CN209880503U

CN209880503U - DC motor type outer guide pillar driven comprehensive arc extinguishing relay

Info

Publication number: CN209880503U
Application number: CN201920770601.9U
Authority: CN
Inventors: 陈平; 陈志忠; 唐为民
Original assignee: Ningbo Jin Chen Technology Co Ltd
Current assignee: Ningbo Jin Chen Technology Co Ltd
Priority date: 2019-05-27
Filing date: 2019-05-27
Publication date: 2019-12-31
Anticipated expiration: 2029-05-27

Abstract

The utility model discloses a DC motor type outer guide pillar driving comprehensive arc extinguishing relay, which comprises a shell, an arc extinguishing cover and a transmission assembly, wherein the arc extinguishing cover is provided with a cylindrical electrode, the cylindrical electrode is provided with a stationary contact, a flat electrode is arranged in the arc extinguishing cover, the flat electrode is provided with a movable contact, the arc extinguishing relay also comprises a slide bar, and the flat electrode is arranged on the slide bar; be equipped with outer guide pillar in the shell, the axis of outer guide pillar parallels with the slide bar axis, and the slide bar lateral wall has linked firmly the guide block, and the through hole has been seted up to the guide block, guide block and outer guide pillar sliding fit, and transmission assembly drive guide block is along outer guide pillar axial motion. The utility model has the advantages of it is following and effect: the outer guide post is adopted to guide the sliding rod, so that the moving precision and the stability are high, the movable contact and the fixed contact are precisely aligned, the friction resistance is small, the reliability is high, and the movement is faster; the thrust spring is adopted, so that pressure is generated when the static contact and the movable contact are abutted, and the contact is more stable; the torsion spring is adopted to drive the turning plate to reset, so that the application range is wider.

Description

DC motor type outer guide pillar driven comprehensive arc extinguishing relay

Technical Field

The utility model relates to a relay technical field, in particular to arc extinguishing relay is synthesized in outer guide pillar drive of direct current motor formula.

Background

The relay is a device with protection property for a circuit switch, which is an electric appliance for making a controlled quantity generate a predetermined step change in an electric output circuit when the change of an input quantity meets a specified requirement.

When the relay is used, the moving contact and the fixed contact of the relay generate electric arcs when being opened and closed, the electric arcs are gas discharge phenomena, and the electric currents pass through transient sparks generated by certain insulating media (such as air). The electric arc can cause the loss to the contact of relay, leads to the life of relay to shorten greatly, has increased use cost.

The prior Chinese patent with publication number CN108550505A discloses a high-power direct-current relay, which comprises a shell, a transmission assembly, a static spring and a movable spring, wherein the transmission assembly, the static spring and the movable spring are arranged in the shell, a static contact is arranged on the static spring, a movable contact is arranged on the movable spring, the output end of the transmission assembly is connected with the movable spring to push the movable contact on the movable spring to move towards the static contact on the static spring, the high-power direct-current relay also comprises a group of flexible arc-proof assemblies, the flexible arc-proof assemblies are arranged between the static contact and the movable contact, are in contact connection with the movable spring and move outwards towards the two ends of the movable spring under; when the movable contact and the fixed contact are separated, the flexible arc-proof component moves to a position between the movable contact and the fixed contact, so that arc extinction and arc isolation are realized; the transmission assembly comprises a speed reducing motor, a worm wheel, a gear and a rack, the output end of the speed reducing motor is connected with the worm, the worm is meshed with the worm wheel, the gear is connected with the worm wheel through a rotating shaft, the gear is meshed with the rack, and the rack is connected with the movable spring. In the transmission process of the transmission assembly, the speed reduction motor drives the worm to rotate, and the worm gear and the gear rack are used for transmission to enable the movable spring to move.

However, the high-power dc relay has the following disadvantages: because the rack drives when the movable spring moves, the rack is not guided by any guide assembly, and the offset is easy to occur in the moving process, so that the static contact and the movable contact cannot be accurately opposite, and the problem of lower motion precision and stability of the rack exists.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a direct current motor formula outer guide pillar drive synthesizes arc extinguishing relay adopts the mode of outer guide arm to lead when removing the slide bar that has the panel electrode, has the higher effect of motion accuracy and stationarity.

The above technical purpose of the present invention can be achieved by the following technical solutions: a direct current motor type outer guide pillar driving comprehensive arc extinguishing relay comprises a shell, an arc extinguishing cover and a transmission assembly, wherein the arc extinguishing cover and the transmission assembly are arranged in the shell, a cylindrical electrode is arranged on the arc extinguishing cover, a stationary contact is arranged on the cylindrical electrode, a flat plate electrode is arranged in the arc extinguishing cover, a movable contact point in contact fit with the stationary contact is arranged on the flat plate electrode, the direct current motor type outer guide pillar driving comprehensive arc extinguishing relay also comprises a sliding rod extending into the arc extinguishing cover, and the flat plate electrode is arranged on the sliding; the outer guide pillar is arranged in the shell, the axis of the outer guide pillar is parallel to the axis of the sliding rod, the sliding rod is fixedly connected with a guide block, a through hole for the outer guide pillar to penetrate through is formed in the guide block, the guide block is in sliding fit with the outer guide pillar through the through hole, and the transmission assembly drives the guide block to axially move along the outer guide pillar.

By adopting the technical scheme, when the movable contact is abutted against the fixed contact, the transmission assembly drives the guide block to move along the axial direction of the outer guide post, the guide block drives the slide rod to move along the axial direction, and the slide rod drives the flat electrode to move towards the cylindrical electrode until the movable contact is abutted against the fixed contact; when the movable contact is separated from the fixed contact, the transmission assembly drives the guide block to move reversely along the axis of the outer guide pillar, the guide block drives the slide rod to move axially, and the slide rod drives the flat electrode to move towards the direction far away from the cylindrical electrode, so that the movable contact is separated from the fixed contact. So, adopt outer guide pillar to lead slide bar axial motion, have the higher effect of slide bar motion accuracy and stationarity, can make movable contact and stationary contact accurate alignment, and frictional resistance is less, the reliability is higher in the motion process.

The utility model discloses a further set up to: the transmission assembly comprises a motor, a worm wheel, a gear and a rack, the worm is fixedly connected to an output shaft of the motor, the worm is meshed with the worm wheel, the worm wheel and the gear are coaxially arranged, the gear is meshed with the rack, and the rack is fixedly connected to the guide block along the extension direction of the axis of the sliding rod.

By adopting the technical scheme, when the transmission assembly drives the slide rod to move, the output shaft of the motor rotates to drive the worm to rotate, the worm wheel drives the gear to rotate under the transmission action of the worm wheel and the worm, and the gear is meshed with the rack, so that the gear drives the rack to transmit, and the rack drives the guide block to slide along the axis of the outer guide pillar.

The utility model discloses a further set up to: the flat electrode is movably sleeved on the sliding rod, the sliding rod is provided with a tray, a thrust spring is arranged between the tray and the flat electrode, and the thrust spring enables a moving contact of the flat electrode to have a movement trend of pressing the static contact; the end part of the sliding rod is provided with an elastic gasket matched with the flat electrode stop.

Through adopting above-mentioned technical scheme, when dull and stereotyped electrode and cylinder electrode contact, produce the cushion force under thrust spring's elastic action, produce certain pressure between stationary contact and the movable contact, make the contact of stationary contact and movable contact more stable, the reliability is higher, in addition, the elastic washer can play the backstop effect to dull and stereotyped electrode, prevents that dull and stereotyped electrode from breaking away from the slide bar.

The utility model discloses a further set up to: the side wall of the sliding rod is provided with a step, the tray is sleeved on the sliding rod, one end face of the tray is abutted against the step, and the other end face of the tray is abutted against the thrust spring.

Through adopting above-mentioned technical scheme, on the slide bar was located to the tray cover, when the slide bar moved to the cylinder electrode, can promote the tray motion through the step, the tray produced thrust to thrust spring, so more convenient when the assembly, and still can dismantle it.

The utility model discloses a further set up to: the turnover plate is arranged between the cylindrical electrode and the flat electrode, the turnover plate is rotatably connected in the arc extinguishing cover through a turnover plate shaft, a torsional spring is sleeved on the turnover plate shaft, and the torsional spring enables the turnover plate to always have a movement trend of separating the static contact from the movable contact.

By adopting the technical scheme, in the process that the flat electrode moves towards the cylindrical electrode, the flat electrode pushes the turning plate to turn over, and the turning plate extrudes the torsion spring and does not separate the static contact and the movable contact; when the flat electrode is driven by the sliding rod to move back and reset, the turning plate is turned over above the movable contact again under the elastic action of the torsion spring to separate the static contact from the movable contact.

The utility model discloses a further set up to: the mounting hole has been seted up to the arc-extinguishing chamber, and the cylinder electrode is installed in the mounting hole, and threaded connection has the nut on the cylinder electrode, and the cylinder electrode lateral wall is provided with the anticreep lug with nut backstop complex.

Through adopting above-mentioned technical scheme, when installing the cylinder electrode on the arc extinguishing cover, pass the mounting hole with cylinder electrode one end earlier, make anticreep lug and arc extinguishing cover offset, then install the nut on the cylinder electrode, can be with cylinder electrode fixed mounting in the mounting hole through the clamping action of nut and anticreep lug.

The utility model discloses a further set up to: the outer guide posts are arranged in two numbers, and the two outer guide posts are symmetrically arranged on two sides of the sliding rod.

By adopting the technical scheme, the two symmetrical outer guide pillars are arranged, so that the acting force exerted on the slide bar in the motion process is symmetrical, and the operation is faster and more stable.

To sum up, the utility model discloses following beneficial effect has:

1. the two symmetrical outer guide posts are adopted to guide the axial movement of the slide rod, so that the effect of higher movement precision and stability of the slide rod is achieved, the movable contact and the static contact can be accurately aligned, and the friction resistance is smaller, the reliability is higher and the movement is faster in the movement process;

2. the flat plate electrode is movably sleeved on the sliding rod and provided with the thrust spring, and under the elastic action of the thrust spring, certain pressure is generated between the fixed contact and the movable contact, so that the fixed contact and the movable contact are more stably contacted, and the reliability is higher;

3. the torsion spring is adopted to drive the turning plate to reset, so that the limitation of the placing state is avoided, and the application range is wider.

Drawings

Fig. 1 is a schematic diagram of the internal structural relationship of the embodiment in a front view state.

FIG. 2 is a schematic diagram of the internal structure of the embodiment in a side view.

Fig. 3 is a schematic structural relationship diagram of a partial structure of the embodiment in an exploded state.

In the figure: 1. a housing; 11. a communicating hole; 2. an arc extinguishing chamber; 21. an upper arc chute; 211. mounting holes; 22. a lower arc chute; 23. an interior chamber; 24. a cylindrical electrode; 241. a stationary contact; 242. an anti-drop bump; 243. a nut; 25 cavities; 3. a transmission assembly; 31. a motor; 32. a worm; 33. a turbine; 34. a gear; 35. a rack; 4. a plate electrode; 41. a movable contact; 5. a slide bar; 51. an elastic washer; 52. a step; 53. a tray; 54. a thrust spring; 6. an outer guide post; 7. a guide block; 71. a through hole; 8. turning over a plate; 81. a flap shaft; 9. a torsion spring.

Detailed Description

The present invention will be further described with reference to the accompanying drawings. For convenience of explanation, the following "up" and "down" are all in the same direction as shown in fig. 1.

A direct current motor type outer guide post driving comprehensive arc extinguishing relay is disclosed, as shown in figure 1, figure 2 and figure 3, and comprises a shell 1, wherein an arc extinguishing chamber 2 and a transmission component 3 are arranged in the shell 1, the arc extinguishing chamber 2 comprises an upper arc extinguishing chamber 21 and a lower arc extinguishing chamber 22, the upper arc extinguishing chamber 21 and the lower arc extinguishing chamber 22 are buckled together through a lip structure to form an inner cavity 23, two mounting holes 211 are formed in the upper arc extinguishing chamber 21, a cylindrical electrode 24 is arranged in the mounting holes 211, a stationary contact 241 is arranged at the lower end of the cylindrical electrode 24, namely the end part of the inner cavity 23, and a communicating hole 11 for extending out of the upper end of the cylindrical electrode 24 is formed in the shell 1; the side wall of the cylindrical electrode 24 at one end of the inner chamber 23 is provided with a retaining lug 242, and the side wall of the cylindrical electrode 24 outside the arc extinguishing chamber 2 is connected with a nut 243 by screw thread. When the cylindrical electrode 24 is installed on the arc-extinguishing chamber 2, one end of the cylindrical electrode 24 firstly passes through the installation hole 211, so that the anti-falling lug 242 abuts against the inner wall of the upper arc-extinguishing chamber 21, then the nut 243 is installed on the cylindrical electrode 24, and the cylindrical electrode 24 can be fixedly installed in the installation hole 211 through the clamping action of the nut 243 and the anti-falling lug 242. The inner chamber 23 is also provided with a plate electrode 4, and the upper end surface of the plate electrode 4 is provided with two movable contacts 41 which are in contact fit with the fixed contact 241.

As shown in fig. 1 and 2, a sliding rod 5 is further disposed in the housing 1, an upper end of the sliding rod 5 extends into the internal cavity 23 of the arc extinguishing chamber 2, the flat electrode 4 is sleeved on the upper end of the sliding rod 5, an elastic washer 51 matched with the flat electrode 4 in a stopping manner is disposed at an end of the sliding rod 5, and the elastic washer 51 can stop the flat electrode 4 to prevent the flat electrode 4 from separating from the sliding rod 5; the middle part of the lower arc-extinguishing cover 22 is recessed to form a cavity 25 communicated with the inner cavity 23, a step 52 is arranged on the side wall of the slide rod 5 located at the section of the cavity 25, a tray 53 and a thrust spring 54 are sleeved on the side wall of the slide rod 5 located in the cavity 25, one end of the thrust spring 54 abuts against the flat electrode 4, the other end of the thrust spring 54 abuts against the upper end face of the tray 53, the lower end face of the tray 53 abuts against the step 52, and the thrust spring 54 enables the movable contact 41 of the flat electrode 4 to have a movement tendency of pressing the stationary contact 241. The shell 1 is also internally provided with two outer guide posts 6 which are symmetrical relative to the slide rod 5, the axes of the outer guide posts 6 are parallel to the axes of the slide rod 5, the side wall of the slide rod 5 is fixedly connected with a guide block 7, the guide block 7 is provided with a through hole 71 for the outer guide post 6 to pass through, and the guide block 7 is in sliding fit with the outer guide post 6 through the through hole 71.

As shown in fig. 2, the transmission assembly 3 includes a motor 31, a worm 32, a worm wheel 33, a gear 34 and a rack 35, the worm 32 is fixedly connected to an output shaft of the motor 31, the worm 32 is engaged with the worm wheel 33, the worm wheel 33 is coaxially arranged with the gear 34, the gear 34 is engaged with the rack 35, and the rack 35 is fixedly connected to the guide block 7 along an axial extension direction of the slide rod 5.

In the transmission process, the output shaft of the motor 31 rotates to drive the worm 32 to rotate, the worm wheel 33 drives the gear 34 to rotate under the transmission action of the worm wheel 33 and the worm 32, and the gear 34 drives the rack 35 to transmit due to the fact that the gear 34 is meshed with the rack 35, so that the rack 35 drives the guide block 7 to slide along the axis of the outer guide pillar 6.

As shown in fig. 1, a turning plate 8 is arranged between the cylindrical electrode 24 and the flat electrode 4, the turning plate 8 is rotatably connected in the arc extinguishing chamber 2 through a turning plate shaft 81, a torsion spring 9 is sleeved on the turning plate shaft 81, one end of the torsion spring 9 is abutted on the turning plate 8, the other end of the torsion spring 9 is abutted on the inner wall of the lower arc extinguishing chamber 22, the torsion spring 9 enables the turning plate 8 to always have a movement tendency of separating the stationary contact 241 from the movable contact 41, and the turning plate 8 is horizontally turned and covered above the movable contact 41 in a normal state.

The utility model discloses a basic operating principle does: when the movable contact 41 is abutted against the fixed contact 241, the transmission assembly 3 drives the guide block 7 to move along the axial direction of the outer guide post 6, the guide block 7 drives the slide rod 5 to move along the axial direction, the slide rod 5 drives the flat electrode 4 to move towards the cylindrical electrode 24, the flat electrode 4 pushes the turning plate 8 to turn over in the process that the flat electrode 4 moves towards the cylindrical electrode 24, the turning plate 8 extrudes the torsion spring 9 to prevent the fixed contact 241 and the movable contact 41 from being separated until the movable contact 41 is abutted against the fixed contact 241, the step 52 generates thrust towards the tray 53 at the moment, the tray 53 generates thrust towards the thrust spring 54, and a certain pressure generated between the fixed contact 241 and the movable contact 41 is more stably contacted with each other, so that the reliability is higher; when the movable contact 41 is separated from the stationary contact 241, the transmission component 3 drives the guide block 7 to move reversely along the axis of the outer guide post 6, the guide block 7 drives the slide rod 5 to move axially, the slide rod 5 drives the plate electrode 4 to move in the direction away from the cylindrical electrode 24, and in the process, when the plate electrode 4 does not extrude the turning plate 8 any more, the turning plate 8 turns over above the movable contact 41 again under the elastic action of the torsion spring 9, so that the movable contact 41 is separated from the stationary contact 241. Therefore, the two symmetrical outer guide posts 6 are adopted to guide the axial movement of the slide rod 5, the effects of higher movement precision and stability and quicker operation of the slide rod 5 are achieved, the movable contact 41 and the static contact 241 can be accurately aligned, and the friction resistance and the reliability in the movement process are lower and higher.

Adopt torsional spring 9 to make in this embodiment to turn over board 8 and reset, compare in prior art and rely on turning over the mode that board 8 self gravity resets, prior art only is applicable to the vertical state of placing of relay, and the utility model discloses do not receive the restriction of putting the state, applicable scope is wider.

The above is only the preferred embodiment of the present invention, so all the equivalent changes or modifications made by the structure, features and principles in accordance with the claims of the present invention are included in the claims of the present invention.

Claims

1. The utility model provides an arc extinguishing relay is synthesized in outer guide pillar drive of direct current motor formula, includes shell (1), locates arc-extinguishing chamber (2), drive assembly (3) in shell (1), be provided with cylinder electrode (24) on arc-extinguishing chamber (2), cylinder electrode (24) are provided with stationary contact (241), be provided with dull and stereotyped electrode (4) in arc-extinguishing chamber (2), be equipped with on dull and stereotyped electrode (4) with stationary contact (241) contact complex movable contact (41), its characterized in that: the arc extinguishing chamber is characterized by further comprising a sliding rod (5) extending into the arc extinguishing chamber (2), wherein the flat plate electrode (4) is arranged on the sliding rod (5); the outer guide post (6) is arranged in the shell (1), the axis of the outer guide post (6) is parallel to the axis of the sliding rod (5), the sliding rod (5) is fixedly connected with a guide block (7), a through hole (71) for the outer guide post (6) to penetrate through is formed in the guide block (7), the guide block (7) is in sliding fit with the outer guide post (6) through the through hole (71), and the transmission assembly (3) drives the guide block (7) to axially move along the outer guide post (6).

2. The direct current motor type outer guide post driving comprehensive arc extinguishing relay as claimed in claim 1, wherein: the transmission assembly (3) comprises a motor (31), a worm (32), a worm wheel (33), a gear (34) and a rack (35), the worm wheel (32) is fixedly connected to an output shaft of the motor (31), the worm wheel (32) is meshed with the worm wheel (33), the worm wheel (33) and the gear (34) are coaxially arranged, the gear (34) is meshed with the rack (35), and the rack (35) is fixedly connected to the guide block (7) along the axial extension direction of the sliding rod (5).

3. The direct current motor type outer guide post driving comprehensive arc extinguishing relay as claimed in claim 1, wherein: the flat electrode (4) is movably sleeved on the sliding rod (5), the sliding rod (5) is provided with a tray (53), a thrust spring (54) is arranged between the tray (53) and the flat electrode (4), and the thrust spring (54) enables a movable contact (41) of the flat electrode (4) to have a movement trend of pressing the fixed contact (241); and an elastic washer (51) matched with the flat electrode (4) in a stop way is arranged at the end part of the sliding rod (5).

4. The direct current motor type outer guide post driving comprehensive arc extinguishing relay as claimed in claim 3, wherein: the side wall of the sliding rod (5) is provided with a step (52), the tray (53) is sleeved on the sliding rod (5), one end face of the tray (53) is abutted against the step (52), and the other end face of the tray (53) is abutted against the thrust spring (54).

5. The direct current motor type outer guide post driving comprehensive arc extinguishing relay as claimed in claim 1, wherein: a turning plate (8) is arranged between the cylindrical electrode (24) and the flat electrode (4), the turning plate (8) is rotatably connected into the arc extinguishing chamber (2) through a turning plate shaft (81), a torsion spring (9) is sleeved on the turning plate shaft (81), and the torsion spring (9) enables the turning plate (8) to have a partition all the time to keep off the movement trend of the fixed contact (241) and the movable contact (41).

6. The direct current motor type outer guide post driving comprehensive arc extinguishing relay as claimed in claim 1, wherein: mounting hole (211) have been seted up in arc-extinguishing chamber (2), cylindrical electrode (24) install in mounting hole (211), threaded connection has nut (243) on cylindrical electrode (24), cylindrical electrode (24) lateral wall be provided with nut (243) backstop complex anticreep lug (242).

7. The direct current motor type outer guide post driving comprehensive arc extinguishing relay as claimed in claim 1, wherein: the number of the outer guide posts (6) is two, and the two outer guide posts (6) are symmetrically arranged on two sides of the sliding rod (5).