A relay with reduced contact jitter

Abstract

The present invention relates to a relay for reducing contact jitter. The main body movable spring and the reaction force spring are positioned respectively by the cooperation of a pulling block and a slot. In particular, the slot effectively limits the jitter stroke of the reaction force spring, avoiding the occurrence of idle stroke due to kinetic energy during the action process. Furthermore, when the contacts are closed, the jitter of the movable spring part is reduced, the rebound is reduced, and the arc between the contacts due to rebound is avoided, thereby reducing the probability of contact adhesion. During the contact disconnection process, the vibration of the movable contact is reduced, and the occurrence of arc reignition is avoided. The push-pull rod effectively fixes the movable spring part through the combination of the pulling block and the slot, and solves the interference problem on the side close to the movable spring lead-out piece, making the design of the movable spring lead-out piece simpler and conducive to the miniaturization design of the relay. The pulling block contacts the main body movable spring piece through the convex bud, which can fix the force position of the main body movable spring piece, thereby making the contact disconnection position consistent.

Description

Technical Field

[0001] The present invention relates to the technical field of relays, and more particularly to a relay capable of reducing contact jitter. Background Art

[0002] A magnetic latching relay typically consists of a magnetic circuit, a contact section, a push mechanism, and a base. The magnetic circuit generally consists of two essentially symmetrical magnetic circuits, including a stationary magnetic conductor, a movable magnetic conductor, and a coil. The contact section includes a movable spring and a static spring, and the push mechanism primarily comprises a pusher. When a positive pulse voltage is applied to the relay coil, the magnetic circuit operates, and the pusher pushes the movable spring, causing the movable spring's moving contact to contact the static spring's stationary contact, triggering the relay. When a negative pulse voltage is applied to the coil, the magnetic circuit operates, and the pusher pushes the movable spring, disconnecting the movable spring's moving contact from the static spring's stationary contact, resetting the relay.

[0003] In existing magnetic latching relays, the dynamic spring typically consists of a moving spring blade, a moving spring lead, and a moving contact. The moving contact is connected to the movable end of the moving spring blade, which also engages with a pusher. The fixed end of the moving spring blade is connected to the moving spring lead, which is then clipped onto the base. The pusher has an H-shaped connector at the end that mates with the moving end of the moving spring blade.

[0004] Since the kinetic energy of the push card and the movable reed is large during the operation of the relay, during the contact switching process, when the contacts are closed, the push card and the movable reed will vibrate back and forth due to the above kinetic energy and inertia. The jitter frequency and amplitude of the push card and the movable reed are different. During this process, there will be a brief separation between the "H"-shaped connection and the movable reed, causing the contact to bounce back. These bounces will cause arcs to be generated between the contacts, increasing the probability of contact adhesion; when the contacts are disconnected, the movable contact will vibrate due to the kinetic energy of the push card and the movable reed, resulting in the contact gap having maximum and minimum values. When the contact gap is at the minimum value, it is easy to cause the arc to reignite.

[0005] Because the H-shaped connection, when pushing the movable contact of the dynamic spring to disconnect the static contact of the static spring, easily interferes with the dynamic spring lead-out piece due to the size of the existing relay, hindering normal disconnection. To avoid interference, the dynamic spring lead-out piece needs to be designed to be sufficiently far away from the dynamic spring piece in the direction of movement of the push card, which is not conducive to the efficient operation of the dynamic spring piece. Alternatively, the dynamic spring lead-out piece needs to be designed to be sufficiently far away from the push card in the height direction of the H-shaped connection, which increases the size of the relay.

[0006] During the installation process of the "H"-shaped connecting part and the dynamic spring, scraping is inevitable, resulting in production problems such as debris. Summary of the Invention

[0007] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a relay with reduced contact jitter, which effectively fixes the reaction spring of the dynamic spring part and reduces the jitter of the dynamic spring.

[0008] The technical solutions of the present invention are as follows:

[0009] A relay for reducing contact jitter is provided with a push-pull rod, a dynamic spring part, and a static spring part. The dynamic spring part includes a dynamic spring piece and a dynamic contact, and the static spring part includes a static spring piece and a static contact, and the dynamic spring piece and the static spring piece are respectively arranged in corresponding positions; the root of the dynamic spring piece is fixed, and the push-pull rod cooperates with the end of the dynamic spring piece to drive the end of the dynamic spring piece to move; the dynamic spring piece includes a main dynamic spring piece and a reaction spring piece, the dynamic contact is arranged on one side of the main dynamic spring piece, and the reaction spring piece is arranged on the other side; the push-pull rod is provided with a pulling block that cooperates with the main dynamic spring piece and is used to pull the main dynamic spring piece; the push-pull rod is provided with a slot corresponding to the reaction spring piece, and the end of the reaction spring piece is arranged in the slot to push the reaction spring piece and limit the amplitude of the reaction spring piece.

[0010] Preferably, a bending section is provided at the end of the push-pull rod, the pulling block is provided at the end of the bending section, and the slot is provided in the bending section.

[0011] Preferably, the reaction spring is arranged in the slot, and the maximum width margin for the reaction spring to vibrate between the side wall of the slot and the reaction spring is smaller than the maximum amplitude of the reaction spring in an unrestricted state when the relay is actuated.

[0012] Preferably, the slot has two side walls, which are a blocking surface and a pushing surface respectively. The blocking surface is located between the pushing surface and the pulling block; the amplitude of the reaction spring is limited by the blocking surface.

[0013] Preferably, the reaction spring is tightly fitted into the slot.

[0014] Preferably, the reaction spring and the slot are clearance-fitted, and the height of the blocking surface is set higher than the pushing surface.

[0015] Preferably, the end of the main movable spring is grooved along the center line to form two contact movable springs, and the two movable contacts are respectively arranged on the contact movable springs; corresponding to the two contact movable springs, the push-pull rod is provided with two pulling blocks, forming a "T"-shaped structure.

[0016] Preferably, the pulling block is provided with a convex burl protruding toward the contact moving spring piece corresponding to the contact moving spring piece.

[0017] Preferably, the end of the main movable spring is provided with a clearance opening at the slotted position, and the clearance opening is sleeved on the rod body of the push-pull rod.

[0018] Preferably, the main moving spring piece presses against the pulling block; when the reaction force spring piece is clamped in the clamping slot, the reaction force spring piece is elastically compressed toward the main moving spring piece.

[0019] Preferably, the end of the reaction spring is spaced apart from the bottom of the slot.

[0020] Preferably, the dynamic spring part further includes a dynamic spring lead-out piece, the root of which is connected to the root of the dynamic spring plate, and the end of the dynamic spring lead-out piece extends forward over the push-pull rod to form an offset intersection with the push-pull rod.

[0021] Preferably, the end of the dynamic spring lead-out piece forms a narrowed extension plate through a step structure, and the extension plate passes over the push-pull rod from the bottom. The push-pull rod is provided with a limiting column on the upper side, and the end of the reaction spring piece is bent corresponding to the limiting column and maintains a distance from the rod body and the limiting column of the push-pull rod.

[0022] The beneficial effects of the present invention are as follows:

[0023] The relay with reduced contact jitter of the present invention positions the main movable spring and the reaction spring respectively through the cooperation of the pulling block and the slot. In particular, the slot effectively limits the jitter travel of the reaction spring, avoiding idle travel caused by kinetic energy during operation. Furthermore, during the contact closing process, the jitter of the movable spring is reduced, reducing rebound, avoiding arcing between the contacts due to rebound, and reducing the probability of contact sticking. During the contact opening process, the vibration of the movable contact is reduced, preventing the possibility of arc restrike.

[0024] The push-pull rod effectively fixes the dynamic spring part through the combination of the pulling block and the slot, while solving the interference problem on the side close to the dynamic spring lead-out piece, making the design of the dynamic spring lead-out piece simpler and conducive to the miniaturization design of the relay.

[0025] The pulling block contacts the main movable spring through the convex bud. When the main movable spring is pulled, the convex bud and the main movable spring form an approximate point contact with a small contact area, which can fix the force position of the main movable spring, and thus the contact disconnection position is consistent, maintaining the stability of the movement direction, thereby improving the consistency of the product.

[0026] The main dynamic spring, through the end of the bifurcated structure, fits over the push-pull rod, forming a vertical limit. The reaction spring, through the bent end, cooperates with the limit post of the push-pull rod, forming an inward and outward limit. This ensures that after assembly, the dynamic spring and the push-pull rod form a two-dimensional limit in the vertical and inward directions. The end of the reaction spring maintains a gap from the bottom of the slot and does not contact it. When not affected by external forces, there is no risk of friction, resulting in better stability and preventing debris from scratching.

[0027] The pulling block and the slot are staggered, so that the action point of the pulling block when disconnecting the dynamic spring is staggered with the action point of the slot when closing the dynamic spring. The distance from the action point of the slot pushing the dynamic spring and the action point of the pulling block to open the dynamic spring to the contact point of the contact system can be adjusted, so as to realize the adjustment action and the force arm from the pushing point to the contact point of the contact system during reset, increase the breaking force of the push-pull rod, and thus realize the improvement of the anti-burning ability of the contact system and the increase of electrical life when the relay is in action; when the relay is reset, the force arm from the pulling point of the pulling block to the contact point of the contact system is shorter and its stiffness is higher, so that the energy of the magnetic circuit system can be directly applied to the contact point of the contact system quickly and directly, reducing the buffering effect of the dynamic spring, thereby effectively improving the stiffness and explosive force when breaking the contact system, thereby realizing the rapid and powerful disconnection of the contact system. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a cross-sectional view of the present invention;

[0029] Figure 2 This is a schematic structural diagram of the dynamic spring portion and the push-pull rod of the first embodiment;

[0030] Figure 3 1 is a schematic structural diagram of the push-pull rod of Example 1;

[0031] Figure 4 1 is a schematic structural diagram of the movable spring portion of the first embodiment;

[0032] Figure 5 1 is a schematic structural diagram of the contact system of embodiment 1 in a contact-off state;

[0033] Figure 6 yes Figure 5 A partial enlarged view of A;

[0034] Figure 7 is a top view of the push-pull rod of Example 1;

[0035] Figure 8 1 is a side view of the contact system of the first embodiment (the vertical direction in the figure is the up-down direction of the push-pull rod, the horizontal direction is the left-right direction of the push-pull rod, and the inside-out direction is the front-back direction of the push-pull rod);

[0036] Figure 9 is a structural schematic diagram of the contact system of Example 2 in a contact-off state;

[0037] Figure 10 yes Figure 9 A partial enlarged view of B;

[0038] Figure 11 is a top view of the push-pull rod of the second embodiment;

[0039] In the figure: 11 is the iron core, 12 is the coil, 13 is the armature, 14 is the yoke, 20 is the pushing part, 30 is the base, 41 is the push-pull rod, 411 is the pulling block, 412 is the convex bract, 413 is the slot, 4131 is the pushing surface, 4132 is the blocking surface, 414 is the limiting column, 415 is the rod body, 416 is the bending section, 51 is the moving spring, 511 is the main body moving spring, 5111 is the give way, 5112 is the contact moving spring, 5113 is the first sub-spring, 5114 is the second sub-spring, 5115 is the reinforcement part, 512 is the reaction force spring, 5121 is the anti-deflection, 5122 is the third sub-spring, 52 is the moving contact, 521 is the contact surface, 53 is the moving spring lead-out piece, 531 is the extension plate, 61 is the static spring, and 62 is the static contact. DETAILED DESCRIPTION

[0040] The present invention is further described in detail below with reference to the accompanying drawings and embodiments.

[0041] Example 1

[0042] In order to solve the problems of large vibration of the movable spring part and interference between the push-pull rod and the movable spring lead-out piece in the prior art, the present invention provides a relay with reduced contact vibration, such as Figures 1 to 6 As shown, the relay described in this embodiment includes a magnetic circuit system, a contact system, a driving member 20, and a base 30. The magnetic circuit system is composed of an iron core 11, a coil 12, an armature 13, and a yoke 14. The contact system comprises a push-pull rod 41, a movable spring, and a stationary spring. The movable spring comprises a movable spring 51, a movable contact 52, and a movable spring lead 53. The stationary spring comprises a stationary spring 61 and a stationary contact 62. The movable spring 51 and the stationary spring 61 are respectively positioned in corresponding positions. The base of the movable spring 51 is fixed, and the movable contact 52 is fixed near the end of the movable spring 51. The push-pull rod 41 cooperates with the end of the movable spring 51 to drive the end of the movable spring 51, thereby opening and closing the movable contact 52 and the stationary contact 62. Specifically, the movable spring 51 includes a main movable spring 511 and a reaction spring 512. The movable contact 52 is disposed on one side of the main movable spring 511, and the reaction spring 512 is disposed on the other side. The push-pull rod 41 is provided with a pulling block 411 that cooperates with the main movable spring 511 and is used to pull the main movable spring 511. When the movable contact 52 is pulled to disconnect from the static contact 62, the pulling block 411 is used to pull the end of the main movable spring 511, causing the end of the main movable spring 511 to swing, thereby disconnecting the movable contact 52 from the static contact 62. The push-pull rod 41 is provided with a slot 413 corresponding to the reaction spring 512. The end of the reaction spring 512 is disposed in the slot 413, which is used to push the reaction spring 512 and limit the amplitude of the reaction spring 512. After assembly is completed, the end of the main dynamic spring piece 511 is limited by the pulling block 411 , and the end of the reaction force spring piece 512 is limited by the clamping groove 413 .

[0043] like Figure 7 As shown, the latching slot 413 has two side walls, namely a blocking surface 4132 and a pushing surface 4131. The blocking surface 4132 is located between the pushing surface 4131 and the pulling block 411. That is, the blocking surface 4132, the pushing surface 4131, and the pulling block 411 are located in the direction of movement of the push-pull rod 41, and the blocking surface 4132 is closer to the pulling block 411 than the pushing surface 4131. The pushing surface 4131 is used to abut against the reaction spring 512 in the non-operating state and to push the reaction spring 512 during contact closure. The blocking surface 4132 is used to buffer the reaction spring 512 when the movable spring 51 vibrates. It can be seen that the slot 413 adds a blocking surface 4132 that provides a buffering and limiting function. Since the movable spring piece 51 has a certain kinetic energy after disconnection, the movable contact 52 will shake back, and the main movable spring piece 511 contacts the blocking surface 4132 during the rebound process, reducing the rebound distance, thereby reducing the size of the initial amplitude, and further reducing the number of restrike times of the arc.

[0044] To further reduce the rebound distance, the reaction spring 512 is positioned within the slot 413. The maximum width margin between the sidewalls of the slot 413 and the reaction spring 512, allowing for vibration of the reaction spring 512, is smaller than the maximum amplitude of the reaction spring 512 in an unrestricted state when the relay is actuated. This is achieved by limiting the amplitude of the reaction spring 512 through the blocking surface 4132 of the slot 413, thereby achieving a buffering effect. In this embodiment, the reaction spring 512 is positioned obliquely relative to the main dynamic spring 511. Furthermore, the reaction spring 512 is also inclined within the slot 413, with the distance between the reaction spring 512 and the sidewalls of the slot 413 corresponding to the angle of inclination. Furthermore, when the reaction spring 512 vibrates, the width margin between the sidewalls of the slot 413 and the reaction spring 512 dynamically changes. Therefore, this maximum width margin determines the amplitude of the reaction spring 512 within the slot 413.

[0045] In order to further reduce the rebound distance, in this embodiment, the connection between the slot 413 and the reaction spring 512 is a tight fit, that is, the width of the slot 413 is implemented to adapt to the thickness of the reaction spring 512 as much as possible, and considering that the installation angle of the reaction spring 512 is an inclined angle, in a specific embodiment, when the reaction spring 512 is arranged in the slot 413, the width of the slot 413 is the resistance between the blocking surface 4132 and the reaction spring 512, thereby achieving a tight installation.

[0046] To ensure a more stable connection between the movable spring 51 and the push-pull rod 41 and minimize vibration during operation, in this embodiment, the main movable spring 511 abuts against the pull block 411; when the reaction spring 512 is mounted in the slot 413, the reaction spring 512 is elastically compressed toward the main movable spring 511. Because a certain angle is formed between the reaction spring 512 and the main movable spring 511, after assembly, the reaction spring 512 remains against the push surface 4131 of the slot 413 and continuously applies force; simultaneously, the main movable spring 511 remains against the pull block 411 and continuously applies force. Due to the elastic compression, the reaction spring 512 maintains its tendency to expand and reset, offsetting a certain degree of momentum and inertia when the relay switches states. This prevents the reaction spring 512 and / or the main movable spring 511 from shaking due to idle travel, thereby reducing vibration of the movable spring 51 and lowering rebound.

[0047] When the contact system is implemented as a dual-contact system, if one contact erodes and the silver layer bulges during its lifespan, without a groove in the center of the movable spring 51, the other contact will be unable to make contact. Therefore, in this embodiment, the end of the main movable spring 511 is grooved along the centerline to form two contact movable springs 5112, and the two movable contacts are respectively disposed on the contact movable springs 5112; corresponding to the two contact movable springs 5112, the push-pull rod 41 is provided with two pull blocks 411, forming a "T"-shaped structure. This ensures that both contacts are in contact throughout their lifespan, ensuring that both contacts are eroded, thereby increasing the number of lifespans. Furthermore, to ensure the consistency of the two contacts, the two contact movable springs 5112 are grooved along the centerline to form a symmetrical structure, and the two movable contacts 52 are symmetrically disposed. Correspondingly, the two pull blocks 411 are symmetrically disposed on the upper and lower sides of the push-pull rod 41.

[0048] To improve the synchronization of the two contacts during opening and consistency during closing, the pull block 411 is provided with a protrusion 412 corresponding to the contact spring 5112, which protrudes toward the contact spring 5112. This ensures two-point contact when the contact spring 5112 is pulled, thereby improving the stability of the contact gap. The pull block 411 contacts the main body spring 511 through the protrusion 412. When the main body spring 511 is pulled, the protrusion 412 and the main body spring 511 form a near-point contact with a small contact area. This can stabilize the force position of the main body spring 511, thereby aligning the contact opening position, maintaining the stability of the movement direction, and thus improving product consistency.

[0049] In this embodiment, the end of the main movable spring 511 is provided with a clearance opening 5111 at the slotted position, and the clearance opening 5111 is sleeved on the rod body 415 of the push-pull rod 41. That is, after the assembly is completed, the rod body 415 of the push-pull rod 41 is embedded in the clearance opening 5111. Figure 8As shown, limit positions can be formed in the upper and lower directions of the push-pull rod 41 to prevent the movable spring 51 from swinging excessively or detaching in the upper and lower directions relative to the push-pull rod 41 .

[0050] The root of the dynamic spring lead-out piece 53 of the dynamic spring portion is connected to the root of the dynamic spring piece 51. The end of the dynamic spring lead-out piece 53 extends forward over the push-pull rod 41, forming an offset intersection with the push-pull rod 41. To bypass the push-pull rod 41, the end of the dynamic spring lead-out piece 53 is formed into a narrowed extension plate 531 through a stepped structure. The extension plate 531 passes over the push-pull rod 41 from below. The push-pull rod 41 is only provided with a limit post 414 on one side of the top. As a result, there is no interference between the push-pull rod 41 and the dynamic spring lead-out piece 53. Moreover, the extension plate 531 can be placed close to the push-pull rod 41 in the vertical direction, which is conducive to a miniaturized design.

[0051] In order to limit the reaction spring 512 in the inward and outward directions of the push-pull rod 41 (the length direction of the movable spring 51), the end of the reaction spring 512 is bent corresponding to the limiting column 414 to form an anti-slip bend 5121. In this embodiment, the end of the reaction spring 512 is bent approximately 90 degrees along the limiting column 414. The anti-slip bend 5121 cooperates with the limiting column 414 to limit the push-pull rod 41 in the outward direction. At the same time, the clearance opening 5111 can limit the rod body 415 of the push-pull rod 41 in the inward direction. In combination with the limit formed by the main movable spring 511 and the push-pull rod 41 in the up-down direction, a two-dimensional limit can be formed in the up-down and inward-outward directions, preventing the movable spring 51 from being separated from the push-pull rod 41 under the influence of external forces.

[0052] To prevent friction between the reaction spring 512 and the push-pull rod 41, in this embodiment, the anti-slip bend 5121 at the end of the reaction spring 512 is spaced apart from the rod body 415 of the push-pull rod 41 (except that the anti-slip bend 5121 and the limiting post 414 achieve positional limitation through surface contact). Furthermore, the end of the reaction spring 512 is spaced apart from the bottom of the slot 413, further preventing friction between the reaction spring 512 and the push-pull rod 41.

[0053] In this embodiment, the movable spring 51 comprises at least two stacked layers of sub-springs. The main movable spring 511 comprises at least one layer of sub-springs. The end of the layer of sub-springs closest to the pull block 411 is folded toward the pull block 411, forming a reinforcement portion 5115. The pull block 411 and the main movable spring 511 contact the folded portion, i.e., the reinforcement portion 5115. The folded ends of the sub-springs increase rigidity at this folded location, facilitating rapid contact disconnection. Furthermore, the folded portion forms a smooth curved surface. Even if scraped against the pull block 411 during assembly, this prevents debris from being generated, preventing contamination of the relay during production and ensuring high product yield. The end of the other layer of sub-springs is bent and tilted, forming a reaction spring 512.

[0054] The main active spring 511 comprises two layers of sub-springs: a first sub-spring 5113 and a second sub-spring 5114. The first sub-spring 5113 and the second sub-spring 5114 are almost completely joined together, with the end of the first sub-spring 5113 near the pull block 411 being folded over. The front half of the third sub-spring 5122, which forms the reaction spring 512, is joined to the second sub-spring 5114, while the rear half of the third sub-spring 5122 is bent and tilted away from the second sub-spring 5114, forming the reaction spring 512.

[0055] In order to achieve a faster and more powerful breaking action, the pulling block 411 and the card slot 413 are staggered. A bending section 416 is set at the end of the push-pull rod 41, the pulling block 411 is set at the end of the bending section 416, and the card slot 413 is opened in the bending section 416. Since the pulling block 411 is misaligned with the slot 413, the point of action of the pulling block 411 when disconnecting the movable spring 51 is offset from the point of action of the slot 413 when closing the movable spring 51. The distance between the point of action of the slot 413 pushing the movable spring 51 and the point of action of the pulling block 411 pulling the movable spring 51 open to the contact point of the contact system can be adjusted, so as to adjust the force arm from the pushing point to the contact point of the contact system during action and reset, increase the breaking force of the push-pull rod 41, and thus improve the ability to resist burnout of the contact system and increase the electrical life when the relay is actuated; when the relay is reset, the force arm from the pulling point of the pulling block 411 to the contact point of the contact system is shorter, and its stiffness is higher, so that the energy of the magnetic circuit system can be quickly and directly applied to the contact point of the contact system, reducing the buffering effect of the movable spring 51, thereby effectively improving the stiffness and explosive force when breaking the contact system, thereby achieving rapid and powerful disconnection of the contact system.

[0056] In this embodiment, the contact surface 521 of the moving contact 52 is set to a spherical surface. Through the contact with the static contact 62 through the spherical surface, it can be ensured that after disconnection, the shortest distance between the moving contact 52 and the static contact 62 is located at the center of the moving contact 52 and the static contact 62, ensuring that the arc is located at the center of the moving contact 52 and the static contact 62 to prevent outward deviation.

[0057] Example 2

[0058] The difference between this embodiment and the first embodiment is that the width of the slot 413 is different. Figure 9 、 Figure 10 As shown, in this embodiment, the connection between the slot 413 and the reaction spring 512 is a clearance fit. That is, when the reaction spring 512 is disposed within the slot 413, the width of the slot 413 is such that there is a certain gap between the blocking surface 4132 and the reaction spring 512, thereby achieving clearance installation. Furthermore, to ensure that the rebound distance is within a predetermined range, a slight gap is provided between the blocking surface 4132 of the slot 413 and the reaction spring 512. This minimizes rebound while facilitating assembly.

[0059] In specific implementations, the maximum amplitude of the reaction spring 512 in an unrestricted state is affected by all relevant factors, including the performance of the magnetic circuit system, the operating efficiency of the push-pull rod 41, the physical parameters of the movable spring 51 (determined by factors such as material and size), and so on. Consequently, when implemented in specific products, the maximum amplitude of the reaction spring 512 in an unrestricted state may vary between products of different specifications. However, under the technical guidance of the present invention, those skilled in the art, through limited experiments or theoretical deductions, can determine the width of the slot 413 and the specifications and parameters of the reaction spring 512, so as to minimize the rebound distance while achieving a clearance fit.

[0060] In this embodiment, in order to facilitate the insertion of the reaction spring 512 into the slot 413, the width of the slot 413 should not be too small, and a certain width still needs to be set. When the width of the slot 413 is determined, in order to reduce the rebound distance, the height of the blocking surface 4132 is set to be higher than the pushing surface 4131, as shown in FIG. Figure 11 Because the reaction spring 512 is tilted in the slot 413, the higher blocking surface 4132 can contact and abut the reaction spring 512 earlier, that is, when the reaction spring 512 rebounds a shorter distance, it contacts and abuts the reaction spring 512 to complete the position limiting.

[0061] The other parts are the same as those in the first embodiment.

[0062] The above embodiments are only used to illustrate the present invention and are not intended to limit the present invention. As long as they are based on the technical essence of the present invention, any changes or modifications to the above embodiments will fall within the scope of the claims of the present invention.

Claims

1. A relay for reducing contact jitter, comprising a push-pull rod, a movable spring portion, and a static spring portion, wherein the movable spring portion includes a movable spring leaf and a movable contact, and the static spring portion includes a static spring leaf and a static contact, wherein the movable spring leaf and the static spring leaf are respectively arranged in corresponding positions; the root of the movable spring leaf is fixed, and the push-pull rod cooperates with the end of the movable spring leaf to drive the end of the movable spring leaf to move; characterized in that: The dynamic spring includes a main dynamic spring and a reaction spring. The end of the sub-spring forming the reaction spring in the dynamic spring is bent and tilted as a whole in a direction away from the main dynamic spring to form the reaction spring. The dynamic contact is arranged on one side of the main dynamic spring and is located between the root and the end of the sub-spring forming the reaction spring in the dynamic spring. The reaction spring is arranged on the other side; the push-pull rod is provided with a pulling block that cooperates with the main dynamic spring and is used to pull the main dynamic spring; the push-pull rod is provided with a slot corresponding to the reaction spring, and the end of the reaction spring is arranged in the slot, which is used to push the reaction spring and limit the amplitude of the reaction spring.

2. The relay for reducing contact bounce according to claim 1, characterized in that: The pulling block and the clamping slot are staggered, a bending section is provided at the end of the push-pull rod, the pulling block is provided at the end of the bending section, and the clamping slot is opened in the bending section.

3. The relay for reducing contact bounce according to claim 1 or 2, characterized in that: The reaction spring is arranged in the slot, and the maximum width margin for the reaction spring to vibrate between the side wall of the slot and the reaction spring is smaller than the maximum amplitude of the reaction spring in an unrestricted state when the relay is actuated.

4. The relay for reducing contact bounce according to claim 3, characterized in that: The slot has two side walls, which are a blocking surface and a pushing surface. The blocking surface is located between the pushing surface and the pulling block. The amplitude of the reaction spring is limited by the blocking surface.

5. The relay for reducing contact bounce according to claim 4, characterized in that: The reaction spring is tightly matched with the slot.

6. The relay for reducing contact bounce according to claim 4, characterized in that: The reaction spring and the slot are clearance-matched, and the height of the blocking surface is set to be higher than the pushing surface.

7. The relay for reducing contact bounce according to claim 5 or 6, characterized in that: The end of the main body moving spring is grooved along the center line to form two contact moving springs, and the two moving contacts are respectively arranged on the contact moving springs; corresponding to the two contact moving springs, the push-pull rod is provided with two pulling blocks, forming a "T"-shaped structure.

8. The relay for reducing contact bounce according to claim 7, characterized in that: The pulling block is provided with a convex burl protruding toward the contact moving spring piece in correspondence with the contact moving spring piece.

9. The relay for reducing contact bounce according to claim 7, characterized in that: The end of the main body movable spring piece is provided with a clearance opening at the slotted position, and the clearance opening is sleeved on the rod body of the push-pull rod.

10. The relay for reducing contact bounce according to claim 1, characterized in that: The main moving spring piece presses against the pulling block; when the reaction force spring piece is clamped in the clamping slot, the reaction force spring piece forms elastic compression toward the main moving spring piece.

11. The relay for reducing contact bounce according to claim 1 or 10, characterized in that: The end of the reaction spring is spaced apart from the bottom of the slot.

12. The relay for reducing contact bounce according to claim 1, characterized in that: The dynamic spring part also includes a dynamic spring lead-out piece, the root of the dynamic spring lead-out piece is connected to the root of the dynamic spring piece, and the end of the dynamic spring lead-out piece extends forward over the push-pull rod to form a staggered intersection with the push-pull rod.

13. The relay for reducing contact bounce according to claim 12, characterized in that: The end of the dynamic spring lead-out piece forms a narrowed extension plate through a step structure. The extension plate passes over the push-pull rod from the bottom. A limiting column is provided on the upper side of the push-pull rod. The end of the reaction spring piece is bent corresponding to the limiting column and maintains a distance from the rod body and the limiting column of the push-pull rod.

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