CN108962689B - Movable contact spring capable of improving anti-adhesion capability and breaking force and electromagnetic relay thereof - Google Patents
Movable contact spring capable of improving anti-adhesion capability and breaking force and electromagnetic relay thereof Download PDFInfo
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- CN108962689B CN108962689B CN201710562236.8A CN201710562236A CN108962689B CN 108962689 B CN108962689 B CN 108962689B CN 201710562236 A CN201710562236 A CN 201710562236A CN 108962689 B CN108962689 B CN 108962689B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/64—Driving arrangements between movable part of magnetic circuit and contact
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Abstract
The invention discloses a movable reed capable of improving anti-adhesion capability and breaking force and an electromagnetic relay thereof, wherein the movable reed comprises a sheet-shaped reed; the reed is provided with a root part which is used for being fixed with a base of the relay, a leading-out pin below the root part and a main sheet body above the root part; a movable contact mounting part is arranged at the upper end of one surface of the main sheet body; two sides of the other surface of the main sheet body, which correspond to the movable contact mounting parts, are respectively provided with a contact part which is used for being matched with a push card of the relay; a strip slit extending inwards from the side end edge and winding to the lower side of the movable contact mounting part is arranged on the upper side of one contact part; a backup plate is arranged on the back surface of one contact part, and extends upwards to cross the strip gap to lean against the main sheet body part on the upper side of the strip gap. The invention can improve the anti-blocking capability between the contacts of the relay and the breaking force of the movable reed, thereby effectively ensuring the service performance of the relay.
Description
Technical Field
The invention relates to the technical field of relays, in particular to a movable reed capable of improving anti-adhesion capability and breaking force and an electromagnetic relay thereof.
Background
The relay is a switching device which can frequently switch on, bear and switch off normal current and specified overload current. An existing electromagnetic relay uses a coil to flow current to generate a magnetic field, so that a contact is closed, and an electric appliance for controlling a load is achieved. The device is widely applied to the fields of electric power, power distribution, electricity utilization and the like. The basic working principle of the electromagnetic relay is that electric energy is converted into magnetic energy and then into mechanical energy, and the mechanical energy is used for switching on and off a controlled circuit to realize the relay function.
The existing electromagnetic relay generally comprises a base, a magnetic circuit part, a contact part and a pushing mechanism, wherein the pushing mechanism is connected between the magnetic circuit part and the contact part, the contact part comprises a movable spring and a static spring, the movable spring consists of a movable spring and a movable contact, the static spring consists of a static spring and a static contact, the movable spring and the static spring are respectively inserted on the base, the movable contact on the movable spring and the static contact on the static spring are positioned at matched positions, the pushing mechanism generally adopts a pushing card, the pushing card is provided with a pushing arm for being matched with the movable spring, when a coil of the magnetic circuit part works, an armature of the magnetic circuit part acts, the armature drives the pushing card to act, and the pushing card pushes the movable spring to act, so that the movable contact on the movable spring is contacted with the static contact on the static spring, and the contact is closed. The movable reed is characterized in that the root part of the movable reed is fixed on a base, a leading-out pin is arranged below the root part, a movable contact is fixedly connected above the root part, the movable reed deforms by utilizing the pushing action of a pushing card when the movable reed is closed to enable the movable contact to lean against a fixed contact, and the deformed movable reed is restored by utilizing the elastic restoring force of the movable reed to enable the movable contact to leave the fixed contact when the movable reed is opened, but the counter force is quite large when the movable contact is closed, so that the suction counter force is matched, the flexibility of the movable reed needs to be enhanced.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide the movable reed and the electromagnetic relay thereof, which can improve the anti-adhesion capability and the breaking force, and through the structural improvement of the movable reed and the matched part, the reed can be ensured to have enough flexibility, and the anti-adhesion capability between contacts of the relay and the breaking force of the movable reed can be improved, so that the service performance of the relay is effectively ensured.
The technical scheme adopted for solving the technical problems is as follows: a movable reed capable of improving anti-adhesion capability and breaking force comprises a sheet-shaped reed; the reed is provided with a root part which is used for being fixed with a base of the relay, a leading-out pin below the root part and a main sheet body above the root part; the upper end of one surface of the main sheet body is provided with a movable contact mounting part, and two sides of the other surface of the main sheet body, which correspond to the movable contact mounting part, are respectively provided with a contact part used for being matched with a push card of the relay; a strip slit extending inwards from the side end edge and winding to the lower side of the movable contact mounting part is arranged on the upper side of one contact part; a backup plate is arranged on the back surface of one contact part, and extends upwards to cross the strip gap to lean against the main sheet body part on the upper side of the strip gap.
The backup plate is formed by bending a downward extending part of the lower side of one of the contact parts of the main plate body upwards.
The backup plate also extends to the outside of the side and is bent towards the pushing card direction of the relay to form a baffle plate for blocking the pushing card of the relay from moving towards the preset direction.
The middle line of the main sheet body of the reed, which points to the direction of the base, is offset from the middle line of the root of the reed, which points to the direction of the base.
The central line of the lead-out pin of the reed, which points to the direction of the base, is offset from the central line of the root of the reed, which points to the direction of the base, and the central line of the lead-out pin and the central line of the main sheet body are positioned on two sides of the central line of the root.
The lead-out pin is formed by overlapping two or more reeds.
An electromagnetic relay capable of improving anti-adhesion capability and breaking force comprises a base, a movable reed and a pushing card; the movable reed and the pushing card are respectively arranged on the base and are positioned at the matched position; the movable reed is provided with a root part which is used for being fixed with the base, a leading-out pin which is positioned below the root part and a main sheet body which is positioned above the root part; a movable contact mounting part is arranged at the upper end of one surface of the main sheet body, and a first contact part and a second contact part are respectively arranged at two sides of the other surface of the main sheet body, which correspond to the movable contact mounting part; the pushing card is respectively provided with a first contact arm and a second contact arm which are used for pushing the movable reed in a protruding mode, and the first contact arm and the second contact arm are respectively correspondingly matched with the first contact part and the second contact part; a strip slit which extends inwards from the side end edge and winds to the lower side of the movable contact mounting part is arranged on the upper side of the first contact part; a backup plate is provided on the back surface of the first contact portion, and extends upward across the slit to abut against the main sheet body portion on the upper side of the slit.
The backup plate is formed by bending a downward extending part of the lower side of the first contact part of the main plate body upwards.
The backup plate also extends to the outside of the side and is bent towards the direction of the pushing card to form a baffle plate for blocking the pushing card from moving towards the preset direction.
A rotating shaft is arranged at the bottom end of the pushing card, and the plane projection of the axis of the rotating shaft is perpendicular to the projection of the protruding directions of the first contact arm and the second contact arm on the plane; the base is provided with a shaft hole which is used for adapting to the rotating shaft and is approximately along the horizontal direction; the rotating shaft is inserted into the shaft hole to be matched with the shaft hole.
The baffle blocks the pushing card from moving to a preset direction to block the rotating shaft of the pushing card from exiting from the shaft hole.
The peripheral dimension of the outer end of the rotating shaft is smaller than that of the inner end to form a structure with a large outer diameter and a large inner diameter, and the shaft hole is formed into a structure with a large outer diameter and a small inner diameter; when the rotating shaft is matched with the shaft hole, only the outer end and the inner end of the rotating shaft are respectively contacted with the hole wall of the shaft hole, and the middle part of the rotating shaft is not contacted with the hole wall of the shaft hole.
The protruding length of the first contact arm is larger than that of the second contact arm, so that when the movable reed is pushed by the push card to enable the movable contact to be contacted with the movable contact, the part, close to the first contact arm, of the movable contact is firstly contacted with the fixed contact, the part, close to the second contact arm, of the movable contact is lagged and then contacted with the fixed contact, and rolling contact of the movable contact is formed to prevent contact adhesion.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention adopts the structure that the two sides of the other surface of the main sheet body of the movable reed, which correspond to the movable contact mounting part, are respectively provided with a first contact part and a second contact part; a first contact arm and a second contact arm for pushing the movable reed are respectively and convexly arranged on the pushing card, and the first contact arm and the second contact arm are respectively correspondingly matched with the first contact part and the second contact part; a strip slit which extends inwards from the side end edge and winds to the lower side of the movable contact mounting part is arranged on the upper side of the first contact part; a backup plate is provided on the back surface of the first contact portion, and extends upward across the slit to abut against the main sheet body portion on the upper side of the slit. The structure of the invention can utilize the pull-back action of the backup plate to quickly separate the moving contact from the fixed contact in the breaking process of the relay, thereby improving the breaking capacity of the movable reed and the anti-adhesion capacity in the breaking process.
2. The baffle plate is used for preventing the pushing card from moving towards the preset direction because the backup plate also extends towards the lateral outside and is bent towards the pushing card direction. The structure of the invention can utilize the bending connection of the baffle plate and the backup plate to enhance the rigidity of the backup plate and further improve the breaking capacity of the reed; meanwhile, the pushing card can be blocked, and the rotating shaft of the pushing card is prevented from exiting the shaft hole of the base.
3. The invention adopts the structure that the backup plate is formed by bending the downward extending part of the lower side of one of the contact parts of the main sheet body upwards, and the baffle plate is formed by extending the backup plate to the outside and bending the backup plate towards the direction of the pushing card. The structure of the invention has the advantages that the backup plate and the baffle are integrally made of the reeds, the structure is simple, and the manufacturing cost is low.
4. The invention adopts the structure that the protruding length of the first contact arm is larger than that of the second contact arm, so that when the movable reed is pushed by the push card to contact the movable contact, the part of the movable contact close to the first contact arm is firstly contacted with the static contact, and the part of the movable contact close to the second contact arm is lagged and then contacted with the static contact, thereby forming the rolling contact of the movable contact and the static contact, and better preventing the contact adhesion.
The invention is described in further detail below with reference to the drawings and examples; however, the movable reed capable of improving the anti-adhesion capability and the breaking force and the electromagnetic relay thereof are not limited to the embodiment.
Drawings
Fig. 1 is a schematic perspective view of a movable contact spring according to an embodiment of the present invention;
FIG. 2 is a schematic diagram showing the front direction of a movable contact spring according to the present invention;
fig. 3 is a schematic view of the back surface direction of a movable contact (including a movable contact) of the present invention;
figure 4 is a side view of a movable contact spring of the present invention;
FIG. 5 is a schematic view showing the deployment of the movable contact spring according to the present invention;
fig. 6 is a schematic perspective view of an electromagnetic relay according to an embodiment of the present invention;
fig. 7 is a schematic view of a three-dimensional structure (inverted side) of an electromagnetic relay according to an embodiment of the present invention;
fig. 8 is a schematic perspective view of a pusher card of an electromagnetic relay of the present invention;
fig. 9 is a top view of a pusher card of an electromagnetic relay of the present invention;
fig. 10 is a schematic perspective view of the base of the electromagnetic relay of the embodiment of the present invention;
fig. 11 is a sectional view of a shaft hole portion of a base of an electromagnetic relay of the embodiment of the present invention;
fig. 12 is a schematic diagram of the cooperation of the static spring, the moving spring and the pushing card of the electromagnetic relay according to the embodiment of the invention;
fig. 13 is a top plan view showing the cooperation of the fixed spring, the movable spring and the push card of the electromagnetic relay according to the embodiment of the invention.
Detailed Description
Examples
Referring to fig. 1 to 5, a movable reed capable of improving anti-blocking capability and breaking force according to the present invention comprises a reed 1 in a sheet shape; the reed is provided with a root 11 which is used for being fixed with a base of the relay, a leading-out pin 12 which is positioned below the root and a main sheet body 13 which is positioned above the root; a movable contact mounting portion 131 is provided at an upper end of one surface of the main sheet body 13, and in this embodiment, the movable contact mounting portion 131 is a through hole for mounting the movable contact 14 by riveting; two sides of the other surface of the main sheet body 13, which correspond to the movable contact mounting part 131, are respectively provided with a contact part 132 and a contact part 133 which are used for being matched with a push card of the relay; a slit 134 extending inward from the side end edge and wound to the lower side of the movable contact mounting portion 131 is provided on the upper side of one of the contact portions 132; a back plate 135 is provided on the back surface of one of the contact portions 132, and the back plate 135 extends upward across the slit 134 to abut against a main plate portion 136 on the upper side of the slit.
In this embodiment, as shown in fig. 5, the backup plate 135 is formed by bending a downward extending portion of the lower side of the one contact portion 132 of the main plate 13 upward.
In this embodiment, as shown in fig. 5, the backup plate 135 further extends to the outside and is bent toward the pushing card of the relay to form a baffle 137 for blocking the pushing card of the relay from moving toward the preset direction. The preset direction is the opposite direction (i.e. the exit direction) of the push card into the base.
In this embodiment, the middle line of the main sheet 13 of the reed pointing to the base direction is offset from the middle line of the root 11 of the reed pointing to the base direction.
In this embodiment, the center line of the lead-out leg 12 of the reed pointing to the base direction is offset from the center line of the root 11 of the reed pointing to the base direction, and the center line of the lead-out leg 12 and the center line of the main sheet 13 are located at two sides of the center line of the root.
In this embodiment, as shown in fig. 5, the lead-out pin 12 is formed by laminating two leaf spring pieces.
Referring to fig. 1 to 13, an electromagnetic relay of the present invention, which can improve anti-blocking ability and breaking force, includes a base 2, a magnetic circuit portion 5, a contact portion, and a push card 3; the magnetic circuit part 5 and the contact part are respectively arranged on the base 2, and the pushing card 3 is of a sheet structure and is arranged between the magnetic circuit part 5 and the contact part; the contact part comprises a movable spring part and a static spring part, wherein the movable spring part consists of a movable reed 1 and a movable contact 14, and the static spring part consists of a static reed 4 and a static contact 41; the movable reed 1, the static reed 4 and the pushing card 3 are respectively arranged on the base 2 and are positioned at mutually matched positions; the movable reed 1 is provided with a root 11 which is used for being fixed with the base 2, a leading-out pin 12 which is arranged below the root and a main sheet body 13 which is arranged above the root; a movable contact mounting part 131 is arranged at the upper end of one surface of the main sheet body 13, and a first contact part 132 and a second contact part 133 are respectively arranged at two sides of the other surface of the main sheet body 13, which correspond to the movable contact mounting part 131; the pushing card 3 is respectively provided with a first contact arm 31 and a second contact arm 32 which are used for pushing the movable reed in a protruding mode, and the first contact arm 31 and the second contact arm 32 are respectively correspondingly matched with a first contact part 132 and a second contact part 133; a slit 134 extending inward from the side end edge and wound to the lower side of the movable contact mounting portion is provided on the upper side of the first contact portion 132; a backup plate 135 is provided on the back surface of the first contact portion 132, and the backup plate 135 extends upward across the slit to abut against the main sheet portion 136 on the upper side of the slit.
In this embodiment, the backup plate 135 is formed by bending a downward extending portion of the lower side of the first contact portion 132 of the main plate 13 upward.
In this embodiment, the backup plate 135 further extends laterally outward and is bent toward the push card 3 to form a baffle 137 for blocking the push card from moving toward a predetermined direction.
In this embodiment, the push card 3 is provided with a third contact arm 34 on the side facing away from the first contact arm 31 and the second contact arm 32 for cooperation with the armature 51 of the magnetic circuit part.
In this embodiment, a rotating shaft 33 is disposed at the bottom end of the push card 3, and the plane projection of the axis of the rotating shaft 33 is perpendicular to the projection of the protruding directions of the first contact arm 31 and the second contact arm 32 on the plane; the base 2 is provided with a shaft hole 21 along the horizontal direction for adapting the rotation shaft; the rotating shaft 33 is inserted into the shaft hole 21 to be matched with the shaft hole 21.
In this embodiment, the blocking plate 137 blocks the push card from moving in a preset direction to block the direction in which the rotating shaft 33 of the push card 3 is withdrawn from the shaft hole 21.
Referring to fig. 8 and 11, in the present embodiment, the peripheral dimension of the outer end 331 of the rotating shaft is smaller than the peripheral dimension of the inner end 332 to form a structure with a smaller outside and a larger inside, and the shaft hole 21 is configured to have a structure with a larger outside and a smaller inside, that is, the inner section 211 is smaller than the outer section 212; when the rotating shaft 33 is matched with the shaft hole 21, only the outer end 331 and the inner end 332 of the rotating shaft are respectively contacted with the wall of the shaft hole, and the middle part of the rotating shaft 33 is not contacted with the wall of the shaft hole 21.
Referring to fig. 9 and 13, in this embodiment, the protruding length of the first contact arm 31 is greater than that of the second contact arm 32, and therefore, since the protruding length of the first contact arm 31 is longer, the first contact arm 31 pushes the movable reed 1 to move, and the second contact arm 32 pushes the movable reed 1 to move, so that when the push card 3 pushes the movable reed 1 to make contact with the movable contact, a portion of the movable contact 14 close to the first contact arm 31 will contact with the stationary contact 41 of the stationary spring 4 first, and a portion of the movable contact 14 close to the second contact arm 32 will lag and contact with the stationary contact 41, so as to form rolling contact between the movable contact and the stationary contact, so as to prevent contact adhesion.
The invention relates to a movable reed capable of improving anti-adhesion capability and breaking force and an electromagnetic relay thereof, wherein a first contact part 132 and a second contact part 133 are respectively arranged on two sides of the other surface of a main sheet body 13 of the movable reed 1, which correspond to a movable contact mounting part 131; a first contact arm 31 and a second contact arm 32 for pushing the movable reed are respectively and convexly arranged on the pushing card 3, and the first contact arm 31 and the second contact arm 32 are respectively correspondingly matched with a first contact part 132 and a second contact part 133; a slit 134 extending inward from the side end edge and wound to the lower side of the movable contact mounting portion is provided on the upper side of the first contact portion 132; a back plate 135 is provided at the back of the first contact portion, and the back plate 135 extends upward across the slit to abut against the main sheet portion 136 at the upper side of the slit. The structure of the invention can utilize the pull-back action of the backup plate 135 to quickly separate the moving contact from the fixed contact in the breaking process of the relay, thereby improving the breaking capacity of the movable reed and the anti-sticking capacity in the breaking process.
The movable reed and the electromagnetic relay thereof which can improve the anti-adhesion capability and the breaking force adopt the baffle 137 which is formed by bending the backup plate 135 towards the direction of the pushing card and also extends towards the lateral outside and is used for blocking the pushing card from moving towards the preset direction. The structure of the invention can utilize the bending connection of the baffle 137 and the backup plate 135 to strengthen the rigidity of the backup plate and further improve the breaking capacity of the reed; meanwhile, the pushing card can be blocked, and the rotating shaft of the pushing card is prevented from exiting the shaft hole of the base. The invention adopts that the backup plate 135 is formed by bending the downward extending part of the lower side of one contact part of the main sheet body upwards, and the baffle 137 is formed by extending the backup plate to the outside and bending the backup plate towards the direction of the pushing card. The structure of the invention has the advantages that the backup plate and the baffle are integrally made of the reeds, the structure is simple, and the manufacturing cost is low.
According to the movable reed and the electromagnetic relay thereof capable of improving anti-blocking capability and breaking force, the protruding length of the first contact arm 31 is larger than that of the second contact arm 32, so that when the movable reed is pushed by the push card to enable the movable reed to be contacted with the movable contact, the part, close to the first contact arm, of the movable contact 14 is firstly contacted with the fixed contact 41, and the part, close to the second contact arm, of the movable contact 14 is lagged and then contacted with the fixed contact 41, and therefore rolling contact of the movable contact and the movable contact are formed, and contact blocking can be well prevented.
The foregoing is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. While the invention has been described with reference to preferred embodiments, it is not intended to be limiting. Many possible variations and modifications of the disclosed technology can be made by anyone skilled in the art, or be modified to equivalent embodiments, without departing from the scope of the technology. Therefore, any simple modification, equivalent variation and modification of the above embodiments according to the technical substance of the present invention shall fall within the scope of the technical solution of the present invention.
Claims (13)
1. A movable reed capable of improving anti-adhesion capability and breaking force comprises a sheet-shaped reed; the reed is provided with a root part which is used for being fixed with a base of the relay, a leading-out pin below the root part and a main sheet body above the root part; a movable contact mounting part is arranged at the upper end of one surface of the main sheet body; the method is characterized in that: two sides of the other surface of the main sheet body, which correspond to the movable contact mounting parts, are respectively provided with a contact part which is used for being matched with a push card of the relay; a strip slit extending inwards from the side end edge and winding to the lower side of the movable contact mounting part is arranged on the upper side of one contact part; a backup plate is arranged on the back surface of one contact part, and extends upwards to cross the strip gap to lean against the main sheet body part on the upper side of the strip gap.
2. The movable reed capable of improving anti-adhesion capability and breaking force according to claim 1, characterized in that: the backup plate is formed by bending a downward extending part of the lower side of one of the contact parts of the main plate body upwards.
3. The movable reed capable of improving anti-adhesion capability and breaking force according to claim 2, characterized in that: the backup plate also extends to the outside of the side and is bent towards the pushing card direction of the relay to form a baffle plate for blocking the pushing card of the relay from moving towards the preset direction.
4. The movable reed capable of improving anti-adhesion capability and breaking force according to claim 1, characterized in that: the middle line of the main sheet body of the reed, which points to the direction of the base, is offset from the middle line of the root of the reed, which points to the direction of the base.
5. The movable reed capable of improving anti-adhesion capability and breaking force according to claim 4, wherein: the central line of the lead-out pin of the reed, which points to the direction of the base, is offset from the central line of the root of the reed, which points to the direction of the base, and the central line of the lead-out pin and the central line of the main sheet body are positioned on two sides of the central line of the root.
6. The movable reed capable of improving anti-adhesion capability and breaking force according to claim 1, characterized in that: the lead-out pin is formed by overlapping two or more reeds.
7. An electromagnetic relay capable of improving anti-adhesion capability and breaking force comprises a base, a movable reed and a pushing card; the movable reed and the pushing card are respectively arranged on the base and are positioned at the matched position; the movable reed is provided with a root part which is used for being fixed with the base, a leading-out pin which is positioned below the root part and a main sheet body which is positioned above the root part; a movable contact mounting part is arranged at the upper end of one surface of the main sheet body; the method is characterized in that: a first contact part and a second contact part are respectively arranged on two sides of the other surface of the main sheet body, which correspond to the movable contact mounting part; the pushing card is respectively provided with a first contact arm and a second contact arm which are used for pushing the movable reed in a protruding mode, and the first contact arm and the second contact arm are respectively correspondingly matched with the first contact part and the second contact part; a strip slit which extends inwards from the side end edge and winds to the lower side of the movable contact mounting part is arranged on the upper side of the first contact part; a backup plate is provided on the back surface of the first contact portion, and extends upward across the slit to abut against the main sheet body portion on the upper side of the slit.
8. The electromagnetic relay according to claim 7, wherein the anti-blocking capability and breaking force are improved: the backup plate is formed by bending a downward extending part of the lower side of the first contact part of the main plate body upwards.
9. The electromagnetic relay according to claim 8, wherein the anti-blocking capability and breaking force are improved: the backup plate also extends to the outside of the side and is bent towards the direction of the pushing card to form a baffle plate for blocking the pushing card from moving towards the preset direction.
10. The electromagnetic relay according to claim 9, wherein the anti-blocking capability and breaking force are improved, wherein: a rotating shaft is arranged at the bottom end of the pushing card, and the plane projection of the axis of the rotating shaft is perpendicular to the projection of the protruding directions of the first contact arm and the second contact arm on the plane; the base is provided with a shaft hole which is used for adapting to the rotating shaft and is approximately along the horizontal direction; the rotating shaft is inserted into the shaft hole to be matched with the shaft hole.
11. The electromagnetic relay according to claim 10, wherein the anti-blocking capability and breaking force are improved, wherein: the baffle blocks the pushing card from moving to a preset direction to block the rotating shaft of the pushing card from exiting from the shaft hole.
12. The electromagnetic relay according to claim 10, wherein the anti-blocking capability and breaking force are improved, wherein: the peripheral dimension of the outer end of the rotating shaft is smaller than that of the inner end to form a structure with a large outer diameter and a large inner diameter, and the shaft hole is formed into a structure with a large outer diameter and a small inner diameter; when the rotating shaft is matched with the shaft hole, only the outer end and the inner end of the rotating shaft are respectively contacted with the hole wall of the shaft hole, and the middle part of the rotating shaft is not contacted with the hole wall of the shaft hole.
13. The electromagnetic relay according to claim 10, wherein the anti-blocking capability and breaking force are improved, wherein: the protruding length of the first contact arm is larger than that of the second contact arm, so that when the movable reed is pushed by the push card to enable the movable contact to be contacted with the movable contact, the part, close to the first contact arm, of the movable contact is firstly contacted with the fixed contact, the part, close to the second contact arm, of the movable contact is lagged and then contacted with the fixed contact, and rolling contact of the movable contact is formed to prevent contact adhesion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710562236.8A CN108962689B (en) | 2017-07-11 | 2017-07-11 | Movable contact spring capable of improving anti-adhesion capability and breaking force and electromagnetic relay thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710562236.8A CN108962689B (en) | 2017-07-11 | 2017-07-11 | Movable contact spring capable of improving anti-adhesion capability and breaking force and electromagnetic relay thereof |
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| CN108962689A CN108962689A (en) | 2018-12-07 |
| CN108962689B true CN108962689B (en) | 2023-11-17 |
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| CN207217427U (en) * | 2017-07-11 | 2018-04-10 | 厦门宏发电力电器有限公司 | The movable contact spring and its electromagnetic relay of resist blocking and that ability and disjunction power can be improved |
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| CN108962689A (en) | 2018-12-07 |
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