CN204497154U - A kind of relay pushing mechanism and relay - Google Patents

Abstract

The utility model provides a relay pushing mechanism, which comprises a push rod, a moving contact plate and a moving iron core, and the push rod includes an upper push rod, a lower push rod and an insulating piece arranged between the upper push rod and the lower push rod , the upper push rod and the lower push rod are fixedly connected through the insulator; the moving contact plate is located at the upper end of the upper push rod, and the lower end of the lower push rod is fixedly connected with the moving iron core; the upper push A block is provided on the top of the rod, and the moving contact plate abuts against the lower part of the block; a mounting groove is provided on the top of the upper push rod, and the blocking block is installed in the mounting groove. At the same time, the utility model also provides a relay. The relay driving mechanism provided by the utility model has good insulation between the moving contact plate and the moving iron core, can effectively prevent the conductive coil from being broken down, and has less potential safety hazards.

Description

A kind of relay driving mechanism and relay

technical field

The utility model relates to a relay, in particular to a relay pushing mechanism and a relay containing the relay pushing mechanism.

Background technique

The power relay is a high-voltage and high-power power breaking device. The low-voltage coil flows through the current to generate electromagnetic force. The moving iron core drives the push rod to make the moving contact plate and the static contact contact. High-voltage connection, after the low-voltage coil is powered off, push The rod drives the movable contact plate to disconnect from the static contact under the reaction force of the reset elastic member, and through the frequent above-mentioned movement process, the frequent on-off control of the circuit is realized. The relay is widely used in electric vehicles, solar power generation, energy storage power generation, power distribution and power consumption fields.

Fig. 1 is a relay driving mechanism in the prior art. When the moving iron core 30 drives the pushing rod 10 to make the moving contact plate 20 contact with the static contact 90, since the pushing rod 10 adopts an integral structure of metal material, the high voltage will flow along the pushing rod. 10 Conducted to other metal parts such as the moving iron core 30 of the relay, so that the metal parts of the relay are charged, which greatly reduces the creepage distance between the high voltage and the low voltage, and the relay has poor insulation and withstand voltage performance, which is more likely to cause the coil to be broken down , damage the relay and the equipment using the relay, there is a big safety hazard.

Contents of the invention

The utility model aims to solve the above technical problems, and provides a relay with good insulation between the moving contact plate and the moving iron core, which can effectively prevent the conductive coil from being broken down and has less potential safety hazards.

In order to solve the above technical problems, the utility model provides a relay pushing mechanism, which includes a pushing rod, a moving contact plate and a moving iron core. The pushing rod includes an upper pushing rod, a lower pushing rod and a Insulators between the rods, the upper push rod and the lower push rod are fixedly connected through the insulator; the moving contact plate is located at the upper end of the upper push rod, and the lower end of the lower push rod is fixed to the moving iron core connection; the top of the upper push rod is provided with a block, and the moving contact plate is against the lower part of the block; the top of the upper push rod is provided with a mounting groove, and the block is installed on the installation in the slot.

In the relay pushing mechanism provided by the utility model, the push rod is made into a split type, that is, an upper push rod and a lower push rod, and an insulating part is arranged between the upper push rod and the lower push rod, and the upper push rod and the lower push rod The insulation between them effectively prevents the high voltage from being transmitted to the moving iron core of the relay along the push rod; during the use of the relay, other metal parts below the lower push rod on the relay are in good contact with the upper push rod The rod and the high voltage are insulated to prevent the possibility of the conductive coil being broken down by the high voltage, and to ensure the safe use of the relay and the equipment using the relay.

Preferably, a gasket is provided between the clamping block and the moving contact plate.

Further, the relay pushing mechanism further includes a buffer elastic member, which is in a compressed state and bears against the lower part of the moving contact plate, and pushes the moving contact plate against the lower part of the clamping block through elastic force.

Preferably, one end of the buffering elastic member abuts against the lower part of the moving contact plate, and the other end abuts against the insulating member.

Preferably, the upper part of the insulating member is provided with an elastic member installation portion, and the other end of the buffer elastic member abuts against the elastic member installation portion.

Further, a clip spring is provided on the upper push rod, one end of the buffer elastic member is against the lower part of the moving contact plate, and the other end is against the upper end of the clip spring.

Preferably, a washer is provided at the upper end of the snap spring, and the other end of the upper push rod is abutted against the washer.

Further, the moving iron core is provided with a restoring elastic member for providing restoring elastic force for the moving iron core, and the restoring elastic member bears against the moving iron core.

Preferably, the insulator is a ceramic insulator.

Preferably, the insulator is fixedly connected to the upper push rod and the lower push rod through injection molding, inlaying or welding.

Preferably, the insulating member is any one of cylinder, tapered column, square column or polygonal column.

Preferably, the insulating member has a hollow structure inside.

Further, the upper end of the insulator is provided with a first counterbore, and the lower end of the upper push rod is fitly connected in the first counterbore.

Further, the lower end of the upper push rod is provided with a first step, and the first step fits on the upper end surface of the insulator.

Further, the lower end of the insulator is provided with a second counterbore, and the upper end of the lower push rod is fitly connected in the second counterbore.

Further, the upper end of the lower push rod is provided with a second step, and the second step fits on the lower end surface of the insulator.

Further, the lower end of the upper push rod is provided with a third step, and the third step is fitted in the first counterbore.

Further, a first groove is left between the first step and the third step, and a first flange is formed on the outside of the first counterbore, and the first flange is inserted into the first groove .

Further, the upper end of the lower push rod is provided with a fourth step, and the fourth step is fitted in the second counterbore.

Further, a second groove is left between the second step and the fourth step, and a second flange is formed on the outside of the second counterbore, and the second flange is inserted into the second groove .

In addition, the utility model also provides a relay, which includes a housing, a static contact arranged in the housing, a pushing mechanism, and a driving coil, and the driving coil drives the pushing mechanism to reciprocate up and down, so that the pushing The moving contact plate on the mechanism is connected or separated from the static contact; wherein, the pushing mechanism is the relay pushing mechanism provided by the utility model.

Further, a static iron core is fixed inside the driving coil, and a reset elastic member for providing reset elastic force for the movable iron core is arranged on the movable iron core, and one end of the reset elastic member abuts against the movable iron core The upper end and the other end lean against the lower end of the static iron core to provide restoring elastic force for the moving iron core.

The relay provided by the utility model cuts off the conduction path between the high-voltage end and the low-voltage end through the insulator, improves the withstand voltage and insulation performance of the relay, makes the use of the relay safer, and has a simple structure and is convenient for implementation.

Additional aspects and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Description of drawings

The above and/or additional aspects and advantages of the present invention will become apparent and easy to understand from the description of the embodiments in conjunction with the following drawings.

Fig. 1 is a structural schematic diagram of a pushing mechanism in the prior art.

Fig. 2 is a structural schematic diagram of a pushing mechanism of an embodiment of the present invention.

Fig. 3 is a schematic structural view of the upper push rod in one embodiment of the present invention.

Fig. 4 is a schematic structural view of the lower push rod in an embodiment of the present invention.

Fig. 5 is a schematic structural diagram of an insulating member in an embodiment of the present invention.

Fig. 6 is a schematic structural view of the upper push rod in another embodiment of the present invention.

Fig. 7 is a schematic structural view of the lower push rod in another embodiment of the present invention.

Fig. 8 is a schematic structural view of an insulating member in another embodiment of the present invention.

Fig. 9 is a structural schematic diagram of the pushing mechanism of another embodiment of the present invention.

Fig. 10 is a structural schematic diagram of a pushing mechanism of another embodiment of the present invention.

Fig. 11 is a schematic structural diagram of an insulating member according to another embodiment of the present invention.

Fig. 12 is a schematic diagram of cooperation between the pushing mechanism and the static contact in one embodiment of the present invention.

Fig. 13 is a schematic diagram of the overall structure of the relay in an embodiment provided by the present invention.

Reference signs:

10, push rod; 12, upper push rod; 120, first step; 121, first groove; 122, third step; 123, installation groove; 14, lower push rod; 140, second step; 141, The second groove; 142, the fourth step; 16, the insulator; 162, the first counterbore; 163, the first flange; 164, the second counterbore; 165, the second flange; 20, the moving touch plate; 30. Moving iron core; 40. Clamping block; 50. Buffer elastic part; 51. Elastic part installation part; 60. Resetting elastic part; 70. Gasket; ; 101, static iron core.

Detailed ways

Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention, but should not be construed as limiting the present invention.

In the description of the specific implementation of the present invention, it should be understood that the terms "length", "width", "thickness", "upper", "lower", "front", "rear", "left", The orientation or positional relationship indicated by "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the purpose of It is convenient to describe the utility model and simplify the description, but not to indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the utility model. In addition, the terms "first", "second", etc. are used for descriptive purposes only, and should not be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, a feature defined as "first", "second", etc. may expressly or implicitly include one or more of that feature. In the description of the present utility model, "plurality" means two or more, unless otherwise specifically defined.

In this utility model, unless otherwise clearly stipulated and limited, terms such as "installation", "setting", "mating", "connecting", "connecting" and "fixing" should be understood in a broad sense, for example, it can be A fixed connection can also be a detachable connection or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediary, and it can be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present utility model according to specific situations.

The relay pushing mechanism and the relay according to the embodiment of the present utility model will be described in detail below in conjunction with the accompanying drawings.

As shown in Figure 2 or Figure 10 or Figure 12, the utility model provides a relay pushing mechanism, including a push rod 10, a moving contact plate 20 and a moving iron core 30, and the push rod includes an upper push rod 12 and a lower push rod 14 And the insulator 16 that is arranged between the upper push rod 12 and the lower push rod 14, the upper push rod 12 and the lower push rod 14 are fixedly connected by the insulator 16; the moving contact plate 20 is positioned at the upper end of the upper push rod 12, and the lower push rod The lower end of 14 is fixedly connected with moving iron core 30.

In one embodiment, a block 40 is provided on the top of the upper push rod 12 , and the moving contact plate 20 abuts against the lower part of the block 40 . The clamping block 40 can be integrally injection molded with the upper push rod 12 , or can be fixed on the top end of the upper push rod 12 through mechanical connection. Its main function is to limit and install the moving touch panel 20. When the moving touch panel 20 is installed on the upper end of the upper push rod 12, it is guaranteed that the movable touch panel 20 will not escape from the top of the upper push rod 12. At the same time, when the buffer elastic member 50 is installed, a pressure is provided for the buffer elastic member 50 to ensure that the buffer elastic member 50 can be in a compressed state.

As shown in Figure 3, in order to fix the clamping block 40 on the top of the upper push rod 12 by means of mechanical connection, in one embodiment of the present invention, a mounting groove 123 is provided on the top of the upper push rod 12, and the clamping block 40 is installed in the installation groove 123; through the installation groove 123, the clamping block 40 is limited and fixed.

In order to better cooperate with the moving touch panel 20 , as shown in FIG. 2 or FIG. 10 , in an embodiment of the present invention, a gasket 70 is provided between the block 40 and the moving touch panel 20 . The spacer 70 increases the effective contact area between the block 40 and the movable contact plate 20 , preventing unnecessary shaking or swinging of the movable contact plate 20 when pushed against the block 40 .

Furthermore, the relay pushing mechanism provided by the utility model also includes a buffer elastic member 50, which is pressed against the lower part of the moving contact plate 20, and is in a compressed state, and the moving contact plate 20 is pressed against the block by elastic force. 40 or the lower part of spacer 70. When the relay is in operation, the above-mentioned buffer elastic member 50 plays a certain role in promoting the movable contact plate 20, so that the movable contact plate 20 can better contact with the static contact 90 in the relay; The moving touch panel 20 plays a certain buffering role, so as to ensure that the moving touch panel 20 will not cause unnecessary damage to the moving touch panel 20 due to force problems during the process of contacting the moving touch panel 20 with the static contact 90 .

In order to better realize the cooperation between the buffer elastic member 50 and the moving contact plate 20, a slot (not shown) matching the size of the top end of the buffer elastic member 50 can be provided at the bottom of the movable contact plate 20, and the buffer elastic member 50 is placed in the slot; or the buffer elastic member 50 can also be fixedly connected directly to the lower part of the moving contact plate 20, so as to better achieve the effect of fixing and interaction.

In this embodiment and other embodiments below, the buffer elastic member 50 may be a buffer spring commonly used in the field of relays.

In one embodiment, as shown in FIG. 10 or FIG. 12 , one end of the cushioning elastic member 50 abuts against the lower part of the moving touch panel 20 to provide a certain driving force and buffering force for the moving touch panel 20; On the part 16, that is, the buffer elastic part 50 is sandwiched between the moving contact plate 20 and the insulating part 16. The joint action of the insulating part 16 and the moving contact plate 20 makes the buffer elastic part 50 maintain a compressed state to play The function of pushing and cushioning the moving touch panel 20 .

In order to cooperate with the above-mentioned buffer elastic member 50 against the insulating member 16, as shown in Figure 10 and Figure 11, in one embodiment of the present utility model, an elastic member mounting part 51 is arranged on the upper part of the insulating member 16, and the buffer elastic member 50 It just abuts against the elastic member mounting portion 51 . In this embodiment, the elastic member installation portion 51 may be in the shape of a groove or other structural design for easy installation of the buffer elastic member 50 ; wherein, the buffer elastic member 50 may also be directly fixed on the elastic member installation portion 51 .

As shown in Figure 12, in order to further simplify the installation and design difficulty, the diameter of the insulator 16 is preferably greater than the diameter of the upper push rod 12, forming an annular installation platform at the top of the insulator 16; On the ring-shaped installation platform, the step of disposing the elastic member installation portion 51 on the insulating member 16 is omitted.

In another embodiment, as shown in FIG. 2 , the buffer elastic member 50 is not used in conjunction with the insulator 16 , but a snap spring 80 is arranged on the upper push rod 12 , and the buffer elastic member 50 and the snap ring 80 Cooperate to realize its function. In this embodiment, as mentioned above, one end of the buffer elastic member 50 is against the lower part of the moving contact plate 20; at the same time, the other end of the buffer elastic member 50 is no longer against the insulating member 16, and It is against the upper end of jumper 80. In this embodiment, the snap ring 80 can be fixedly connected to the upper push rod 12 by cooperating with the snap ring slot (not shown) provided on the upper push rod 12; it can also be integrated with the upper push rod 12 Injection molding. There is no limitation here, and in the specific implementation process, technicians can choose any one according to the specific situation, or even choose other fixed matching methods, which are all feasible.

In order to make the jumper 80 better cooperate with the buffer elastic member 50, in another embodiment of the present utility model, a gasket 70 is arranged on the upper end of the jumper 80, and the other end of the upper push rod 12 is against the gasket. 70, so that the cooperation between the buffer elastic member 50 and the snap ring 80 is more stable and reliable.

Further, as shown in FIG. 2 or FIG. 10 or FIG. 12 , the relay pushing mechanism provided by the present invention further includes a reset elastic member 60 . In one embodiment, the restoring elastic member 60 is arranged on the moving iron core 30 , and one end is against the upper end of the moving iron core 30 to provide restoring elastic force for the moving iron core 30 . In the relay, one end of the reset elastic member 60 is arranged on the upper end of the moving iron core 30, and the other end is arranged on the static iron core 101 located inside the drive coil 100. An upward magnetic force of the core 30 drives the moving iron core 30 to move upward; at this time, the reset elastic member 60 located at the upper end of the movable iron core 30 will be compressed, and when the reset elastic member 60 is compressed to a certain degree, the reset elastic member 60 will When the elastic force is greater than the magnetic force given by the driving coil 100 , the moving iron core 30 is reset under the elastic force of the reset elastic member 60 and returns to its initial position. Such a circular movement realizes the on-off of the relay. The return elastic member 60 may be a return spring.

In some other embodiments in the field, the return elastic member 60 can also be arranged on the top of the push rod, that is, the top of the upper push rod 12, one end of the return elastic member 60 is against the upper end of the block 40, and the other end By leaning against other structures in the relay, the moving iron core 30 can also be provided with reset power through its reset elastic force.

In all the above embodiments, the insulator 16 can be a ceramic insulator, or an insulator made of other non-conductive materials. The way of fixed connection between the insulating member 16 and the upper push rod 12 and the lower push rod 14 can be injection molding, inlay or welding. Meanwhile, according to specific requirements, the insulating member 16 can be any one of cylinder, tapered column, square column or polygonal column. In order to better match the push rod 10 commonly used in the industry, the insulating member 16 is preferably a cylinder. In addition, in order to reduce the weight of the overall insulator 16, reduce the weight of the driving mechanism, and reduce the requirement for the driving force of the relay, the interior of the insulator 16 can be made into a hollow structure.

In the selection of the material of the insulator 16, it is also possible to select plastics, oxide powder, etc. to be made of insulating and arc-resistant materials, which can fix the upper push rod 12 and the lower push rod 14, and ensure the tightness of the upper push rod 12 and the lower push rod 14. coaxiality, and at the same time, there is a larger distance between the upper push rod 12 and the lower push rod 14. On this basis, the upper push rod 12 or the lower push rod 14 for plastic or powder injection molding can be provided with a trough at a position in contact with the insulator 16, and the injection material is filled in the trough, so that the upper push rod 12 and the The connection between the insulator 16, the lower push rod 14 and the insulator 16 is more firm.

In one embodiment of the present utility model, as shown in FIG. 5 , the upper end of the insulator 16 is provided with a first counterbore 162 , and the lower end of the upper push rod 12 is fitly connected in the first counterbore 162 . In actual production, the inside of the first counterbore 162 and the end surface of the insulator 16 are plated with a nickel layer of 3-5 um. In fact, the above-mentioned first counterbore 162 is a groove opened on the upper end of the insulator 16, which is used to insert the lower end of the upper push rod 12 into the groove when it is connected with the upper push rod 12, that is, Insert into the first counterbore 162, and then connect and fix between the two.

On the basis of the above embodiments, as shown in FIG. 3 , the lower end of the upper push rod 12 is provided with a first step 120 , and the first step 120 fits on the upper end surface of the insulator 16 . That is, a T-shaped connection structure is formed at the lower end of the upper push rod 12, the vertical section of the connection structure is inserted into the first counterbore 162, and the first horizontal step 120 rests on the upper end surface of the insulator 16 and is located at the first the periphery of the counterbore 162 .

In another embodiment of the present utility model, as shown in FIG. 5 , the lower end of the insulator is provided with a second counterbore 164 , and the upper end of the lower push rod 14 is fitly connected in the second counterbore 164 . In actual production, the end surfaces of the second counterbore 164 and the insulator 16 are plated with a nickel layer of 3-5 um. In fact, the above-mentioned second counterbore 164 is a groove opened at the lower end of the insulator 16, which is used to insert the lower end of the lower push rod 14 into the groove when it is connected with the lower push rod 14, that is, to insert In the second counterbore 164, the connection and fixation between the two are performed.

On the basis of the above embodiments, as shown in FIG. 4 , the upper end of the lower push rod 14 is provided with a second step 140 , and the second step 140 fits on the lower end surface of the insulator 16 . That is, an inverted T-shaped connection structure is formed on the upper end of the lower push rod 14, the vertical section of the connection structure is inserted into the second counterbore 164, and the horizontal second step 140 overlaps the lower end surface of the insulating member 16, and is located at the first The periphery of the second counterbore 164 .

In the specific manufacturing process, internal threads can be set in the first counterbore 162 and the second counterbore 164, and external threads can be set at the lower end of the upper push rod 12 and the upper end of the lower push rod 14; The lower end of the lower push rod 14 is fixed in the first counterbore 162 by threaded connection, and the upper end of the lower push rod 14 is fixed in the second counterbore 164 by threaded connection.

In another embodiment of the present utility model, as shown in FIG. 6 , a third step 122 is provided at the lower end of the upper push rod, and the third step 122 is fitted in the first counterbore 162 . The overall structure of the lower end of the upper push rod is a similar I-shaped structure. The upper side of the I-shaped structure, that is, the first step 120, is matched with the upper end surface of the insulating member 16; the lower side of the I-shaped structure, that is, the third step 122, is configured in the first counterbore 162 .

On this basis, a first groove 121 is left between the first step 120 and the third step 122, and a first flange 163 is formed on the outside of the first counterbore 162, as shown in FIG. 8; the first flange 163 is inserted into the first groove 121 . The third step 122 fits in the first counterbore 162, and at the same time, the first flange 163 fits in the groove between the first step 120 and the third step 122 to form a part that engages with each other, so that the upper push Better, stronger connection of rod 12 to insulator 16 .

In another embodiment of the present utility model, same as the upper push rod 12, as shown in FIG. Inside. At the same time, a second groove 141 is left between the second step 140 and the fourth step 142, and a second flange 165 is also formed on the outside of the second counterbore 164, as shown in Figure 8; the second flange 165 is inserted in the second groove 141 .

As shown in Figures 6-9, in one embodiment, the first step 120, the second step 140, the third step 122 and the fourth step 142 are included at the same time, and, between the first step 120 and the third step 122 A first groove 121 is left, a second groove 141 is left between the second step 140 and the fourth step 142, a first flange 163 is formed on the outside of the first counterbore 162, and a first flange 163 is formed on the outside of the second counterbore 164. Two flanging 165. The overall insulator 16 can be regarded as a combination of two E-shaped openings with opposite openings. The horizontal sides of the two ends of the E-shaped are the first flanging 163 and the second flanging 165; and the upper and lower I-shaped structures are The lower end of the upper push rod 12 including the first step 120 and the third step 122 and the upper end of the lower push rod 14 including the second step 140 and the fourth step 142 .

In addition, the utility model also provides a relay, as shown in Figure 13, including a shell, a static contact 90, a push mechanism, and a driving coil 100, etc. Supplied relay drive mechanism. Inside the relay, a static iron core 101 is arranged inside the drive coil 100, and the static iron core 101 is used to support the upper end of the reset elastic member 60 to provide reset elastic force for the moving iron core 30 located below the reset elastic member 60; as shown in the figure As shown in 12, it is a schematic diagram of cooperation between the push mechanism and the static contact 90 provided by the utility model. Under the driving action of the drive coil 100, the push mechanism moves upward, so that the movable contact 20 contacts the static contact 90; when the drive coil When the electromagnetic force provided by 100 is smaller than the reset elastic force provided by the reset elastic member 60 , the driving mechanism resets under the action of the reset elastic member 60 , and the movable contact 20 is separated from the static contact 90 .

In the present utility model, the features in the above-mentioned embodiments can be combined with each other, or can be transformed according to the specific situation, so as to combine into the required relay.

During the specific installation process, the return elastic member 60 is sleeved on the lower push rod 14 and pressed against the moving iron core 30 to provide the required return elastic force for the moving iron core 30 . At the same time, the upper push rod 12 and the lower push rod 14 are respectively fixedly connected to the insulator 16 to form a complete push rod. Put the buffer elastic part 50, the moving contact plate 20, and the gasket 70 (if any) into the upper push rod 12 in sequence, and fix the lower end of the buffer elastic part 50 on the insulating part 16, and finally install the clamping block 40 on the upper push rod 12. Push the top of the rod 12 to complete the complete relay pushing mechanism.

The working principle of the relay shows that when the power is turned on, under the action of the peripheral drive coil 100, an upward electromagnetic force is provided to the moving iron core 30 to drive the moving iron core 30 to move upward; at this time, the reset position on the moving iron core 30 The elastic member 60 is further compressed, and the moving iron core 30 drives the lower push rod 14 , the insulating member 16 and the upper push rod 12 to move upward together. When the movable contact plate 20 touches the static contact 90 , the buffer elastic member 50 is further compressed to play a buffering role, and makes the movable contact plate 20 closely contact with the static contact 90 . When the elastic force of the reset elastic member 60 is greater than the electromagnetic force provided by the driving coil 100 for the moving iron core 30, the pushing mechanism will reset under the elastic force of the reset elastic member 60, so that the moving iron core 30 returns to the initial state, and thus reciprocates, Realize the high-frequency on-off control of the relay to the circuit.

In addition, the specific shape of the insulator 16 can be changed according to the peripheral structure of the relay, so as to be matched and connected in the relay, so as to realize its function and save unnecessary waste of space.

In the description of this specification, descriptions referring to the terms "one embodiment", "some embodiments", "example", "specific examples", or "some examples" mean that specific features described in connection with the embodiment or example , structures, materials or features are included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although the embodiments of the present invention have been shown and described above, it can be understood that the above-mentioned embodiments are exemplary and cannot be construed as limitations of the present invention. The above-mentioned embodiments can be changed, modified, replaced and modified within the scope of the present utility model under the principle and purpose.

Claims (22)

1. A relay pushing mechanism, characterized in that it includes a push rod (10), a moving contact plate (20) and a moving iron core (30), and the push rod (10) includes an upper push rod (12), a lower push rod The rod (14) and the insulating piece (16) arranged between the upper pushing rod (12) and the lower pushing rod (14), the upper pushing rod (12) and the lower pushing rod (14) pass through the insulating piece ( 16) Fixed connection; the moving contact plate (20) is located at the upper end of the upper push rod (12), and the lower end of the lower push rod (14) is fixedly connected with the moving iron core (30); the upper push rod (12) is provided with a block (40) at the top, and the moving contact plate (20) abuts against the lower part of the block (40); the top of the upper push rod (12) is provided with a mounting groove (123 ), the block (40) is installed in the installation groove (123). 2 . The relay pushing mechanism according to claim 1 , characterized in that a gasket ( 70 ) is arranged between the block ( 40 ) and the moving contact plate ( 20 ). 3. The relay pushing mechanism according to claim 1, characterized in that it also includes a buffer elastic member (50), the buffer elastic member (50) is in a compressed state and bears against the lower part of the moving contact plate (20), through The elastic force pushes the moving contact plate (20) against the lower part of the block (40). 4. The relay pushing mechanism according to claim 3, characterized in that, one end of the buffer elastic member (50) abuts against the lower part of the moving contact plate (20), and the other end abuts against the insulating member (16) . 5. The relay pushing mechanism according to claim 4, characterized in that, the insulator (16) is provided with an elastic member installation part (51), and the other end of the buffer elastic member (50) abuts against the said insulating member (16). on the installation part (51) of the elastic piece. 6. The relay pushing mechanism according to claim 3, characterized in that, the upper pushing rod (12) is provided with a circlip (80), and one end of the buffer elastic member (50) bears against the moving contact plate ( 20), and the other end against the upper end of the snap ring (80). 7. The relay pushing mechanism according to claim 6, characterized in that a washer (70) is provided on the upper end of the retainer (80), and the other end of the upper push rod (12) is against the washer sheet (70). 8. The relay pushing mechanism according to claim 1, characterized in that, the moving iron core (30) is provided with a reset elastic member (60) for providing a reset elastic force for the moving iron core (30), so The reset elastic part (60) bears on the moving iron core (30). 9. The relay pushing mechanism according to claim 1, characterized in that the insulator (16) is a ceramic insulator. 10. The relay pushing mechanism according to claim 1, characterized in that, the insulator (16) is fixedly connected to the upper push rod (12) and the lower push rod (14) by means of injection molding, inlaying or welding. 11. The relay pushing mechanism according to claim 1, characterized in that, the insulating member (16) is any one of a cylinder, a tapered column, a square column or a polygonal column. 12. The relay pushing mechanism according to claim 1, characterized in that, the insulating member (16) is a hollow structure inside. 13. The relay pushing mechanism according to claim 1, characterized in that, the upper end of the insulator (16) is provided with a first counterbore (162), and the lower end of the upper pushing rod (12) is mated and connected in the first counterbore (162). 14. The relay pushing mechanism according to claim 13, characterized in that, the lower end of the upper pushing rod (12) is provided with a first step (120), and the first step (120) fits on the insulator (16 ) on the upper end face. 15. The relay pushing mechanism according to claim 1, characterized in that, the lower end of the insulator (16) is provided with a second counterbore (164), and the upper end of the lower pushing rod (14) is mated and connected in the second counterbore (164). 16. The relay pushing mechanism according to claim 15, characterized in that, the upper end of the lower pushing rod (14) is provided with a second step (140), and the second step (140) fits on the insulator (16 ) on the lower end face. 17. The relay pushing mechanism according to claim 14, characterized in that, a third step (122) is provided at the lower end of the upper push rod (12), and the third step (122) is matched with the third step (122). One counterbore (162). 18. The relay pushing mechanism according to claim 17, characterized in that a first groove (121) is left between the first step (120) and the third step (122), and the first counterbore A first flange (163) is formed on the outer side of (162), and the first flange (163) is inserted into the first groove (121). 19. The relay pushing mechanism according to claim 16, characterized in that, the upper end of the lower push rod (14) is provided with a fourth step (142), and the fourth step (142) is cooperatively arranged at the second Inside the second counterbore (164). 20. The relay pushing mechanism according to claim 19, characterized in that, a second groove (141) is left between the second step (140) and the fourth step (142), and the second counterbore A second flange (165) is formed on the outer side of (164), and the second flange (165) is inserted into the second groove (141). 21. A relay, comprising a housing, a static contact (90) arranged in the housing, a pushing mechanism, and a driving coil (100), the driving coil (100) drives the pushing mechanism to reciprocate up and down, so that The moving contact plate (20) on the pushing mechanism is connected to or separated from the static contact (90); characterized in that, the pushing mechanism is the pushing mechanism described in any one of claims 1-20. 22. The relay according to claim 21, characterized in that, the drive coil (100) is fixed with a static iron core (101) inside, and the moving iron core (30) is provided with a The core (30) provides a return elastic member (60) with return elastic force, one end of the return elastic member (60) is against the moving iron core (30), and the other end is against the static iron core (101) The lower end is to provide restoring elastic force for the moving iron core (30).