A relay with magnetic attraction fixing member

Abstract

A relay with magnetic attraction fixing device, comprising a housing, a coil assembly, a magnetic steel assembly, and at least one set of switch assembly. The switch assembly comprises a transfer piece, a movable contact assembly, a stationary contact assembly, an arc extinguishing assembly, and a magnetic attraction assembly. The movable contact assembly comprises a movable contact mounting plate and a movable contact. The stationary contact assembly comprises a stationary contact mounting plate and a stationary contact. The movable contact and the stationary contact are connected or separated to control the on-off of the relay switch. The arc extinguishing assembly comprises a guide piece for guiding the electric arc generated when the movable contact and the stationary contact are in contact, and an arc extinguishing grid connected with the guide piece for extinguishing the electric arc. The magnetic attraction assembly comprises a magnetic attraction piece on the movable contact mounting plate, and a metal block corresponding to the magnetic attraction piece. The magnetic attraction assembly is used to strengthen the connection strength when the movable contact and the stationary contact are in contact, so that the connection between the two is more reliable.

Description

Technical Field

[0001] This utility model belongs to the technical field of relay products, and in particular, it is a relay with a magnetic fixing component. Background Technology

[0002] A relay is an electronic device that uses electromagnetic induction to control the switching of circuits. It controls the closing and opening of moving and stationary contacts through electromagnetic components. Relays have wide applications in industrial control, and different types of relays can be used to achieve logic control and sequential control. However, existing relays only connect the moving and stationary contacts through a driving component, resulting in limited connection strength. This can easily lead to the connection point shifting during relay use, affecting subsequent normal operation.

[0003] In the utility model patent with publication number CN217822460U, the connection between the moving contact and the stationary contact is only driven by the driving unit. The connection strength between the two is limited, and the connection point is easily displaced by external force during use, which in turn affects the normal switching of the relay. Summary of the Invention

[0004] In view of this, the present invention provides a relay with a magnetic fixing component to solve the above problems.

[0005] A relay with a magnetic retainer includes a housing, a coil assembly located within the housing, a magnet assembly connected to the coil assembly, and at least one set of switch assemblies driven to close or open by the magnet assembly. Each set of switch assemblies includes a set of adapter plates connected to the magnet assembly, a set of moving contact assemblies connected to the adapter plates, a set of stationary contact assemblies corresponding to the moving contact assemblies, a set of arc-extinguishing assemblies located on the housing and spaced apart from the moving and stationary contact assemblies, and a magnetic retainer assembly located on the moving contact assembly. The moving contact assembly includes a moving contact mounting plate and at least one moving contact located on the moving contact mounting plate. The stationary contact assembly includes a stationary contact mounting plate and at least one stationary contact located on the stationary contact mounting plate. The moving contact is used to connect or disconnect with the stationary contact to control the switching of the switch assembly. The arc-extinguishing assembly includes an arc-guiding device for guiding the electric arc generated when the moving contact and the stationary contact make contact, and an arc-extinguishing grid connected to the guide plate for extinguishing the electric arc. The magnetic attraction assembly includes a magnetic attraction element located on the moving contact mounting plate and a metal block corresponding to the magnetic attraction element for strengthening the connection between the moving contact and the stationary contact.

[0006] Furthermore, the housing includes a housing, two end caps located on both sides of the housing, and at least one receiving cavity for accommodating the switch assembly. The housing includes a support plate located in the middle of the housing, and a plurality of spaced-apart waist-shaped through holes formed on the support plate.

[0007] Furthermore, the housing is also provided with a fixing bracket for fixing the coil assembly, the magnet assembly, and the switch assembly.

[0008] Furthermore, the magnet assembly includes a permanent magnet armature rotatably disposed on one side of the coil assembly, and a pusher plate connected to the permanent magnet armature. The permanent magnet armature also includes a swing plug located on the side of the permanent magnet armature away from the coil assembly.

[0009] Furthermore, the push plate is connected to the switch assembly and includes a push plate body, a slot located on one side of the push plate body, and at least one insertion protrusion located on the other side of the push plate body.

[0010] Furthermore, the insertion protrusion passes through the waist-shaped through hole.

[0011] Furthermore, the adapter plate includes an adapter body, an adapter sleeve located at one end of the adapter body, and an abutment groove located at the other end of the adapter body. The adapter sleeve is used to insert the insertion protrusion, and the size and shape of the adapter sleeve are adapted to the size and shape of the insertion protrusion.

[0012] Furthermore, the abutment groove is used to abut the moving contact assembly.

[0013] Furthermore, the guide plate is made of metal.

[0014] Compared with existing technologies, the relay with magnetic fasteners provided by this utility model has at least one arc-extinguishing component on the side wall of the housing near the moving and stationary contacts. Each arc-extinguishing component includes a guide plate for guiding the arc generated when the stationary and moving contacts come into contact, and an arc-extinguishing grid connected to the guide plate for extinguishing the arc. The arc-extinguishing grid extinguishes the arc, ensuring the safety of other components inside the housing. By setting the magnetic fastener and cooperating with the metal block, the connection force between the moving and stationary contacts is increased when the magnet pushes them into contact, and the connection strength is strengthened after connection, making the connection stable and reliable. Furthermore, the functional components inside the housing are connected and fixed to both sides of the support plate located in the middle of the housing. Through a layered stacking layout, the area of ​​the housing is reduced by trading space for area, thus improving the space utilization of the housing. Attached Figure Description

[0015] Figure 1 An exploded view of a relay with a magnetic fastener provided by this utility model.

[0016] Figure 2 for Figure 1 An exploded view of the relay with a magnetic fastener from another direction.

[0017] Figure 3 for Figure 1 A schematic diagram of the switching assembly of a relay with a magnetic fastener.

[0018] Figure 4 for Figure 3 A magnified view of a relay with a magnetic fastener at point A.

[0019] Figure 5 for Figure 1 An exploded view of the push plate, the adapter plate, and the moving contact assembly of a relay with magnetic fasteners.

[0020] Figure 6 for Figure 1 A schematic diagram of the drive board of a relay with magnetic fasteners.

[0021] Figure 7 for Figure 1 A schematic diagram of the arc-extinguishing component of a relay with a magnetic fixing member. Detailed Implementation

[0022] The specific embodiments of this utility model are described in further detail below. It should be understood that the description of the embodiments of this utility model herein is not intended to limit the scope of protection of this utility model.

[0023] like Figures 1 to 7 The diagram shown is a structural schematic of a relay with a magnetic fixing component provided by this utility model. The relay with the magnetic fixing component includes a housing 10, a coil assembly 20 located within the housing 10, a magnet assembly 30 connected to the coil assembly 20, and at least one set of switch assemblies 40 driven to close or open by the magnet assembly 30. The relay with the magnetic fixing component also includes other functional modules, such as assembly components and electrical connection components, which are technologies known to those skilled in the art and will not be described in detail here.

[0024] like Figure 1 As shown, the housing 10 includes a housing 11 and two end caps 12 located on both sides of the housing 11. The housing 10 is used to carry the coil assembly 20, the magnet assembly 30, and the switch assembly 40.

[0025] The housing 11 includes a support plate 111 located in the middle of the housing 11, and a plurality of waist-shaped through holes 112 spaced apart and formed on the support plate 111.

[0026] The two sides of the support plate 111 are used to support the coil assembly 20, the magnet assembly 30, and the switch assembly 40, which can be fixed in the housing 11 by welding or plugging. The support plate 111 and the two end caps 12 respectively form two closed spaces to accommodate the various functional components. By stacking the functional components, the usable area of ​​the housing 11 is reduced, thereby improving the space utilization rate of the housing 11 by trading space for area.

[0027] The waist-shaped through hole 112 is used to pass through the magnet assembly 30 and to limit the range and trajectory of the movement of the magnet assembly 30.

[0028] The housing 10 also has at least one receiving cavity 13. Each receiving cavity 13 is used to house a set of the switch assemblies 40, that is, the number of switch assemblies 40 is determined by the number of receiving cavities 13, and the number of switch assemblies 40 is equal to the number of receiving cavities 13. In this embodiment, there are three receiving cavities 13, and therefore three sets of the switch assemblies 40.

[0029] It is not difficult to imagine that the housing 10 also contains a fixing bracket 14 for fixing the coil assembly 20, the magnet assembly 30, and the switch assembly 40. The shape and structure of the fixing bracket 14 are designed to fix or clamp the coil assembly 20, the magnet assembly 30, and the switch assembly 40, so its specific structure and shape will not be described in detail here.

[0030] like Figure 2 As shown, the coil assembly 20 is used to drive the magnet assembly 30 to reciprocate to achieve the opening and closing of the switch assembly 40. The coil assembly 20 is existing technology and will not be described in detail here, but for ease of understanding, its principle will be briefly explained below.

[0031] The coil assembly 20 is a basic electronic component, typically formed by winding wires around a ferrite or air core. It can store energy or generate a magnetic field. When energized, it generates a magnetic force, thereby attracting the permanent magnet armature 31 to move. By controlling the direction of the current, the direction of the induced magnetic field is controlled to drive the permanent magnet armature 31 to move in the opposite direction.

[0032] The magnet assembly 30 includes a permanent magnet armature 31 rotatably disposed on one side of the coil assembly 20, and a pusher plate 32 connected to the permanent magnet armature 31.

[0033] The permanent magnet armature 31 is a permanent magnet that oscillates back and forth under the magnetic force generated by the coil assembly 20 to drive the adapter drive 32. The permanent magnet armature 31 also includes an oscillating plug 311 located on the side of the permanent magnet armature 31 away from the coil assembly 20.

[0034] The swing plug 311 is used to cooperate with the slot 322 described below to fix the permanent magnet armature 31 relative to the push plate 32. Its specific working principle will be described below in conjunction with the slot 322.

[0035] like Figure 5 As shown, the pusher plate 32 is used to drive the movement of the moving contact assembly 42 described below. Its specific working principle will be described below together with the moving contact assembly 42.

[0036] like Figure 6 As shown, the push plate 32 is used to drive the switch assembly 40 to move. It includes a push plate body 321, a slot 322 located on one side of the push plate body 321, and at least one insertion protrusion 323 located on the other side of the push plate body 321.

[0037] The slot 322 is used to connect and fix the pusher 32 to the permanent magnet armature 31, and its size and shape are adapted to the size and shape of the swing plug 311. The swing plug 311 and the slot 322 are interference fit. When the swing plug 311 is inserted into the slot 322, the two are relatively fixed, and the pusher 32 can move with the movement of the permanent magnet armature 31.

[0038] The insertion protrusion 323 is used to mate with the adapter sleeve 412 described below to fix the adapter piece 41 onto the push piece 32, and it can be a insertion post. The slot 322 and the insertion protrusion 323 are respectively located on both sides of the push piece body 321. The insertion protrusion 323 passes through the waist-shaped through hole 112 and moves along the waist-shaped through hole 112 under the power drive of the permanent magnet armature 31.

[0039] like Figure 3 As shown, in this embodiment, the relay includes three sets of switch assemblies 40, which have the same structure and working principle. The following description uses only one set of switch assemblies 40 as an example. Each set of switch assemblies 40 includes a set of adapter plates 41 connected to the magnet assembly 30, a set of moving contact assemblies 42 connected to the adapter plates 41, a set of stationary contact assemblies 43 corresponding to the moving contact assemblies 42, a set of arc-extinguishing assemblies 44 located on the inner wall of the housing 10 and spaced apart from the moving contact assemblies 42 and the stationary contact assemblies 43, and a set of magnetic attraction assemblies 45 located on the moving contact assembly 42.

[0040] Each adapter piece 41 is used to drive the moving contact assembly 42 connected to it to move. Each adapter piece 41 is located between the push piece 32 and the moving contact assembly 42. Each adapter piece 41 includes an adapter body 411, an adapter sleeve 412 located at one end of the adapter body 411, and an abutment groove 413 located at the other end of the adapter body 411. The number of adapter pieces 41 is determined by the number of switch assemblies 40. In this embodiment, the number of adapter pieces 41 is three.

[0041] The adapter sleeve 412 is used to insert the insertion protrusion 323, and it can be a cylindrical sleeve. The size and shape of the adapter sleeve 412 are adapted to the size and shape of the insertion protrusion 323, and when the insertion protrusion 323 is inserted into the adapter sleeve 412, the two are relatively fixed.

[0042] The abutment groove 413 is used to abut the moving contact assembly 42 and fix the moving contact assembly 42 on the push plate 32 to facilitate the movement of the moving contact assembly 42.

[0043] like Figure 3 As shown, each of the moving contact assemblies 42 includes a moving contact mounting plate 421 and at least one moving contact 422 located on the moving contact mounting plate 421.

[0044] The moving contact mounting plate 421 is used to support the moving contact 422, and it can be a rectangular plate. It is easy to see that the moving contact mounting plate 421 is also provided with an abutment portion corresponding to the abutment groove 413, so as to facilitate the connection and fixation between the adapter piece 41 and the moving contact mounting plate 421.

[0045] The moving contact 422 is used to connect or disconnect with the stationary contact 432 described below to control the on / off state of the switch assembly 40.

[0046] like Figure 3 As shown, the stationary contact assembly 43 cooperates with the moving contact assembly 42 to control the on / off state of the relay switch. It is connected and fixed to the fixed bracket 14 and is disposed opposite to the moving contact assembly 42. The stationary contact assembly 43 includes a stationary contact mounting plate 431 located on the fixed bracket 14 and at least one stationary contact 432 located on the stationary contact mounting plate 431.

[0047] The stationary contact mounting plate 431 is used to support the stationary contact 432, and it can be a rectangular plate.

[0048] When the stationary contact 432 and the moving contact 422 are connected, the switch assembly 40 is closed; when the stationary contact 432 and the moving contact 422 are separated, the switch assembly 40 is disconnected.

[0049] like Figure 7 As shown, the arc-extinguishing assembly 44 is used to extinguish the electric arc generated between the moving contact 422 and the stationary contact 432 when they are in contact. It is located on the side wall of the housing 11 and near one end of the moving contact 422 and the stationary contact 432. The arc-extinguishing assembly 44 includes a guide plate 441 and an arc-extinguishing grid 442 connected to the guide plate 441. The arc-extinguishing assembly 44 can be fixed to the side wall of the housing 11 by welding.

[0050] The guide plate 441 is used to guide the electric arc generated when the moving contact 422 and the stationary contact 432 come into contact into the arc-extinguishing grid 442. It can be a rectangular strip with one end extending out of the arc-extinguishing grid 442. The guide plate 441 can be made of metal materials such as iron, thus having good conductivity.

[0051] The arc-extinguishing grid 442 is used to extinguish the electric arc generated when the moving contact 422 and the stationary contact 432 come into contact, thereby protecting the internal components of the relay. The arc-extinguishing grid 442 is a metal grid sheet that utilizes the short-arc extinguishing principle. A metal sheet with magnetic material is placed in the electric arc to divide it into several short arcs, and the arc is extinguished by utilizing the near-cathode effect of the AC arc and the near-electrode voltage drop of the DC arc. This should be considered prior art. The arc-extinguishing grid 442 can be made of magnetic materials such as iron.

[0052] The magnetic attraction component 45 is used to enhance the connection strength when the moving contact 422 and the stationary contact 432 are in contact. It includes a magnetic attraction member 451 located on the moving contact mounting plate 421 and a metal block 452 located on the fixed bracket 14 and corresponding to the magnetic attraction member 451. Specifically, when the moving contact 422 approaches the stationary contact 432, the magnetic attraction member 451 located on the moving contact mounting plate 421 moves accordingly and approaches the metal block 452. At this time, a magnetic attraction force is generated between the magnetic attraction member 451 and the metal block 452, which can push the moving contact 422 towards the stationary contact 432, thereby facilitating the connection and contact between the moving contact 422 and the stationary contact 432. Furthermore, after the moving contact 422 and the stationary contact 432 are connected and made into contact, the magnetic attractor 451 constantly attracts the metal block 452, thereby making the connection between the moving contact 422 and the stationary contact 432 more stable.

[0053] Compared with the prior art, the relay with magnetic fastener provided by this utility model has at least one arc-extinguishing component 44 provided on the side wall of the housing 11 near the moving contact 422 and the stationary contact 432. Each arc-extinguishing component 44 includes a guide plate 441 for guiding the arc generated when the stationary contact 432 and the moving contact 422 come into contact, and an arc-extinguishing grid 442 connected to the guide plate 441 for extinguishing the arc. The arc is extinguished by the arc-extinguishing grid 442, ensuring the safety of other components inside the housing 11. By providing the magnetic fastener 451 and cooperating with the metal block 452, the connection force between the moving contact 422 and the stationary contact 432 can be increased when the magnet assembly 30 pushes them into contact, and the connection strength is strengthened after connection, making the connection stable and reliable. Furthermore, the functional components inside the housing 11 are connected and fixed to both sides of the support plate 111, which is located in the middle of the housing 11. By using a layered stacking layout, the area of ​​the housing 11 is reduced by exchanging space for area, thereby improving the space utilization rate of the housing 11.

[0054] The above are merely preferred embodiments of the present utility model and are not intended to limit the scope of protection of the present utility model. Any modifications, equivalent substitutions or improvements within the spirit of the present utility model are covered within the scope of the claims of the present utility model.

Claims

1. A relay with a magnetic fixing component, characterized in that: The relay with magnetic fastening includes a housing, a coil assembly located within the housing, a magnet assembly connected to the coil assembly, and at least one set of switch assemblies driven to close or open by the magnet assembly. Each set of switch assemblies includes a set of adapter plates connected to the magnet assembly, a set of moving contact assemblies connected to the adapter plates, a set of stationary contact assemblies corresponding to the moving contact assemblies, a set of arc-extinguishing assemblies located on the housing and spaced apart from the moving contact assemblies and the stationary contact assemblies, and a magnetic fastening assembly located on the moving contact assembly. The moving contact assembly includes a moving contact mounting plate and at least one... The moving contact is located on the moving contact mounting plate. The stationary contact assembly includes a stationary contact mounting plate and at least one stationary contact located on the stationary contact mounting plate. The moving contact is used to connect or disconnect with the stationary contact to control the switching of the switch assembly. The arc extinguishing assembly includes an arc extinguishing grid connected to the guide plate and used to extinguish the arc when the moving contact and the stationary contact are in contact. The magnetic attraction assembly includes a magnetic attraction member located on the moving contact mounting plate and a metal block corresponding to the magnetic attraction member to enhance the connection strength when the moving contact and the stationary contact are connected.

2. The relay with a magnetic fixing component as described in claim 1, characterized in that: The housing includes a housing, two end caps located on both sides of the housing, and at least one receiving cavity for accommodating the switch assembly. The housing includes a support plate located in the middle of the housing and a plurality of spaced-apart oblong through holes formed on the support plate.

3. The relay with a magnetic fixing component as described in claim 1, characterized in that: The housing also includes a mounting bracket for fixing the coil assembly, the magnet assembly, and the switch assembly.

4. The relay with a magnetic fixing member as described in claim 1, characterized in that: The magnet assembly includes a permanent magnet armature rotatably disposed on one side of the coil assembly, and a pusher plate connected to the permanent magnet armature. The permanent magnet armature also includes a swing plug located on the side of the permanent magnet armature away from the coil assembly.

5. The relay with a magnetic fixing member as described in claim 1, characterized in that: The push plate is connected to the switch assembly and includes a push plate body, a slot located on one side of the push plate body, and at least one insertion protrusion located on the other side of the push plate body.

6. The relay with a magnetic fixing member as described in claim 2, characterized in that: The insertion protrusion passes through the waist-shaped through hole.

7. The relay with a magnetic fixing member as described in claim 5, characterized in that: The adapter plate includes an adapter body, an adapter sleeve located at one end of the adapter body, and an abutment groove located at the other end of the adapter body. The adapter sleeve is used to insert the insertion protrusion, and the size and shape of the adapter sleeve are adapted to the size and shape of the insertion protrusion.

8. The relay with a magnetic fixing member as described in claim 1, characterized in that: The abutment groove is used to abut the moving contact assembly.

9. The relay with a magnetic fixing member as described in claim 1, characterized in that: The guide plate is made of metal.

Images