Pushing mechanism and relay

Abstract

The utility model provides a pushing mechanism and a relay, the pushing mechanism comprises a moving contact support, the moving contact support comprises an upper stop plate, a lower base, a left side plate and a right side plate, the upper stop plate and the lower base are arranged at an interval up and down, and the left side plate and the right side plate are respectively connected to two sides of the upper stop plate and the lower base in the length direction; wherein the upper stop plate is provided with a bending-resistant reinforcing structure. Therefore, the anti-deformation capability of the upper stop plate can be enhanced, the upper stop plate is effectively prevented from being deformed under the action of external force, and the stability of a product is well ensured.

Description

Technical Field

[0001] The utility model relates to the field of relays, and particularly relates to a pushing mechanism and a relay. Background Art

[0002] A relay is an electromagnetic switch that controls the on / off of a large current through the on / off of a small current, and is widely used in new energy fields such as electric vehicles, charging piles, photovoltaic, and energy storage. A high-voltage DC relay is a type of relay. Most existing high-voltage DC relays adopt a structure with a directly moving moving contact, that is, two static contacts are used in cooperation with a moving contact. At the same time, as Figure 1 shown, the moving contact 6 is assembled in the "mouth"-shaped moving contact bracket 1, and is connected to the lower base 3 of the moving contact bracket 1 through a spring 4. The bottom of the upper stop piece 2 of the moving contact bracket 1 is assembled with an upper yoke iron 5, and the moving contact 6 abuts against the upper yoke iron 5 under the action of the spring 4 to achieve limit.

[0003] In the prior art, the upper stop piece 2 is a flat sheet-like structure, and the upper stop piece 2 is prone to deformation under the action of external force. For example, in actual production, the upper stop piece 2 is generally fixed to the side plates on both sides by riveting. When riveting, inward forces are applied on both sides, which easily squeezes and deforms the upper stop piece 2. As Figure 2 shown, under the action of the external forces applied during riveting on both sides, the middle position of the upper stop piece 2 bends downward and deforms; resulting in a gap at the riveting position between the upper stop piece 2 and the upper yoke iron 5, reducing the connection strength. In severe cases, the upper yoke iron 5 falls off, resulting in the loss of the function of the component and the product being unusable. Summary of the Utility Model

[0004] Therefore, in order to solve the problem that the strength of the moving contact bracket is insufficient and it is prone to deformation, the utility model provides a pushing mechanism and a relay.

[0005] To achieve the above object, the technical solution provided by the utility model is as follows:

[0006] A pushing mechanism includes a moving contact bracket. The moving contact bracket includes an upper stop piece, a lower base, a left side plate, and a right side plate. The upper stop piece and the lower base are arranged at an interval up and down, and the left side plate and the right side plate are respectively connected to both sides in the length direction of the upper stop piece and the lower base; wherein, the upper stop piece has a reinforcing structure for resisting bending.

[0007] Further, the reinforcing structure is a rib protruding from the surface of the upper stop piece and extending along its length direction.

[0008] Further, the rib is integrally formed by stamping the upper stop piece.

[0009] Further, the rib extends at least to the middle position in the length direction of the upper stop piece.

[0010] Furthermore, the number of the convex ribs is one or more, and when the number is one, the convex rib is located in the middle of the width direction of the upper stop plate.

[0011] Furthermore, the reinforcement structure is a flange provided on at least one side of the upper retaining plate in the width direction, and the flange extends along the length direction of the upper retaining plate.

[0012] Furthermore, the flange extends at least to the middle position of the upper stopper in the length direction.

[0013] Furthermore, both sides of the upper stopper in the width direction have flanges.

[0014] Furthermore, the upper stopper is integrally connected to the left side plate and the right side plate on both sides.

[0015] Furthermore, the upper stopper is fixed to the left side plate and the right side plate on both sides by riveting.

[0016] Furthermore, the left side plate and the right side plate are both provided with sockets, and the upper stopper is provided with riveted protrusions at both ends in the length direction, and the riveted protrusions are inserted into the sockets and riveted fixed.

[0017] Furthermore, the pushing mechanism also includes a moving contact, an upper yoke, a lower yoke and a spring, wherein the upper yoke is assembled on the lower surface of the upper stopper, the lower yoke is assembled on the moving contact, the moving contact is assembled in the "mouth" shaped frame of the moving contact bracket, and is connected to the lower base through a spring, and the lower base is used to connect the pushing rod

[0018] A relay at least comprises the above-mentioned driving mechanism.

[0019] The technical solution provided by the utility model has the following beneficial effects:

[0020] Providing an anti-bending reinforcement structure on the upper stop plate can enhance the upper stop plate's ability to resist deformation, effectively prevent deformation when subjected to external force, reduce the displacement of the moving contact and / or upper yoke (magnetic conductive part) caused by the deformation of the bracket, and thereby reduce the risk of loss of component function due to poor contact between the moving and static contacts, thereby ensuring the stability of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 Shown is a schematic diagram of a propulsion mechanism in the prior art;

[0022] Figure 2 Shown Figure 1 Schematic diagram of abnormal structure during riveting operation;

[0023] Figure 3 Shown is a schematic structural diagram of the moving contact bracket in Example 1;

[0024] Figure 4 FIG. 1 is a schematic diagram of the three-dimensional structure of the upper stopper in the first embodiment;

[0025] Figure 5 Shown is a top view of the upper stopper in Example 1;

[0026] Figure 6 The figure shows a partial structural exploded schematic diagram of the moving contact bracket in the first embodiment;

[0027] Figure 7 FIG. 1 is a schematic diagram of the three-dimensional structure of the pushing mechanism in the first embodiment;

[0028] Figure 8 Shown is a cross-sectional view of the pushing mechanism in Example 1;

[0029] Figure 9 FIG. 1 is a schematic diagram of the three-dimensional structure of the upper stopper in the second embodiment;

[0030] Figure 10 FIG. 1 is a schematic diagram of the three-dimensional structure of the pushing mechanism in the second embodiment;

[0031] Figure 11 FIG. 1 is a schematic diagram of the three-dimensional structure of the upper stopper in the third embodiment;

[0032] Figure 12 FIG. 1 is a schematic diagram of the three-dimensional structure of the pushing mechanism in the third embodiment;

[0033] Figure 13 Shown is a partial structural schematic diagram of the moving contact bracket in the fourth embodiment;

[0034] Figure 14 Shown is a partial structural schematic diagram of the moving contact bracket in other embodiments;

[0035] Figure 15 Shown is a partial structural schematic diagram of a moving contact bracket in yet another embodiment. DETAILED DESCRIPTION

[0036] To further illustrate various embodiments, the present invention is provided with accompanying drawings. These drawings form part of the disclosure of this invention and are primarily used to illustrate the embodiments and, in conjunction with the relevant description in the specification, to explain the operating principles of the embodiments. By referring to these drawings, those skilled in the art will understand other possible implementations and the advantages of this invention. The components in the figures are not drawn to scale, and similar reference numerals are generally used to represent similar components.

[0037] In the description of the present invention, terms such as "up", "down", "left", "right", "front", and "back" and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, they should not be understood as limiting the present invention.

[0038] The present invention will now be further described with reference to the accompanying drawings and specific implementation methods.

[0039] Example 1

[0040] Reference Figures 3 to 6 As shown, a pushing mechanism provided in this embodiment includes a moving contact bracket, which includes an upper stopper 11, a lower base 12, a left plate 13 and a right plate 14. The upper stopper 11 and the lower base 12 are arranged in an upper and lower interval, and the left plate 13 and the right plate 14 are respectively connected to both sides of the length direction of the upper stopper 11 and the lower base 12, as shown in FIG. Figure 3 and Figure 5 As shown, the length direction of the upper stopper 11 is the X-axis direction (also defined as the left-right direction), the width direction of the upper stopper 11 is the Y-axis direction (also defined as the front-back direction), and the height direction of the upper stopper 11 is the Z-axis direction (also defined as the up-down direction). Specifically, the left side plate 13 and the right side plate 14 are both vertical plates. The movable contact bracket forms a "U"-shaped frame. The upper stopper 11 is used to mount the upper yoke 21.

[0041] In this embodiment, the lower base 12 includes a bottom plate 121 and a plastic part 122 connected to the bottom plate 121 by injection molding, wherein the bottom plate 121, the left side plate 13 and the right side plate 14 are an integrally connected structure to form a U-shaped part; wherein the plastic part 122 is also connected to the push rod 30 of the relay by injection molding.

[0042] The upper stopper 11 is fixed to the left side plate 13 and the right side plate 14 on both sides by riveting; specifically, the left side plate 13 and the right side plate 14 are provided with sockets (specifically the left side socket 131 and the right side socket 141), and the upper stopper 11 is provided with riveted protrusions 113 at both ends in the length direction, and the riveted protrusions 113 are inserted into the sockets (the left side socket 131 and the right side socket 141) and riveted fixed.

[0043] The upper stopper 11 has a reinforcing structure to resist bending. Specifically, in this embodiment, the reinforcing structure is a rib 111 protruding from the surface of the upper stopper 11 and extending along its length. The rib 111 protruding from the surface of the upper stopper 11 can be protruding from the upper surface of the upper stopper 11 or the lower surface of the upper stopper 11. Preferably, because the lower surface of the upper stopper 11 needs to be assembled with the upper yoke 21, the rib 111 protrudes from the upper surface of the upper stopper 11. In addition, the rib 111 is integrally formed from the upper stopper 11 by stamping, which is simple to manufacture.

[0044] Specifically, the upper stop plate 11 is provided with a fixing hole 114 for connecting to the upper yoke. In this embodiment, there is one rib 111 located in the middle of the width direction of the upper stop plate 11, and the fixing holes 114 are distributed on both sides of the width direction of the rib 111 to achieve a reasonable distribution.

[0045] Since the upper stopper 11 is most likely to bend in the middle of its length direction, it is preferred that the rib 111 at least extends to the middle of the length direction of the upper stopper 11 to effectively prevent the upper stopper 11 from being bent in the middle of its length direction. Figure 4 and Figure 5 As shown, the extension length of the rib 111 substantially occupies about three quarters of the total length of the upper stopper 11 .

[0046] By setting the reinforcement structure of the above-mentioned upper stop plate 11, the deformation resistance of the upper stop plate 11 can be enhanced, and deformation when subjected to external force can be effectively prevented. For example, when the upper stop plate 11 is riveted and fixed, it can still be well maintained under the action of the extrusion force on the left and right sides, and is not easy to bend and deform, thereby reducing the displacement of the moving contact and / or the upper yoke 21 (magnetic conductive part) caused by the deformation of the bracket, thereby reducing the risk of loss of component function due to poor contact of the contacts, and well ensuring the stability of the product.

[0047] Of course, in other embodiments, when the upper stop plate 11 is reinforced by the ribs 111, it is not limited to the above-mentioned settings. When there is sufficient space for setting the upper stop plate 11, the longer the extension length of the ribs 111 or the greater the number, the better the reinforcement effect; therefore, a structure with multiple ribs 111 can also be set to achieve reinforcement.

[0048] Continue to refer to Figure 7 and Figure 8As shown, the push mechanism also includes a moving contact 22, an upper yoke 21, a lower yoke 23, and a spring 24. The upper yoke 21 is mounted on the lower surface of the upper stopper 11, and the lower yoke 23 is mounted on the moving contact 22. The moving contact 22 is mounted within the "mouth"-shaped frame of the moving contact bracket and connected to the lower base 12 via the spring 24. In the absence of external force, the moving contact 22 is driven by the spring 24 to press against the lower yoke 21, achieving a stopped position. The lower base 12 is used to connect to the push rod 30 of the magnetic circuit portion. Specifically, the push rod 30 is fixed by injection molding a plastic part 122.

[0049] This embodiment also provides a relay, which at least includes the above-mentioned driving mechanism.

[0050] Example 2

[0051] The pushing mechanism provided in this embodiment is substantially the same as that in the first embodiment, except that: Figure 9 、 Figure 10 As shown, in this embodiment, the reinforcement structure of the upper fixing member 11 is provided with flanges 112 provided on both sides (defined as the front and rear sides) in the width direction of the upper retaining piece 11. The flanges 112 extend along the length direction of the upper retaining piece 11. Similarly, to prevent the flanges 112 from affecting the underlying components (such as the movable contact 22), the flanges 112 are turned upward.

[0052] The provision of the flange 112 can also effectively enhance the strength of the upper fixing member 11 , thereby enhancing the deformation resistance of the upper stopper 11 , effectively preventing deformation when subjected to external forces, and ensuring the stability of the product.

[0053] Specifically, flanges 112 are provided on both sides of the upper stopper 11 in the width direction for better strength. Of course, in other embodiments, if the strength is sufficient, the flange 112 may be provided on only one side.

[0054] This embodiment also provides a relay, which at least includes the driving mechanism described in this embodiment.

[0055] Example 3

[0056] The pushing mechanism provided in this embodiment has a structure similar to that of the first embodiment, except that: on the basis of the structure of the first embodiment, the flange structure of the second embodiment is added, that is, in this embodiment, Figure 11 、 Figure 12 As shown, the reinforcement structure includes a rib 111 protruding from the surface of the upper stop plate 11 and extending along its length direction, and a flange 112 arranged on the front and rear sides of the width direction of the upper stop plate 11, and the flange 112 extends along the length direction of the upper stop plate 11.

[0057] With this arrangement, in the width direction, reinforcement structures are provided at the front, middle and rear of the upper stopper 11, and the strength thereof is better.

[0058] This embodiment also provides a relay, which at least includes the driving mechanism described in this embodiment.

[0059] Example 4

[0060] The pushing mechanism provided in this embodiment is substantially the same in structure as that in the first embodiment, except that: Figure 13 As shown, in this embodiment, the upper retaining plate 11 is integrally connected to the left and right plates 13 and 14 on either side. Specifically, the movable contact support is formed by bending a flat plate through a stamping process, simplifying the structural fabrication process. Furthermore, the raised ribs 111 on the upper retaining plate 11 effectively reinforce the plate, preventing deformation from external forces.

[0061] Furthermore, the pushing mechanism provided in this embodiment adopts the moving contact bracket of this embodiment; at the same time, compared with the first embodiment, the structure of the upper yoke 21 is missing, that is, the upper stopper 11 directly restricts the moving contact 22.

[0062] This embodiment also provides a relay, which at least includes the driving mechanism described in this embodiment.

[0063] The fourth embodiment disclosed that the upper stopper 11 is connected to the left side plate 13 and the right side plate 14 on both sides as an integral structure. Of course, based on this structure, as shown in FIG. Figure 14 As shown, the reinforcement structure of the upper stopper 11 can also be a flange 112. Figure 15 As shown, the reinforcement structure of the upper stopper 11 may also be a structure that uses both the rib 111 and the flange 112 , etc.; examples will not be given here one by one.

[0064] Although the present invention has been specifically shown and described in conjunction with the preferred embodiments, those skilled in the art should understand that various changes can be made to the form and details of the present invention without departing from the spirit and scope of the present invention as defined by the appended claims, and all of these changes are within the scope of protection of the present invention.

Claims

1. A pushing mechanism, comprising a movable contact support, the movable contact support comprising an upper stopper, a lower base, a left side plate, and a right side plate, wherein the upper stopper and the lower base are spaced apart from each other, and the left side plate and the right side plate are respectively connected to both sides of the upper stopper and the lower base in the longitudinal direction; characterized in that: The upper stopper has a reinforcing structure that resists bending.

2. The pushing mechanism according to claim 1, characterized in that: The reinforcement structure is a rib protruding from the surface of the upper stopper and extending along the length direction of the upper stopper.

3. The pushing mechanism according to claim 2, characterized in that: The convex rib is formed integrally by stamping the upper stopper.

4. The pushing mechanism according to claim 2, wherein: The convex rib extends at least to the middle position of the upper stopper in the length direction.

5. The pushing mechanism according to claim 2, characterized in that: The number of the convex ribs is one or more, and when the number is one, the convex rib is located in the middle of the width direction of the upper stopper.

6. The pushing mechanism according to claim 1 or 2, characterized in that: The reinforcement structure is a flange provided on at least one side of the upper retaining plate in the width direction, and the flange extends along the length direction of the upper retaining plate.

7. The pushing mechanism according to claim 6, characterized in that: The flange extends at least to the middle position of the upper stopper in the length direction.

8. The pushing mechanism according to claim 6, characterized in that: Both sides of the upper stopper in the width direction are provided with flanges.

9. The pushing mechanism according to claim 1, characterized in that: The upper stopper is integrally connected to the left side plate and the right side plate on both sides.

10. The pushing mechanism according to claim 1, characterized in that: The upper stopper is fixed to the left side plate and the right side plate on both sides by riveting.

11. The pushing mechanism according to claim 10, characterized in that: The left side plate and the right side plate are both provided with sockets, and the upper stopper is provided with riveted protrusions at both ends in the length direction. The riveted protrusions are inserted into the sockets and riveted fixed.

12. The pushing mechanism according to claim 1, characterized in that: The pushing mechanism also includes a moving contact, an upper yoke, a lower yoke and a spring. The upper yoke is assembled on the lower surface of the upper stop plate, and the lower yoke is assembled on the moving contact. The moving contact is assembled in the "mouth"-shaped frame of the moving contact bracket and is connected to the lower base through a spring. The lower base is used to connect the pushing rod.

13. A relay, characterized in that: At least includes the pushing mechanism described in any one of claims 1 to 12.

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