Relay with auxiliary contact group

Abstract

The invention discloses a relay with an auxiliary contact group, and relates to the technical field of relays. The relay comprises a coil assembly, an armature assembly, a push sheet, a main contact group and an auxiliary contact group. A claw-shaped structure with a downward opening is arranged at the tail end of an armature supporting arm of the armature assembly, and two side walls extend out of one side of the claw-shaped structure to form a groove-shaped structure. The claw-shaped structure drives the pushing sheet to control the main contact group, and the groove-shaped structure is linked with the auxiliary contact group, so that a single support arm can synchronously control multiple groups of contacts. An arc-shaped boss is arranged in the claw-shaped structure to be matched with the pushing piece to reduce abrasion, and the tail end buckle structure facilitates preassembling of the pushing piece. The problems that main and auxiliary contacts are poor in synchronism and a traditional armature cannot be linked with multiple groups of contacts are solved, synchronism and reliability are remarkably improved, and the assembly process is simplified.

Description

Technical Field

[0001] This invention belongs to the field of relay technology, and specifically relates to a relay with an auxiliary contact group. Background Technology

[0002] Traditional relays with auxiliary contact groups typically include a coil assembly, an armature assembly, a drive plate, a main contact group, and an auxiliary contact group. The armature assembly consists of an armature body and a rod-shaped armature support extending to one side. The opening and closing of the main contact group is achieved by the armature support driving the drive plate: the armature support is inserted into a slot-shaped structure at one end of the drive plate, directly controlling the movement of the main contacts.

[0003] The control of the auxiliary contact assembly relies on an additional structure on the armature body, specifically two protrusions extending from one side of the armature body, forming a slot-shaped structure between them. This slot-shaped structure controls the movement of the auxiliary contact by driving the extension of the auxiliary moving spring. However, this solution has the following drawbacks: Poor synchronization: There is a significant difference between the groove structure on the armature body and the movement stroke of the rod-shaped armature support, which causes the auxiliary contact and the main contact to be unable to break or close synchronously.

[0004] Insufficient reliability: The linear motion stroke of the slot structure is too short, which cannot provide sufficient opening distance (contact separation distance) and overtravel (continuous compression after contact closure) for the auxiliary contacts, directly affecting the electrical life and contact stability of the auxiliary contacts.

[0005] Structural limitations: A single armature support can only control one set of main contacts, and the remaining contact sets need to rely on additional linkage mechanisms (such as slotted structures), making it difficult to achieve unified driving of multiple sets of contacts, and the synchronization problem cannot be completely solved.

[0006] Therefore, there is an urgent need to provide a new type of relay to solve the above-mentioned technical problems. Summary of the Invention

[0007] The purpose of this invention is to provide a relay with an auxiliary contact group, which integrates the claw-shaped structure at the end of the armature support arm with the slot-shaped structure formed by the side wall, so that a single armature support arm can simultaneously drive the main contact group and the auxiliary contact group. This fundamentally eliminates the synchronization problem caused by the difference in the stroke of the armature support and the slot-shaped structure of the armature body in the traditional solution, thereby solving at least one of the technical problems mentioned in the background art.

[0008] To solve the above-mentioned technical problems, the present invention is implemented as follows: This invention provides a relay with an auxiliary contact group, including a coil assembly, an armature assembly, a push plate, a main contact group, and an auxiliary contact group; the armature assembly includes an armature assembly body and an armature support arm extending to one side; The armature arm has a downward-opening claw-shaped structure at its end; One or both sides of the claw-shaped structure extend to form a sidewall, and the sidewall constitutes a groove-shaped structure; The claw-shaped structure drives the pusher piece to control the main contact group to break / close; The slotted structure directly drives the extension piece of the auxiliary contact group to control the opening / closing of the auxiliary contact group.

[0009] Optionally, the groove structure is disposed on one or both sides of the claw structure for linkage of one or two sets of auxiliary contact groups.

[0010] Optionally, one end of the pusher plate is a rod-shaped structure with its sidewall perpendicular to the direction of movement of the pusher plate; the other end of the pusher plate is connected to the main contact group.

[0011] Optionally, the claw-shaped structure has a pair of arc-shaped protrusions on its inner side. The arc-shaped protrusions cooperate with the sidewall of the rod-shaped structure so that when the claw-shaped structure drives the push plate, the force direction of the rod-shaped structure is consistent with the movement direction of the push plate.

[0012] Optionally, the claw-shaped structure has a snap-fit ​​structure at its end, and the rod-shaped structure of the push plate is pre-installed in the claw-shaped structure and limited by the snap-fit ​​structure.

[0013] Optionally, the armature support arm synchronously controls the main contact group and at least one auxiliary contact group through the claw-shaped structure and the slot-shaped structure.

[0014] Optionally, the snap-fit ​​structure is used to prevent the push piece from falling off during assembly.

[0015] Optionally, a movable gap is provided between the groove structure and the extension piece of the auxiliary contact group to compensate for the difference in opening distance and overtravel between the main and auxiliary contacts.

[0016] Optionally, the opening width of the groove structure increases from near the armature shaft to away from the armature shaft, so that the extension piece is subjected to uniform force when the auxiliary contact breaks / closes.

[0017] Optionally, the claw-shaped structure covers both sides of the rod-shaped structure to form a double-sided limiting fit.

[0018] Compared with the prior art, the advantages of this invention are as follows: (1) The present invention integrates the claw-shaped structure at the end of the armature support arm with the groove-shaped structure formed by the side wall, so that a single armature support arm can drive the main contact group and the auxiliary contact group at the same time, thereby fundamentally eliminating the synchronization problem caused by the difference between the groove-shaped structure of the armature body and the armature support movement stroke in the traditional solution.

[0019] (2) The optimized design of the slot structure of the present invention extends the linear stroke of the auxiliary contact, providing sufficient opening distance and overtravel for the main contact and the auxiliary contact, thus solving the reliability defects caused by insufficient stroke of the auxiliary contact in the background art.

[0020] (3) The claw-shaped structure of the present invention can be extended to the two sides to form a slotted structure (single or double sides), so as to realize the linkage of two or more contact groups controlled by a single armature support arm, breaking through the limitation of one armature and one contact in the traditional scheme; the snap-fit ​​design at the end of the claw-shaped structure allows the push plate to be pre-installed and fixed, reducing assembly process and improving production efficiency.

[0021] (4) The claw-shaped structure of the present invention is provided with a pair of arc-shaped bosses inside, which cooperate with the vertical sidewall of the push plate rod-shaped structure to ensure that the force direction of the push plate is always consistent with its movement direction during the driving process, effectively reducing the movement resistance and component wear.

[0022] (5) The composite armature assembly (claw-shaped + slot-shaped structure) of the present invention adopts an integrated design that is easy to form, avoiding additional linkage parts and reducing material and processing costs. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein: Figure 1 This is a schematic diagram of the overall structure of the relay with auxiliary contact group provided by the present invention; Figure 2 A three-dimensional structural schematic diagram of the armature assembly provided by the present invention; Figure 3 This is a schematic diagram of the assembly structure of the armature assembly and the push plate provided by the present invention; Figure 4 A three-dimensional structural diagram of the push plate provided by the present invention. Detailed Implementation

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] The terms "first," "second," etc., used in the specification and claims of this invention are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of the invention can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0026] Please see Figure 1 As shown, this embodiment of the invention provides a relay with an auxiliary contact group, including a coil assembly 1, an armature assembly 2, a push plate 3, a main contact group 4, and an auxiliary contact group 5.

[0027] The coil assembly 1 is disposed on the side of the armature assembly 2 and drives the armature assembly 2 to rotate.

[0028] Combined Figure 2 and Figure 3 As shown, the armature assembly 2 includes an armature assembly body 21 and an armature support arm 22 extending to one side.

[0029] The armature support arm 22 has a downward-opening claw-shaped structure 23 at its end. One or both sides of the claw-shaped structure 23 extend to form a sidewall 231, which constitutes a groove-shaped structure.

[0030] The claw-shaped structure 23 drives the pusher piece 3 to control the opening / closing of the main contact group 4.

[0031] The slotted structure directly drives the extension piece 51 of the auxiliary contact group 5 to control the opening / closing of the auxiliary contact.

[0032] In one specific embodiment, an movable gap is provided between the groove structure and the extension piece 51 of the auxiliary contact group 5 to compensate for the difference in opening distance and overtravel between the main and auxiliary contacts.

[0033] By integrating the claw-shaped structure 23 at the end of the armature support arm 22 with the groove-shaped structure formed by the side wall 231, a single armature support arm 22 can simultaneously drive the main contact group 4 and the auxiliary contact group 5, fundamentally eliminating the synchronization problem caused by the difference in the stroke of the armature support groove structure and the armature support in the traditional scheme.

[0034] The groove structure is set on one or both sides of the claw structure 23 to link one or two sets of auxiliary contact groups 5, thereby breaking through the limitation of one armature and one contact in the traditional scheme.

[0035] Furthermore, the opening width of the groove structure increases from near the armature shaft to away from the armature shaft, so that the extension piece is subjected to uniform force when the auxiliary contact breaks / closes.

[0036] This slotted structure extends the linear travel of the auxiliary contact group 5, providing ample opening distance and overtravel for both the main and auxiliary contacts. Simultaneously, the claw-shaped structure 23 and the slotted structure are integrated into a single, easily moldable design, avoiding additional linkage components and reducing material and processing costs.

[0037] Combined Figure 3 and Figure 4 As shown, one end of the push plate 3 is a rod-shaped structure 31, and its sidewall is perpendicular to the direction of movement of the push plate 3; the other end of the push plate 3 is connected to the main contact group 4.

[0038] The claw-shaped structure 23 has a pair of arc-shaped protrusions 232 on its inner side. The arc-shaped protrusions 232 cooperate with the side wall of the rod-shaped structure 31 so that when the claw-shaped structure 23 drives the push plate 3, the force direction of the rod-shaped structure 31 is consistent with the movement direction of the push plate 3. This can effectively reduce the movement resistance and component wear.

[0039] Furthermore, the claw-shaped structure 23 covers both sides of the rod-shaped structure 31, forming a double-sided limiting fit.

[0040] The claw-shaped structure 23 has a snap-fit ​​structure 233 at its end to prevent the push piece 3 from falling off during assembly. The rod-shaped structure 31 of the push piece 3 is pre-installed in the claw-shaped structure 23 and is limited by the snap-fit ​​structure 233. The push piece 3 is pre-installed and fixed, which can reduce assembly steps and improve production efficiency.

[0041] The armature support arm 22 synchronously controls the main contact group 4 and at least one auxiliary contact group 5 through the claw-shaped structure 23 and the slot-shaped structure.

[0042] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0043] Furthermore, it should be noted that the scope of the methods and systems in the embodiments of the present invention is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. In addition, features described with reference to certain examples may be combined in other examples.

[0044] The embodiments of the present invention have been described above with reference to the accompanying drawings. However, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the present invention without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of the present invention.

Claims

1. A relay with an auxiliary contact group, comprising a coil assembly, an armature assembly, a push plate, a main contact group, and an auxiliary contact group; the armature assembly comprising an armature assembly body and an armature support arm extending to one side; characterized in that: The armature arm has a downward-opening claw-shaped structure at its end; One or both sides of the claw-shaped structure extend to form a sidewall, and the sidewall constitutes a groove-shaped structure. The claw-shaped structure drives the pusher piece to control the main contact group to break / close; The slotted structure directly drives the extension piece of the auxiliary contact group to control the opening / closing of the auxiliary contact group.

2. The relay with auxiliary contact group according to claim 1, characterized in that, The groove-shaped structure is disposed on one or both sides of the claw-shaped structure, and is used to link one or two sets of auxiliary contact groups.

3. The relay with auxiliary contact group according to claim 1, characterized in that, One end of the pusher plate is a rod-shaped structure with its sidewall perpendicular to the direction of movement of the pusher plate; the other end of the pusher plate is connected to the main contact group.

4. The relay with auxiliary contact group according to claim 3, characterized in that, The claw-shaped structure has a pair of arc-shaped protrusions on its inner side. The arc-shaped protrusions cooperate with the side wall of the rod-shaped structure so that when the claw-shaped structure drives the push plate, the force direction of the rod-shaped structure is consistent with the movement direction of the push plate.

5. The relay with auxiliary contact group according to claim 1, characterized in that, The claw-shaped structure has a snap-fit ​​structure at its end, and the rod-shaped structure of the push plate is pre-installed in the claw-shaped structure and limited by the snap-fit ​​structure.

6. The relay with auxiliary contact group according to claim 1, characterized in that, The armature support arm synchronously controls the main contact group and at least one auxiliary contact group through the claw-shaped structure and the slot-shaped structure.

7. The relay with auxiliary contact group according to claim 5, characterized in that, The snap-fit ​​structure is used to prevent the push plate from falling off during assembly.

8. The relay with auxiliary contact group according to claim 1, characterized in that, A movable gap is provided between the groove structure and the extension piece of the auxiliary contact group to compensate for the difference in opening distance and overtravel between the main and auxiliary contacts.

9. The relay with auxiliary contact group according to claim 1, characterized in that, The opening width of the groove structure increases from near the armature shaft to away from the armature shaft, so that the extension piece is subjected to uniform force when the auxiliary contact breaks / closes.

10. The relay with auxiliary contact group according to claim 3, characterized in that, The claw-shaped structure covers both sides of the rod-shaped structure, forming a double-sided limiting fit.

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