阅读说明：本技术 一种直动式高压直流继电器 (Direct-acting high-voltage direct-current relay ) 是由 钟叔明 陈金品 代文广 陈松生 于 2020-05-19 设计创作，主要内容包括：本发明公开了一种直动式高压直流继电器,包括两个静触头、桥式配合在两个静触头之间的动簧部分和与动簧部分相连接以推动动簧部分往返运动的推动杆组件；动簧部分包括一个直片型刚性动簧片和两个柔性动簧片,直片型刚性动簧片与推动杆组件相连接,两个柔性动簧片的下端分别固定在直片型刚性动簧片的两端,两个柔性动簧片的上端分别斜向交叉并伸向各自所对应的另一个静触头的下方,两个柔性动簧片的上端分别设有动触点以与两个静触头的底端对应相配合。本发明具有较好的抗短路能力和抗粘连能力,并具有结构简单,制作方便和制作成本低的特点。(The invention discloses a direct-acting high-voltage direct-current relay, which comprises two static contacts, a movable spring part matched between the two static contacts in a bridge manner and a push rod assembly connected with the movable spring part to push the movable spring part to move back and forth; the movable spring part comprises a straight piece type rigid movable spring piece and two flexible movable spring pieces, the straight piece type rigid movable spring piece is connected with the push rod assembly, the lower ends of the two flexible movable spring pieces are respectively fixed at the two ends of the straight piece type rigid movable spring piece, the upper ends of the two flexible movable spring pieces are respectively obliquely crossed and extend to the lower part of the other corresponding static contact, and the upper ends of the two flexible movable spring pieces are respectively provided with a movable contact to be correspondingly matched with the bottom ends of the two static contacts. The invention has better short circuit resistance and adhesion resistance, and has the characteristics of simple structure, convenient manufacture and low manufacture cost.)

1. A direct-acting high-voltage direct-current relay comprises two fixed contacts, a movable spring part matched between the two fixed contacts in a bridge mode and a push rod assembly connected with the movable spring part to push the movable spring part to move back and forth; the method is characterized in that: the movable spring part comprises a straight piece type rigid movable spring piece and two flexible movable spring pieces, the straight piece type rigid movable spring piece is connected with the push rod component to move along with the reciprocating motion of the push rod component, two ends of the straight piece type rigid movable spring piece respectively correspond to the lower parts of the two static contacts, the lower ends of the two flexible movable spring pieces are respectively fixed at two ends of the straight piece type rigid movable spring piece, the upper ends of the two flexible movable spring pieces are respectively obliquely crossed and extend to the lower parts of the other corresponding static contacts, the upper ends of the two flexible movable spring pieces are respectively provided with a movable contact to be correspondingly matched with the bottom ends of the two static contacts, so that an upward electromagnetic force is formed on each movable contact by utilizing a V-shaped structure formed by the two flexible movable spring pieces and the straight piece type rigid movable spring pieces respectively to resist a downward electric repulsive force formed on the movable contact due to short-circuit current when the movable contact is closed, meanwhile, the horizontal shearing force formed by the intersection of the two flexible movable reeds is utilized to promote the twisting of the matched movable and static contacts along the horizontal direction when the movable and static contacts are disconnected, so that the anti-adhesion capability is improved.

2. The direct-acting high-voltage direct-current relay according to claim 1, characterized in that: the movable contact is an independent part and is riveted and fixed at the upper end of the flexible movable reed; the upper part of the flexible movable spring leaf is provided with a first bending part which enables the upper end of the flexible movable spring leaf to be approximately horizontal.

3. Direct-acting high-voltage direct-current relay according to claim 1 or 2, characterized in that: the lower extreme of flexible movable reed is equipped with the second kink that is the U type, and the opening of the U type shape of second kink is towards the below.

4. A direct-acting high-voltage direct-current relay according to claim 3, characterized in that: and the side wall of one side of the outer side of the U-shaped shape of the second bending part of the flexible movable spring is fixed at the corresponding end of the straight piece type rigid movable spring in a roughly vertical mode.

5. The direct-acting high-voltage direct-current relay according to claim 1, characterized in that: the middle parts of the two flexible movable reeds are respectively provided with a yielding notch, and the yielding notches of the two flexible movable reeds are respectively in clearance opposite insertion so that the flexible movable reeds are in crossed distribution.

6. The direct-acting high-voltage direct-current relay according to claim 1, characterized in that: the angle between the upper parts of the two flexible movable reeds is more than 90 degrees.

7. The direct-acting high-voltage direct-current relay according to claim 1, characterized in that: the flexible movable spring plate is formed by stacking a plurality of leaf spring plates.

Technical Field

The invention relates to the technical field of relays, in particular to a direct-acting high-voltage direct-current relay.

Background

The relay is an electromechanical element widely applied to various household appliances, office equipment and industrial control. A high-voltage direct-current relay in the prior art adopts a movable spring direct-acting (also called solenoid direct-acting) structure, a contact part of the high-voltage direct-current relay comprises two static contacts (namely load leading-out ends) and a movable component, the movable component comprises a movable spring part and a push rod component, the movable spring part is in bridge type fit between the two static contacts and is arranged at the top of the push rod component, two movable contacts of the movable spring part are respectively contacted with or separated from the two static contacts through the reciprocating motion of the push rod component, when in contact, current flows in from one static contact, and flows out from the other static contact after passing through the movable spring part. Along with the continuous extension of relay application field, also higher and higher to the performance requirement of relay, for high voltage direct current relay, need possess certain anti short circuit ability and anti-adhesion ability, however, this kind of direct action type high voltage direct current relay of prior art still has the shortcoming that anti short circuit ability is not enough and anti-adhesion ability is not enough.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides a direct-acting high-voltage direct-current relay which has better short circuit resistance and adhesion resistance through structural improvement and has the characteristics of simple structure, convenience in manufacturing and low manufacturing cost.

The technical scheme adopted by the invention for solving the technical problems is as follows: a direct-acting high-voltage direct-current relay comprises two fixed contacts, a movable spring part matched between the two fixed contacts in a bridge mode and a push rod assembly connected with the movable spring part to push the movable spring part to move back and forth; the movable spring part comprises a straight piece type rigid movable spring piece and two flexible movable spring pieces, the straight piece type rigid movable spring piece is connected with the push rod component to move along with the reciprocating motion of the push rod component, two ends of the straight piece type rigid movable spring piece respectively correspond to the lower parts of the two static contacts, the lower ends of the two flexible movable spring pieces are respectively fixed at two ends of the straight piece type rigid movable spring piece, the upper ends of the two flexible movable spring pieces are respectively obliquely crossed and extend to the lower parts of the other corresponding static contacts, the upper ends of the two flexible movable spring pieces are respectively provided with a movable contact to be correspondingly matched with the bottom ends of the two static contacts, so that an upward electromagnetic force is formed on each movable contact by utilizing a V-shaped structure formed by the two flexible movable spring pieces and the straight piece type rigid movable spring pieces respectively to resist a downward electric repulsive force formed on the movable contact due to short-circuit current when the movable contact is closed, meanwhile, the horizontal shearing force formed by the intersection of the two flexible movable reeds is utilized to promote the twisting of the matched movable and static contacts along the horizontal direction when the movable and static contacts are disconnected, so that the anti-adhesion capability is improved.

The movable contact is an independent part and is riveted and fixed at the upper end of the flexible movable reed; the upper part of the flexible movable spring leaf is provided with a first bending part which enables the upper end of the flexible movable spring leaf to be approximately horizontal.

The lower extreme of flexible movable reed is equipped with the second kink that is the U type, and the opening of the U type shape of second kink is towards the below.

And the side wall of one side of the outer side of the U-shaped shape of the second bending part of the flexible movable spring is fixed at the corresponding end of the straight piece type rigid movable spring in a roughly vertical mode.

The middle parts of the two flexible movable reeds are respectively provided with a yielding notch, and the yielding notches of the two flexible movable reeds are respectively in clearance opposite insertion so that the flexible movable reeds are in crossed distribution.

The angle between the upper parts of the two flexible movable reeds is more than 90 degrees.

The flexible movable spring plate is formed by stacking a plurality of leaf spring plates.

Compared with the prior art, the invention has the beneficial effects that:

1. the movable spring part is designed to comprise a straight piece type rigid movable spring piece and two flexible movable spring pieces, the straight piece type rigid movable spring piece is connected with the push rod assembly to move along with the reciprocating motion of the push rod assembly, two ends of the straight piece type rigid movable spring piece respectively correspond to the lower parts of the two static contacts, the lower ends of the two flexible movable spring pieces are respectively fixed at two ends of the straight piece type rigid movable spring piece, the upper ends of the two flexible movable spring pieces are respectively obliquely crossed and extend to the lower parts of the other corresponding static contacts, and the upper ends of the two flexible movable spring pieces are respectively provided with a movable contact to be correspondingly matched with the bottom ends of the two static contacts. The structure of the invention can utilize the V-shaped structure formed by the two flexible movable reeds and the straight piece type rigid movable reeds to form upward electromagnetic force on respective movable contacts to resist the downward electric repulsion force formed on the movable contacts due to short circuit current when the movable and fixed contacts are closed, and can utilize the horizontal shearing force formed by the intersection of the two flexible movable reeds to promote the rubbing of the matched movable and fixed contacts along the horizontal direction when the movable and fixed contacts are disconnected so as to improve the anti-blocking capability.

2. The invention adopts the structure that the lower end of the flexible movable spring is provided with the U-shaped second bending part, the U-shaped opening of the second bending part faces downwards, and the side wall of one side of the outer side of the U-shaped second bending part of the flexible movable spring is fixed at the corresponding end of the straight piece type rigid movable spring in a roughly vertical mode. According to the structure, after one side of the second bending part is fixed with the straight-piece type rigid movable spring piece, the other side of the second bending part is equivalent to a telescopic spring, so that the elasticity of the whole movable spring piece is increased, the elastic deformation is large, and the anti-adhesion capability is stronger.

3. According to the invention, the second bending part is arranged at the lower end, namely the root part, of the flexible movable spring, the distance from the movable contact to the bending part is lengthened, the flexibility of the spring is increased, when the contact generates electric repulsion force through carrying current, the compression amount of the spring is increased, the transverse shearing force is increased, the breaking of the contact is facilitated, and the anti-adhesion performance is better; and because the arm of force of the movable spring plate is lengthened, the stress of the movable spring plate is reduced, and the risk of fracture at the bending position can be avoided.

The invention is further explained in detail with the accompanying drawings and the embodiments; however, a direct-acting high-voltage direct-current relay according to the present invention is not limited to the embodiment.

Drawings

FIG. 1 is a top view of a partial configuration of an embodiment of the present invention;

FIG. 2 is a cross-sectional view of a partial configuration of an embodiment of the present invention;

FIG. 3 is a top view of a partial configuration (with the ceramic cover removed) of an embodiment of the present invention;

FIG. 4 is a cross-sectional view of a partial configuration (with the ceramic cover removed) of an embodiment of the present invention;

FIG. 5 is a force diagram of the moving contact (with current carried through the contact) in a partial configuration of an embodiment of the present invention;

FIG. 6 is an enlarged schematic view of the force condition at the location of the movable contact in FIG. 5;

FIG. 7 is a force diagram of the moving contact (with contact current open) in a partial configuration of an embodiment of the present invention;

FIG. 8 is an enlarged schematic view of the force condition at the location of the movable contact in FIG. 7;

FIG. 9 is a schematic view of the included angle of a flexible movable spring in a partial configuration according to an embodiment of the present invention;

fig. 10 is a schematic perspective view of the flexible movable spring piece and the movable contact in cooperation according to the embodiment of the present invention;

FIG. 11 is a schematic perspective view of a flexible leaf spring according to an embodiment of the present invention;

FIG. 12 is a front view of a flexible movable spring of an embodiment of the present invention;

FIG. 13 is a top view of a flexible movable spring of an embodiment of the present invention;

FIG. 14 is a bottom view of a flexible movable spring of an embodiment of the present invention;

FIG. 15 is a left side view of the flexible movable spring of the embodiment of the present invention;

figure 16 is a right side view of a flexible movable spring of an embodiment of the present invention.

Detailed Description