metronome relay

Abstract

The present application relates to the technical field of electrical components, and discloses a beat type relay, which comprises a base and a contact seat, a side wall of the base is provided with a guide hole and a guide groove, a bottom wall of the base is provided with a guide rail, the contact seat is provided with a first guide column, a second guide column and a sliding groove, the sliding groove is in sliding fit with the guide rail, the contact seat is opposite to the guide hole and the guide groove in the sliding direction of the contact seat, and the second guide column is at least partially located in the guide groove and in contact with the groove side wall of the guide groove for limiting, so that the alignment accuracy between the moving contact and the static contact is improved, and the reliability and service life of the relay are improved.

Description

Technical Field

[0001] This invention relates to the field of electrical components technology, and in particular to a clockwise relay. Background Technology

[0002] In electrical control devices such as electromagnetic relays and contactors, the contact base and armature are the core components for controlling the on / off state of the circuit. The coordination of their movements directly determines the device's operational stability, contact reliability, and service life. The contact base, as the mounting carrier for the moving contact, is driven by the rotation of the armature. The thrust generated by the armature's rotation acts on the contact base, causing it to move linearly, thus achieving the engagement and disengagement of the moving and stationary contacts, completing the on / off control of the electrical circuit.

[0003] In the design of the armature and contact seat, the armature is in a rotational motion while the contact seat is in a linear motion. Their trajectories are fundamentally different. If there is no proper clearance between them, the armature is prone to direct hard contact with the contact seat during rotation. This hard contact not only generates significant mechanical impact but also causes structural interference, leading to wear, deformation, or even damage to the armature or contact seat, severely affecting the normal operation of the device. Therefore, to avoid these hard contact and interference damage problems and ensure the structural integrity of the contact seat, a certain assembly gap is usually reserved in the vertical direction between the armature and the contact seat. This gap acts as a buffer protection structure, effectively mitigating the mechanical impact on the contact seat during armature rotation, thereby protecting the contact seat and extending its service life.

[0004] When the armature rotates, the force applied to the contact seat is not exactly in the same direction as the contact seat's movement, but rather an upward-tilting force. Therefore, the aforementioned gap causes the contact seat to have a certain amount of vertical movement or tilt. This prevents the moving contact mounted on the contact seat from maintaining a perfectly parallel and fully engaged contact with the stationary contact, instead resulting in a certain contact tilt angle. This leads to uneven force distribution between the moving and stationary contacts, with some areas experiencing excessive force while others experience insufficient force, or even localized non-contact. On one hand, the moving contact spring, subjected to non-axial eccentric forces for extended periods, is prone to elastic deformation and misalignment, reducing its elastic restoring performance and failing to provide stable contact pressure to the moving contact. On the other hand, the tilted contact between the moving and stationary contacts exacerbates frictional wear on the contact surface, accelerating contact wear and potentially causing contact burning and oxidation. This uneven force distribution between the moving and stationary contacts may lead to misalignment of the moving contact spring or increased friction between the contacts over time, ultimately resulting in poor contact between the moving and stationary contacts. Long-term use leads to a significant decrease in the reliability of contact between the moving and stationary contacts, resulting in faults such as poor contact and increased contact resistance, making it difficult to meet the application requirements of high reliability and long service life of electrical control devices. Summary of the Invention

[0005] The main objective of this invention is to provide a cycle-type relay, which aims to improve the alignment accuracy between the moving and stationary contacts, thereby increasing the reliability and service life of the relay.

[0006] To achieve the above objectives, the cycle-type relay proposed in this invention includes: A base, wherein a guide hole and a guide groove are formed through the sidewalls of the base, and a guide rail is formed on the bottom wall of the base; and The contact seat has a first guide post, a second guide post, and a sliding groove. The sliding groove slides with the guide rail. The contact seat is opposite to the guide hole and the guide groove in its sliding direction. The first guide post is at least partially located in the guide hole and contacts and limits the upper and lower holes of the guide hole. The second guide post is at least partially located in the guide groove and contacts and limits the side wall of the guide groove.

[0007] In one embodiment, the guide hole is square in shape; The first guide post has a non-contact fit with the left and right walls of the guide hole.

[0008] In one embodiment, the gap between the first guide post and the left and right walls of the guide hole is α mm, wherein 1.0 ≤ α ≤ 1.2.

[0009] In one embodiment, the projection of the first guide post in the length direction is H-shaped.

[0010] In one embodiment, the guide groove is positioned with its opening facing upwards.

[0011] In one embodiment, the guide groove and the guide hole are located on the same straight line in the vertical direction.

[0012] In one embodiment, the inner bottom wall of the base is formed with at least two guide rails, and the lower end face of the contact seat is formed with at least two sliding grooves; Each of the guide rails and each of the slide grooves corresponds to and slides in a one-to-one manner.

[0013] In one embodiment, the contact seat is further formed with a drive groove, and the beat relay further includes an armature having a drive protrusion; The armature is movably connected to the base and has a moving component in the moving direction of the contact seat and a moving component in the vertical direction. The driving protrusion is at least partially located within the driving groove and contacts the groove wall.

[0014] In one embodiment, the opening of the drive groove has a chamfer to avoid obstruction.

[0015] In one embodiment, the avoidance chamfer is a bevel chamfer.

[0016] In the technical solution of this invention, the three sets of limiting and cooperating structures—the guide rail and the slide groove, the guide hole and the first guide post, and the guide groove and the second guide post—provide multiple guides for the movement of the contact seat. The guide hole and the first guide post provide vertical contact limiting, completely preventing the contact seat from tilting due to the vertical component force when driven by the armature. Furthermore, the guide rail and the slide groove, and the second guide post and the guide groove provide horizontal contact limiting, avoiding the gaps that exist in the single cooperation method of the guide rail and the slide groove, which could cause the contact seat to tilt during movement. The tilting mechanism ensures that the first guide post and the guide hole, as well as the second guide post and the guide groove, are only in contact and do not obstruct the normal movement of the contact seat. When the contact seat tends to tilt during movement, the first or second guide post will exert a force on the inner wall of the corresponding guide hole or guide groove. This ensures that the movement direction of the contact seat does not tilt, and that the moving contact in the contact seat and the stationary contact in the base are in direct contact. This avoids increased friction and poor contact between the moving and stationary contacts, thereby improving the reliability and service life of the relay. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of a structural embodiment of the cycle relay provided by the present invention; Figure 2 for Figure 1 A schematic diagram of the structure of the first part of the embodiment; Figure 3 for Figure 1 A schematic diagram of the second part of the structure in the embodiment; Figure 4 for Figure 1 A schematic diagram of the third part of the embodiment.

[0019] Explanation of icon numbers: 100. Cyclic relay; 1. Base; 11. Guide hole; 12. Guide groove; 13. Guide rail; 2. Contact seat; 21. First guide post; 22. Second guide post; 23. Slide groove; 24. Drive groove; 241. Chamfer; 3. Armature; 31. Drive protrusion; 4. Moving contact; 5. Stationary contact.

[0020] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0022] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0023] Furthermore, the use of terms such as "first" and "second" in this invention is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this invention.

[0024] This invention proposes a cycle-type relay 100. Figures 1 to 4 This is a schematic diagram of the structure of an embodiment of the present invention.

[0025] In the embodiments of the present invention, please refer to Figure 1 The cycle relay 100 includes a base 1 and a contact seat 2. The side wall of the base 1 is formed with a guide hole 11 and a guide groove 12. The bottom wall of the base 1 is formed with a guide rail 13. The contact seat 2 is formed with a first guide post 21, a second guide post 22 and a sliding groove 23. The sliding groove 23 is slidably engaged with the guide rail 13. The contact seat 2 is opposite to the guide hole 11 and the guide groove 12 in its sliding direction. The first guide post 21 is at least partially located in the guide hole 11 and contacts and limits the upper and lower hole walls of the guide hole 11. The second guide post 22 is at least partially located in the guide groove 12 and contacts and limits the groove side wall of the guide groove 12.

[0026] In this example, the base 1 is the mounting base of the relay, and is usually made of insulating and flame-retardant materials (such as PA66, PBT); the contact seat 2 is the mounting carrier of the moving contact 4 and the driving target of the armature 3, and is made of insulating material that is compatible with the base 1. The base 1, the first guide post 21, and the second guide post 22 are all integrally formed structures.

[0027] In the technical solution of this invention, the three sets of limiting and cooperating structures—guide rail 13 and slide groove 23, guide hole 11 and first guide post 21, and guide groove 12 and second guide post 22—provide multiple guides for the movement of the contact seat 2. The guide hole 11 and first guide post 21 are vertically connected, completely preventing the contact seat 2 from tilting due to the vertical force of the armature 3 when driven by it. The horizontal contact of the second guide post 22 and guide groove 12 avoids the gaps that exist in the single cooperation method between guide rail 13 and slide groove 23, which could cause the contact seat 2 to tilt horizontally during movement. The first guide post 21 and the guide hole 11, and the second guide post 22 and the guide groove 12, are only in contact with each other and will not obstruct the normal movement of the contact seat 2. When the contact seat 2 tends to tilt during movement, its first guide post 21 or second guide post 22 will exert force on the inner wall of the corresponding guide hole 11 or guide groove 12, thereby ensuring that the movement direction of the contact seat 2 does not tilt, ensuring that the moving contact 4 set on the contact seat 2 and the stationary contact 5 set on the base 1 are in direct contact, avoiding the occurrence of increased friction and poor contact between the moving contact 4 and the stationary contact 5, thereby improving the reliability and service life of the relay.

[0028] The purpose of using two separate structures for the vertical and horizontal contact limits is to disperse the guiding stress and avoid the wear and deformation caused by long-term stress on a single guiding structure, thereby extending the service life of the relay.

[0029] It should be noted that the current cycle-type relay 100 is not limited to the structures listed above, but also includes basic structures such as housing, coil assembly, yoke, moving contact spring, and auxiliary contact assembly, etc., to ensure the normal functioning of the current cycle-type relay 100. The specific connection relationships are existing technology and are not directly related to the inventive point of this case. Therefore, even if the positional and connection relationships of other components are not specifically described, those skilled in the art should know how to assemble and implement them, and will not be elaborated here.

[0030] In one embodiment, the guide hole 11 is square; the first guide post 21 is in non-contact fit with the left and right walls of the guide hole 11.

[0031] In this example, the non-contact fit relationship means that the first guide post 21 and the guide hole 11 maintain a fixed small gap, with no physical contact and no frictional wear. Through the non-contact fit relationship, frictional contact between the first guide post 21 and the left and right hole walls of the guide hole 11 is avoided, which would interfere with the normal movement of the contact seat 2, ensuring the smooth movement of the contact seat 2 and providing structural protection for the smooth contact between the moving contact 4 and the stationary contact 5.

[0032] In one embodiment, the gap between the first guide post 21 and the left and right walls of the guide hole 11 is α mm, where 1.0 ≤ α ≤ 1.2.

[0033] In this example, the square guide hole 11 provides circumferential restraint to the square first guide post 21, primarily through contact restraint via its vertical sidewalls. A certain gap is required between the horizontal sidewalls of the first guide post 21 and the horizontal wall of the guide hole 11 to prevent excessive friction. The gap on each side is 1.0mm to 1.2mm, preventing the first guide post 21 from contacting the horizontal wall during movement within the guide hole 11, while also preventing excessively large gaps from causing an excessive decrease in the structural strength of the base 1. This clearly defined gap range makes the design more feasible and facilitates dimensional control during mass production.

[0034] In this example, the optimal value of α is 1.1 mm. This gap value was determined through multiple experiments and optimizations, satisfying both the non-contact requirement and strictly ensuring the structural strength of the base 1, achieving a balance between the two. The guide hole 11 and the first guide post 21 are machined according to the set value of 1.1 mm, with a dimensional tolerance of 0.1 mm between the upper and lower limits of the size. This allows the left and right gaps between them to be precisely controlled around this fixed value, ensuring that the guiding fit accuracy of each relay tends to be consistent.

[0035] Please refer to Figure 1 and Figure 3 In one embodiment, the projection of the first guide post 21 in the length direction is H-shaped.

[0036] In this example, the cross-section of the first guide post 21 in the extension direction is H-shaped. On the one hand, it can reduce the contact area between the first guide post 21 and the guide hole 11 when the contact seat 2 is tilted, reduce the friction between the two, and improve the smoothness of their relative movement. The two ends of the H-shape can normally contact the hole wall of the guide hole 11 without affecting the contact limiting effect. On the other hand, the contact seat 2 is made of thermoplastic resin, and this shape can make the wall thickness of the thermoplastic resin more uniform and prevent the formation of shrinkage marks.

[0037] In one embodiment, the guide groove 12 is positioned with its opening facing upwards.

[0038] In this example, the guide groove 12 is a recessed groove structure, made of the same material as the base 1, and is long and narrow, extending in the same direction as the guide hole 11. The second guide post 22 extends in the same direction as the first guide post 21, and is made of the same material as the contact seat 2, and is a rigid insulating post.

[0039] In this example, the opening of the guide groove 12 faces upward, meaning there is no vertical contact or limiting relationship between the second guide post 22 and the guide groove 12. There is only a supporting relationship between the bottom of the guide groove 12 and the second guide post 22, in order to avoid excessive limiting in the vertical direction and ensure smooth movement of the contact seat 2.

[0040] Please refer to Figure 2 and Figure 3 In one embodiment, the guide groove 12 and the guide hole 11 are located on the same straight line in the vertical direction.

[0041] In this example, the central axes of the guide groove 12 and the guide hole 11 coincide in the vertical direction. The corresponding first guide post 21 and second guide post 22 also have the same positional relationship. When the first guide post 21 moves along the guide hole 11 and the second guide post 22 moves along the guide groove 12, their movement trajectories remain synchronized. The guiding forces cooperate to avoid uneven force distribution and skewed movement of the contact seat 2 due to positional offset of the guiding structure, further constraining the movement posture of the contact seat 2. By setting the guide groove 12 and the guide hole 11 on the same vertical line, the dual guiding structures work synergistically, improving the synchronization and stability of the guiding limit, further reducing the tilt and offset of the contact seat 2, ensuring accurate alignment of the moving and stationary contacts 5, while avoiding mutual interference between the guiding structures, ensuring smooth movement of the contact seat 2, and further optimizing the reliability of the relay.

[0042] Please refer to Figure 2 and Figure 3 In one embodiment, the inner bottom wall of the base 1 is formed with at least two guide rails 13, and the lower end face of the contact seat 2 is formed with at least two sliding grooves 23; each guide rail 13 and each sliding groove 23 are slidably engaged in a one-to-one correspondence.

[0043] In this example, the combination of multiple sets of rail grooves further enhances support stability and guiding accuracy, making it suitable for scenarios where the contact base 2 is larger and requires higher motion stability. For instance, when the cycle relay 100 has multiple contact combinations, the contact base 2 will simultaneously install multiple moving contacts 4, resulting in a corresponding increase in volume. Multiple slide grooves 23 slide synchronously along their corresponding guide rails 13, and the combination of multiple sets of rail grooves forms uniform support and guidance, avoiding uneven force distribution and tilting of the contact base 2 caused by a single rail groove combination. It also disperses sliding friction, reducing wear on individual guide rails 13 and slide grooves 23, extending the structural service life, and improving the overall reliability and durability of the relay.

[0044] Please refer to Figure 3 and Figure 4In one embodiment, the contact seat 2 is further formed with a drive groove 24, and the beat relay 100 also includes an armature 3, which has a drive protrusion 31. The armature 3 is movably connected to the base 1 and has a moving component in the moving direction of the contact seat 2 and a moving component in the vertical direction. The drive protrusion 31 is at least partially located in the drive groove 24 and contacts the groove wall of the drive groove 24.

[0045] In this example, the armature 3 is the core component of the electromagnetic drive system. It is made of a magnetically conductive material (such as electrical pure iron or silicon steel sheet) and has a sheet-like or block-like structure. The drive groove 24 is a recessed groove structure used to accommodate the drive protrusion 31 of the armature 3, realizing the power transmission between the armature 3 and the contact seat 2. The size of the drive groove 24 matches the drive protrusion 31 to adapt to the driving action of the armature 3. The armature 3 is movably connected to the base 1, and actually has a rotational connection with the yoke set on the base 1, so that the armature 3 can rotate within a certain angle range when affected by electromagnetic force.

[0046] In this example, during assembly, the driving protrusion 31 is inserted into the driving groove 24 of the contact seat 2, maintaining a certain gap between the groove opening of the driving groove 24 and the armature 3 to avoid interference. When one side of the armature 3 is driven to rotate by electromagnetic force, that side swings downward, while the other side that cooperates with the contact seat 2 exhibits an upward swing trajectory. Therefore, it has a horizontal movement component that drives the contact seat 2 to move in the same direction as the contact seat 2, and a vertical movement component in the up-down direction. Through the force generated by the driving protrusion 31 and the groove wall of the driving groove 24, the contact seat 2 is pushed to make linear motion.

[0047] In one embodiment, the opening of the drive slot 24 has a chamfer 241.

[0048] In this example, the chamfer 241 of the drive groove 24 can help guide the drive protrusion 31 to smoothly enter the drive groove 24 during assembly, simplifying the installation between the two and reducing the possibility of collision or scratch between the groove and the drive protrusion 31, reducing wear on both, extending the service life of the armature 3 and the contact seat 2, and further improving the working stability of the relay.

[0049] Please refer to Figure 3 In one embodiment, the avoidance chamfer 241 is a bevel chamfer.

[0050] In this example, the chamfered edge is an inclined plane structure at the edge of the drive groove 24. Compared to chamfers of other shapes, the chamfered edge is easier to process and has a better guiding effect, allowing the drive protrusion 31 to enter and exit the drive groove 24 more smoothly. This further optimizes the smoothness of the fit between the drive protrusion 31 and the drive groove 24, better avoids hard contact and interference, reduces component wear, reduces the impact of mechanical impact on the movement posture of the contact seat 2, and ensures stable power transmission. At the same time, the chamfered edge is easy to process, facilitates mass production, reduces production costs, and further improves the practicality and reliability of the relay.

[0051] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A cycle-type relay, characterized in that, The cycle-type relay includes: A base, wherein a guide hole and a guide groove are formed through the sidewalls of the base, and a guide rail is formed on the bottom wall of the base; and The contact seat has a first guide post, a second guide post, and a sliding groove. The sliding groove slides with the guide rail. The contact seat is opposite to the guide hole and the guide groove in its sliding direction. The first guide post is at least partially located in the guide hole and contacts and limits the upper and lower holes of the guide hole. The second guide post is at least partially located in the guide groove and contacts and limits the side wall of the guide groove.

2. The cycle-type relay as described in claim 1, characterized in that, The guide hole is square in shape; The first guide post has a non-contact fit with the left and right walls of the guide hole.

3. The cycle-type relay as described in claim 2, characterized in that, The gap between the first guide post and the left and right walls of the guide hole is α mm, where 1.0 ≤ α ≤ 1.

2.

4. The cycle-type relay as described in any one of claims 1 to 3, characterized in that, The projection of the first guide post along its length is H-shaped.

5. The cycle-type relay as described in any one of claims 1 to 3, characterized in that, The guide groove is positioned so that its opening faces upwards.

6. The cycle-type relay as described in any one of claims 1 to 3, characterized in that, The guide groove and the guide hole are aligned in the same straight line in the vertical direction.

7. The cycle-type relay as described in any one of claims 1 to 3, characterized in that, The inner bottom wall of the base is formed with at least two guide rails, and the lower end face of the contact seat is formed with at least two sliding grooves. Each of the guide rails and each of the slide grooves corresponds to and slides in a one-to-one manner.

8. The cycle-type relay as described in any one of claims 1 to 3, characterized in that, The contact base also has a drive groove, and the beat relay also includes an armature, which has a drive protrusion. The armature is movably connected to the base and has a moving component in the moving direction of the contact seat and a moving component in the vertical direction. The driving protrusion is at least partially located within the driving groove and contacts the groove wall.

9. The cycle-type relay as described in claim 8, characterized in that, The drive slot has a chamfered opening to avoid obstruction.

10. The cycle-type relay as described in claim 9, characterized in that, The avoidance chamfer is a beveled chamfer.

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