Push rod type high-voltage-withstanding relay

Abstract

The utility model relates to a push rod type high-voltage-resistant relay, which comprises a magnetic circuit part, a push card and a contact part which are assembled on a base, and a shell used for enclosing the base, an anti-splashing retaining wall is arranged in an inner cavity of the shell and corresponds to a contact matching area of the contact part in a convex forming structure; and when the shell covers the base, the anti-splashing retaining wall is arranged beside the contact matching area of the contact part in a non-contact manner. According to the utility model, the anti-splashing retaining wall forms a blocking structure capable of enabling radial splashing contact spatter to be attached at the contact matching area of the contact part, so as to reduce the free landing collection of the contact spatter between the movable spring and the static spring, effectively delay the conductive path collection of the contact spatter between the movable spring and the static spring, and improve the contact quality. The pressure resistance of the push rod type relay can be effectively improved, and the push rod type relay can be reliably formed in a subminiature structure.

Description

Technical Field

[0001] The utility model relates to a relay, in particular to a push rod type high voltage-resistant relay, which is particularly suitable for reliable molding of relays with ultra-small structures. Background Art

[0002] The push rod relay is mainly composed of a magnetic circuit part assembled on the base, a push card and a contact part. Among them, the magnetic circuit part is mainly composed of a coil frame, a coil assembled on the coil frame, an iron core assembled in the coil frame, a yoke assembled beside the coil, and an armature of an approximately L-shaped structure assembled at the edge of the yoke; the contact part is mainly composed of a moving spring assembly and a static spring assembly. The static spring assembly is usually located on the side away from the magnetic circuit part compared to the moving spring assembly, and the moving contact of the moving spring assembly and the static contact of the static spring assembly are usually kept in a normally open state; the push card is connected between the armature of the magnetic circuit part and the moving spring assembly of the contact part. The working principle of the push rod relay of the above structure is:

[0003] When current is applied to both ends of the coil lead pins in the magnetic circuit part, the exciting current of the coil will generate magnetic flux, which will form a magnetic circuit through the iron core, armature, yoke and working air gap, and generate electromagnetic attraction in the working air gap;

[0004] When the excitation current rises to the set value, the electromagnetic attraction generated by the magnetic circuit part will overcome the reaction force of the movable spring assembly of the contact part, causing the armature to flip at the yoke and attract the iron core, so that the armature drives the push card to push the movable spring assembly to compress and deform, so that the movable contact of the movable spring assembly and the normally open static contact of the static spring assembly are closed;

[0005] When the excitation current decreases to the set value, the reaction force of the movable spring assembly in the contact part is greater than the electromagnetic attraction of the magnetic circuit part, and the compressed and deformed movable spring assembly is reset. At this time, the movable spring assembly is disconnected from the static spring assembly and drives the push card to push the armature of the magnetic circuit part, so that the armature of the magnetic circuit part is disconnected from the iron core and flipped to reset.

[0006] In the operation of various relays including the above-mentioned push rod relay, the dynamic spring assembly and the static spring assembly bear the important task of breaking and connecting the circuit. When the dynamic contact and the static contact are infinitely close to each other, a breakdown phenomenon will occur, thus forming an arc. Due to the high temperature of the arc, a molten metal pool will form on the surface of the contact. When the contacts are in full contact and collision, these metal pools will produce metal splashes - commonly known as contact splashes.

[0007] As for the above-mentioned contact splash phenomenon in the above-mentioned push rod type relay structure, since there is no blocking structure for the contact splash to attach in the contact matching area of ​​the contact part, the generated contact splash will fall freely to the ground after radial splashing, and gather between the moving reed and the static reed on the top surface of the base. Since the edge of the moving reed and the edge of the static reed are areas with weak insulation performance, the contact splash that falls freely on the edges on both sides of the reed in the width direction (transverse to the pushing direction of the push card) is easy to gather to form a conductive path, which reduces the insulation performance between the moving and static springs and poses a risk of short circuit. This is especially obvious in the compact ultra-small push rod type relay structure, because the matching space between the moving and static springs of the ultra-small push rod type relay is itself very narrow, and the contact splash gathers here to more easily form a conductive path.

[0008] At present, in the design technology of relay structure, in order to prevent the contact splashing of the contact part, there is a technology of setting an anti-splashing retaining wall beside the contact matching area, such as the technology disclosed in the Chinese patent document named "A snap-on conversion electromagnetic relay", the publication number is CN 218730690 U, and the publication date is March 24, 2023. However, this kind of technology depends on the relay of a specific structure, and is not designed for or applicable to the push rod relay, so it cannot be used to effectively solve the contact splashing phenomenon of the above push rod relay. Utility Model Content

[0009] The technical purpose of the utility model is to provide a push rod type high voltage withstand relay which can effectively delay the formation of conductive path between moving and static springs of contact splashing materials in view of the particularity of the above-mentioned push rod type relay and contact splashing phenomenon and the deficiencies of the prior art.

[0010] The technical purpose of the utility model is achieved by the following technical solution: a push rod type high withstand voltage relay, comprising a magnetic circuit part, a push card and a contact part assembled on a base, and a shell used to enclose the base;

[0011] In the inner cavity of the housing, at the contact matching area corresponding to the contact part, a splash-proof retaining wall is provided in a convex molding structure;

[0012] When the housing encloses the base, the splash-proof baffle is arranged in a non-contact manner beside the contact mating area of ​​the contact portion.

[0013] The above technical measures are aimed at the particularities of the above-mentioned push rod relay and contact splashing phenomenon. Under the premise of not affecting the normal operation of the push rod relay, an anti-splash baffle wall that can be located next to the contact matching area of ​​the contact part is set in the inner cavity of the shell. The anti-splash baffle wall on the shell forms a blocking structure at the contact matching area of ​​the contact part to which radially splashed contact splashes can adhere, so as to reduce the free falling and collection of contact splashes between the moving and static springs, thereby effectively delaying the formation of a conductive path between the moving and static springs, especially between the edge of the moving spring and the edge of the static spring, which is beneficial to effectively improve the voltage resistance performance of the push rod relay and is beneficial to the reliable molding of the push rod relay with an ultra-small structure.

[0014] As one of the preferred technical solutions, in the inner cavity of the housing, corresponding to the contact matching area of ​​the contact part, two anti-splash retaining walls are formed in a spaced arrangement structure and convexly;

[0015] When the housing surrounds the base, the two splash-proof baffles are arranged in a non-contact manner at the corresponding two sides of the contact matching area of ​​the contact part.

[0016] The above-mentioned technical measures form anti-splash retaining walls on both sides of the contact matching area of ​​the contact part, thereby forming a large-area blocking structure as large as possible on both sides of the contact matching area of ​​the contact part to allow radially splashed contact splashes to adhere, so as to greatly reduce the free fall and collection of contact splashes between the moving and static springs, and reliably delay the contact splashes from forming a conductive path and collecting between the moving and static springs.

[0017] Further, the static spring assembly of the contact portion has a static spring sheet and a static contact point;

[0018] The static spring piece has a base plug-in portion and a contact connection portion, and a transition shoulder portion with a reduced width is provided between the base plug-in portion and the contact connection portion, and the width of the contact connection portion is smaller than the width of the base plug-in portion;

[0019] When the housing surrounds the base, two splash-proof baffles in the housing are arranged to straddle corresponding sides of the contact connection portion in a non-contact manner.

[0020] The static spring assembly of the above technical measures, without affecting the normal operation of the push rod relay, makes the two anti-splash retaining walls in the housing as close as possible to the contact matching area of ​​the contact part, so as to ensure that the radially splashing contact splashes can adhere to the anti-splash retaining walls as much as possible, thereby reliably reducing the free fall of the contact splashes.

[0021] Furthermore, the transition shoulder portion on the static spring piece is located at the lower part of the static contact connected to the contact connecting portion;

[0022] The bottom edge of the splash-proof baffle in the housing abuts against or is close to the corresponding side transition shoulder of the static spring sheet and is located at the lower part of the static contact connected to the contact connecting part.

[0023] The above-mentioned technical measures enable the anti-splash retaining wall to surround the contact matching area of ​​the contact part with as large an area as possible, thereby forming as large an area blocking structure as possible to which the radially splashing contact splashes can adhere, to ensure that the radially splashing contact splashes can adhere to the anti-splash retaining wall as much as possible, and reliably reduce the free fall of the contact splashes.

[0024] As one of the preferred technical solutions, the arrangement position of the splash-proof baffle in the housing at the contact matching area at least surrounds the static contact contact side of the static spring assembly at the corresponding side, and matches with the movable spring piece of the movable spring assembly with a set stroke in a non-contact manner. Under the premise of not affecting the normal operation of the push rod relay, this technical measure uses the relatively fixedly arranged static contacts as the positioning reference, so that the splash-proof baffle surrounds the contact matching area of ​​the contact part as much as possible. In addition, the anti-splash baffle wall of the technical measure can also reliably constrain and limit the overtravel of the dynamic spring assembly, that is, within the set stroke range of the dynamic spring assembly, the moving contact of the dynamic spring assembly is contacted and attracted with the static contact of the static spring assembly within the range surrounded by the anti-splash baffle wall, and the dynamic spring leaf of the dynamic spring assembly and the anti-splash baffle wall maintain non-contact cooperation; when the dynamic spring assembly overtravels, the anti-splash baffle wall will not hinder the moving contact of the dynamic spring assembly from contacting and attracting with the static contact of the static spring assembly, but will produce a blocking limit on the overtravel dynamic spring assembly due to the contact and collision of the overtravel dynamic spring assembly on the anti-splash baffle wall, which is beneficial to reduce the risk of secondary connection between the dynamic spring assembly and the static spring assembly that is not technically required.

[0025] As one of the preferred technical solutions, an insulating coating is provided on the moving reed and / or the stationary reed of the contact portion at the shortest creepage distance path between the top side of the base.

[0026] Furthermore, the insulating coating on the static spring piece is formed at the transition shoulder portion between the base plug-in portion and the contact connecting portion of the static spring piece.

[0027] Furthermore, the insulating coating on the movable spring piece is formed at the transition shoulder portion between the base plug-in portion and the contact connection portion of the movable spring piece.

[0028] The above technical measures are aimed at the weak points of the shortest creepage distance path that may appear between the dynamic and static springs of the contact part. Through the molding of the insulating coating, on the one hand, the creepage distance between the edge of the static spring and the edge of the dynamic spring is increased, and on the other hand, an insulating barrier is formed between the freely falling contact splashes and the static spring to prevent the freely falling contact splashes from forming a conductive path between the dynamic and static springs, thereby reliably increasing the creepage distance between the dynamic and static springs and improving the insulation and voltage resistance performance.

[0029] In addition, the insulating coating of the above technical measures is light and thin. While meeting the technical requirements of insulation performance, it will not hinder the working performance of the contact part and will not increase the molding structure of the entire relay, that is, it meets the insulation performance requirements in the ultra-miniaturized structural design.

[0030] The beneficial technical effect of the utility model is as follows: the above technical measures are aimed at the particularities of the above push rod type relay and the contact splash phenomenon. Under the premise of not affecting the normal operation of the push rod type relay, an anti-splash baffle wall which can be located beside the contact matching area of ​​the contact part is arranged in the inner cavity of the shell. The anti-splash baffle wall on the shell forms a blocking structure as large as possible at the contact matching area of ​​the contact part to allow radially splashed contact splashes to adhere, so as to reduce the free falling collection of contact splashes between the moving and static springs. Even if the free falling collection is formed with the extension of the service time, the creepage distance between the moving and static springs can be reliably increased by the existence of the insulating coating of the contact part, thereby effectively delaying or even avoiding the contact splashes from forming a conductive path collection between the moving and static springs, which is beneficial to effectively improve the voltage resistance performance of the push rod type relay and is beneficial to the reliable molding of the push rod type relay with an ultra-small structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a structural schematic diagram of the utility model.

[0032] Figure 2 for Figure 1 Schematic diagram of the cross-sectional structure of the relay shown at the top.

[0033] Figure 3 for Figure 1 and Figure 3 Schematic diagram of the shell structure.

[0034] Figure 4 for Figure 1 and Figure 2 Schematic diagram of the static spring assembly structure.

[0035] The meaning of the codes in the figure are: 1—base; 2—static spring assembly; 21—static spring sheet; 211—base plug-in portion; 212—contact connection portion; 213—transition shoulder portion; 22—static contact; 3—housing; 31—main retaining wall; 32—anti-splash retaining wall; 4—moving spring assembly. DETAILED DESCRIPTION

[0036] The utility model relates to a relay, specifically a push rod type, high voltage resistance relay, which is particularly suitable for reliable molding of ultra-small structure relays. The main technical solution of the utility model is specifically described below in combination with multiple embodiments. Figure 1 , Figure 2 , Figure 3 and Figure 4 The technical solution of the present utility model is clearly and in detail explained; although other embodiments are not separately drawn with drawings, their main structures can still refer to the drawings of embodiment 1.

[0037] It should be noted that the drawings of the present invention are schematic, and unnecessary details have been simplified to clarify the technical purpose of the present invention, so as to avoid blurring the technical solution of the present invention in the prior art. In addition, the expressions "approximately" and "substantially" in the following text regarding quantity or matching relationship mean that reasonable assembly errors and processing errors in the industry are allowed to exist, and do not literally express absolute quantity or matching relationship.

[0038] Example 1

[0039] See also Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the utility model comprises a magnetic circuit part, a push card and a contact part assembled on a base 1 , and a shell 3 used for surrounding the base 1 .

[0040] Specifically, the magnetic circuit part on the base 1 is mainly composed of a coil frame, a coil mounted on the coil frame, an iron core mounted in the coil frame, a yoke mounted on the side of the coil, and an armature with an approximately L-shaped structure mounted at the edge of the yoke. The coil has a lead-out pin extending from the bottom of the base 1.

[0041] The contact part on the base 1 is mainly composed of a dynamic spring assembly 4 and a static spring assembly 2. The static spring assembly 2 is located at a side away from the magnetic circuit part compared to the dynamic spring assembly 4, and the dynamic contact of the dynamic spring assembly 4 and the static contact 22 of the static spring assembly 2 are kept in a normally open state. The dynamic contact of the dynamic spring assembly 4 and the static contact 22 of the static spring assembly 2 constitute a contact matching area of ​​the contact part.

[0042] The push card on the base 1 is connected between the armature of the magnetic circuit part and the movable spring assembly 4 of the contact part, and moves between the magnetic circuit part and the contact part according to the increase and decrease of the electromagnetic attraction and the elastic force of the movable spring piece.

[0043] Based on the main structure of the push rod type relay, two anti-splash retaining walls 32 are provided in the inner cavity of the housing 3 that encloses the push rod relay, corresponding to the contact matching area of ​​the contact part, with a protruding structure. The two anti-splash retaining walls 32 are protrudingly formed based on the top wall of the housing 3 and the vertical wall adjacent to the static spring assembly 2. The two anti-splash retaining walls 32 form a spacing arrangement structure in the inner cavity of the housing 3, and the arrangement spacing is greater than the outer diameter of the static contact 22 on the static spring assembly 2. Of course, other structures can also be formed in the inner cavity of the aforementioned housing 3, such as the main retaining wall 31 between the magnetic circuit part and the contact part and above the push card.

[0044] Since in the matching structure between the housing 3 and the base 1, the two splash-proof baffles 32 need to be as close to the contact matching area as possible without affecting the normal contact work, the static spring piece 21 of the static spring assembly 2 is formed in the following structure:

[0045] The static spring piece 21 has a base plug-in portion 211 and a contact connection portion 212. The base plug-in portion 211 is at the bottom and is used for plugging and installing on the base 1 and forming a lead pin. The contact connection portion 212 is at the top and is used for connecting the static contact 22.

[0046] The base plug-in portion 211 and the contact connection portion 212 are formed with a transition structure with a decreasing width, that is, there is a transition shoulder portion 213 with a decreasing width between the base plug-in portion 211 and the contact connection portion 212, the static spring piece 21 area above the transition shoulder portion 213 is the contact connection portion 212, and the static spring piece 21 area below the transition shoulder portion 213 is the base plug-in portion 211, so that the width of the contact connection portion 212 is smaller than the width of the base plug-in portion 211, and the width refers to the direction of the spring piece transverse to the displacement direction of the above-mentioned push card;

[0047] In this way, the arrangement spacing between the two anti-splash baffles 32 in the above-mentioned shell 3 is slightly larger than the width of the contact connecting part 212 of the static spring piece 21; in the top view direction, the molding positions of the two anti-splash baffles 32 are within the coverage range of the base plug-in part 211 in the width direction.

[0048] When the shell 3 encloses the base 1 with the magnetic circuit part, the push card, and the contact part, the two splash-proof baffles 32 in the inner cavity of the shell 3 are arranged in a non-contact manner across the corresponding two sides of the contact connection part 212, that is, a micro-gap fit is formed between the inner wall surface of each splash-proof baffle 32 and the corresponding edge of the contact connection part 212. In other words, the two splash-proof baffles 32 in the inner cavity of the shell 3 are arranged in a non-contact manner at the corresponding two sides of the contact matching area of ​​the contact part.

[0049] In order to prevent the anti-splash baffle 32 in the housing 3 from interfering with the position of the dynamically changing dynamic spring assembly 4 during operation, the arrangement position of the anti-splash baffle 32 in the housing 3 at the contact matching area should surround the static contact 22 of the static spring assembly 2 on the corresponding side and form a small outer edge from the contact side of the static contact 22. The depth of the outer edge should allow the dynamic contact of the dynamic spring assembly 4 in a normal stroke to contact and engage with the static contact 22, but not to form a contact match with the dynamic spring piece in the contact attracted state, that is, in the contact attracted state, the anti-splash baffle 32 is adjacent to the edge of the dynamic spring assembly 4 and cooperates with the dynamic spring piece with a micro gap, so as not to interfere with the working relationship between the dynamic spring assembly 4 and the static spring assembly 2 within the set stroke.

[0050] Of course, in order to increase the blocking effect of the anti-splash baffle wall 32 on the contact splashes generated in the contact mating area, the transition shoulder portion 213 on the above-mentioned static spring sheet 21 is preferably located at the lower part of the static contact 22 connected to the contact connecting portion 212, that is, basically flush with or slightly lower than the bottom edge of the static contact 22 in the width direction.

[0051] The static spring piece 21 of the above structure is assembled in the socket on the base 1 through the base plug-in portion 211. When the base plug-in portion 211 is inserted into the base 1, the transition shoulder portion 213 is adjacent to the top side surface of the base 1 and slightly protrudes from the top side surface of the base 1.

[0052] The bottom edge of the splash-proof baffle wall 32 in the housing 3 abuts (or is close to abutting) the corresponding side transition shoulder 213 of the static spring sheet 21 , and is also located at the lower part of the static contact 22 connected to the contact connection portion 212 .

[0053] In order to increase the creepage distance between the moving and static springs of the above-mentioned push rod type relay and avoid the formation of conductive paths by freely falling contact splashes, an insulating coating is formed with a full coverage structure at the transition shoulder 213 of the above-mentioned static spring piece 21, that is, the insulating coating fully covers the surface of the transition shoulder 213, that is, the insulating coating at the transition shoulder 213 of the static spring piece 21 is used as the insulating structure at the shortest creepage distance path between the moving spring piece and the static spring piece of the contact part on the top side of the base, and the aforementioned top side of the base refers to the side of the base facing the contact mating area.

[0054] Example 2

[0055] The other contents of this embodiment are the same as those of Embodiment 1, except that:

[0056] The anti-splash retaining wall in the inner cavity of the housing is a single-sided wall, which only blocks contact splashes on any set side of the contact matching area.

[0057] Of course, the effect of this embodiment is obviously not as good as that of embodiment 1.

[0058] Example 3

[0059] The other contents of this embodiment are the same as those of Embodiment 1, except that:

[0060] The base plug-in portion and the contact connection portion of the static spring piece are basically of equal width structure;

[0061] On this basis, if anti-splash retaining walls are formed on both sides of the static spring piece, the matching distance between the anti-splash retaining wall and the contact matching area will obviously increase, which is not conducive to effectively blocking the contact splashes;

[0062] At this time, the anti-splash retaining wall in the inner cavity of the housing can be formed in the structure of a drooping column, that is, the anti-splash retaining wall and the vertical wall of the housing adjacent to the static spring assembly are disconnected to form an assembly space for the static spring piece, so that the anti-splash retaining wall is inserted into the matching gap between the dynamic spring piece and the static spring piece, but this will obviously increase the matching distance between the dynamic spring assembly and the static spring assembly, which is not conducive to the miniaturization of the push rod type relay structure;

[0063] In addition, the insulating coating structure on the static spring piece is eliminated due to the elimination of the transition shoulder portion.

[0064] Example 4

[0065] The other contents of this embodiment are the same as those of Embodiment 1, except that:

[0066] The movable spring piece has a base plug-in portion and a contact connection portion, the base plug-in portion is at the bottom and is used for plugging and installing on the base, and the contact connection portion is at the top and is used for connecting the movable contact; the base plug-in portion and the contact connection portion are formed with a transition structure with a reduced width, that is, there is a transition shoulder portion with a reduced width between the base plug-in portion and the contact connection portion, the movable spring piece area above the transition shoulder portion is the contact connection portion, and the movable spring piece area below the transition shoulder portion is the base plug-in portion, so that the width of the contact connection portion is smaller than the width of the base plug-in portion, and the width refers to the direction of displacement of the spring piece transverse to the above-mentioned push card;

[0067] Eliminate the insulating coating at the transition shoulder of the static spring;

[0068] An insulating coating is formed at the transition shoulder portion of the movable spring.

[0069] In this way, the insulating coating at the transition shoulder of the moving spring piece serves as the insulating structure at the shortest creepage distance path between the moving spring piece and the static spring piece of the contact portion on the top side of the base.

[0070] Example 5

[0071] The other contents of this embodiment are the same as those of Embodiment 1, except that:

[0072] The movable spring piece has a base plug-in portion and a contact connection portion, the base plug-in portion is at the bottom and is used for plugging and installing on the base, and the contact connection portion is at the top and is used for connecting the movable contact; the base plug-in portion and the contact connection portion are formed with a transition structure with a reduced width, that is, there is a transition shoulder portion with a reduced width between the base plug-in portion and the contact connection portion, the movable spring piece area above the transition shoulder portion is the contact connection portion, and the movable spring piece area below the transition shoulder portion is the base plug-in portion, so that the width of the contact connection portion is smaller than the width of the base plug-in portion, and the width refers to the direction of displacement of the spring piece transverse to the above-mentioned push card;

[0073] An insulating coating is formed at the transition shoulder portion of the movable spring.

[0074] In this way, the insulating coating at the transition shoulder of the moving spring piece and the insulating coating at the transition shoulder of the static spring piece together serve as the insulating structure at the shortest creepage distance path between the moving spring piece and the static spring piece of the contact part on the top side of the base.

[0075] The above embodiments are only used to illustrate the present invention, but not to limit it.

[0076] Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the above embodiments or make equivalent substitutions for some of the technical features therein; and these modifications or substitutions do not deviate the essence of the corresponding technical solutions from the spirit and scope of the present invention.

Claims

1. A push rod type high withstand voltage relay, comprising a magnetic circuit part, a push card and a contact part assembled on a base (1), and a housing (3) used to enclose the base (1); Features: In the inner cavity of the housing (3), at a contact matching area corresponding to the contact portion, an anti-splash retaining wall (32) is provided in the form of a raised molding structure; When the housing (3) surrounds the base (1), the splash-proof baffle wall (32) is arranged in a non-contact manner beside the contact mating area of ​​the contact portion.

2. The push rod type high withstand voltage relay according to claim 1, characterized in that: In the inner cavity of the housing (3), corresponding to the contact matching area of ​​the contact portion, two splash-proof retaining walls (32) are formed in a spaced arrangement structure and in a convex shape; When the housing (3) surrounds the base (1), the two splash-proof retaining walls (32) are arranged in a non-contact manner at corresponding sides of the contact matching area of ​​the contact portion.

3. The push rod type high withstand voltage relay according to claim 2, characterized in that: The static spring assembly (2) of the contact portion comprises a static spring sheet (21) and a static contact point (22); The static spring piece (21) comprises a base plug-in portion (211) and a contact connection portion (212), and a transition shoulder portion (213) with a decreasing width is provided between the base plug-in portion (211) and the contact connection portion (212), and the width of the contact connection portion (212) is smaller than the width of the base plug-in portion (211); When the housing (3) surrounds the base (1), two splash-proof retaining walls (32) in the housing (3) are arranged in a non-contact manner straddling corresponding sides of the contact connection portion (212).

4. The push rod type high withstand voltage relay according to claim 3, characterized in that: The transition shoulder portion (213) on the static reed sheet (21) is located at the lower portion of the static contact (22) connected to the contact connection portion (212); The bottom edge of the splash-proof baffle wall (32) in the housing (3) abuts against or is close to the corresponding side transition shoulder (213) of the static spring sheet (21), and is located at the bottom of the static contact (22) connected to the contact connection portion (212).

5. The push rod type high withstand voltage relay according to claim 1, 2, 3 or 4, characterized in that: The arrangement position of the splash-proof baffle wall (32) in the housing (3) at the contact matching area at least surrounds the contact side of the static contact (22) of the static spring assembly (2) at the corresponding side, and matches with the movable spring sheet of the movable spring assembly (4) with a set stroke in a non-contact manner.

6. The push rod type high withstand voltage relay according to claim 1 or 3, characterized in that: The movable reed and the stationary reed (21) of the contact portion are provided with an insulating coating on the movable reed and / or the stationary reed (21) at the shortest creepage distance path between the top side of the base (1).

7. The push rod type high withstand voltage relay according to claim 6, characterized in that: The insulating coating on the static reed (21) is formed at a transition shoulder portion (213) between a base plug-in portion (211) and a contact connection portion (212) of the static reed (21).

8. The push rod type high withstand voltage relay according to claim 6, characterized in that: The insulating coating on the movable spring piece is formed at the transition shoulder portion between the base plug-in portion and the contact connection portion of the movable spring piece.

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