relay

Abstract

The present disclosure relates to a relay, which comprises a base, a reed assembly, a pushing member and an elastic member. The reed assembly is arranged on the base, and comprises an open static reed and a closed static reed arranged oppositely, and a movable reed arranged between the open static reed and the closed static reed. The pushing member is configured to drive the movable reed to move. The elastic member is connected between the base and the pushing member, and is configured to be elastically deformed in the moving direction of the pushing member. The pushing member has a first position and a second position. In the first position, the pushing member overcomes the elastic force of the elastic member to make the movable reed contact the open static reed. In the second position, the pushing member is driven by the elastic force of the elastic member to make the movable reed contact the closed static reed. The movable reed is not reset by its own elasticity, which effectively improves the reliability of the relay, reduces the mechanical impact when the movable reed collides with the open static reed and the closed static reed, and prolongs the service life of the reed assembly.

Description

Technical Field

[0001] This disclosure relates to the field of electrical technology, and more specifically, to a relay. Background Technology

[0002] In existing relays, the relay push rod moves the moving spring in a unidirectional manner. The electromagnetic force generated by the energized coil drives the transmission mechanism to displace, pushing the moving spring to engage with the stationary spring's contact. However, this unidirectional drive only closes the moving spring's contact with the normally open stationary spring when energized. When de-energized and reset, it relies solely on the moving spring's inherent elastic return. Over long-term operation, this can easily lead to insufficient relay reliability, thus affecting the relay's lifespan. Utility Model Content

[0003] The purpose of this disclosure is to provide a relay that can reset the moving spring when the relay is de-energized, thereby avoiding reliance solely on the elastic action of the moving spring and improving the reliability and service life of the relay.

[0004] To achieve the above objectives, this disclosure provides a relay, the relay comprising:

[0005] Base;

[0006] A reed assembly is disposed on the base, the reed assembly including a normally open stationary reed and a normally closed stationary reed disposed opposite to each other, and a movable reed disposed between the normally open stationary reed and the normally closed stationary reed;

[0007] A pusher, configured to drive the movable spring to move; and

[0008] An elastic element is connected between the base and the pusher, and the elastic element is configured to produce elastic deformation in the direction of movement of the pusher.

[0009] The pusher has a first position and a second position. When the pusher is in the first position, it overcomes the elastic force of the elastic member to make the movable spring contact the normally open stationary spring. When the pusher is in the second position, it is driven by the elastic force of the elastic member to make the movable spring contact the normally closed stationary spring.

[0010] Optionally, the elastic element is a helical spring, and the pusher has a first protrusion protruding along the direction of movement. The elastic element is sleeved on the outside of the first protrusion and its two ends abut against the pusher and the base, respectively.

[0011] Optionally, the pusher has a notch, the base includes a first support extending into the notch, the notch has a mounting surface facing the first support, and the elastic member is connected between the mounting surface and the first support.

[0012] Optionally, one end of the pusher has a joint portion that engages with the movable spring, for driving the movable spring to move bidirectionally in the direction of movement of the pusher.

[0013] Optionally, the engagement includes a second protrusion formed on the pusher, the second protrusion passing through the movable spring along the direction of movement, such that the end of the pusher abuts against the movable spring to push the movable spring to move in one direction of the bidirectional movement of the pusher.

[0014] Optionally, the joint further includes a first limiting hole formed on the pusher, and a limiting piece is formed on the movable spring extending into the first limiting hole. One wall of the first limiting hole is used to push the movable spring to move in the other direction during the bidirectional movement of the pusher.

[0015] Optionally, the relay further includes an armature and an electromagnetic drive component disposed on the base.

[0016] The electromagnetic drive is used to attract the armature when energized, so as to apply a force to the pusher to push the moving spring towards the normally open stationary spring;

[0017] When the electromagnetic drive is de-energized, it releases the armature, which is then reset by being pushed by the pusher.

[0018] Optionally, the armature has two oppositely arranged grooves on both sides of the pusher in the width direction, and the end of the pusher has a limiting rod for extending into the groove, which is used to limit the armature in the width direction of the pusher.

[0019] Optionally, the end of the limiting rod is formed with a limiting hook for limiting the armature in the direction of movement of the pusher.

[0020] Optionally, the pusher has a second limiting hole, and the base has a second support for extending into the second limiting hole, wherein the size of the second limiting hole is larger than the size of the second support in the direction of movement of the pusher.

[0021] Through the above technical solution, when the relay is energized, the pushing component can overcome the elastic force of the elastic component to bring the moving spring into contact with the normally open stationary spring. At this time, the elastic component can store elastic potential energy. When the relay changes from an energized state to an de-energized state, the elastic component can release the elastic potential energy, driving the pushing component to reset the moving spring and bring it into contact with the normally closed stationary spring. This avoids the moving spring relying solely on its own elastic action to reset, which not only effectively improves the reliability of the relay but also reduces the mechanical impact when the moving spring collides with the normally open and normally closed stationary springs, extending the service life of the spring assembly. In addition, the elastic component and the pushing component extend in the same direction, which also makes the reset path of the pushing component more stable and effectively avoids collisions and influences on other adjacent components in the relay when the pushing component resets.

[0022] Other features and advantages of this disclosure will be described in detail in the following detailed description section. Attached Figure Description

[0023] The accompanying drawings are provided to further illustrate the present disclosure and form part of the specification. They are used together with the following detailed description to explain the present disclosure, but do not constitute a limitation thereof. In the drawings:

[0024] Figure 1 This is a schematic diagram of a relay according to one embodiment of the present disclosure.

[0025] Figure 2 This is a schematic diagram of a relay according to one embodiment of the present disclosure from another perspective.

[0026] Figure 3 yes Figure 2 An enlarged view of part A based on the basic structure.

[0027] Figure 4 This is a schematic diagram of a relay in a de-energized state according to one embodiment of the present disclosure.

[0028] Figure 5 This is a schematic diagram of a relay in an energized state according to one embodiment of the present disclosure.

[0029] Figure 6 This is a schematic diagram of a drive element in a relay according to one embodiment of the present disclosure.

[0030] Figure 7 This is a schematic diagram of the armature in a relay according to one embodiment of the present disclosure.

[0031] Figure 8 This is a schematic diagram of a normally open stationary reed in a relay according to one embodiment of the present disclosure.

[0032] Figure 9 This is a schematic diagram of a normally closed stationary reed in a relay according to one embodiment of the present disclosure.

[0033] Figure 10 This is a schematic diagram of the moving reed in a relay according to one embodiment of the present disclosure.

[0034] Explanation of reference numerals in the attached figures

[0035] 1-Base; 11-First support; 12-Second support; 2-Reed assembly; 20-Reed contact; 21-Normally open stationary reed; 22-Normally closed stationary reed; 23-Moving reed; 231-Limiting piece; 232-Moving reed connecting piece; 3-Pushing element; 31-Notch; 311-Mounting surface; 3111-First protrusion; 32-Second protrusion; 33-First limiting hole; 34-Limiting rod; 341-Limiting hook; 35-Second limiting hole; 4-Elastic element; 5-Armature; 51-Groove; 6-Electromagnetic drive element. Detailed Implementation

[0036] The specific embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this disclosure.

[0037] In this disclosure, unless otherwise stated, directional terms such as "inner" and "outer" are defined in relation to the outline of the corresponding components. The terms "first," "second," etc., are used to distinguish different components and are not sequential or significant. Furthermore, in the following description, when referring to the accompanying drawings, unless otherwise explained, the same reference numerals in different drawings denote the same or similar elements.

[0038] For ease of understanding, the directions involved in this disclosure are predefined here first. (Refer to...) Figure 1 The direction of movement of the pusher 3 is the direction in which it pushes the spring 23. This disclosure uses the generally plate-shaped pusher 3 as an example. Figure 1 The direction of motion is also the length direction of the pusher 3, while the width and thickness directions of the pusher 3 are perpendicular to this direction of motion.

[0039] According to one embodiment of this disclosure, such as Figures 1 to 10As shown, a relay is provided, comprising a base 1, a reed assembly 2, a pusher 3, and an elastic member 4. The reed assembly 2 is disposed on the base 1 and includes a normally open stationary reed 21 and a normally closed stationary reed 22 disposed opposite to each other, and a movable reed 23 movably disposed between the normally open and normally closed stationary reeds 21 and 22. The pusher 3 is configured to drive the movable reed 23 to move. The elastic member 4 is connected between the base 1 and the pusher 3 and is configured to elastically deform in the direction of movement of the pusher 3. The pusher 3 has a first position and a second position. In the first position, the pusher 3 overcomes the elastic force of the elastic member 4 to bring the movable reed 23 into contact with the normally open stationary reed 21. In the second position, the pusher 3 is driven by the elastic force of the elastic member 4 to bring the movable reed 23 into contact with the normally closed stationary reed 22.

[0040] Through the above technical solution, when the relay is energized, the pushing member 3 can overcome the elastic force of the elastic member 4 to make the moving spring 23 contact the normally open stationary spring 21. At this time, the elastic member 4 can store elastic potential energy. When the relay changes from the energized state to the de-energized state, the elastic member 4 can release the elastic potential energy, driving the pushing member 3 to reset the moving spring 23 and make contact with the normally closed stationary spring 22. This avoids the moving spring 23 relying solely on its own elastic action to reset, which not only effectively improves the reliability of the relay, but also reduces the mechanical impact when the moving spring 23 collides with the normally open stationary spring 21 and the normally closed stationary spring 22, extending the service life of the spring assembly 2. In addition, the elastic member 4 and the pushing member 3 extend in the same direction, which can also make the reset path of the pushing member 3 more stable, and can also effectively avoid collisions and influences on other adjacent components in the relay when the pushing member 3 resets.

[0041] It should be noted that the elastic element 4 can be designed so that, regardless of the position of the pusher 3, the elastic element 4 always tends to push the pusher 3. The continuous elastic force of the elastic element 4 ensures that the moving spring 23 always tends to press against the corresponding normally closed stationary spring 22. That is, in the first position, the moving spring 23 is in contact with the normally open stationary spring 21. Although the elastic element 4 has a counter-pushing force on the moving spring 23, the pushing force of the pusher 3 is greater than this elastic force, so the moving spring 23 can still press against the normally open stationary spring 21. After the pushing force of the pusher 3 is eliminated, the elastic force of the elastic element 4 pushes the pusher 3 from the first position to the second position, thereby making the moving spring 23 contact the normally closed stationary spring 22. In the second position, the continuous elastic force of the elastic element 4 can still ensure that the contact pressure between the moving spring 23 and the normally closed stationary spring 22 is stable, effectively avoiding the problems of arc discharge and increased contact resistance caused by mechanical vibration or poor contact, thereby improving the reliability of the relay in high voltage and high current environments.

[0042] Furthermore, such as Figures 1 to 6As shown, the elastic element 4 can be a helical spring, and the pusher 3 has a first protrusion 3111 protruding along the direction of movement. The elastic element 4 is sleeved on the outside of the first protrusion 3111, and its two ends abut against the pusher 3 and the base 1, respectively. In the first position, the pusher 3 drives the movable spring 23 to contact the normally open stationary spring 21. At this time, the helical spring is compressed and shortened. In the second position, the helical spring rebounds and extends, driving the movable spring 23 to contact the normally closed stationary spring 22. Here, the first protrusion 3111 can serve as an internal guide post for the helical spring, effectively preventing radial offset or torsional deformation of the helical spring during compression or rebound, ensuring that the elastic force is always transmitted axially, realizing precise guidance and stable force transmission of spring deformation, and ensuring the linearity of the movement trajectory of the pusher 3. The elastic element 4 can also be a tension spring. When the pusher 3 is in the first position, the tension spring is stretched. In the second position, the tension spring releases its elastic potential energy and shortens to its original length. This disclosure does not limit this.

[0043] Furthermore, such as Figures 1 to 6 As shown, the pusher 3 may have a notch 31, and the base 1 includes a first support 11 extending into the notch 31. The notch 31 has a mounting surface 311 facing the first support 11, and the elastic member 4 is connected between the mounting surface 311 and the first support 11. The notch 31 allows the elastic member 4 to be mounted in the middle of the pusher 3, saving installation space, reducing interference with other components in the relay, and effectively reducing the thickness of the relay. The pusher 3 may also have an outwardly protruding mounting seat, which corresponds to the first support 11 and the elastic member 4 is disposed between the two. This disclosure does not limit this aspect.

[0044] According to one embodiment of this disclosure, such as Figure 2 , Figure 6 and Figure 10 As shown, one end of the pusher 3 may have a joint that mates with the movable spring 23, for driving the movable spring 23 to move bidirectionally in the direction of movement of the pusher 3. Here, the joint can form a mechanical connection with the movable spring 23 to ensure that the movable spring 23 can follow the movement of the pusher 3.

[0045] Specifically, the joint may include a second protrusion 32 formed on the pusher 3. The second protrusion 32 passes through the movable spring 23 along the direction of movement, so that the end of the pusher 3 abuts against the movable spring 23, thereby pushing the movable spring 23 to move in one direction of the bidirectional movement of the pusher 3. Here, it may push the movable spring 23 to move towards the normally open stationary spring 21. The second protrusion 32 can serve as a guide, making the process of the pusher 3 driving the movable spring 23 to move more stable and preventing slippage.

[0046] Here, the second protrusion 32 can be a hook-type structure, so that the moving spring 23 can be limited in the second protrusion 32, so that the pusher 3 can also drive the moving spring 23 to move towards the normally closed stationary spring 22 through the second protrusion 32.

[0047] The second protrusion 32 can also be configured to pass only through the movable spring 23. When energized, the pusher 3 moves until its end abuts against the movable spring 23, causing the movable spring 23 to move until the pusher 3 is in the first position, at which point the movable spring 23 contacts the normally open stationary spring 21. The joint may also include a first limiting hole 33 formed on the pusher 3, and a limiting piece 231 extending into the first limiting hole 33 is formed on the movable spring 23. One wall of the first limiting hole 33 is used to push the movable spring 23 to move in the other direction during the bidirectional movement of the pusher 3. Here, it may be to push the movable spring 23 toward the normally closed stationary spring 22. Thus, when the power-on state changes to the power-off state, the end of the pusher 3 with the second protrusion 32 does not abut against the moving spring 23. The pusher 3 moves until one wall of the first limiting hole 33 contacts the moving spring 23, pushing the moving spring 23 toward the normally closed stationary spring 22 until the pusher 3 is in the second position, at which point the moving spring 23 contacts the normally open stationary spring 21. The first limiting hole 33 can be a blind hole or a through hole. When the first limiting hole 33 is a through hole, the limiting piece 231 can pass through the first limiting hole 33 along the thickness direction of the pusher 3.

[0048] Here, the first limiting hole 33 and the second protrusion 32 are spaced apart in the width direction of the pusher 3, and in the direction of movement of the pusher 3, the size of the first limiting hole 33 is larger than the size of the limiting piece 231. Since the first limiting hole 33 has a certain size, when only the end of the pusher 3 at the second protrusion 32 is pressed against the moving spring 23, the first limiting hole 33 will not exert pressure on the moving spring 23. This reduces the pressure when the moving spring 23 abuts against the normally open stationary spring 21. This reduces the wear on the spring contacts 20 of the moving spring 23 and the normally open stationary spring 21, thus increasing the service life of the moving spring 23 and the normally open stationary spring 21. Of course, the size of the limiting hole 33 can also be set to match the size of the limiting piece 231, that is, the first limiting hole 33 and the limiting piece 231 can be interference fit or transition fit. In this case, the joint can only include the first limiting hole 33, and the moving spring 23 can be driven to move in both directions through the first limiting hole 33. This disclosure does not limit this.

[0049] It should be noted that, as Figure 2 and Figure 6As shown, when the joint includes the first limiting hole 33, the second protrusion 32 can be a tapered structure. The tapered structure's tapered characteristic allows the movable spring 23 to be automatically guided and positioned along the inclined surface during installation, facilitating the assembly of the movable spring 23. It can also accommodate a wider range of mounting hole sizes for the movable spring 23, improving versatility and tolerance.

[0050] According to one embodiment of this disclosure, such as Figures 1 to 5 As shown, the relay also includes an armature 5 and an electromagnetic drive 6 disposed on the base 1. The electromagnetic drive 6 is used to attract the armature 5 when energized, so as to apply a force to the pusher 3 to push the normally open stationary spring 21 to the moving spring 23. When de-energized, the electromagnetic drive 6 releases the armature 5, and the elastic member 4 can release the elastic force so that the armature 5 can be pushed back to its original position by the pusher 3.

[0051] Furthermore, such as Figure 1 , Figure 2 , Figure 6 and Figure 7 As shown, the armature 5 has two oppositely arranged grooves 51 on both sides of the pusher 3 in the width direction. The end of the pusher 3 is formed with a limiting rod 34 for extending into the groove 51, which is used to limit the armature 5 in the width direction of the pusher 3, preventing the armature 5 from coming out of the pusher 3 in the width direction of the pusher 3, and avoiding affecting the subsequent operation of the relay.

[0052] Furthermore, such as Figures 1 to 5 As shown, the end of the armature 5 furthest from the pusher 3 can be hinged to the base 1, that is, with Figure 4 Taking the plane of the diagram as an example, the armature 5 can swing around its bottom as the center. Therefore, the movement trajectory of the groove 51 during the rotation of the armature 5 is arc-shaped. The dimension of the groove 51 in the thickness direction of the pusher 3 is larger than the dimension of the pusher 3. Thus, when the armature 5 is attracted to the electromagnetic drive 6, the bottom wall and top wall of the groove 51 can be spaced apart from the pusher 3, or only the bottom wall can contact the pusher 3. During the process of the relay changing from being energized to being de-energized, since the attraction between the armature 5 and the electromagnetic drive 6 is lost, the pusher 3 will push the top wall of the armature 5 to move under the action of the elastic member 4. At this time, the groove 51 moves in an arc shape until the top wall of the groove 51 contacts the pusher 3. The two can form a pushing state to prevent the armature 5 from moving further and prevent the armature 5 from over-resetting.

[0053] Furthermore, such as Figures 1 to 6As shown, the end of the limiting rod 34 can form a limiting hook 341, which is used to limit the armature 5 in the direction of movement of the pusher 3. Thus, when the relay changes from an energized state to an de-energized state, since the electromagnetic drive 6 does not exert a suction force on the armature 5, the pusher 3 can push the armature 5 under the elastic force of the elastic member 4. At this time, the armature 5 swings around the bottom until it abuts against the limiting hook 341. The limiting hook 341 can prevent the armature 5 from moving further, preventing excessive reset of the armature 5, and also preventing the armature 5 from dislodging from the pusher 3. This design allows the limiting hook 341 to abut and limit the armature 5 even before the top wall of the groove 51 contacts the pusher 3, thus effectively reducing the length of the limiting rod 34 and the space occupied by the pusher 3.

[0054] According to one embodiment of this disclosure, such as Figure 1 , Figure 2 and Figure 6 As shown, the pusher 3 has a second limiting hole 35, and the base 1 has a second support 12 for extending into the second limiting hole 35. The size of the second limiting hole 35 can be larger than the size of the second support 12 in the direction of movement of the pusher 3. This limits the range of movement of the pusher 3, preventing excessive movement of the pusher 3 from reducing the contact pressure between the moving spring 23 and the normally open stationary spring 21 or normally closed stationary spring 22, thus improving the lifespan of the spring assembly 2.

[0055] It should be noted that, in the direction of movement of the pusher 3, the reed assembly 2 and the armature 5 can be located at opposite ends of the electromagnetic drive 6, or the reed assembly 2 and the armature 5 can be located at the same end of the electromagnetic drive 6. This disclosure does not limit this. Regarding the structure of the reed assembly 2, reed contacts 20 can be riveted to the normally open stationary reed 21, the normally closed stationary reed 22, and the moving reed 23. The body of the moving reed 23 with the reed contacts 20 can also be riveted to a moving reed connecting piece 232. The corresponding circuit is closed by the contact between the reed contacts 20 of the moving reed 23 and the corresponding reed contacts 20 of the normally open stationary reed 21 or the normally closed stationary reed 22.

[0056] Based on the above solutions, this disclosure also provides an electrical device that includes the aforementioned relay and has all the beneficial effects of the aforementioned relay, which will not be elaborated here.

[0057] The preferred embodiments of this disclosure have been described in detail above with reference to the accompanying drawings. However, this disclosure is not limited to the specific details of the above embodiments. Within the scope of the technical concept of this disclosure, various simple modifications can be made to the technical solutions of this disclosure, and these simple modifications all fall within the protection scope of this disclosure.

[0058] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, this disclosure will not describe the various possible combinations separately.

[0059] Furthermore, various different embodiments of this disclosure can be combined in any way, as long as they do not violate the spirit of this disclosure, they should also be regarded as the content disclosed in this disclosure.

Claims

1. A relay, characterized in that, The relay includes: Base; A reed assembly is disposed on the base, the reed assembly including a normally open stationary reed and a normally closed stationary reed disposed opposite to each other, and a movable reed disposed between the normally open stationary reed and the normally closed stationary reed; A pusher, configured to drive the movable spring to move; and An elastic element is connected between the base and the pusher, and the elastic element is configured to produce elastic deformation in the direction of movement of the pusher. The pusher has a first position and a second position. When the pusher is in the first position, it overcomes the elastic force of the elastic member to make the movable spring contact the normally open stationary spring. When the pusher is in the second position, it is driven by the elastic force of the elastic member to make the movable spring contact the normally closed stationary spring.

2. The relay according to claim 1, characterized in that, The elastic element is a helical spring, and the pusher has a first protrusion protruding along the direction of movement. The elastic element is sleeved on the outside of the first protrusion and its two ends abut against the pusher and the base, respectively.

3. The relay according to claim 1 or 2, characterized in that, The pusher has a notch, the base includes a first support extending into the notch, the notch has a mounting surface facing the first support, and the elastic member is connected between the mounting surface and the first support.

4. The relay according to claim 1, characterized in that, One end of the pusher has a joint that engages with the movable spring, which drives the movable spring to move bidirectionally in the direction of movement of the pusher.

5. The relay according to claim 4, characterized in that, The engagement includes a second protrusion formed on the pusher, the second protrusion passing through the movable spring along the direction of movement, such that the end of the pusher abuts against the movable spring to push the movable spring to move in one direction of the bidirectional movement of the pusher.

6. The relay according to claim 5, characterized in that, The joint also includes a first limiting hole formed on the pusher, and a limiting piece is formed on the movable spring that extends into the first limiting hole. One wall of the first limiting hole is used to push the movable spring to move in the other direction during the bidirectional movement of the pusher.

7. The relay according to claim 1, characterized in that, The relay also includes an armature and an electromagnetic drive component disposed on the base. The electromagnetic drive is used to attract the armature when energized, so as to apply a force to the pusher to push the moving spring towards the normally open stationary spring; When the electromagnetic drive is de-energized, it releases the armature, which is then reset by being pushed by the pusher.

8. The relay according to claim 7, characterized in that, The armature has two oppositely arranged grooves on both sides of the pusher in the width direction, and the end of the pusher has a limiting rod for extending into the groove to limit the armature in the width direction of the pusher.

9. The relay according to claim 8, characterized in that, The end of the limiting rod forms a limiting hook, which is used to limit the armature in the direction of movement of the pusher.

10. The relay according to claim 7, characterized in that, The pusher has a second limiting hole, and the base has a second support for extending into the second limiting hole. In the direction of movement of the pusher, the size of the second limiting hole is larger than the size of the second support.

Images