CN116564760A - Piezoelectric ceramic relay - Google Patents
Piezoelectric ceramic relay Download PDFInfo
- Publication number
- CN116564760A CN116564760A CN202310510653.3A CN202310510653A CN116564760A CN 116564760 A CN116564760 A CN 116564760A CN 202310510653 A CN202310510653 A CN 202310510653A CN 116564760 A CN116564760 A CN 116564760A
- Authority
- CN
- China
- Prior art keywords
- piezoelectric ceramic
- plate
- piezoceramics
- board
- fixed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000919 ceramic Substances 0.000 title claims abstract description 100
- 230000000694 effects Effects 0.000 claims abstract description 20
- 230000001681 protective effect Effects 0.000 claims abstract description 8
- 239000002184 metal Substances 0.000 claims description 46
- 230000000670 limiting effect Effects 0.000 claims description 17
- 238000004140 cleaning Methods 0.000 claims description 14
- 230000005684 electric field Effects 0.000 abstract description 52
- 230000000712 assembly Effects 0.000 abstract description 26
- 238000000429 assembly Methods 0.000 abstract description 26
- 238000000034 method Methods 0.000 abstract description 15
- 230000008569 process Effects 0.000 abstract description 13
- 230000009471 action Effects 0.000 abstract description 11
- 230000006835 compression Effects 0.000 abstract description 8
- 238000007906 compression Methods 0.000 abstract description 8
- 230000009467 reduction Effects 0.000 abstract description 4
- 230000002441 reversible effect Effects 0.000 abstract description 4
- 239000000463 material Substances 0.000 abstract description 3
- 238000000926 separation method Methods 0.000 abstract description 3
- 230000003647 oxidation Effects 0.000 description 6
- 238000007254 oxidation reaction Methods 0.000 description 6
- 230000002829 reductive effect Effects 0.000 description 6
- 238000012423 maintenance Methods 0.000 description 4
- 230000036961 partial effect Effects 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 230000035945 sensitivity Effects 0.000 description 3
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002146 bilateral effect Effects 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/02—Bases; Casings; Covers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/02—Bases; Casings; Covers
- H01H50/04—Mounting complete relay or separate parts of relay on a base or inside a case
- H01H50/041—Details concerning assembly of relays
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/54—Contact arrangements
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)
Abstract
The invention belongs to the technical field of relays, and discloses a piezoelectric ceramic relay which comprises a bottom plate, wherein a protective shell is movably arranged at the top end of the bottom plate, a first piezoelectric ceramic plate positioned in the protective shell is fixedly arranged in the middle of the top end of the bottom plate, and a second piezoelectric ceramic plate positioned in the protective shell is fixedly arranged in the middle of the top end of the first piezoelectric ceramic plate. According to the invention, by utilizing the piezoelectric effect, the stretching of the first piezoelectric ceramic plate and the compression of the second piezoelectric ceramic plate are realized through inputting the forward electric field and the reverse electric field, the relative approaching of the two fixing plates is realized through the stretching action of the first piezoelectric ceramic plate and the compression action of the second piezoelectric ceramic plate, and then the relative approaching of the two contact assemblies is realized, the acting force of the materials is uniform in the whole deformation process, the problem of precision reduction caused by the excessive stress of the stressed position of the traditional device is avoided, the contact and separation between the contacts are not influenced, and the service life is longer.
Description
Technical Field
The invention belongs to the technical field of relays, and particularly relates to a piezoelectric ceramic relay.
Background
The relay is an electric control device, and when a change in an input amount (excitation amount) reaches a predetermined requirement, a controlled amount is changed in a predetermined step in an electric output circuit. It has an interactive relationship between the control system (also called input loop) and the controlled system (also called output loop). The relay is mainly used for switching the circuit, the traditional relay mainly utilizes the magnetic force generated by electrifying an electromagnet to realize the movement of an armature so as to realize the purpose of switching the circuit, the internal structure of the relay is complex, the maintenance cost is high, and the piezoelectric ceramic relay which is manufactured by taking piezoelectric ceramic as a main component appears in the prior art.
The piezoelectric ceramic is an information functional ceramic material capable of mutually converting mechanical energy and electric energy, a certain electric field is generally given to the piezoelectric ceramic in the application process of the relay, at the moment, certain mechanical stress is generated in the piezoelectric ceramic under the action of the electric field to drive the piezoelectric ceramic to deform so as to realize contact of the contacts, but the piezoelectric ceramic relay used at present is generally a piezoelectric ceramic inside, the deformation of the piezoelectric ceramic at a specific position is controlled through limiting the deformation position of the piezoelectric ceramic so as to realize on-off of a circuit, and the device can lead the stress position of the piezoelectric ceramic to excessively deform, so that the deformation amount of the piezoelectric ceramic is insufficient to realize contact of the contacts for a long time, and the service life is lower.
In the actual use process of the relay made of the piezoelectric ceramic, the deformation effect of the piezoelectric ceramic can drive the contacts to contact with each other to realize the switching of the circuit, but the deformation amount generated by the piezoelectric ceramic is positively related to the intensity of an electric field received by the piezoelectric ceramic, namely, in a certain range, the deformation amount generated by the piezoelectric ceramic is correspondingly increased as the intensity of the electric field received by the piezoelectric ceramic is higher, when the deformation amount is gradually increased, the two contacts still have a relatively close trend, and the pressure between the two contacts is increased, so that the contacts bear higher pressure, the contact is damaged, and the improvement is needed.
Disclosure of Invention
The present invention is directed to a piezoelectric ceramic relay, which solves the problems set forth in the background art.
In order to achieve the above object, the present invention provides the following technical solutions: the utility model provides a piezoceramics relay, includes the bottom plate, the top movable mounting of bottom plate has the protecting crust, the middle part fixed mounting on bottom plate top has the first piezoceramics board that is located the protecting crust inside, the middle part fixed mounting on first piezoceramics board top has the second piezoceramics board that is located the protecting crust inside, the second piezoceramics board is located the top of first piezoceramics board and mutually perpendicular between first piezoceramics board and the second piezoceramics board, the middle part of first piezoceramics board top is equipped with the fixed plate, the middle part of second piezoceramics board top also is equipped with the fixed plate, the quantity of fixed plate is two, sets up the fixed plate in first piezoceramics board top is located the top that sets up in second piezoceramics board top fixed plate, two contact assembly is all inlayed in the middle part of fixed plate top, two contact assembly bilateral symmetry sets up, the equal fixed mounting in front and back both sides on the fixed plate top at first piezoceramics board top has first pin, the equal fixed mounting in left and right sides of first piezoceramics board bottom has first pin, the bottom of the equal fixed mounting of second pin and the bottom of second ceramic board both sides runs through.
Before practical use, the two first pins and the second pins are connected with an external electric field, wherein the two first pins are externally connected with a positive electric field, the two second pins are externally connected with a negative electric field, and meanwhile, the connecting wires of the two contact assemblies can be connected with the external circuit to finish the preparation before use.
As a further technical scheme of the invention, fixed guide rails are fixedly arranged on the left side and the right side of the top end of the first piezoelectric ceramic plate and the front side and the rear side of the top end of the second piezoelectric ceramic plate, clamping blocks are movably clamped in the middle of the top end of the fixed guide rails, and locking bolts are arranged at the bottom ends of the clamping blocks.
As a further technical scheme of the invention, the bottom end of the locking bolt penetrates through the bottom end of the first piezoelectric ceramic plate or the second piezoelectric ceramic plate, the clamping block is fixed with the first piezoelectric ceramic plate or the second piezoelectric ceramic plate through the locking bolt, the top ends of the clamping blocks are fixedly provided with first fixing seats, and one ends, far away from the clamping blocks, of the first fixing seats are movably connected with connecting rods through rotating shafts.
As a further technical scheme of the invention, one end of the connecting rod, which is far away from the first fixing seat, is movably connected with the second fixing seat through the rotating shaft, the top end of the second fixing seat is connected with the bottom end of the fixing plate, and the two second fixing seats are positioned on two sides of the bottom end of the fixing plate.
When the circuit is switched on and off, a positive electric field can be applied to the first piezoelectric ceramic plate through the first pin, a negative electric field can be applied to the second piezoelectric ceramic plate through the second pin, at the moment, the first piezoelectric ceramic plate can be stretched under the action of the positive electric field, at the moment, the upper two fixed guide rails are relatively far away, the upper two connecting rods deflect along with the upper fixed guide rails, the included angle between the two connecting rods is increased along with the upper fixed guide rails, at the moment, the fixed plate above the two connecting rods descends along with the fixed plate, the middle contact assembly is driven to descend along with the lower fixed guide rails, the second piezoelectric ceramic plate can be compressed under the action of the negative electric field, at the moment, the two connecting rods deflect along with the upper fixed plate, the included angle between the two connecting rods is reduced along with the upper fixed plate, at the moment, the upper fixed plate and the lower fixed plate are relatively close along with the fixed plate, and drive the two contact assemblies to approach along with the fixed guide rails, until the two contact assemblies are in contact with each other, and the circuit is completed, and conversely, the electric field is released, the two contact assemblies are relatively far away from each other, and the circuit is completed.
Through being provided with the first piezoceramics board and the second piezoceramics board that two mutually perpendicular set up to utilize the piezoelectric effect, realize the tensile of first piezoceramics board and the compression of second piezoceramics board through input forward electric field and reverse electric field, realize being close to relatively of two fixed plates through the tensile effect of first piezoceramics board and the compression effect of second piezoceramics board, and then realize being close to relatively of two contact assemblies, the effort that whole deformation in-process material received is even, avoids traditional device atress position excessive stress and then the problem that the precision that causes descends, can not influence contact and separation between the contact, life is higher.
As a further technical scheme of the invention, the contact assembly comprises a storage sleeve, the storage sleeve is embedded and installed with the middle part of the fixed plate, a conductive rod is movably sleeved in the storage sleeve, the conductive rod can move up and down relative to the storage sleeve, and a metal contact is fixedly installed at the bottom end of the conductive rod.
As a further technical scheme of the invention, the bottom end of the storage sleeve is fixedly provided with the rubber sleeve, the inner diameters of the rubber sleeve and the storage sleeve are the same, the inner diameter of the rubber sleeve is the same as the diameter of the metal contact, and the top end of the conducting rod penetrates through the top end of the storage sleeve and is fixedly provided with the electrode plate.
As a further technical scheme of the invention, the outer side surface of the conducting rod is movably sleeved with a reset spring, and the upper end and the lower end of the reset spring are respectively connected with the top end of the inner cavity of the storage sleeve and the top end of the bottom end of the metal contact.
When an electric field acts on the device, the two contact assemblies are relatively close, the distance between the two metal contacts is shortened, when a preset threshold value is exceeded, the two metal contacts are just contacted, the circuit is switched on, when the electric field is continuously applied and the electric field strength is increased, the two metal contacts can be contacted with each other and apply opposite acting force to each other, the upper reset spring and the lower reset spring are compressed, the metal contacts located above are upwards displaced, the metal contacts located below are downwards displaced until the metal contacts mostly enter the inside of the storage sleeve, the reset spring can absorb impact force when the metal contacts shrink inwards, and when the electric field is applied, the reset spring can automatically reset to realize automatic reset of the metal contacts.
Through two mutually perpendicular's first piezoceramics board and second piezoceramics board, utilize its piezoelectricity effect to realize two contact assembly's relatively and be close to the contact with metal contact setting to movable contact, relatively be close to and the relative effort that produces through two metal contacts, and cushion through reset spring, avoid two metal contacts atress for a long time, reduce the interact effort between two metal contacts, avoid the too high problem that leads to the fact the damage of pressure that bears between two contacts of traditional device easily, contact life is higher.
As a further technical scheme of the invention, the self-cleaning assembly comprises an extension frame, the bottom end of the extension frame is connected with the top end of the upper fixing plate, the bottom end of the inner cavity of the extension frame is fixedly provided with the air storage tube, the piston plate is movably sleeved in the air storage tube, and the bottom end of the piston plate is fixedly connected with a piston rod positioned in the air storage tube.
As a further technical scheme of the invention, the bottom end of the piston rod penetrates through the bottom end of the gas storage tube and is connected with the limiting plate, the outer side face of the piston rod is movably sleeved with the limiting spring, the upper end and the lower end of the limiting spring are respectively connected with the bottom end of the gas storage tube and the top end of the limiting plate, the left side, close to the top end, of the gas storage tube is fixedly communicated with the gas inlet tube, and the right side, close to the top end, of the gas storage tube is fixedly communicated with the gas outlet tube.
As a further technical scheme of the invention, the other end of the exhaust pipe penetrates through the bottom end of the fixed plate and is positioned at one side of the contact assembly, the inside of the air inlet pipe and the inside of the exhaust pipe are respectively provided with one-way valves, and the directions of the valves are respectively conduction to the inside of the extension frame and cut off to the outside of the extension frame, and conduction to the outside of the extension frame and cut off to the inside of the extension frame.
When an electric field is applied to the device, the two fixing plates are relatively close to each other, the bottom end of the piston rod can be contacted with the top end of the lower fixing plate, along with the relative approach of the two fixing plates, the fixing plate positioned below applies upward pressure to the piston rod, the limiting spring is compressed and drives the piston plate to rise, the piston plate can apply pressure to air in the air storage tube, air is discharged through the exhaust tube and acts on the contact assembly to clean the surface of the contact assembly to a certain extent, partial oxidized powder is removed, and when the two fixing plates are relatively far away, the limiting spring can drive the piston plate to automatically reset and generate negative pressure in the air storage tube to suck external air into the air storage tube through the air inlet tube, temporary storage of the air is completed, and preparation is performed for the next automatic cleaning.
The piezoelectric effect of the first piezoelectric ceramic plate and the piezoelectric effect of the second piezoelectric ceramic plate are further utilized, the two fixing plates are close to each other by utilizing deformation generated by the piezoelectric effect, the circuit is closed by relatively approaching the two fixing plates, automatic ejection of air is realized, self-cleaning of the surface of the contact assembly is realized, automatic inhalation of external air is realized by utilizing the reset process of the device, namely, the circuit is disconnected, the whole process is automatically completed, the oxidation process can be slowed down to a certain extent, the reduction of the sensitivity of the relay caused by excessive oxidation of the contact is avoided, and the maintenance times of the relay are reduced.
The beneficial effects of the invention are as follows:
1. according to the invention, the first piezoelectric ceramic plate and the second piezoelectric ceramic plate which are mutually perpendicular are arranged, the stretching of the first piezoelectric ceramic plate and the compression of the second piezoelectric ceramic plate are realized by inputting the forward electric field and the reverse electric field by utilizing the piezoelectric effect, the relative approaching of the two fixing plates is realized by the stretching action of the first piezoelectric ceramic plate and the compression action of the second piezoelectric ceramic plate, and then the relative approaching of the two contact assemblies is realized.
2. According to the invention, the two contact assemblies are relatively close by utilizing the piezoelectric effect of the two mutually perpendicular first piezoelectric ceramic plates and the second piezoelectric ceramic plates, the metal contacts are arranged to be movable contacts, the two metal contacts are buffered by the relatively close and generated relative acting force of the two metal contacts and by the reset spring, so that the two metal contacts are prevented from being stressed for a long time, the interaction force between the two metal contacts is reduced, the problem that the two contacts of the traditional device are easily damaged due to too high pressure is avoided, and the service life of the contacts is longer.
3. According to the invention, the piezoelectric effect of the first piezoelectric ceramic plate and the second piezoelectric ceramic plate is further utilized, the two fixing plates are close by utilizing deformation generated by the piezoelectric effect, the circuit is closed by relatively closing the two fixing plates, the automatic ejection of air is realized at the same time, the self-cleaning of the surface of the contact assembly is realized, the automatic inhalation of external air is realized by utilizing the resetting of the device, namely the process of circuit disconnection, the whole process is automatically completed, the oxidation process can be slowed down to a certain extent, the reduction of the sensitivity of the relay caused by the excessive oxidation of the contact is avoided, and the maintenance times of the relay are reduced.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a schematic cross-sectional view of the internal structure of the protective housing of the present invention;
FIG. 3 is a schematic view of the present invention in a hidden protecting shell state;
FIG. 4 is an exploded view of a first piezoelectric ceramic tip structure according to the present invention;
FIG. 5 is an exploded view of a second piezoelectric ceramic tip structure according to the present invention;
fig. 6 is an isolated schematic view of the structure of the contact assembly of the present invention;
FIG. 7 is an isolated schematic view of the structure of the self-cleaning assembly of the present invention;
FIG. 8 is a schematic cross-sectional view of the internal structure of the self-cleaning assembly of the present invention.
In the figure: 1. a bottom plate; 2. a protective shell; 3. a first piezoelectric ceramic plate; 4. a second piezoelectric ceramic plate; 5. a fixed guide rail; 6. a clamping block; 7. a locking bolt; 8. a first fixing seat; 9. the second fixing seat; 10. a connecting rod; 11. a fixing plate; 12. a contact assembly; 121. a storage sleeve; 122. a rubber sleeve; 123. a metal contact; 124. a conductive rod; 125. an electrode plate; 126. a return spring; 13. a self-cleaning assembly; 131. an extension rack; 132. a gas storage tube; 133. a piston plate; 134. a piston rod; 135. an air inlet pipe; 136. an exhaust pipe; 137. a limit spring; 14. a first pin; 15. and a second pin.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1 to 8, in the embodiment of the invention, a piezoelectric ceramic relay includes a base plate 1, a protecting shell 2 is movably installed at the top end of the base plate 1, a first piezoelectric ceramic plate 3 located inside the protecting shell 2 is fixedly installed at the middle part of the top end of the base plate 1, a second piezoelectric ceramic plate 4 located inside the protecting shell 2 is fixedly installed at the middle part of the top end of the first piezoelectric ceramic plate 3, the second piezoelectric ceramic plate 4 is located above the first piezoelectric ceramic plate 3 and is mutually perpendicular to the first piezoelectric ceramic plate 3 and the second piezoelectric ceramic plate 4, a fixing plate 11 is arranged at the middle part above the first piezoelectric ceramic plate 3, fixing plates 11 arranged above the second piezoelectric ceramic plate 4 are arranged at the middle part of the first piezoelectric ceramic plate 3 and are respectively two, contact assemblies 12 are respectively embedded and installed at the middle parts of the two fixing plates 11, self-cleaning assemblies 13 are respectively fixedly installed at the front and rear sides of the top ends of the fixing plates 11 located above the first piezoelectric ceramic plate 3 and are respectively fixedly installed at the front and rear sides of the bottom ends of the first piezoelectric ceramic plate 4, pins 15 are respectively installed at the front and rear ends of the second piezoelectric ceramic plate 4 and the right sides of the first piezoelectric ceramic plate 4 and the second piezoelectric ceramic plate 14 are fixedly installed at the front and rear ends of the bottom ends 15.
Before practical use, the two first pins 14 and the second pins 15 are connected with an external electric field, wherein the two first pins 14 are externally connected with a positive electric field, the two second pins 15 are externally connected with a negative electric field, and meanwhile, the connecting wires of the two contact assemblies 12 can be connected with an external circuit to complete preparation before use.
As shown in fig. 2, fig. 3, fig. 4 and fig. 5, the left and right sides on the top end of the first piezoelectric ceramic plate 3 and the front and rear sides on the top end of the second piezoelectric ceramic plate 4 are fixedly provided with a fixed guide rail 5, the middle part on the top end of the fixed guide rail 5 is movably clamped with a clamping block 6, the bottom end of the clamping block 6 is provided with a locking bolt 7, the bottom end of the locking bolt 7 penetrates through the bottom end of the first piezoelectric ceramic plate 3 or the second piezoelectric ceramic plate 4, the clamping block 6 is fixed with the first piezoelectric ceramic plate 3 or the second piezoelectric ceramic plate 4 through the locking bolt 7, the top end of the clamping block 6 is fixedly provided with a first fixing seat 8, one end of the first fixing seat 8, far away from the clamping block 6, is movably connected with a connecting rod 10 through a rotating shaft, one end of the connecting rod 10, far away from the first fixing seat 8 is provided with a second fixing seat 9, the top end of the second fixing seat 9 is connected with the bottom end of the fixing plate 11, and the two second fixing seats 9 are positioned on two sides of the bottom end of the fixing plate 11.
Embodiment one:
when the circuit is switched on and off, a positive electric field can be applied to the first piezoelectric ceramic plate 3 through the first pin 14, a negative electric field can be applied to the second piezoelectric ceramic plate 4 through the second pin 15, at this time, the first piezoelectric ceramic plate 3 can be stretched under the action of the positive electric field, at this time, the upper two fixed guide rails 5 are relatively far away, the upper two connecting rods 10 deflect accordingly, the included angle between the two connecting rods 10 increases accordingly, at this time, the fixed plate 11 above the two connecting rods 10 descends accordingly, the middle contact assembly 12 is driven to descend accordingly, the second piezoelectric ceramic plate 4 can be compressed under the action of the negative electric field, at this time, the two connecting rods 10 deflect accordingly, at this time, the included angle between the two connecting rods 10 decreases accordingly, the fixed plate 11 above the two connecting rods 10 ascends accordingly, at this time, the upper and lower two fixed plates 11 are relatively close accordingly, and drive the two contact assemblies 12 to approach each other until the two contact assemblies 12 contact each other, the electric field is completed, and the two contact assemblies 12 are driven to close each other, and vice versa, the electric field is released, and the two contact assemblies 12 are completed.
Through being provided with the first piezoceramics plate 3 and the second piezoceramics plate 4 that two mutually perpendicular set up to utilize piezoelectric effect, realize the tensile of first piezoceramics plate 3 and the compression of second piezoceramics plate 4 through input forward electric field and reverse electric field, realize being close to relatively of two fixed plates 11 through the tensile effect of first piezoceramics plate 3 and the compression effect of second piezoceramics plate 4, and then realize being close to relatively of two contact assemblies 12, the effort that whole deformation in-process material received is even, avoid traditional device atress position excessive stress and then the problem that the precision that causes declines, can not influence contact and separation between the contact, life is higher.
As shown in fig. 2, 3 and 6, the contact assembly 12 includes a receiving sleeve 121, the receiving sleeve 121 is mounted with the middle part of the fixing plate 11, a conductive rod 124 is movably sleeved in the receiving sleeve 121, the conductive rod 124 can move up and down relative to the receiving sleeve 121, a metal contact 123 is fixedly mounted at the bottom end of the conductive rod 124, a rubber sleeve 122 is fixedly mounted at the bottom end of the receiving sleeve 121, the inner diameter of the rubber sleeve 122 is the same as the inner diameter of the receiving sleeve 121, the top end of the conductive rod 124 penetrates through the top end of the receiving sleeve 121 and is fixedly provided with an electrode plate 125, a reset spring 126 is movably sleeved on the outer side surface of the conductive rod 124, the upper end and the lower end of the reset spring 126 are respectively connected with the top end of the inner cavity of the receiving sleeve 121 and the bottom end of the metal contact 123, the electrode plate 125 is connected with an external circuit (not shown in the figure) through a connecting wire, the upper electrode plate 125 and the lower electrode plate 125 respectively correspond to the positive electrode and the negative electrode of the circuit, and the device is connected in series in the circuit through the two electrode plates 125.
Embodiment two:
when an electric field is applied to the device, the two contact assemblies 12 are relatively close, the distance between the two metal contacts 123 is shortened, when a preset threshold value is exceeded, the two metal contacts 123 are just contacted, the circuit is switched on, when the electric field is continuously applied and the electric field strength is increased, the two metal contacts 123 can be contacted with each other and apply opposite acting force to each other, the upper reset spring 126 and the lower reset spring 126 are compressed, the upper metal contacts 123 are upwardly displaced, the lower metal contacts 123 are downwardly displaced until the metal contacts 123 mostly enter the inside of the storage sleeve 121, the reset spring 126 can absorb impact force when the metal contacts 123 are inwardly contracted, and when the electric field is applied, the reset spring 126 can automatically reset to realize automatic reset of the metal contacts 123.
Through two mutually perpendicular's first piezoceramics board 3 and second piezoceramics board 4, utilize its piezoelectric effect to realize the relative of two contact assemblies 12 and be close to set up metal contact 123 into movable contact, through the relative effort that is close to and produces of two metal contacts 123, and cushion through reset spring 126, avoid two metal contacts 123 atress for a long time, reduce the interact power between two metal contacts 123, avoid the too high problem that leads to the fact the damage of pressure that bears between two contacts of traditional device easily, contact life is higher.
As shown in fig. 3 and 4 and fig. 7 and 8, the self-cleaning assembly 13 comprises an extension frame 131, the bottom end of the extension frame 131 is connected with the top end of the upper fixing plate 11, the bottom end of the inner cavity of the extension frame 131 is fixedly provided with a gas storage tube 132, a piston plate 133 is movably sleeved in the gas storage tube 132, the bottom end of the piston plate 133 is fixedly connected with a piston rod 134 positioned in the gas storage tube 132, the bottom end of the piston rod 134 penetrates through the bottom end of the gas storage tube 132 and is connected with a limiting plate, the outer side surface of the piston rod 134 is movably sleeved with a limiting spring 137, the upper end and the lower end of the limiting spring 137 are respectively connected with the bottom end of the gas storage tube 132 and the top end of the limiting plate, the left side, close to the top end, of the gas storage tube 132 is fixedly communicated with a gas inlet tube 135, the right side, close to the top end, of the gas storage tube 132 is fixedly communicated with a gas outlet tube 136, the other end of the gas outlet tube 136 penetrates through the bottom end of the fixing plate 11 and is positioned on one side of the contact assembly 12, and the directions of the gas inlet tube 135 and the gas outlet tube 136 are respectively provided with one-way valves and the directions of the one-way valves, which are respectively opened to the inside the extension frame 131 and are opened to the outside of the extension frame 131, and closed to the extension frame 131, and opened to the inside of the extension frame 131.
Embodiment III:
when an electric field is applied to the device, the two fixing plates 11 are relatively close to each other, the bottom ends of the piston rods 134 can be in contact with the top ends of the lower fixing plates 11, along with the relative approach of the two fixing plates 11, the fixing plates 11 positioned below apply upward pressure to the piston rods 134, the limiting springs 137 are compressed and drive the piston plates 133 to rise, the piston plates 133 can apply pressure to air in the air storage tubes 132, air is discharged through the exhaust tubes 136 and acts on the contact assemblies 12 to clean the surfaces of the contact assemblies 12 to a certain extent, partial oxidized powder is removed, and when the two fixing plates 11 are relatively far away, the limiting springs 137 can drive the piston plates 133 to automatically reset and generate negative pressure in the air storage tubes 132 to suck external air into the air storage tubes 132 through the air inlet tubes 135, so that temporary storage of the air is completed and preparation is made for the next automatic cleaning.
The piezoelectric effect of the first piezoelectric ceramic plate 3 and the second piezoelectric ceramic plate 4 is further utilized, the two fixing plates 11 are close by utilizing deformation generated by the piezoelectric effect, the circuit is closed by relatively approaching the two fixing plates 11, the automatic ejection of air is realized, the self-cleaning of the surface of the contact assembly 12 is realized, the automatic suction of external air is realized by utilizing the reset process of the device, namely the circuit breaking process, the whole process is automatically completed, the oxidation process can be slowed down to a certain extent, the reduction of the sensitivity of the relay caused by the excessive oxidation of the contact is avoided, and the maintenance times of the relay are reduced.
Working principle and using flow:
before practical use, the two first pins 14 and the second pins 15 are connected with an external electric field, wherein the two first pins 14 are externally connected with a positive electric field, the two second pins 15 are externally connected with a negative electric field, and meanwhile, the connecting wires of the two contact assemblies 12 can be connected with an external circuit to finish the preparation before use;
when the circuit is switched on and off, a positive electric field can be applied to the first piezoelectric ceramic plate 3 through the first pin 14, a negative electric field can be applied to the second piezoelectric ceramic plate 4 through the second pin 15, at the moment, the first piezoelectric ceramic plate 3 can be stretched under the action of the positive electric field, at the moment, the upper two fixed guide rails 5 are relatively far away, the upper two connecting rods 10 deflect along with the upper fixed guide rails, the included angle between the two connecting rods 10 is increased along with the upper fixed guide rails, at the moment, the fixed plate 11 above the two connecting rods 10 descends along with the fixed plate, the middle contact assembly 12 is driven to descend along with the fixed plate, the second piezoelectric ceramic plate 4 can be compressed under the action of the negative electric field, at the moment, the two connecting rods 10 deflect along with the fixed plate, the included angle between the two connecting rods 10 is reduced along with the fixed plate 11, at the moment, the upper and lower fixed plates 11 are relatively close along with the fixed guide rails, and the upper and lower fixed guide rails are driven to be close along with the fixed rails, until the two contact assemblies 12 contact with each other, the electric field is completed, and the contact assembly 12 is released, and the circuit is completed;
when an electric field is applied to the device, the two contact assemblies 12 are relatively close, the distance between the two metal contacts 123 is shortened, when a preset threshold value is exceeded, the two metal contacts 123 are just contacted, the circuit is switched on, when the electric field is continuously applied and the electric field strength is increased, the two metal contacts 123 can be contacted with each other and apply opposite acting force to each other, the upper reset spring 126 and the lower reset spring 126 are compressed, the upper metal contacts 123 are upwardly displaced, the lower metal contacts 123 are downwardly displaced until most of the metal contacts 123 enter the inside of the accommodating sleeve 121, the reset spring 126 can absorb impact force when the metal contacts 123 are inwardly contracted, and when the electric field is applied, the reset spring 126 can automatically reset to realize automatic reset of the metal contacts 123;
when an electric field is applied to the device, the two fixing plates 11 are relatively close to each other, the bottom ends of the piston rods 134 can be in contact with the top ends of the lower fixing plates 11, along with the relative approach of the two fixing plates 11, the fixing plates 11 positioned below apply upward pressure to the piston rods 134, the limiting springs 137 are compressed and drive the piston plates 133 to rise, the piston plates 133 can apply pressure to air in the air storage tubes 132, air is discharged through the exhaust tubes 136 and acts on the contact assemblies 12 to clean the surfaces of the contact assemblies 12 to a certain extent, partial oxidized powder is removed, and when the two fixing plates 11 are relatively far away, the limiting springs 137 can drive the piston plates 133 to automatically reset and generate negative pressure in the air storage tubes 132 to suck external air into the air storage tubes 132 through the air inlet tubes 135, so that temporary storage of the air is completed and preparation is made for the next automatic cleaning.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. A piezoelectric ceramic relay comprising a base plate (1), characterized in that: the utility model discloses a cleaning device, including bottom plate (1), first piezoceramics board (3) that bottom plate (1) top movable mounting has protective housing (2), the middle part fixed mounting in bottom plate (1) top has first piezoceramics board (3) that are located protective housing (2) inside, the middle part fixed mounting in first piezoceramics board (3) top has second piezoceramics board (4) that are located protective housing (2), second piezoceramics board (4) are located the top of first piezoceramics board (3) and mutually perpendicular between first piezoceramics board (3) and second piezoceramics board (4), the middle part of first piezoceramics board (3) top is equipped with fixed plate (11), the middle part of second piezoceramics board (4) top also is equipped with fixed plate (11), the quantity of fixed plate (11) is two, and fixed plate (11) that set up in first piezoceramics board (3) top are located the top of setting in second piezoceramics board (4), and two the middle part of fixed plate (11) is all inlayed and is installed contact assembly (12), two contact assembly (12) are installed in the top of setting up on the first piezoceramics board (3) top (13) and the top of the fixed side of first piezoceramics board (13), the front side and the rear side of the bottom end of the second piezoelectric ceramic plate (4) are fixedly provided with second pins (15), and the bottom ends of the first pins (14) and the second pins (15) penetrate through the bottom end of the bottom plate (1).
2. A piezoelectric ceramic relay according to claim 1, wherein: the left and right sides on first piezoceramics board (3) top with both sides all fixed mounting has fixed guide (5) around second piezoceramics board (4) top, the equal movable joint in middle part on fixed guide (5) top has fixture block (6), locking bolt (7) are all installed to the bottom of fixture block (6).
3. A piezoelectric ceramic relay according to claim 2, wherein: the bottom of locking bolt (7) runs through the bottom of first piezoceramics board (3) or second piezoceramics board (4), fixture block (6) are fixed mutually between through locking bolt (7) and first piezoceramics board (3) or second piezoceramics board (4), the equal fixed mounting in top of fixture block (6) has first fixing base (8), the one end that fixture block (6) was kept away from to first fixing base (8) has connecting rod (10) through pivot swing joint.
4. A piezoelectric ceramic relay according to claim 3, wherein: one end of the connecting rod (10) far away from the first fixing seat (8) is movably connected with a second fixing seat (9) through a rotating shaft, the top ends of the second fixing seats (9) are connected with the bottom ends of the fixing plates (11), and the two second fixing seats (9) are positioned on two sides of the bottom ends of the fixing plates (11).
5. A piezoelectric ceramic relay according to claim 1, wherein: the contact assembly (12) comprises a storage sleeve (121), the storage sleeve (121) is embedded in the middle of the fixed plate (11), a conductive rod (124) is movably sleeved in the storage sleeve (121), the conductive rod (124) can relatively move up and down with respect to the storage sleeve (121), and a metal contact (123) is fixedly arranged at the bottom end of the conductive rod (124).
6. A piezoelectric ceramic relay according to claim 5, wherein: the bottom fixed mounting who accomodates cover (121) has rubber cover (122), the internal diameter of rubber cover (122) and accomodate cover (121) is the same, the internal diameter of rubber cover (122) is the same with the diameter of metal contact (123), the top of conducting rod (124) runs through the top of accomodating cover (121) and fixed mounting has electrode plate (125).
7. A piezoelectric ceramic relay according to claim 5, wherein: the outer side surface of the conducting rod (124) is movably sleeved with a return spring (126), and the upper end and the lower end of the return spring (126) are respectively connected with the top end of the inner cavity of the storage sleeve (121) and the top end of the bottom end of the metal contact (123).
8. A piezoelectric ceramic relay according to claim 1, wherein: the self-cleaning assembly (13) comprises an extension frame (131), the bottom end of the extension frame (131) is connected with the top end of the upper fixing plate (11), an air storage pipe (132) is fixedly arranged at the bottom end of an inner cavity of the extension frame (131), a piston plate (133) is movably sleeved in the air storage pipe (132), and a piston rod (134) arranged in the air storage pipe (132) is fixedly connected with the bottom end of the piston plate (133).
9. A piezoelectric ceramic relay according to claim 8, wherein: the bottom of piston rod (134) runs through the bottom of gas storage tube (132) and is connected with the limiting plate, limit spring (137) has been cup jointed in the lateral surface activity of piston rod (134), the upper and lower both ends of limit spring (137) are connected with the bottom and the top of limiting plate of gas storage tube (132) respectively, the left side fixed intercommunication that gas storage tube (132) is close to the top has intake pipe (135), the right side fixed intercommunication that gas storage tube (132) is close to the top has blast pipe (136).
10. A piezoelectric ceramic relay according to claim 9, wherein: the other end of the exhaust pipe (136) penetrates through the bottom end of the fixed plate (11) and is positioned on one side of the contact assembly (12), and the air inlet pipe (135) and the exhaust pipe (136) are respectively provided with one-way valves in the directions of being conducted towards the inside of the extension frame (131) and being cut off towards the outside of the extension frame (131) and being conducted towards the outside of the extension frame (131) and being cut off towards the inside of the extension frame (131).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310510653.3A CN116564760A (en) | 2023-05-08 | 2023-05-08 | Piezoelectric ceramic relay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310510653.3A CN116564760A (en) | 2023-05-08 | 2023-05-08 | Piezoelectric ceramic relay |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116564760A true CN116564760A (en) | 2023-08-08 |
Family
ID=87501240
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310510653.3A Pending CN116564760A (en) | 2023-05-08 | 2023-05-08 | Piezoelectric ceramic relay |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116564760A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116759246A (en) * | 2023-08-17 | 2023-09-15 | 江苏北高电气科技有限公司 | Switch device for electric power |
-
2023
- 2023-05-08 CN CN202310510653.3A patent/CN116564760A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116759246A (en) * | 2023-08-17 | 2023-09-15 | 江苏北高电气科技有限公司 | Switch device for electric power |
| CN116759246B (en) * | 2023-08-17 | 2023-10-24 | 江苏北高电气科技有限公司 | Switch device for electric power |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN116564760A (en) | Piezoelectric ceramic relay | |
| CN115172976A (en) | Lithium battery component | |
| CN208651767U (en) | A kind of novel pneumatic solenoid valve | |
| CN110223884A (en) | A kind of contact monitoring device of high voltage direct current relay | |
| CN209698379U (en) | Loading assemblies are used in the assembly of new-energy automobile coldplate core | |
| CN208745951U (en) | An anti-collision device applied to an industrial robot | |
| CN104701040B (en) | A kind of cleaning machine with switch box structure | |
| CN215772797U (en) | Damping base of diesel generating set | |
| CN211779135U (en) | Novel four-way valve | |
| CN204449836U (en) | Front fork of electric vehicle pressure bowl machine | |
| CN223270302U (en) | A cylinder gas cut-off self-locking mechanism | |
| CN109469059B (en) | Method and device for quickly lifting hydraulic pile hammer | |
| CN218462866U (en) | Push rod forced resetting mechanism of double-color injection mold | |
| CN209326889U (en) | A kind of pressure reducing valve sealing test device | |
| CN108747585B (en) | Machine tool spindle clamping force on-line monitoring system | |
| CN214036896U (en) | Dust removal pulse valve for desulfurization | |
| CN221994367U (en) | An oil buffer structure for ZN63A vacuum circuit breaker | |
| CN113037026A (en) | Internal support positioning tool for intelligent manufacturing motor armature installation and transfer | |
| CN222067621U (en) | Fuel tank isolation valve with noise reduction structure | |
| CN208208578U (en) | A kind of movable contact spring component of D.C. high-current appliance switch | |
| CN215496545U (en) | Manual brake separating device of vacuum contactor | |
| CN218182128U (en) | Electromagnetic switch | |
| CN210218053U (en) | Water pump structure with suction type electromagnetic valve | |
| CN218996620U (en) | High-reliability relay soft row | |
| CN2920450Y (en) | New type dust exhaust apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |