WO2017201824A1

WO2017201824A1 - Motor-type high-voltage direct current relay

Info

Publication number: WO2017201824A1
Application number: PCT/CN2016/089177
Authority: WO
Inventors: 晏璐璐; 黄海燕
Original assignee: 浙江英洛华新能源科技有限公司
Priority date: 2016-05-27
Filing date: 2016-07-07
Publication date: 2017-11-30
Also published as: CN105869933A; CN105869933B

Abstract

A motor-type high-voltage direct current relay, comprising a housing, a movable contact assembly, a fixed contact assembly and a drive assembly being provided in the housing; the movable contact assembly comprises a movable spring (1), the movable spring (1) being fixed to the upper end of a push lever (5), a rack (23) being fixed to the lower end of the push lever (5); the drive assembly comprises an electric machine (6), an output shaft of the electric machine (6) moving synchronously with the rack (23) by means of a worm (20), the axis of the worm (20) and the axis of the push lever (5) being provided in parallel.

Description

Instruction manual Title: Motor type high voltage DC relay Technical field

[0001] The present invention relates to a high voltage direct current relay, and more particularly to a motor type high voltage direct current relay that supplies power to a dynamic or static contact contact or disconnection by a motor.

Background technique

[0002] The current relays are mostly electromagnetic relays, including coils, magnetic tubes, moving iron cores, push rods fixed in the moving iron core, moving springs fixed on the top of the push rod, and moving on the moving springs. Contact and static contact, etc., the working coil is energized to induce an electromagnetic induction effect, so that the moving iron core moves up and down in the magnetic conductive cylinder, so that the moving spring brings the movable contact into contact with the static contact, or the coil is powered off. The moving spring is returned to the original position by the force of the spring, thereby separating the moving contact from the stationary contact. In order to ensure the contact between the moving contact and the static contact, the coil needs to be energized all the time, and the relay is easily disturbed by the external magnetic field to cause the relay to malfunction, so that the moving and static contacts are unexpectedly separated. The contact between the moving contact of the electromagnetic relay and the static contact generates a repulsive force. If the thrust of the push rod is insufficient, the contact between the static and dynamic contacts is prone to occur, and in order to ensure that the movable contact can reliably contact the static contact, Increase the number of turns of the coil, increase the volume of the relay, and improve the production cost of the relay.

[0003] It is an object of the present invention to provide a motor type high voltage direct current relay which is more reliable in contact with moving and static contacts, can save power, and has low production cost.

Problem solution

Technical solution

[0004] In order to achieve the above object, the present invention adopts the following technical solutions: A motor type high voltage direct current relay includes a casing, and the casing is provided with a movable contact assembly, a static contact assembly and a driving assembly, The moving contact assembly comprises a moving spring piece, the moving spring piece is fixed to the upper end of the pushing rod, the lower end of the pushing rod is fixed with a rack, the driving component comprises a motor, and the output shaft of the motor is linked with the rack by a worm. The axis of the worm is arranged parallel to the axis of the push rod.

[0005] The present invention replaces the coil by a motor, replaces the magnetic circuit system by a drive component, and the worm wheel and the rack fit can The circumferential movement of the output shaft is converted into the axial movement of the push rod. The forward or reverse rotation of the motor causes the push rod to rise or fall, and the relay does not malfunction due to interference from the external magnetic field, ensuring reliable use of the relay of the present invention. The invention has the advantages of simple structure, low production process requirement and low production cost. The invention adopts the motor as the power of the push rod, and the stroke of the push rod and the movable spring is independent of the magnetic force, and the gap between the movable and static contacts can be increased to improve the use voltage of the relay of the invention and improve the performance of the relay of the invention. . The push rod is not horizontally affected by the magnetic force, and the movable contact on the moving spring can be reliably and accurately contacted with the static contact, and the horizontal deflection of the moving spring is prevented from coming into contact with other components to cause a malfunction. The motor of the invention cooperates with the rack fixed at the lower end of the push rod to axially move the push rod, and can ensure reliable contact between the movable contact and the static contact by the self-locking force of the motor itself, thereby ensuring reliable use of the relay of the invention. And because of the self-locking function of the driving assembly of the present invention, it is not necessary to provide a main spring or the like on the push rod. The worm can be directly fixed with the output shaft of the motor, or the worm structure can be arranged on the output shaft of the motor. The worm can be linked with the output shaft of the motor in various ways, such as a gear transmission. Wherein, the rack may be formed at the lower end of the push rod, and the part having the rack may be fixed at the lower end of the push rod. The rack may be formed on the part, and the rack may be fixed to the part by various means.

[0006] Preferably, the output shaft is disposed in parallel with the axis of the push rod, and the first gear is fixed on the output shaft, the first gear meshes with the second gear, and the second gear is coaxially fixed and interlocked with the worm.

[0007] Preferably, the lower end of the push rod is fixed with a transmission member, the transmission member includes a rack portion and a fixing portion on an upper side of the rack portion, and the rack is disposed on the rack portion, the fixing The portion has a rod-like structure and is fixed to the push rod, and the worm is always engaged with the rack of the transmission member.

[0008] The driving component of the invention has a self-locking function, and the output shaft of the motor is stopped to the maximum after stopping, and the push rod and the transmission component are not lowered, so that the position of the pushing rod after the motor is powered off can be ensured. After the contact between the static and dynamic contacts, the motor is always energized, and the power can be turned off after the contact of the static and dynamic contacts is completed, thereby saving power loss. Since the worm is mechanically rigidly connected to the transmission component, the contact or breaking of the movable contact and the static contact is more powerful, and the movable contact is in contact with the static contact, and the worm and the transmission component can support the push rod. There is no need to worry about poor contact between the dynamic and static contacts due to the Lorent magnetic force generated by the contact of the static and dynamic contacts, and the contact between the moving and stationary contacts is more reliable, so that the relay of the present invention responds more quickly. Different gear ratios of the first gear and the second gear may be set to function as a shifting gear; different gear ratios of the worm teeth and the rack may be provided to function as a shifting gear. The invention only passes the motor, the first gear, the second gear, the worm The rod and the transmission component realize the axial movement of the push rod, and the structure is simple and the precision is high, and the bad contact between the static and dynamic contacts does not occur.

[0009] Preferably, the inner side of the outer casing is fixed with a bottom plate, the motor is fixed on the upper side of the bottom plate, and the upper side of the bottom plate is provided with a first support frame, and the first support frame is provided by the first support plate and located at the first a plurality of first support columns on a lower side of the support plate, the bottom plate is provided with a first through hole through which the output shaft passes and a second through hole through which the worm passes, the first gear and the second gear are disposed under the bottom plate On the side, the upper end of the worm is matched with an upper bearing, the lower end of the worm is matched with a lower bearing, the upper bearing is fixed with the first support plate, and the lower bearing is fixed to the bottom plate. Wherein, the first support frame is used for supporting the worm, and is also used for limiting the transmission component to prevent the rack of the transmission component from coming off the helical teeth of the worm. The bottom plate can be fixed relative to the outer casing in a plurality of ways, such as forming an upward projection in the bottom of the outer casing to support the bottom plate, and the bottom plate and the outer casing being screwed.

[0010] Preferably, the opposite sides of the rack portion are provided with a guiding groove penetrating the rack portion, and the guiding groove is matched with a guiding column, and the axis of the guiding column is parallel to the axis of the pushing rod The upper end of the guide post is fixed to the first support plate of the first support frame, the lower end of the guide post is fixed to the bottom plate, and the first support plate is formed with a fixing portion for the push rod or the transmission member. Fifth through hole. The guiding groove and the guiding column are arranged to guide the movement of the transmission member, ensuring the axial movement of the pushing rod, so that the moving contact can reliably and accurately contact the stationary contact.

[0011] Preferably, the top of the fixing portion is formed with a pin head, and the lower end of the pushing rod is formed with a receiving groove for accommodating the pin head, and the pin head of the transmission component is located in the receiving groove of the pushing rod and passes through The positioning pin is fixed with the push rod. The above arrangement secures the transmission member to the push rod.

[0012] Preferably, the bottom plate is provided with a second support frame, and the first support frame is located inside the second support frame

The second support frame is composed of a second support plate and a plurality of second support columns. The movable spring piece is located on the upper side of the second support frame, and the second support plate is formed with a third through hole for the push rod to pass through. A damping plate is fixed on a side of the second supporting plate, and the damping piece is formed with a fourth through hole through which the pushing rod passes, and the moving spring is moved downward to be in contact with the damping piece. The damping plate is set to cushion the downward movement of the moving spring and protect the moving spring. Wherein, the damping piece is made of a material having a certain elasticity, and the second positioning frame is used to replace the yoke plate of the conventional relay.

[0013] Preferably, the first support plate of the first support frame is formed with a sixth through hole, and the upper bearing is matched with In the sixth through hole, the lower bearing is fitted in the second through hole of the bottom plate. The bearing housing is not required to be fixed, making the structure of the present invention simpler.

[0014] Preferably, the worm includes at least a first segment, a second segment, a third segment, a fourth segment and a fifth segment from above, wherein an inner ring of the upper bearing is fixed to the first segment, The third segment is formed with a helical tooth that cooperates with the rack, the inner ring of the lower bearing is fixed to the fifth segment, the diameter of the second segment is larger than the diameter of the first segment, and the fourth segment The diameter is larger than the diameter of the fifth section, the aperture of the sixth through hole is adapted to the diameter of the first section, and the aperture of the second through hole is adapted to the diameter of the fifth section. The above arrangement prevents the worm from being detached from the second through hole of the bottom plate, facilitating the assembly of the present invention. Wherein, the diameter of the second segment and the fourth segment should be smaller than the diameter of the helical teeth on the third segment.

[0015] Preferably, the upper side of the second support frame is provided with a positioning frame, and the magnetic steel is fixed on the positioning frame, and the positioning frame is formed with an annular positioning protrusion extending downward, the annular positioning protrusion Cooperating with the third through hole and being fixed in the third through hole, the pushing rod is located in the annular positioning protrusion, and the damping piece is fixed to the positioning frame. Wherein, the positioning frame is used for fixing the magnetic steel, and the damping piece is fixed on the upper side of the positioning frame

Advantageous effects of the invention

Beneficial effect

[0016] The invention has the advantages of avoiding the erroneous operation of the relay of the invention caused by the external magnetic field, the more reliable and precise contact of the dynamic and static contact of the relay of the invention, the reliability of the relay of the invention is higher, and the production cost is lower. The invention has the advantages that the gap between the moving and static contacts can be increased to improve the use voltage of the relay of the invention and improve the performance of the relay of the invention. The driving component of the invention has a self-locking function, which can ensure the position of the push rod after the power is cut off, does not need to be energized after the contact of the dynamic and static contacts, can complete the power-off of the motor after the contact of the dynamic and static contacts is completed, thereby saving power loss, and The movable contact is in contact with the static contact. The worm and the transmission member support the moving reed and the push rod without worrying about the Lorent magnetic force generated by the contact between the static and dynamic contacts, so that the contact between the moving and static contacts is more reliable and resistant. Short circuit capability is stronger.

Brief description of the drawing

DRAWINGS

[0006] FIG. 1 is a schematic cross-sectional view of the present invention;

2 is a schematic structural view of a driving assembly of the present invention; 3 is a schematic structural view of a worm according to the present invention;

4 is a schematic structural view of a transmission component of the present invention;

[0021] FIG. 5 is a schematic structural view of a first support frame of the present invention;

[0022] FIG. 6 is a schematic structural view of a bottom plate of the present invention;

7 is a schematic structural view of a motor of the present invention;

8 is a schematic structural view of a shock absorbing sheet of the present invention;

9 is a schematic structural view of a positioning frame of the present invention;

10 is a schematic structural view of a magnetic steel of the present invention mated with a positioning frame;

11 is a schematic structural view of a second support frame of the present invention.

BEST MODE FOR CARRYING OUT THE INVENTION

[0007] As shown in FIG. 1, a motor type high voltage direct current relay of the present invention includes an upper half of a relay and a lower half of a relay, and a movable contact assembly and a static contact assembly are disposed in an upper half of the relay. The movable contact assembly comprises a moving reed 1 and a movable contact 2 disposed at the left and right ends of the movable reed 1, the static contact assembly comprising a stationary contact 3 and a lead end 4, and the movable reed 1 and the upper end of the push rod 5 Fixed, the lower end of the push rod 5 is located in the lower half of the relay, and the lower half of the relay is provided with a drive assembly, the drive assembly includes a motor 6, and the motor is a small DC brush motor. A rack 23 is fixed to the lower end of the push rod, and an output shaft of the motor 6 is coupled to the rack 23 via the worm 20, and a transmission member 21 is fixed to the lower end of the push rod 5. The transmission member 21 is formed with a screw tooth 22 adapted to the worm 20. Rack 23. The axis of the output shaft of the motor 6, the axis of the worm 20, and the axis of the push rod 5 are arranged parallel to each other, and the helical teeth 22 of the worm 20 cooperate with the rack 23 to convert the circumferential movement of the output shaft into the axial movement of the push rod, the motor The rotation of the output shaft of 6 can move the push rod 5 in the axial direction, so that the movable contact 2 fixed on the moving spring 1 is in contact with or disconnected from the static contact 3. The upper part of the relay is matched with the upper casing 7, and the lower half of the relay Partially matched with the lower casing 8.

[0029] The stationary contact 3 is fixed on the lower side of the lead-out end 4, and the lead-out end 4 is fixed to the insulating plate 9 made of ceramic material, and the second support frame 10 and the bottom plate 11 are disposed in the lower outer casing 8, and the second support frame 10 is provided. It is fixed to the bottom plate 11, and the lower casing is provided with a support structure for the bottom plate 11, and the bottom plate 11 is fixed to the lower casing 8. The second support frame 10 is composed of a second support plate and two second support columns disposed on the lower side of the second support plate. The upper side of the second support frame 10 is provided with a yoke magnetic magnetic clip 12 having a surrounding structure, and is insulated. The plate 9, the yoke magnetic clip 12 and the second support plate are fixed by the fastener 13 A chamber is formed and received to house the stationary contact assembly and the movable contact assembly.

[0030] As shown in FIG. 1, FIG. 9, and FIG. 10, a positioning frame 14 is fixed on the second supporting plate of the second supporting frame 10. Two magnetic steels 15 are disposed on opposite sides of the positioning frame 14, and the positioning frame 14 is disposed. And the magnetic steel 15 is located in the chamber. The lead end 4 includes an upper portion and a lower portion. The insulating plate 9 is formed with a leading end passage hole through which the lower end portion of the leading end passes. The diameter of the upper end portion of the leading end is larger than the diameter of the lower portion of the leading end, and the lower portion of the leading end is fitted with a magnetic conductive sleeve 16 having a nut structure. The lower end of the leading end is formed with a threaded structure that cooperates with the magnetically permeable sleeve 16, and the magnetically permeable sleeve 16 is threadedly engaged with the leading end 4 and the insulating plate 9 is clamped between the upper portion of the leading end 4 and the magnetically permeable sleeve 16.

[0031] As shown in FIG. 1 and FIG. 2, the insulating plate 9 extends downwardly with an arc blocking member 17, and a central portion of the movable spring plate 1 is formed with a retaining groove 18, and the movable and static contact contacts the lower end of the arc blocking member 17. The arcing member 17 has a height that can block the opposing arc between the two sets of dynamic and static contacts, and the dimension of the arc blocking member 17 in the front-rear direction is greater than the front and rear of the joint surface of the movable contact 2 and the stationary contact 3. width.

1, 2, 3, and 4, the worm 20 is parallel to the axis of the push rod 5, and the output shaft 5 of the motor 6 is parallel to the axis of the push rod. The upper end of the transmission member 21 is fixed to the push rod 5, and the lower end of the transmission member 21 is formed with the rack 23 toward the side of the worm 20. The helical teeth 22 of the worm 20 are always engaged with the rack 23, and the worm 20 is rotated to make the transmission member 21 move up and down. The motor 6 is fixed on the upper side of the bottom plate 11, and the first gear 24 is fixed to the output shaft of the motor 6, the first gear 24 meshes with the second gear 25, and the second gear 25 is fixed and interlocked with the worm 20.

[0033] As shown in FIG. 1, FIG. 2, FIG. 5, and FIG. 7, a first support frame 19 is disposed on the upper side of the bottom plate 11, and the first support frame 19 is located inside the second support frame 10, and the first support frame 19 is A support plate and four first support columns on the lower side of the first support plate are formed. The bottom portion 11 is provided with a first through hole 30 through which the output shaft of the power supply machine 6 passes and a second through hole 31 through which the worm 20 passes, and the first gear 24 and the second gear 25 are disposed on the lower side of the bottom plate 11. The upper end of the worm 20 is fitted with an upper bearing, the lower end of the worm 20 is fitted with a lower bearing, the upper bearing is fixed to the first support plate, and the lower bearing is located in the second through hole 31 of the bottom plate 11. The end of the motor 6 provided with the output shaft is formed with a boss 49, and the boss 49 is fixed in the first through hole 30. The first support plate of the first support frame 19 is formed with a sixth through hole 37, the upper bearing is fitted in the sixth through hole 37, and the lower bearing is fitted in the second through hole 31 of the bottom plate 11.

1, 2, and 4, the transmission member 21 includes a rack portion 26 formed with a rack 23, and the upper portion of the rack portion 26 is formed with a fixing portion 27, and the fixing portion 27 has a rod-like structure. And being fixed to the push rod 5, the rack portion 26 is provided with a guide groove 32 extending longitudinally through the rack portion with respect to both sides of the fixed portion 27, and each guide groove 32 The inner portion is provided with a guide post 33, and the axis of the guide post 33 is disposed in parallel with the axis of the push rod 5. The upper end of the guide post 33 is fixed to the first support plate of the first support frame 19, and the lower end of the guide post 33 is fixed to the bottom plate 11, and the first support plate is formed with a fifth through hole through which the fixing portion 27 of the transmission member 21 passes. 34.

[0035] The top of the fixing portion 27 is formed with a flat pin head 28, and the lower end of the push rod 5 is formed with a receiving groove for accommodating the pin head 28. The pin head 28 of the transmission member 21 is located in the receiving groove of the push rod 5 and is positioned by The pin 29 is fixed to the push rod 5.

[0036] As shown in FIG. 1 and FIG. 11, the moving spring piece 1 is located above the second supporting frame 10, and the second supporting plate is formed with a third through hole 35 through which the push rod 5 passes, and the second supporting plate side is fixed. There is a damping piece 36, and the damping piece 36 is formed with a fourth through hole through which the push rod 5 passes.

[0037] As shown in FIG. 2, FIG. 3, FIG. 5, and FIG. 6, the worm 20 includes a first segment 41, a second segment 42, a third segment 43, a fourth segment 44, and a fifth segment 45 in order from top to bottom. The inner ring of the upper bearing is fixed to the first segment 41, the helical tooth 22 is disposed on the third segment 43, and the inner ring of the lower bearing is fixed to the fifth segment 45. The diameter of the second section 42 is larger than the diameter of the first section 41, the diameter of the fourth section 44 is larger than the diameter of the fifth section 45, the aperture of the sixth through hole 37 is adapted to the diameter of the first section 41, and the second through hole 31 The aperture is adapted to the diameter of the fifth section 45.

As shown in FIGS. 1 and 8, the damper 36 is a hat-shaped structure, and the damper 36 includes a visor portion 38 and a damper portion 39 on the upper side of the visor portion 38. The inner convex inner ring and the inner wall of the inner convex ring have a curved surface structure.

[0039] As shown in FIG. 1, FIG. 9, and FIG. 10, the opposite sides of the positioning frame 14 are formed with magnetic steel grooves 46 on which the magnetic steel 15 is placed, and the movable springs 1 are formed between the two magnetic steel grooves 46. The position of the moving reed 1 moving downward can be located between the two magnetic steel grooves 46. The positioning frame 14 is formed with a downwardly extending annular positioning protrusion 47. The annular positioning protrusion 47 is matched with the third through hole 35 and fixed in the third through hole 35, and the pushing rod 5 passes through the annular positioning protrusion 47, the damping piece. The brim portion 38 of the 36 is fixed to the positioning frame 14.

[0040] As shown in FIG. 1, the upper casing 7 is formed with an outwardly convex outer convex body 48. The outer casing 7 has an outer diameter at a lower portion of the outer convex portion 48 which is smaller than an inner diameter of a lower outer casing 8 casing wall. The lower end of the 7 is located in the upper casing 8 and the outer convex body 48 is opposed to the upper edge of the lower outer casing 8. The fasteners 13 are bolts, and the second support plates of the second support frame 10 are rectangular, and the first fixing holes are provided at the four corners of the insulating plate 9. The second support frame 10 is provided at four corners. The second fixing hole 40 corresponding to the first fixing hole passes through the first fixing hole and is screwed to the second fixing hole 40, and the bolt head of the fastener 13 abuts against the upper edge of the insulating plate 9. [0041] The motor shaft of the motor of the present invention rotates, so that the first gear 24 fixed on the motor shaft drives the second gear 25 to rotate to rotate the worm 20 fixed coaxially with the second gear 25 to cooperate with the worm 20. The transmission member 21 is raised or lowered to raise or lower the push rod and the moving spring to contact or break the moving and static contacts. Wherein, when the transmission member 21 is lowered, the moving spring 1 is lowered and abuts against the top end of the damping piece 36; when the transmission member 21 is raised to bring the movable contact 2 into contact with the stationary contact 3, the motor of the relay of the present invention can be Power off to save energy.

[0042] The invention has the advantages of avoiding the erroneous operation of the relay of the invention caused by the external magnetic field, the more reliable and precise contact of the dynamic and static contacts of the relay of the invention, the reliability of the relay of the invention being higher, and the production cost is lower. The advantage is that the gap between the moving and static contacts can be increased to improve the use voltage of the relay of the invention and improve the performance of the relay of the invention. The driving component of the invention has a self-locking function, which can ensure the position of the pushing rod after the motor is powered off, does not need to be energized after the contact of the moving and static contacts, can be powered off after the contact of the moving and static contacts, saves power loss, and moves The contact is in contact with the static contact. The worm and the transmission component support the moving spring. There is no need to worry about the Lorent magnetic force generated by the contact between the static and dynamic contacts, so that the contact between the static and dynamic contacts is more reliable and the short circuit resistance is strong.

[0043]

Claims

Claim

[Claim 1] A motor type high voltage direct current relay, comprising: a housing having a movable contact assembly, a static contact assembly, and a drive assembly, wherein the movable contact assembly includes a movable spring, The moving reed is fixed to the upper end of the push rod, the lower end of the push rod is fixed with a rack, the driving assembly comprises a motor, and the output shaft of the motor is linked with the rack by a worm, the axis of the worm and the push rod The axes are arranged in parallel.

[Claim 2] The motor type high voltage direct current relay according to claim 1, wherein the output shaft is disposed in parallel with an axis of the push rod, and the first gear is fixed on the output shaft, the first gear and the second The gear meshes, and the second gear is coaxially fixed and linked with the worm.

[Claim 3] The motor type high voltage direct current relay according to claim 1 or 2, wherein a lower end of the push rod is fixed with a transmission member, and the transmission member includes a rack portion and an upper side of the rack portion The fixing portion is disposed on the rack portion, and the fixing portion has a rod-like structure and is fixed to the push rod, and the worm is always engaged with the rack of the transmission member.

[Claim 4] The motor-type high-voltage direct current relay according to claim 3, wherein a bottom plate is fixed on an inner side of the outer casing, the motor is fixed on an upper side of the bottom plate, and a first support frame is disposed on an upper side of the bottom plate. The first support frame is composed of a first support plate and a plurality of first support columns on a lower side of the first support plate, the bottom plate is provided with a first through hole for the output shaft to pass through and a second pass for the worm to pass through a hole, the first gear and the second gear are disposed on a lower side of the bottom plate, the upper end of the worm is matched with an upper bearing, the lower end of the worm is matched with a lower bearing, and the upper bearing is fixed with the first support plate The bearing is fixed to the bottom plate.

[Claim 5] The motor type high voltage direct current relay according to claim 4, wherein the opposite sides of the rack portion are provided with guide grooves penetrating the rack portion, and the guide grooves are matched with a guiding column, the axis of the guiding column is parallel to the axis of the pushing rod, the upper end of the guiding column is fixed to the first supporting plate of the first supporting frame, and the lower end of the guiding column is fixed to the bottom plate

The first support plate is formed with a fifth through hole through which the fixing portion of the push rod or the transmission member passes.

[Claim 6] The motor type high voltage direct current relay according to claim 3, wherein a top of the fixing portion is formed with a pin head, and a lower end of the push rod is formed to accommodate the pin head The slot, the pin head of the transmission component is located in the receiving groove of the push rod and is fixed to the push rod by the positioning pin.

The motor-type high-voltage DC relay according to claim 4, wherein the bottom plate is provided with a second support frame, the first support frame is located inside the second support frame, and the second support frame is supported by the second support The plate and the plurality of second support columns are formed, the movable spring is located on the upper side of the second support frame, the second support plate is formed with a third through hole through which the push rod passes, and the second support plate side is fixed The shock absorbing sheet is formed with a fourth through hole through which the push rod passes, and the moving spring is moved downward to be in contact with the shock absorbing sheet.

The motor type high voltage direct current relay according to claim 4, wherein the first support plate of the first support frame is formed with a sixth through hole, and the upper bearing is fitted in the sixth through hole, the lower bearing Fitted in the second through hole of the bottom plate.

A motor type high voltage direct current relay according to claim 4, wherein said worm includes at least a first segment, a second segment, a third segment, a fourth segment and a fifth segment from above, said inner bearing The ring is fixed to the first segment, the third segment is formed with a helical tooth that cooperates with the rack, the inner ring of the lower bearing is fixed with the fifth segment, and the diameter of the second segment is larger than the first segment a diameter of the segment, a diameter of the fourth segment is larger than a diameter of the fifth segment, an aperture of the sixth through hole is adapted to a diameter of the first segment, and an aperture of the second through hole is The diameter of the fifth segment is adapted.

The motor-type high-voltage DC relay according to claim 7, wherein a positioning frame is disposed on an upper side of the second support frame, and a magnetic steel is fixed on the positioning frame, and the positioning frame is formed with a downwardly extending ring. a positioning protrusion, the annular positioning protrusion is matched with the third through hole and fixed in the third through hole, the pushing rod is located in the annular positioning protrusion, and the damping piece is fixed to the positioning frame .