. When the second observation cover is screwed into the threaded wall 320 of the starter housing, the end face of the threaded wall 320 will push the third waterproof ring 330 into the interior of the second observation cover. When the second observation cover is tightened, the third waterproof ring 330 will be flattened by the end faces of the second observation cover and the threaded wall 320, so that the third waterproof ring 330 is in close contact with the second observation cover and the threaded wall 320, thereby preventing dust and water from entering the interior of the product through the second through hole and meeting the protection ability requirements of the electromagnetic starter. At the same time, after the third waterproof ring 330 is flattened, it will generate an elastic force acting on the inside of the second observation cover and the threaded wall 320, which can make the internal thread 312 in the second observation cover closely adhere to the external thread 321, increasing the friction of the thread and preventing the second observation cover from loosening.
[0074] Please continue to refer to Figure 9 , in a possible design, the end face of the threaded wall 320 is provided with a convex structure 322. When the second observation cover is closed, the convex structure 322 pushes the third waterproof ring 330 to the deepest part of the second observation cover and can block the third waterproof ring 330 to prevent it from falling. Since the third waterproof ring 330 has been pushed into the interior of the second observation cover by the convex structure 322, when the user opens the second observation cover, it will not fall out, preventing the user from losing the third waterproof ring 330 during the disassembly process.
[0075] The end face of the peripheral wall away from the cover body is provided with a first rib 331. The first rib 331 is arranged along the radial direction of the peripheral wall. A second rib 332 is arranged at the position corresponding to the first rib 33 on the threaded wall 320 outside the second through hole. The first rib 331 and the second rib 332 are engaged with each other.
[0076] After the second observation cover is tightened on the threaded wall 320, the first rib 331 will be stuck into the second rib 332, which can prevent the second observation cover from loosening.
[0077] The protruding height of the first rib 331 is the same as the recessed depth of the second rib 332. When the second observation cover is tightened along the second through hole 12, the first rib 331 just gets stuck into the second rib 332, so that the first rib 331 and the second rib 332 are engaged to prevent the second observation cover from loosening and improve the sealing performance of the electromagnetic starter.
[0078] To ensure that during the process of tightening the second observation cover, the first rib 331 can be smoothly stuck into the interior of the second rib 332 and ensure that the first rib 331 and the second rib 332 can be fully fitted, the protruding height of the first rib 331 and the recessed depth of the second rib 332 do not exceed 1 mm.
[0079] The number of the first convex ribs 331 is at least one. When there is one first convex rib 331 provided on the end face of the cover body, one second concave rib 332 is correspondingly provided on the threaded wall 320, and the position of the second concave rib 332 is set at the position corresponding to the first convex rib 331 when the second observation cover is tightened along the second through hole 12.
[0080] When there are multiple first convex ribs 331 provided on the end face of the cover body, the multiple first convex ribs 331 are evenly distributed on the end face of the cover body. Correspondingly, the number of the second concave ribs 332 is the same as that of the first convex ribs 331, and they are evenly distributed on the outer periphery of the threaded wall 320.
[0081] When there are multiple first convex ribs 331 provided on the end face of the cover body, the convex surface shape of the first convex ribs 331 is arc-shaped, and the multiple first convex ribs 331 are continuously arranged to form a continuous wavy shape. Correspondingly, the concave surface shape of the second concave ribs 332 is arc-shaped, and the multiple second concave ribs 332 are continuously arranged to form a continuous wavy shape, so as to facilitate the fitting of the first convex ribs 331 and the second concave ribs 332, prevent the second observation cover from loosening, and improve the sealing performance of the electromagnetic starter.
[0082] It can be understood that in this embodiment, in order to facilitate the user to grip the knob, multiple planes 340 are provided on the outer peripheral surface of the second observation cover. In this embodiment, 8 planes 340 are evenly provided to facilitate the user's gripping when installing or disassembling the second observation cover.
[0083] Please refer to Figure 12 , the second observation cover is fixed on the second through hole, and the working states of the indicating member 31, current cam 32, test button 33, emergency stop button 34, reset button 35, etc. in the internal relay can be directly observed from the outside of the starter through the second observation cover, and the indicating member 31, current cam 32, test button 33, emergency stop button 34, reset button 35, etc. can be operated by opening the second observation cover.
[0084] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.
Claims
1. An electromagnetic starter, characterized in that, Comprising: A starter body, on which a second device and a first device are provided; A starter housing, covering the outside of the starter body to protect the starter body; The starter housing is provided with a first visible structure and a second visible structure. The first visible structure is arranged corresponding to the position of the first device, and the second visible structure is arranged corresponding to the position of the second device; The first visible structure includes a first through hole and a first observation cover arranged in cooperation with the first through hole. The first observation cover is made of a transparent material. The first through hole penetrates the starter housing, and the first observation cover forms a sealed connection with the first through hole; The second visible structure includes a second through hole and a second observation cover arranged in cooperation with the second through hole. The second observation cover is made of a transparent material. The second through hole penetrates the starter housing, and the second observation cover can be switched between an open state and a sealed state relative to the second through hole; 2. The electromagnetic starter according to claim 1, characterized in that, A first step is provided at the inner edge of the first through hole, a first groove is provided on the first step, a first waterproof ring is arranged in cooperation with the first groove, the first observation cover is buckled on the first through hole, and the outer ring of the first observation cover abuts against the first waterproof ring to make the first observation cover form a sealed connection with the first through hole; 3. The electromagnetic starter according to claim 2, characterized in that, The thickness of the first waterproof ring is greater than the depth of the first groove; 4. The electromagnetic starter according to claim 2, characterized in that, The first observation cover includes a first visible main body part and a plurality of first buckle parts. The plurality of first buckle parts are fixed on the surface of the first visible main body part close to the first device side. A barb is provided at the end of the first buckle part away from the first visible main body part. When the first observation cover is buckled on the first through hole, the barb of the first buckle part is clamped inside the starter housing so that the first observation cover is fixed on the first through hole; 5. The electromagnetic starter according to claim 1, characterized in that, The second through hole penetrates the starter housing, and an installation wall protruding from the starter housing is provided around the second through hole. The installation wall is hollow and communicates with the second through hole; A groove is provided on the outer periphery of the installation wall, and one side of the groove is adjacent to the surface of the housing. A second waterproof ring is sleeved in the groove. The second observation cover is buckled on the installation wall, and the outer ring of the second observation cover abuts against the second waterproof ring to make the second observation cover form a sealed state relative to the second through hole; 6. The electromagnetic starter according to claim 5, characterized in that, The second observation cover includes a second visible main body part, a rotating shaft connecting part and a plurality of second buckle parts; One end of the rotating shaft connecting part is fixedly connected with the second visible main body part, and the other end of the rotating shaft connecting part forms a rotatable connection with the starter housing; The plurality of second buckle parts are fixed on the lower surface of the second visible main body part. A barb is provided at the end of the second buckle part away from the second visible main body part. When the second observation cover is buckled on the installation wall, the barb of the second buckle part is clamped inside the starter housing so that the second visible main body part is buckled on the installation wall.
7. The electromagnetic starter according to claim 6, characterized in that, At least one notch is further provided on the outer wall of the second visible main body part for an external tool to penetrate from the notch to pry up or open the second observation cover.
8. The electromagnetic starter according to claim 1, characterized in that, A threaded wall protruding from the starter housing is provided around the circumference of the second through hole. The threaded wall is hollow and communicates with the second through hole. External threads are provided on the outer wall of the threaded wall. The second observation cover includes a cover body and an annular peripheral wall provided on one side of the cover body. Internal threads are correspondingly provided on the inner side of the peripheral wall. The second observation cover can be screwed into the threaded wall to be screwed with the threaded wall to form a sealed state.
9. The electromagnetic starter according to claim 8, characterized in that, The second observation cover further includes a hollow column. The hollow column is provided on the side of the cover body where the peripheral wall is provided and is located inside the peripheral wall. A third waterproof ring is provided on the outer wall of the hollow column for abutting against the threaded wall.
10. The electromagnetic starter according to claim 9, characterized in that, A protruding structure is provided on the outer side of the hollow column to prevent the third waterproof ring from falling off. A first convex rib is provided on the end face of the peripheral wall away from the cover body. The first convex rib is arranged along the radial direction of the peripheral wall. A second concave rib is provided at a position corresponding to the first convex rib on the outer periphery of the second through hole. The first convex rib and the second concave rib are engaged with each other.