The electromagnetic relay's push-lock and moving spring assembly structure and magnetic latching relay

Abstract

This invention discloses a drive card and moving spring portion cooperation structure for an electromagnetic relay and a magnetic latching relay. The cooperation structure includes a drive card and a moving spring portion. The moving spring portion includes a moving spring sheet and a moving contact disposed on the moving spring sheet. The drive card has a slot with an opening at one end. The moving spring sheet cooperates with the slot of the drive card along the opening of the slot in its width direction. The slot is open on one side in the thickness direction of the drive card to avoid the moving spring sheet, and the other side of the slot is fully or partially closed in the thickness direction of the drive card. This invention prevents the portion of the drive card that has a moving spring sheet from forming an isolated cantilever, thereby greatly improving the strength of the portion of the drive card that has a moving spring sheet, and can prevent or reduce deformation of the drive card under stress.

Description

Technical Field

[0001] This invention relates to the field of electromagnetic relays, and in particular to a mechanism for the engagement of a push card and a moving spring in an electromagnetic relay, and a magnetic latching relay. Background Technology

[0002] A prior art electromagnetic relay utilizes a push-lock connection between a moving spring in the contact portion and an armature in the magnetic circuit portion. When the armature actuates, it drives the moving spring via the push-lock, causing the moving contact on the moving spring to contact or separate from the stationary contact on the stationary spring. The existing electromagnetic relay's push-lock and moving spring cooperation structure is as follows: Figure 1 , Figure 2 As shown, the push card 1' has a slot 11' that extends through its thickness. One end of the slot 11' has an opening. The movable spring 2' engages with the slot 11' of the push card along the opening of the slot 11' in its width direction. Therefore, the part of the push card 1' that pulls the spring 2' forms a straight cantilever 12'. When the contact is open, the cantilever 12' of the push card is subjected to force and is prone to deformation, especially under high temperature conditions. After the cantilever 12' deforms under force, the position of pulling the spring 2' changes from vertical to tilted, making the force engagement point between the push card 1' and the movable spring 2' unclear, thus causing the push card 1' to be unable to effectively pull the movable spring 2'. Summary of the Invention

[0003] This invention addresses the technical problems existing in the prior art by providing a structure for the engagement of the push card and the moving spring in an electromagnetic relay, as well as a magnetic latching relay. By improving the structure of the push card, the deformation of the push card under force is reduced.

[0004] The technical solution adopted by the present invention to solve its technical problem is: a push card and moving spring part of an electromagnetic relay, the moving spring part including a moving spring sheet and a moving contact disposed on the moving spring sheet; the push card is provided with a slot, one end of the slot is provided with an opening, the moving spring sheet cooperates with the slot of the push card along the opening of the slot in its width direction; the slot is open on one side in the thickness direction of the push card to avoid the moving spring sheet, and the slot is fully closed or partially closed on the other side in the thickness direction of the push card.

[0005] Furthermore, a semi-enclosed body is integrally formed or fixedly connected to one side of the thickness of the push card. The semi-enclosed body is located outside the card slot on the other side in the thickness direction of the push card and spans the card slot, so that the other side of the card slot in the thickness direction of the push card is fully enclosed or partially enclosed.

[0006] Furthermore, the slot is provided with a protruding structure on one inner side of the spring; the protruding structure includes a plurality of protrusions spaced apart along the width direction of the moving spring.

[0007] Furthermore, the card slot is partially closed on the other side in the thickness direction of the push card, and one end of the moving spring is provided with a first bend that bends toward the thickness side of the moving spring. The first bend is located outside the partially closed side of the card slot and hooks onto the thickness side of the push card.

[0008] Furthermore, the first bending portion is bent at 90°, and the side of the moving spring sheet to which the first bending portion bends is the same as the side of the moving spring sheet to which the moving contact is located.

[0009] Furthermore, a spring sheet is provided on the side of the movable spring sheet facing away from the movable contact. There is a gap between the free end of the spring sheet and the movable spring sheet. The free end of the spring sheet is inserted into the slot, and the spring sheet is in a pre-compressed state, so that the movable spring sheet and the spring sheet respectively contact the two inner sides of the slot in the direction of pushing the card thickness.

[0010] Furthermore, the movable spring has a first clearance notch on one side in its width direction, the position of which corresponds to the position of the other end of the slot; there is a gap between the other end of the slot and one side of the movable spring in its width direction; the other end of the slot is the end of the slot opposite to the opening.

[0011] Furthermore, the movable spring has a second bend on one or both sides in its width direction, which bends toward the thickness of the movable spring; the side to which the second bend bends is the same side as the side of the movable spring with the movable contact.

[0012] Furthermore, the movable spring includes a plurality of springs stacked along its thickness direction; a movable spring lead-out piece is connected to the side of the movable spring facing away from the movable contact, and a second clearance notch is provided at the position corresponding to the push card; the movable spring has an arched deformation portion, which protrudes along the thickness of the movable spring towards the side of the movable spring having the movable contact.

[0013] The present invention also provides a magnetic latching relay, including the push card and moving spring portion of the electromagnetic relay as described above.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. Since the card slot is open on one side of the thickness direction of the push card and fully or partially closed on the other side of the thickness direction of the push card, the part of the push card that moves the spring will not form an isolated cantilever, thereby greatly improving the strength of the part of the push card that moves the spring and preventing or reducing the deformation of the push card under force.

[0016] 2. The semi-enclosed body not only enables the card slot to be closed or partially closed on the other side of the card's thickness direction, but also makes the card slot have more space in the card's thickness direction and a larger contact area with the moving spring, thereby helping to further reduce the deformation of the card under force.

[0017] 3. The slot is provided with a protruding structure on one inner side of the spring, so that even if the push card is deformed by force, the protruding structure can make the force engagement point between it and the moving spring more clear.

[0018] 4. The first bending part enables the present invention to limit the push piece in a partially closed state on the other side of the card slot, preventing the push card from disengaging from the moving spring.

[0019] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments; however, the electromagnetic relay push card and moving spring part cooperation structure and magnetic latching relay of the present invention are not limited to the embodiments. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the actuator and moving spring of an existing electromagnetic relay in a mating state;

[0021] Figure 2 This is a schematic diagram of the structure of a push card in the existing technology;

[0022] Figure 3 This is a three-dimensional structural diagram of the push card and the moving spring in the mating state of the present invention. Figure 1 ;

[0023] Figure 4 This is a front view of the push card and the moving spring in the mating state of the present invention;

[0024] Figure 5 This is a three-dimensional structural diagram of the push card and the moving spring in the mating state of the present invention. Figure 2 ;

[0025] Figure 6 yes Figure 5 The main view;

[0026] Figure 7 This is a schematic diagram of the push card structure of the present invention. Figure 1 ;

[0027] Figure 8 This is a schematic diagram of the push card structure of the present invention. Figure 2 ;

[0028] Figure 9 This is a three-dimensional structural schematic diagram of the movable spring (including the movable spring lead-out piece) of the present invention;

[0029] Figure 10 This is a three-dimensional structural schematic diagram of the magnetic latching relay of the present invention (excluding the housing);

[0030] Figure 11 This is a schematic diagram of the cooperation between the magnetic circuit portion and the contact portion of the magnetic latching relay of the present invention. Figure 1 ;

[0031] Figure 12 This is a schematic diagram of the cooperation between the magnetic circuit portion and the contact portion of the magnetic latching relay of the present invention. Figure 2 ;

[0032] Figure 13 This is a schematic diagram of the cooperation between the magnetic circuit portion and the contact portion of the magnetic latching relay of the present invention. Figure 2 . Detailed Implementation

[0033] Please see Figures 3-9 As shown, the present invention discloses a push-card and moving spring portion cooperation structure of an electromagnetic relay, comprising a push-card 1 and a moving spring portion. The moving spring portion includes a moving spring plate 2 and a moving contact 3 disposed on the moving spring plate 2. The push-card 1 has a slot 11 with an opening at one end. The moving spring plate 2 engages with the slot 11 of the push-card 1 along the opening of the slot 11 in its width direction. One side of the slot 11 in the thickness direction of the push-card 1 is open to avoid the moving spring plate 2. The other side of the slot 11 in the thickness direction of the push-card 1 is fully or partially closed to prevent the portion of the push-card 1 that pulls the spring plate 2 from forming an isolated cantilever, thereby greatly improving the strength of the portion of the push-card 1 that pulls the spring plate 2 and preventing or reducing deformation of the push-card 1 under force. One side of the slot 11 in the thickness direction of the push-card 1 is close to the moving contact 3, while the other side of the slot 11 in the thickness direction of the push-card 1 is away from the moving contact 3. The slot 11 faces the moving contact 3 on one side in the thickness direction of the push card 1, and the other side of the slot 11 faces away from the moving contact 3 in the thickness direction of the push card 1, corresponding to the outer side of the tail end of the moving spring. The term "partially closed" means that the other side of the slot 11 in the thickness direction of the push card 1 is not completely closed. The width direction of the moving spring is... Figure 3 In the three-dimensional coordinate system, the Z-axis corresponds to the thickness direction of the moving spring 2, which corresponds to the X-axis; the length direction of the moving spring corresponds to the Y-axis; and the thickness direction of the push card 1 corresponds to the Y-axis.

[0034] In this embodiment, a semi-enclosed body 12 is integrally formed on one side of the thickness of the push card 1. This semi-enclosed body 12 is located outside the card slot 11 on the other side in the thickness direction of the push card 1, and spans the card slot 11, so that the other side of the card slot 11 in the thickness direction of the push card 1 (hereinafter referred to as the other side of the card slot 11) is closed or partially closed. Specifically, the semi-enclosed body 12 is located in the upper middle part of the push card 1, making the upper middle part of the other side in the thickness direction of the push card 1 closed, while the lower part of the other side in the thickness direction of the push card 1 is open. Figure 6 As shown, the upper middle part of the other side of the card slot 11 is partially closed. In other embodiments, the semi-enclosed body extends from the other end of the card slot to one end of the card slot, making the other side of the card slot completely closed. The other end of the card slot 11 refers to the end of the card slot 11 opposite to the opening.

[0035] In this embodiment, the slot 11 is used to pull the inner side of the spring 2, which has a protruding structure; the protruding structure includes a plurality of protrusions 13 spaced apart along the width direction of the moving spring 2, such as Figure 7 As shown. In other embodiments, the protruding structure is an elongated rib arranged along the width direction of the movable spring.

[0036] In this embodiment, one end of the movable spring 2 along its length is provided with a first bent portion 21 that bends towards the thickness of the movable spring 2. This first bent portion 21 is located outside the partially closed side of the slot 11 and hooks onto the thickness of the push card 1. Specifically, the first bent portion 21 is located below the semi-enclosed body 12. The first bent portion 21 is bent at 90°, and the side of the movable spring 2 towards which the first bent portion 21 bends is the same side as the side of the movable spring 2 where the movable contact 3 is located. The first bent portion 21 can limit the push card 1 along the length of the movable spring 2, preventing the push card 1 from detaching from the movable spring 2.

[0037] In this embodiment, as Figure 8 As shown, the movable spring 2 has a long notch 22 extending along its length in the middle, which divides the movable spring 2 into two upper and lower support plates 23 connected at their roots. Each of the two support plates 23 has a movable contact 3. The first bent portion 21 is located on the support plate at the end furthest from the slot. Specifically, the first bent portion 21 is located on the lower support plate. The number of protrusions 13 is two, corresponding one-to-one with the two support plates 23.

[0038] In this embodiment, the movable spring 2 has a first clearance notch 24 on one side of its width direction, and the position of the first clearance notch 24 corresponds to the position of the other end of the slot 11. The first clearance notch 24 is specifically provided on the support piece. There is a gap between the other end of the slot 11 and one side of the movable spring 2 in its width direction, so that the side of the movable spring 2 in its width direction will not rub against the push card 1 and cause the push card 1 to generate plastic debris.

[0039] In this embodiment, the movable spring 2 has a second bent portion 25 on one or both sides of its width direction, bending towards the thickness of the movable spring 2; the side to which the second bent portion 25 bends is the same as the side of the movable spring 2 where the movable contact 3 is located. The second bent portion 25 is located near one end of the movable spring in the length direction, and there are specifically two second bent portions 25, one of which is located on the upper support plate and the other of which is located on the lower support plate, as shown below. Figure 8 As shown. The second bending portion 25 is provided to improve the strength of the moving spring 2.

[0040] In this embodiment, the movable spring 2 includes multiple springs stacked along its thickness direction. A movable spring lead-out piece 4 is connected to the side of the movable spring 2 facing away from the movable contact 3. The movable spring lead-out piece 4 has a second clearance notch at the position corresponding to the push card 1. The first bending portion 21 and the second bending portion 25 are specifically located on the spring 2 furthest from the movable spring lead-out piece 4. The movable spring lead-out piece 4 has an arched deformation portion that protrudes along the thickness of the movable spring 2 towards the side of the movable spring 2 where the movable contact 3 is located. The other end of the movable spring 2 in the length direction is riveted and fixed to the movable spring lead-out piece 4. The arched deformation portion is near the connection point between the movable spring 2 and the movable spring lead-out piece 4, and the movable contact 3 is near one end of the movable spring 2 in the length direction.

[0041] In this embodiment, a spring piece 5 is provided on the side of the movable spring 2 facing away from the movable contact 3. There is a gap between the free end of the spring piece 5 and the movable spring 2. The free end of the spring piece 2 is inserted into the slot 11, and the spring piece 5 is in a pre-compressed state, causing the movable spring 2 and the spring piece 5 to respectively contact the two inner sides of the slot 11 in the thickness direction of the push card 1. When the movable spring portion is inserted into the push card 1, the spring piece 5 of the movable spring portion will be pre-compressed and cooperate with the push card 1 to form a certain clamping force, which can effectively prevent the movable spring portion from shaking inside the slot 11. Under the action of this clamping force, a certain dynamic pressure will be instantaneously generated at the moment the contact closes, achieving the effect of instantaneous pressurization. Simultaneously, the existence of spring piece compression deformation helps the push card 2 pull the movable spring 1 to disconnect when the contact is opened. This invention discloses a mechanism for the engagement of a push card and a moving spring in an electromagnetic relay. The structure of the push card 1 is improved by making one side of its slot 11 open in the thickness direction of the push card 1, while the other side is fully or partially closed. This prevents the portion of the push card 1 that pulls the spring 2 from forming an isolated cantilever, while also increasing the strength of the slot and reducing deformation. This significantly improves the strength of the portion of the push card 1 that pulls the spring 2, preventing or reducing deformation of the push card 1 under high-temperature conditions. Specifically, the semi-enclosed body 12 not only allows for a fully or partially closed design on the other side of the slot 11, but also increases the space of the slot 11 in the thickness direction of the push card 1, resulting in a larger contact area with the moving spring 2, further reducing deformation of the push card 1 under stress. The protruding structure clearly defines the engagement point between the push card 1 and the moving spring 2. Even if the push card 1 deforms under stress, the protruding structure ensures a clearer engagement point between them.

[0042] Please see Figure 9 Figure 13 As shown, a magnetic latching relay of the present invention includes a push-lock and moving spring portion cooperation structure as described above for an electromagnetic relay of the present invention. The magnetic latching relay of the present invention also includes a base 10, a housing (not shown in the figure), a stationary spring portion (the stationary spring portion includes a stationary spring 8 and a stationary contact 9 disposed on the stationary spring 8), an electromagnetic assembly 6, and an armature assembly 7. The moving spring 2, the stationary spring 8, and the electromagnetic assembly 6 are respectively disposed at corresponding cooperation positions on the base 10, and the electromagnetic assembly 6 is horizontal. The armature assembly 7 is rotatably connected to the base 5 and cooperates with one side of the electromagnetic assembly 6. The armature assembly 7 cooperates with the moving spring 2 through the push-lock 1. The electromagnetic assembly 6 and the armature assembly 7 constitute the magnetic circuit portion of the magnetic latching relay of the present invention, and the moving spring 2 and the stationary spring 8 constitute the contact portion of the magnetic latching relay of the present invention.

[0043] The present invention relates to a magnetic latching relay. For details regarding the structure and principle of the electromagnetic relay's push card and moving spring, please refer to the preceding description and will not be repeated here.

[0044] The present invention relates to a drive card and moving spring cooperation structure for an electromagnetic relay and a magnetic latching relay. The parts not described herein are the same as or can be implemented using existing technologies.

[0045] The above embodiments are only used to further illustrate the cooperation structure of the push card and moving spring of an electromagnetic relay and a magnetic latching relay of the present invention. However, the present invention is not limited to the embodiments. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention shall fall within the protection scope of the technical solution of the present invention.

Claims

1. A structure for cooperating between a push card and a movable spring portion of an electromagnetic relay, comprising a push card and a movable spring portion, wherein the movable spring portion includes a movable spring sheet and a movable contact disposed on the movable spring sheet; the push card has a slot, one end of which has an opening, and the movable spring sheet cooperates with the slot of the push card along the opening of the slot in its width direction; characterized in that: The card slot is open on one side in the thickness direction of the push card to avoid the moving spring, and the card slot is partially closed on the other side in the thickness direction of the push card. The thickness side of the push card is integrally formed or fixedly connected with a semi-enclosed body, which is located outside the card slot on the other side in the thickness direction of the push card, so that the card slot on the other side in the thickness direction of the push card is partially closed. One end of the movable spring in the length direction has a first bend that bends towards the thickness of the movable spring. This first bend is located outside the other side of the partially closed slot and hooks onto the thickness of the push card. The movable spring has a long strip notch extending along its length in the middle, which divides the movable spring into two branches connected at their roots. The movable contact is provided on each of the two branches. The first bend is located on one of the branches away from the other end of the slot, and the semi-enclosed body is located on the side of the first bend closer to the other end of the slot. The other end of the slot is the end of the slot opposite to the opening.

2. The structure of the electromagnetic relay with the push card and the moving spring as described in claim 1, characterized in that: The semi-enclosed body spans the slot.

3. The structure of the electromagnetic relay with the push card and the moving spring as described in claim 1, characterized in that: The slot is used to pull the inner side of the spring, which has a raised structure; the raised structure includes a plurality of protrusions spaced apart along the width direction of the moving spring.

4. The structure of the electromagnetic relay with the push card and the moving spring as described in claim 1, characterized in that: The first bend is 90°, and the side of the first bend that bends toward the thickness of the moving spring is the same side of the moving spring where the moving contact is located.

5. The structure of the electromagnetic relay with the push card and the moving spring as described in claim 1, characterized in that: A spring sheet is provided on the side of the movable spring sheet facing away from the movable contact. There is a gap between the free end of the spring sheet and the movable spring sheet. The free end of the spring sheet is inserted into the slot and the spring sheet is in a pre-pressed state, so that the movable spring sheet and the spring sheet respectively contact the two inner sides of the slot in the direction of pushing the card thickness.

6. The structure of the electromagnetic relay with the push card and the moving spring as described in claim 1, characterized in that: The movable spring has a first clearance notch on one side in its width direction, and the position of the first clearance notch corresponds to the position of the other end of the slot; there is a gap between the other end of the slot and one side of the movable spring in its width direction.

7. The structure of the electromagnetic relay with the push card and the moving spring as described in claim 1, characterized in that: The movable spring has a second bend on one or both sides in its width direction, which bends toward the thickness of the movable spring; the side to which the second bend bends is the same side of the movable spring where the movable contact is located.

8. The structure of the electromagnetic relay with the actuator and the moving spring in accordance with any one of claims 1, 2, 3, or 5-7, characterized in that: The movable spring includes a plurality of springs stacked along its thickness direction; a movable spring lead-out piece is connected to the side of the movable spring facing away from the movable contact, and a second clearance notch is provided at the position corresponding to the push card; the movable spring has an arched deformation portion, which protrudes along the thickness of the movable spring towards the side of the movable spring having the movable contact.

9. A magnetic latching relay, characterized in that: The electromagnetic relay includes a push card and a moving spring portion with a structure as described in any one of claims 1-8.

Images