阅读说明：本技术 一种超小型高触点间耐压高寿命的拍合式继电器 (Subminiature high-contact pressure-resistant long-life clapper type relay ) 是由 陈政和 吴灵勇 陈红波 于 2020-11-24 设计创作，主要内容包括：本发明公开了一种超小型高触点间耐压高寿命的拍合式继电器,包括线圈架、动簧衔铁部件、常开静簧和常闭静簧；线圈架包括上凸缘、下凸缘和连接在上凸缘与下凸缘之间的缠绕有漆包线的绕线窗口；上凸缘设有常开静簧插装部和常闭静簧插装部；常开静簧和常闭静簧分别插装于常开静簧插装部和常闭静簧插装部的插槽中,在线圈架上设有对应于触点断开时电弧移动方向的至少一个通气槽,且通气槽是连通在触点周围空间与线圈架的绕线侧空间之间。本发明一方面可以降低触点周围的空气电离程度,以提高继电器产品的寿命；另一方面,可以在触点周围形成一定的洁净区域,使得触点的飞溅物无法污染该区域,从而提高继电器产品的试验后的触点间耐压。(The invention discloses a subminiature high-contact pressure-resistant long-life clapper type relay, which comprises a coil rack, a movable spring armature component, a normally open static spring and a normally closed static spring, wherein the coil rack is provided with a coil spring, a movable spring armature component and a normally open static spring; the coil rack comprises an upper flange, a lower flange and a winding window which is connected between the upper flange and the lower flange and is wound with an enameled wire; the upper flange is provided with a normally open static spring inserting part and a normally closed static spring inserting part; the normally open static spring and the normally closed static spring are respectively inserted into slots of the normally open static spring insertion part and the normally closed static spring insertion part, at least one vent groove corresponding to the moving direction of the electric arc when the contact is disconnected is arranged on the coil frame, and the vent groove is communicated between the surrounding space of the contact and the winding side space of the coil frame. On one hand, the invention can reduce the air ionization degree around the contact to prolong the service life of the relay product; on the other hand, a certain clean area can be formed around the contact, so that splashes of the contact cannot pollute the area, and the withstand voltage between the contacts of the relay product after the test is improved.)

1. A subminiature high-contact pressure-resistant long-life clapper type relay comprises a coil rack, a movable spring armature part, a normally open static spring and a normally closed static spring; the coil rack comprises an upper flange, a lower flange and a winding window which is connected between the upper flange and the lower flange and is wound with an enameled wire; the opposite two sides of the upper flange are respectively provided with a normally open static spring inserting part and a normally closed static spring inserting part in a protruding and extending way; the normally open static spring and the normally closed static spring are respectively inserted into the slots of the normally open static spring inserting part and the normally closed static spring inserting part, so that a part of the normally open static spring, which is provided with a static contact, and a part of the normally closed static spring, which is provided with a static contact, are positioned above the upper flange in a mutually matched manner, and the surrounding space of the contact above the upper flange and the winding side space below the upper flange are isolated by the upper flange; the part of the moving spring armature component provided with the moving contact is matched between the part of the normally closed static spring provided with the static contact and the part of the normally open static spring provided with the static contact; the method is characterized in that: at least one vent groove corresponding to the moving direction of the electric arc when the contact is disconnected is arranged on the coil rack, and the vent groove is communicated between the space around the contact and the winding side space of the coil rack so as to guide the air in the space around the contact to the winding side space by utilizing the movement of the electric arc, thereby reducing the air ionization degree of the space around the contact and prolonging the service life of the product.

2. The subminiature high contact withstand voltage long life clapper relay according to claim 1, wherein: the vent groove is a first through groove arranged at the joint of the normally closed static spring inserting part and the upper flange; the first through groove is arranged below the slot of the normally closed static spring inserting portion, one end of the first through groove is led out of the normally closed static spring inserting portion to the upper surface of the upper flange in the space around the contact in the direction pointing to the normally open static spring inserting portion, and the other end of the first through groove is led out of the normally closed static spring inserting portion in the direction departing from the normally open static spring inserting portion; and the other end of the first through groove is also provided with a first groove corresponding to the outer side wall of the upper flange, so that the other end of the first through groove can be communicated with the winding side space through the first groove.

3. The subminiature high contact withstand voltage long life clapper relay according to claim 2, wherein: the upper surface of the upper flange in the space around the contact is provided with a first convex rib at the front side position of the notch corresponding to one end of the first through groove, so that splashes generated during contact ablation are prevented from entering the first through groove, the first through groove forms a clean area where the splashes cannot fall in a creepage path between the normally open contact and the normally closed contact, and the pressure resistance between the contacts after the test is improved.

4. The subminiature high contact withstand voltage long life clapper relay according to claim 1, wherein: the vent groove is a through hole arranged on the upper flange; the upper end of the through hole is communicated to the upper surface of the upper flange in the space around the contact, and the lower end of the through hole is communicated to the winding side space.

5. The subminiature high contact withstand voltage long life clapper relay according to claim 4, wherein: the through-hole is provided at a position near an edge of the upper flange.

6. The subminiature high contact withstand voltage long life clapper relay according to claim 1, wherein: an iron core mounting hole is formed in the middle of the upper flange, an iron core is assembled in the iron core mounting hole, and the head of the iron core, which is set as an iron core polar surface, is exposed on the iron core mounting hole; the normally open static spring inserting part and the normally closed static spring inserting part are offset on one side of the upper flange relative to the iron core mounting hole; a retaining wall is arranged between the space around the contact and the pole face of the iron core; the vent groove is a second through groove which is arranged on the retaining wall and used for communicating the space around the contact with the space around the pole face of the iron core.

7. The subminiature high contact withstand voltage long life clapper relay according to claim 6, wherein: the periphery of the upper flange is provided with a surrounding wall corresponding to the periphery of the iron core mounting hole; the surrounding wall is provided with a third through groove, one end of the third through groove is communicated with the space around the pole face of the iron core, and the other end of the third through groove is communicated with the outside of the surrounding wall; and a second groove is formed in the other end of the third through groove, corresponding to the outer side wall of the upper flange, so that the other end of the third through groove can be communicated with the winding side space through the second groove.

8. The subminiature high contact withstand voltage long life clapper relay according to claim 1, wherein: the normally open static spring and the normally closed static spring are respectively reversely inserted into slots of the normally open static spring insertion part and the normally closed static spring insertion part, so that pins of the normally open static spring and the normally closed static spring respectively extend upwards; the part of the normally open static spring, which is provided with the static contact, is abutted against the upper surface of the upper flange, and the part of the normally closed static spring, which is provided with the static contact, is suspended above the upper flange.

9. The subminiature high contact withstand voltage long life clapper relay according to claim 8, wherein: the relay also comprises a bottom plate, and the bottom plate is arranged on the normally open static spring inserting part and the normally closed static spring inserting part; in the bottom plate, a second convex rib is further arranged at the position close to the inner side wall of the normally closed static spring inserting portion in a downward protruding mode, so that splashes generated during contact ablation are prevented from being attached to the inner side wall of the normally closed static spring inserting portion when splashed, a clean area where the splashes cannot fall in a creepage path between the normally open contact and the normally closed contact is formed, and the pressure resistance between the contacts after the test is improved.

Technical Field

The invention relates to the technical field of relays, in particular to a subminiature high-contact pressure-resistant long-service-life clapper type relay.

Background

A relay is an electronic control device having a control system (also called an input loop) and a controlled system (also called an output loop), which is commonly used in automatic control circuits, and which is actually an "automatic switch" that uses a small current to control a large current. Therefore, the circuit plays the roles of automatic regulation, safety protection, circuit conversion and the like. The clapper type relay is one of relays, and a magnetic circuit system of the clapper type relay adopts a clapper type structure. With the continuous expansion of the application field of relays, the requirements on the relays are higher and higher, and the relays are required to have the characteristics of small size, high voltage resistance between contacts and long service life.

In the relay in the prior art, after the relay is used for a period of time, due to ablation of contact materials, splashes of contacts can fall around the contacts, so that the withstand voltage between the contacts can be reduced, and the withstand voltage exceeds a lower limit value, so that leakage current is generated between the contacts, and the relay is failed. And because when the contacts are open, an arc is generated that ionizes the air around the contacts within the relay, making the product susceptible to electrical durability failure. In order to improve the electrical durability of the relay, one of the prior art methods is to increase the volume of the contact-side cavity, which increases the cost and volume of the relay, making it difficult to achieve miniaturization.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide a subminiature clapper type relay with high voltage resistance and long service life between contacts, which can reduce the air ionization degree around the contacts on one hand through structural improvement so as to prolong the service life of a relay product; on the other hand, a certain clean area can be formed around the contact, so that splashes of the contact cannot pollute the area, and the withstand voltage between the contacts of the relay product after the test is improved.

The technical scheme adopted by the invention for solving the technical problems is as follows: a subminiature high-contact pressure-resistant long-life clapper type relay comprises a coil rack, a movable spring armature part, a normally open static spring and a normally closed static spring; the coil rack comprises an upper flange, a lower flange and a winding window which is connected between the upper flange and the lower flange and is wound with an enameled wire; the opposite two sides of the upper flange are respectively provided with a normally open static spring inserting part and a normally closed static spring inserting part in a protruding and extending way; the normally open static spring and the normally closed static spring are respectively inserted into the slots of the normally open static spring inserting part and the normally closed static spring inserting part, so that a part of the normally open static spring, which is provided with a static contact, and a part of the normally closed static spring, which is provided with a static contact, are positioned above the upper flange in a mutually matched manner, and the surrounding space of the contact above the upper flange and the winding side space below the upper flange are isolated by the upper flange; the part of the moving spring armature component provided with the moving contact is matched between the part of the normally closed static spring provided with the static contact and the part of the normally open static spring provided with the static contact; at least one vent groove corresponding to the moving direction of the electric arc when the contact is disconnected is arranged on the coil rack, and the vent groove is communicated between the space around the contact and the winding side space of the coil rack so as to guide the air in the space around the contact to the winding side space by utilizing the movement of the electric arc, thereby reducing the air ionization degree of the space around the contact and prolonging the service life of the product.

The vent groove is a first through groove arranged at the joint of the normally closed static spring inserting part and the upper flange; the first through groove is arranged below the slot of the normally closed static spring inserting portion, one end of the first through groove is led out of the normally closed static spring inserting portion to the upper surface of the upper flange in the space around the contact in the direction pointing to the normally open static spring inserting portion, and the other end of the first through groove is led out of the normally closed static spring inserting portion in the direction departing from the normally open static spring inserting portion; and the other end of the first through groove is also provided with a first groove corresponding to the outer side wall of the upper flange, so that the other end of the first through groove can be communicated with the winding side space through the first groove.

The upper surface of the upper flange in the space around the contact is provided with a first convex rib at the front side position of the notch corresponding to one end of the first through groove, so that splashes generated during contact ablation are prevented from entering the first through groove, the first through groove forms a clean area where the splashes cannot fall in a creepage path between the normally open contact and the normally closed contact, and the pressure resistance between the contacts after the test is improved.

The vent groove is a through hole arranged on the upper flange; the upper end of the through hole is communicated to the upper surface of the upper flange in the space around the contact, and the lower end of the through hole is communicated to the winding side space.

The through-hole is provided at a position near an edge of the upper flange.

An iron core mounting hole is formed in the middle of the upper flange, an iron core is assembled in the iron core mounting hole, and the head of the iron core, which is set as an iron core polar surface, is exposed on the iron core mounting hole; the normally open static spring inserting part and the normally closed static spring inserting part are offset on one side of the upper flange relative to the iron core mounting hole; a retaining wall is arranged between the space around the contact and the pole face of the iron core; the vent groove is a second through groove which is arranged on the retaining wall and used for communicating the space around the contact with the space around the pole face of the iron core.

The periphery of the upper flange is provided with a surrounding wall corresponding to the periphery of the iron core mounting hole; the surrounding wall is provided with a third through groove, one end of the third through groove is communicated with the space around the pole face of the iron core, and the other end of the third through groove is communicated with the outside of the surrounding wall; and a second groove is formed in the other end of the third through groove, corresponding to the outer side wall of the upper flange, so that the other end of the third through groove can be communicated with the winding side space through the second groove.

The normally open static spring and the normally closed static spring are respectively reversely inserted into slots of the normally open static spring insertion part and the normally closed static spring insertion part, so that pins of the normally open static spring and the normally closed static spring respectively extend upwards; the part of the normally open static spring, which is provided with the static contact, is abutted against the upper surface of the upper flange, and the part of the normally closed static spring, which is provided with the static contact, is suspended above the upper flange.

The relay also comprises a bottom plate, and the bottom plate is arranged on the normally open static spring inserting part and the normally closed static spring inserting part; in the bottom plate, a second convex rib is further arranged at the position close to the inner side wall of the normally closed static spring inserting portion in a downward protruding mode, so that splashes generated during contact ablation are prevented from being attached to the inner side wall of the normally closed static spring inserting portion when splashed, a clean area where the splashes cannot fall in a creepage path between the normally open contact and the normally closed contact is formed, and the pressure resistance between the contacts after the test is improved.

Compared with the prior art, the invention has the beneficial effects that:

1. the invention adopts at least one vent groove corresponding to the moving direction of the electric arc when the contact is disconnected on the coil frame, and the vent groove is communicated between the space around the contact and the winding side space of the coil frame so as to guide the air in the space around the contact to the winding side space by utilizing the movement of the electric arc. The structure of the invention can reduce the air ionization degree of the space around the contact by utilizing the air exchange between the space around the contact and the winding side space of the coil rack, thereby prolonging the service life of the product; contact arc removes the air that takes around the contact and flows to the wire winding side through the air channel fast, reduces the air ionization degree around the contact for the difficult electric durability of product is inefficacy, avoids adopting the volume around the sacrificial contact to reduce the air ionization degree among the prior art simultaneously, and then realizes the miniaturization.

2. The first through groove is arranged at the joint of the normally closed static spring inserting part and the upper flange; the first through groove is arranged below the slot of the normally closed static spring inserting portion, one end of the first through groove is led out of the normally closed static spring inserting portion to the upper surface of the upper flange in the space around the contact in the direction pointing to the normally open static spring inserting portion, and the other end of the first through groove is led out of the normally closed static spring inserting portion in the direction deviating from the normally open static spring inserting portion; and the outer side wall corresponding to the upper flange is also provided with a first groove at the other end of the first through groove, so that the other end of the first through groove can be communicated with the winding side space through the first groove. According to the structure, the first through groove is designed on the normally closed static spring inserting side of the coil frame, so that air around the contact can be quickly guided to the winding side through the first through groove when the contact is disconnected from a normally open end. When the contact is disconnected from the normally open end, no matter whether the current flows to the movable spring end (namely the switching contact side) from the normally open static spring end or flows to the normally open static spring end from the movable spring end (namely the switching contact side), the electric arc always moves towards the normally closed static spring side because of the influence of the magnetic field generated by the normally open static spring and is elongated until the arc is broken. Thus, the first through groove is arranged at one side of the moving direction of the electric arc and penetrates through the air at the contact side and the winding side, so that the ionization degree at the contact side can be reduced, and the electric service life can be prolonged; and the creepage distance between the normally open contact and the normally closed contact is increased by the first through groove, so that the withstand voltage between the contacts of the relay product after the test is improved.

3. According to the invention, the first convex rib is arranged on the upper surface of the upper flange belonging to the space around the contact and at the position corresponding to the front side of the notch at one end of the first through groove. According to the structure, the first convex rib can be used for preventing splashes generated during contact ablation from entering the first through groove, so that the first through groove forms a clean area where the splashes cannot fall in a creepage path between the normally open contact and the normally closed contact, and the withstand voltage between the contacts after a test is improved.

4. The invention adopts the structure that the through hole is arranged on the upper flange; and the upper end of the through hole is communicated to the upper surface of the upper flange in the space around the contact, and the lower end of the through hole is communicated to the winding side space. According to the structure, the coil frame is provided with the through hole which penetrates through the air on the contact side and the air on the enameled wire side, so that the ionization degree of the contact side is reduced, and the electric service life is prolonged.

5. The invention adopts the structure that the second through groove used for communicating the space around the contact with the space around the pole face of the iron core is arranged on the retaining wall, and the third through groove is arranged on the surrounding wall. Utilize the second to lead to the groove for contact side air link up with iron core side air, lead to the groove through the third, make iron core side air link up with the air of enameled wire side again, thereby reduce contact side air ionization degree, improve experimental electric durability.

6. The invention adopts the bottom plate, and the second convex rib is arranged at the position close to the inner side wall of the normally closed static spring inserting part and protrudes downwards. The structure of the invention can be used for preventing splashes generated during contact ablation from attaching to the inner side wall of the normally closed static spring insertion part when the splashes splash is generated, so as to form a clean area in which the splashes can not fall in a creepage path between the normally open contact and the normally closed contact, thereby improving the pressure resistance between the contacts after the test.

The invention is further explained in detail with the accompanying drawings and the embodiments; however, the subminiature high-voltage step-on relay of the present invention is not limited to the embodiment.

Drawings

FIG. 1 is a schematic perspective view of an embodiment of the present invention (without a housing and in an upside-down state);

FIG. 2 is a schematic perspective view of an embodiment of the present invention (rotated at an angle, uncapped and flipped);

FIG. 3 is an exploded perspective view of an embodiment of the present invention (without a housing and in a flip-chip mating configuration);

FIG. 4 is a front view of an embodiment of the invention (uncapped and flipped);

FIG. 5 is a top view of an embodiment of the present invention (uncapped and flipped);

FIG. 6 is a cross-sectional view taken along line A-A of FIG. 5;

fig. 7 is a perspective configuration diagram of a bobbin of an embodiment of the present invention;

fig. 8 is a perspective view (rotated by one angle) of the bobbin of the embodiment of the present invention;

fig. 9 is a perspective view (rotated by an angle) of the bobbin of the embodiment of the present invention;

fig. 10 is a perspective configuration diagram (turned over by an angle) of the bobbin of the embodiment of the present invention;

fig. 11 is a top view of a bobbin of an embodiment of the present invention;

FIG. 12 is a sectional view taken along line B-B of FIG. 11;

FIG. 13 is a schematic perspective view of a base plate of an embodiment of the present invention;

fig. 14 is a perspective view (reverse side) of the bottom plate according to the embodiment of the present invention.

Detailed Description

Examples

Referring to fig. 1 to 14, in the subminiature high-contact-voltage-withstanding long-life clap-type relay according to the present invention, the relay of the present embodiment is an inverted structure, and may be a relay of other assembly structures such as a front-mounted or side-mounted relay; the relay comprises a coil rack 2, a bottom plate 1, a movable spring armature component 3, a normally open static spring 4 and a normally closed static spring 5; the coil former 2 comprises an upper flange 21, a lower flange 22 and a winding window 23 connected between the upper flange and the lower flange, wherein an enameled wire 61 is wound on the winding window 23; the normally open static spring 4 and the normally closed static spring 5 are respectively inserted in the upper flange 21 in an inverted manner, and a normally open static spring inserting part 24 and a normally closed static spring inserting part 25 are respectively arranged at two opposite sides of the upper flange 21 in an upward protruding manner; the normally open static spring 4 is inserted and matched in the slot 241 of the normally open static spring inserting part 24, and the part 41 of the normally open static spring 4, which is provided with the normally open static contact, is attached to the upper surface of the upper flange 21; the normally closed static spring 5 is inserted and matched in the slot 251 of the normally closed static spring inserting part 25, and the part 51 of the normally closed static spring 5, which is provided with the normally closed static contact, is suspended above the upper flange 21; the static contact part 41 of the normally open static spring 4 and the static contact part 51 of the normally closed static spring 5 are positioned above the upper flange 21 in a mutual matching way, and a contact surrounding space 71 above the upper flange and a winding side space 72 below the upper flange are separated by the upper flange; the part 31 provided with the moving contact of the moving spring armature component 3 is matched between the part 51 provided with the normally closed static contact of the normally closed static spring 5 and the part 41 provided with the normally open static contact of the normally open static spring 4; the bottom plate 1 is arranged on the normally open static spring inserting part 24 and the normally closed static spring inserting part 25; at least one ventilation groove corresponding to the moving direction of the arc when the contact is opened is arranged on the coil frame 2, and the ventilation groove is communicated between the contact surrounding space 71 and the winding side space 72 of the coil frame, so that the air of the contact surrounding space 71 is guided to the winding side space 72 of the coil frame by utilizing the arc movement, thereby reducing the air ionization degree of the contact surrounding space and prolonging the service life of the product.

In this embodiment, the normally open static spring 4 is inversely inserted into the slot 241 of the normally open static spring insertion portion 24, so that the pin 42 of the normally open static spring 4 extends upward, and the normally closed static spring 5 is inversely inserted into the slot 251 of the normally closed static spring insertion portion 25, so that the pin 52 of the normally closed static spring 5 extends upward; the part 51 provided with the fixed contact of the normally open fixed spring 4 is abutted against the upper surface of the upper flange 21, and the part 51 provided with the fixed contact of the normally closed fixed spring 5 is suspended above the upper flange 21.

In this embodiment, one of the at least one vent groove is a first through groove 26 provided at the junction of the normally closed static spring insertion portion 25 and the upper flange 21; the first through groove 26 is arranged below the insertion groove 251 of the normally closed static spring insertion portion, one end of the first through groove 26 is led out of the normally closed static spring insertion portion 25 to the upper surface of the upper flange 21 in the space around the contact in the direction pointing to the normally open static spring insertion portion 24, and the other end of the first through groove 26 is led out of the normally closed static spring insertion portion 25 in the direction departing from the normally open static spring insertion portion 24; the other end of the first through groove 26 is further provided with a first groove 261 corresponding to the outer side wall of the upper flange 21, so that the other end of the first through groove 26 can communicate with the winding side space 72 through the first groove 261. The first through slots 26 allow air around the contacts to be quickly channeled through the first through slots 26 to the winding side space 72 when the contacts are disconnected from a normally open end. As shown in fig. 2, when the contact is opened from the normally open end, the arc S is elongated in the direction of the normally closed stationary spring and finally broken under the action of the magnetic field, regardless of whether the current flows from the normally open stationary spring into the movable spring or flows from the movable spring into the normally open stationary spring.

In this embodiment, a first rib 27 is further provided at a position on the front side of the notch corresponding to one end of the first through groove 26 above the upper flange 21 in the space around the contact, so as to prevent spatters generated during contact ablation from entering the first through groove 26, so that the first through groove 26 forms a clean area 73 where spatters cannot fall in a creepage path between the normally open contact and the normally closed contact, thereby improving withstand voltage between contacts after a test.

In the present embodiment, another of the at least one vent groove is a through hole 28 provided in the upper flange 21; the upper end of the through hole 28 is opened to the upper surface of the upper flange 21 in the space around the contact, and the lower end of the through hole 28 is opened to the winding side space 72.

In the present embodiment, in the case where there are the first rib 27 and the first through groove 26, the through hole 28 is provided at a position between the notch at one end of the first through groove 26 and the first rib 27.

In this embodiment, the through hole 28 is provided at a position near the edge of the upper flange 21. The through hole 28 is provided near the edge of the upper flange 21 in order to distance the position of the vent hole from the position of the enamel wire, thereby increasing the creepage distance between the contact and the enamel wire.

In this embodiment, an iron core mounting hole 211 is provided in the middle of the upper flange 21, an iron core 62 is fitted in the iron core mounting hole 211, and an iron core head 621, which is set as an iron core pole face, is exposed above the iron core mounting hole 211; the normally open static spring insertion portion 24 and the normally closed static spring insertion portion 25 are offset from one side of the upper flange 21 with respect to the iron core mounting hole 211; a retaining wall 212 is arranged between the contact surrounding space 71 and the iron core pole surface; another of the at least one ventilation groove is a second through groove 29 provided in the retaining wall 212 to communicate the contact surrounding space 71 with the iron core pole face surrounding space 74, and the second through groove 29 is provided at a position close to the normally closed static spring insertion portion 25. The periphery of the upper flange 21 is provided with a surrounding wall 213 corresponding to the periphery of the iron core mounting hole; the surrounding wall 213 is provided with a third through slot 214, one end of the third through slot 214 is communicated with the iron core pole face surrounding space 74, and the other end of the third through slot 214 is communicated with the outside of the surrounding wall 213; the other end of the third through groove 214 is further provided with a second groove 215 on the outer side wall corresponding to the upper flange 21, so that the other end of the third through groove 213 can communicate with the winding side space 72 through the second groove 215.

In this embodiment, in the bottom plate 1, at a position close to the inner side wall of the normally closed static spring insertion portion 25, a second protruding rib 11 is further provided in a downward protruding manner, so as to block splashes generated during contact ablation from adhering to the inner side wall of the normally closed static spring insertion portion 25, and a clean area 75 is formed in a creepage path between the normally open contact and the normally closed contact, where the splashes cannot fall, thereby improving the withstand voltage between the contacts after the test.

In this embodiment, there are three ventilation slots, the first is the first through slot 26 and the first groove 261, the second is the through hole 28, and the third is the second through slot 29, the third through slot 214 and the second groove 215; of course, only one of the vent grooves may be used, or two vent grooves may be used in any combination. In the present embodiment, the first through groove 26 and the first groove 261 are disposed in the normally closed static spring insertion portion 25, so that when the contact is disconnected from the normally open end, air around the contact can be quickly guided to the winding side space 72 through the first through groove 26; when the contact is required to be disconnected from the normally closed end, air around the contact is quickly guided to a winding side space through the first through groove, and the first through groove is required to be arranged in the normally open static spring insertion part; this embodiment is arranged because the load of the switching type NO (normally open end) is generally larger than that of the NC (normally closed end), the NO is more serious than that of the NC in the case of the contact splash, and the problem of insufficient NO withstand voltage after the test is solved, so that it is possible to better achieve the effect of quickly guiding the air around the contact to the winding side space 72 through the first through groove 26 when the contact is disconnected from the normally open end. The present embodiment adopts the structure that the through hole 28 is provided at a position between the notch at one end of the first through groove 26 and the first rib 27, and the second through groove 29 is provided at a position close to the normally closed static spring insertion portion 25, both in order to achieve quick diversion of air around the contact to the winding side space 72 through the first through groove 26 when the contact is disconnected from the normally open end; when the contact is required to be disconnected from the normally closed end, air around the contact is quickly guided to the winding side space, and the same structure is required to be arranged on the side of the normally open static spring inserting portion.

The invention relates to a subminiature high-voltage-resistant long-life clapper relay between contacts, which adopts the technical scheme that at least one vent groove corresponding to the moving direction of an electric arc when the contacts are disconnected is arranged on a coil frame 2, and the vent groove is communicated between a space 71 around the contacts and a winding side space 72 of the coil frame. The structure of the invention can utilize the air exchange between the contact surrounding space 71 and the winding side space 72 of the coil rack to reduce the air ionization degree of the contact surrounding space, thereby improving the service life of the product; contact arc removes the air that takes around the contact and flows to the wire winding side through the air channel fast, reduces the air ionization degree around the contact for the difficult electric durability of product is inefficacy, avoids adopting the volume around the sacrificial contact to reduce the air ionization degree among the prior art simultaneously, and then realizes the miniaturization.

The invention relates to a subminiature high-contact pressure-resistant long-life clapper relay, which adopts the technical scheme that a first through groove 26 is arranged at the joint of a normally closed static spring inserting part 25 and an upper flange 21; a first through groove 26 is arranged below the slot 251 of the normally closed static spring insertion portion 25, one end of the first through groove 26 is led out of the normally closed static spring insertion portion 25 to the upper surface of the upper flange 21 in the space around the contact in the direction pointing to the normally open static spring insertion portion 24, and the other end of the first through groove 26 is led out of the normally closed static spring insertion portion 25 in the direction departing from the normally open static spring insertion portion 24; the other end of the first through groove 26 is further provided with a first groove 261 corresponding to the outer side wall of the upper flange 21, so that the other end of the first through groove 26 can communicate with the winding side space 72 through the first groove 261. According to the structure, the first through groove 26 is designed on the normally closed static spring inserting side of the coil frame 2, so that air around the contact can be quickly guided to the winding side 72 through the first through groove 26 when the contact is disconnected from a normally open end. When the contact is disconnected from the normally open end, no matter whether the current flows from the normally open static spring end to the moving spring end (i.e. the switching contact side) or from the moving spring end (i.e. the switching contact side) to the normally open static spring end, the electric arc moves towards the normally closed static spring side under the influence of the magnetic field generated by the normally open static spring and is elongated until the arc is broken. Thus, the first through groove 26 is provided on the side of the arc moving direction, and penetrates through the air on the contact side (i.e., the contact surrounding space 71) and the enameled wire side (i.e., the wire winding side space 72), so that the degree of ionization on the contact side can be reduced, and the electrical life can be improved; and the first through groove 26 increases the creepage distance between the normally open contact and the normally closed contact, thereby improving the withstand voltage between the contacts after the test of the relay product.

The invention relates to a subminiature clapper relay with high voltage resistance and long service life between contacts, which adopts a structure that a first convex rib 27 is arranged on the upper surface of an upper flange 21 in the space around the contacts and at the front side position of a notch corresponding to one end of a first through groove 26. According to the structure of the invention, the first convex rib 27 can be used for preventing splashes generated during contact ablation from entering the first through groove 26, so that the first through groove 26 forms a clean area where the splashes cannot fall in a creepage path between the normally open contact and the normally closed contact, and the withstand voltage between the contacts after the test is improved.

The invention relates to a subminiature clapper type relay with high voltage resistance and long service life between contacts, which adopts the technical scheme that a through hole 28 is arranged on an upper flange 21; the upper end of the through hole 28 is connected to the upper surface of the upper flange 21 in the space around the contact, and the lower end of the through hole 28 is connected to the winding side space 72; the through hole 28 is provided at a position between the notch of one end of the first through groove 26 and the first rib 27. According to the structure of the invention, the through hole 28 is arranged on the coil frame 2, and the through hole is arranged on the normally closed static spring side and penetrates through the air on the contact side and the air on the enameled wire side, so that the ionization degree of the contact side is reduced, and the electric service life is prolonged.

The invention relates to a subminiature high-voltage-resistant long-life clapper relay between contacts, which adopts that a second through groove 29 for communicating a contact surrounding space 71 with a core pole surface surrounding space 74 is arranged on a retaining wall 212, and a third through groove 214 is arranged on a surrounding wall 213. Utilize the second to lead to groove 29 for contact side air link up with iron core side air, through third logical groove 214, make iron core side air link up with the air of enameled wire side again, thereby reduce contact side air ionization degree, improve experimental electric durability.

The invention relates to a subminiature high-contact pressure-resistant long-life clapper type relay, which adopts a base plate 1, wherein a second convex rib 11 is further arranged at the position close to the inner side wall of an insertion part of a normally closed static spring in a downward protruding mode. The structure of the invention can be used for preventing splashes generated during contact ablation from attaching to the inner side wall of the normally closed static spring insertion part when the splashes splash is generated, so as to form a clean area in which the splashes can not fall in a creepage path between the normally open contact and the normally closed contact, thereby improving the pressure resistance between the contacts after the test.

In the present invention, the terms in which the upper, lower, front, etc. refer to the orientation only indicate the relative positional relationship between the components or between the structures in the components, such as the upper flange and the lower flange of the bobbin refer to the upper and lower directions when the coil is in the use state (normally, the pins of the normally open static spring and the normally closed static spring are downward), the upper flange is below, and the lower flange is above, and when the coil is in the side use state, the upper flange may be at the left lower flange at the right, the upper flange may be at the right lower flange at the left, the upper flange may be at the front lower flange at the rear, and the upper flange may be at the lower flange at the front edge.

The foregoing is considered as illustrative of the preferred embodiments of the invention and is not to be construed as limiting the invention in any way. Although the present invention has been described with reference to the preferred embodiments, it is not intended to be limited thereto. Those skilled in the art can make many possible variations and modifications to the disclosed embodiments, or equivalent modifications, without departing from the scope of the disclosed embodiments. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention should fall within the protection scope of the technical scheme of the present invention, unless the technical spirit of the present invention departs from the content of the technical scheme of the present invention.