CN214471311U - Double-magnetic-circuit sensor capable of being automatically controlled - Google Patents
Double-magnetic-circuit sensor capable of being automatically controlled Download PDFInfo
- Publication number
- CN214471311U CN214471311U CN202120829500.1U CN202120829500U CN214471311U CN 214471311 U CN214471311 U CN 214471311U CN 202120829500 U CN202120829500 U CN 202120829500U CN 214471311 U CN214471311 U CN 214471311U
- Authority
- CN
- China
- Prior art keywords
- extension rod
- rod
- automatic control
- circuit sensor
- sliding
- 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.)
- Active
Links
Images
Landscapes
- Geophysics And Detection Of Objects (AREA)
Abstract
The application discloses ability automatic control's double magnetic circuit sensor belongs to the magnetic circuit sensor field, including yoke, connecting rod, extension rod, fixture block, automatic control subassembly, wiring board, permanent magnet, flexure strip and wire winding support. Two wiring boards set up relatively, and the yoke is installed between two wiring boards, and the wire winding support passes through the flexure strip to be connected with the yoke, and extension rod and connecting rod are connected with the flexure strip, and automatic control subassembly control fixture block forms the joint with the extension rod or leaves the extension rod. The utility model discloses a can automatic control's double magnetic circuit sensor loses the electricity back at the automatic control subassembly, and the fixture block forms the joint with the extension rod, can form the support to the extension rod, makes the flexure strip can not take place deformation under conventional state to form the protection to the flexure strip, and then guarantee that can automatic control's double magnetic circuit sensor all has higher sensitivity and precision constantly. After the automatic control assembly is electrified, the clamping block is separated from the extension rod, and the extension rod and the winding support can move freely.
Description
Technical Field
The utility model relates to a magnetic circuit sensor field particularly, relates to a two magnetic circuit sensor of ability automatic control.
Background
The magnetoelectric sensor converts the input motion speed into an induced potential in a coil and outputs the induced potential by utilizing the principle of electromagnetic induction. The sensor directly converts the mechanical energy of a measured object into an electric signal to be output, does not need an external power supply during working, and is a typical passive sensor. In a magnetoelectric sensor, an elastic member is generally provided to transmit an input motion.
When current magnetoelectric sensor is not using, the elastic component is still in the deformation state under the action of gravity of other components, is in the deformation state after for a long time, and the elastic component can produce irreversible deformation, and then makes magnetoelectric sensor's sensitivity and precision descend.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a can automatic control's double-magnetic circuit sensor is disclosed to improve foretell problem.
The utility model provides a technical scheme that its technical problem adopted is:
based on foretell purpose, the utility model discloses a can automatic control's double magnetic circuit sensor, include:
two wiring boards, which are arranged oppositely;
the yoke is arranged between the two wiring boards, the yoke is I-shaped, the yoke comprises two spaces and a mounting hole for communicating the two spaces, and the two spaces are respectively arranged in one-to-one correspondence with the two wiring boards;
the two permanent magnets are respectively positioned in the two spaces, and the N poles or the S poles of the two permanent magnets are abutted with the middle part of the yoke iron;
the two elastic pieces are respectively arranged on two sides of the yoke, and the elastic pieces and the wiring board are arranged at intervals;
the two winding supports are respectively wound with a first coil, the first coil is provided with a wiring end, and the two winding supports are respectively fixedly connected with the two elastic sheets;
the connecting rod is arranged in the mounting hole in a sliding mode, and two ends of the connecting rod are connected with the two elastic pieces respectively;
the extension rod is arranged at one end of the connecting rod and is in sliding connection with one of the wiring boards, and a clamping groove is formed in the side wall of the extension rod and extends along the axis of the extension rod;
the fixture block is connected with the wiring board in a sliding mode, and the height of the fixture block in the axial direction of the extension rod is smaller than the length of the clamping groove; and
the automatic control assembly is communicated with the first coil through a wire, when the automatic control assembly is powered on, the fixture block is controlled to move towards the direction deviating from the clamping groove, and when the automatic control assembly is powered off, the fixture block is controlled to move towards the clamping groove.
Optionally: the automatic control assembly includes:
the elastic piece is arranged between the clamping block and the wiring board, and the elastic piece enables the clamping block to have a tendency of moving towards the clamping groove;
a second coil in communication with the first coil through the wire; and
the magnetic part is positioned in the second coil, the magnetic part is connected with the wiring board in a sliding mode, and the clamping block is connected with the magnetic part; when the second coil is electrified, the magnetic part drives the clamping block to move towards the direction deviating from the clamping groove.
Optionally: the wiring board is provided with a through hole and a groove, the groove is communicated with the through hole, the extension rod is clamped in the through hole, and the elastic piece, the magnetic piece and the fixture block are located in the groove.
Optionally: the groove is obliquely arranged, and one end of the groove, which is deviated from the through hole, is inclined towards the elastic sheet.
Optionally: the automatic control assembly further comprises a manual control structure, and the manual control structure is used for opening or closing the clamping groove.
Optionally: the manual control structure comprises a sliding block, the sliding block is connected with the extension rod in a sliding mode, and the sliding block slides to enable the clamping groove to be opened or closed.
Optionally: the manual control structure further comprises:
the rack is connected with the extension rod in a sliding mode and fixedly connected with the sliding block, and the sliding directions of the rack and the sliding block are perpendicular to the axis of the extension rod; and
the control rod, the control rod with the extension rod rotates and is connected, be provided with on the control rod be used for with the tooth that the rack meshes mutually.
Optionally: the control lever can also be followed the axis of extension rod for the extension rod slides, be provided with the fixed slot on the extension rod, slide the control lever so that tooth card on the control lever is gone into or is left the fixed slot.
Optionally: the extension rod is provided with a first sliding groove and a second sliding groove, the extension direction of the first sliding groove is perpendicular to the axis of the extension rod, the first sliding groove is communicated with the clamping groove, and the rack and the sliding block are positioned in the first sliding groove; the second spout is followed the axis of extension pole extends, the second spout with first spout intercommunication, control to live the pole and be located in the second spout.
Optionally: the height of the teeth is greater than the height of the rack.
Compared with the prior art, the utility model discloses the beneficial effect who realizes is:
the utility model discloses a when ability automatic control's double magnetic circuit sensor used, the yoke was connected with mounting (for example the building), under the vibration effect (for example the earthquake), connecting rod and two first coil synchronous vibration to cutting magnetic induction line, thereby making two first coils all produce the electromotive force signal.
One of them first coil can be connected with the automatic control subassembly, under conventional state, the fixture block has only restricted an activity direction of extension rod with the cooperation of draw-in groove, when the dual magnetic circuit sensor that can automatic control accepts the vibration, the extension rod can be followed another direction and produced and slided, can make the interior production electromotive force of first coil this moment, and then make the automatic control subassembly electric, the fixture block leaves the draw-in groove after the automatic control subassembly electric, the fixture block no longer causes the restriction to the activity of extension rod this moment, the extension rod, connecting rod and wire winding support can vibrate wantonly. And after the automatic control subassembly loses the electricity, the fixture block is gone into the draw-in groove again in, utilizes the fixture block can form the support to the extension rod, and then forms the support to bracing piece, wire winding support and flexure strip, makes the flexure strip can not take place deformation under conventional state to form the protection to the flexure strip, and then guarantee that the dual magnetic circuit sensor that can automatic control all has higher sensitivity and precision constantly.
The other first coil can be connected with an external device, namely the electromotive force signal can be stored and analyzed, and reliable data reference is provided for scientific research.
Drawings
Fig. 1 shows a schematic diagram of an automatically controllable dual magnetic circuit sensor disclosed in the embodiment of the present invention;
fig. 2 shows a partial enlarged view of fig. 1 disclosed in an embodiment of the present invention;
fig. 3 is a schematic diagram of a manual control structure disclosed in an embodiment of the present invention;
FIG. 4 is a schematic view of an extension pole disclosed in an embodiment of the present invention;
fig. 5 shows a schematic diagram of a wiring board disclosed in an embodiment of the present invention.
In the figure:
100-a patch panel; 110-a via; 120-grooves; 200-a yoke; 210-space; 300-a permanent magnet; 400-an elastic sheet; 500-an extension pole; 510-a chute; 521-a first chute; 530-a second chute; 540-fixed groove; 600-a winding bracket; 610-a first coil; 620-wire; 700-connecting rod; 800-an automatic control assembly; 810-an elastic member; 820-a second coil; 830-a magnetic member; 840-manual control structure; 841-a slide block; 842-rack bar; 843-control lever; 900-fixture block.
Detailed Description
Example (b):
referring to fig. 1 to 5, an embodiment of the present invention discloses an automatically controllable dual magnetic circuit sensor, which includes a yoke 200, a connecting rod 700, an extension rod 500, a fixture block 900, an automatic control assembly 800, two wiring boards 100, two permanent magnets 300, two elastic sheets 400, and two winding brackets 600.
The two wiring boards 100 are oppositely arranged, the yoke 200 is installed between the two wiring boards 100, the yoke 200 is in an I shape, the yoke 200 comprises two spaces 210 and an installation hole for communicating the two spaces 210, the spaces 210 are arranged towards the wiring boards 100, and the two spaces 210 are respectively arranged in one-to-one correspondence with the two wiring boards 100.
The two permanent magnets 300 are respectively installed in the two spaces 210, the N poles or the S poles of the two permanent magnets 300 are abutted to the middle portion of the yoke 200, that is, the magnetic poles of the two permanent magnets 300 are oppositely arranged, so that the yoke 200 is integrally N poles or S poles, and the two ends of the yoke 200 are oppositely arranged to the corresponding permanent magnets 300, thereby forming a stable magnetic field.
The winding support 600 is sleeved on the permanent magnets 300, the two winding supports 600 are respectively arranged corresponding to the two permanent magnets 300 one by one, the end of the winding support 600 is connected with the end of the yoke 200 through the elastic sheet 400, and the elastic sheet 400 and the yoke 200 are arranged at intervals so that the winding support 600 can swing. When the winding support 600 drives the first coil 610 to swing back and forth, the first coil 610 can cut the magnetic induction line, so that electromotive force is generated in the first coil 610.
The connecting rod 700 is disposed in the mounting hole, and both ends of the connecting rod 700 are respectively connected with the two elastic pieces 400, so that the two elastic pieces 400 can swing synchronously. The extension bar 500 is installed at one end of the connection bar 700, and the extension bar 500 penetrates through one of the terminal blocks 100 and forms a sliding connection with the terminal block 100. The side wall of the extension rod 500 is provided with a clamping groove 510, the clamping groove 510 extends along the axial direction of the extension rod 500, the clamping block 900 is slidably connected with the wiring board 100, the clamping block 900 is slid, so that the clamping block 900 is clamped into or separated from the range of the clamping groove 510, in addition, the height of the clamping block 900 along the axial direction of the extension rod 500 can be smaller than the length of the clamping groove 510, so that when the clamping block 900 is clamped into the clamping groove 510, the extension rod 500 is only limited in one direction, and the extension rod 500 can slide along the other direction.
The automatic control assembly 800 is communicated with the first coil 610 through the wire 620, when the automatic control assembly 800 is powered on, the clamping block 900 is controlled to move towards the direction departing from the clamping groove 510, and when the automatic control assembly 800 is powered off, the clamping block 900 is controlled to move towards the clamping groove 510.
When the automatically controllable dual magnetic circuit sensor disclosed in this embodiment is used, the yoke 200 is connected to a fixed member (e.g., a building), and under the vibration (e.g., an earthquake), the connecting rod 700 and the two first coils 610 vibrate synchronously and cut the magnetic induction lines, so that the two first coils 610 generate electromotive force signals.
One of them first coil 610 can be connected with automatic control subassembly 800, under conventional state, the cooperation of fixture block 900 and draw-in groove 510 has only restricted a movable direction of extension rod 500, when the dual magnetic circuit sensor that can automatic control accepts the vibration, extension rod 500 can produce the slip along another direction, can make the interior electromotive force that produces of first coil 610 this moment, and then make automatic control subassembly 800 electrified, fixture block 900 leaves draw-in groove 510 after automatic control subassembly 800 electrified, fixture block 900 no longer causes the restriction to the activity of extension rod 500 this moment, extension rod 500, connecting rod 700 and wire winding support 600 can vibrate wantonly. And after automatic control assembly 800 loses the electricity, in fixture block 900 card income draw-in groove 510 again, utilize fixture block 900 can form the support to extension rod 500, and then form the support to bracing piece, wire winding support 600 and flexure strip 400, make flexure strip 400 can not take place deformation under conventional state to form the protection to flexure strip 400, and then guarantee that the dual magnetic circuit sensor that can automatic control all has higher sensitivity and precision constantly.
The other first coil 610 can be connected with an external device, so that the electromotive force signal can be stored and analyzed, and reliable data reference is provided for scientific research.
In some embodiments of the present embodiment, the automatic control assembly 800 may include an elastic member 810, a second coil 820, and a magnetic member 830.
The elastic member 810 is installed between the latch 900 and the wiring board 100, and the elastic member 810 makes the latch 900 have a tendency to move toward the latch groove 510. The second coil 820 is communicated with the first coil 610 through a wire 620, the magnetic member 830 is positioned in the second coil 820, the magnetic member 830 is connected with the wiring board 100 in a sliding manner, and the fixture block 900 is connected with the magnetic member 830; when the second coil 820 is powered, the magnetic member 830 drives the latch 900 to move in a direction away from the slot 510.
When the second coil 820 loses power, the latch 900 is pushed into the slot 510 under the action of the elastic element 810, when the second coil 820 is powered on, the magnetic element 830 can drive the latch 900 to move towards the direction departing from the slot 510, at this time, the magnetic element 830 and the latch 900 overcome the acting force of the elastic element 810 to enable the latch 900 to leave the slot 510, and in the process that the extension rod 500 continuously swings, the second coil 820 is continuously powered on, so that the latch 900 is always located outside the slot 510.
The wiring board 100 can be provided with a through hole 110 and a groove 120, the groove 120 is communicated with the through hole 110, the extension rod 500 is clamped in the through hole 110, and the elastic element 810, the magnetic element 830 and the fixture block 900 are positioned in the groove 120.
Further, the groove 120 may be disposed obliquely, and an end of the groove 120 away from the through hole 110 is inclined toward the elastic sheet 400. On one hand, when the second coil 820 loses power, after the clamping block 900 is clamped in the clamping groove 510, the extension rod 500 can be buffered due to the existence of the elastic element 810 in the process of stopping swinging; on the other hand, when the automatically controllable dual magnetic circuit sensor is subjected to severe vibration, if the vibration wave first faces downward, the extension rod 500 can directly utilize a large pressure to press the fixture block 900 into the groove 120, and the second coil 820 is powered to stop the fixture block 900 in the groove 120 in the process.
The automatic control assembly 800 in this embodiment may further include a manual control structure 840, the manual control structure 840 being used to open or close the card slot 510. When the automatically-controlled dual-magnetic-circuit sensor needs to be stored for a long time (for example, the sensor is in a selling state just after production is completed), the manual control structure 840 controls the clamping groove 510 to be in an open state, and at the moment, the clamping block 900 is used for supporting the extension rod 500 to protect the elastic piece 400;
when the frequency of the double-magnetic-circuit sensor capable of being automatically controlled needs to be used is higher, the clamping groove 510 can be in a closed state through the manual control structure 840, so that the double-magnetic-circuit sensor capable of being automatically controlled can be better used;
when the use frequency of the double-magnetic-circuit sensor capable of being automatically controlled is uncertain (i.e. the double-magnetic-circuit sensor capable of being automatically controlled is used in an indefinite time), the clamping groove 510 can be controlled to be in an open state by the manual control structure 840, so that the elastic sheet 400 can be protected and can also normally work after encountering vibration.
Specifically, control structure can include slider 841, rack 842 and control rod 843, slider 841 and extension rod 500 sliding connection, slider 841 slides so that draw-in groove 510 is opened or is sealed, rack 842 and extension rod 500 sliding connection, and rack 842 and slider 841 fixed connection, the slip direction of rack 842 and slider 841 is perpendicular with the axis of extension rod 500, control rod 843 rotates with extension rod 500 to be connected, be provided with on the control rod 843 and be used for the tooth that meshes mutually with rack 842.
The position of the sliding block 841 can be controlled by screwing the control rod 843, for example, when the control rod 843 is screwed forward, the sliding block 841 can be driven by the rack 842 to seal the clamping groove 510, and when the control rod 843 is screwed backward, the sliding block 841 can be driven by the rack 842 to leave the clamping groove 510, so that the clamping block 900 and the clamping groove 510 can be matched.
As a preferred embodiment of this embodiment, a first sliding chute 521, a second sliding chute 530 and a fixing groove 540 may be disposed on the extension rod 500, an extending direction of the first sliding chute 521 is perpendicular to an axis of the extension rod 500, the first sliding chute 521 is communicated with the slot 510, and the rack 842 and the slider 841 are located in the first sliding chute 521; the second sliding groove 530 extends along the axis of the extension rod 500, the second sliding groove 530 is communicated with the first sliding groove 521, the control rod is located in the second sliding groove 530, the fixing groove 540 is communicated with the second sliding groove 530, and the control rod 843 can enter or leave the fixing groove 540.
The length of the second sliding groove 530 is long, so that the control rod 843 can slide in the second sliding groove 530, that is, the control rod 843 can rotate relative to the extension rod 500 and can slide relative to the extension rod 500, the control rod 843 can slide relative to the extension rod 500 along the axis of the extension rod 500, the shape of the fixing groove 540 is matched with the shape of the teeth on the control rod 843, after the control rod 843 is clamped into the fixing groove 540, the control rod 843 cannot continue to rotate, and after the control rod is separated from the fixing groove 540, the control rod 843 can rotate.
It should be noted that in this embodiment, the height of the teeth should be greater than the height of the rack 842, so that the control rod 843 is always engaged with the rack 842 during the sliding of the control rod 843, and the position of the rack 842 and the slider 841 is defined by the control rod 843.
In order to ensure that the control rod 843 can be smoothly clamped into the fixing groove 540, the control rod 843 can be controlled to slide in the extension rod 500 after the control rod 843 is rotated to the extreme position, and at this time, the control rod 843 can be smoothly clamped into the fixing groove 540.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (10)
1. An automatically controllable dual magnetic circuit sensor, comprising:
two wiring boards, which are arranged oppositely;
the yoke is arranged between the two wiring boards, the yoke is I-shaped, the yoke comprises two spaces and a mounting hole for communicating the two spaces, and the two spaces are respectively arranged in one-to-one correspondence with the two wiring boards;
the two permanent magnets are respectively positioned in the two spaces, and the N poles or the S poles of the two permanent magnets are abutted with the middle part of the yoke iron;
the two elastic pieces are respectively arranged on two sides of the yoke, and the elastic pieces and the wiring board are arranged at intervals;
the two winding supports are respectively wound with a first coil, the first coil is provided with a wiring end, and the two winding supports are respectively fixedly connected with the two elastic sheets;
the connecting rod is arranged in the mounting hole in a sliding mode, and two ends of the connecting rod are connected with the two elastic pieces respectively;
the extension rod is arranged at one end of the connecting rod and is in sliding connection with one of the wiring boards, and a clamping groove is formed in the side wall of the extension rod and extends along the axis of the extension rod;
the fixture block is connected with the wiring board in a sliding mode, and the height of the fixture block in the axial direction of the extension rod is smaller than the length of the clamping groove; and
the automatic control assembly is communicated with the first coil through a wire, when the automatic control assembly is powered on, the fixture block is controlled to move towards the direction deviating from the clamping groove, and when the automatic control assembly is powered off, the fixture block is controlled to move towards the clamping groove.
2. An automatically controllable dual magnetic circuit sensor according to claim 1, wherein said automatic control assembly comprises:
the elastic piece is arranged between the clamping block and the wiring board, and the elastic piece enables the clamping block to have a tendency of moving towards the clamping groove;
a second coil in communication with the first coil through the wire; and
the magnetic part is positioned in the second coil, the magnetic part is connected with the wiring board in a sliding mode, and the clamping block is connected with the magnetic part; when the second coil is electrified, the magnetic part drives the clamping block to move towards the direction deviating from the clamping groove.
3. The sensor of claim 2, wherein the wiring board is provided with a through hole and a groove, the groove is communicated with the through hole, the extension rod is clamped in the through hole, and the elastic member, the magnetic member and the clamping block are located in the groove.
4. An automatically controllable dual magnetic circuit sensor according to claim 3, wherein said recess is inclined, and an end of said recess facing away from said through hole is inclined toward said elastic piece.
5. An automatically controllable dual magnetic circuit sensor according to claim 2, wherein said automatic control assembly further comprises a manual control structure for opening or closing said card slot.
6. The automatically controllable dual magnetic circuit sensor according to claim 5, wherein said manual control structure comprises a slider, said slider is slidably connected to said extension rod, and said slider is slid to open or close said slot.
7. The automatically controllable dual magnetic circuit sensor according to claim 6, wherein said manual control structure further comprises:
the rack is connected with the extension rod in a sliding mode and fixedly connected with the sliding block, and the sliding directions of the rack and the sliding block are perpendicular to the axis of the extension rod; and
the control rod, the control rod with the extension rod rotates and is connected, be provided with on the control rod be used for with the tooth that the rack meshes mutually.
8. An automatically controllable dual magnetic circuit sensor according to claim 7, wherein said control rod is also slidable relative to said extension rod along the axis of said extension rod, said extension rod being provided with a retaining groove, sliding said control rod to allow teeth on said control rod to snap into or out of said retaining groove.
9. The sensor with the double magnetic circuits capable of being automatically controlled according to claim 8, wherein the extension rod is provided with a first sliding slot and a second sliding slot, the extending direction of the first sliding slot is perpendicular to the axis of the extension rod, the first sliding slot is communicated with the clamping slot, and the rack and the sliding block are located in the first sliding slot; the second spout is followed the axis of extension pole extends, the second spout with first spout intercommunication, control to live the pole and be located in the second spout.
10. An automatically controllable dual magnetic circuit sensor according to claim 8, wherein the height of said teeth is greater than the height of said rack.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120829500.1U CN214471311U (en) | 2021-04-21 | 2021-04-21 | Double-magnetic-circuit sensor capable of being automatically controlled |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120829500.1U CN214471311U (en) | 2021-04-21 | 2021-04-21 | Double-magnetic-circuit sensor capable of being automatically controlled |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214471311U true CN214471311U (en) | 2021-10-22 |
Family
ID=78179981
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120829500.1U Active CN214471311U (en) | 2021-04-21 | 2021-04-21 | Double-magnetic-circuit sensor capable of being automatically controlled |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214471311U (en) |
-
2021
- 2021-04-21 CN CN202120829500.1U patent/CN214471311U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN214471311U (en) | Double-magnetic-circuit sensor capable of being automatically controlled | |
| CN112964353B (en) | Double-magnetic-circuit sensor | |
| CN109882052B (en) | Noise-proof suspension window for aquaculture plant | |
| CN202094839U (en) | System-buffeting elimination and control device for linear motor slip form control | |
| CN210487069U (en) | Vehicle vibration detection alarm sensor device | |
| CN210111829U (en) | Miniature closed-loop voice coil motor driving device | |
| CN202058654U (en) | Magnetic maintaining intelligent switch | |
| CN211630064U (en) | Clamp | |
| CN208862724U (en) | A kind of voice coil motor using coil substitution Hall original part | |
| CN209982305U (en) | Electromagnetic vibrator | |
| CN202280348U (en) | Intelligent door window control device | |
| CN209389917U (en) | A kind of permanent magnetic linear synchronous motor device for suspending door | |
| CN211321188U (en) | Linear motor structure for telescopic sliding door | |
| CN108321056B (en) | Circuit breaker pushed by electromagnet | |
| CN104426321A (en) | Linear motor for elevator door opener | |
| CN209085741U (en) | A kind of electronic loadometer display device | |
| CN111794621A (en) | Magnetic attraction type door stopper with buffering function | |
| CN208209777U (en) | A kind of linear motor applied to suspension type tracks of permanent magnetism | |
| CN209120029U (en) | Energy conversion device and power-equipment including it | |
| US4516062A (en) | Actuator | |
| CN203984211U (en) | The brushless DC motor that a kind of position transducer is adjustable | |
| CN209724050U (en) | A kind of magnetic suspension electric horizontal-opening window guide rail | |
| CN216528654U (en) | Contactor with emergency device | |
| CN211559666U (en) | Curtain drawing guide mechanism and curtain drawing assembly | |
| CN218004260U (en) | Ampere force demonstrator for teaching |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |