CN210984637U - Magnetic circuit improved telescopic push rod relay - Google Patents
Magnetic circuit improved telescopic push rod relay Download PDFInfo
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- CN210984637U CN210984637U CN201921842343.7U CN201921842343U CN210984637U CN 210984637 U CN210984637 U CN 210984637U CN 201921842343 U CN201921842343 U CN 201921842343U CN 210984637 U CN210984637 U CN 210984637U
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- push rod
- electromagnetic coil
- arm part
- magnet ring
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Abstract
The utility model relates to the technical field of relays, in particular to a magnetic circuit improved telescopic push rod relay, which comprises a movably arranged push rod component and an electromagnet component for driving the push rod component to move; the electromagnet assembly comprises an iron core, an electromagnetic coil sleeved outside the iron core and a magnet ring positioned in the electromagnetic coil; the push rod component is provided with a movable armature; the direction of the magnetic field of the magnet ring is the same as or opposite to the direction of the magnetic field generated after the electromagnetic coil is electrified; the electromagnetic coil is electrified with forward current, the magnetic field of the magnet ring is superposed with the magnetic field generated after the electromagnetic coil is electrified, so that the attraction capacity of the coil is improved, the iron core has large magnetic force to drive the armature to move, and compared with the electromagnetic coil which is singly used, the power of the electromagnetic coil is reduced, and the electromagnetic coil is prevented from being burnt out due to high-power heating; the small-power electromagnetic coil reduces the volume of the coil, so that the volume of the electromagnet is reduced, the volume of the whole relay is further reduced, and the relay meets the requirement of miniaturization specifications.
Description
Technical Field
The utility model relates to a relay technical field especially discloses a flexible push rod relay of magnetic circuit improvement formula.
Background
The relay is one of automatic switches commonly used in various circuits, the relay is various in types, the electromagnetic relay is one of the relays, the electromagnetic relay drives a contact assembly to be switched on or off through magnetic force generated by a coil, in order to enable the contact assembly to have larger driving force, the power of the coil needs to be increased, and the volume of a high-power coil is larger, so that the volume of the whole relay is larger and does not meet the requirement of a miniaturized specification. The high-power coil is easy to burn out due to more heat, and the service life of the coil is not prolonged.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects and shortcomings in the prior art, the utility model aims to provide a magnetic circuit improved telescopic push rod relay, which reduces the power of an electromagnetic coil by adding a magnet ring and avoids the electromagnetic coil from being burnt out due to high-power heating; the small-power electromagnetic coil reduces the volume of the coil, so that the volume of the electromagnet is reduced, the volume of the whole relay is further reduced, and the relay meets the requirement of miniaturization specifications.
In order to achieve the above object, the utility model discloses a magnetic circuit improved telescopic push rod relay, which comprises a movably arranged push rod component and an electromagnet component for driving the push rod component to move; the electromagnet assembly comprises an iron core, an electromagnetic coil sleeved outside the iron core and a magnet ring positioned in the electromagnetic coil; the push rod component is provided with a movable armature, and the iron core is used for attracting the armature to enable the push rod component to move; the magnet ring and the electromagnetic coil are arranged around the armature, and the direction of the magnetic field of the magnet ring is the same as or opposite to the direction of the magnetic field generated after the electromagnetic coil is electrified.
Preferably, the electromagnet assembly includes an insulating frame, the insulating frame has a through hole and a stop ring extending into the through hole, the through hole penetrates through the insulating frame, the iron core is located in one end of the through hole, the armature is movably accommodated in the through hole, the electromagnetic coil is wound around the outside of the insulating frame, the magnet ring is located in the through hole, and the stop ring is used for abutting against the stop magnet ring.
Preferably, the electromagnet assembly further comprises a yoke iron cylinder located in the through hole, the iron core is located in the yoke iron cylinder, the armature is movably contained in the yoke iron cylinder, and the magnet ring is sleeved on the outer side of the yoke iron cylinder.
Preferably, the electromagnet assembly further comprises a positioning cylinder extending into the other end of the through hole, the positioning cylinder is sleeved outside the yoke iron cylinder, and the magnet ring is clamped between the stop ring and the positioning cylinder.
Preferably, the iron core is provided with a through hole penetrating through the iron core, the push rod assembly comprises a rod body connected with the armature, a moving point block arranged on the rod body in a sliding manner, and an elastic sheet for driving the moving point block to reset, the rod body is accommodated in the through hole in a sliding manner, and the armature and the moving point block are respectively positioned at two ends of the rod body; the elastic sheet is provided with a first arm part and a second arm part which are arranged in a crossed mode, and the first arm part and the second arm part act on the rod body and the moving point block respectively.
Preferably, the elastic piece is of an integrated structure, the elastic piece is V-shaped, the first arm portion and the second arm portion are arranged in an intersecting manner, and ends, far away from each other, of the first arm portion and the second arm portion act on the rod body and the moving point block respectively.
Preferably, the first arm portion and the second arm portion have through holes penetrating through the arm portions, the first arm portion and the second arm portion are sleeved outside the rod body, and the rod body is accommodated in the through holes.
Preferably, the rod body is provided with a stop portion, the stop portion and the moving point block are arranged at an interval, the first arm portion and the second arm portion are located between the stop portion and the moving point block, and one sides of the first arm portion and the second arm portion, which are far away from each other, are respectively used for abutting against the stop portion and the moving point block.
Preferably, the rod body is slidably sleeved with an insulating block, the moving point block is embedded in the insulating block, and the first arm and the second arm act on the rod body and the insulating block respectively.
The utility model has the advantages that: the electromagnetic coil is electrified with forward current, the magnetic field of the magnet ring is superposed with the magnetic field generated after the electromagnetic coil is electrified, so that the attraction capacity of the coil is improved, the iron core has large magnetic force to drive the armature to move, and compared with the electromagnetic coil which is singly used, the power of the electromagnetic coil is reduced, and the electromagnetic coil is prevented from being burnt out due to high-power heating; the small-power electromagnetic coil reduces the volume of the coil, so that the volume of the electromagnet is reduced, the volume of the whole relay is further reduced, and the relay meets the requirement of miniaturization specifications.
Drawings
Fig. 1 is a schematic perspective view of the present invention;
FIG. 2 is a schematic view of the exploded structure of the present invention;
fig. 3 is a schematic perspective view of the insulating frame of the present invention.
The reference numerals include:
1-push rod component 2-electromagnet component 3-iron core
4-electromagnetic coil 5-magnet ring 6-armature
7-insulating framework 8-through hole 9-stop ring
11-yoke iron cylinder 12-positioning cylinder 13-elastic sheet
14-moving point block 15-first arm 16-second arm
17-through hole 18-stop part 19-insulating block
111-rod body.
Detailed Description
In order to facilitate understanding of those skilled in the art, the present invention will be further described with reference to the following examples and accompanying drawings, which are not intended to limit the present invention.
Referring to fig. 1 to 3, a magnetic circuit improved telescopic push rod relay of the present invention includes a push rod assembly 1 movably disposed, and an electromagnet assembly 2 for driving the push rod assembly 1 to move; the electromagnet assembly 2 comprises an iron core 3, an electromagnetic coil 4 sleeved outside the iron core 3 and a magnet ring 5 positioned in the electromagnetic coil 4, wherein the magnet ring 5 is made of a permanent magnet, and the magnet ring 5 is in a circular ring shape; the push rod component 1 is provided with an armature 6 which is movably arranged, and the iron core 3 is used for attracting the armature 6 to enable the push rod component 1 to move; the magnet ring 5 and the electromagnetic coil 4 are arranged around the armature 6, the inner diameter of the magnet ring 5 is larger than the outer diameter of the armature 6, the inner diameter of the electromagnetic coil 4 is larger than the outer diameter of the magnet ring 5, and the direction of the magnetic field of the magnet ring 5 is the same as or opposite to that of the magnetic field generated after the electromagnetic coil 4 is electrified.
In the using process of the relay, forward current is conducted to the electromagnetic coil 4, the magnetic field of the magnet ring 5 is superposed with the magnetic field generated after the electromagnetic coil 4 is electrified, and the attraction capacity of the coil is improved, so that the iron core 3 has large magnetic force to drive the armature 6 to move, compared with the situation that the electromagnetic coil 4 is used alone, the power of the electromagnetic coil 4 is reduced, and the electromagnetic coil 4 is prevented from being burnt out due to high-power heating; the small-power electromagnetic coil 4 reduces the volume of the coil, so that the volume of the electromagnet is reduced, the volume of the whole relay is further reduced, and the relay meets the requirement of miniaturization specifications. When reverse current is conducted to the electromagnetic coil 4, the magnetic field of the magnet ring 5 is offset with the magnetic field generated after the electromagnetic coil 4 is electrified, the reset mechanism configured by the relay easily drives the push rod assembly 1 to reset, and the magnetic interference of the magnet ring 5 on the normal reset of the push rod assembly 1 is avoided.
The electromagnet assembly 2 comprises an insulating framework 7, the insulating framework 7 is made of insulating plastics, a through hole 8 and a stop ring 9 extending into the through hole 8 are formed in the insulating framework 7, the through hole 8 penetrates through the insulating framework 7, the stop ring 9 is approximately annular, the stop ring 9 is formed by protruding from the inner hole wall of the through hole 8, an iron core 3 extends into one end of the through hole 8 in a protruding mode, an armature 6 is movably contained in the through hole 8, the electromagnetic coil 4 is wound on the outer side of the insulating framework 7, the magnet ring 5 is located in the through hole 8, and the stop ring 9 is used for abutting against the stop magnet ring 5. The magnet ring 5 is positioned by the abutting and stopping of the stopping ring 9 against the magnet ring 5, so that the magnet ring 5 is ensured to be quickly and accurately installed at a required correct position, and the influence on use caused by poor installation of the magnet ring 5 is avoided.
The electromagnet assembly 2 further comprises a yoke iron cylinder 11 located in the through hole 8, the yoke iron cylinder 11 is approximately a hollow cylinder, the yoke iron cylinder 11 is provided with a blind hole which is formed by the concave arrangement of the end face of one end of the yoke iron cylinder 11, the iron core 3 is located in the blind hole of the yoke iron cylinder 11, the armature 6 is movably accommodated in the blind hole of the yoke iron cylinder 11, the iron core 3 is used for blocking an opening of the blind hole of the yoke iron cylinder 11, the magnet ring 5 is sleeved on the outer side of the yoke iron cylinder 11, and the magnet ring 5 is limited by the yoke iron cylinder 11.
The electromagnet assembly 2 further comprises a positioning cylinder 12 extending into the other end of the through hole 8, the positioning cylinder 12 is a substantially hollow cylinder, the positioning cylinder 12 is sleeved outside the yoke iron cylinder 11, and the magnet ring 5 is clamped between the stop ring 9 and the positioning cylinder 12. The cooperation of the yoke iron tube 11, the stop ring 9 and the positioning tube 12 ensures the stable positioning of the magnet ring 5 at the required predetermined position, and avoids the magnet ring 5 from being used badly due to the position change.
The iron core 3 is provided with a through hole penetrating through the iron core 3, the push rod assembly 1 comprises a rod body 111 connected with the armature 6, a moving point block 14 arranged on the rod body 111 in a sliding mode, and an elastic sheet 13 used for driving the moving point block 14 to reset, the rod body 111 is roughly a straight strip-shaped cylinder, the moving point block 14 is roughly a rectangular flat plate, the elastic sheet 13 is made of a metal material, the rod body 111 is arranged in the through hole in a sliding mode, and the armature 6 and the moving point block 14 are respectively located at the left end and the right end of the rod body 111.
The elastic piece 13 has a first arm portion 15 and a second arm portion 16 arranged to intersect each other, the arm portions are substantially straight flat plates, and the first arm portion 15 and the second arm portion 16 act on the rod 111 and the moving point block 14, respectively. When the magnetic force generated by the superposition of the magnetic field of the magnet ring 5 and the magnetic field generated by the electromagnetic coil 4 after being electrified is applied to the moving point block 14, so that the moving point block 14 slides relative to the rod body 111, the moving point block 14 extrudes the elastic sheet 13, so that the elastic sheet 13 generates elastic deformation, and after the magnetic force is cancelled, the elastic sheet 13 drives the moving point block 14 to recover the original position under the action of the elastic restoring force.
Utilize flexure strip 13 to replace the spring that is used for driving moving point piece 14 and resets among the prior art, compare in the spring that drives moving point piece 14 and reset among the prior art, flexure strip 13 can provide suitable elasticity that resets for moving point piece 14 in very little spatial distance, reduces push rod assembly 1's height, and then reduces the height of whole relay for the relay accords with miniaturized specification requirement.
The elastic piece 13 is of an integral structure, the elastic piece 13 is formed by stamping and bending a metal sheet, the elastic piece 13 is of a V shape, a first arm portion 15 and a second arm portion 16 are arranged in an intersecting manner, and ends, away from each other, of the first arm portion 15 and the second arm portion 16 respectively act on the rod body 111 and the moving point block 14. When the moving point block 14 slides relative to the rod 111, the moving point block 14 presses the elastic piece 13 to make the first arm portion 15 and the second arm portion 16 approach each other, so that the elastic piece 13 is elastically deformed to have elastic potential energy.
The first arm portion 15 and the second arm portion 16 both have through holes 17 penetrating through the arm portions, the first arm portion 15 and the second arm portion 16 are respectively sleeved on the outer sides of the rod body 111, and the rod body 111 is accommodated in the through holes 17. Through the arrangement of the through hole 17, the first arm portion 15 and the second arm portion 16 are directly sleeved on the outer side of the rod body 111, so that the assembly of the elastic sheet 13 and the rod body 111 can be completed, the elastic sheet 13 and the rod body 111 are not required to be fixedly connected, and the assembly efficiency of the elastic sheet 13 and the rod body 111 is improved. The rod 111 is engaged with the through hole 17 to firmly limit the elastic sheet 13 on the rod 111, so as to prevent the elastic sheet 13 and the rod 111 from being separated from each other.
The rod 111 is provided with a stop portion 18, the stop portion 18 and the moving point block 14 are arranged at intervals, the stop portion 18 is substantially annular, the stop portion 18 is arranged around the central axis of the rod 111, the first arm portion 15 and the second arm portion 16 are both located between the stop portion 18 and the moving point block 14, and the sides, away from each other, of the first arm portion 15 and the second arm portion 16 are respectively used for abutting against the stop portion 18 and the moving point block 14. When the moving point block 14 slides relative to the rod body 111 to compress the elastic piece 13, the stop portion 18 is abutted against the arm portion to prevent the elastic piece 13 from sliding relative to the rod body 111 and being unable to deform elastically.
An insulating block 19 is slidably sleeved outside the rod body 111, the moving point block 14 is embedded and molded (also called injection molding) on the insulating block 19, and the first arm part 15 and the second arm part 16 respectively act on the rod body 111 and the insulating block 19. The insulation block 19 and the moving point block 14 are firmly connected, and the relative movement between the two is prevented from affecting the normal use of the push rod assembly 1.
The above description is only for the preferred embodiment of the present invention, and for those skilled in the art, there are variations on the detailed description and the application scope according to the idea of the present invention, and the content of the description should not be construed as a limitation to the present invention.
Claims (9)
1. A magnetic circuit improved telescopic push rod relay comprises a push rod assembly and an electromagnet assembly, wherein the push rod assembly is movably arranged, and the electromagnet assembly is used for driving the push rod assembly to move; the method is characterized in that: the electromagnet assembly comprises an iron core, an electromagnetic coil sleeved outside the iron core and a magnet ring positioned in the electromagnetic coil; the push rod component is provided with a movable armature, and the iron core is used for attracting the armature to enable the push rod component to move; the magnet ring and the electromagnetic coil are arranged around the armature, and the direction of the magnetic field of the magnet ring is the same as or opposite to the direction of the magnetic field generated after the electromagnetic coil is electrified.
2. The magnetic circuit improved telescopic push rod relay according to claim 1, wherein: the electromagnet assembly comprises an insulating framework, the insulating framework is provided with a through hole and a stop ring extending into the through hole, the through hole penetrates through the insulating framework, the iron core is located in one end of the through hole, the armature is movably contained in the through hole, the electromagnetic coil is wound on the outer side of the insulating framework, the magnet ring is located in the through hole, and the stop ring is used for abutting against the stop magnet ring.
3. The magnetic circuit improved telescopic push rod relay according to claim 2, wherein: the electromagnet assembly further comprises a yoke iron cylinder positioned in the through hole, the iron core is positioned in the yoke iron cylinder, the armature is movably accommodated in the yoke iron cylinder, and the magnet ring is sleeved on the outer side of the yoke iron cylinder.
4. The magnetic circuit improved telescopic push rod relay according to claim 3, wherein: the electromagnet assembly further comprises a positioning cylinder extending into the other end of the through hole, the positioning cylinder is sleeved on the outer side of the yoke iron cylinder, and the magnet ring is clamped between the stop ring and the positioning cylinder.
5. The magnetic circuit improved telescopic push rod relay according to claim 1, wherein: the push rod assembly comprises a rod body connected with the armature, a moving point block arranged on the rod body in a sliding mode and an elastic sheet used for driving the moving point block to reset, the rod body is accommodated in the through hole in a sliding mode, and the armature and the moving point block are located at two ends of the rod body respectively; the elastic sheet is provided with a first arm part and a second arm part which are arranged in a crossed mode, and the first arm part and the second arm part act on the rod body and the moving point block respectively.
6. The magnetic circuit improved telescopic push rod relay according to claim 5, wherein: the elastic piece is of an integrated structure, the elastic piece is V-shaped, the first arm part and the second arm part are arranged in an intersecting mode, and one ends, far away from each other, of the first arm part and the second arm part act on the rod body and the moving point block respectively.
7. The magnetic circuit improved telescopic push rod relay according to claim 5, wherein: the first arm part and the second arm part are provided with through holes penetrating through the arm parts, the outer sides of the rod bodies are sleeved with the first arm part and the second arm part, and the rod bodies are accommodated in the through holes.
8. The magnetic circuit improved telescopic push rod relay according to claim 5, wherein: the rod body is provided with a stopping part, the stopping part and the moving point block are arranged at intervals, the first arm part and the second arm part are located between the stopping part and the moving point block, and one sides, far away from each other, of the first arm part and the second arm part are used for respectively abutting against the stopping part and the moving point block.
9. The magnetic circuit improved telescopic push rod relay according to claim 5, wherein: the outside slip cover of the body of rod is equipped with the insulating block, and the movable point piece is inlayed and is buried the shaping in the insulating block, and first arm, second arm act on the body of rod and insulating block respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921842343.7U CN210984637U (en) | 2019-10-29 | 2019-10-29 | Magnetic circuit improved telescopic push rod relay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921842343.7U CN210984637U (en) | 2019-10-29 | 2019-10-29 | Magnetic circuit improved telescopic push rod relay |
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| Publication Number | Publication Date |
|---|---|
| CN210984637U true CN210984637U (en) | 2020-07-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921842343.7U Active CN210984637U (en) | 2019-10-29 | 2019-10-29 | Magnetic circuit improved telescopic push rod relay |
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| CN (1) | CN210984637U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112670127A (en) * | 2020-12-31 | 2021-04-16 | 华中科技大学 | Linear electromagnetic relay suitable for magnetic field environment |
-
2019
- 2019-10-29 CN CN201921842343.7U patent/CN210984637U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112670127A (en) * | 2020-12-31 | 2021-04-16 | 华中科技大学 | Linear electromagnetic relay suitable for magnetic field environment |
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