Relay with limiting structure
By setting a limit structure on the relay base and designing a separation protruding groove to limit the deformation of the reed, the problem of excessive deformation of the reed during impact is solved, and the impact resistance of the relay is improved.
Patent Information
- Application Number
- CN202422087213.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-27
- Publication Date
- 2025-07-25
- Estimated Expiration
- 2034-08-27
AI Technical Summary
When the relay is impacted or vibrated by external shocks or vibrations, the reed is prone to excessive deformation, affecting the performance of the relay.
The limit structure is set on the base of the relay, and the deformation of the reed towards the base direction is restricted by the limit structure. Combined with the design of the armature and yoke, the projections and grooves that are separated are used to limit the deformation of the reed.
Effectively control the deformation range of the reed to ensure that the relay can still be used normally when impacted, and improve impact resistance.
Smart Images
Figure CN223155925U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of relays, in particular to a relay with a limiting structure. Background Art
[0002] An electromagnetic relay is an electrical device that uses electromagnetic force to drive mechanical components to move relative to each other to produce a predetermined response. It generally consists of a magnetic circuit part, a moving reed part, and a static reed part. The magnetic circuit part includes an iron core, a skeleton, a coil, an armature, a yoke, and a reed. When an electric current passes through the coil, an electromagnetic force is generated, and the armature is attracted and contacts the pole face at one end of the iron core, thereby driving the moving contact of the moving reed part to close with the static contact of the static reed part; when the current in the coil disappears, the electromagnetic force disappears, the armature resets and separates from the pole face at one end of the iron core, so that the moving contact of the moving reed part separates from the static contact of the static reed part. In this way, by the contact or separation of the moving contact and the static contact, the on-off of the external load circuit is achieved.
[0003] When the relay is in transportation or use, it often receives external impacts or vibrations due to its own dropping. When the relay is subjected to large vibrations or impact forces, due to the certain degree of freedom of the reed, it is easy to deform, thus affecting the use performance of the relay. Summary of the Utility Model
[0004] To solve at least one of the problems existing in the above-mentioned prior art, according to one aspect of the present utility model, a relay is provided, including: a base; a magnetic circuit system installed on the base, including a skeleton, a coil, an iron core, a yoke, an armature, and a reed. The skeleton includes a mounting frame and a collar. The mounting frame is connected to the base. The iron core is disposed inside the collar. The coil is sleeved outside the collar. One end of the yoke is connected to one end of the iron core. The armature is swingably arranged relative to the other end of the yoke. Two ends of the reed are respectively connected to the armature and the yoke; a contact system, including a moving contact and a static contact module. The static contact module is installed on the base. The moving contact is installed on the reed; wherein, a limiting structure is provided on one side of the base facing the armature, and the limiting structure is used to abut against the reed when the relay is impacted, so as to limit the deformation amount of the reed in the direction of the base.
[0005] In some embodiments, the armature includes a first end and a second end opposite to each other. The first end is close to the moving contact. The second end is swingably arranged relative to the yoke; the limiting structure includes two first protrusions and a second protrusion that are separately arranged. The first protrusion corresponds to the first end, and the second protrusion corresponds to the second end.
[0006] In some embodiments, a groove is provided in the first protrusion.
[0007] In some embodiments, the reed has external pins, and a first boss is provided on the base, and the external pins pass through the first boss.
[0008] In some embodiments, the second protrusion is connected to the first boss.
[0009] In some embodiments, the height of the second protrusion is higher than the height of the first boss.
[0010] In some embodiments, the static contact module has connection pins, and a second boss for the connection pins to pass through is provided on the mounting bracket. One end of the armature facing the second boss is provided with a third protrusion, and an avoidance notch for avoiding the second boss is formed between the third protrusion and the end face of the armature.
[0011] In some embodiments, along the width direction of the armature, there are two avoidance notches between the third protrusion and the end face of the armature.
[0012] In some embodiments, along the width direction of the armature, the width of the third protrusion is 5 / 7 - 2 / 3 of the width of the armature.
[0013] In summary, the relay with a limiting structure provided by the present invention has the following technical effects:
[0014] By providing a limiting structure on the base, when the relay is impacted, the reed drives the armature to deform in the direction of the base. After the reed touches the limiting structure, it cannot deform further. Thus, the limiting structure controls the deformation amount of the reed, enabling the reed to be within the normal deformation range and ensuring the normal use performance of the relay. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 is a schematic structural diagram of the relay according to an embodiment of the present invention;
[0016] Figure 2 is Figure 1 an enlarged schematic view of I in
[0017] Figure 3 is Figure 1 a disassembled schematic view of the relay in
[0018] Figure 4 is Figure 1 a cross-sectional schematic view of the relay in
[0019] Figure 5 is Figure 1 a schematic structural diagram of the base in
[0020] Figure 6 is Figure 1 the schematic diagram of the structure behind the relay hidden base in
[0021] Accompanying drawings: 100 - relay with a limit structure, 10 - base, 11 - limit structure, 111 - first protrusion, 1111 - groove, 112 - second protrusion, 12 - first boss, 20 - magnetic circuit system, 21 - skeleton, 211 - mounting bracket, 213 - second boss, 22 - coil, 23 - iron core, 24 - yoke, 241 - first mounting part, 242 - second mounting part, 25 - armature, 251 - first end, 252 - second end, 253 - third protrusion, 254 - avoidance notch, 26 - reed, 261 - first connection section, 262 - second connection section, 263 - external pin, 30 - contact system, 31 - moving contact, 32 - static contact module, 321 - static reed, 322 - static contact, 323 - connection pin. Detailed implementation manners
[0022] For better understanding and implementation, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model.
[0023] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model 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 thus should not be construed as a limitation to the present utility model.
[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present utility model belongs. The terms used in the description of the present utility model herein are only for the purpose of describing specific embodiments and are not intended to limit the present utility model.
[0025] The present utility model will be further described in detail below in conjunction with the accompanying drawings.
[0026] Please refer to Figures 1 to 6 , which is the relay 100 with a limit structure provided by the embodiment of the present utility model, including a base 10, a magnetic circuit system 20 and a contact system 30.
[0027] Among them, please refer to Figures 1 to 5, the magnetic circuit system 20 is installed on the base 10 and includes a skeleton 21, a coil 22, an iron core 23, a yoke 24, an armature 25, and a reed 26. The skeleton 21 includes a mounting frame 211 and a collar. The mounting frame 211 is connected to the base 10. The iron core 23 is disposed within the collar, and the coil 22 is sleeved outside the collar. One end of the yoke 24 is connected to one end of the iron core 23. The armature 25 is swingably disposed relative to the other end of the yoke 24. Two ends of the reed 26 are respectively connected to the armature 25 and the yoke 24. The contact system 30 includes a moving contact 31 and a stationary contact module 32. The stationary contact module 32 is installed on the base 10, and the moving contact 31 is installed on the reed 26. Among them, a limiting structure 11 is provided on one side of the base 10 facing the armature 25. The limiting structure 11 is used to abut against the reed 26 when the relay is impacted, so as to limit the deformation amount of the reed 26 in the direction of the base 10.
[0028] For the relay 100 with the above limiting structure, by providing the limiting structure 11 on the base 10, when the relay is impacted, the reed 26 drives the armature 25 to deform in the direction of the base 10. After the reed 26 touches the limiting structure 11, it cannot further deform. Thus, the limiting structure 11 controls the deformation amount of the reed 26, so that the reed 26 can be within the normal deformation range, ensuring the normal use performance of the relay.
[0029] Among them, the yoke 24 of this embodiment is L-shaped and includes a first mounting portion 241 and a second mounting portion 242. The first mounting portion 241 is perpendicular to the axis of the collar and is riveted to the iron core 23. The second mounting portion 242 is parallel to the axis of the collar and is used for the armature 25 to swing. The reed 26 is also generally L-shaped and includes a first connecting section 261 and a second connecting section 262. The first connecting section 261 is riveted to the second mounting portion 242 of the yoke 24, and the second connecting section 262 is riveted to the armature 25 and can deform relative to the first connecting section 261 when the armature 25 moves towards the iron core 23. Thus, due to the reed 26 having a certain degree of deformation freedom, when the relay is violently impacted, the reed 26 may be excessively deformed, affecting the subsequent use performance.
[0030] Among them, the armature 25 includes opposite first end 251 and second end 252. The first end 251 is used to mount the moving contact 31, and the second end 252 is swingably disposed relative to the second mounting portion 242 of the yoke 24.
[0031] Please refer to Figures 2 to 5, in an embodiment of the present utility model, when the limiting structure 11 is arranged, it includes two separately arranged first protrusions 111 and second protrusions 112. The first protrusion 111 corresponds to the first end 251, and the second protrusion 112 corresponds to the second end 252. In this way, through the two separated first protrusions 111 and second protrusions 112, the first protrusion 111 and the second protrusion 112 can respectively limit the first end 251 and the second end 252 of the armature 25, that is, limit the deformation of the reed 26 at different positions, ensuring the anti-impact performance of the relay.
[0032] Among them, please refer to Figure 4 and Figure 5 , since the first protrusion 111 has a relatively large cross-sectional area, in order to avoid deformation of the first protrusion 111 during the injection molding and demolding of the base 10, a groove 1111 is provided on the first protrusion 111. In this way, the material used for the first protrusion 111 is reduced, achieving the effect of saving materials, and it is also convenient for the demolding of the first protrusion 111.
[0033] Please refer to Figures 3 to 5 , which is a schematic structural diagram of the relay 100 with a limiting structure in this embodiment. The moving contact 31 is installed at one end of the reed 26. The reed 26 has an external connection pin 263. A first boss 12 is provided on the base 10, and the pin passes through the first boss 12. In this way, by providing the first boss 12 on the base 10, the contact area between the external connection pin 263 and the base 10 can be increased to ensure the stability of the external connection pin 263 inserted on the base 10 and reduce the probability of deformation.
[0034] Furthermore, in an embodiment of the present utility model, the second protrusion 112 is connected to the first boss 12. In this way, the second protrusion 112 and the first boss 12 are connected as a whole, improving the structural strength of the second protrusion 112.
[0035] It can be understood that since the armature 25 is arranged at an angle with the yoke 24 after installation, and this angle is greater than 90 degrees, that is, the first end 251 of the armature 25 is closer to the base 10. Therefore, the height of the second protrusion 112 in this embodiment is higher than the height of the first boss 12, and the second protrusion 112 can be closer to the reed 26, so that when the reed 26 is impacted and deformed, it can contact the reed 26 more quickly to limit the deformation amount of the reed 26.
[0036] Please refer to Figure 3 and Figure 4 , in an embodiment of the present utility model, the static contact module 32 includes a static reed 321 and a static contact 322 provided on the static reed 321. The static contact module 32 has a connection pin 323, and the mounting bracket 211 is provided with a second boss 213 for the connection pin 323 to pass through. Please refer to Figure 6, one end of the armature 25 facing the second boss 213 is provided with a third protrusion 253. A relief notch 254 for avoiding the second boss 213 is formed between the third protrusion 253 and the end face of the armature 25, that is, a relief notch 254 is formed between the third protrusion 253 and the end face of the first end 251, which is equivalent to extending the armature 25. In this way, when the relay is impacted and the reed 26 deforms in the direction of the second boss 213, the side wall of the relief notch 254 contacts the second boss 213, restricting the deformation amount of the reed 26 in the direction of the second boss 213.
[0037] Further, in this embodiment, there are two static contact modules 32, one is a normally open static contact 322, and the other is a normally closed static contact 322. Each static contact module 32 has a connection pin 323. Therefore, two second bosses 213 for the two connection pins 323 to pass through are provided on the mounting bracket 211. One connection pin 323 passes through one second boss 213, and the two second bosses 213 are spaced apart along the width direction of the armature 25. Therefore, along the width direction of the armature 25, there are two relief notches 254 between the third protrusion 253 and the end face of the armature 25. The side wall of each relief notch 254 is in corresponding contact with a second boss 213 to restrict the deformation amount of the reed 26 in the direction of the second boss 213.
[0038] Further, in order to ensure the structural strength of the armature 25, along the width direction of the armature 25, the width of the third protrusion 253 is 5 / 7 - 2 / 3 of the width of the armature 25. That is, when the width of the third protrusion 253 is 5 / 7 of the width of the armature 25, the width of each relief notch 254 is 1 / 7 of the width of the armature 25; when the width of the third protrusion 253 is 2 / 3 of the width of the armature 25, the width of each relief notch 254 is 1 / 6 of the width of the armature 25, so that the third protrusion 253 can have sufficient width to ensure the structural strength of the armature 25.
[0039] For the above relay 100 with a limiting structure, by providing a limiting structure 11 on the base 10, the deformation amount of the reed 26 in the direction of the base 10 is restricted; by providing a third protrusion 253 on the armature 25, a relief notch 254 is formed between the third protrusion 253 and the armature 25, and the side wall of the relief notch 254 cooperates with the second boss 213 on the base 10 to restrict the deformation amount of the reed 26 in the direction of the static contact module 32. The cooperation of the limiting structure 11 and the third protrusion 253 restricts the deformation amount of the reed 26 in two directions, ensuring the anti-impact performance of the relay.
[0040] The technical means disclosed in the solution of the present utility model are not limited to those disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present utility model, several improvements and refinements can be made, and these improvements and refinements are also regarded as the protection scope of the present utility model.
Claims
1. A relay (100) with a limiting structure, characterized in that, Comprising: A base (10); A magnetic circuit system (20), installed on the base (10), including a skeleton (21), a coil (22), an iron core (23), a yoke (24), an armature (25), and a reed (26). The skeleton (21) includes a mounting bracket (211) and a collar. The mounting bracket (211) is connected to the base (10). The iron core (23) is disposed within the collar. The coil (22) is sleeved outside the collar. One end of the yoke (24) is connected to one end of the iron core (23). The armature (25) is swingably arranged relative to the other end of the yoke (24). Two ends of the reed (26) are respectively connected to the armature (25) and the yoke (24); A contact system (30), including a moving contact (31) and a stationary contact module (32). The stationary contact module (32) is installed on the base (10). The moving contact (31) is installed on the reed (26); Wherein, a limiting structure (11) is provided on a side of the base (10) facing the armature (25). The limiting structure (11) is used to abut against the reed (26) when the relay (100) is impacted, so as to limit the deformation amount of the reed (26) in the direction towards the base (10).
2. The relay (100) with a limiting structure according to claim 1, characterized in that The armature (25) includes an opposite first end (251) and second end (252). The first end (251) is close to the moving contact (31). The second end (252) is swingably arranged relative to the yoke (24); The limiting structure (11) includes two separately arranged first protrusions (111) and second protrusions (112). The first protrusion corresponds to the first end (251) and is arranged. The second protrusion (112) corresponds to the second end (252) and is arranged.
3. The relay (100) with a limit structure according to claim 2, characterized in that, A groove (1111) is provided inside the first protrusion (111).
4. The relay (100) with a limit structure according to claim 2 or 3, characterized in that, The reed (26) has an external connection pin (263). A first boss (12) is provided on the base (10). The external connection pin (263) penetrates through the first boss (12).
5. The relay (100) with a limiting structure according to claim 4, characterized in that, The second protrusion (112) is connected to the first boss (12).
6. The relay (100) with a limiting structure according to claim 5, characterized in that, The height of the second protrusion (112) is higher than the height of the first boss (12).
7. The relay (100) with a limiting structure according to any one of claims 1-3, characterized in that, The stationary contact module (32) has a connection pin (323). The mounting bracket (211) is provided with a second boss (213) for the connection pin (323) to penetrate through. One end of the armature (25) facing the second boss (213) is provided with a third protrusion (253). An avoidance notch (254) for avoiding the second boss (213) is formed between the third protrusion (253) and the end face of the armature (25).
8. The relay (100) with a limit structure according to claim 7, wherein, Along the width direction of the armature (25), there are two such avoidance notches (254) between the third protrusion (253) and the end face of the armature (25).
9. The relay (100) with a limit structure according to claim 7, characterized in that, In the width direction of the armature (25), the width of the third protrusion (253) is 5 / 7 - 2 / 3 of the width of the armature (25).