Auxiliary contact mechanism and relay comprising same

Abstract

The utility model relates to an auxiliary contact mechanism and a relay comprising the same, and the auxiliary contact mechanism comprises an outer cover, and a plurality of static contacts and a plurality of auxiliary leading-out terminals which are connected with the outer cover. The auxiliary contact mechanism further comprises an auxiliary reed fixing block connected with the outer cover, an auxiliary movable reed and an auxiliary static reed, the auxiliary movable reed and the auxiliary static reed are integrally connected with the auxiliary reed fixing block, and the length of the auxiliary movable reed is different from that of the auxiliary static reed. The ends, extending out of the auxiliary reed fixing block, of the auxiliary movable reed and the auxiliary static reed are respectively connected with an auxiliary leading-out terminal, and the other ends, extending into the auxiliary reed fixing block, of the auxiliary movable reed and the auxiliary static reed abut against each other or are far away from each other. The auxiliary reed fixing block is integrally connected with the auxiliary movable reed and the auxiliary static reed, so that the auxiliary movable reed and the auxiliary static reed are not assembled with the movable reed fixing block any more, and assembling procedures are greatly reduced.

Description

Technical Field

[0001] The utility model relates to the field of relays, in particular to an auxiliary contact mechanism and a relay comprising the mechanism. Background Art

[0002] A relay is an electrical control device. When the change in input quantity reaches the specified requirement, it causes a predetermined step change in the controlled quantity in the electrical output circuit. Relays have an interactive relationship between the control system and the controlled system. They are usually used in automated control circuits. In fact, they are an "automatic switch" that uses a small current to control a large current. Therefore, they play the role of automatic adjustment, safety protection, and circuit conversion in the circuit.

[0003] At present, due to the development of relay control technology, high-voltage DC relays are required to have auxiliary contacts. Auxiliary contacts are used to realize detection or monitoring functions in control circuits. However, traditional relays with auxiliary contacts have the following problems:

[0004] (1) The assembly and fixing steps of the auxiliary spring are complicated and have poor reliability.

[0005] (ii) The location of the auxiliary spring and the auxiliary terminal is easily affected by the arc generated when the main contacts are closed or opened, resulting in high voltage breakdown.

[0006] (3) After long-term use, the auxiliary spring will deform greatly and is prone to breakage and damage.

[0007] (iv) The auxiliary reed can be assembled with the auxiliary lead-out terminal only after the cavity is closed. If the assembly status needs to be checked, the assembly status can only be checked by destroying the structure or using X-rays, which results in high inspection costs. Summary of the invention

[0008] In view of the above-mentioned shortcomings of the prior art, an object of the present invention is to provide an auxiliary contact mechanism and a relay including the mechanism to solve one or more problems in the prior art.

[0009] To achieve the above purpose, the technical solution of the utility model is as follows:

[0010] The auxiliary contact mechanism comprises an outer cover, a plurality of static contacts connected to the outer cover, and a plurality of auxiliary lead-out terminals. The auxiliary contact mechanism also comprises an auxiliary spring fixing block connected to the outer cover, and an auxiliary moving spring and an auxiliary static spring integrally connected to the auxiliary spring fixing block. The length of the auxiliary moving spring is different from that of the auxiliary static spring. One end of the auxiliary moving spring and the auxiliary static spring extending out of the auxiliary spring fixing block are respectively connected to an auxiliary lead-out terminal, and the other ends of the auxiliary moving spring and the auxiliary static spring extending into the auxiliary spring fixing block are in contact with each other or away from each other.

[0011] Furthermore, the auxiliary spring fixing block includes a fixing block body and side portions extending along two ends of the fixing block body, and a limiting portion is further provided on the outer side of the fixing block body, and the limiting portion protrudes along the surface of the fixing block body.

[0012] Furthermore, a limiting groove which can cooperate with the limiting portion is provided on the inner side of the outer cover.

[0013] Correspondingly, the utility model also provides a relay, which includes the above-mentioned auxiliary contact mechanism, a driving device, a movable spring and an elastic member, one end of the elastic member abuts against a part of the anti-short circuit device, and the other end of the elastic member is connected to a part of the driving device.

[0014] Furthermore, the anti-short circuit device includes a first magnetic conductive block, and the first magnetic conductive block has first clamping blocks on both sides connected to the pushing device, and a first push rod is also arranged on the outer side of the first magnetic conductive block close to the auxiliary contact mechanism.

[0015] Furthermore, the anti-short circuit device includes a second magnetic conductive block and a push rod fixing block, the push rod fixing block is arranged on the outer side of the second magnetic conductive block close to the auxiliary contact mechanism, the two sides of the push rod fixing block are connected to another part of the pushing device through a second clamping block, and a second push rod is also arranged on the outer side of the push rod fixing block close to the auxiliary contact mechanism.

[0016] Furthermore, the anti-short circuit device includes a third magnetic conductive block, which covers a portion of the movable spring piece and is arranged close to another portion of the movable spring piece.

[0017] Furthermore, the third magnetic conductive block includes a magnetic conductive block body and side portions formed along a vertical direction at both ends of the magnetic conductive block body, the side portions are extended and formed in a direction close to the auxiliary contact mechanism, and a plurality of limit seats are also arranged on the outer side of the magnetic conductive block body.

[0018] Furthermore, the pushing device includes an insulating seat and a pushing rod connected to a part of the insulating seat, the other part of the insulating seat is connected to a fixing plate, and a first bayonet and a second bayonet are provided on the fixing plate.

[0019] Furthermore, a protrusion for matching with the elastic member is provided on the insulating seat, and an annular groove is provided on the insulating seat along the outer side of the protrusion.

[0020] Compared with the prior art, the beneficial technical effects of the utility model are as follows:

[0021] (i) The auxiliary spring fixing block is integrally connected with the auxiliary moving spring and the auxiliary static spring, so that the auxiliary moving spring and the auxiliary static spring are no longer assembled with the moving spring fixing block, which greatly reduces the assembly procedures. In addition, the length of the auxiliary moving spring is greater than that of the auxiliary static spring, and the first push rod and the second push rod are both located at the center of the auxiliary spring fixing block, so that the auxiliary moving spring has a small deformation after being warped up and is not easy to break or damage.

[0022] (ii) The auxiliary moving spring lead-out terminals are located at both ends of the auxiliary spring fixing block and are connected to each auxiliary moving spring. They are far away from the static contact point and are not easily affected by the arc, thus avoiding breakdown by high voltage.

[0023] (iii) Providing an annular groove and a second boss on the insulating seat can facilitate the assembly of the elastic member, prevent the elastic member from detaching from the insulating seat, and improve the assembly stability of the elastic member.

[0024] (iv) Furthermore, a limiting portion is provided on the outer side of the auxiliary spring fixing block, and a limiting groove is provided on the inner side of the outer cover, thereby ensuring a reliable connection between the auxiliary spring fixing block and the outer cover.

[0025] (V) Furthermore, the present invention can conveniently and intuitively visually check the contact state and assembly state of the auxiliary lead-out terminal inside the outer cover and the auxiliary moving spring piece and the auxiliary static spring piece before assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 The schematic diagram of the structure of the auxiliary contact mechanism of the embodiment of the utility model and the relay including the mechanism is shown.

[0027] Figure 2 The invention shows an auxiliary contact mechanism according to an embodiment of the utility model and a schematic diagram of the connection between a fixing plate and an insulating seat in a relay including the mechanism.

[0028] Figure 3 The schematic diagram of the structure of the auxiliary contact mechanism of the embodiment of the utility model and the lower magnetic conductive block in the relay including the mechanism is shown.

[0029] Figure 4 The schematic diagram of the structure of the auxiliary contact mechanism of the embodiment of the utility model and the outer cover of the relay including the mechanism is shown.

[0030] Figure 5 The auxiliary contact mechanism of the embodiment of the utility model and the structural schematic diagram of the connection between the auxiliary spring fixing block and the auxiliary moving spring and the auxiliary static spring in the relay including the mechanism are shown.

[0031] Figure 6 A schematic diagram of an auxiliary contact mechanism and a relay including the mechanism in a normally closed state according to a first embodiment of the utility model is shown.

[0032] Figure 7A schematic diagram of the auxiliary contact mechanism of the second embodiment of the utility model and a relay including the mechanism in a normally open state is shown.

[0033] Figure 8 A schematic diagram of the auxiliary contact mechanism of the third embodiment of the utility model and a relay including the mechanism in a normally open state is shown.

[0034] Fig. 9 A schematic diagram of the auxiliary contact mechanism of the fourth embodiment of the utility model and a relay including the mechanism in a normally open state is shown.

[0035] The reference numerals in the accompanying drawings are: 100, auxiliary lead terminal; 101, static contact; 102, outer cover; 1020, limit groove; 103, frame piece; 200, limit portion; 201, auxiliary spring fixing block; 2010, fixing block body; 2011, first side portion; 202, auxiliary moving spring; 203, auxiliary static spring; 300, first push rod; 301, first magnetic conductive block; 3010, first clamping block; 302, fixing piece; 30 20. First bayonet; 3021. Second bayonet; 303. Moving spring; 304. Elastic member; 305. Insulating seat; 3050. Ring groove; 3051. First protrusion; 306. Push rod; 307. Push rod fixing block; 3070. Second bayonet; 308. Second push rod; 309. Second magnetic conductive block; 310. Third magnetic conductive block; 3100. Magnetic conductive block body; 3101. Second side portion; 3102. Limit seat. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solution and advantages of the utility model clearer, the auxiliary contact mechanism and the relay containing the mechanism proposed by the utility model are further described in detail in combination with the drawings and specific implementation methods. According to the following description, the advantages and features of the utility model will be clearer. It should be noted that the drawings are in a very simplified form and use non-precise proportions, which are only used to conveniently and clearly assist in explaining the purpose of the implementation method of the utility model. In order to make the purpose, features and advantages of the utility model more obvious and easy to understand, please refer to the drawings. It should be noted that the structure, proportion, size, etc. illustrated in the drawings of this specification are only used to match the content disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the utility model, so they have no technical substantive significance. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effect that the utility model can produce and the purpose that can be achieved, should still fall within the scope of the technical content disclosed by the utility model.

[0037] Embodiment 1:

[0038] Please refer to Figure 1The auxiliary contact mechanism includes an outer cover 102 and a plurality of static contacts 101 connected to the outer cover 102 and a plurality of auxiliary lead-out terminals 100, wherein the static contacts 101 are preferably two, and the two static contacts 101 are symmetrically arranged with the central axis of the outer cover 102 as the center, and the auxiliary lead-out terminals 100 are also preferably two, and the two auxiliary lead-out terminals 100 are located between adjacent static contacts 101.

[0039] For further information, please refer to Figure 1 and Figure 5 The auxiliary contact mechanism also includes an auxiliary spring fixing block 201 connected to the inner side of the outer cover 102, and an auxiliary moving spring 202 and an auxiliary static spring 203 integrally connected to the auxiliary spring fixing block 201. The length of the auxiliary moving spring 202 is different from the length of the auxiliary static spring 203. In the first embodiment of the utility model, the length of the auxiliary moving spring 202 is greater than the length of the auxiliary moving spring 202. One end of the auxiliary moving spring 202 and the auxiliary static spring 203 extending out of the auxiliary spring fixing block 201 is respectively connected to an auxiliary lead-out terminal 100, and the other ends of the auxiliary moving spring 202 and the auxiliary static spring 203 extending into the auxiliary spring fixing block 201 abut against each other or move away from each other to realize the on-off of the auxiliary circuit.

[0040] For further information, please continue to refer to Figure 1 and Figure 5 , the fixing block body 2010 and the first side portions 2011 extending along the two ends of the fixing block body 2010, specifically, the first side portions 2011 are respectively formed at the left and right ends of the fixing block body 2010, and the first side portions 2011 and the fixing block body 2010 are perpendicular to each other, and a limiting portion 200 is also provided on the outer side of the fixing block body 2010, and the limiting portion 200 protrudes along the surface of the fixing block body 2010. Preferably, the limiting portion 200 is square, in order to realize the connection between the auxiliary spring fixing block 201 and the outer cover 102, please refer to Figure 4 A limiting groove 1020 that can cooperate with the limiting part 200 is provided on the inner side of the outer cover 102. The limiting groove 1020 cooperates with the limiting part 200, so that the limiting part 200 of the auxiliary spring fixing block 201 can be inserted into the limiting groove 1020 and fixed by adhesive material.

[0041] Of course, in other embodiments of the present invention, a groove may be provided on the outer side of the auxiliary spring fixing block 201, and a limiting protrusion may be provided on the inner side of the outer cover 102, and the present invention does not make any further limitation on this.

[0042] Accordingly, please refer to Figure 6The utility model also provides a relay, the relay includes the auxiliary contact mechanism, a push device, a moving spring 303 and an elastic member 304, one end of the elastic member 304 abuts against a part of the anti-short circuit device, and the other end of the elastic member 304 is connected to a part of the push device. Preferably, in the relay described in the first embodiment, the elastic member 304 is preferably a spring. Further, it also includes a frame sheet 103, the frame sheet 103 is connected to the bottom of the outer cover 102, and the center of the frame sheet 103 is penetrated by the push device.

[0043] For further information, please refer to Figure 6 In the first embodiment, the anti-short circuit device includes a first magnetic conductive block 301, which is arranged on the upper surface of the movable spring piece 303. The first magnetic conductive block 301 has first clamping blocks 3010 on both sides where it is connected to the pushing device. A first push rod 300 is also arranged on the outer side of the first magnetic conductive block 301 close to the auxiliary contact mechanism. Preferably, in the first embodiment, the outer side of the first magnetic conductive block 301 close to the auxiliary contact mechanism is the upper surface of the first magnetic conductive block 301, and the above-mentioned first clamping blocks 3010 are respectively formed on both sides of the short sides of the first magnetic conductive block 301, and are used to contact the auxiliary movable spring piece 202 through the above-mentioned first push rod 300.

[0044] Furthermore, the anti-short circuit device also includes a third magnetic conductive block 310, which covers a portion of the movable spring piece 303 and is arranged close to the lower surface of the movable spring piece 303. Specifically, the third magnetic conductive block 310 includes a magnetic conductive block body 3100 and a second side portion 3101 formed upwardly in a vertical direction at both ends of the magnetic conductive block body 3100, and the second side portion 3101 is extended and formed in a direction close to the auxiliary contact mechanism, so that the third magnetic conductive block 310 can cover the lower surface and both sides of the movable spring piece 303. A plurality of limit seats 3102 are also arranged on the outer side of the magnetic conductive block body 3100. In the first embodiment, the limit seats 3102 are preferably four, and the outer contour surrounded by the four limit seats 3102 is located within the inner diameter range of the elastic member 304, thereby ensuring that the upper end of the elastic member 304 can be positioned.

[0045] Please refer to Figure 1 , Figure 2 and Figure 6 The pushing device includes an insulating seat 305 and a pushing rod 306 connected to the lower half of the insulating seat 305. The upper half of the insulating seat 305 is connected to a pair of fixing plates 302. A first bayonet 3020 is opened on each of the fixing plates 302. The first bayonet 3020 is used to be connected with the first clamping block 3010.

[0046] For further information, please continue to refer to Figure 6In order to ensure the connection stability between the elastic member 304 and the insulating seat 305, a protrusion 3051 is further provided on the insulating seat 305. The outer diameter of the protrusion 3051 is smaller than the inner diameter of the elastic member 304, so that the elastic member 304 can be sleeved on the protrusion 3051. At the same time, in order to ensure the connection stability of the elastic member 304, an annular groove 3050 is further provided on the insulating seat 305 around the outer side of the protrusion 3051. The annular groove 3050 can conveniently embed the elastic member 304 to prevent it from falling off the insulating seat 305.

[0047] Please continue to refer to Figure 6 , the auxiliary moving spring 202 and the auxiliary static spring 203 are away from each other, and the circuit breaker is in a normally open state. When the first push rod 300 contacts the auxiliary moving spring 202, the auxiliary moving spring 202 will be tilted up and contact the auxiliary static spring 203, thereby realizing the auxiliary circuit conduction, otherwise the auxiliary circuit is not conducted.

[0048] Embodiment 2:

[0049] Please refer to Figure 7 , the second embodiment has the same structure as the first embodiment, except that in the second embodiment, there is a gap between the first push rod 300 and the auxiliary moving spring 202, and the auxiliary moving spring 202 and the auxiliary static spring 203 are engaged with each other. At this time, the auxiliary circuit is turned on and the relay is in the disconnected state. When the relay is closed, the push rod 306 is forced to drive the insulating seat 305, the fixing plate 302, the first magnetic block 301 and the first push rod 300 to move upward and contact the auxiliary moving spring 202. The auxiliary moving spring 202 is forced to tilt upward and separate from the auxiliary static spring 203, so that the auxiliary circuit is disconnected, and the moving spring 303 contacts the static contact 101, so that the main circuit is turned on.

[0050] Embodiment three:

[0051] Please refer to Figure 8 , most of the structures and working processes of the third embodiment are the same as those of the first embodiment, except that a second bayonet 3021 is further provided on each fixing plate 302 in the insulating seat 305, and the first magnetic conductive block 301 is replaced by a second magnetic conductive block 309 in the third embodiment. Specifically, a top rod fixing block 307 is further provided on the outer side of the second magnetic conductive block 309 near the auxiliary contact mechanism, and a second top rod 308 is provided on the upper surface of the top rod fixing block 307, and the two sides of the top rod fixing block 307 are respectively extended toward the insulating seat 305, and a second clamping block 3070 is further provided inside the side of the top rod fixing block 307, and the second clamping block 3070 can be clamped with the second bayonet 3021, thereby realizing the connection between the top rod fixing block 307 and the fixing plate 302.

[0052] Embodiment 4

[0053] Please refer to Fig. 9 The fourth embodiment has the same structure as the third embodiment, except that the auxiliary movable spring 202 and the auxiliary static spring 203 are far from each other and are in a normally open state. When the first push rod 300 contacts the auxiliary movable spring 202, the auxiliary movable spring 202 will be tilted upward and contact the auxiliary static spring 203, thereby achieving the auxiliary circuit conduction, otherwise the auxiliary circuit will be disconnected.

[0054] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0055] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. An auxiliary contact mechanism, comprising an outer cover, a plurality of static contacts connected to the outer cover, and a plurality of auxiliary lead terminals, characterized in that: The auxiliary contact mechanism also includes an auxiliary spring fixing block connected to the outer cover, and an auxiliary moving spring and an auxiliary static spring integrally connected to the auxiliary spring fixing block. The length of the auxiliary moving spring is different from that of the auxiliary static spring. One end of the auxiliary moving spring and the auxiliary static spring extending out of the auxiliary spring fixing block is respectively connected to an auxiliary lead-out terminal, and the other ends of the auxiliary moving spring and the auxiliary static spring extending into the auxiliary spring fixing block abut against or move away from each other.

2. The auxiliary contact mechanism according to claim 1, characterized in that: The auxiliary spring fixing block comprises a fixing block body and side parts extending along two ends of the fixing block body. A limiting part is also arranged on the outer side of the fixing block body, and the limiting part protrudes along the surface of the fixing block body.

3. The auxiliary contact mechanism according to claim 2, characterized in that: The inner side of the outer cover is provided with a limiting groove which can be matched with the limiting part.

4. A relay, characterized in that: The relay comprises the auxiliary contact mechanism as claimed in any one of claims 1 to 3, a driving device, a movable spring and an elastic member, one end of the elastic member abuts against a part of the anti-short circuit device, and the other end of the elastic member is connected to a part of the driving device.

5. A relay as claimed in claim 4, characterized in that: The anti-short circuit device comprises a first magnetic conductive block, and the first magnetic conductive block has first clamping blocks on both sides connected to the pushing device, and a first push rod is also arranged on the outer side of the first magnetic conductive block close to the auxiliary contact mechanism.

6. A relay as claimed in claim 4, characterized in that: The anti-short circuit device includes a second magnetic conductive block and a push rod fixing block. The push rod fixing block is arranged on the outer side of the second magnetic conductive block close to the auxiliary contact mechanism. The two sides of the push rod fixing block are connected to the other part of the pushing device through a second clamping block. A second push rod is also arranged on the outer side of the push rod fixing block close to the auxiliary contact mechanism.

7. A relay as claimed in claim 4, characterized in that: The anti-short circuit device comprises a third magnetic conductive block, which covers a portion of the movable spring piece and is arranged close to another portion of the movable spring piece.

8. A relay as claimed in claim 7, characterized in that: The third magnetic conductive block includes a magnetic conductive block body and side portions formed along a vertical direction at both ends of the magnetic conductive block body, the side portions are extended and formed in a direction close to the auxiliary contact mechanism, and a plurality of limit seats are also arranged on the outer side of the magnetic conductive block body.

9. A relay as claimed in claim 4, characterized in that: The pushing device comprises an insulating seat and a pushing rod connected to a part of the insulating seat, the other part of the insulating seat is connected to a fixing plate, and a first bayonet and a second bayonet are provided on the fixing plate.

10. A relay as claimed in claim 9, characterized in that: A protrusion for matching with the elastic member is also arranged on the insulating seat, and an annular groove is also arranged on the insulating seat along the outer side of the protrusion.

Images