T-shaped contact system and relay

Abstract

The application provides a T-shaped contact system and a relay with the same, which comprises a static contact mechanism and a dynamic contact mechanism corresponding to the static contact mechanism; the static contact mechanism comprises a base and an even number of first static contact assemblies and second static contact assemblies fixed on both sides of the base; the first static contact assemblies and the second static contact assemblies each comprise a pin and a static contact, and the pin is arranged on the base; the first static contact assembly further comprises a first static contact piece, the first static contact piece comprises a connecting part and a leading-out part which are perpendicular to each other, the lower end of the connecting part is fixedly connected with the pin, the leading-out part is horizontally arranged on the upper end of the connecting part, and the static contact is arranged on the leading-out part; wherein the first static contact assemblies are arranged in pairs, the leading-out parts of the two first static contact assemblies in each pair are arranged away from each other, so that the first static contact assemblies in each pair substantially form a T-shaped structure. In this way, the process assembly allowance is increased, and the operation difficulty is reduced.

Description

Technical Field

[0001] This invention relates to the technical field of relays, and more particularly to the field of balanced force magnetic latching relays; more specifically, it relates to a T-shaped contact system and a relay. Background Technology

[0002] A balanced force magnetic latching relay is a bistable relay that retains the relay in an energized state using the magnetic force of a magnet after de-energization. A typical structure of a 1 cubic inch balanced force magnetic latching relay in the prior art includes a magnetic circuit section, an armature section, and a contact section. The magnetic circuit section and the armature section are fixedly connected by a shaft bracket, while the magnetic circuit section and the contact section are fixedly connected by a support bracket.

[0003] To improve the breaking capacity of the contacts, the contact part usually adopts a structure with four normally open contacts. However, the existing relays are relatively small in size, so assembling four normally open contacts in the small internal space of the relay is difficult, especially when welding the stationary contacts to the pins. Because the stationary contacts are irregularly shaped and have a small spacing, they will interfere with each other during assembly, resulting in insufficient process margin, high operational difficulty, poor assembly processability, and frequent cases of incorrect or missing parts. Finally, there is a risk of arcing and short-circuiting failure due to the small gap between the contact groups when breaking under a specified load. Summary of the Invention

[0004] Therefore, the present invention provides a T-shaped contact system and relay, which can increase the process assembly allowance and reduce the difficulty of operation.

[0005] To achieve the above objectives, the technical solution provided by the present invention is as follows:

[0006] A T-shaped contact system includes a stationary contact mechanism and a corresponding moving contact mechanism. The stationary contact mechanism includes a base and an even number of first and second stationary contact assemblies fixedly disposed on both sides of the base. Each first and second stationary contact assembly includes a pin and a stationary contact, with the pin passing through the base. The first stationary contact assembly further includes a first stationary contact piece, which includes a support portion and a lead-out portion perpendicular to each other. The lead-out portion is laterally disposed at the upper end of the support portion, and the stationary contact is located on the lead-out portion. The first stationary contact assemblies are arranged in pairs, with the support portions of the two first stationary contact assemblies in each pair close to each other and the lead-out portions far apart, so that the two first stationary contact assemblies in each pair roughly form a "T" structure.

[0007] Furthermore, the number of the first stationary contact assembly and the second stationary contact assembly is four, and the number of the moving contact mechanism corresponds accordingly.

[0008] Furthermore, it also includes an arc-blocking cover, which is located on the side where the first stationary contact assembly is located and covers the outer periphery of the first stationary contact assembly. The arc-blocking cover has a partition plate between the two sets of first stationary contact assemblies, so that the arc-blocking cover forms a partition space on both sides of the partition plate to accommodate the two sets of first stationary contact assemblies respectively.

[0009] Furthermore, the arc-blocking cover includes a panel, side plates on both sides of the panel, and a mounting plate on the bottom side. The mounting plate has a notch for accommodating pins. The partition plate is located between the two side plates. The stationary contacts of the two first stationary contact assemblies located in the partition space are separated by their own support portions, so that the two stationary contacts are separated from each other.

[0010] Furthermore, the first stationary contact also includes a connecting portion, which is located at the lower end of the support portion and is perpendicular to the support portion. At the same time, the connecting portion is perpendicular to the lead-out portion, and the first stationary contact is fixedly connected to the pin through the connecting portion.

[0011] Furthermore, the working surfaces of the stationary contacts of the first stationary contact assembly and the second stationary contact assembly face opposite directions, with the working surface of the stationary contact of the first stationary contact assembly facing downwards and the working surface of the stationary contact of the second stationary contact assembly facing upwards; the moving contacts of the moving contact mechanism correspond to these directions respectively.

[0012] Furthermore, the second stationary contact assembly includes a second stationary contact piece, which is a planar body. The stationary contact is disposed on the upper or lower surface of the second stationary contact piece, and one end of the second stationary contact piece extends downward to form a mounting portion that is fixedly connected to the pin.

[0013] Furthermore, the moving contact mechanism includes a first moving contact assembly and a second moving contact assembly corresponding to the first stationary contact assembly and the second stationary contact assembly, respectively. Both the first moving contact assembly and the second moving contact assembly include a moving spring and a moving contact disposed on the moving spring. The working surfaces of the moving contacts of the first moving contact assembly and the second moving contact assembly are oriented in opposite directions.

[0014] Furthermore, the movable spring has a U-shaped structure, including a first arm and a second arm arranged opposite to each other, and the movable contact is located on the first arm and the second arm respectively. The contact working surface of the movable contact of the first movable contact assembly faces upward, and the contact working surface of the movable contact of the second movable contact assembly faces downward.

[0015] A relay includes an outer casing, an electromagnetic system, and a contact system. The contact system is a T-shaped contact system as described above. The electromagnetic system and the contact system are disposed inside the outer casing, and the moving contact mechanism of the contact system is connected to the electromagnetic system.

[0016] The technical solution provided by this invention has the following beneficial effects:

[0017] In the T-shaped contact system of the present invention, the support part of the first stationary contact assembly is the part connected to the pin. The support parts of the two first stationary contact assemblies in each group are close to each other, which facilitates the fixed connection between them and the pin from both sides. Moreover, the distance between the support parts of the two groups of first stationary contact assemblies is large enough, which is more conducive to operation. Therefore, the present invention meets the requirements of the original four sets of normally open functions, and increases the process assembly margin and reduces the difficulty of operation without increasing the size of the relay.

[0018] Meanwhile, the T-shaped contact system separates the first stationary contact components of each group through their own support; and in conjunction with the arc shield, it also separates the first stationary contact components of adjacent groups, achieving isolation between each first contact group and effectively solving the technical problem of arc interference between contact groups. Attached Figure Description

[0019] Figure 1 The diagram shown is a structural schematic of the T-shaped contact system of the present invention;

[0020] Figure 2 The diagram shown is a structural schematic of the stationary contact mechanism of the present invention.

[0021] Figure 3 The image shown is a side view of the stationary contact mechanism of the present invention. Figure 1 ;

[0022] Figure 4 The image shown is a side view of the stationary contact mechanism of the present invention from another angle. Figure 1 ;

[0023] Figure 5 The diagram shown is a structural schematic of the first moving contact assembly of the present invention;

[0024] Figure 6 The diagram shown is a structural schematic of the arc-blocking shield of the present invention;

[0025] Figure 7 The diagram shown is a structural schematic of the relay of the present invention;

[0026] Figure 8 The diagram shows the structure of the relay of the present invention, in which the arc-blocking cover is hidden.

[0027] Label Explanation:

[0028] The components include: stationary contact mechanism 1, base 101, first stationary contact assembly 102, second stationary contact assembly 103, pin 11, stationary contact 12, first stationary contact piece 13, support part 131, lead-out part 132, connecting part 133, and second stationary contact piece 14.

[0029] Moving contact mechanism 2, first moving contact assembly 201, second moving contact assembly 202, moving contact 21, moving spring 22, first support arm 221, second support arm 222, support plate 23;

[0030] Arc-blocking cover 3, partition plate 31, panel 32, side plate 33, snap-fit ​​groove 331, mounting plate 34, notch 340;

[0031] Outer casing 100, electromagnetic system 200, contact system 300. Detailed Implementation

[0032] To further illustrate the various embodiments, the present invention provides accompanying drawings. These drawings are part of the disclosure of the present invention, primarily used to illustrate the embodiments and to explain the operating principles of the embodiments in conjunction with the relevant descriptions in the specification. With reference to these drawings, those skilled in the art should be able to understand other possible implementations and the advantages of the present invention. Components in the drawings are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0033] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0034] Reference Figures 1 to 6 As shown, this embodiment provides a T-shaped contact system, including a stationary contact mechanism 1 and a moving contact mechanism 2 corresponding to the stationary contact mechanism 1. The stationary contact mechanism 1 includes a base 101 and an even number of first stationary contact assemblies 102 and second stationary contact assemblies 103 fixedly disposed on both sides of the base 101. In this embodiment, the base is defined with the pin lead-out side as the bottom and the stationary contact side as the top after installation. The first stationary contact assemblies 102 and second stationary contact assemblies 103 are respectively disposed on the left and right sides of the upper end surface of the base 101. Specifically, the number of first stationary contact assemblies 102 and second stationary contact assemblies 103 can be set to 2, 4, etc. In this embodiment, the number of first stationary contact assemblies 102 and second stationary contact assemblies 103 is 4 to improve the breaking capacity of the contacts and make them more suitable for users with high voltage and high load conditions.

[0035] See Figures 1 to 4As shown, both the first stationary contact assembly 102 and the second stationary contact assembly 103 include a pin 11 and a stationary contact 12, with the pin 11 passing through the base 101. The first stationary contact assembly 102 also includes a first stationary contact piece 13, which includes a support portion 131 and a lead-out portion 132 that are perpendicular to each other. The lead-out portion 132 is laterally disposed at the upper end of the support portion 131, and the stationary contact 12 is located on the lead-out portion 132. Furthermore, the lower end of the support portion 131 is provided with a connecting portion 133, which is perpendicular to the support portion 131 and also perpendicular to the lead-out portion 132. The support portion 131, the lead-out portion 132, and the connecting portion 133 of the first stationary contact piece 13 belong to different planes. The connecting portion 133 and the lead-out portion 132 are not connected, and the space between them allows the moving contact mechanism 2 to extend. The first stationary contact piece 13 is fixedly connected to the pin 11 through the connecting portion 133. Specifically, the first stationary contact 13 is fixedly connected to the pin 11 by soldering the connecting part 133 to the pin 11. In this way, the space occupied by the first stationary contact 13 is minimized, thereby reducing the size of the relay.

[0036] Among them, see Figure 2 and Figure 3 As shown, the first stationary contact assemblies 102 are grouped in pairs, with the lead-out portions 132 of the two first stationary contact assemblies 102 in each group arranged back-to-back, so that the first stationary contact assemblies 102 in each group roughly form a "T" structure. In this embodiment, there are four first stationary contact assemblies 102, so a double "T" structure is formed on one side of the base 101. Since the first stationary contact pieces 13 of the two first stationary contact assemblies 102 in each group are right-angled, the support portions 131 of the first stationary contact pieces 13 are close to each other, and the lead-out portions 132 are back-to-back. In this way, the two support portions 131 of each group that are close to each other are easy to operate from both sides to achieve a fixed connection with the pin; and the distance between the support portions 131 of the two groups of first stationary contact assemblies 102 is large enough, with more assembly space, avoiding interference during assembly, and making operation more convenient; that is, the double "T" structure has a larger process assembly margin, which is convenient for installation and reduces the difficulty of operation.

[0037] In this embodiment, the stationary contacts 12 of the two first stationary contact assemblies 102 in each group are isolated by the support portion 131 of their own first stationary contact pieces 13 to avoid arcing interference. Furthermore, to prevent arcing interference between adjacent groups of first stationary contact assemblies 102 when multiple groups of first stationary contact assemblies 102 are configured, this double-T-shaped contact system also includes an arc-blocking cover 3. The arc-blocking cover 3 is located on the side where the first stationary contact assembly 102 is located and covers the outer periphery of the first stationary contact assembly 102. The arc-blocking cover 3 has a partition plate 31 between each group of first stationary contact assemblies 102, thus isolating adjacent groups of first stationary contact assemblies 102.

[0038] Among them, see Figure 6 As shown, the arc-blocking cover 3 includes a panel 32, side plates 33 on both sides of the panel 32, and a mounting plate 34 on the bottom side. The mounting plate 34 has a notch 340 for accommodating the lead 11. In this embodiment, there is one partition plate 31, located between the side plates 33 on both sides. In this way, the arc-blocking cover 3 is divided into two partition spaces, each partition space is used to accommodate the first stationary contact assembly 102 of each group. At this time, the stationary contacts 12 of the two first stationary contact assemblies 102 located in the partition space are separated by their own support portions 131, so that the two stationary contacts 12 are separated from each other. This further realizes the isolation between the stationary contacts 12 of each first stationary contact assembly 102, effectively solving the technical problem of arc interference between contact groups.

[0039] Specifically, when the arc-blocking cover 3 is installed on the outer periphery of the first stationary contact assembly 102, the two sides of the partition plate of the arc-blocking cover 3 are respectively formed by the side plate 33, the panel 32, the partition plate 31, the mounting plate 34 and the lead-out portion 132 of the first stationary contact piece 13, forming a partition space with one end open. At the same time, the connecting portion 133 of the first stationary contact pieces 13 of the two first stationary contact assemblies 102 is located at the opening of the partition space to further close the partition space; and the supporting portion 131 of the first stationary contact pieces 13 of the two first stationary contact assemblies 102 separates the stationary contacts of the two first stationary contact assemblies 102 to achieve mutual isolation between the stationary contacts 12 of each first stationary contact assembly 102 within the partition space.

[0040] In order to facilitate the installation of the arc-blocking cover, the two side plates 33 of the arc-blocking cover 3 are respectively provided with snap-fit ​​grooves 331 for snap-fitting of the snap-fit ​​blocks.

[0041] In this embodiment, see Figure 4 As shown, the second stationary contact assembly 103 includes a second stationary contact piece 14, which is fixedly connected to the pin 11, and a stationary contact 12 is disposed on the second stationary contact piece 14. Specifically, the second stationary contact piece 14 is a planar body, and the stationary contact 12 is disposed on the upper or lower surface of the second stationary contact piece 14. One end of the second stationary contact piece 14 extends downward to form a mounting portion for soldering to the pin 11, thereby achieving a fixed connection between the second stationary contact assembly 103 and the pin 11. There are also four second stationary contact assemblies 103, and their positions on the base 101 are symmetrical to the positions of the first stationary contact assembly 13 on the base 101.

[0042] For further information, please refer to [link / reference]. Figure 4As shown, the contact working surfaces of the stationary contacts 12 of the first stationary contact assembly 102 and the second stationary contact assembly 103 are oriented in opposite directions, with the contact working surfaces of the stationary contacts 12 of the first stationary contact assembly 102 facing downwards and the contact working surfaces of the stationary contacts 12 of the second stationary contact assembly 103 facing upwards; the moving contacts 21 of the moving contact mechanism 2 correspond to them respectively.

[0043] In this embodiment, the moving contact mechanism 2 includes a first moving contact assembly 201 and a second moving contact assembly 202, respectively corresponding to the first stationary contact assembly 102 and the second stationary contact assembly 103. Both the first moving contact assembly 201 and the second moving contact assembly 202 include a moving spring 22 and a moving contact 21 disposed on the moving spring 22. The working surfaces of the moving contacts 21 of the first moving contact assembly 201 and the second moving contact assembly 202 have opposite orientations. Specifically, the working surface of the moving contact 21 of the first moving contact assembly 201 faces upwards, corresponding to the first stationary contact assembly 102; the working surface of the moving contact 21 of the second moving contact assembly 202 faces downwards, corresponding to the second stationary contact assembly 103.

[0044] In this embodiment, see Figure 5 As shown, the movable spring 22 has a U-shaped structure, including a first arm 221 and a second arm 222 arranged opposite to each other, and the movable contact 21 is located on the first arm 221 and the second arm 222 respectively. Therefore, both the first movable contact assembly 201 and the second movable contact assembly 202 have two movable contacts 21, and correspondingly, the number of both the first movable contact assembly 201 and the second movable contact assembly 202 is two.

[0045] The first moving contact assembly 201 and the second moving contact assembly 202 both include a support plate 23 and an insulating block (not shown in the figure). The first moving contact assembly 201 and the second moving contact assembly 202 are respectively fixed on the insulating block and arranged opposite to each other. Specifically, the moving spring plate 22 of the first moving contact assembly 201 and the second moving contact assembly 202 and the insulating block are respectively provided with mounting holes. The three are fixedly connected by locking the mounting holes on the moving spring plate 22 and the insulating block with a connector. The connector can be a rivet, bolt, or other structure. The insulating block can be made of ceramic, which has the characteristics of good insulation, stable structure and low cost; of course, in other embodiments, the insulating block can also be made of other insulating materials. The support plate 23 is provided on the moving spring plate 22, which plays a role in stabilizing the moving spring plate 22 and also plays a role in preventing vibration bridging. Specifically, the contact working surface of the support plate 23 and the movable contact 21 on the movable spring 22 are on the same side, that is, the support plate 23 of the first movable contact assembly 201 is located above the movable spring 22, and the support plate 23 of the second movable contact assembly 202 is located below the movable spring 22. Further, the support plate 23 also has a U-shaped structure with two arms, which correspond to the first arm 221 and the second arm 222 of the movable spring 22, respectively. Of course, in other embodiments, the structure of the movable contact mechanism 2 is not limited to this, and this document does not impose any restrictions.

[0046] See Figure 7 and Figure 8 As shown, this embodiment also provides a relay, specifically a balanced force type sealed electromagnetic relay. This relay includes an outer casing 100, an electromagnetic system 200, and a contact system 300. The contact system 300 is the aforementioned double-T-shaped contact system. The electromagnetic system 200 and the contact system 300 are disposed within the outer casing 100. The moving contact mechanism 2 of the contact system 300 is connected to the electromagnetic system 200. The electromagnetic system 200 controls the movement of the moving contact mechanism 2 to achieve disconnection or closure with the stationary contact mechanism 1. Of course, in other embodiments, this double-T-shaped contact system can also be used in other types of relays.

[0047] The locking blocks are located on both sides of the inner side of the outer cover 100 to engage with the locking slots 331 on both sides of the arc-isolating cover 3, thereby fixing the arc-isolating cover 3 onto the outer cover 100. Of course, in other embodiments, the positions of the locking blocks and the locking slots can be interchanged, i.e., the locking blocks are located on the arc-isolating cover and the locking slots are located on the outer cover, which can also achieve the connection between the two. This article does not limit the connection structure between the arc-isolating cover 3 and the outer cover 100.

[0048] Although the invention has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that various changes in form and detail may be made to the invention without departing from the spirit and scope of the invention as defined in the appended claims, all of which shall be within the scope of protection of the invention.

Claims

1. A T-shaped contact system, comprising a stationary contact mechanism and a moving contact mechanism corresponding to the stationary contact mechanism; characterized in that: The stationary contact mechanism includes a base and an even number of first stationary contact assemblies and second stationary contact assemblies fixedly disposed on both sides of the base. Each first stationary contact assembly and second stationary contact assembly includes a pin and a stationary contact, with the pin passing through the base. The first stationary contact assembly also includes a first stationary contact piece, which includes a support portion and a lead-out portion perpendicular to each other. The lead-out portion is horizontally disposed at the upper end of the support portion, and the stationary contact is located on the lead-out portion. The first stationary contact assemblies are arranged in pairs, with the support portions of the two first stationary contact assemblies in each pair close to each other and the lead-out portions far apart from each other, so that the two first stationary contact assemblies in each pair roughly form a "T" structure.

2. The T-shaped contact system according to claim 1, characterized in that: The number of the first stationary contact assembly and the second stationary contact assembly is four, and the number of the moving contact mechanism corresponds to this.

3. The T-shaped contact system according to claim 2, characterized in that: It also includes an arc-blocking cover, which is located on the side where the first stationary contact assembly is located and covers the outer periphery of the first stationary contact assembly. The arc-blocking cover has a partition plate between the two sets of first stationary contact assemblies, so that the arc-blocking cover forms a partition space on both sides of the partition plate to accommodate the two sets of first stationary contact assemblies respectively.

4. The T-shaped contact system according to claim 3, characterized in that: The arc-blocking cover includes a panel, side plates on both sides of the panel, and a mounting plate on the bottom side. The mounting plate has a notch for accommodating pins. The partition plate is located between the two side plates. The stationary contacts of the two first stationary contact assemblies located in the partition space are separated by their own support portions so that the two stationary contacts are separated from each other.

5. The T-shaped contact system according to claim 1, characterized in that: The first stationary contact also includes a connecting portion, which is located at the lower end of the support portion and is perpendicular to the support portion. The connecting portion is also perpendicular to the lead-out portion. The first stationary contact is fixedly connected to the pin through the connecting portion.

6. The T-shaped contact system according to claim 1, characterized in that: The working surfaces of the stationary contacts of the first stationary contact assembly and the second stationary contact assembly face opposite directions, with the working surface of the stationary contact of the first stationary contact assembly facing downwards and the working surface of the stationary contact of the second stationary contact assembly facing upwards; the moving contacts of the moving contact mechanism correspond to each of these.

7. The T-shaped contact system according to claim 1, characterized in that: The second stationary contact assembly includes a second stationary contact piece, which is a planar body. The stationary contact is disposed on the upper or lower surface of the second stationary contact piece. One end of the second stationary contact piece extends downward to form a mounting portion that is fixedly connected to the pin.

8. The T-shaped contact system according to claim 1, characterized in that: The moving contact mechanism includes a first moving contact assembly and a second moving contact assembly corresponding to the first stationary contact assembly and the second stationary contact assembly, respectively. Both the first moving contact assembly and the second moving contact assembly include a moving spring and a moving contact disposed on the moving spring. The working surfaces of the moving contacts of the first moving contact assembly and the second moving contact assembly are oriented in opposite directions.

9. The T-shaped contact system according to claim 8, characterized in that: The movable spring has a U-shaped structure, including a first arm and a second arm arranged opposite to each other. The movable contacts are located on the first arm and the second arm respectively. The working surface of the movable contact of the first movable contact assembly faces upward, and the working surface of the movable contact of the second movable contact assembly faces downward.

10. A relay, characterized in that: It includes an outer casing, an electromagnetic system, and a contact system, wherein the contact system is a T-shaped contact system as described in any one of claims 1-9, the electromagnetic system and the contact system are disposed inside the outer casing, and the moving contact mechanism of the contact system is connected to the electromagnetic system.

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